WO2021169848A1 - Balayage de faisceau de signaux de référence de sondage (srs) dans des scénarios à multiples points de réception de transmission (trp) - Google Patents

Balayage de faisceau de signaux de référence de sondage (srs) dans des scénarios à multiples points de réception de transmission (trp) Download PDF

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Publication number
WO2021169848A1
WO2021169848A1 PCT/CN2021/076845 CN2021076845W WO2021169848A1 WO 2021169848 A1 WO2021169848 A1 WO 2021169848A1 CN 2021076845 W CN2021076845 W CN 2021076845W WO 2021169848 A1 WO2021169848 A1 WO 2021169848A1
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WO
WIPO (PCT)
Prior art keywords
beams
srs
rss
srss
configuration
Prior art date
Application number
PCT/CN2021/076845
Other languages
English (en)
Inventor
Min Huang
Jing Dai
Qiaoyu Li
Original Assignee
Qualcomm Incorporated
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 Qualcomm Incorporated filed Critical Qualcomm Incorporated
Publication of WO2021169848A1 publication Critical patent/WO2021169848A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • 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
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • 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

Definitions

  • a transmit processor 464 may receive and process data (e.g., for the physical uplink shared channel (PUSCH) ) from a data source 462 and control information (e.g., for the physical uplink control channel (PUCCH) from the controller/processor 480.
  • the transmit processor 464 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) .
  • the symbols from the transmit processor 464 may be precoded by a TX MIMO processor 466 if applicable, further processed by the demodulators in transceivers 454a through 454r (e.g., for SC-FDM, etc. ) , and transmitted to the base station 110.
  • UL signals from the UE 120 may be received by the antennas 434, processed by the modulators 432, detected by a MIMO detector 436 if applicable, and further processed by a receive processor 438 to obtain decoded data and control information sent by the UE 120.
  • the receive processor 438 may provide the decoded data to a data sink 439 and the decoded control information to the controller/processor 440.
  • a CORESET is a set of time and frequency domain resources.
  • the CORESET may be configured for conveying PDCCH within system bandwidth.
  • a UE may determine a CORESET and monitor the CORESET for control channels.
  • a UE may identify an initial CORESET (CORESET #0) configuration from a field (e.g., pdcchConfigSIB1) in a master information block (MIB) .
  • This initial CORESET may then be used to configure the UE (e.g., with other CORESETs and/or bandwidth parts (BWPs) via dedicated (UE-specific) signaling.
  • QCL Quasi Co-Location
  • TCI Transmission Configuration Indicator
  • the UE may be expected to transmit an SRS along the beam that is used to receive SSBs or CSI-RSs in the corresponding SSB resource or CSI-RS resource. If an SRS resource is contained in the spatialRelationInfo, the UE may be expected to transmit SRS along the beam that is used to transmit an SRS in the corresponding SRS resource.
  • SSB synchronization signal block
  • CSI-RS channel state information reference signal
  • the UE performs a beam sweep of SRSs using the second plurality of UL beams.
  • the gNB may select an UL beam based on the beam swept SRSs. For example, the gNB may select an UL beam associated with the received SRS with the highest channel gain. The gNB may then indicate this UL beam, for example, in a DCI for an UL grant. The UE may then use the indicated UL beam for the UL transmission scheduled by the grant.
  • correlation coefficients may be between the UE’s determined SRS beams and the SRS beams corresponding to the transmission of the indicated UL RSs (e.g., SRS beams determined based on the RSs identified by the non-target TRPs and further indicated to the UE by the network entity) .
  • the weight vector of a first SRS beam is:
  • ⁇ is the configured correlation coefficient threshold. It may be noted that the less than operator in the equation above may also be a less than or equal to operator or some other similar expression.
  • the processing system 1702 includes a processor 1704 coupled to a computer-readable medium/memory 1712 via a bus 1706.
  • the computer-readable medium/memory 1712 is configured to store instructions (e.g., computer-executable code) that when executed by the processor 1704, cause the processor 1704 to perform the operations 1200 illustrated in FIG. 12, or other operations for performing the various techniques discussed herein for beam management.
  • Aspect 7 The method of any of Aspects 1-6, wherein the one or more RSs indicated in the SRS configuration comprise at least one of: synchronization signal blocks (SSBs) or channel state information reference signals (CSI-RS) .
  • SSBs synchronization signal blocks
  • CSI-RS channel state information reference signals
  • Aspect 26 The method of Aspect 25, wherein the second plurality of UL beams are selected based on quantized values of offsets between the first plurality of UL beams and the second plurality of UL beams.
  • modules and/or other appropriate means for performing the methods and techniques described herein can be downloaded and/or otherwise obtained by a user terminal and/or base station as applicable.
  • a user terminal and/or base station can be coupled to a server to facilitate the transfer of means for performing the methods described herein.
  • various methods described herein can be provided via storage means (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc. ) , such that a user terminal and/or base station can obtain the various methods upon coupling or providing the storage means to the device.
  • storage means e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.
  • CD compact disc
  • floppy disk etc.
  • any other suitable technique for providing the methods and techniques described herein to a device can be utilized.

