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WO2018143846A1 - Gestion de l'avance de synchronisation pour des liaisons de paires de faisceaux séparées - Google Patents

Gestion de l'avance de synchronisation pour des liaisons de paires de faisceaux séparées Download PDF

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Publication number
WO2018143846A1
WO2018143846A1 PCT/SE2017/050570 SE2017050570W WO2018143846A1 WO 2018143846 A1 WO2018143846 A1 WO 2018143846A1 SE 2017050570 W SE2017050570 W SE 2017050570W WO 2018143846 A1 WO2018143846 A1 WO 2018143846A1
Authority
WO
WIPO (PCT)
Prior art keywords
tav
bpl
timing
trp
network
Prior art date
Application number
PCT/SE2017/050570
Other languages
English (en)
Inventor
Qiang Zhang
Niclas Wiberg
Håkan ANDERSSON
Johan FURUSKOG
Mattias Frenne
John SKÖRDEMAN
Tomas Sundin
Johan KÅREDAL
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Publication of WO2018143846A1 publication Critical patent/WO2018143846A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • Beamforming can be applied both in a transmitter and a receiver.
  • Radio-link supervision often involves a receiver checking the presence and/or quality of a sync signal or a reference signal. It can also involve monitoring the number of retransmissions in a retransmission protocol, and monitoring the time it takes to receive a response to an earlier transmitted request message. In case any of these checks indicate a severe problem, the device often declares a radio-link failure and initiates some action. In case of a network node having lost communication with a UE, the action can involve releasing some or all network resources related to that UE.
  • networks schedule and transmit UE- specific reference signals that, among other things, can be used for beam searching, beam tracking, and beam refinement.
  • UE-specific reference signals BRRS
  • An example of a UE- specific reference signal is the channel-state information reference signal (CSI-RS). This is a reference signal scheduled by the network for one (or possibly, several) specific UE (or UEs) with the intention of providing measurement opportunities in the UE such that more detailed channel knowledge may be obtained and reported back to the network.
  • CSI-RS channel-state information reference signal
  • networks may configure UEs to periodically transmit uplink
  • Tracking a BPL implies beam tracking and/or refinement at the network as well as the UE.
  • the more persistent BRS could enable tracking of the DL TX beam and, more slowly, of the DL RX beam.
  • BRRS e.g., CSI-RS
  • the BRS may then suffice to track a BPL and no UL transmissions are needed. In this case, the BPL is the same for UL and DL.
  • the BPL tracking requires UL transmissions (e.g., SRSs) to maintain the BPL for the UL.
  • a method performed by a UE for separate timing-advance handling for separate beam-pair links includes the UE storing a first UE timing-advance value (TAV) for use with a first UL BPL.
  • the method also includes the UE storing a second UE TAV for use with a second UL BPL.
  • the second UE TAV is distinct from the first UE TAV and the second UL BPL is distinct from the first UL BPL.
  • sending to the UE the first TAV for adjusting the first UE- stored TAV associated with the first UL BPL comprises the TRP sending to the UE a timing- advance, TA, command comprising the first TAV and further comprising information indicating that the first TAV is for use with the first UL BPL.
  • FIG. 4 is a flow chart illustrating a process according to one embodiment.
  • FIG. 8 is a diagram showing functional modules of a TRP according to some embodiments.
  • ⁇ T be the difference between T m and T N2 .
  • BPL with index n N 2 and so forth.
  • UE 101 has two monitored BPLs (i.e., a first BPL (BPLl) and a second BPL (BPL2))
  • BPL1 first BPL
  • TAV2 second BPL
  • UE 101 will store a first TAV (TAV1) that is associated with BPLl and will store another TAV (TAV2) that is associated with BPL2; and, when UE 101 receives a TA command with a timing-adjustment (relative or absolute) for BPLl, UE 101 will adjust TAV1 based on the timing-adjustment for BPLl, and, likewise, when UE 101 receives a timing-adjustment (relative or absolute) for BPL2, UE 101 will adjust TAV2 based on the timing-adjustment for BPL2.
  • TA command for all active BPLs with a timing-advance value equal to m (T m ,T N2 ) , and the UE applies this timing-advance adjustment to all active BPLs.
  • the process may further include the UE receiving a second network TAV (step 210); and the UE adjusting the stored second UE TAV based on the second network TAV, but not adjusting the stored first UE TAV based on the second network TAV (step 212). In this way, the stored UE TAVs are separately handled.
  • receiving the first network TAV comprises receiving a timing-advance (TA) command comprising the first network TAV and further comprising information indicating that the first network TAV is for use with the first UL BPL.
  • TA timing-advance

