Patent ID: 7839834

Claim:
A method of exchanging data in a communication system, comprising: transmitting data in accordance with a first radio link protocol (RLP) via a forward link; and receiving data in accordance with a second RLP via a reverse link, wherein the first and second RLPs are asymmetric and have different feedback mechanisms for the first RLP via the forward link and for the second RLP via the reverse link, the forward link employing a negative acknowledge (NAK)-based feedback and the reverse link employing an acknowledgement (ACK)-based feedback; retransmitting the transmitted data in response to receiving a NAK; setting a NAK timer to an adaptive value when there is no more data to transmit, wherein the adaptive value of the NAK timer is a function of frame inter-arrival times at a forward link receiving entity; and retransmitting a portion of last transmitted data upon expiration of the timer.