CN110661601B - Positioning reference signal configuration method, network side equipment and terminal equipment - Google Patents

Abstract

Embodiments of the present invention disclose a positioning reference signal configuration method, a network side device, and a terminal device. The method includes: sending one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource. The embodiments of the present invention can realize that the network side device configures the PRS for the terminal device, so that the communication effectiveness can be improved.

Description

Positioning reference signal configuration method, network side device and terminal device

technical field

The present invention relates to the field of communications, and in particular, to a positioning reference signal configuration method, network side equipment and terminal equipment.

Background technique

A Positioning Reference Signal (PRS, Positioning Reference Signal) is generally used in an Observed Time Difference of Arrival (OTDOA, Observed Time Difference of Arrival) positioning method, and is used to determine the geographic location where a terminal equipment (UE, User Equipment) is located. In the OTDOA positioning method, the network side device sends PRS, and the UE determines its own geographic location by measuring the PRS of multiple network side devices.

However, in the fifth generation (5G) mobile communication system New Radio (NR, New Radio), there is still a lack of a corresponding solution to configure the PRS. The embodiment of the present invention takes the NR system as an example, but those skilled in the art can understand that the system does not constitute a limitation.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present invention is to provide a positioning reference signal configuration method, network side device and terminal device, which can effectively realize that the network side device configures the positioning reference signal for the terminal device.

In a first aspect, an embodiment of the present invention provides a positioning reference signal configuration method, which is applied to a network side device, and the method includes:

Sending one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource.

In a second aspect, an embodiment of the present invention provides a positioning reference signal configuration method, which is applied to a terminal device, and the method includes:

One or more PRS resource sets are received, wherein each PRS resource set includes at least one PRS resource.

In a third aspect, an embodiment of the present invention provides a network side device, including:

A sending module, configured to send one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource.

In a fourth aspect, an embodiment of the present invention provides a network-side device, including a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When executed, the steps of the positioning reference signal configuration method described in the first aspect are implemented.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the positioning reference signal according to the first aspect is implemented Steps to configure the method.

In a sixth aspect, an embodiment of the present invention provides a terminal device, including:

A receiving module, configured to receive one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource.

In a seventh aspect, an embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor At the same time, the steps of implementing the positioning reference signal configuration method according to the second aspect.

In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the positioning reference signal according to the second aspect is implemented Steps to configure the method.

In the embodiment of the present invention, the network side device sends one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource, so that the network side device can configure PRS for the terminal device and improve communication effectiveness.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic diagram of a network architecture according to an embodiment of the present invention;

FIG. 2 is a method for configuring a positioning reference signal according to an embodiment of the present invention;

3 is a schematic diagram of a PRS resource set provided by an embodiment of the present invention;

4 is a schematic diagram of an NZP-CSI-RS resource set serving as a PRS resource set provided by an embodiment of the present invention;

5 is a schematic diagram of a first PRS resource mapping pattern according to an embodiment of the present invention;

6 is a schematic diagram of a second PRS resource mapping pattern provided by an embodiment of the present invention;

7 is a schematic diagram of another second PRS resource mapping pattern provided by an embodiment of the present invention;

FIG. 8 is a schematic flowchart of another positioning reference signal configuration method according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a network side device according to an embodiment of the present application;

FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of another network side device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1, FIG. 1 is a schematic diagram of a network architecture according to an embodiment of the present invention. As shown in FIG. 1, it includes a user terminal 11 and a base station 12, wherein the user terminal 11 may be a terminal equipment (UE, User Equipment), for example, a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), personal digital assistant (PDA, personal digital assistant), mobile Internet Device (MID, Mobile Internet Device) or wearable device (Wearable Device) and other terminal-side devices, it should be noted that in the embodiments of the present invention, the The specific type of the user terminal 11 is not limited. The above-mentioned base station 12 may be a base station of 5G and later versions (for example: gNB, 5G NR NB), or a base station in other communication systems, or referred to as a Node B. It should be noted that in this embodiment of the present invention, only 5G is used. The base station is taken as an example, but the specific type of the base station 12 is not limited.

It should be noted that, the specific functions of the above-mentioned user terminal 11 and base station 12 will be specifically described through the following multiple embodiments.

FIG. 2 is a schematic flowchart of a method for configuring a positioning reference signal according to an embodiment of the present invention. The method is applied to a network side device, and the method may be as follows.

Step 210: Send one or more PRS resource sets to the terminal device, wherein each PRS resource set includes at least one PRS resource.

The network side device may configure one or more PRS resource sets for the terminal device, and each PRS resource set includes at least one PRS resource. The network side device can implement flexible configuration of the PRS resource mapping pattern by configuring each PRS resource in the one or more PRS resource sets.

The one or more PRS resource sets configured by the network side device may include the following two.

