WO2018128870A2

WO2018128870A2 - Resource allocation, design, and configurable dm (demodulation)-rs (reference signal) for nr (new radio) ul (uplink) control channel

Info

Publication number: WO2018128870A2
Application number: PCT/US2017/068398
Authority: WO
Inventors: Gang Xiong; Joonyoung Cho; Hong He; Hwan-Joon Kwon
Original assignee: Intel IP Corporation
Priority date: 2017-01-09
Filing date: 2017-12-26
Publication date: 2018-07-12
Also published as: WO2018128870A3; DE112017005701T5

Abstract

Techniques discussed herein can facilitate configuration of DM (Demodulation)-RS and a spreading sequence for UCI (Uplink Control Information) for NR (New Radio) PUCCH (Physical Uplink Control Channel). One example embodiment employable at a UE (User Equipment) can comprise processing circuitry configured to: process first signaling that indicates a first sequence index for DM-RS and a second sequence index for a spreading sequence for UCI symbols; and generate a NR PUCCH comprising the DM-RS based on the first sequence index and the UCI symbols based on the second sequence index.

Description

RESOURCE ALLOCATION, DESIGN, AND CONFIGURABLE DM

(DEMODULATION)-RS (REFERENCE SIGNAL) FOR NR (NEW RADIO) UL (UPLINK)

CONTROL CHANNEL

REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Applications No.

62/444,123 filed January 9, 2017, entitled "RESOURCE ALLOCATION AND DETAILED DESIGN FOR NR PUCCH WITH MULTIPLE SLOT DURATION", and No. 62/458,378 filed February 13, 2017, entitled "CONFIGURABLE DEMODULATION REFERENCE SIGNAL (DMRS) FOR NEW RADIO (NR) UPLINK (UL) CONTROL CHANNEL", the contents of which are herein incorporated by reference in their entirety.

FIELD

[0002] The present disclosure relates to wireless technology, and more specifically to techniques employable in connection with a NR (New Radio) UL (Uplink) control channel.

BACKGROUND

[0003] Mobile communication has evolved significantly from early voice systems to today's highly sophisticated integrated communication platform. The next generation wireless communication system, 5G (Fifth Generation), or new radio (NR), will provide access to information and sharing of data anywhere, anytime by various users and applications. NR is expected to be a unified network/system that can meet vastly different and sometimes conflicting performance dimensions and services. These diverse multi-dimensional targets for NR are driven by different services and

applications. In general, NR will evolve based on 3GPP (Third Generation Partnership Project) LTE (Long Term Evolution)-Advanced with additional potential new Radio Access Technologies (RATs) to enrich peoples' lives with better, simpler and seamless wireless connectivity solutions. NR will enable everything connected by wireless and deliver fast, rich contents and services.

BRIEF DESCRIPTION OF THE DRAWINGS

[0004] FIG. 1 is a block diagram illustrating an example user equipment (UE) useable in connection with various aspects described herein. [0005] FIG. 2 is a diagram illustrating example components of a device that can be employed in accordance with various aspects discussed herein.

[0006] FIG. 3 is a diagram illustrating example interfaces of baseband circuitry that can be employed in accordance with various aspects discussed herein.

[0007] FIG. 4 is a block diagram illustrating a system employable at a UE (User

Equipment) that facilitates improvements to a NR (New Radio) PUCCH (Physical Uplink

Control Channel), according to various aspects described herein.

[0008] FIG. 5 is a block diagram illustrating a system employable at a BS (Base

Station) that facilitates improvements to a NR (New Radio) PUCCH (Physical Uplink

Control Channel), according to various aspects described herein.

[0009] FIG. 6 is a pair of diagrams illustrating examples of NR PUCCH with short and long duration within an UL (Uplink) data slot, according to various aspects discussed herein.

[0010] FIG. 7 is a pair of diagrams illustrating examples of UL control channel with short duration allocated in the last OFDM (Orthogonal Frequency Division Multiplexing) symbol within one slot, according to various aspects discussed herein.

[0011] FIG. 8 is a pair of diagrams illustrating examples of FDM (Frequency Division

Multiplexing)-based and TDM (Time Division Multiplexing)-based multiplexing of DM-RS and UCI (Uplink Control Information) symbols, according to various aspects discussed herein.

[0012] FIG. 9 is a diagram illustrating one example of DM-RS and UCI symbol positions within one physical resource block (PRB), according to various aspects discussed herein.

[0013] FIG. 10 is a diagram illustrating CM (Cubic Metric) analysis for short PUCCH with 1 or 2 UCI bits for different root indexes, according to various aspects discussed herein.

[0014] FIG. 11 is a pair of diagrams illustrating CM for short UL control channel with different root indexes, according to various aspects discussed herein.

[0015] FIG. 12 is a diagram illustrating one example of sequences that can be employed for short PUCCH with distributed transmission, according to various aspects discussed herein.

[0016] FIG. 13 is a pair of diagrams illustrating two options of DM-RS patterns employable in scenarios wherein NR PUCCH spans two symbols and DM-RS and UCI symbols are multiplexed at least in part in a FDM-based manner, according to various aspects discussed herein. [0017] FIG. 14 is a pair of diagrams illustrating two options of DM-RS patterns employable in scenarios wherein NR PUCCH spans two symbols and DM-RS and UCI symbols are multiplexed in a TDM-based manner, according to various aspects discussed herein.

[0018] FIG. 15 is a flow diagram of an example method employable at a UE that facilitates configuration of a NR PUCCH to provide one or more of reduced CM or configurable DM-RS density, according to various aspects discussed herein.

[0019] FIG. 16 is a flow diagram of an example method employable at a BS that facilitates configuration of a NR PUCCH to provide one or more of reduced CM or configurable DM-RS density, according to various aspects discussed herein.

DETAILED DESCRIPTION

[0020] The present disclosure will now be described with reference to the attached drawing figures, wherein like reference numerals are used to refer to like elements throughout, and wherein the illustrated structures and devices are not necessarily drawn to scale. As utilized herein, terms "component," "system," "interface," and the like are intended to refer to a computer-related entity, hardware, software (e.g., in execution), and/or firmware. For example, a component can be a processor (e.g., a microprocessor, a controller, or other processing device), a process running on a processor, a controller, an object, an executable, a program, a storage device, a computer, a tablet PC and/or a user equipment (e.g., mobile phone, etc.) with a processing device. By way of illustration, an application running on a server and the server can also be a component. One or more components can reside within a process, and a component can be localized on one computer and/or distributed between two or more computers. A set of elements or a set of other components can be described herein, in which the term "set" can be interpreted as "one or more."

[0021] Further, these components can execute from various computer readable storage media having various data structures stored thereon such as with a module, for example. The components can communicate via local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from one component interacting with another component in a local system, distributed system, and/or across a network, such as, the Internet, a local area network, a wide area network, or similar network with other systems via the signal).

[0022] As another example, a component can be an apparatus with specific functionality provided by mechanical parts operated by electric or electronic circuitry, in which the electric or electronic circuitry can be operated by a software application or a firmware application executed by one or more processors. The one or more processors can be internal or external to the apparatus and can execute at least a part of the software or firmware application. As yet another example, a component can be an apparatus that provides specific functionality through electronic components without mechanical parts; the electronic components can include one or more processors therein to execute software and/or firmware that confer(s), at least in part, the functionality of the electronic components.

[0023] Use of the word exemplary is intended to present concepts in a concrete fashion. As used in this application, the term "or" is intended to mean an inclusive "or" rather than an exclusive "or". That is, unless specified otherwise, or clear from context, "X employs A or B" is intended to mean any of the natural inclusive permutations. That is, if X employs A; X employs B; or X employs both A and B, then "X employs A or B" is satisfied under any of the foregoing instances. In addition, the articles "a" and "an" as used in this application and the appended claims should generally be construed to mean "one or more" unless specified otherwise or clear from context to be directed to a singular form. Furthermore, to the extent that the terms "including", "includes", "having", "has", "with", or variants thereof are used in either the detailed description and the claims, such terms are intended to be inclusive in a manner similar to the term

"comprising." Additionally, in situations wherein one or more numbered items are discussed (e.g., a "first X", a "second X", etc.), in general the one or more numbered items may be distinct or they may be the same, although in some situations the context may indicate that they are distinct or that they are the same.

[0024] As used herein, the term "circuitry" may refer to, be part of, or include an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or group), and/or memory (shared, dedicated, or group) that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable hardware components that provide the described functionality. In some embodiments, the circuitry may be implemented in, or functions associated with the circuitry may be implemented by, one or more software or firmware modules. In some embodiments, circuitry may include logic, at least partially operable in hardware.

[0025] Embodiments described herein may be implemented into a system using any suitably configured hardware and/or software. FIG. 1 illustrates an architecture of a system 1 00 of a network in accordance with some embodiments. The system 100 is shown to include a user equipment (UE) 101 and a UE 102. The UEs 101 and 102 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices connectable to one or more cellular networks), but may also comprise any mobile or non-mobile computing device, such as Personal Data Assistants (PDAs), pagers, laptop computers, desktop computers, wireless handsets, or any computing device including a wireless communications interface.

[0026] In some embodiments, any of the UEs 101 and 102 can comprise an Internet of Things (loT) UE, which can comprise a network access layer designed for low-power loT applications utilizing short-lived UE connections. An loT UE can utilize technologies such as machine-to-machine (M2M) or machine-type communications (MTC) for exchanging data with an MTC server or device via a public land mobile network (PLMN), Proximity-Based Service (ProSe) or device-to-device (D2D) communication, sensor networks, or loT networks. The M2M or MTC exchange of data may be a machine-initiated exchange of data. An loT network describes interconnecting loT UEs, which may include uniquely identifiable embedded computing devices (within the Internet infrastructure), with short-lived connections. The loT UEs may execute background applications (e.g., keep-alive messages, status updates, etc.) to facilitate the connections of the loT network.

[0027] The UEs 101 and 102 may be configured to connect, e.g., communicatively couple, with a radio access network (RAN) 1 10— the RAN 1 10 may be, for example, an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN), a NextGen RAN (NG RAN), or some other type of RAN. The UEs 101 and 102 utilize connections 103 and 104, respectively, each of which comprises a physical communications interface or layer (discussed in further detail below); in this example, the connections 103 and 104 are illustrated as an air interface to enable communicative coupling, and can be consistent with cellular communications protocols, such as a Global System for Mobile Communications (GSM) protocol, a code-division multiple access (CDMA) network protocol, a Push-to-Talk (PTT) protocol, a PTT over Cellular (POC) protocol, a Universal Mobile Telecommunications System (UMTS) protocol, a 3GPP Long Term Evolution (LTE) protocol, a fifth generation (5G) protocol, a New Radio (NR) protocol, and the like.

[0028] In this embodiment, the UEs 101 and 1 02 may further directly exchange communication data via a ProSe interface 105. The ProSe interface 105 may alternatively be referred to as a sidelink interface comprising one or more logical channels, including but not limited to a Physical Sidelink Control Channel (PSCCH), a Physical Sidelink Shared Channel (PSSCH), a Physical Sidelink Discovery Channel (PSDCH), and a Physical Sidelink Broadcast Channel (PSBCH).

[0029] The UE 102 is shown to be configured to access an access point (AP) 106 via connection 107. The connection 107 can comprise a local wireless connection, such as a connection consistent with any IEEE 802.1 1 protocol, wherein the AP 106 would comprise a wireless fidelity (WiFi®) router. In this example, the AP 1 06 is shown to be connected to the Internet without connecting to the core network of the wireless system (described in further detail below).

[0030] The RAN 1 1 0 can include one or more access nodes that enable the connections 1 03 and 104. These access nodes (ANs) can be referred to as base stations (BSs), NodeBs, evolved NodeBs (eNBs), next Generation NodeBs (gNB), RAN nodes, and so forth, and can comprise ground stations (e.g., terrestrial access points) or satellite stations providing coverage within a geographic area (e.g., a cell). The RAN 1 1 0 may include one or more RAN nodes for providing macrocells, e.g., macro RAN node 1 1 1 , and one or more RAN nodes for providing femtocells or picocells (e.g., cells having smaller coverage areas, smaller user capacity, or higher bandwidth compared to macrocells), e.g., low power (LP) RAN node 1 12.