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention introduit des mesures de rythme de liaison montante de liaisons de paires de faisceaux (BPL) et des ajustements de rythme. Autrement dit, dans certains modes de réalisation, une gestion séparée de l'avance de synchronisation pour des BPL séparées est introduite de telle façon que chaque BPL soit exploitée en utilisant une avance de synchronisation qui correspond aux conditions et aux capacités de transmission de l'UE. Par exemple, dans certains modes de réalisation, pour chaque BPL, l'UE stocke une valeur d'avance de synchronisation (TAV) distincte de liaison montante (UL). Ainsi, dans de tels modes de réalisation, si, par exemple, l'UE possède deux BPL sous surveillance (p. ex. une BPL active et une BPL non active, ou deux BPL actives), l'UE stocke deux TAV distinctes, une TAV pour la première BPL et une TAV séparée pour la deuxième BPL. De plus, dans certains modes de réalisation, dans des scénarios où un UE ne prend en charge qu'une seule fenêtre de synchronisation de FFT inverse UL, toutes les BPL actives pour l'UE présentent la même TAV UL.
PCT/SE2017/050570 2017-01-31 2017-05-30 Gestion de l'avance de synchronisation pour des liaisons de paires de faisceaux séparées WO2018143846A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762452607P 2017-01-31 2017-01-31
US62/452,607 2017-01-31

Publications (1)

Publication Number Publication Date
WO2018143846A1 true WO2018143846A1 (fr) 2018-08-09

Family

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Family Applications (1)

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PCT/SE2017/050570 WO2018143846A1 (fr) 2017-01-31 2017-05-30 Gestion de l'avance de synchronisation pour des liaisons de paires de faisceaux séparées

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WO (1) WO2018143846A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11038727B2 (en) 2018-11-08 2021-06-15 Qualcomm Incorporated User equipment receiver processing for multi-transmit-receive-point communication
CN113364498A (zh) * 2020-03-06 2021-09-07 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
WO2021175276A1 (fr) * 2020-03-06 2021-09-10 上海朗帛通信技术有限公司 Procédé et dispositif utilisés dans un nœud de communication sans fil
US11277192B2 (en) * 2018-11-01 2022-03-15 Qualcomm Incorporated Uplink timing compensation
US20220377689A1 (en) * 2021-05-18 2022-11-24 Qualcomm Incorporated Timing advance adjustments in a full-duplex multi-transmit-receive point configuration
WO2024060225A1 (fr) * 2022-09-23 2024-03-28 Apple Inc. Systèmes, procédés et appareils pour permettre de multiples avances temporelles pour de multiples points de réception de transmission dans une communication sans fil

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130301619A1 (en) * 2012-05-11 2013-11-14 Samsung Electronics Co., Ltd Methods and apparatus for uplink timing alignment in system with large number of antennas
WO2014011004A2 (fr) * 2012-07-13 2014-01-16 Samsung Electronics Co., Ltd. Procédés et appareil d'émission de signaux de référence de sondage de liaison montante dans un système de communication avec un grand nombre d'antennes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130301619A1 (en) * 2012-05-11 2013-11-14 Samsung Electronics Co., Ltd Methods and apparatus for uplink timing alignment in system with large number of antennas
WO2014011004A2 (fr) * 2012-07-13 2014-01-16 Samsung Electronics Co., Ltd. Procédés et appareil d'émission de signaux de référence de sondage de liaison montante dans un système de communication avec un grand nombre d'antennes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11277192B2 (en) * 2018-11-01 2022-03-15 Qualcomm Incorporated Uplink timing compensation
US11038727B2 (en) 2018-11-08 2021-06-15 Qualcomm Incorporated User equipment receiver processing for multi-transmit-receive-point communication
CN113364498A (zh) * 2020-03-06 2021-09-07 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
WO2021175276A1 (fr) * 2020-03-06 2021-09-10 上海朗帛通信技术有限公司 Procédé et dispositif utilisés dans un nœud de communication sans fil
CN113364498B (zh) * 2020-03-06 2022-10-28 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
US20220377689A1 (en) * 2021-05-18 2022-11-24 Qualcomm Incorporated Timing advance adjustments in a full-duplex multi-transmit-receive point configuration
US11716699B2 (en) * 2021-05-18 2023-08-01 Qualcomm Incorporated Timing advance adjustments in a full-duplex multi-transmit-receive point configuration
WO2024060225A1 (fr) * 2022-09-23 2024-03-28 Apple Inc. Systèmes, procédés et appareils pour permettre de multiples avances temporelles pour de multiples points de réception de transmission dans une communication sans fil

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