METHOD AND APPARATUS FOR TRIGGERING POWER HEADROOM REPORT FOR MULTIPLE PATHLOSS REFERENCE IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20210235390A1

    公开(公告)日:2021-07-29

    申请号:US17205933

    申请日:2021-03-18

    Abstract: A method and apparatus are disclosed from the perspective of an User Equipment (UE). In one embodiment, the method includes the UE deriving a first pathloss value from a first pathloss reference of a serving cell, wherein the first pathloss value is used for deriving a power headroom value included in a first power headroom report. The method also includes the UE deriving a second pathloss value from a second pathloss reference of the serving cell after deriving the first pathloss value, wherein the second pathloss reference is used for power control for a first Physical Uplink Shared Channel (PUSCH) transmission on the serving cell. The method further includes the UE deriving the pathloss change based on the first pathloss value and the second pathloss value. In addition, the method includes the UE determining whether a second power headroom report is triggered based on whether the pathloss change is more than a threshold.

    METHOD AND APPARATUS FOR MOBILITY PROCEDURE REGARDING MAC RESET IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220078670A1

    公开(公告)日:2022-03-10

    申请号:US17410020

    申请日:2021-08-24

    Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives a first Radio Resource Control (RRC) message indicative of switching a Primary Cell (PCell) of the UE to a first cell, wherein the first RRC message is indicative of a first configuration of the first cell. The UE resets a Medium Access Control (MAC) entity associated with the PCell of the UE in response to receiving the first RRC message. The UE receives a second RRC message indicative of a second configuration of a second cell. The UE receives a signaling indicative of initiating a mobility procedure to switch the PCell of the UE to the second cell. The signaling includes a Physical Downlink Control Channel (PDCCH) signaling and/or a MAC Control Element (CE). The UE does not reset the MAC entity associated with the PCell of the UE in response to the mobility procedure.

    METHOD AND APPARATUS FOR MULTI-TRANSMISSION/RECEPTION POINT POWER HEADROOM REPORTING IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220217644A1

    公开(公告)日:2022-07-07

    申请号:US17558669

    申请日:2021-12-22

    Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives an uplink (UL) grant. The UL grant is indicative of a first Physical Uplink Shared Channel (PUSCH) transmission on a first Transmission/Reception Point (TRP) of a first cell. The UL grant is indicative of a second PUSCH transmission on a second TRP of the first cell. The UE transmits a Power Headroom Reporting (PHR) Medium Access Control (MAC) Control Element (CE). Based on the UL grant, the PHR MAC CE is indicative of a first power headroom (PH), associated with the first TRP, based on a real PUSCH transmission, and is indicative of a second PH, associated with the second TRP, based on a reference PUSCH transmission. The second PUSCH transmission is performed after transmitting the PHR MAC CE.

    METHOD AND APPARATUS FOR SMALL DATA TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM

    公开(公告)号:US20220086946A1

    公开(公告)日:2022-03-17

    申请号:US17463719

    申请日:2021-09-01

    Abstract: A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE), the UE receives, when the UE is in Radio Resource Control (RRC) connected state, a first Radio Network Temporary Identifier (RNTI) in a first RRC message. The UE monitors, when the UE is in RRC connected state, a Physical Downlink Control Channel (PDCCH) using the first RNTI. The UE receives a second RRC message indicative of the UE transitioning from RRC connected state to RRC inactive state. The UE determines an RNTI, comprising the first RNTI or a second RNTI, based on whether or not the second RRC message comprises the second RNTI. The UE monitors, when the UE is in RRC inactive state, the PDCCH using the RNTI.

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