Backoff algorithm of dynamic threshold and ridge function in Ad hoc networks
Ad hoc网络中动态阈值岭型函数退避算法*

MAC layer used IEEE 802.11 DCF as the access mechanism to solve the collision problems in Ad hoc networks. In order to find a good solution to congestion situation under high load network, it added the dynamic threshold and ridge function into the backoff algorithm to reduce the probability of data conflict. By using of NS2 network simulation, simulation results show that the improved backoff algorithm would improve network performance in heavy-load network, about 20%. After optimization the delay, throughput and fairness are all improved significantly in network.