基于分簇结构的移动自组织网络接入控制协议关键技术研究
Research on a media access control protocol of cluster-based MANET

摘要 提出了一种基于分簇结构的移动自组织网络（MANETs）接入控制协议（CM-MAC）.该协议主要适用于大规模多跳移动自组织网络，采用分簇技术将整个大规模网络分成多个簇，每个簇拥有不同的工作频段，各个簇之间互不干扰.簇内采用了动态时分多址协议，每个节点根据自身业务强度动态地占用网络资源，簇与簇之间通过网关节点实现跨簇通信.本文采用了OPNET Modeler进行网络建模和仿真，仿真结果表明：在大规模拓扑网络中， CM-MAC协议比标准USAP协议的吞吐量提升了约2.2倍，时隙复用率提升了约4倍，端到端延时降低了约3倍.
Abstract：CM-MAC protocol proposed is a Mobile Ad Hoc Networks (MANETs) medium access control(MAC) protocol based on clustering structure.The protocol is mainly applicable to large-scale multi-hop mobile ad hoc networks. It uses clustering technology to divide the entire large-scale network into many clusters. These clusters do not interfere with each other because each cluster has a different operating frequency band. In a cluster, a dynamic TDMA protocol is used and network resources are dynamically occupied by nodes according to their traffic lows.Inter-cluster communication is realized through gateway nodes. In the end we use OPNET Modeler software to model and simulate the CM-MAC protocol. The results show that, in the large-scale network, the CM-MAC protocol increases throughput at about 2.2 times, improves slot reuse rate at about 4 times, and reduces the end-to-end delay at about 3 times than the standard USAP protocol.