The first type: the network side device directly configures one or more PRS resource sets for the terminal device.

FIG. 3 is a schematic diagram of a PRS resource set provided by an embodiment of the present invention.

As shown in FIG. 3 , the network-side device configures one PRS resource set in one time slot, and the time slot includes 14 (l=0-13) orthogonal frequency division multiplexing (OFDM, Orthogonal Frequency Division Multiplex) symbols . The PRS resource set includes 8 periodic PRS resources, for example, 31 and 32 are respectively two PRS resources mapped on two resource elements at different frequency domain positions in the same OFDM symbol.

In this embodiment of the present invention, before sending one or more PRS resource sets, the method further includes:

Send second target configuration information to the terminal device, where the second target configuration information is used to configure PRS resources in the PRS resource set.

Specifically, the second target configuration information includes at least one of the following:

The resource configuration identifier corresponding to the PRS resource;

Period information and slot offset information of PRS resources;

Resource mapping information of PRS resources;

Power control information for PRS resources;

Scrambling code identification information for generating PRS resources;

Band Width Part (BWP, Band Width Part) information corresponding to the PRS resource;

Quasi-colocation (QCL, Quasi-colocation) information of PRS resources.

Among them: (1) the resource configuration identifier corresponding to the PRS resource, which may also be referred to as the PRS resource ID.

(2) The period information of the PRS resource may indicate the transmission period of the PRS resource; the time slot information of the PRS resource may indicate the time slot offset of the PRS resource.

(3) The resource mapping information of the PRS resource includes at least one of the following: antenna port information, time-frequency location information, frequency domain density, and bandwidth information.

Wherein, the antenna port information represents the antenna port information for sending the PRS resource; the time-frequency location information represents the occupied position of the OFDM symbol and the subcarrier corresponding to the PRS resource; the frequency domain density represents each physical resource block ( The PRS frequency domain density of the Physical Resource Block (PRB); the bandwidth information indicates the bandwidth of the PRS resource and the frequency domain initial PRB index.

In this embodiment of the present invention, the frequency domain density of at least one PRS resource included in each PRS resource set is the same.

That is, in one or more PRS resource sets configured by the network side device for the terminal device, all PRS resources in each PRS resource set are distributed at equal intervals in the frequency domain.

In addition, all PRS resources in one PRS resource set configured by the network side device correspond to the same antenna port and the same transmit beam.

(4) The power control information of the PRS resource includes at least one of the following: the ratio of the energy (EPRE, Energy per Resource Element) of each resource element of the PRS to the synchronization signal block (SSB, Synchronization Signal Block) EPRE, the PRS EPRE and the physical The ratio of downlink shared channel (PDSCH, Physical Downlink Shared Channel) EPRE.

(5) Scrambling code identification information for generating PRS resources, for example, scrambling code ID information for determining an initial value in a PRS pseudo-random sequence.

(6) The BWP information of the PRS resource indicates on which BWP the network side device configures the PRS resource.

(7) The QCL information of the PRS resource includes PRS transmission configuration indicator (TCI, Transmission Configuration Indicator) state information, where the PRS TCI state information is used to indicate the QCL source reference signal of the PRS resource.

In the embodiment of the present invention, according to the period information and time slot offset information of the PRS resources, it is determined that the _PRS resources are transmitted in NPRS consecutive downlink time slots; in the first time slot in the _NPRS consecutive downlink time slots:

为目标参数numerology对应的一个无线帧中包含的时隙数，n_f为无线帧号，n_s为一个无线帧内的时隙号，Δ_PRS为PRS资源的时隙偏移信息，T_PRS为PRS资源的周期信息，mod为取模运算。in,

is the number of time slots contained in a radio frame corresponding to the target parameter numerology, n _f is the radio frame number, n _s is the time slot number in a radio frame, Δ _PRS is the time slot offset information of the PRS resource, and T _PRS is Period information of the PRS resource, mod is the modulo operation.

It should be noted that the second target resource configuration information may not only include the above resource configuration identifier, period information, time slot offset information, resource mapping information, power control information, scrambling code identifier information, BWP information, and QCL information, but also Including other parameter information, which is not specifically limited here.

By sending the second target configuration information to the terminal device, the network side device enables the terminal device to effectively receive one or more PRS resources sent by the network side device according to the second target configuration information after receiving the second target configuration information set.

In this embodiment of the present invention, a manner of sending the second target configuration information to the terminal device includes at least one of the following:

Send the second target configuration information through Radio Resource Control (RRC, Radio Resource Control) signaling;

Send the second target configuration information through medium access control layer (MAC, Medium Access Control) signaling;

The second target configuration information is sent through downlink control information (DCI, Downlink Control Information) signaling.

It should be noted that, in addition to the above three methods for sending the second target configuration information, the second target configuration information may also be specified according to a preset protocol, which is not specifically limited here.

