Method and apparatus for carrier selection and early data transmission (EDT) in a wireless communication system

    公开(公告)号:US11601980B2

    公开(公告)日:2023-03-07

    申请号:US16909425

    申请日:2020-06-23

    Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE initiates a first Early Data Transmission (EDT) in RRC_INACTIVE state. Responsive to initiating the first EDT, the UE initiates a Random Access (RA) procedure in a cell configured with a normal uplink (NUL) carrier and a supplementary uplink (SUL) carrier. The UE selects the SUL carrier or the NUL carrier for performing the RA procedure based on at least one of whether there are one or more available Physical Random Access Channel (PRACH) resources for EDT on the SUL carrier or whether there are one or more available PRACH resources for EDT on the NUL carrier.

    METHOD AND APPARATUS FOR MULTIPLE-USIM DEVICE IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220104001A1

    公开(公告)日:2022-03-31

    申请号:US17546115

    申请日:2021-12-09

    Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE) with a first Universal Subscriber Identity Module (USIM) and a second USIM, the UE establishes a connection associated with the first USIM, wherein a UE state corresponding to the first USIM enters connected state. The UE stops monitoring paging in a serving cell for the second USIM based on a time domain pattern derived using a second UE Identifier (UE ID) associated with the second USIM, wherein the stopping monitoring paging is performed when the UE state corresponding to the first USIM is connected state and a UE state corresponding to the second USIM is idle state or inactive state. The UE receives, in a serving cell for the first USIM from a network node, an indication associated with activity for the second USIM via the connection associated with the first USIM.

    METHOD AND APPARATUS FOR TIMER CONTROL FOR RRC CONNECTION RESUME PROCEDURE IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220078875A1

    公开(公告)日:2022-03-10

    申请号:US17402103

    申请日:2021-08-13

    Abstract: Methods and apparatuses are provided for starting a timer, or one or more timers, upon initiation of a RRC connection resume procedure, wherein the timer is used to control duration of the RRC connection resume procedure. The timer used to control the duration of RRC connection resume procedure can be well managed, controlled, and configured in the case of small data transmission and possible subsequent data transmission. The timer can be stopped by the UE without receiving a RRC response message of a RRC Resume Request message. The timer can be restarted upon completion of a random access procedure. There can be multiple timers, e.g., two in certain embodiments, of varying values and/or lengths.

    METHOD AND APPARATUS FOR TIMING ADVANCE VALIDATION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210112559A1

    公开(公告)日:2021-04-15

    申请号:US17036715

    申请日:2020-09-29

    Abstract: A method and device are disclosed from the perspective of a UE (User Equipment). In one embodiment, the method includes the UE receiving a first signaling to configure a preconfigured uplink resource (PUR) to be used in a cell. The method further includes the UE determining whether to use the PUR in the cell at least based on whether a timing advance is valid, wherein whether the timing advance is valid is based on a difference between a first measurement result and a second measurement result, and wherein the first measurement result is not a cell measurement quantity of the cell.

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