Conditional supplementary link activation and transmission

    公开(公告)号:US11805446B2

    公开(公告)日:2023-10-31

    申请号:US17423981

    申请日:2020-03-24

    CPC classification number: H04W28/0967 H04L5/0098 H04W28/0236 H04W76/15

    Abstract: A method and apparatus for conditional supplementary link activation and transmission in a wireless communication system is provided. A wireless device configures a primary transmission link and at least one supplementary transmission link. The primary transmission link is activated. The wireless device configures a first condition and a second condition. The wireless device determines that the first condition is met upon which the at least one supplementary transmission link is activated. The wireless device performs transmission by using at least one of activated transmission links based on whether the second condition is met.

    Method and apparatus for transmitting data unit in RRC inactive state by user equipment in wireless communication system

    公开(公告)号:US11696343B2

    公开(公告)日:2023-07-04

    申请号:US17469341

    申请日:2021-09-08

    CPC classification number: H04W74/0841 H04W72/23 H04W74/002 H04W76/20

    Abstract: A method for performing data transmission by a user equipment (UE) in a wireless communication system is disclosed. The method comprises steps of receiving a message indicating a change of a Radio resource control (RRC) state from a RRC CONNECTED state to a RRC INACTIVE state, wherein the message includes information related to a configured grant (CG) and a threshold; if a time gap between a current time and an uplink grant occasion associated with the configured grant is larger than or equal to the threshold, triggering a random access (RA) procedure for the data transmission; and performing the data transmission based on the RA procedure in the RRC INACTIVE state, wherein, if the time gap is smaller than the threshold, the data transmission is performed based on the uplink grant occasion associated with the configured grant.

    Method and apparatus for activating security and changing PDCP version

    公开(公告)号:US11564098B2

    公开(公告)日:2023-01-24

    申请号:US16638661

    申请日:2018-10-11

    Abstract: Provided is a method for changing, by a user equipment (UE), packet data convergence protocol (PDCP) version. The method may include: receiving a security mode command message, which includes a first security algorithm configuration for a PDCP of a first system and a second security algorithm configuration for a PDCP of a second system, from a base station (BS); deriving a first security key for the PDCP of the first system, based on the first security algorithm configuration; when the security mode command message passes an integrity protection check based on the first security key, changing the PDCP version from the PDCP of the first system to the PDCP of the second system; deriving a second security key for the PDCP of the second system, based on the second security algorithm configuration; and transmitting a security mode complete message, based on the second security key, to the BS.

    Method and apparatus for processing signals by node in wireless communication system

    公开(公告)号:US11425765B2

    公开(公告)日:2022-08-23

    申请号:US17051132

    申请日:2019-05-28

    Abstract: The present invention relates to a method for processing signals by a node in a wireless communication system. In particular, the method includes receiving a radio bearer (RB) configuration message from a network; and configuring a radio bearer between a radio link control (RLC) entity of the node and a peer RLC entity using the RB configuration message, wherein the RB configuration message includes information about that the peer RLC entity operates with a different RLC mode from a RLC entity of the node.

    Method for handling data lossless in a UM RLC entity in wireless communication system and a device therefor

    公开(公告)号:US11190977B2

    公开(公告)日:2021-11-30

    申请号:US16633457

    申请日:2018-09-21

    Abstract: The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for handling data lossless in a UM RLC entity in wireless communication system, the method comprising: receiving a Radio Resource Control (RRC) message for releasing or reestablishing of a Unacknowledged Mode (UM) Radio Link Control (RLC) entity; transmitting, by the UM RLC entity to a Packet Data Convergence Protocol (PDCP) entity associated with the UM RLC entity, information for transmission status of RLC Service Data Units (SDUs) stored in the UM RLC entity; and discarding all RLC SDUs and Unacknowledged Mode Data (UMD) Protocol Data Units (PDUs) stored in the UM RLC entity.

    Method for managing duplication modes by user equipment in wireless communication system and apparatus therefor

    公开(公告)号:US11051309B2

    公开(公告)日:2021-06-29

    申请号:US16547298

    申请日:2019-08-21

    Abstract: A method for processing a data unit by a Packet Data Convergence Protocol (PDCP) entity of a user equipment includes configuring three or more Radio Link Control (RLC) entities with the PDCP entity; activating a first duplication mode for first and second RLC entities among the three or more RLC entities; providing the data unit to the first and second RLC entities by duplicating the data unit; receiving a duplication mode change command from a network; changing the first duplication mode to a second duplication mode for the first RLC entity and a third RLC entity; and providing the data unit to the first and third RLC entities by duplicating the data unit, wherein the first and second RLC entities is configured with a first Media Access Control (MAC) entity, and wherein the third RLC entity is configured with a second MAC entity.

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