The second type: use the non-zero power channel state information reference signal (NZP-CSI-RS, Non-ZeroPower Channel State Information Reference Symbol) resource set in the prior art as the PRS resource set.

In the embodiment of the present invention, it also includes:

Send first target configuration information to the terminal device, where the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as PRS resources.

For example, the network-side device may configure the 1-port NZP-CSI-RS resource as a PRS resource. By configuring the first target configuration information (for example, prs-info) for one NZP-CSI-RS resource set, and sending the first target configuration information to the terminal device, the terminal device can receive the first target configuration information according to the first target configuration information. One or more NZP-CSI-RS resources in the obtained NZP-CSI-RS resource set corresponding to the first target configuration information are used as PRS resources, and then a subsequent positioning process of determining its own geographic location is performed.

FIG. 4 is a schematic diagram of an NZP-CSI-RS resource set serving as a PRS resource set provided by an embodiment of the present invention.

As shown in FIG. 4 , the network-side device configures one NZP-CSI-RS resource set as a PRS resource set in one time slot, and the time slot includes 14 (1=0-13) OFDM symbols. The NZP-CSI-RS resource set includes 8 periodic NZP-CSI-RS resources. For example, 41 and 42 are two PRS resources mapped on two resource elements in different frequency domain positions in the same OFDM symbol, respectively. NZP-CSI-RS resources.

In this embodiment of the present invention, one or more NZP-CSI-RS resources serving as PRS resources correspond to the same antenna port and the same transmit beam.

In this embodiment of the present invention, a manner of sending the first target configuration information to the terminal device includes at least one of the following:

sending the first target configuration information through RRC signaling;

sending the first target configuration information through MAC signaling;

The first target configuration information is sent through DCI signaling.

It should be noted that, in addition to the above three methods for sending the first target configuration information, the first target configuration information may also be specified according to a preset protocol, which is not specifically limited here.

In the embodiment of the present invention, before sending the NZP-CSI-RS resource set as the PRS resource, the network side device further includes:

Send second target configuration information to the terminal device, where the second target configuration information is used to configure NZP-CSI-RS resources in the NZP-CSI-RS resource set.

Specifically, the second target configuration information includes at least one of the following:

The resource configuration identifier corresponding to the NZP-CSI-RS resource;

Period information and slot offset information of NZP-CSI-RS resources;

Resource mapping information of NZP-CSI-RS resources;

Power control information for NZP-CSI-RS resources;

Scrambling code identification information for generating NZP-CSI-RS resources;

BWP information corresponding to NZP-CSI-RS resources;

QCL information for NZP-CSI-RS resources.

Among them: (1) the resource configuration identifier corresponding to the NZP-CSI-RS resource, which may also be referred to as the NZP-CSI-RS resource ID.

(2) The period information of the NZP-CSI-RS resource may indicate the transmission period of the NZP-CSI-RS resource; the time slot information of the NZP-CSI-RS resource may indicate the time slot offset of the NZP-CSI-RS resource .

(3) The resource mapping information of the NZP-CSI-RS resource includes at least one of the following: antenna port information, time-frequency location information, frequency domain density, and bandwidth information. The antenna port information indicates the antenna port information for transmitting the NZP-CSI-RS resource; the time-frequency location information indicates the occupied position of the OFDM symbol and subcarrier corresponding to the NZP-CSI-RS resource; the frequency domain density indicates each NZP-CSI-RS resource. The frequency-domain density of the NZP-CSI-RS resource of each PRB on the CSI-RS transmission port; the bandwidth information indicates the bandwidth of the NZP-CSI-RS resource and the frequency-domain initial PRB index.

In this embodiment of the present invention, one or more NZP-CSI-RS resources serving as PRS resources have the same frequency domain density.

That is to say, one or more NZP-CSI-RS resources as PRS resources configured by the network side device for the terminal device are distributed at equal intervals in the frequency domain.

In this embodiment of the present invention, one or more NZP-CSI-RS resources configured as PRS resources by the network side device correspond to the same antenna port and the same transmit beam.

(4) The power control information of the NZP-CSI-RS resource includes at least one of the following: a ratio of NZP-CSI-RS EPRE to SSB EPRE, and a ratio of NZP-CSI-RS EPRE to PDSCH EPRE.

(5) Scrambling code identification information for generating NZP-CSI-RS resources, eg, scrambling code ID information for determining an initial value in the NZP-CSI-RS resource sequence.

(6) The BWP information of the NZP-CSI-RS resource indicates on which BWP the network-side device configures the NZP-CSI-RS resource.

(7) The QCL information of the NZP-CSI-RS resource includes NZP-CSI-RS resource TCI status information, and the NZP-CSI-RS resource TCI status information is used to indicate the QCL source reference signal of the NZP-CSI-RS resource.

