ACTIVE SET UPDATE (ASU) WITH HIGH SPEED DOWNLINK SHARED CHANNEL (HS-DSCH) INFORMATION

摘要

Because the current RRC: ACTIVE SET UPDATE message presently used in soft handover does not contain HS-DSCH related information, which could be utilized for a Serving HS-DSCH cell change, a separate Radio Bearer Control procedure is needed between the UE ( 10 ) and the RNC ( 20 ) for carrying out the Serving HS-DSCH cell change. Should HS-DSCH related information-applicable to Serving HS-DSCH cell change-be added to the RRC: ACTIVE SET UPDATE message ( 32 ), an unnecessary Radio Bearer Control procedure is avoided, and the drawbacks of the current method are overcome.