METHOD AND APPARATUS FOR CONFIGURING SIDELINK COMMUNICATION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210345433A1

    公开(公告)日:2021-11-04

    申请号:US17378691

    申请日:2021-07-17

    Abstract: A method and apparatus are disclosed from the perspective of a first UE (User Equipment) in RRC_CONNECTED to detect configuration failure. In one embodiment, the method includes the first UE transmitting a first PC5 RRC (Radio Resource Control) message to a second UE, wherein the first PC5 RRC message includes an AS (Access Stratum)-layer configuration for a unicast link established with the second UE. The method also includes the first UE transmitting a fourth RRC message to a network node if a configuration failure of the AS-layer configuration is detected, wherein the fourth RRC message indicates the configuration failure occurs.

    METHOD AND APPARATUS FOR SIDELINK SIGNALING RADIO BEARER (SRB) ESTABLISHMENT IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210243827A1

    公开(公告)日:2021-08-05

    申请号:US17233509

    申请日:2021-04-18

    Abstract: A method and apparatus are disclosed. A first sidelink Signaling Radio Bearer (SRB) for PC5-S message transmission is established. The first sidelink SRB is associated with a default Destination Layer-2 Identity (ID). A first PC5-S message is transmitted on the first sidelink SRB with a Source Layer-2 ID derived from a Layer-2 ID of the first UE and a Destination Layer-2 ID derived from the default Destination Layer-2 ID. A second PC5-S message is received from a second UE. The second PC5-S message is transmitted with a Source Layer-2 ID derived from a Layer-2 ID of the second UE and a Destination Layer-2 ID derived from the Layer-2 ID of the first UE. A second sidelink SRB for PC5-S message reception and/or transmission is established. The second sidelink SRB is associated with the Layer-2 ID of the second UE.

    Method and apparatus for sidelink signaling radio bearer (SRB) establishment in a wireless communication system

    公开(公告)号:US11019670B1

    公开(公告)日:2021-05-25

    申请号:US17097681

    申请日:2020-11-13

    Abstract: A method and apparatus are disclosed. The first UE establishes a first sidelink Signaling Radio Bearer (SRB) for PC5-S message transmission if a unicast link or a PC5-Radio Resource Control (PC5-RRC) connection establishment is initiated, wherein the first sidelink SRB is associated with a default Destination Layer-2 Identity (ID). Also, the first UE transmits a first PC5-S message for the unicast link or the PC5-RRC connection establishment on the first sidelink SRB with a Source Layer-2 ID derived from a Layer-2 ID of the first UE and a Destination Layer-2 ID derived from the default Destination Layer-2 ID. Furthermore, the first UE receives a second PC5-S message from a second UE, wherein the second PC5-S message is transmitted with a Source Layer-2 ID derived from a Layer-2 ID of the second UE and a Destination Layer-2 ID derived from the Layer-2 ID of the first UE. In addition, the first UE establishes a second sidelink SRB for PC5-S message reception and/or transmission, wherein the second sidelink SRB is associated with the Layer-2 ID of the second UE. Furthermore, the first UE establishes a third sidelink SRB for PC5-RRC message transmission if the unicast link or the PC5-RRC connection establishment has been successfully completed, wherein the third sidelink SRB is associated with the Layer-2 ID of the second UE.

    Method and apparatus for supporting QOS (quality of service) flow to DRB (data radio bearer) remapping for sidelink communication in a wireless communication system

    公开(公告)号:US10952230B1

    公开(公告)日:2021-03-16

    申请号:US17071145

    申请日:2020-10-15

    Abstract: A method and apparatus are disclosed from the perspective of a first User Equipment (UE) to support PC5 QoS flow to SL-DRB (Sidelink-Data Radio Bearer) remapping. In one embodiment, the method includes the first UE establishing a sidelink communication with a second UE. The method further includes the first UE mapping a PC5 QoS flow of the sidelink communication to a first SL-DRB. The method also includes the first UE transmitting a PC5 RRC (Radio Resource Control) message to the second UE, wherein the PC5 RRC message indicates the PC5 QoS flow is mapped to a second SL-DRB. In addition, the method includes the first UE transmitting an end-marker control PDU (Protocol Data Unit) to the second UE after successful transmission of the PC5 RRC message has been confirmed by lower layer(s) or after receiving a PC5 RRC complete message corresponding to the PC5 RRC message from the second UE.

    Method and apparatus for serving quality of service (QOS) flow in a wireless communication system

    公开(公告)号:US10798754B2

    公开(公告)日:2020-10-06

    申请号:US16043818

    申请日:2018-07-24

    Abstract: A method and apparatus are disclosed from the perspective of a network node. In one embodiment, the method includes the network node transmitting a first message with a DRB (Data Radio Bearer) configuration to a UE (User Equipment) for establishing a default DRB for a PDU (Packet Data Unit) session, wherein the DRB configuration includes a QFI (QoS Flow Id) configuration used to indicate whether a QFI field is present or not in uplink for the default DRB and the QFI configuration is always set to a value indicating the QFI field is present in uplink for the default DRB. The method further includes the network node establishing the default DRB with a presence of the QFI field in uplink. The method also includes the network node receiving a SDAP (Service Data Adaptation Protocol) PDU with the QFI field via the default DRB from the UE.

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