In addition, before sending the NZP-CSI-RS resource to the terminal device in the prior art, the network side device will also send the configuration information corresponding to the NZP-CSI-RS resource to the terminal device through high-layer signaling (the above corresponds to the NZP-CSI-RS resource). The second target configuration information of the CSI-RS resource), therefore, in the embodiment of the present invention, when the NZP-CSI-RS resource is used as the PRS resource, compared with the prior art, only the amount of sending the first target configuration information is increased. High-layer signaling can effectively reduce the high-layer signaling overhead in the PRS configuration process.

It should be noted that, in this embodiment of the present invention, the RRC signaling, MAC signaling, and DCI signaling for sending the first target configuration information and sending the second target configuration information may be the same or different, which are not specifically limited here. .

In this embodiment of the present invention, sending one or more PRS resource sets includes:

Determine the target PRS resource mapping pattern according to the positioning performance index;

One or more PRS resource sets are sent according to the target PRS resource mapping pattern.

The positioning performance indicators include: positioning accuracy indicators and positioning delay indicators.

In practical applications, in different application scenarios, the positioning requirements of terminal devices are different. Therefore, the network side device can configure the positioning performance index for the terminal device through high-layer signaling according to specific application scenarios, and then determine the target PRS resource mapping pattern matching the positioning performance index according to the positioning performance index, so that the target PRS resource mapping pattern can be determined according to the target PRS The resource mapping pattern sends one or more PRS resource sets to the terminal device, so as to meet the positioning requirements of the terminal device.

In the embodiment of the present invention, the target PRS resource mapping pattern is determined according to the positioning performance index, including at least one of the following:

determining the first PRS resource mapping pattern whose frequency domain density meets the positioning accuracy index as the target PRS resource mapping pattern;

A second PRS resource mapping pattern whose number of occupied OFDM symbols meets the positioning delay index is determined as the target PRS resource mapping pattern.

When the positioning accuracy index is high, select the first PRS resource mapping pattern with good positioning performance, that is, with high frequency domain density, as the target PRS resource mapping pattern for sending the PRS resource set; when the positioning accuracy index is low, select the frequency domain density. Small, that is, the first PRS resource mapping pattern with relatively sparse frequency domain density is used as the target PRS resource mapping pattern for sending the PRS resource set.

FIG. 5 is a schematic diagram of a first PRS resource mapping pattern according to an embodiment of the present invention.

As shown in FIG. 5 , when the positioning accuracy requirement is high, the first PRS resource mapping pattern with a frequency domain density of 3 that meets the positioning accuracy index is selected as the target PRS resource mapping pattern for sending the PRS resource set.

When the positioning delay index is high, that is, the delay in the positioning calculation process is required to be small, and the second PRS resource mapping pattern that occupies less OFDM symbols is selected as the target PRS resource mapping pattern for sending the PRS resource set; when the positioning delay index When it is lower, the second PRS resource mapping pattern that occupies more OFDM symbols is selected as the target PRS resource mapping pattern for sending the PRS resource set.

FIG. 6 is a schematic diagram of a second PRS resource mapping pattern according to an embodiment of the present invention.

As shown in FIG. 6 , when the positioning delay index is relatively high, the second PRS resource mapping pattern that meets the positioning delay index: occupying 3 OFDM symbols is selected as the target PRS resource mapping pattern for sending the PRS resource set, so as to reduce the time extension.

FIG. 7 is a schematic diagram of another second PRS resource mapping pattern provided by an embodiment of the present invention.

As shown in FIG. 7 , when the positioning delay index is very high, the second PRS resource mapping pattern that meets the positioning delay index: occupying one OFDM symbol is selected as the target PRS resource mapping pattern for sending the PRS resource set, so as to reduce the time delay. extension.

In this embodiment of the present invention, within a time slot, the target PRS resource mapping pattern is a diagonal type or an anti-diagonal type.

Still taking the above-mentioned FIG. 5 or FIG. 6 as an example, as shown in FIG. 5 or FIG. 6 , in a time slot, the target PRS resource mapping pattern is a diagonal type or an anti-diagonal type.

That is to say, the PRS resource elements RE on the OFDM symbols occupied by consecutive N PRS resources are distributed diagonally or anti-diagonally.

Wherein, N is not less than a preset value, and the preset value may be reported by the terminal device to the network-side device or configured by the network-side device.

Compared with LTE, the PRS resource mapping pattern needs to avoid the Common Reference Signal (CRS, Common Reference Signal) on a fixed OFDM symbol, and there is no CRS in the NR system. Therefore, the PRS resource in the embodiment of the present invention is The mapping pattern does not need to consider the problem of avoiding CRS.

