Abstract:

To reduce the impact of the multi-rate sharing problem on multi-hop wireless networks, combining with the message of the routing process, a cross-layer design method of the channel assignment is proposed based on the rate and the network traffic. It proposes a capacity cost function, and designs an optimized channel assignment model. It reduces the impact of new access service on existing service, while ensuring that the bandwidth requirement of the new service, and then achieves the optimization of the rate and the channel with the routing process at one time. Simulations show that the method greatly improves the network throughput, and saves a lot of protocol overhead.

Key words: multi-hop wireless networks, channel assignment, multi-rate, cross-layer design