Distance-based channel assignment algorithm
Zhao Yiyun · Applied science and technology · 2012
In order to maximize the number of parallel transmission channels in a cognitive Ad Hoc network,a new channel assignment algorithm is proposed.As fading characteristics between channels are different,distances between nodes are estimated at first in this algorithm.According to the distance which had been estimated,a suitable channel was selected to exchange data.Channel statuses are updated based on the relations between interference distance and transmission distance,in order to increase the spatial reuse.Meanwhile,only broadcast and channel reservation information are permitted to be transmitted in common control channels to avoid the bottleneck effect of channel controlling.The simulation results indicate that the proposed channel assignment algorithm can increase spatial reuse of the channels and network throughput.Throughput of the algorithm can be increased by 12% than DDMAC method when the load is high at the same strategy.