SYSTEM FOR EFFICIENT RECOVERY OF NODE-B BUFFERED DATA FOLLOWING MAC-LAYER RESET

摘要

PROBLEM TO BE SOLVED: To efficiently recover node-B buffered data.

SOLUTION: The method and system reduces transmission latency and potentially prevents loss of PDUs upon a MAC-layer reset. UE generation of the status PDU is coupled with the MAC-layer reset. The RNC generates a message with a MAC reset indication (16). Following the MAC-layer reset; all the PDUs stored in the UE MAC layer reordering buffers (22) are flushed to RLC entities (24) and then are processed by RLC entities, prior to the generation of a PDU status report (26). The PDU status report provides to the RNC the status of all successfully received PDUs. Upon the receipt of a PDU status report in the RNC (28), missing PDUs are recognized and are retransmitted to the UE (30).

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