Abstract

Certains aspects de l'invention concernent des communications sans fil et, en particulier, des techniques pour une gestion de faisceau dans des scénarios impliquant de multiples points de réception de transmission. Un procédé qui peut être mis en œuvre par un équipement utilisateur (UE) consiste à : recevoir une configuration de signaux de référence de sondage (SRS) indiquant un ensemble de ressources de SRS ainsi qu'un ou plusieurs signaux de référence (RS) ; déterminer une première pluralité de faisceaux de liaison montante (UL) d'après le(s) RS ; déterminer une seconde pluralité de faisceaux UL pour la transmission de SRS dans différentes directions d'après les corrélations entre la seconde pluralité de faisceaux et la première pluralité de faisceaux ; et effectuer un balayage de faisceau des SRS à l'aide de la seconde pluralité de faisceaux UL.
PCT/CN2021/076845 2020-02-28 2021-02-19 Balayage de faisceau de signaux de référence de sondage (srs) dans des scénarios à multiples points de réception de transmission (trp) WO2021169848A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNPCT/CN2020/077216 2020-02-28
PCT/CN2020/077216 WO2021168803A1 (fr) 2020-02-28 2020-02-28 Balayage de faisceau srs dans de multiples scénarios de point de réception de transmission

Publications (1)

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WO2021169848A1 true WO2021169848A1 (fr) 2021-09-02

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PCT/CN2020/077216 WO2021168803A1 (fr) 2020-02-28 2020-02-28 Balayage de faisceau srs dans de multiples scénarios de point de réception de transmission
PCT/CN2021/076845 WO2021169848A1 (fr) 2020-02-28 2021-02-19 Balayage de faisceau de signaux de référence de sondage (srs) dans des scénarios à multiples points de réception de transmission (trp)

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Cited By (3)

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CN115426015A (zh) * 2022-07-14 2022-12-02 中信科移动通信技术股份有限公司 一种波束管理方法及系统
CN115550948A (zh) * 2022-11-25 2022-12-30 北京九天微星科技发展有限公司 一种上行探测参考信号传输方法及设备
WO2023051529A1 (fr) * 2021-09-29 2023-04-06 维沃移动通信有限公司 Procédé et appareil de traitement de signal de référence, terminal et support

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WO2018141204A1 (fr) * 2017-02-03 2018-08-09 Huawei Technologies Co., Ltd. Attribution de ressources srs assistée par un équipement utilisateur
CN108736944A (zh) * 2017-04-19 2018-11-02 上海朗帛通信技术有限公司 一种基站、用户设备中的用于多天线传输的方法和装置
WO2020028394A1 (fr) * 2018-08-02 2020-02-06 Qualcomm Incorporated Transmissions de signaux de référence de sondage appariées dans une opération de point de réception/multi-transmission
CN110769502A (zh) * 2018-07-25 2020-02-07 维沃移动通信有限公司 用于多波束发送上行信道的方法、终端设备和网络侧设备
WO2020037207A1 (fr) * 2018-08-17 2020-02-20 Idac Holdings, Inc. Gestion de faisceau pour multi-trp

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CN110430584B (zh) * 2019-08-06 2020-10-23 北京邮电大学 一种毫米波网络中非活跃用户的上行多波束初始接入方法

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WO2018141204A1 (fr) * 2017-02-03 2018-08-09 Huawei Technologies Co., Ltd. Attribution de ressources srs assistée par un équipement utilisateur
CN108736944A (zh) * 2017-04-19 2018-11-02 上海朗帛通信技术有限公司 一种基站、用户设备中的用于多天线传输的方法和装置
CN110769502A (zh) * 2018-07-25 2020-02-07 维沃移动通信有限公司 用于多波束发送上行信道的方法、终端设备和网络侧设备
WO2020028394A1 (fr) * 2018-08-02 2020-02-06 Qualcomm Incorporated Transmissions de signaux de référence de sondage appariées dans une opération de point de réception/multi-transmission
WO2020037207A1 (fr) * 2018-08-17 2020-02-20 Idac Holdings, Inc. Gestion de faisceau pour multi-trp

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023051529A1 (fr) * 2021-09-29 2023-04-06 维沃移动通信有限公司 Procédé et appareil de traitement de signal de référence, terminal et support
CN115426015A (zh) * 2022-07-14 2022-12-02 中信科移动通信技术股份有限公司 一种波束管理方法及系统
CN115426015B (zh) * 2022-07-14 2023-12-08 中信科移动通信技术股份有限公司 一种波束管理方法及系统
CN115550948A (zh) * 2022-11-25 2022-12-30 北京九天微星科技发展有限公司 一种上行探测参考信号传输方法及设备
CN115550948B (zh) * 2022-11-25 2023-08-18 北京九天微星科技发展有限公司 一种上行探测参考信号传输方法及设备

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