摘要
终端接入的网络需要满足各类业务需求,对此提出了一种基于协同学的异构无线网络选择算法。该算法将终端网络选择看作一个系统化的问题,可选网络是一个复合系统,终端上运行的每一种业务都是一个子系统,依据熵的概念得到复合系统的熵值,熵值的大小反映了子系统之间的协同度,进而体现了网络的整体性能。仿真结果表明,在终端多业务的情况下,基于所提算法选择的网络业务QoS满意率达到了95%,比基于TOPSIS算法选择的网络业务QoS满意率提升了近4倍,能够很好地解决多业务终端网络选择问题。
A network selection algorithm based on synergetic for heterogeneous wireless network was proposed. The algorithm considered the network selection as a systematic problem. The optional network was a composite system and each kind of service running on the terminal was a subsystem. The entropy of the composite system was obtained ac- cording to the concept of entropy and it can reflected the degree of coordination among the subsystems, which in turn re- flected the overall performance of the network. The simulation results show that the QoS satisfaction rate of services based on the proposed algorithm is 95%, while the QoS satisfaction rate of services based on the TOPSIS algorithm is only 25%, and the performance of the former is improved by nearly four times, indicating that the problem of multi-service terminal network selection can be solved by the proposed algorithm.
出处
《电信科学》
北大核心
2017年第4期78-86,共9页
Telecommunications Science
基金
国家自然科学基金资助项目(No.61571234
No.61631020)
东南大学移动通信国家重点实验室开放研究基金资助课题(No.2015D10)~~
关键词
多业务终端
协同学
QoS满意率
网络选择
multi-service terminal, synergetic, QoS satisfaction rate, network selection
