| 摘要 |
A method and an apparatus for processing a control message for a request of retransmission are provided. The method includes generating a First Missing Serial number (FMS) describing a serial number of a data unit having a lowest serial number among data units which are not received, determining whether a data unit having a serial number greater than the serial number described in the FMS exists due to an out of sequence among data units which are previously received, generating a bitmap indicating a reception of a plurality of data units having a serial number greater than the FMS, if a data unit which is out of sequence exists, and connecting and transmitting the FMS and the bitmap.
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