Toward QoS selection strategy based on MDP in heterogeneous networks

Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (16): 117-119.

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Toward QoS selection strategy based on MDP in heterogeneous networks

YANG Sen，TANG Hongbo，BAI Yi

National Digital Switching System Engnerring and Technological Research Center，Zhengzhou 450002，China

Received:1900-01-01 Revised:1900-01-01 Online:2011-06-01 Published:2011-06-01

异构无线网中面向QoS的马尔可夫选择策略

杨森，汤红波，柏溢

国家数字交换系统工程技术研究中心，郑州 450002

Abstract

Abstract:

A toward QoS selection algorithm based on Markov decision processes is proposed，which can adapt to the vertical handoff choice problem of mobile terminal in heterogeneous network environment.The reward function is defined correctly.And through combining the process of algorithm modeling with the characteristic of the heterogeneous network，an appropriate access network can be provided for the user.It is maximizing the total expected reward for a long time.The simulation results show that this algorithm can enhance the level of decision for user and improve the QoS of the services.

Key words: Markov decision processes, vertical handoff, heterogeneous network, Quality of Service

摘要： 针对移动终端在异构网络环境下，需要在垂直切换过程中进行网络选择的问题，提出一种面向QoS的马尔可夫选择决策算法，通过对算法模型合理化构建过程与异构环境特点的紧密结合、报酬函数的正确定义与求解，可以为用户选择合适的接入网络，最大程度地满足在异构网络环境中用户QoS的长期效益。仿真结果表明，该算法可以有效提高判决水平，改善业务的QoS。

关键词: 马尔可夫决策, 垂直切换, 异构网络, 服务质量（QoS）

YANG Sen，TANG Hongbo，BAI Yi. Toward QoS selection strategy based on MDP in heterogeneous networks[J]. Computer Engineering and Applications, 2011, 47(16): 117-119.

杨森，汤红波，柏溢. 异构无线网中面向QoS的马尔可夫选择策略[J]. 计算机工程与应用, 2011, 47(16): 117-119.

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Toward QoS selection strategy based on MDP in heterogeneous networks

异构无线网中面向QoS的马尔可夫选择策略

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