In addition, in LTE, the PRS resource mapping pattern is distributed on subframes, and the subframe contains 2 time slots, so that the complete PRS resource mapping pattern corresponds to the PRS resources in two adjacent time slots. In the NR system, there is no concept of a subframe. Therefore, the PRS resource mapping pattern in the embodiment of the present invention only corresponds to the PRS resource in one time slot.

It should be noted that the positioning reference signal configuration method involved in the embodiments of the present invention can be applied to other communication systems in which it is not specified how to configure the positioning reference signal in addition to the NR system, which is not specifically limited here.

According to the technical solution described in the embodiment of the present invention, the network side device sends one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource, so that the network side device can configure the PRS for the terminal device and improve the communication effectiveness .

FIG. 8 is a schematic flowchart of another positioning reference signal configuration method according to an embodiment of the present invention. The method is applied to a terminal device, and the method may be as follows.

Step 810: The terminal device receives one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource.

The terminal device may receive one or more PRS resource sets configured by the network side device, and each PRS resource set includes at least one PRS resource. Further, according to the received PRS resources, a subsequent positioning process of determining its own geographic location is performed.

The one or more PRS resource sets received by the terminal device may include the following two types.

The first type: what is received is one or more PRS resource sets directly configured by the network side device for the terminal device.

In the embodiment of the present invention, it also includes:

Second target configuration information is received, where the second target configuration information is used to indicate configuration information corresponding to the PRS resources in the PRS resource set.

Wherein, the second target configuration information includes at least one of the following:

The resource configuration identifier corresponding to the PRS resource;

Period information and slot offset information of PRS resources;

Resource mapping information of PRS resources;

Power control information for PRS resources;

Scrambling code identification information for generating PRS resources;

BWP information corresponding to PRS resources;

QCL information of the PRS resource.

In this embodiment of the present invention, the frequency domain density of at least one PRS resource included in each PRS resource set is the same.

By receiving the second target configuration information sent by the network side device, the terminal device enables the terminal device to effectively receive one or more PRSs sent by the network side device according to the second target configuration information after receiving the second target configuration information Resource set.

In this embodiment of the present invention, the manner of receiving the second target configuration information includes at least one of the following:

receiving the second target configuration information through RRC signaling;

receiving the second target configuration information through MAC signaling;

The second target configuration information is received through DCI signaling.

It should be noted that, in addition to the above three methods for sending the second target configuration information, the second target configuration information may also be specified according to a preset protocol, which is not specifically limited here.

The second type: what is received is the NZP-CSI-RS resource set as the PRS resource set.

In the embodiment of the present invention, the PRS resource set is an NZP-CSI-RS resource set.

In the embodiment of the present invention, it also includes:

Receive first target configuration information, where the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as PRS resources.

For example, the network side device may be configured to use the 1-port NZP-CSI-RS resource as the PRS resource. By configuring the first target configuration information (for example, prs-info) for one NZP-CSI-RS resource set, and sending the first target configuration information to the terminal device, the terminal device can receive the first target configuration information according to the first target configuration information. One or more NZP-CSI-RS resources in the obtained NZP-CSI-RS resource set corresponding to the first target configuration information are used as PRS resources, and a subsequent positioning process of determining its own geographic location is performed.

In the embodiment of the present invention, it also includes:

One or more NZP-CSI-RS resources as PRS resources are received, wherein the one or more NZP-CSI-RS resources as PRS resources correspond to the same port and the same transmit beam.

In this embodiment of the present invention, the manner of receiving the first target configuration information includes at least one of the following:

receiving the first target configuration information through RRC signaling;

receiving the first target configuration information through MAC signaling;

The first target configuration information is received through DCI signaling.

It should be noted that, in addition to the above three methods for sending the first target configuration information, the first target configuration information may also be specified according to a preset protocol, which is not specifically limited here.

In this embodiment of the present invention, the RRC signaling, MAC signaling, and DCI signaling for receiving the first target configuration information and sending the second target configuration information may be the same or different, which are not specifically limited here.

According to the technical solution described in the embodiment of the present invention, the terminal device receives one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource, so that the terminal device can receive the PRS configured by the network side device and improve the communication effectiveness .

FIG. 9 is a schematic structural diagram of a network side device according to an embodiment of the present application. The network side device 900 shown in FIG. 9 includes:

The sending module 901 is configured to send one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource.

Optionally, the PRS resource set is an NZP-CSI-RS resource set.

Optionally, the sending module 901 further includes:

The first sending unit is configured to send first target configuration information, where the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as PRS resources.

Optionally, one or more NZP-CSI-RS resources as PRS resources correspond to the same antenna port and the same transmit beam.

Optionally, the first sending unit is further used for:

Send the first target configuration information through RRC signaling;

Send the first target configuration information through MAC signaling;

The first target configuration information is sent through DCI signaling.

Optionally, the sending module 901 further includes:

The second sending unit is configured to send second target configuration information, where the second target configuration information is used to configure PRS resources in the PRS resource set.

