Method for performing a buffer status reporting in a D2D communication system and device therefor

    公开(公告)号:US11641599B2

    公开(公告)日:2023-05-02

    申请号:US17886965

    申请日:2022-08-12

    IPC分类号: H04W28/02 H04W76/14 H04W72/12

    摘要: 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 DRX related timer in wireless communication system

    公开(公告)号:US11606783B2

    公开(公告)日:2023-03-14

    申请号:US16829883

    申请日:2020-03-25

    摘要: A method for processing downlink (DL) signals by a user equipment (UE) in a wireless communication system is disclosed. Especially, the UE is configured not to transmit a Hybrid Automatic Repeat and request (HARQ) feedback for the DL HARQ process. The method comprises steps of upon a first Physical downlink Control Channel (PDCCH) for the DL HARQ process is detected, starting a timer for monitoring subsequent PDCCHs related to retransmission of the DL HARQ process, without transmitting the HARQ feedback; and monitoring subsequent PDCCHs related to retransmission of the DL HARQ process while the timer is running.

    Multiple random access preamble transmission for a single random access procedure

    公开(公告)号:US11297651B2

    公开(公告)日:2022-04-05

    申请号:US16332458

    申请日:2017-09-06

    IPC分类号: H04W74/08 H04W74/00

    摘要: Method and apparatus for a user equipment (UE) performing random access are disclosed. For this end, the UE transmits first multiple random access preambles for a random access procedure to the network, and monitors random access responses respectively corresponding to each of the first multiple random access preambles during each of multiple random access response reception windows. The UE transmits second multiple random access preambles for the random access procedure to the network, if a random access response reception of the first multiple random access preambles is determined as not successful. Here, the random access response reception is determined as not successful, when none of the random access responses is successfully received until a last random access response reception window among the multiple random access response reception windows ends.

    Method for triggering a buffer status reporting in wireless communication system and a device therefor

    公开(公告)号:US11297638B2

    公开(公告)日:2022-04-05

    申请号:US16613227

    申请日:2018-05-18

    IPC分类号: H04W72/12

    摘要: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for triggering a buffer status reporting in wireless communication system, the method comprising: configuring with a first SR resource configuration and a second SR resource configuration; checking whether or not data is a first data on logical channels mapped to the first SR resource configuration, when the data becomes available for a first logical channel mapped to the first SR resource configuration, in a state that the first logical channel has a lower priority than a highest priority among priorities of logical channels having data, which are mapped to the second SR resource configuration; and triggering a first BSR if the data is the first data on logical channels mapped to the first SR resource configuration.

    Method and apparatus for managing uplink transmission collision on shared resources in wireless communication system

    公开(公告)号:US11234266B2

    公开(公告)日:2022-01-25

    申请号:US16768803

    申请日:2019-01-17

    IPC分类号: H04W72/14 H04L1/18 H04W72/12

    摘要: 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.