APPARATUS AND METHOD FOR SHARING RADIO PROTOCOL ENTITIES IN WIRELESS COMMUNICATION SYSTEM.

摘要

A radio protocol entity sharing apparatus and method are provided for a multimedia broadcast/multicast service (MBMS) in a plurality of cells. Different cells share a second-layer protocol entity (MAC, RLC, PDCP) to use the same channel parameter values (CPV identifier) and the same protocol parameter values (CPV information), thereby reducing a delay resulting from re-establishing a radio bearer in the event of handover, minimizing data loss during handover, conserving network resources, and enhancing reception performance at the mobile station (UE) via soft combining. The method includes steps of receiving, in a mobile station (UE), a first parameter value and a first parameter indicator (S601); establishing a channel using the first parameter value and the first parameter value indicator and receive MBMS data (S602); receiving, in the mobile station (UE), a second parameter value indicator (S604); and maintaining the established channel if the first parameter value indicator is identical to the second parameter value indicator (S606). If said first and second parameter value indicators are different, the channel is re-established using a received second parameter value (S607).