[0031] Any of the RAN nodes 1 1 1 and 1 12 can terminate the air interface protocol and can be the first point of contact for the UEs 101 and 102. In some embodiments, any of the RAN nodes 1 1 1 and 1 12 can fulfill various logical functions for the RAN 1 1 0 including, but not limited to, radio network controller (RNC) functions such as radio bearer management, uplink and downlink dynamic radio resource management and data packet scheduling, and mobility management.

[0032] In accordance with some embodiments, the UEs 101 and 102 can be configured to communicate using Orthogonal Frequency-Division Multiplexing (OFDM) communication signals with each other or with any of the RAN nodes 1 1 1 and 1 1 2 over a multicarrier communication channel in accordance various communication techniques, such as, but not limited to, an Orthogonal Frequency-Division Multiple Access (OFDMA) communication technique (e.g., for downlink communications) or a Single Carrier Frequency Division Multiple Access (SC-FDMA) communication technique (e.g., for uplink and ProSe or sidelink communications), although the scope of the embodiments is not limited in this respect. The OFDM signals can comprise a plurality of orthogonal subcarriers.

[0033] In some embodiments, a downlink resource grid can be used for downlink transmissions from any of the RAN nodes 1 1 1 and 1 12 to the UEs 101 and 1 02, while uplink transmissions can utilize similar techniques. The grid can be a time-frequency grid, called a resource grid or time-frequency resource grid, which is the physical resource in the downlink in each slot. Such a time-frequency plane representation is a common practice for OFDM systems, which makes it intuitive for radio resource allocation. Each column and each row of the resource grid corresponds to one OFDM symbol and one OFDM subcarrier, respectively. The duration of the resource grid in the time domain corresponds to one slot in a radio frame. The smallest time-frequency unit in a resource grid is denoted as a resource element. Each resource grid comprises a number of resource blocks, which describe the mapping of certain physical channels to resource elements. Each resource block comprises a collection of resource elements; in the frequency domain, this may represent the smallest quantity of resources that currently can be allocated. There are several different physical downlink channels that are conveyed using such resource blocks.

[0034] The physical downlink shared channel (PDSCH) may carry user data and higher-layer signaling to the UEs 101 and 102. The physical downlink control channel (PDCCH) may carry information about the transport format and resource allocations related to the PDSCH channel, among other things. It may also inform the UEs 101 and 102 about the transport format, resource allocation, and H-ARQ (Hybrid Automatic Repeat Request) information related to the uplink shared channel. Typically, downlink scheduling (assigning control and shared channel resource blocks to the UE 102 within a cell) may be performed at any of the RAN nodes 1 1 1 and 1 12 based on channel quality information fed back from any of the UEs 101 and 102. The downlink resource assignment information may be sent on the PDCCH used for (e.g., assigned to) each of the UEs 101 and 1 02.

[0035] The PDCCH may use control channel elements (CCEs) to convey the control information. Before being mapped to resource elements, the PDCCH complex-valued symbols may first be organized into quadruplets, which may then be permuted using a sub-block interleaver for rate matching. Each PDCCH may be transmitted using one or more of these CCEs, where each CCE may correspond to nine sets of four physical resource elements known as resource element groups (REGs). Four Quadrature Phase Shift Keying (QPSK) symbols may be mapped to each REG. The PDCCH can be transmitted using one or more CCEs, depending on the size of the downlink control information (DCI) and the channel condition. There can be four or more different PDCCH formats defined in LTE with different numbers of CCEs (e.g., aggregation level, L=1 , 2, 4, or 8). [0036] Some embodiments may use concepts for resource allocation for control channel information that are an extension of the above-described concepts. For example, some embodiments may utilize an enhanced physical downlink control channel (EPDCCH) that uses PDSCH resources for control information transmission. The EPDCCH may be transmitted using one or more enhanced the control channel elements (ECCEs). Similar to above, each ECCE may correspond to nine sets of four physical resource elements known as an enhanced resource element groups (EREGs). An ECCE may have other numbers of EREGs in some situations.

[0037] The RAN 1 1 0 is shown to be communicatively coupled to a core network (CN) 1 20— via an S1 interface 1 1 3. In embodiments, the CN 120 may be an evolved packet core (EPC) network, a NextGen Packet Core (NPC) network, or some other type of CN. In this embodiment the S1 interface 1 13 is split into two parts: the S1 -U interface 1 14, which carries traffic data between the RAN nodes 1 1 1 and 1 12 and the serving gateway (S-GW) 122, and the S1 -mobility management entity (MME) interface 1 15, which is a signaling interface between the RAN nodes 1 1 1 and 1 12 and MMEs 121 .

[0038] In this embodiment, the CN 1 20 comprises the MMEs 1 21 , the S-GW 122, the Packet Data Network (PDN) Gateway (P-GW) 123, and a home subscriber server (HSS) 124. The MMEs 121 may be similar in function to the control plane of legacy Serving General Packet Radio Service (GPRS) Support Nodes (SGSN). The MMEs 121 may manage mobility aspects in access such as gateway selection and tracking area list management. The HSS 124 may comprise a database for network users, including subscription-related information to support the network entities' handling of

communication sessions. The CN 120 may comprise one or several HSSs 124, depending on the number of mobile subscribers, on the capacity of the equipment, on the organization of the network, etc. For example, the HSS 124 can provide support for routing/roaming, authentication, authorization, naming/addressing resolution, location dependencies, etc.

[0039] The S-GW 122 may terminate the S1 interface 1 13 towards the RAN 1 10, and routes data packets between the RAN 1 10 and the CN 120. In addition, the S-GW 122 may be a local mobility anchor point for inter-RAN node handovers and also may provide an anchor for inter-3GPP mobility. Other responsibilities may include lawful intercept, charging, and some policy enforcement.

[0040] The P-GW 123 may terminate an SGi interface toward a PDN. The P-GW 123 may route data packets between the EPC network 123 and external networks such as a network including the application server 130 (alternatively referred to as application function (AF)) via an Internet Protocol (IP) interface 125. Generally, the application server 130 may be an element offering applications that use IP bearer resources with the core network (e.g., UMTS Packet Services (PS) domain, LTE PS data services, etc.). In this embodiment, the P-GW 123 is shown to be communicatively coupled to an application server 130 via an IP communications interface 125. The application server 130 can also be configured to support one or more communication services (e.g., Voice-over-Internet Protocol (VoIP) sessions, PTT sessions, group communication sessions, social networking services, etc.) for the UEs 101 and 102 via the CN 120.

[0041] The P-GW 123 may further be a node for policy enforcement and charging data collection. Policy and Charging Enforcement Function (PCRF) 126 is the policy and charging control element of the CN 120. In a non-roaming scenario, there may be a single PCRF in the Home Public Land Mobile Network (HPLMN) associated with a UE's Internet Protocol Connectivity Access Network (IP-CAN) session. In a roaming scenario with local breakout of traffic, there may be two PCRFs associated with a UE's IP-CAN session: a Home PCRF (H-PCRF) within a HPLMN and a Visited PCRF (V-PCRF) within a Visited Public Land Mobile Network (VPLMN). The PCRF 126 may be communicatively coupled to the application server 130 via the P-GW 123. The application server 130 may signal the PCRF 126 to indicate a new service flow and select the appropriate Quality of Service (QoS) and charging parameters. The PCRF 126 may provision this rule into a Policy and Charging Enforcement Function (PCEF) (not shown) with the appropriate traffic flow template (TFT) and QoS class of identifier (QCI), which commences the QoS and charging as specified by the application server 130.

[0042] FIG. 2 illustrates example components of a device 200 in accordance with some embodiments. In some embodiments, the device 200 may include application circuitry 202, baseband circuitry 204, Radio Frequency (RF) circuitry 206, front-end module (FEM) circuitry 208, one or more antennas 21 0, and power management circuitry (PMC) 21 2 coupled together at least as shown. The components of the illustrated device 200 may be included in a UE or a RAN node. In some embodiments, the device 200 may include less elements (e.g., a RAN node may not utilize application circuitry 202, and instead include a processor/controller to process IP data received from an EPC). In some embodiments, the device 200 may include additional elements such as, for example, memory/storage, display, camera, sensor, or input/output (I/O) interface. In other embodiments, the components described below may be included in more than one device (e.g., said circuitries may be separately included in more than one device for Cloud-RAN (C-RAN) implementations).

[0043] The application circuitry 202 may include one or more application processors. For example, the application circuitry 202 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The processor(s) may include any combination of general-purpose processors and dedicated processors (e.g., graphics processors, application processors, etc.). The processors may be coupled with or may include memory/storage and may be configured to execute instructions stored in the memory/storage to enable various applications or operating systems to run on the device 200. In some embodiments, processors of application circuitry 202 may process IP data packets received from an EPC.

[0044] The baseband circuitry 204 may include circuitry such as, but not limited to, one or more single-core or multi-core processors. The baseband circuitry 204 may include one or more baseband processors or control logic to process baseband signals received from a receive signal path of the RF circuitry 206 and to generate baseband signals for a transmit signal path of the RF circuitry 206. Baseband processing circuity 204 may interface with the application circuitry 202 for generation and processing of the baseband signals and for controlling operations of the RF circuitry 206. For example, in some embodiments, the baseband circuitry 204 may include a third generation (3G) baseband processor 204A, a fourth generation (4G) baseband processor 204B, a fifth generation (5G) baseband processor 204C, or other baseband processor(s) 204D for other existing generations, generations in development or to be developed in the future (e.g., second generation (2G), sixth generation (6G), etc.). The baseband circuitry 204 (e.g., one or more of baseband processors 204A-D) may handle various radio control functions that enable communication with one or more radio networks via the RF circuitry 206. In other embodiments, some or all of the functionality of baseband processors 204A-D may be included in modules stored in the memory 204G and executed via a Central Processing Unit (CPU) 204E. The radio control functions may include, but are not limited to, signal modulation/demodulation, encoding/decoding, radio frequency shifting, etc. In some embodiments, modulation/demodulation circuitry of the baseband circuitry 204 may include Fast-Fourier Transform (FFT), precoding, or constellation mapping/demapping functionality. In some embodiments,

encoding/decoding circuitry of the baseband circuitry 204 may include convolution, tail- biting convolution, turbo, Viterbi, or Low Density Parity Check (LDPC) encoder/decoder functionality. Embodiments of modulation/demodulation and encoder/decoder functionality are not limited to these examples and may include other suitable functionality in other embodiments.

[0045] In some embodiments, the baseband circuitry 204 may include one or more audio digital signal processor(s) (DSP) 204F. The audio DSP(s) 204F may be include elements for compression/decompression and echo cancellation and may include other suitable processing elements in other embodiments. Components of the baseband circuitry may be suitably combined in a single chip, a single chipset, or disposed on a same circuit board in some embodiments. In some embodiments, some or all of the constituent components of the baseband circuitry 204 and the application circuitry 202 may be implemented together such as, for example, on a system on a chip (SOC).

[0046] In some embodiments, the baseband circuitry 204 may provide for communication compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry 204 may support communication with an evolved universal terrestrial radio access network (EUTRAN) or other wireless metropolitan area networks (WMAN), a wireless local area network (WLAN), a wireless personal area network (WPAN). Embodiments in which the baseband circuitry 204 is configured to support radio communications of more than one wireless protocol may be referred to as multi-mode baseband circuitry.

[0047] RF circuitry 206 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium. In various embodiments, the RF circuitry 206 may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network. RF circuitry 206 may include a receive signal path which may include circuitry to down-convert RF signals received from the FEM circuitry 208 and provide baseband signals to the baseband circuitry 204. RF circuitry 206 may also include a transmit signal path which may include circuitry to up-convert baseband signals provided by the baseband circuitry 204 and provide RF output signals to the FEM circuitry 208 for transmission.

