【摘要】 针对移动自组织网络(mobile Ad hoc network,MANET)与Internet互联时的网关选择问题,提出一种基于Jelger算法的多因素网关选择算法来进行网关选择和切换。该算法综合考虑跳数、网关效益、通信成本等约束对网关选择的影响,在此基础上构建目标函数,引入网关选择度量——网关可用度(GUD)来完成网关的选择和切换。仿真结果表明,该算法能够有效改善Jelger算法引起的网关频繁切换问题和负载不均衡问题,减少网关切换次数,降低了传输时延和网络负载,提高了网络性能。更多还原

【Abstract】 According to the problem of gateway selection of mobile Ad hoc network and Internet,this paper put forward a multi-factors gateway selection algorithm based on Jelger algorithm.The algorithm comprehensively considered factors effecting on the gateway selection process,such as hop,gateway efficiency and communication cost.On the basis of above,it built objective function,and then introduced gateway selection metrics:GUD,completed gateway selection and switch.The simulation results show that the proposed algorithm can effectively improve the problems of gateway frequently switched and load imbalance caused by Jelger algorithm,reduce the gateway switching times,transmission delay and network load,improve the network performance.更多还原