Simulation and Comparison about MAC Protocols Based on 802.11b

In this article, some main routing algorithm used in Ad Hoc network, such as DSR, DSDV, TORA and AODV are analyzed with the help of NS2 simulator. Firstly, performances of these four routing protocols are tested in NS2, and then draw a design of the routing protocol in Ad hoc network. Different routing protocols, which can be classified into two main categories – proactive and reactive, correspond to different scenarios. Among the four algorithms, AODV is superior to others in most scenarios. On the other hand, the performance including delay, drop and throughput of the MAC layer with different number and different packet size is tested. So the number of the nodes or the packet size should not be out of the capability when designing a new Ad hoc network. All the conclusions drawn from this article can be used further to develop and optimize routing protocol for Ad hoc network.