Method and apparatus for supporting RACH-less mobility with pre-allocated beams in wireless communication system
摘要
說明書
2> if rach-SkipSCG is configured:
3> configure lower layers to apply the rach-SkipSCG for the target SCG;
2> if the received scg-ConfigPartSCG includes the mobilityControlInfoSCG (i.e. SCG change):
3> resume all SCG DRBs and resume SCG transmission for split DRBs, if suspended;
3> stop timer T313, if running;
3> start timer T307 with the timer value set to t307, as included in the mobilityControlInfoSCG, if makeBeforeBreakSCG is not configured;
3> start synchronizing to the DL of the target PSCell;
3> initiate the random access procedure on the PSCell, if rach-SkipSCG is not configured:
The UE is not required to determine the SFN of the target PSCell by acquiring system information from that cell before performing RACH access in the target PSCell.
3> the procedure ends, except that the following actions are performed when MAC successfully completes the random access procedure on the PSCell or when MAC indicates the successful reception of a PDCCH transmission addressed to C-RNTI and if rach-skipSCG is configured:
4> stop timer T307;
4> release ul-ConfigInfo, if configured;
DL assignment reception is described. It may be referred to Section 5.3.1 of 3GPP TS 36.321 V15.0.0 (2017 December). DL assignments transmitted on the PDCCH indicate if there is a transmission on a DL-SCH for a particular MAC entity and provide the relevant HARQ information.
When the MAC entity has a C-RNTI, semi-persistent scheduling (SPS) C-RNTI, or temporary C-RNTI, the MAC entity shall for each TTI during which it monitors PDCCH and for each serving cell:
