Abstract:

To improve the success probability of transmitted packets of leader nodes in tactics Ad Hoc network, a novel backoff algorithm was proposed, which was different from general methods of setting backoff intervals. When the leader succeeded to send a packet, the backoff interval was set as the maximum value. After failing to send a packet, the backoff interval was gradually shortened when times of retransmission increased. Then its performance was theoretically analyzed. Computer simulation shows that the success probability of packets of leader nodes which are transmitted is greatly improved and little effect is given to the success probability of packets of common nodes.

Key words: tactics Internet, Ad Hoc network, media access control, backoff algorithm, backoff interval