Patent ID: 6717915
Filing Date: 2004-04-06
Classification: H04L,H04W

Abstract:
A method for implementing retransmission back-off in a wireless data network comprising at least one wireless client device and a server device, the method comprising:receiving client timing statistics from the at least one wireless client device; estimating a server roundtrip travel time, the server round-trip travel time comprising a travel time for a message from the server device to the at least one wireless client device, a travel time for a response to the message from the at least one wireless client device to the server device, and a processing time for the at least one wireless client device to process the message from the server device; measuring an actual server roundtrip travel time for the message and the response; and calculating a set of server retransmission time values/for retransmitting unacknowledged server device messages to the at least one wireless client device based on the client timing statistics, the estimated server roundtrip travel time, and the actual server roundtrip travel time.