[0048] In some embodiments, the receive signal path of the RF circuitry 206 may include mixer circuitry 206a, amplifier circuitry 206b and filter circuitry 206c. In some embodiments, the transmit signal path of the RF circuitry 206 may include filter circuitry 206c and mixer circuitry 206a. RF circuitry 206 may also include synthesizer circuitry 206d for synthesizing a frequency for use by the mixer circuitry 206a of the receive signal path and the transmit signal path. In some embodiments, the mixer circuitry 206a of the receive signal path may be configured to down-convert RF signals received from the FEM circuitry 208 based on the synthesized frequency provided by synthesizer circuitry 206d. The amplifier circuitry 206b may be configured to amplify the down- converted signals and the filter circuitry 206c may be a low-pass filter (LPF) or bandpass filter (BPF) configured to remove unwanted signals from the down-converted signals to generate output baseband signals. Output baseband signals may be provided to the baseband circuitry 204 for further processing. In some embodiments, the output baseband signals may be zero-frequency baseband signals, although this is not a requirement. In some embodiments, mixer circuitry 206a of the receive signal path may comprise passive mixers, although the scope of the embodiments is not limited in this respect.

[0049] In some embodiments, the mixer circuitry 206a of the transmit signal path may be configured to up-convert input baseband signals based on the synthesized frequency provided by the synthesizer circuitry 206d to generate RF output signals for the FEM circuitry 208. The baseband signals may be provided by the baseband circuitry 204 and may be filtered by filter circuitry 206c.

[0050] In some embodiments, the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a of the transmit signal path may include two or more mixers and may be arranged for quadrature downconversion and upconversion, respectively. In some embodiments, the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a of the transmit signal path may include two or more mixers and may be arranged for image rejection (e.g., Hartley image rejection). In some embodiments, the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a may be arranged for direct downconversion and direct upconversion, respectively. In some embodiments, the mixer circuitry 206a of the receive signal path and the mixer circuitry 206a of the transmit signal path may be configured for super-heterodyne operation.

[0051] In some embodiments, the output baseband signals and the input baseband signals may be analog baseband signals, although the scope of the embodiments is not limited in this respect. In some alternate embodiments, the output baseband signals and the input baseband signals may be digital baseband signals. In these alternate embodiments, the RF circuitry 206 may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry and the baseband circuitry 204 may include a digital baseband interface to communicate with the RF circuitry 206.

[0052] In some dual-mode embodiments, a separate radio IC circuitry may be provided for processing signals for each spectrum, although the scope of the

embodiments is not limited in this respect. [0053] In some embodiments, the synthesizer circuitry 206d may be a fractional-N synthesizer or a fractional N/N+1 synthesizer, although the scope of the embodiments is not limited in this respect as other types of frequency synthesizers may be suitable. For example, synthesizer circuitry 206d may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.

[0054] The synthesizer circuitry 206d may be configured to synthesize an output frequency for use by the mixer circuitry 206a of the RF circuitry 206 based on a frequency input and a divider control input. In some embodiments, the synthesizer circuitry 206d may be a fractional N/N+1 synthesizer.

[0055] In some embodiments, frequency input may be provided by a voltage controlled oscillator (VCO), although that is not a requirement. Divider control input may be provided by either the baseband circuitry 204 or the applications processor 202 depending on the desired output frequency. In some embodiments, a divider control input (e.g., N) may be determined from a look-up table based on a channel indicated by the applications processor 202.

[0056] Synthesizer circuitry 206d of the RF circuitry 206 may include a divider, a delay-locked loop (DLL), a multiplexer and a phase accumulator. In some embodiments, the divider may be a dual modulus divider (DMD) and the phase accumulator may be a digital phase accumulator (DPA). In some embodiments, the DMD may be configured to divide the input signal by either N or N+1 (e.g., based on a carry out) to provide a fractional division ratio. In some example embodiments, the DLL may include a set of cascaded, tunable, delay elements, a phase detector, a charge pump and a D-type flip- flop. In these embodiments, the delay elements may be configured to break a VCO period up into Nd equal packets of phase, where Nd is the number of delay elements in the delay line. In this way, the DLL provides negative feedback to help ensure that the total delay through the delay line is one VCO cycle.

[0057] In some embodiments, synthesizer circuitry 206d may be configured to generate a carrier frequency as the output frequency, while in other embodiments, the output frequency may be a multiple of the carrier frequency (e.g., twice the carrier frequency, four times the carrier frequency) and used in conjunction with quadrature generator and divider circuitry to generate multiple signals at the carrier frequency with multiple different phases with respect to each other. In some embodiments, the output frequency may be a LO frequency (fLO). In some embodiments, the RF circuitry 206 may include an IQ/polar converter. [0058] FEM circuitry 208 may include a receive signal path which may include circuitry configured to operate on RF signals received from one or more antennas 210, amplify the received signals and provide the amplified versions of the received signals to the RF circuitry 206 for further processing. FEM circuitry 208 may also include a transmit signal path which may include circuitry configured to amplify signals for transmission provided by the RF circuitry 206 for transmission by one or more of the one or more antennas 21 0. In various embodiments, the amplification through the transmit or receive signal paths may be done solely in the RF circuitry 206, solely in the FEM 208, or in both the RF circuitry 206 and the FEM 208.

[0059] In some embodiments, the FEM circuitry 208 may include a TX/RX switch to switch between transmit mode and receive mode operation. The FEM circuitry may include a receive signal path and a transmit signal path. The receive signal path of the FEM circuitry may include an LNA to amplify received RF signals and provide the amplified received RF signals as an output (e.g., to the RF circuitry 206). The transmit signal path of the FEM circuitry 208 may include a power amplifier (PA) to amplify input RF signals (e.g., provided by RF circuitry 206), and one or more filters to generate RF signals for subsequent transmission (e.g., by one or more of the one or more antennas 21 0).

[0060] In some embodiments, the PMC 212 may manage power provided to the baseband circuitry 204. In particular, the PMC 21 2 may control power-source selection, voltage scaling, battery charging, or DC-to-DC conversion. The PMC 212 may often be included when the device 200 is capable of being powered by a battery, for example, when the device is included in a UE. The PMC 21 2 may increase the power conversion efficiency while providing desirable implementation size and heat dissipation

characteristics.

[0061] While FIG. 2 shows the PMC 212 coupled only with the baseband circuitry 204. However, in other embodiments, the PMC 2 12 may be additionally or alternatively coupled with, and perform similar power management operations for, other components such as, but not limited to, application circuitry 202, RF circuitry 206, or FEM 208.

[0062] In some embodiments, the PMC 212 may control, or otherwise be part of, various power saving mechanisms of the device 200. For example, if the device 200 is in an RRC_Connected state, where it is still connected to the RAN node as it expects to receive traffic shortly, then it may enter a state known as Discontinuous Reception Mode (DRX) after a period of inactivity. During this state, the device 200 may power down for brief intervals of time and thus save power. [0063] If there is no data traffic activity for an extended period of time, then the device 200 may transition off to an RRCJdle state, where it disconnects from the network and does not perform operations such as channel quality feedback, handover, etc. The device 200 goes into a very low power state and it performs paging where again it periodically wakes up to listen to the network and then powers down again. The device 200 may not receive data in this state, in order to receive data, it must transition back to RRC_Connected state.

[0064] An additional power saving mode may allow a device to be unavailable to the network for periods longer than a paging interval (ranging from seconds to a few hours). During this time, the device is totally unreachable to the network and may power down completely. Any data sent during this time incurs a large delay and it is assumed the delay is acceptable.

[0065] Processors of the application circuitry 202 and processors of the baseband circuitry 204 may be used to execute elements of one or more instances of a protocol stack. For example, processors of the baseband circuitry 204, alone or in combination, may be used execute Layer 3, Layer 2, or Layer 1 functionality, while processors of the application circuitry 204 may utilize data (e.g., packet data) received from these layers and further execute Layer 4 functionality (e.g., transmission communication protocol (TCP) and user datagram protocol (UDP) layers). As referred to herein, Layer 3 may comprise a radio resource control (RRC) layer, described in further detail below. As referred to herein, Layer 2 may comprise a medium access control (MAC) layer, a radio link control (RLC) layer, and a packet data convergence protocol (PDCP) layer, described in further detail below. As referred to herein, Layer 1 may comprise a physical (PHY) layer of a UE/RAN node, described in further detail below.

[0066] FIG. 3 illustrates example interfaces of baseband circuitry in accordance with some embodiments. As discussed above, the baseband circuitry 204 of FIG. 2 may comprise processors 204A-204E and a memory 204G utilized by said processors. Each of the processors 204A-204E may include a memory interface, 304A-304E,

respectively, to send/receive data to/from the memory 204G.

[0067] The baseband circuitry 204 may further include one or more interfaces to communicatively couple to other circuitries/devices, such as a memory interface 312 (e.g., an interface to send/receive data to/from memory external to the baseband circuitry 204), an application circuitry interface 314 (e.g., an interface to send/receive data to/from the application circuitry 202 of FIG. 2), an RF circuitry interface 316 (e.g., an interface to send/receive data to/from RF circuitry 206 of FIG. 2), a wireless hardware connectivity interface 31 8 (e.g., an interface to send/receive data to/from Near Field Communication (NFC) components, Bluetooth® components (e.g., Bluetooth® Low Energy), Wi-Fi® components, and other communication components), and a power management interface 320 (e.g., an interface to send/receive power or control signals to/from the PMC 212).

[0068] Referring to FIG. 4, illustrated is a block diagram of a system 400 employable at a UE (User Equipment) that facilitates improvements to a NR (New Radio) PUCCH (Physical Uplink Control Channel), according to various aspects described herein.

System 400 can include one or more processors 410 (e.g., one or more baseband processors such as one or more of the baseband processors discussed in connection with FIG. 2 and/or FIG. 3) comprising processing circuitry and associated interface(s) (e.g., one or more interface(s) discussed in connection with FIG. 3), transceiver circuitry 420 (e.g., comprising part or all of RF circuitry 206, which can comprise transmitter circuitry (e.g., associated with one or more transmit chains) and/or receiver circuitry (e.g., associated with one or more receive chains) that can employ common circuit elements, distinct circuit elements, or a combination thereof), and a memory 430 (which can comprise any of a variety of storage mediums and can store instructions and/or data associated with one or more of processor(s) 410 or transceiver circuitry 420). In various aspects, system 400 can be included within a user equipment (UE). As described in greater detail below, system 400 can facilitate configuration of PUCCH to provide CM (Cubic Metric) reduction and configurable DM (Demodulation)-RS

(Reference Signal) density.

[0069] In various aspects discussed herein, signals and/or messages can be generated and output for transmission, and/or transmitted messages can be received and processed. Depending on the type of signal or message generated, outputting for transmission (e.g., by processor(s) 410, processor(s) 510, etc.) can comprise one or more of the following: generating a set of associated bits that indicate the content of the signal or message, coding (e.g., which can include adding a cyclic redundancy check (CRC) and/or coding via one or more of turbo code, low density parity-check (LDPC) code, tailbiting convolution code (TBCC), etc.), scrambling (e.g., based on a scrambling seed), modulating (e.g., via one of binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), or some form of quadrature amplitude modulation (QAM), etc.), and/or resource mapping (e.g., to a scheduled set of resources, to a set of time and frequency resources granted for uplink transmission, etc.). Depending on the type of received signal or message, processing (e.g., by processor(s) 410, processor(s) 51 0, etc.) can comprise one or more of: identifying physical resources associated with the signal/message, detecting the signal/message, resource element group deinterleaving, demodulation, descrambling, and/or decoding.

