认知Ad Hoc网络仿真模型的设计与实现

针对认知Ad Hoc网络信道分配算法研究需要,提出了一种基于NS2的认知Ad Hoc的扩展模型.该模型是在原NS2节点模型上进行扩展;借鉴Czou思想,使用CM（channel management）模块对信道信息进行管理,在模块中实现信道的选择算法以及信道状态的更新;采用专用控制信道,用于交换控制信息和实现广播;节点根据信道选择规则选择数据信道,实现数据流的传输.仿真结果表明,设计方案合理,能满足基于数据流的信道分配算法研究的需求.

Design for cognitive radio Ad Hoc networks

For meeting the demand for research on the channel allocation algorithm of cognitive radio Ad Hoc networks,an extension model of cognitive radio Ad Hoc Networks,based on NS2,is proposed.It uses a CM（channel management） class,which learns from Czou＇s ideas,to manage channels information,to implement channel selection algorithm and to update channels states.It adopts dedicated common control channel,which is used for exchanging the control information and broadcasting.A node chooses a channel for data transmission according to the channel selection rules.The simulation results indicate that the system is reasonably designed,and it can satisfy study of the channel allocation algorithm based on data link.