WO2020164063A1 - Groupement d'équipements d'utilisateur pour configuration de signal de référence d'interférence de liaison croisée - Google Patents

Groupement d'équipements d'utilisateur pour configuration de signal de référence d'interférence de liaison croisée Download PDF

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Publication number
WO2020164063A1
WO2020164063A1 PCT/CN2019/075105 CN2019075105W WO2020164063A1 WO 2020164063 A1 WO2020164063 A1 WO 2020164063A1 CN 2019075105 W CN2019075105 W CN 2019075105W WO 2020164063 A1 WO2020164063 A1 WO 2020164063A1
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WIPO (PCT)
Prior art keywords
cli
group
configuration
ues
measurement
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PCT/CN2019/075105
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English (en)
Inventor
Yuwei REN
Huilin Xu
Alexandros MANOLAKOS
Yiqing Cao
Peter Gaal
Jay Kumar Sundararajan
Tingfang Ji
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Qualcomm Incorporated
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Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2019/075105 priority Critical patent/WO2020164063A1/fr
Publication of WO2020164063A1 publication Critical patent/WO2020164063A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/345—Interference values
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic

Definitions

  • aspects of the present disclosure generally relate to wireless communication, and more particularly to techniques and apparatuses for user equipment grouping for cross-link interference reference signal (CLI-RS) configuration.
  • CLI-RS cross-link interference reference signal
  • New radio which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • a method of wireless communication may include transmitting, to a base station, information relating to a geographic location of the UE; receiving a cross-link interference reference signal (CLI-RS) configuration based at least in part on transmitting the information relating to the geographic location; and transmitting or measuring one or more CLI-RSs based at least in part on the CLI-RS configuration.
  • CLI-RS cross-link interference reference signal
  • a method of wireless communication may include receiving information relating to a geographic location of a UE; assigning the UE to a UE group, that corresponds to a CLI-RS configuration, based at least in part on the information relating to the geographic location; and transmitting the CLI-RS configuration to the UE.
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having association with the femto cell (e.g., UEs in a closed subscriber group (CSG) ) .
  • a BS for a macro cell may be referred to as a macro BS.
  • Transmit processor 220 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS) ) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS) ) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
  • TX transmit
  • MIMO multiple-input multiple-output
  • Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
  • a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, and/or the like) , and transmitted to base station 110.
  • modulators 254a through 254r e.g., for DFT-s-OFDM, CP-OFDM, and/or the like
  • Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with UE grouping for CLI-RS configuration, as described in more detail elsewhere herein.
  • controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 800 of Fig. 8, process 900 of Fig. 9, and/or other processes as described herein.
  • Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively.
  • a scheduler 246 may schedule UEs for data transmission on the downlink and/or uplink.
  • Cross-link interference may occur between two UEs 120 when uplink information transmitted by a first UE 120 in a first cell, referred to as an aggressor UE, collides with downlink information transmitted to a second UE 120 in a second cell, referred to as a victim UE.
  • CLI may occur, for example, when different cells (e.g., adjacent cells or cells in close proximity to one another) use different uplink-downlink (UL-DL) time division duplex (TDD) configurations.
  • UL-DL uplink-downlink
  • TDD time division duplex
  • CLI may occur in the symbol (s) that are reserved for downlink communications in one cell and that are reserved for uplink communications in the other cell.
  • UEs 120 in a first cell may be configured with a first UL-DL TDD configuration in which symbols 8 and 9 in a slot are reserved for uplink communications
  • UEs 120 in a second cell may be configured with a second UL-DL TDD configuration in which symbols 8 and 9 are reserved for downlink communications.
  • first UEs 120 in the first cell transmit uplink communications that cause the CLI
  • the first UEs 120 may be referred to as aggressor UEs and the first cell may be referred to as an aggressor cell.
  • a base station 110 of the first cell may be referred to as an aggressor base station.
  • the second UEs 120 in the second cell experience CLI to downlink communications transmitted to the second UEs 120
  • the second UEs 120 may be referred to as victim UEs and the second cell may be referred to as a victim cell.
  • a base station 110 of the second cell may be referred to as a victim base station.
  • the symbol in the aggressor cell may be referred to as an interfering symbol
  • the symbol in the victim cell may be referred to as an interfered symbol.
  • a UE 120 (shown as UE A) and a base station 110 may communicate with one another.
  • the UE 120 may transmit, and the base station 110 may receive, information relating to a geographic location of the UE 120, which may be a geographic point, a geographic region (e.g., a set of geographic points) , and/or the like. In some aspects, such information may be referred to as geographic information.
  • the base station 110 may use this geographic information (e.g., the geographic location) to assign the UE 120 to a UE group that corresponds to a CLI-RS configuration, as described in more detail below.
  • the base station 110 may store information regarding locations of neighbor cells, and thus may be able to estimate a location of the UE 120 (e.g., a portion of the cell covered by one or more neighbor base stations detected by the UE 120) based at least in part on determining which of those neighbor cells are detected by the UE 120.
  • a location of the UE 120 e.g., a portion of the cell covered by one or more neighbor base stations detected by the UE 120
  • network resources may be conserved by reducing overhead needed for CLI-RS (e.g., by re-using a CLI-RS configuration for multiple UEs 120) , while reducing the likelihood of inaccurate CLI-RS measurements (e.g., because a victim UE is less likely to receive CLI-RS from multiple UEs that are located near one another in an aggressor cell) .
  • Fig. 6 is provided as an example. Other examples may differ from what is described with respect to Fig. 6.
  • Fig. 8 is a diagram illustrating an example process 800 performed, for example, by a UE, in accordance with various aspects of the present disclosure.
  • Example process 800 is an example where a UE (e.g., a UE 120, a victim UE 120, an aggressor UE 120, and/or the like) performs operations associated with UE grouping for CLI-RS configuration.
  • a UE e.g., a UE 120, a victim UE 120, an aggressor UE 120, and/or the like
  • performs operations associated with UE grouping for CLI-RS configuration e.g., a UE 120, a victim UE 120, an aggressor UE 120, and/or the like
  • the information relating to the geographic location indicates at least one of: GPS data determined by the UE, a beam to be used by the UE, one or more beam parameters measured by the UE, one or more neighbor cell identifiers of one or more neighbor cells detected by the UE, one or more signal strength parameters measured by the UE for the one or more neighbor cells, a signal strength parameter measured by the UE for a serving cell, a timing advance value to be used by the UE, an interference measurement of the UE, or a combination thereof.
  • process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 8. Additionally, or alternatively, two or more of the blocks of process 800 may be performed in parallel.
  • Process 900 may include additional aspects, such as any single implementation or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the UE and the one or more other UEs are assigned to the same UE group based at least in part on a determination that the condition is satisfied. In some aspects, the UE and the one or more other UEs are assigned to the different UE groups based at least in part on a determination that the condition is not satisfied.
  • different UEs having geographic locations determined or estimated to be within a threshold proximity of one another or within a same geographic region are assigned to different UE groups. In some aspects, different UEs having geographic locations determined or estimated to be outside of a threshold proximity of one another or in different geographic regions are assigned to a same UE group.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .

Abstract

Selon divers aspects, la présente invention concerne généralement la communication sans fil. Selon certains aspects, un équipement d'utilisateur (aussi abrégé UE, de l'anglais « user equipment ») peut transmettre à une station de base des informations relatives à un emplacement géographique de l'UE. L'équipement utilisateur peut recevoir une configuration de signal de référence d'interférence de liaison croisée (ou CLI-RS, de l'anglais « cross-link interference reference signal » ) sur la base, au moins en partie, de la transmission des informations relatives à l'emplacement géographique. L'équipement utilisateur peut transmettre ou mesurer un ou plusieurs CLI-RS sur la base, au moins en partie, de la configuration CLI-RS. L'invention se présente également sous de nombreux autres aspects.
PCT/CN2019/075105 2019-02-14 2019-02-14 Groupement d'équipements d'utilisateur pour configuration de signal de référence d'interférence de liaison croisée WO2020164063A1 (fr)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2021034636A1 (fr) * 2019-08-16 2021-02-25 Qualcomm Incorporated Mesure d'interférence de liaison croisée assistée par position
WO2023220936A1 (fr) * 2022-05-17 2023-11-23 Nec Corporation Procédé, dispositif et support lisible par ordinateur destinés aux communications
WO2024044431A1 (fr) * 2022-08-23 2024-02-29 Qualcomm Incorporated Activité de mesure d'interférence de liaison croisée pendant une période d'inactivité d'entité de réseau

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CN109088683A (zh) * 2017-06-14 2018-12-25 中国移动通信有限公司研究院 一种用户终端间交叉链路干扰测量的方法、用户终端和传输接收点

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CN109088683A (zh) * 2017-06-14 2018-12-25 中国移动通信有限公司研究院 一种用户终端间交叉链路干扰测量的方法、用户终端和传输接收点

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021034636A1 (fr) * 2019-08-16 2021-02-25 Qualcomm Incorporated Mesure d'interférence de liaison croisée assistée par position
US11641264B2 (en) 2019-08-16 2023-05-02 Qualcomm Incorporated Position assisted cross-link interference measurement
WO2023220936A1 (fr) * 2022-05-17 2023-11-23 Nec Corporation Procédé, dispositif et support lisible par ordinateur destinés aux communications
WO2024044431A1 (fr) * 2022-08-23 2024-02-29 Qualcomm Incorporated Activité de mesure d'interférence de liaison croisée pendant une période d'inactivité d'entité de réseau

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