Optionally, the second target configuration information includes at least one of the following:

The resource configuration identifier corresponding to the PRS resource;

Period information and slot offset information of PRS resources;

Resource mapping information of PRS resources;

Power control information for PRS resources;

Scrambling code identification information for generating PRS resources;

BWP information corresponding to PRS resources;

QCL information of the PRS resource.

Optionally, the resource mapping information includes at least one of the following: antenna port information, time-frequency location information, frequency domain density, and bandwidth information.

Optionally, the frequency domain density of at least one PRS resource included in each PRS resource set is the same.

Optionally, the network side device 900 further includes:

a determining module, configured to determine that the PRS resources are to be transmitted in N _PRS consecutive downlink time slots according to the period information and time slot offset information of the PRS resources;

In the first slot of _NPRS consecutive downlink slots:

为目标参数numerology对应的一个无线帧中包含的时隙数，n_f为无线帧号，n_s为一个无线帧内的时隙号，Δ_PRS为PRS资源的时隙偏移信息，T_PRS为PRS资源的周期信息，mod为取模运算。in,

is the number of time slots contained in a radio frame corresponding to the target parameter numerology, n _f is the radio frame number, n _s is the time slot number in a radio frame, Δ _PRS is the time slot offset information of the PRS resource, and T _PRS is Period information of the PRS resource, mod is the modulo operation.

Optionally, the second sending unit is further used for:

Send the second target configuration information through RRC signaling;

Send the second target configuration information through MAC signaling;

The second target configuration information is sent through DCI signaling.

Optionally, the sending module 901 further includes:

a determining unit, configured to determine the target PRS resource mapping pattern according to the positioning performance index;

The third sending unit is configured to send one or more PRS resource sets according to the target PRS resource mapping pattern.

Optionally, the positioning performance indicators include: positioning accuracy indicators and positioning delay indicators.

Optionally, the determining unit is further used to:

determining the first PRS resource mapping pattern whose frequency domain density meets the positioning accuracy index as the target PRS resource mapping pattern;

The second PRS resource mapping pattern whose number of occupied OFDM symbols meets the positioning delay index is determined as the target PRS resource mapping pattern.

Optionally, within one time slot, the target PRS resource mapping pattern is diagonal or anti-diagonal.

The network-side device 900 provided in this embodiment of the present invention can implement each process implemented by the network-side device in the method embodiment of FIG. 2 , which is not repeated here to avoid repetition.

FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. The terminal device 1000 shown in FIG. 10 includes:

The receiving module 1001 is configured to receive one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource.

Optionally, the PRS resource set is an NZP-CSI-RS resource set.

Optionally, the receiving module 1001 further includes:

The first receiving unit is configured to receive first target configuration information, where the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as PRS resources.

Optionally, the receiving module 1001 further includes:

a second receiving unit, configured to receive the one or more NZP-CSI-RS resources as PRS resources, wherein the one or more NZP-CSI-RS resources as PRS resources correspond to the same antenna port and the same transmit beam.

Optionally, the first receiving unit is further used for:

receiving the first target configuration information through RRC signaling;

receiving the first target configuration information through MAC signaling;

The first target configuration information is received through DCI signaling.

Optionally, the receiving module 1000 further includes:

The third receiving unit is configured to receive second target configuration information, where the second target configuration information is used to indicate configuration information corresponding to the PRS resources in the PRS resource set.

Optionally, the second target configuration information includes at least one of the following:

The resource configuration identifier corresponding to the PRS resource;

Period information and slot offset information of PRS resources;

Resource mapping information of PRS resources;

Power control information for PRS resources;

Scrambling code identification information for generating PRS resources;

BWP information corresponding to PRS resources;

QCL information of the PRS resource.

Optionally, the resource mapping information includes at least one of the following:

Port information, time-frequency location information, frequency domain density, and bandwidth information.

Optionally, the frequency domain density of at least one PRS resource included in each PRS resource set is the same.

Optionally, the third receiving unit is further used for:

receiving the second target configuration information through RRC signaling;

receiving the second target configuration information through MAC signaling;

The second target configuration information is received through DCI signaling.

The terminal device 1000 provided in this embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of FIG. 8 , and to avoid repetition, details are not described here.

FIG. 11 is a schematic structural diagram of another network side device according to an embodiment of the present invention. The network-side device 1100 shown in FIG. 11 can implement the details of the method embodiment in FIG. 2 and achieve the same effect. As shown in Figure 11, the network side device 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104 and a bus interface, wherein:

In this embodiment of the present invention, the network-side device 1100 further includes: a computer program stored on the memory 1103 and executable on the processor 1101, and the computer program is executed by the processor 1101 to implement the following steps:

Sending one or more PRS resource sets, wherein each PRS resource set includes at least one PRS resource.

