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Selective retransmission of data

  • US 7,142,542 B2
  • Filed: 11/15/2001
  • Issued: 11/28/2006
  • Est. Priority Date: 11/15/2001
  • Status: Active Grant
First Claim
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1. A method in a receiver for effecting selective retransmission by a transmitter within a communication system wherein packets at a higher layer are segmented and transmitted via a link-layer protocol, the method comprising the steps of:

  • in the receiver,determining in the receiver that a link-layer frame needs to be aborted;

    determining a set of link-layer frames (V(B)) having higher-layer packet boundaries;

    setting V(N) to a next missing link-layer frame after a higher-layer packet boundary if V(B) is not an empty set, otherwise setting V(N) to V(R), wherein V(N) is a frame number of a next link-layer frame needed for sequential deliver of frames and V(R) is a frame number of a next new link-layer frame expected; and

    pushing all frames with sequence numbers up to V(N) up to the higher layer.

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