Patent ID: 7142542

Claim:
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.