Abstract:

This paper presents a new protocol called GM-MAC that introduces geographic information into MAC based on multiple channels. It agrees the shortest di  stance between two nodes has a better priority and provides better QoS. The format is defined in this paper, the operational steps of the protocol is ex  plored,and the throughput is analyzed. The simulation results show that it can decrease the average end-to-end delay and improve the throughout.

Key words: ad hoc networks geographic location, multi-channel;time division multiple access, medium access contr ol protocol