[0070] Referring to FIG. 5, illustrated is a block diagram of a system 500 employable at a BS (Base Station) that facilitates improvements to a NR (New Radio) PUCCH (Physical Uplink Control Channel), according to various aspects described herein. System 500 can include one or more processors 510 (e.g., one or more baseband processors such as one or more of the baseband processors discussed in connection with FIG. 2 and/or FIG. 3) comprising processing circuitry and associated interface(s) (e.g., one or more interface(s) discussed in connection with FIG. 3), communication circuitry 520 (e.g., which can comprise circuitry for one or more wired (e.g., X2, etc.) connections and/or part or all of RF circuitry 206, which can comprise one or more of transmitter circuitry (e.g., associated with one or more transmit chains) or receiver circuitry (e.g., associated with one or more receive chains), wherein the transmitter circuitry and receiver circuitry can employ common circuit elements, distinct circuit elements, or a combination thereof), and memory 530 (which can comprise any of a variety of storage mediums and can store instructions and/or data associated with one or more of processor(s) 510 or communication circuitry 520). In various aspects, system 500 can be included within an Evolved Universal Terrestrial Radio Access Network (E- UTRAN) Node B (Evolved Node B, eNodeB, or eNB), next generation Node B (gNodeB or gNB) or other base station or TRP (Transmit/Receive Point) in a wireless

communications network. In some aspects, the processor(s) 510, communication circuitry 520, and the memory 530 can be included in a single device, while in other aspects, they can be included in different devices, such as part of a distributed architecture. As described in greater detail below, system 500 can facilitate

configuration of PUCCH to provide CM (Cubic Metric) reduction and configurable DM (Demodulation)-RS (Reference Signal) density.

[0071] At the RAN1 (RAN (Radio Access Network) WG1 (Working Group 1 )) #86bis meeting, the following agreements were made regarding NR (New Radio) UL (Uplink) control channel:

• At least two ways of transmissions are supported for NR UL control channel o UL control channel can be transmitted in short duration

■ around the last transmitted UL symbol(s) of a slot

• FFS [For Further Study]: How to define and treat the

potential gap at the end of the slot ^■ FFS: in the other positions, e.g., the first UL symbol(s) of a slot

^■ TDMed [Time Division Multiplexed] and/or FDMed [Frequency

Division Multiplexed] with UL data channel within a slot

o UL control channel can be transmitted in long duration

^■ over multiple UL symbols to improve coverage

^■ FDMed with UL data channel within a slot

o FFS how to multiplex with SRS [Sounding Reference Signal]

o The frequency resource and hopping, if hopping is used, may not spread over the carrier bandwidth

[0072] Referring to FIG. 6, illustrated is a pair of diagrams showing examples of NR PUCCH (Physical Uplink Control Channel) with short and long duration (e.g., generated by processor(s) 41 0, transmitted by transceiver circuitry 420, received by

communication circuitry 520, and processed by processor(s) 51 0) within an UL (Uplink) data slot, according to various aspects discussed herein. Referring to FIG. 7, illustrated is a pair of diagrams showing that UL control channel with short duration can be allocated in the last OFDM (Orthogonal Frequency Division Multiplexing) symbol (e.g., wherein references herein to OFDM symbols are intended to refer additionally or alternatively to OFDM-based symbols) within one slot, according to various aspects discussed herein. In the DL data slot of FIG. 7, the UL control channel (e.g., generated by processor(s) 41 0) can be located after the GP while in the UL data slots of FIGS. 6 and 7, the UL control channel (e.g., generated by processor(s) 410) can be located after the UL data portion (e.g., generated by processor(s) 410). In FIG. 6 and 7, in order to accommodate the DL to UL and UL to DL switching time and round-trip propagation delay, a guard period (GP) can be inserted between the NR (New Radio) PDSCH (physical downlink shared channel) (e.g., generated by processor(s) 510) and the NR PUCCH (physical uplink control channel) (e.g., generated by processor(s) 410) as well as between the NR PDCCH (physical downlink control channel) (e.g., generated by processor(s) 510) and NR PUSCH (physical uplink shared channel).

[0073] In various aspects, for short PUCCH with 1 symbol duration carrying 1 or 2 bit UCI (Uplink Control Information) payload (e.g., generated by processor(s) 410), multiple transmission schemes can be employed (e.g., by processor(s) 410 and transceiver circuitry 420): (a) a sequence based design, wherein different sequences or resources can be used to carry the 1 or 2 bit UCI payload (e.g., different frequency resources or cyclic shift values can be assigned for ACK or NACK transmission, etc.); (b) FDM (Frequency Division Multiplexing)-based multiplexing of DM (Demodulation)-RS

(Reference Signal) and UCI symbols; or (c) TDM (Time Division Multiplexing)-based multiplexing of DM-RS and UCI symbols (in some such aspects, to reduce overhead, a larger subcarrier spacing can be employed (e.g., by processor(s) 410 and transceiver circuitry 420) for DM-RS and UCI symbols. Referring to FIG. 8, illustrated is a pair of diagrams showing examples of FDM-based and TDM-based multiplexing of DM-RS and UCI symbols, according to various aspects discussed herein.

[0074] For FDM-based multiplexing (e.g., by processor(s) 410 and transceiver circuitry 420) of DM-RS and UCI symbols for short PUCCH carrying 1 or 2 bit UCI payload (e.g., generated by processor(s) 410), orthogonal sequences can be applied (e.g., by processor(s) 410) for both DM-RS and spreading code of UCI symbols to allow multiple UEs to multiplex within the same time and frequency resources. With FDM of DM-RS and UCI symbols within one OFDM symbol (e.g., by processor(s) 410 and transceiver circuitry 420), Peak to Average Power Ratio (PAPR) or Cubic Metric (CM) can be increased compared to a single carrier based modulation scheme. However, this can result in increased backoff for output power and reduced efficiency for power amplifier for uplink transmission.

[0075] Accordingly, in a first set of aspects discussed herein, techniques are discussed which can be employed for cubic metric reduction for short PUCCH carrying 1 or 2 bit UCI information (e.g., generated by processor(s) 410).

[0076] Additionally, NR can support a short UL control channel with a 2 symbol duration (e.g., generated by processor(s) 41 0) within a slot, which can help improve the link budget for short UL control channel. For some UEs, a low quality oscillator can be employed. After initial access, a relatively large residual frequency offset can be expected. In such scenarios, DM-RS can be inserted (e.g., by processor(s) 410 and transceiver circuitry 420) in both symbols for a repeated structure, which can help to improve channel estimation performance (e.g., via processor(s) 510) and robustness of the short UL control channel (e.g., generated by processor(s) 410), especially in the presence of residual time and frequency offset. In such scenarios, a residual frequency offset can be estimated and compensated using a simple phase differentiation algorithm at the BS (e.g., gNB) receiver (e.g., via processor(s) 510 and communication circuitry 520).

[0077] However, residual frequency offsets for other UEs may be relatively small. In such scenarios, a repeated DM-RS structure can be unnecessary. In these scenarios, DM-RS overhead can be reduced so that more resources can be allocated for uplink control information (UCI) symbols. Thus, in various aspects discussed herein, it can be advantageous to configure (e.g., via higher layer signaling generated by processor(s) 51 0, transmitted by communication circuitry 520, received by transceiver circuitry 420, and processed by processor(s) 410) the DM-RS density for the transmission of a UL control channel spanning more than one symbol.

[0078] Accordingly, in a second set of aspects discussed herein, techniques are discussed which can be employed to configured the DM-RS density for the transmission of a UL control channel spanning more than one symbol.

[0079] Various embodiments can employ aspects of the first set of aspects, the second set of aspects, or both the first set of aspects and the second set of aspects.

CM (Cubic Metric) Reduction

[0080] In connection with the first set of aspects, as discussed above, DM-RS can be inserted and embedded in the UL control channel (e.g., by processor(s) 410 and transceiver circuitry 420) to allow a BS (e.g., gNB) to perform coherent detection (e.g., via processor(s) 510 based on signaling received via communication circuitry 520). Additionally, orthogonal sequences can be employed for DM-RS and spreading code (e.g., by processor(s) 410 and transceiver circuitry 420) on modulated symbols to multiplex multiple UEs in the same frequency resources. For short PUCCH carrying a 1 or 2 bit UCI payload (e.g., generated by processor(s) 410), FDM based multiplexing of DM-RS and UCI symbols (e.g., by processor(s) 41 0 and transceiver circuitry 420) can increase the PAPR or CM for transmission (e.g., via transceiver circuitry 420) of the UL control channel transmission (e.g., via processor(s) 410). In power limited scenario, however, this can result in employing more output power backoff.

[0081] As one example, in various aspects, for short PUCCH carrying 1 or 2 bit UCI payload, a 50% DM-RS overhead can provide good performance for transmission (e.g., via transceiver circuitry 420) of a UL control channel (e.g., generated by processor(s) 41 0). Referring to FIG. 9, illustrated is a diagram showing one example of DM-RS and UCI symbol positions within one physical resource block (PRB), according to various aspects discussed herein. In various aspects, one or more PRBs can be allocated (e.g., via signaling generated by processor(s) 510, transmitted by communication circuitry 520, received by transceiver circuitry 420, and processed by processor(s) 410) for short PUCCH carrying 1 or 2 bit UCI information (e.g., generated by processor(s) 410). In the example of FIG. 9, resource elements (REs) used for the transmission (e.g., via transceiver circuitry 420) of DM-RS and UCI symbols (e.g., generated by processor(s) 41 0) can be interleaved (e.g., by processor(s) 410 and transceiver circuitry 420), such that DM-RS (e.g., generated by processor(s) 410) can be transmitted (e.g., by transceiver circuitry 420) in the odd REs and UCI symbols (e.g., generated by processor(s) 410) can be transmitted (e.g., via transceiver circuitry 420) in the even REs, or vice versa. In various aspects, the starting RE for the transmission (e.g., via transceiver circuitry 420) of DM-RS and UCI symbols (e.g., generated by processor(s) 41 0) can be configured by higher layer signaling via NR minimum system information (MSI), NR remaining minimum system information (RMSI), NR other system information (OSI), or radio resource control (RRC) signaling or dynamically indicated in the DCI (e.g., wherein the higher layer signaling and/or DCI can be generated by processor(s) 51 0, transmitted by communication circuitry 520, received by transceiver circuitry 420, and processed by processor(s) 410). Additionally, in aspects, the starting RE for the transmission (e.g., via transceiver circuitry 420) of DM-RS (e.g., generated by processor(s) 410) can be cell specific or UE specific. In UE-specific scenarios, in one example, DM-RS transmission for UE#1 can start from RE#0 while DM-RS transmission for UE #2 can start from RE#1 .

[0082] Referring to FIG. 10, illustrated is a diagram showing CM analysis for short PUCCH with 1 or 2 UCI bits for different root indexes, according to various aspects discussed herein. In the simulations that generated the data shown in FIG. 10, a length- 12 computer generated sequence in LTE (Long Term Evolution) was used to generate the sequence for DM-RS and the spreading sequence for UCI symbols, respectively. Additionally, FDM based multiplexing of DM-RS and UCI symbols was employed for short PUCCH in connection with FIG. 10.

[0083] As can be seen in FIG. 10, the worst CM can be observed in the case when the same sequence is used (e.g., by processor(s) 410 and transceiver circuitry 420) for DM-RS and spreading sequences for UCI symbol for short PUCCH carrying 1 or 2 bit payload (e.g., generated by processor(s) 410). Additionally, in aspects, by carefully selecting the best cyclic shift pair from different sequences, the CM can be reduced significantly. In various aspects discussed herein, the best cyclic shift pair for the generation of DM-RS and spreading sequences for UCI symbols can achieve > 1 dB better CM when compared to the scenario wherein the same sequence is used (e.g., by processor(s) 410 and transceiver circuitry 420) for some root indexes.

[0084] As can be seen from the CM analysis, different sequences can be applied (e.g., by processor(s) 410 and transceiver circuitry 420) for DM-RS and spreading sequence for UCI symbols to reduce the CM for short PUCCH carrying a 1 or 2 bit UCI payload.

CM Reduction for Short PUCCH Carrying 1 or 2 Bit UCI Information

[0085] In various aspects, in connection with a sequence design for short PUCCH, the sequence(s) used for DM-RS and a spreading sequence for UCI symbols can be generated based on one or more of computer generated sequence(s), Walsh

sequence(s), M-sequence(s), Hadamard sequence(s), or other sequence(s).

