Patent ID: 11026281

Abstract:
The present disclosure provides a method performed at user equipment (UE) and corresponding UE. The method comprises: receiving a medium access control (MAC) control element (CE) so as to indicate activating and/or deactivating of packet duplication of a data radio bearer (DRB); if the packet duplication is configured and the packet duplication is activated, then submitting, by a Packet Data Convergence Protocol (PDCP) entity, a PDCP protocol data unit (PDU) to two radio link control (RLC) entities; and if the packet duplication is configured and the packet duplication is deactivated, then submitting, by the PDCP entity, the PDCP PDU to one of the two RLC entities, wherein the MAC CE comprises a bitmap having a fixed size, each bit in the bitmap corresponding to a packet duplication DRB identity arranged in an ascending order; and a bit set to 1 in the bitmap indicates activating of the packet duplication of the corresponding DRB, and a bit set to 0 in the bitmap indicates deactivating of the packet duplication of the corresponding DRB. The present disclosure further provides another method performed at UE and corresponding UE, as well as a method performed at a base station and a corresponding base station.