METHOD AND APPARATUS OF IN SEQUENCE DELIVERY CONSIDERING MULTI-FLOW IN DUAL CONNECTIVITY SYSTEM

摘要

The present invention provides a method for enabling user equipment (UE) to receive multi-flow data for one evolved packet system (EPS) bearer through a small base station (small eNB) and a macro base station (macro eNB) in a wireless communication system which supports dual connectivity. The method comprises a step of enabling a packet data convergence protocol (PDCP) entity of the UE to receive the PDCP PDU from the PDCP entity of the macro base station through the macro base station and the small base station; a step of obtaining the PDCP service data units (SDU) corresponding to the PDCP packet data units (PDU); and a step of receiving information related to a sequential timer for the PDCP SDU through a radio resource control (RRC) message from the macro base station. The PDCP SDU is indicated to a previously defined PDCP sequence number (SN).