An Collision Solutions Mechanism in opportunistic routing in wireless mesh networks

Abstract

This article describes a new collision solutions mechanism for Collision Solutions Mechanism in Opportunistic Routing, named CSMOR, in wireless networks. The mechanism encourages the senders' signals to be interfered with each other in Opportunistic Routing. When two or more signals are transmited at the same time, the packets might be conflicted and interfered. In the mechanism, the nodes can decode the interfered signal and get the original packets. So, the mechanism of CSMOR encourages the sender to transmit data at the same time, the receiver can use network layer information to reconstruct the interfered signals, and decode the signal they need from the package. Therefore, CSMOR avoid the back-off time and the accuracy of received packets has a significant improvement. This mechanism could minimize the end-to-end delay, increase the network throughput. With the data packets flow increasing, the gain of the mechanism is also enhanced. Theoretical analysis and simulation results show that CSMOR improves the performance significantly in terms of the less end-to-end delay, the greater throughput, compared with the classic Opportunistic Routing ExOR and MORE.