支援多通道路由協定仿真的NS2通用模型

Abstract

多通道協定是無線網路中研究的熱點，協定包括網路層的多通道路由協定和資料鏈層中的多通道MAC協定。Network Simulator 2 NS2作為主流的網路仿真工具，其移動節點結構並不支援多通道通信模式。既有的支援多通道通信拓展模型對多通道路由的仿真的支持存在明顯的缺陷。本文提出一種靈活支援多通道到路由協定的多通道擴展模型－多介面多通道模型MCMIM。MCMIM通過對NS2的MNA擴展，實現路由實體和資料連結層實體的耦合控制和MAC和網路介面的動態關聯關係。MCMIM模型可以靈活地支援多通道路由協定；滿足網路介面動態分配切換通道的需求。通過仿真驗證了MCMIM模型支援多通道路由協定的能力和特性。Researching Multichannel protocols, including multichannel routing protocol at network layer and media access control MAC protocol of data link layer, are hot topics in wireless communication networks. Network Simulator 2 NS2 is a mandate simulation tool, however its Mobile Node Architecture MNA does not natively support multichannel model. Existing works that extend NS2 for multichannel communication have apparent problems in supporting multichannel simulation. So this paper proposes an multichannel simulation model, named as Multi-Channel Multi-Interface Model MCMIM, in which multichannel routing protocol are flexibly supported. By extending MNA of NS2, coherent controls of routing entities and data link layer ones, dynamic configuring the relation between MACs and network interfaces are realized. MCMIM model supports multichannel routing protocols in a flexible way while meeting the requirements of dynamic channel distribution and handover. Simulation results show that MCMIM model has the capability and characteristics to support multichannel routing protocols.