On Throughput Efficiency of Cooperative Opportunistic Routing in Multi-hop Wireless Mesh Networks

The architecture of Multi-hop wireless mesh networks (WMNs) provides widespread wireless access services. In recent years, much attention has been paid to the problem of the efficient transmission in multi-hop mesh networks, and the network performance with opportunistic routing. In multi-hop WMNs, the transmission stability interacted with packet loss ratio determines the transmission throughput. Recent studies have shown that the performance of higher throughput can be achieved while addressing both the transmission stability and packet loss problems. Although there are many papers dedicated to solve those problem, most of them have ignored the repeated transmission cost, or assumed that the forwarding list is used to transmit data. In this dissertation, we first discuss the methods to assess the minimum transmission cost of the current networks. Then, we propose a strategy which requires acknowledge signal to avoid duplicated transmission and packet loss. Moreover, we combine the above two mechanisms and propose a new cooperative opportunistic routing mechanism. Our experimental results are simulated and verified on OMNet++.