METHOD AND APPARATUS FOR SWITCHING UPLINK TRANSMISSION ON UPLINK SPLIT BEARER

A user equipment (UE) configured for dual connectivity with a split bearer configuration may transmit uplink data packets to one or both of a primary cell group (MCG) and a secondary cell group (SCG). The UE may transmit an uplink transmission from a packet data convergence protocol (PDCP) entity on one or both of a first radio link control (RLC) entity associated with the MCG and a second RLC entity associated with the SCG. The configuration includes a transmit buffer threshold. The UE may receive an uplink handover start indication at a PDCP entity. The UE may activate the second RLC entity in response to receiving the uplink handover start indication. The UE may transmit a buffer status report according to a current transmit buffer level plus a transmit buffer threshold. Accordingly, the UE may communicate with the SCG based on the uplink handover start indication. 被配置用于具有拆分承载配置的双连接的用户设备(UE)可以向主小区组(MCG)和辅小区组(SCG)中的一者或两者发送上行链路数据分组。UE可以在与MCG相关联的第一无线电链路控制(RLC)实体和与SCG相关联的第二RLC实体中的一者或两者上发送来自分组数据汇聚协议(PDCP)实体的上行链