一种卫星异构网络环境下的网络选择算法  

A Network Selection Algorithm in Satellite Heterogeneous Network Environment

作　　者：徐力[1] 郭道省[1] 施春强[1] 

机构地区：[1]解放军理工大学通信工程学院,南京210007

出　　处：《无线通信技术》2012年第2期33-37,共5页Wireless Communication Technology

摘　　要：针对卫星通信网络的特点,提出了一种卫星异构网络环境下的网络选择策略。算法考虑不同业务类型的QoS需求、用户偏好、网络负载等因素,利用层次分析法确定影响网络选择的因素的权值,计算出每个可用网络的综合性能,确定最佳接入网络。仿真结果表明,该算法能够较好地适应卫星异构网络环境,提高网络选择的准确性和有效性。This paper proposes a network selection strategy for satellite heterogeneous network environment,based on the characteristics of satellite communication network.With different requirements of QoS,preference of user and network load considered,the algorithm calculates the weight of network attributes using analytic hierarchy process.Then the performance of each available network is counted,based on which the optimum network is selected.Simulation results show that the algorithm performs well in satellite heterogeneous network environment and improves the veracity and effectiveness of network selection.

关 键 词：卫星异构网络 层次分析法 权值 QOS 

分 类 号：TN92[电子电信—通信与信息系统]