Patent ID: 6567388
Filing Date: 2003-05-20
Classification: H04L

Abstract:
Method for efficient data retransmission in a voice-over-data communication system between a first wireless communication device and a second wireless communication device, said first wireless communication device comprising a first transmitter and a first receiver, said second wireless communication device comprising a second transmitter and a second receiver, comprising the steps of:transmitting a frame of data by said first transmitter in accordance with a preexisting data transmission protocol, said frame comprising audio information; receiving said frame by said second receiver in accordance with said preexisting data transmission protocol; transmitting a negative-acknowledgement message (NAK) by said second transmitter in accordance with said pre-existing data transmission protocol if said frame was received in error by said second receiver, said NAK identifying said frame; receiving said NAK by said first receiver; and transmitting n copies of said frame by said first transmitter in response to said NAK, each of said copies transmitted in close succession to each other, wherein n is independent of the number of times said frame has been received in error, wherein transmitting n copies of said frame comprises the steps of: immediately transmitting a first copy of said frame; and transmitting a second copy of said frame only if an empty time slot occurs within a predetermined time period after said first copy is transmitted.