A channel-aided cross-layer opportunistic forwarding scheme for multihop wireless networks

In this paper, we firstly develop link state change of wireless error link to improve packet successful delivery percentage and reduce collision probability of wireless Mesh networks. Based on statistics of link layer quality and the adaptive retransmission strategy, a channel-aided cross-layer opportunistic routing scheme CCOR for wireless Mesh networks is proposed to cope with the unreliable transmissions by exploiting the channel nature of wireless medium and cross-layer optimal forwarding strategy. The proposed scheme comprehensively utilizes the information of link available bandwidth, node residual load rate and path transmission efficiency to adaptively select an optimal path. Extensive simulation results demonstrate that the proposed scheme achieves higher throughput and lower link failure probability than the corresponding traditional cross-layer routing protocols.