Patent ID: 7304995

Claim:
A wireless communication system, comprising: a sender having a timer that produces a timing reference; a time signal generator that sends the timing reference to a receiver; a ranging offset determiner that computes a delay associated with transmitting between the sender and the receiver, the receiver having a timer that is synchronized to the timer of the sender based, at least in part, on at least one of, the timing reference, the delay, and the timer of the receiver; the sender further comprising a store for storing an expected receive time which based on the delay; an acknowledgement relationship establisher that establishes a relationship between the time reference and the expected receive time for an outgoing packet; an acknowledgement resolver that determines whether an acknowledgement received corresponds to the outgoing packet utilizing the expected receive time; and a retry determiner that determines whether the outgoing packet should be retransmitted based, at least in part, on the determination made by the acknowledgement resolver.