Ad Hoc网络基于多指标综合的网关优选方案

考虑移动自组网(MANET)与Internet互联的网络结构,针对网关选取的问题提出基于多指标综合的Ad Hoc网络网关优选算法,该算法综合考虑节点能量对于无线Ad Hoc网络的重要影响和域内网关间切换的延时和丢包,以及重选网关带来的巨大开销等问题,以移动节点到网关的跳数、网关负载、链路可靠性作为优选指标,按照简单加权算法计算备用网关的效用函数,以此进行选取.仿真结果表明,在一定的开销范围内,应用该算法实现了网关负载均衡,延长了网络的使用寿命,缩小了平均分组时延,实验结果也表明该算法优于以跳数和网关负载为网关选择和切换标准的方案,并且不会带来太多的控制开销.

The Gateway Optimization Program for Ad Hoc Networks Based on Multiple Indicators

Consider the network structure of the mobile ad hoc networks(MANET) with Internet connectivity,proposed gateway optimization algorithm based on multiple indicators comprehensive for Ad Hoc network gateway for gateway selection problem,the algorithm comprehensively consider the impact of node energy for Wireless Ad Hoc Networks and the latency and packet loss within domain gateway switch,and the enormous overhead for gateway re-election and other issues.Consider the number of hops of mobile node to the gateway,gateway load,link reliability as the preferred indicator,in accordance with simple weighting algorithm to calculate the utility function of the alternate gateway in order to make a selection.Simulation results show that within a certain range of overhead,the application of the algorithm achieved the gateway load balancing,extended the service life of the network,reduced the average packet delay,the results also show that the algorithm is superior to the number of hops and gateway load gateway selection and handover of the standard program,and will not bring too much control overhead.