METHOD AND APPARATUS FOR REPORTING POWER HEADROOM REPORT BY RRC_INACTIVE STATE UE IN MOBILE WIRELESS COMMUNICATION SYSTEM
A method and apparatus for data transfer in RRC_INACTIVE state is provided. Method for data transfer in RRC_INACTIVE state includes receiving configuration information for second resume procedure in RRCRelease, receiving configuration information for second resume procedure in System Information, and triggering a PHR. The triggered PHR is canceled if specific conditions are fulfilled.
1 . A method performed by a wireless device, the method comprising:
receiving a radio resource control (RRC) message, wherein the RRC message indicates a first power headroom report (PHR) configuration, wherein a multiple PHR parameter of the first PHR configuration is set to True;
after receiving the RRC message, receiving an RRC release message, wherein the RRC release message comprises a first configuration parameter for a second resume procedure different from a first resume procedure, and wherein the first configuration parameter for the second resume procedure comprises a signaling radio bearer2 (SRB2) indicator and a data radio bearer (DRB) list;
receiving system information indicating:
a first timer;
a second timer;
a reference signal received power threshold; and
a data volume threshold;
triggering, based on the second resume procedure being initiated, a PHR, wherein the triggered PHR is based on a second PHR configuration, and wherein a multiplePHR parameter of the second PHR configuration is set to False; and
canceling the triggered PHR, wherein the triggered PHR is canceled based on the second resume procedure being ongoing, wherein the second resume procedure is associated with a small data transmission (SDT).
2 . The method of claim 1 , wherein the first resume procedure is a procedure to resume a suspended RRC connection.
3 . The method of claim 2 , further comprising:
switching to the first resume procedure while performing the second resume procedure.