BASE STATION-AIDED USER EQUIPMENT (UE) ANTENNA SELECTION

    公开(公告)号:WO2023023877A1

    公开(公告)日:2023-03-02

    申请号:PCT/CN2021/113925

    申请日:2021-08-21

    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support mechanisms for base station-assisted UE antenna port selection. A user equipment (UE) transmits, to a base station, a sounding reference signal (SRS) switching capability report (e.g., a xTyR report) indicating to the base station a number of receive antenna ports configured for the UE. (e.g., capability to transmit on x antenna ports and reception over a total of y antenna ports). The UE transmits an SRS to the base station sounding the y antenna ports. The base station selects and indicates y' antenna ports out of the y antenna ports for the UE to receive a subsequent downlink data transmission based on a channel estimation based on the SRS transmission, or based on channel state feedback (CSF). In aspects, the UE provides a recommendation of y', and the base station may determine y' based on the UE's recommendation.

    SOUNDING REFERENCE SIGNAL REPETITION CONFIGURATION

    公开(公告)号:WO2022133861A1

    公开(公告)日:2022-06-30

    申请号:PCT/CN2020/138854

    申请日:2020-12-24

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information that configures a reference signal (RS) transmission with a repetition factor, wherein the configuration information indicates one or more parameters for the RS transmission including at least one of: a sequence hopping configuration associated with the RS transmission, a cyclic shift offset configuration associated with the RS transmission, or a frequency hopping configuration indicating subcarrier hopping across adjacent RS symbols. The UE may perform the RS transmission using the repetition factor in accordance with the configuration. Numerous other aspects are described.

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