METHOD AND APPARATUS FOR PROCESSING DATA UNIT IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220078666A1

    公开(公告)日:2022-03-10

    申请号:US17416954

    申请日:2020-01-29

    Abstract: The present invention relates to a method of processing a data unit by a Service Data Adaptation Protocol (SDAP) entity of a user equipment (UE) in a wireless communication system. In particular, the method includes the steps of: receiving a SDAP Service Data Unit (SDU) from an upper layer; generating a SDAP protocol data unit (PDU) including a SDAP header and the SDAP SDU; and submitting the SDAP PDU to a lower layer, wherein the SDAP header includes a Quality of Service (QoS) Flow Identifier (QFI) field, wherein, based on that the QFI field has a specific value, the SDAP header further includes an extended QFI field having a value corresponding to the SDAP SDU.

    METHOD FOR PERFORMING A BUFFER STATUS REPORTING IN A D2D COMMUNICATION SYSTEM AND DEVICE THEREFOR

    公开(公告)号:US20210185558A1

    公开(公告)日:2021-06-17

    申请号:US17182786

    申请日:2021-02-23

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing a buffer status reporting in a D2D communication system, the method comprising: configuring a plurality of sidelink logical channels, wherein each of the plurality of sidelink logical channels has an associated priority and belongs to a LCG, and one or more of LCGs belong to a ProSe Destination; generating a SL BSR MAC CE including buffer sizes of LCGs in decreasing order of a LCG priority, wherein the LCG priority of a LCG is determined as a highest priority of a logical channel among priorities of logical channels belonging to the LCG; and transmitting a MAC PDU including the SL BSR MAC CE.

    METHOD AND APPARATUS FOR MANAGING UPLINK TRANSMISSION COLLISION ON SHARED RESOURCES IN WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210176778A1

    公开(公告)日:2021-06-10

    申请号:US16768803

    申请日:2019-01-17

    Abstract: The present invention relates to a method for performing uplink transmissions by a user equipment in a wireless communication system. In particular, the method includes the steps of: transmitting a data unit to a network using a configured uplink grant; receiving an uplink grant for retransmission of the data unit from the network; determining a retransmission timing using a parameter related to a retransmission delay; and retransmitting the data unit to the network using the uplink grant for retransmission on the determined retransmission timing. Especially, the configured uplink grant is shared by the user equipment and another user equipment, and the parameter indicates at least one instance of retransmission delay.

    APPARATUS AND METHOD FOR PERFORMING A RANDOM ACCESS PROCEDURE

    公开(公告)号:US20210105813A1

    公开(公告)日:2021-04-08

    申请号:US16500314

    申请日:2018-04-04

    Abstract: The method for a user equipment (UE) performing a random access procedure according to an embodiment of the present invention includes transmitting a first random access preamble; receiving a message including a backoff indicator (BI) and a backoff offset (BO) value; when a random access using the first random access preamble fails, selecting a backoff time based on the BI and the BO value; and transmitting a second random access preamble after the selected backoff time.

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