[0086] In various aspects involving scenarios wherein a computer generated sequence is used (e.g., by processor(s) 410 and transceiver circuitry 420) as the sequence for DM-RS and spreading sequence for UCI symbols, the root index of the computer generated sequence can be defined as a function of one or more of the following parameters: a physical cell ID, a virtual cell ID, or a symbol/mini- slot/slot/subframe/frame index.

[0087] Additionally, in aspects, a cyclic shift value can be defined as a combination of a parameter which can be a cell specific random value, a parameter which can be configured by higher layers (e.g., generated by processor(s) 510, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410), and/or a parameter which can be signaled in the DCI (e.g., generated by processor(s) 510, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410). In one example, similar to the LTE specification, the cyclic shift for DM-RS generation can be determined by three values: (a) a 3-bit cell specific broadcast cyclic time shift offset parameter ⁿDMRs_> C³) 3-bit cyclic time shift offset that can be indicated in the DCI for each uplink scheduling grant n^_RS and (c) a pseudo-random cyclic shift offset that can be obtained from the output of the length-31 Gold sequence generator n_PN(n_s). As one specific example, in various aspects, the cyclic shift value can be determined as in equation (1 ):

where n_s is the slot index.

[0088] In various aspects involving scenarios wherein a Walsh sequence or a Hadamard sequence is used (e.g., by processor(s) 41 0 and transceiver circuitry 420) for DM-RS and a spreading sequence for UCI symbols, a random pseudo noise (PN) sequence can be used (e.g., by processor(s) 41 0) to scramble the DM-RS and spreading sequence for UCI symbols, which can help to reduce the PAPR/CM for the transmission of short PUCCH. The random sequence can be generated (e.g., by processor(s) 410) as a function of one or more of the following parameters: a physical cell ID, a virtual cell ID, or a symbol/mini-slot/slot/subframe/frame index.

[0089] In various aspects, the sequence design and signaling mechanism(s) to reduce CM for short PUCCH can be as discussed below.

[0090] In some embodiments, different sequences for DM-RS and spreading sequences used for UCI symbols can be configured by higher layers or dynamically indicated in the DCI or a combination thereof (e.g., generated by processor(s) 510, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410). In various such aspects, the UE can employ distinct sequences for DM-RS and spreading sequences used for UCI symbols.

[0091] In scenarios wherein a computer generated sequence is employed, the same root sequence can be used (e.g., by processor(s) 410) for the DM-RS and the spreading sequence for UCI symbols. Additionally, in aspects, different cyclic shift values can be assigned to generate (e.g., via processor(s) 410) DM-RS and spreading sequence for UCI symbols.

[0092] As discussed above, in aspects, the cyclic shift value can be defined as a combination of a parameter which can be a cell specific random value, a parameter which can be configured by higher layers, and/or a parameter which can be signaled in the DCI (e.g., wherein the higher layer signaling and/or DCI can be generated by processor(s) 510, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410). In such scenarios, the parameter which can be a cell specific random value and the parameter which can be configured by higher layers can be the same for the generation of DM-RS and the spreading sequence for UCI symbols. Additionally, in various aspects, the parameter which can be signaled in the DCI can be independently signaled for the generation of DM-RS and spreading sequence for UCI symbols.

[0093] In one example, the cyclic shift values for the generation of DM-RS and spreading sequence for UCI symbols can be determined by equations (2) and (3), respectively: ⁿCS,DMRS — [^DMRS + ⁿDMRS + PJv( s)J mod(K)

ncs.uci = (ⁿDMRS + ⁿuci + n_PN(n_s)^mod(K) where n^_RS and are the cyclic time shift offset indicated in the DCI for the generation of DM-RS and spreading sequence for UCI symbols, respectively, and K is a fixed value, e.g., K = 12 or 6.

[0094] In other aspects, a sequence index offset between DM-RS and spreading sequence for UCI symbols can be defined. The sequence index offset can be fixed or predefined in the specification, or can be configured by higher layers via NR MSI, NR RMSI, NR OSI, or RRC signaling (e.g., generated by processor(s) 510, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410).

[0095] In aspects wherein a ZC sequence is employed, a cyclic shift offset between DM-RS and spreading sequence for UCI symbols can be applied. In one example, assuming a fixed cyclic shift offset, the cyclic shift value for the generation (e.g., by processor(s) 410) of DM-RS and spreading sequence for UCI symbols can be determined by equations (4) and (5), respectively: nCS,DMRS = (ⁿD KS ^{+ n}D^< MRS + PJV ( s))^m°d(^)

n_Cs,uci = (n_{CS DMRS} + A)mod(tf) where Δ is a fixed cyclic shift offset. Although in the example, the spreading sequence for UCI symbols can be derived (e.g., by processor(s) 410) from the DM-RS sequence, in various aspects, the design can be straightforwardly extended to scenarios wherein

DM-RS sequence is derived from spreading sequence for UCI symbols. In such scenarios, the cyclic shift used for the generation (e.g., via processor(s) 410) of spreading sequences for UCI symbols can be signaled to UE (e.g., higher layer and/or

DCI signaling generated by processor(s) 510, transmitted via communication circuitry

520, received via transceiver circuitry 420, and processed by processor(s) 410).

[0096] Referring to FIG. 11 , illustrated is a pair of diagrams showing CM for short UL control channel with different root indexes, according to various aspects discussed herein. In the simulations that generated the data shown in FIG. 1 1 was generated, as example embodiments, the cyclic shift value for DM-RS sequence was fixed to 2 and 9 in the upper and lower charts, respectively. In the simulations, two options were considered for different sequences: (a) the best cyclic shift pairs as discussed above and (b) a fixed cyclic shift gap of 1 . As can be seen in FIG. 1 1 , a similar trend can be observed, which is that with carefully selected cyclic shift pairs for DM-RS and spreading sequence for UCI symbols, CM can be reduced substantially. Additionally, in aspects wherein a fixed cyclic shift gap is employed (e.g., by processor(s) 410 and transceiver circuitry 420) for DM-RS and the spreading sequence for UCI symbols, for most root indexes, a 0.5dB - 1 .5dB CM improvement can be achieved compared to the scenario wherein the same sequence is applied.

[0097] In various aspects, a sequence index offset between DM-RS and the spreading sequence for UCI symbols can be defined. In aspects, the sequence index offset can be defined as a function of a root index and/or a sequence index from one of the DM-RS or the spreading sequence for UCI symbols. In various such aspects, a look up table can be defined for the sequence index offset for each root index and/or sequence index for DM-RS or spreading sequence for UCI symbols.

[0098] In scenarios wherein a ZC sequence is employed (e.g., by processor(s) 410 and transceiver circuitry 420), a cyclic shift offset between DM-RS and spreading sequence for UCI symbols can be applied (e.g., by processor(s) 41 0). In one example, the cyclic shift value for the generation (e.g., by processor(s) 41 0) of DM-RS and spreading sequence for UCI symbols can be determined by equations (6) and (7):

ncs,uci— {n_Cs,DMRS + Δ(Μ, n_{CS DMRS}))mod(K) where &(u, n_{CS DMRS}) is a fixed cyclic shift offset, which can be a function of the root index and the cyclic shift value for DM-RS sequence.

[0099] In various aspects, a phase offset can be applied (e.g., by processor(s) 410) for the transmission (e.g., by transceiver circuitry 420) of DM-RS and spreading sequence for UCI symbol (e.g., generated by processor(s) 410). The phase offset can be predefined in the specification or can be configured by higher layer via NR MSI, NR RMSI, NR OSI, or RRC signaling, or dynamically indicated in the DCI, or a combination thereof (e.g., generated by processor(s) 510, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410). In various such aspects, the phase offset can be defined as a function of the root index and/or the sequence index from one of DM-RS and the spreading sequence for UCI symbols.

[00100] In various such aspects, assuming sequence for DM-RS as b^w =

[bo. bi,^■■■ , b_N], where N is the length of sequence, and the phase offset as /?, then the spreading sequence used for UCI symbols can be determined by equation (8): b∞ = expOjS) · = expOjS)^■ [bo , " , VI (8).

[00101 ] Additionally, in various aspects, the same sequence or different sequences can be employed (e.g., by processor(s) 410) for the transmission (by processor(s) 410) of DM-RS and spreading sequence for UCI symbols in case when the phase offset is applied (e.g., by processor(s) 410). In addition, the aforementioned methods for CM reduction can be employed (e.g., by processor(s) 410) in conjunction with the phase offset. In one example, a sequence index offset and phase offset can be applied

together (e.g., by processor(s) 410) for the transmission (e.g., via transceiver circuitry 420) of DM-RS and spreading sequence used for UCI symbols (e.g., generated by processor(s) 410).

[00102] In various aspects, the same design principles can be applied in scenarios involving transmit diversity wherein multiple antenna ports (AP) can be used (e.g., by processor(s) 410 and transceiver circuitry 420) for the transmission of short PUCCH. In various such aspects, each antenna port for short PUCCH transmission can be

assigned (e.g., by processor(s) 410) with an orthogonal sequence for both DM-RS and spreading sequences used for UCI symbols.

CM Reduction for Short PUCCH in Distributed Transmission Mode

[00103] Scenarios involving distributed transmission - where two or more resources are allocated for the transmission (e.g., by transceiver circuitry 420) of short PUCCH carrying 1 or 2 bit information (e.g., generated by processor(s) 410) - can employ similar designs and techniques to those discussed above. In various aspects, CM reduction for short PUCCH in a distributed transmission mode can be facilitated based on techniques and mechanisms discussed below.

[00104] In various aspects, in scenarios wherein a short sequence is applied (e.g., by processor(s) 410) for both DM-RS and the spreading sequence for UCI symbols on each frequency resource, different sequences can be employed (e.g., by processor(s) 41 0). [00105] In one option, the same base or root sequence and/or different cyclic shift values can be employed (e.g., by processor(s) 410). As discussed above, within the same frequency resource, a cyclic shift offset can be employed (e.g., by processor(s) 41 0) to reduce PAPR. However, across different resources, cyclic shift hopping pattern (e.g., employed by processor(s) 41 0 and transceiver circuitry 420) can be predefined in the specification or can be defined as a function of one or more of the following parameters: a physical cell ID, a virtual cell ID, a cyclic shift value in the first frequency resource, a symbol/mini-slot/slot/frame index, a frequency resource index, or a UE ID (e.g., Cell Radio Network Temporary Identifier (C-RNTI)).

[00106] Referring to FIG. 12, illustrated is a diagram showing one example of sequences that can be employed (e.g., by processor(s) 41 0) for short PUCCH with distributed transmission (e.g., via transceiver circuitry 420), according to various aspects discussed herein. In the example of FIG. 12, cyclic shift (CS) hopping can be performed (e.g., by processor(s) 410) for the transmission (e.g., via transceiver circuitry 420) of DM-RS (e.g., generated by processor(s) 410) in two resources, while a fixed CS offset (e.g., Δ as discussed herein) can be applied (e.g., by processor(s) 410) between DM-RS and spreading sequence for UCI symbols (e.g., as generated by processor(s) 41 0) in the same frequency resources.

[00107] In various aspects, the same or different sequences can be applied (e.g., by processor(s) 410) for DM-RS and spreading sequences for UCI symbols (e.g., generated by processor(s) 410) in different frequency resources. Additionally, in aspects, different phase rotations can be applied (e.g., by processor(s) 410) for the same or different frequency resources.

[00108] In various aspects, a long sequence for both DM-RS and spreading sequence for UCI symbols can be directly mapped (e.g., by processor(s) 410) to multiple frequency resources used for NR PUCCH transmission. As one example, assuming two frequency resources for NR PUCCH transmission where each resource occupies 2 physical resource blocks (PRB), a length-24 sequence based on a computer generated sequence for both DM-RS and spreading sequences for UCI symbols can be directly mapped (e.g., by processor(s) 410) to these two frequency resources. Further, as mentioned above, a cyclic shift offset can be applied (e.g., by processor(s) 410) between these two sequences for DM-RS and the spreading sequence for UCI symbols.

