NS多信道协议仿真现状研究

Multi-channel communication protocol has been a hot research area with the fast development of wireless communications. Although Network Simulator 2 (NS2) has been the dominate network simulation tool as an important way to research protocol, currently it does not provide native support for multi-channel simulation. However, researchers can modify and extend ns to serve the purpose because of its high extendibiliy. This paper first introduces the basic characteristics and structure of the Network Simulator (NS) and its MobileNode model for wireless network simulation, and analizes the informed researches on NS to simulate multi-channel protocol by indicating their design goal, implement way, structure of MobileNode model and suitable scenarios. Finally, an improvement proposal on these multi-channel extensions is proposed to apply ns to the future development of the multi-channel protocol and simulation.