RANDOM ACCESS PROCEDURES BASED ON PDCCH ORDER

    公开(公告)号:US20240147541A1

    公开(公告)日:2024-05-02

    申请号:US18470308

    申请日:2023-09-19

    CPC classification number: H04W74/0833 H04L5/0055 H04W74/006

    Abstract: A method of operating a user equipment includes receiving a physical random access channel (PRACH) configuration for a serving cell, receiving a PRACH configuration for N additional cells, and receiving a physical downlink control channel (PDCCH) order. The PDCCH order includes a field for a cell ID, and a field for a synchronization signal/physical broadcast channel (SS/PBCH) block index corresponding to the cell ID. The method further includes determining a value of the cell ID field in the PDCCH order, determining a PRACH configuration associated with the cell ID, transmitting a PRACH in a PRACH occasion associated with the SS/PBCH block index and the corresponding cell ID, and, if the value of the cell ID field is non-zero, determining a PRACH transmission power based on a SS/PBCH block associated with the SS/PBCH block index and the corresponding cell ID included in the PDCCH order.

    TA INDICATION AND APPLICATION WITH MULTIPLE TRANSMISSION AND RECEPTION POINTS

    公开(公告)号:US20240235781A1

    公开(公告)日:2024-07-11

    申请号:US18177753

    申请日:2023-03-02

    CPC classification number: H04L5/0053 H04L5/0035 H04W72/0446

    Abstract: Methods and apparatuses for methods and apparatuses for facilitating signaling of multiple timing advance (TA) values to a user equipment (UE), facilitating the use of multiple TA values by a UE for communication with multiple transmission and reception points (TRPs), and facilitating updating of TA values in a wireless communications network. A UE comprises a transceiver and a processor operably coupled to the transceiver. The transceiver is configured to receive a first TA command that includes a first TA value and a first TA group (TAG) identifier (ID) associated with a first entity, and a second TA value and a second TAG ID associated with a second entity. The processor is configured to identify a TAG ID associated with an uplink (UL) transmission, and identify, based on the TAG ID, a TA value. The transceiver is further configured to transmit the UL transmission using the TA value.

    TA MEASUREMENT AND REPORTING WITH MULTIPLE TRANSMISSION AND RECEPTION POINTS

    公开(公告)号:US20230299902A1

    公开(公告)日:2023-09-21

    申请号:US18177744

    申请日:2023-03-02

    CPC classification number: H04L5/0035 H04W74/004 H04L5/0051

    Abstract: Methods and apparatuses for reporting with multiple transmission and reception points in a wireless communication system. A method of operating a user equipment (UE) includes receiving configuration information for a first list of synchronization signal/physical broadcast channel (SS/PBCH) block indices associated with a first timing advance group (TAG) and a second list of SS/PBCH block indices associated with a second TAG, receiving a contention free random access (CFRA)-based physical downlink control channel (PDCCH) order, and transmitting a physical random access channel (PRACH) preamble in response to the CFRA-based PDCCH order. The method further includes receiving a random access response (RAR) in response to the PRACH preamble, including a timing advance (TA) command and determining a TAG associated with the TA command based on an SS/PBCH block index associated with the CFRA-based PDCCH order.

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