DM-RS Pattern for Short PUCCH Spanning Two Symbols [00109] In connection with the second set of aspects, as discussed above, in various aspects, the DM-RS density for the transmission of UL control channel spanning more than one symbol can be configured (e.g., via higher layer signaling and/or DCI generated by processor(s) 510, transmitted by communication circuitry 520, received by transceiver circuitry 420, and processed by processor(s) 410). In various aspects, NR can support at least FDM-based multiplexing of DM-RS and UCI symbols when short PUCCH spans one OFDM symbol. Referring to FIG. 13, illustrated is a pair of diagrams showing two options of DM-RS patterns employable in scenarios wherein NR PUCCH spans two symbols and DM-RS and UCI symbols are multiplexed at least in part in a FDM-based manner, according to various aspects discussed herein. As can be seen in FIG. 13, in various aspects, DM-RS (e.g., generated by processor(s) 41 0) can be transmitted (e.g., by transceiver circuitry 420) in two symbols (e.g., as in the left diagram) or only transmitted in the first symbol (e.g., as in the right diagram) for short PUCCH.

[00110] Referring to FIG. 14, illustrated is a pair of diagrams showing two options of DM-RS patterns employable in scenarios wherein NR PUCCH spans two symbols and DM-RS and UCI symbols are multiplexed in a TDM-based manner, according to various aspects discussed herein. As can be seen in FIG. 14, in various aspects, DM-RS (e.g., generated by processor(s) 410) can be transmitted (e.g., by transceiver circuitry 420) in two symbols (e.g., as in the right diagram) or only transmitted in the first symbol (e.g., as in the left diagram) for short PUCCH.

[00111 ] For any of the options discussed herein for the second set of aspects, whether DM-RS (e.g., generated by processor(s) 410) is transmitted (e.g., via transceiver circuitry 420) in two symbols or first symbol can be configured by higher layer via NR MSI, RMSI, OSI, or RRC signaling, or this information can be implicitly or explicitly indicated by downlink control channel (DCI) (e.g., wherein the higher layer signaling and/or DCI can be generated by processor(s) 510, transmitted by

communication circuitry 520, received by transceiver circuitry 420, and processed by processor(s) 410).

[00112] Additionally, in some scenarios, whether DM-RS (e.g., generated by processor(s) 410) is transmitted (e.g., via transceiver circuitry 420) in two symbols or one (e.g., a first) symbol can be predefined in the specification. For example, for the HARQ (Hybrid Automatic Repeat Request)-ACK (Acknowledgment) feedback of Msg. (message) 4 transmission in the random access procedure (over RACH (Random Access Channel), DM-RS (e.g., generated by processor(s) 410) is transmitted (e.g., via transceiver circuitry 420) in two symbols.

[00113] Additionally, in various aspects, whether DM-RS is transmitted in two symbols or one (e.g., a first) symbol can vary depending on UCI type. As an example, for HARQ- ACK feedback (e.g., generated by processor(s) 410), DM-RS (e.g., generated by processor(s) 410) can be transmitted (e.g., via transceiver circuitry 420) over two symbols, while for a channel state information (CSI) report (e.g., generated by processor(s) 410), DM-RS (e.g., generated by processor(s) 410) can be transmitted (e.g., via transceiver circuitry 420) in one (e.g., the first) symbol.

[00114] In various aspects, similar techniques can be employed in scenarios wherein PUCCH spans more than two symbols. As one example, for long PUCCH, the DM-RS density can be configured by higher layers (e.g., via higher layer signaling generated by processor(s) 510, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410).

Additional Embodiments

[00115] Referring to FIG. 15, illustrated is a flow diagram of an example method 1 500 employable at a UE that facilitates configuration of a NR PUCCH to provide one or more of reduced CM or configurable DM-RS density, according to various aspects discussed herein. In other aspects, a machine readable medium can store instructions associated with method 1500 that, when executed, can cause a UE to perform the acts of method 1500.

[00116] At 1510, configuration signaling can be received that indicates sequence indexes for DM-RS and a spreading sequence for UCI symbols, and can optionally also indicate other parameters associated with the DM-RS (e.g., including but not limited to

DM-RS density) and/or spreading sequence for UCI symbols.

[00117] At 1520, PUCCH can be transmitted that comprises the DM-RS and UCI symbols generated based at least in part on the configuration signaling.

[00118] Additionally or alternatively, method 1500 can include one or more other acts described herein in connection with receiving entity aspects of system 400.

[00119] Referring to FIG. 16, illustrated is a flow diagram of an example method 1 600 employable at a BS that facilitates configuration of a NR PUCCH to provide one or more of reduced CM or configurable DM-RS density, according to various aspects discussed herein. In other aspects, a machine readable medium can store instructions associated with method 1600 that, when executed, can cause a BS (e.g., eNB, gNB, etc.) to perform the acts of method 1600.

[00120] At 1610, configuration signaling can be generated that indicates sequence indexes for DM-RS and a spreading sequence for UCI symbols, and can optionally also indicate other parameters associated with the DM-RS (e.g., including but not limited to DM-RS density) and/or spreading sequence for UCI symbols.

[00121 ] At 1520, PUCCH can be received that comprises the DM-RS and UCI symbols based at least in part on the configuration signaling.

[00122] Additionally or alternatively, method 1600 can include one or more other acts described herein in connection with transmitting entity aspects of system 500.

[00123] A first example embodiment employable in connection with aspects discussed herein can comprise a system and/or method of wireless communication for a fifth generation (5G) or new radio (NR) system: configuring, by a BS (e.g., NR NodeB (gNB)), different sequence indexes for Demodulation reference signal (DM-RS) and spreading sequence for uplink control information (UCI) symbols for short UL control channel, respectively (e.g., via configuration signaling generated by processor(s) 510, transmitted by communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410); and transmitting, by the UE, the short UL control channel including DM-RS and UCI symbols in accordance with the configured different sequence indexes (e.g., wherein short NR PUCCH is generated by processor(s) 410, transmitted by transceiver circuitry 420, received by communication circuitry 520, and processed by processor(s) 510).

[00124] In various aspects of the first example embodiment, the sequence used (e.g., by processor(s) 41 0) for DM-RS and spreading sequence for UCI symbols can be generated based on one of a Zadoff-Chu (ZC) sequence, a Walsh sequence, a M- sequence, a Hadamard sequence, or computer generated sequence.

[00125] In various aspects of the first example embodiment, when a ZC sequence is used (e.g., by processor(s) 410) for the sequence for DM-RS and spreading sequence for UCI symbols, the root index of the computer generated sequence can be defined as a function of at least one or more following parameters: a physical cell ID, a virtual cell ID, or a symbol/mini-slot/slot/subframe/frame index. In various such aspects, a cyclic shift value can be defined as a combination of one or more of a first parameter which can be a cell specific random value, a second parameter which can be configured by higher layers, and/or a third parameter which can be signaled in DCI (e.g., generated by processor(s) 510, transmitted by communication circuitry 520, received by transceiver circuitry 420, and processed by processor(s) 410).

[00126] In various aspects of the first example embodiment, a Walsh sequence or a Hadamard sequence can be used (e.g., by processor(s) 410) for DM-RS and spreading sequence for UCI symbols, and a random sequence can be used (e.g., by processor(s) 41 0) to scramble the DM-RS and spreading sequence for UCI symbols; wherein the random sequence can be generated as a function of one or more of the following parameters: a physical cell ID, a virtual cell ID, or a symbol/mini- slot/slot/subframe/frame index.

[00127] In various aspects of the first example embodiment, different sequences for DM-RS and spreading sequences used for UCI symbols can be configured by higher layers or dynamically indicated in the DCI or a combination thereof (e.g., via higher layer signaling and/or DCI generated by processor(s) 510, transmitted by

communication circuitry 520, received by transceiver circuitry 420, and processed by processor(s) 410), wherein the UE can expect different sequences for DM-RS and spreading sequences used for UCI symbols. In various such aspects, when a ZC sequence is employed (e.g., by processor(s) 41 0), the same root sequence can be used (e.g., by processor(s) 410) for DM-RS and spreading sequence for UCI symbols;

wherein different cyclic shift values can be assigned to generate (e.g., by processor(s) 41 0) DM-RS and spreading sequence for UCI symbols.

[00128] In various aspects of the first example embodiment, a sequence index offset between DM-RS and spreading sequence for UCI symbols can be defined; wherein the sequence index offset can be fixed or predefined in the specification, or configured by higher layers via NR MSI, RMSI, OSI, or RRC signaling (e.g., generated by

processor(s) 510, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410). In various such aspects, when a computer generated sequence is employed (e.g., by processor(s) 410), a cyclic shift offset between DM-RS and spreading sequence for UCI symbols can be applied (e.g., by processor(s) 41 0).

[00129] In various aspects of the first example embodiment, a sequence index offset between DM-RS and spreading sequence for UCI symbols can be defined; wherein the sequence index offset can be defined as a function of root index and/or sequence index from one of the DM-RS and the spreading sequence for UCI symbols; wherein a look up table can be defined for the sequence index offset for each root index and/or sequence index for the DM-RS or the spreading sequence for UCI symbols. [00130] In various aspects of the first example embodiment, a phase offset can be applied (e.g., by processor(s) 410) for the transmission of DM-RS and spreading sequence for UCI symbol; wherein the phase offset can be predefined in the

specification or configured by higher layer via NR MSI, RMSI, OSI, RRC, or dynamically indicated in the DCI or a combination thereof (e.g., wherein the higher layer signaling and/or DCI can be generated by processor(s) 51 0, transmitted via communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410). In various such aspects, the phase offset can be defined as a function of root index and/or sequence index from one of the DM-RS and the spreading sequence for UCI symbols.

[00131 ] In various aspects of the first example embodiment, the same or different sequences can be applied (e.g., by processor(s) 410) for both DM-RS and spreading sequence for UCI symbols on each frequency resource in scenarios involving

distributed transmission for NR PUCCH, where one or more resources are allocated. In various such aspects, the same base or root sequence and/or different cyclic shift values can be employed (e.g., by processor(s) 410); wherein a cyclic shift offset can be applied when within the same frequency resource; wherein when across different resources, a cyclic shift hopping pattern can be predefined in the specification or can be defined as a function of one or more of the following parameters: a physical cell ID, a virtual cell ID, a cyclic shift value in the first frequency resource, a symbol/mini- slot/slot/frame index, a frequency resource index, or a UE ID (e.g., Cell Radio Network Temporary Identifier (C-RNTI)). In various such aspects, the same or different sequences can be applied (e.g., by processor(s) 410) for DM-RS and spreading sequences for UCI symbols in different frequency resources; wherein different phase rotations can be applied (e.g., by processor(s) 410)) for the same or different frequency resources. In various such aspects, a long sequence for both DM-RS and spreading sequence for UCI symbols can be directly mapped (e.g., by processor(s) 410) to multiple frequency resources used for NR PUCCH transmission.

[00132] A second example embodiment employable in connection with aspects discussed herein can comprise a system and method of wireless communication for a fifth generation (5G) or new radio (NR) system, comprising: configuring, by a BS (e.g., NR NodeB (gNB)) whether Demodulation Reference Signal (DM-RS) is transmitted in two symbols or a first symbol when NR physical uplink control channel (NR PUCCH) spans two symbols (e.g., via configuration signaling generated by processor(s) 510, transmitted by communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410); and transmitting (e.g., via transceiver circuitry 420), by the UE, the DM-RS (e.g., generated by processor(s) 410) associated with NR PUCCH in accordance with the configuration.

[00133] In various aspects of the second example embodiment, whether DM-RS is transmitted in two symbols or a first symbol can be configured by higher layer via NR MSI, RMSI, OSI, or RRC signaling (e.g., generated by processor(s) 510, transmitted by communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410).

[00134] In various aspects of the second example embodiment, whether DM-RS is transmitted in two symbols or first symbol can be implicitly or explicitly indicated by downlink control channel (DCI) (e.g., generated by processor(s) 510, transmitted by communication circuitry 520, received via transceiver circuitry 420, and processed by processor(s) 410).

