基于稳定分簇的移动自组织网络路由协议

移动自组织网络的动态拓扑特性给其分簇路由协议的设计带来了一定的挑战，而分簇算法作为分簇路由协议中重要的技术手段，如何建立一种有效稳定的分簇机制，对分簇路由协议的性能至关重要。本文在大规模网络环境下，提出一种稳定的分簇算法，并在此基础上提出一种分簇路由协议。为提高网络性能，该分簇路由协议簇间采用被动模式，簇内采用主动模式，并且各个分簇由簇首、网关、访客和普通簇节点组成。仿真结果表明:该分簇算法减少了簇的数量和簇成员在簇间的切换次数，提高了分簇的稳定性。相应的分簇路由协议较该类协议也降低了网络的平均端到端时延和平均路由开销，提高了数据包接收的成功率。 

Stable cluster-based routing protocol for mobile Ad Hoc networks

The dynamic topology of a mobile Ad Hoc network poses a real challenge in the design of clustering routing protocol. And as an essential technique of clustering routing protocol, clustering of nodes provides an efficient method for establishing a clustering structure in mobile Ad Hoc networks. In this paper, we designed a stable clustering algorithm and a corresponding clustering routing protocol for large-scale mobile Ad Hoc networks. Each cluster is composed of a clusterhead, several cluster gateway nodes, several cluster guest nodes and other cluster members. The proposed routing protocol uses proactive protocol between nodes within individual clusters and reactive protocol between clusters. Simulation results show that the proposed clustering algorithm improves the stability by decreasing the clusters' number and nodes' switch times between clusters. And the clustering routing protocol provides low average end-to-end delay, normalized routing overhead and high packet acceptance ratio compared with some existing routing protocols.