Systems and Methods to Provide CSI-RS/TRS Indication to UEs in Idle/Inactive Mode

    公开(公告)号:US20230142355A1

    公开(公告)日:2023-05-11

    申请号:US17593748

    申请日:2020-07-31

    Applicant: Apple Inc.

    CPC classification number: H04W72/23 H04L5/0048 H04W68/005

    Abstract: An example method for wireless communication includes: transmitting by a base station, to a user device in a reduced power state, resource information for receiving a channel state information reference signal (CSI-RS) and tracking reference signal (TRS); transmitting the CSI-RS and TRS based on the transmitted resource information to the user device, wherein the user device has exited the reduced power state; determining whether there is paging information to transmit in a first physical downlink shared channel (PDSCH) transmission for the user device; transmitting a downlink control information message, wherein the downlink control information message is based on the determination that there is paging information for the user device, and wherein the user device has synchronized with the base station; and transmitting the first PDSCH transmission, based on the determination that there is paging information for the user device.

    CONTROL SIGNALING FOR UPLINK FREQUENCY SELECTIVE PRECODING

    公开(公告)号:US20230094010A1

    公开(公告)日:2023-03-30

    申请号:US17811997

    申请日:2022-07-12

    Applicant: APPLE INC.

    Abstract: Systems and methods using control signaling for uplink frequency selective precoding at a user equipment (UE) are disclosed herein. A base station may indicate a transmission rank indicator (TRI), a wideband transmission precoder matrix indicator (TPMI), and one or more subband TPMI(s) to the UE. The base station may indicate, to the UE, whether to use the wideband TPMI or a subband TPMI to precode a physical uplink shared channel (PUSCH) transmission from the UE to the base station. The UE then precodes (and transmits) the PUSCH accordingly. Methods of UE application of the indicated subband TPMI(s) to subbands of the bandwidth in which a PUSCH may be transmitted are described. Methods accounting for a UE capability as to non-coherent, partial-coherent, and/or coherent precoding are described. Methods of assigning TPMI(s) to subbands in view of multiple transmission reception point (TRP) use by the UE for UE transmission are described.

    SMTC2-LP BASED RRM ENHANCEMENT
    228.
    发明申请

    公开(公告)号:US20230092295A1

    公开(公告)日:2023-03-23

    申请号:US17593224

    申请日:2021-01-15

    Applicant: APPLE INC.

    Abstract: Provided is a method for a user equipment (UE), comprising performing, based on acquired information, in at least one of an idle mode and an inactive mode, at least One of an intra-frequency neighbor cell measurement and an inter-frequency neighbor cell measurement. The acquired information comprises at least one of a group of a periodicity of synchronization signal and physical broadcast channel block (SSB)-based measurement timing configuration (SWTC) and a periodicity of SMTC2-long periodicity (SMTC2-LP) and a physical cell identifier (PCI) list of SMTC2-LP.

    DEFAULT BEAMS FOR PDSCH, CSI-RS, PUCCH AND SRS

    公开(公告)号:US20230083208A1

    公开(公告)日:2023-03-16

    申请号:US17951789

    申请日:2022-09-23

    Applicant: Apple Inc.

    Abstract: A method and apparatus for configuring default beams by a base station are disclosed and include determining configuration information that specifies a default Physical Uplink Control Channel/Sounding Reference Signal (PUCCH/SRS) beam and pathloss Reference Signal (RS) for a User Equipment (UE), and transmitting to the UE the configuration information identifying a default configuration for the default PUCCH/SRS beam and pathloss reference signal (RS). The default PUCCH/SRS beam and pathloss RS configured by the UE are based on the configuration information and a monitored Control Resource Set (CORESET) with a lowest CORESET identifier (ID) selected among a set of CORESETs in a same Bandwidth Part (BWP). The monitored CORESET selected may include two transmission configuration indicator (TCI) states. The default PUCCH/SRS beam and pathloss RS configured is based on a TCI first among the two TCI states or a TCI state with a lowest ID among the two TCI states.

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