多终端协同接入网络选择算法研究

Research on Access Network Selection Algorithm for Multi-Terminal Coordination

针对"虚拟终端"中多个终端设备协同工作时的接入网络选择问题,介绍了提供虚拟终端功能的网络结构;研究了多终端协同工作时业务的提供方法;分析了多终端同时接入时网络选择参数的变化情况;通过对已有多属性决策算法的改进,提出了多终端协同的接入网络选择(CANS)算法,实现了接入网络选择结果具有整体最优化。仿真结果表明,协同接入网络选择算法与随机接入网络选择法相比,业务吞吐量得到显著提高。

In view of the problem of access network selection with multi-terminal coordination in a ＂virtual terminal＂, this paper introduced the network structure with virtual terminal, researched the service provided method in case of multi-terminal coordination, analyzed the changes of access network selection parameters when several terminals access the same access network at the same time, improved the MADM （multiple attribute decision making） algorithm and put forward a multi-terminal coordination access network selection （CANS） algorithm. The algorithm makes the selected access network with best available bandwidth and system load, realizes the result of the access network selection with the overall optimization. Simulation shows that the service throughput is improved significantly when compares multi-terminal coordination access network selection algorithm with random selection algorithm.