APPARATUS AND METHOD FOR MOVING A RECEIVE WINDOW IN A RADIO ACCESS NETWORK

摘要

A method of moving a receiving window in a wireless mobile communication system, wherein the AM RLC of the transmitting side sends information of the last discarded SDU regardless of continuity of the discarded SDUs. The AM RLC of the receiving side checks whether all SDUs from the start point of the receiving window up to the last discarded SDU are successfully received, delivers the SDUs that are successfully received to an upper layer, and discard only those SDUs that are not successfully received.

主权项

1. A method for moving a receiving window in a radio communication system, the method comprising:
receiving, by a receiving side, data units, from a transmitting side, wherein each of the data units has a sequence number; if a sequence number of each of the received data unit is within a range of the receiving window, updating, by the receiving side, a start value of the receiving window; receiving, by the receiving side, a move receiving window (MRW) command for moving the receiving window from the transmitting side, wherein the MRW command is transmitted by the transmitting side when previously transmitted data has been discarded; passing, by the receiving side, any successfully received data unit with a sequence number which is lower than a sequence number indicated by the MRW command, up to an upper layer; and in response to the MRW command, setting, by the receiving side, the start value of the receiving window to a next value of a sequence number that corresponds to a last data unit that was passed to the upper layer.