[00135] In various aspects of the second example embodiment, whether DM-RS is transmitted in two symbols or first symbol can depend on the UCI type with which the DM-RS is associated.

[00136] Examples herein can include subject matter such as a method, means for performing acts or blocks of the method, at least one machine-readable medium including executable instructions that, when performed by a machine (e.g., a processor with memory, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or the like) cause the machine to perform acts of the method or of an apparatus or system for concurrent communication using multiple communication technologies according to embodiments and examples described.

[00137] Example 1 is an apparatus configured to be employed in a UE (User

Equipment), comprising: a memory interface; and processing circuitry configured to: process first signaling that indicates a first sequence index for DM (Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols; generate a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS based on the first sequence index and the UCI symbols based on the second sequence index; and send the first sequence index and the second sequence index to a memory via the memory interface.

[00138] Example 2 comprises the subject matter of any variation of any of example(s) 1 , wherein the processing circuitry is further configured to: generate the DM-RS based on one of a ZC (Zadoff-Chu) sequence, a Walsh sequence, a M-sequence, a Hadamard sequence, or a computer generated sequence; and generate the spreading sequence for the UCI symbols based on one of the ZC sequence, the Walsh sequence, the M- sequence, the Hadamard sequence, or the computer generated sequence.

[00139] Example 3 comprises the subject matter of any variation of any of example(s)

2, wherein both the DM-RS and the spreading sequence for the UCI symbols are generated based on the computer generated sequence, wherein a root sequence of the computer generated sequence is based at least in part on one or more of a physical cell ID (Identifier), a virtual cell ID, a symbol index, a symbol index, a mini-slot index, a slot index, a subframe index, or a frame index.

[00140] Example 4 comprises the subject matter of any variation of any of example(s)

3, wherein the processing circuitry is configured to apply at least one of a first cyclic shift to the DM-RS or a second cyclic shift the spreading sequence to the UCI symbols, wherein a first value of the first cyclic shift and a second value of the second cyclic shift are based at least in part on one or more of a first parameter that is a cell-specific random value, a second parameter configured by higher layers, or a third parameter signaled in a DCI message.

[00141 ] Example 5 comprises the subject matter of any variation of any of example(s) 2-4, wherein both the DM-RS and the spreading sequence for the UCI symbols are generated based on the Walsh sequence or the Hadamard sequence, wherein the processing circuitry is further configured to scramble the DM-RS and the spreading sequence for the UCI symbols based on a random sequence, wherein the random sequence is generated based at least in part on one or more of a physical cell ID (Identifier), a virtual cell ID, a symbol index, a symbol index, a mini-slot index, a slot index, a subframe index, or a frame index.

[00142] Example 6 comprises the subject matter of any variation of any of example(s) 2-4, wherein both the DM-RS and the spreading sequence for the UCI symbols are generated based on the ZC sequence, wherein both the DM-RS and the spreading sequence for the UCI symbols are based on a common root sequence, wherein the DM- RS is based on a first cyclic shift value, wherein the spreading sequence for the UCI symbols is based on a second cyclic shift value, wherein the first cyclic shift value is distinct from the second cyclic shift value.

[00143] Example 7 comprises the subject matter of any variation of any of example(s) 2-4, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a sequence index offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the sequence index offset is one of predefined or configured via first higher layer signaling, wherein the first higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00144] Example 8 comprises the subject matter of any variation of any of example(s) 7, wherein both the DM-RS and the spreading sequence for the UCI symbols are generated based on the computer generated sequence, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a cyclic shift offset between the DM-RS and the spreading sequence for the UCI symbols.

[00145] Example 9 comprises the subject matter of any variation of any of example(s) 2-4, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a sequence index offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the sequence index offset is based at least in part on one or more of a root index of the DM- RS, a root index of the spreading sequence for the UCI symbols, a sequence index of the DM-RS, or a sequence index of the spreading sequence for the UCI symbols.

[00146] Example 10 comprises the subject matter of any variation of any of example(s) 2-4, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a phase offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the phase offset is predefined or configured via one or more of DCI (Downlink Control Information) or second higher layer signaling, wherein the second higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI

(Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00147] Example 1 1 comprises the subject matter of any variation of any of example(s) 10, wherein the phase offset is based at least in part on one or more of a root index of the DM-RS, a root index of the spreading sequence for the UCI symbols, a sequence index of the DM-RS, or a sequence index of the spreading sequence for the UCI symbols.

[00148] Example 12 comprises the subject matter of any variation of any of example(s) 1 -4, wherein the NR PUCCH spans two or more symbols, and wherein the processing circuitry is further configured to: process second signaling that indicates whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols; and map the NR PUCCH to the two or more symbols based at least in part on the second signaling.

[00149] Example 13 comprises the subject matter of any variation of any of example(s) 1 -4, wherein the processing circuitry is further configured to map the NR PUCCH in a distributed manner to a plurality of frequency resources.

[00150] Example 14 comprises the subject matter of any variation of any of example(s) 1 -4, wherein the first signaling comprises one or more of first higher layer signaling or a DCI (Downlink Control Information) message, wherein the first higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00151 ] Example 15 comprises the subject matter of any variation of any of example(s) 2-5, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a phase offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the phase offset is predefined or configured via one or more of DCI (Downlink Control Information) or second higher layer signaling, wherein the second higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI

[00152] Example 16 comprises the subject matter of any variation of any of example(s) 1 -7, wherein the NR PUCCH spans two or more symbols, and wherein the processing circuitry is further configured to: process second signaling that indicates whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols; and map the NR PUCCH to the two or more symbols based at least in part on the second signaling.

[00153] Example 17 comprises the subject matter of any variation of any of example(s) 1 -8, wherein the processing circuitry is further configured to map the NR PUCCH in a distributed manner to a plurality of frequency resources.

[00154] Example 18 comprises the subject matter of any variation of any of example(s) 1 -9, wherein the first signaling comprises one or more of first higher layer signaling or a DCI (Downlink Control Information) message, wherein the first higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling. [00155] Example 19 is an apparatus configured to be employed in a gNB (next generation Node B), comprising: a memory interface; and processing circuitry configured to: generate first signaling that indicates a first sequence index for DM (Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols; process a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS and the UCI symbols, wherein the DM-RS are based on the first sequence index, and wherein the UCI symbols are based on the second sequence index; and send the first sequence index and the second sequence index to a memory via the memory interface.

[00156] Example 20 comprises the subject matter of any variation of any of example(s) 19, wherein the first signaling comprises one or more of first higher layer signaling or a first DCI (Downlink Control Information) message, wherein the first higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00157] Example 21 comprises the subject matter of any variation of any of example(s) 19-20, wherein the processing circuitry is further configured to generate a second DCI (Downlink Control Information) message that indicates a cyclic shift parameter, wherein at least one of the DM-RS and the spreading sequence for the UCI symbols has a cyclic shift based at least in part on the cyclic shift parameter.

[00158] Example 22 comprises the subject matter of any variation of any of example(s) 19-20, wherein the processing circuitry is further configured to generate second signaling that indicates a sequence index offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the second signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00159] Example 23 comprises the subject matter of any variation of any of example(s) 19-20, wherein the processing circuitry is further configured to generate third signaling that indicates a phase offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the second signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00160] Example 24 comprises the subject matter of any variation of any of example(s) 19-21 , wherein the processing circuitry is further configured to generate second signaling that indicates a sequence index offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the second signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00161 ] Example 25 comprises the subject matter of any variation of any of example(s) 19-22, wherein the processing circuitry is further configured to generate third signaling that indicates a phase offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the second signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00162] Example 26 is a machine readable medium comprising instructions that, when executed, cause a UE (User Equipment) to: receive first signaling that indicates a first sequence index for DM (Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols; and transmit a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS based on the first sequence index and the UCI symbols based on the second sequence index.

[00163] Example 27 comprises the subject matter of any variation of any of example(s) 26, wherein the NR PUCCH spans two or more symbols, and wherein the instructions, when executed, further cause the UE to: receive second signaling that indicates whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols; and transmit the NR PUCCH via the two or more symbols based at least in part on the second signaling.

[00164] Example 28 comprises the subject matter of any variation of any of example(s) 27, wherein the second signaling comprises higher layer signaling, wherein the higher layer signaling comprises one or more of NR MSI (Minimum System

Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

[00165] Example 29 comprises the subject matter of any variation of any of example(s) 27, wherein the second signaling comprises DCI (Downlink Control

Information), wherein the DCI one of explicitly or implicitly indicates whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols.

[00166] Example 30 comprises the subject matter of any variation of any of example(s) 27, wherein the instructions, when executed, further cause the UE to determine, based at least on a UCI type of the UCI symbols, whether to map the DM- RS to each of the two or more symbols or to only a first symbol of the two or more symbols.

[00167] Example 31 comprises the subject matter of any variation of any of example(s) 26-30, wherein the instructions, when executed, further cause the UE to transmit the NR PUCCH via a distributed transmission over a plurality of frequency resources.

[00168] Example 32 comprises the subject matter of any variation of any of example(s) 31 , wherein the instructions, when executed, further cause the UE to: when the DM-RS and the UCI symbols are within a common frequency resource of the plurality of frequency resources, transmit the DM-RS and the UCI symbols based on a cyclic shift offset; and when the DM-RS and the UCI symbols are within distinct frequency resources of the plurality of frequency resources, transmit the DM-RS and the UCI symbols based on a cyclic shift hopping pattern, wherein the cyclic shift hopping pattern is one of predefined or based at least in part on one or more of a physical cell ID (Identifier), a virtual cell ID, a cyclic shift value in a first frequency resource of the plurality of frequency resources, a symbol index, a mini-slot index, a slot index, a subframe index, a frame index, a frequency resource index, or a C-RNTI (Cell Radio Network Temporary Identifier).

[00169] Example 33 comprises the subject matter of any variation of any of example(s) 31 , wherein the instructions, when executed, further cause the UE to transmit the DM-RS and the UCI symbols with distinct phase rotations.

[00170] Example 34 comprises the subject matter of any variation of any of example(s) 31 , wherein the instructions, when executed, further cause the UE to generate the DM-RS and the spreading sequence for the UCI symbols by directly mapping a long sequence to the plurality of frequency resources.

[00171 ] Example 35 is a machine readable medium comprising instructions that, when executed, cause a gNB (next generation Node B) to: transmit first signaling that indicates a first sequence index for DM (Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols; and receive a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS and the UCI symbols, wherein the DM-RS are based on the first sequence index, and wherein the UCI symbols are based on the second sequence index.

[00172] Example 36 comprises the subject matter of any variation of any of example(s) 35, wherein the DM-RS is based on one of a ZC (Zadoff-Chu) sequence, a Walsh sequence, a M-sequence, a Hadamard sequence, or a computer generated sequence, and wherein the spreading sequence for the UCI symbols is based on one of the ZC sequence, the Walsh sequence, the M-sequence, the Hadamard sequence, or the computer generated sequence.

[00173] Example 37 is an apparatus configured to be employed in a UE (User Equipment), comprising: means for receiving first signaling that indicates a first sequence index for DM (Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols; and means for transmitting a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS based on the first sequence index and the UCI symbols based on the second sequence index.

[00174] Example 38 comprises the subject matter of any variation of any of example(s) 37, wherein the NR PUCCH spans two or more symbols, and wherein the apparatus further comprises: means for receiving second signaling that indicates whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols; and means for transmitting the NR PUCCH via the two or more symbols based at least in part on the second signaling.

[00175] Example 39 comprises the subject matter of any variation of any of example(s) 38, wherein the second signaling comprises higher layer signaling, wherein the higher layer signaling comprises one or more of NR MSI (Minimum System

[00176] Example 40 comprises the subject matter of any variation of any of example(s) 38, wherein the second signaling comprises DCI (Downlink Control

[00177] Example 41 comprises the subject matter of any variation of any of example(s) 38, further comprising means for determining, based at least on a UCI type of the UCI symbols, whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols.

