| 摘要: |
| 文章分析了以多属性决策理论中简单加权算法（SAW）为代表的普通切换算法负载对比呼叫到达率（CAR）滞后的特性，针对异构无线网络垂直切换负载滞后造成负载不均衡现象，首先，建立异构无线网络，使用时间序列建立（SARIMA）模型预测网络呼叫到达率，根据预测呼叫到达率，引导业务切换和超前转移业务带宽，形成改进的（TSAW）算法，仿真结果表明TSAW算法克服了SAW算法负载滞后特性，使网络负载均衡特性变好. |
| 关键词: 异构无线网络 负载均衡 时间序列 带宽调整 垂直切换 |
| DOI：10.3969/J.ISSN.100-5137.2017.02.015 |
| 分类号: |
| 基金项目: |
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| Load balancing scheme research on load lead transfer of heterogeneous wireless network |
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Shen Honglei, Zhou Xiaoping, Tian Jiayang, Wang Jiale
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College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China
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| Abstract: |
| This article analyzes the lag characteristic of call arrival rate(CAR) of general vertical handoff which is the representative of simple additive weighting(SAW) in multi-attribute decision theory.It aims at the load imbalance phenomenon caused by vertical handoff for heterogeneous wireless network.Firstly,we should build the universal mobile telecommunication system/wireless local areal network(UMTS/WLAN) heterogeneous wireless network.We can use the time series to make the model of seasonal autoregressive intergrated moving average(SARIMA) so that the Call Arrival Rate can be predicted.Then,according to the Call Arrival Rate,we can lead business handoff and transfer business bandwidth in advance.Therefore,the modified time series predict SAW(TSAW) is formed.The result shows that TSAW overcomes the load delay disadvantages of simple additive weighting(SAW) and makes the network Load balancing better. |
| Key words: heterogeneous wireless network load balance time series analysis bandwidth adjustment vertical handoff |
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