Design of MAC Protocol for Wireless Sensor Networks Based on Cross-Layer Optimization

For the fault of S-MAC protocol with adaptive listening in energy-consume unbalance between nodes, a Cross-layer optimization MAC protocol based on network fairness (BS-MAC) is proposed. In the new mechanism, add the new variable TS which records the number of how many times this node becomes virtue clusters' boundary, nodes sleep/listen adaptive through comparing with the size of TS; adjust the balance of energy-consume Cross-layer with the clustering algorithm added TS. Simulation statistics shows that BS-MAC not only increases the fairness of the network and the network lifetime, but also keeps the same energy-consume and delay with the S-MAC.