In FIG. 11 , the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by processor 1101 and various circuits of memory represented by memory 1103 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1102 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium. For different user equipments, the user interface 1104 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 may store data used by the processor 1101 in performing operations.

The network-side device 1100 can implement each process implemented by the network-side device in the foregoing method embodiment of FIG. 2 , which is not repeated here to avoid repetition.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the method embodiment of FIG. 2 is implemented, and can achieve the same The technical effect, in order to avoid repetition, will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and the like.

FIG. 12 is a schematic structural diagram of another terminal device according to an embodiment of the present invention. The terminal device 1200 shown in FIG. 12 includes: at least one processor 1201 , memory 1202 , at least one network interface 1204 and user interface 1203 . The various components in terminal device 1200 are coupled together by bus system 1205 . It is understood that the bus system 1205 is used to implement the connection communication between these components. In addition to the data bus, the bus system 1205 also includes a power bus, a control bus, and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 1205 in FIG. 12 .

Among them, the user interface 1203 may include a display, a keyboard or a pointing device (eg, a mouse, a trackball, a touch pad or a touch screen, etc.).

It can be understood that the memory 1202 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM, Read-Only Memory), a programmable read-only memory (PROM, Programmable ROM), an erasable programmable read-only memory (EPROM, Erasable PROM), an electrically programmable read-only memory (PROM, Programmable ROM) Erase programmable read-only memory (EEPROM, ElectricallyEPROM) or flash memory. The volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache memory. By way of example and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM) DRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate SDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM, Enhanced SDRAM), Synchronous Link Dynamic Random Access Memory (SLDRAM, Synch link DRAM) ) and direct memory bus random access memory (DRRAM, Direct Rambus RAM). The memory 1202 of the systems and methods described in embodiments of the present invention is intended to include, but not be limited to, these and any other suitable types of memory.

In some embodiments, memory 1202 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set of them: an operating system 12021 and an application program 12022.

The operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 12022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. The program for implementing the method of the embodiment of the present invention may be included in the application program 9022 .

In this embodiment of the present invention, the terminal device 1200 further includes: a computer program that is stored in the memory 1202 and that can run on the processor 1201. When the computer program is executed by the processor 1201, the following steps are implemented:

One or more PRS resource sets are received, wherein each PRS resource set includes at least one PRS resource.

The methods disclosed in the above embodiments of the present invention may be applied to the processor 1201 or implemented by the processor 1201 . The processor 1201 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the processor 1201 or an instruction in the form of software. The above-mentioned processor 1201 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), an application specific integrated circuit (ASIC, Application Specific Integrated Circuit), an off-the-shelf programmable gate array (FPGA, Field Programmable Gate Array) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other computer-readable storage media that are mature in the art. The computer-readable storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202, and completes the steps of the above method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 1201, each step of the method embodiment as shown in FIG. 8 is implemented.

It can be understood that the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuits), digital signal processors (DSP, Digital Signal Processing), digital signal processing devices (DSPD, DSP Device), programmable logic Devices (PLD, Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present invention or a combination thereof.

For software implementation, the techniques described in the embodiments of the present invention may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present invention. Software codes may be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

The terminal device 1200 can implement each process implemented by the terminal device in the foregoing method embodiment of FIG. 8 , and to avoid repetition, details are not described here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the method embodiment of FIG. 8 is implemented, and can achieve the same The technical effect, in order to avoid repetition, will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and the like.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the spirit of the present invention and the scope protected by the claims, many forms can be made, which all belong to the protection of the present invention.

Claims (29)

1. A positioning reference signal configuration method is applied to network side equipment, and is characterized in that the method comprises the following steps:

and sending one or more Positioning Reference Signal (PRS) resource sets, wherein each PRS resource set comprises at least one PRS resource, and the non-zero power channel state information reference signal (NZP-CSI-RS) resource set is used as the PRS resource set.

2. The method of claim 1, wherein the method further comprises:

transmitting first target configuration information, wherein the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as the PRS resource.

3. The method of claim 2, wherein the one or more NZP-CSI-RS resources as the PRS resources correspond to a same antenna port and a same transmit beam.

4. The method of claim 2, wherein the manner of sending the first target configuration information comprises at least one of:

transmitting the first target configuration information through Radio Resource Control (RRC) signaling;

sending the first target configuration information through Media Access Control (MAC) signaling;

and sending the first target configuration information through Downlink Control Information (DCI) signaling.

5. The method of claim 1, wherein prior to transmitting one or more sets of PRS resources, the method further comprises:

transmitting second target configuration information, wherein the second target configuration information is used for configuring the PRS resources in the PRS resource set.