[00178] Example 42 comprises the subject matter of any variation of any of example(s) 37-41 , further comprising means for transmitting the NR PUCCH via a distributed transmission over a plurality of frequency resources. [00179] Example 43 comprises the subject matter of any variation of any of example(s) 42, further comprising: means for transmitting the DM-RS and the UCI symbols based on a cyclic shift offset, when the DM-RS and the UCI symbols are within a common frequency resource of the plurality of frequency resources; and means for transmitting the DM-RS and the UCI symbols based on a cyclic shift hopping pattern, when the DM-RS and the UCI symbols are within distinct frequency resources of the plurality of frequency resources, wherein the cyclic shift hopping pattern is one of predefined or based at least in part on one or more of a physical cell ID (Identifier), a virtual cell ID, a cyclic shift value in a first frequency resource of the plurality of frequency resources, a symbol index, a mini-slot index, a slot index, a subframe index, a frame index, a frequency resource index, or a C-RNTI (Cell Radio Network Temporary Identifier).

[00180] Example 44 comprises the subject matter of any variation of any of example(s) 42, further comprising transmitting the DM-RS and the UCI symbols with distinct phase rotations.

[00181 ] Example 45 comprises the subject matter of any variation of any of example(s) 42, further comprising generating the DM-RS and the spreading sequence for the UCI symbols by directly mapping a long sequence to the plurality of frequency resources.

[00182] Example 46 is an apparatus configured to be employed in a gNB (next generation Node B), comprising: means for transmitting first signaling that indicates a first sequence index for DM (Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols; and means for receiving a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS and the UCI symbols, wherein the DM-RS are based on the first sequence index, and wherein the UCI symbols are based on the second sequence index.

[00183] Example 47 comprises the subject matter of any variation of any of example(s) 46, wherein the DM-RS is based on one of a ZC (Zadoff-Chu) sequence, a Walsh sequence, a M-sequence, a Hadamard sequence, or a computer generated sequence, and wherein the spreading sequence for the UCI symbols is based on one of the ZC sequence, the Walsh sequence, the M-sequence, the Hadamard sequence, or the computer generated sequence.

[00184] Example 48 comprises an apparatus comprising means for executing any of the described operations of examples 1 -47. [00185] Example 49 comprises a machine readable medium that stores instructions for execution by a processor to perform any of the described operations of examples 1 - 47.

[00186] Example 50 comprises an apparatus comprising: a memory interface; and processing circuitry configured to: perform any of the described operations of examples 1 -47.

[00187] The above description of illustrated embodiments of the subject disclosure, including what is described in the Abstract, is not intended to be exhaustive or to limit the disclosed embodiments to the precise forms disclosed. While specific embodiments and examples are described herein for illustrative purposes, various modifications are possible that are considered within the scope of such embodiments and examples, as those skilled in the relevant art can recognize.

[00188] In this regard, while the disclosed subject matter has been described in connection with various embodiments and corresponding Figures, where applicable, it is to be understood that other similar embodiments can be used or modifications and additions can be made to the described embodiments for performing the same, similar, alternative, or substitute function of the disclosed subject matter without deviating therefrom. Therefore, the disclosed subject matter should not be limited to any single embodiment described herein, but rather should be construed in breadth and scope in accordance with the appended claims below.

[00189] In particular regard to the various functions performed by the above described components or structures (assemblies, devices, circuits, systems, etc.), the terms (including a reference to a "means") used to describe such components are intended to correspond, unless otherwise indicated, to any component or structure which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations. In addition, while a particular feature may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for any given or particular application.

Claims

CLAIMS What is claimed is:

1 . An apparatus configured to be employed in a UE (User Equipment), comprising: a memory interface; and

processing circuitry configured to:

process first signaling that indicates a first sequence index for DM

(Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols;

generate a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS based on the first sequence index and the UCI symbols based on the second sequence index; and

send the first sequence index and the second sequence index to a memory via the memory interface.

2. The apparatus of claim 1 , wherein the processing circuitry is further configured to:

generate the DM-RS based on one of a ZC (Zadoff-Chu) sequence, a Walsh sequence, a M-sequence, a Hadamard sequence, or a computer generated sequence; and

generate the spreading sequence for the UCI symbols based on one of the ZC sequence, the Walsh sequence, the M-sequence, the Hadamard sequence, or the computer generated sequence.

3. The apparatus of claim 2, wherein both the DM-RS and the spreading sequence for the UCI symbols are generated based on the computer generated sequence, wherein a root sequence of the computer generated sequence is based at least in part on one or more of a physical cell ID (Identifier), a virtual cell ID, a symbol index, a symbol index, a mini-slot index, a slot index, a subframe index, or a frame index.

4. The apparatus of claim 3, wherein the processing circuitry is configured to apply at least one of a first cyclic shift to the DM-RS or a second cyclic shift the spreading sequence to the UCI symbols, wherein a first value of the first cyclic shift and a second value of the second cyclic shift are based at least in part on one or more of a first parameter that is a cell-specific random value, a second parameter configured by higher layers, or a third parameter signaled in a DCI message.

5. The apparatus of any of claims 2-4, wherein both the DM-RS and the spreading sequence for the UCI symbols are generated based on the Walsh sequence or the Hadamard sequence, wherein the processing circuitry is further configured to scramble the DM-RS and the spreading sequence for the UCI symbols based on a random sequence, wherein the random sequence is generated based at least in part on one or more of a physical cell ID (Identifier), a virtual cell ID, a symbol index, a symbol index, a mini-slot index, a slot index, a subframe index, or a frame index.

6. The apparatus of any of claims 2-4, wherein both the DM-RS and the spreading sequence for the UCI symbols are generated based on the ZC sequence, wherein both the DM-RS and the spreading sequence for the UCI symbols are based on a common root sequence, wherein the DM-RS is based on a first cyclic shift value, wherein the spreading sequence for the UCI symbols is based on a second cyclic shift value, wherein the first cyclic shift value is distinct from the second cyclic shift value.

7. The apparatus of any of claims 2-4, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a sequence index offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the sequence index offset is one of predefined or configured via first higher layer signaling, wherein the first higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

8. The apparatus of claim 7, wherein both the DM-RS and the spreading sequence for the UCI symbols are generated based on the computer generated sequence, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a cyclic shift offset between the DM- RS and the spreading sequence for the UCI symbols.

9. The apparatus of any of claims 2-4, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a sequence index offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the sequence index offset is based at least in part on one or more of a root index of the DM-RS, a root index of the spreading sequence for the UCI symbols, a sequence index of the DM-RS, or a sequence index of the spreading sequence for the UCI symbols.

10. The apparatus of any of claims 2-4, wherein the processing circuitry is further configured to generate the DM-RS and the spreading sequence for the UCI symbols based on a phase offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the phase offset is predefined or configured via one or more of DCI (Downlink Control Information) or second higher layer signaling, wherein the second higher layer signaling comprises one or more of NR MSI (Minimum System

1 1 . The apparatus of claim 10, wherein the phase offset is based at least in part on one or more of a root index of the DM-RS, a root index of the spreading sequence for the UCI symbols, a sequence index of the DM-RS, or a sequence index of the spreading sequence for the UCI symbols.

12. The apparatus of any of claims 1 -4, wherein the NR PUCCH spans two or more symbols, and wherein the processing circuitry is further configured to:

process second signaling that indicates whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols; and

map the NR PUCCH to the two or more symbols based at least in part on the second signaling.

13. The apparatus of any of claims 1 -4, wherein the processing circuitry is further configured to map the NR PUCCH in a distributed manner to a plurality of frequency resources.

14. The apparatus of any of claims 1 -4, wherein the first signaling comprises one or more of first higher layer signaling or a DCI (Downlink Control Information) message, wherein the first higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

15. An apparatus configured to be employed in a gNB (next generation Node B), comprising:

a memory interface; and

processing circuitry configured to:

generate first signaling that indicates a first sequence index for DM (Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols;

process a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS and the UCI symbols, wherein the DM-RS are based on the first sequence index, and wherein the UCI symbols are based on the second sequence index; and

16. The apparatus of claim 15, wherein the first signaling comprises one or more of first higher layer signaling or a first DCI (Downlink Control Information) message, wherein the first higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

17. The apparatus of any of claims 15-16, wherein the processing circuitry is further configured to generate a second DCI (Downlink Control Information) message that indicates a cyclic shift parameter, wherein at least one of the DM-RS and the spreading sequence for the UCI symbols has a cyclic shift based at least in part on the cyclic shift parameter.

18. The apparatus of any of claims 15-16, wherein the processing circuitry is further configured to generate second signaling that indicates a sequence index offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the second signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

19. The apparatus of any of claims 15-16, wherein the processing circuitry is further configured to generate third signaling that indicates a phase offset between the DM-RS and the spreading sequence for the UCI symbols, wherein the second signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI

20. A machine readable medium comprising instructions that, when executed, cause a UE (User Equipment) to:

receive first signaling that indicates a first sequence index for DM

(Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols; and

transmit a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS based on the first sequence index and the UCI symbols based on the second sequence index.

21 . The machine readable medium of claim 20, wherein the NR PUCCH spans two or more symbols, and wherein the instructions, when executed, further cause the UE to: receive second signaling that indicates whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols; and

transmit the NR PUCCH via the two or more symbols based at least in part on the second signaling.

22. The machine readable medium of claim 21 , wherein the second signaling comprises higher layer signaling, wherein the higher layer signaling comprises one or more of NR MSI (Minimum System Information), NR RMSI (Remaining MSI), NR OSI (Other System Information), or RRC (Radio Resource Control) signaling.

23. The machine readable medium of claim 21 , wherein the second signaling comprises DCI (Downlink Control Information), wherein the DCI one of explicitly or implicitly indicates whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols.

24. The machine readable medium of claim 21 , wherein the instructions, when executed, further cause the UE to determine, based at least on a UCI type of the UCI symbols, whether to map the DM-RS to each of the two or more symbols or to only a first symbol of the two or more symbols.

25. The machine readable medium of any of claims 20-24, wherein the instructions, when executed, further cause the UE to transmit the NR PUCCH via a distributed transmission over a plurality of frequency resources.

26. The machine readable medium of claim 25, wherein the instructions, when executed, further cause the UE to:

when the DM-RS and the UCI symbols are within a common frequency resource of the plurality of frequency resources, transmit the DM-RS and the UCI symbols based on a cyclic shift offset; and

when the DM-RS and the UCI symbols are within distinct frequency resources of the plurality of frequency resources, transmit the DM-RS and the UCI symbols based on a cyclic shift hopping pattern, wherein the cyclic shift hopping pattern is one of predefined or based at least in part on one or more of a physical cell ID (Identifier), a virtual cell ID, a cyclic shift value in a first frequency resource of the plurality of frequency resources, a symbol index, a mini-slot index, a slot index, a subframe index, a frame index, a frequency resource index, or a C-RNTI (Cell Radio Network Temporary Identifier).

27. The machine readable medium of claim 25, wherein the instructions, when executed, further cause the UE to transmit the DM-RS and the UCI symbols with distinct phase rotations.

28. The machine readable medium of claim 25, wherein the instructions, when executed, further cause the UE to generate the DM-RS and the spreading sequence for the UCI symbols by directly mapping a long sequence to the plurality of frequency resources.

29. A machine readable medium comprising instructions that, when executed, cause a gNB (next generation Node B) to:

transmit first signaling that indicates a first sequence index for DM

(Demodulation)-RS (Reference Signal) and a second sequence index for a spreading sequence for UCI (Uplink Control Information) symbols; and receive a NR (New Radio) PUCCH (Physical Uplink Control Channel) comprising the DM-RS and the UCI symbols, wherein the DM-RS are based on the first sequence index, and wherein the UCI symbols are based on the second sequence index.

30. The machine readable medium of claim 29, wherein the DM-RS is based on one of a ZC (Zadoff-Chu) sequence, a Walsh sequence, a M-sequence, a Hadamard sequence, or a computer generated sequence, and wherein the spreading sequence for the UCI symbols is based on one of the ZC sequence, the Walsh sequence, the M- sequence, the Hadamard sequence, or the computer generated sequence.