6. The method of claim 5, wherein the second target configuration information comprises at least one of:

a resource configuration identifier corresponding to the PRS resource;

period information and slot offset information of the PRS resource;

resource mapping information of the PRS resource;

power control information of the PRS resource;

scrambling code identification information used for generating the PRS resources;

BWP information of a part of bandwidth corresponding to the PRS resource;

quasi co-located QCL information of the PRS resource.

7. The method of claim 6, wherein the resource mapping information comprises at least one of: antenna port information, time-frequency position information, frequency domain density and bandwidth information.

8. The method of claim 7, wherein the frequency-domain density of the at least one PRS resource included in each set of PRS resources is the same.

9. The method of claim 6, wherein the method further comprises:

determining the PRS resource is in N according to the period information and the time slot offset information of the PRS resource_PRSTransmitting in continuous downlink time slots;

in said N_PRSIn a first one of the consecutive downlink time slots:

wherein,

number of slots, n, included in a radio frame corresponding to a target parameter numerology_fIs the radio frame number, n_sIs the number of time slots, Δ, in a radio frame_PRSTime slot offset information, T, for the PRS resource_PRSMod is the modulo operation for the period information of the PRS resource.

10. The method of claim 5, wherein the manner of sending the second target configuration information comprises at least one of:

transmitting the second target configuration information through RRC signaling;

sending the second target configuration information through MAC signaling;

and sending the second target configuration information through DCI signaling.

11. The method of claim 1, wherein transmitting one or more sets of PRS resources comprises:

determining a target PRS resource mapping pattern according to the positioning performance index;

transmitting the one or more PRS resource sets in accordance with the target PRS resource mapping pattern.

12. The method of claim 11, wherein the locating performance indicators comprises: positioning accuracy index and positioning delay index.

13. The method of claim 12, wherein determining the target PRS resource mapping pattern based on the positioning performance indicator comprises at least one of:

determining a first PRS resource mapping pattern with a frequency domain density meeting the positioning accuracy index as the target PRS resource mapping pattern;

and determining a second PRS resource mapping pattern, the number of which occupies the OFDM symbols of the OFDM conforms to the positioning delay index, as the target PRS resource mapping pattern.

14. The method of claim 11, wherein the target PRS resource mapping pattern is diagonal or anti-diagonal in one slot.

15. A positioning reference signal configuration method is applied to terminal equipment, and is characterized by comprising the following steps:

receiving one or more PRS resource sets, wherein each PRS resource set comprises at least one PRS resource, and taking an NZP-CSI-RS resource set as the PRS resource set.

16. The method of claim 15, wherein the method further comprises:

receiving first target configuration information, wherein the first target configuration information is used to indicate one or more NZP-CSI-RS resources in the NZP-CSI-RS resource set as the PRS resource.

17. The method of claim 16, wherein the method further comprises:

receiving the one or more NZP-CSI-RS resources as the PRS resources, wherein the one or more NZP-CSI-RS resources as the PRS resources correspond to a same antenna port and a same transmission beam.

18. The method of claim 16, wherein the manner of receiving the first target configuration information comprises at least one of:

receiving the first target configuration information through RRC signaling;

receiving the first target configuration information through MAC signaling;

receiving the first target configuration information through DCI signaling.

19. The method of claim 15, wherein the method further comprises:

receiving second target configuration information, wherein the second target configuration information is used for indicating configuration information corresponding to the PRS resources in the PRS resource set.

20. The method of claim 19, wherein the second target configuration information comprises at least one of:

a resource configuration identifier corresponding to the PRS resource;

period information and slot offset information of the PRS resource;

resource mapping information of the PRS resource;

power control information of the PRS resource;

scrambling code identification information used for generating the PRS resources;

BWP information corresponding to the PRS resource;

QCL information of the PRS resources.

21. The method of claim 20, wherein the resource mapping information comprises at least one of:

port information, time-frequency position information, frequency domain density, and bandwidth information.

22. The method of claim 21, wherein the frequency-domain density of the at least one PRS resource included in each set of PRS resources is the same.

23. The method of claim 19, wherein the manner of receiving the second target configuration information comprises at least one of:

receiving the second target configuration information through RRC signaling;

receiving the second target configuration information through MAC signaling;

receiving the second target configuration information through DCI signaling.

24. A network-side device, comprising:

a sending module, configured to send one or more PRS resource sets, where each PRS resource set includes at least one PRS resource and an NZP-CSI-RS resource set is used as a PRS resource set.

25. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the positioning reference signal configuration method according to any of claims 1 to 14.

26. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the positioning reference signal configuration method according to any one of claims 1 to 14.

27. A terminal device, comprising:

a receiving module, configured to receive one or more PRS resource sets, where each PRS resource set includes at least one PRS resource and an NZP-CSI-RS resource set is used as a PRS resource set.

28. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the positioning reference signal configuration method according to any of claims 15 to 23.

29. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the positioning reference signal configuration method according to any one of claims 15 to 23.

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