基于AP选择及自适应切换的负载均衡算法

吉林大学学报(信息科学版) ›› 2014, Vol. 32 ›› Issue (5): 498-503.

基于AP选择及自适应切换的负载均衡算法

申超, 孙丹丹, 张洪欣

北京邮电大学电子工程学院, 北京 100876

收稿日期:2014-04-14 出版日期:2014-09-26 发布日期:2014-12-26
作者简介:申超（1990—）, 男, 山东莱芜人, 北京邮电大学硕士研究生, 主要从事无线网络优化及生物医学信息的获取、传输与处理技术研究,（Tel）86-13051649294（E-mail）shenchao.bupt@gmail.com；通讯作者：孙丹丹(1978—), 女, 北京人, 北京邮电大学讲师, 主要从事Ad Hoc网络协作通信研究, （Tel）86-10-62282134（E-mail）sdd661@bupt.edu.cn。
基金资助:
国家自然科学基金资助项目（61202399）；中央高校基本科研业务费专项资金资助项目（2012RC0310）

Load-Balancing Algorithm Based on Access Point Selection and Adaptive Handoff in WLAN

SHEN Chao, SUN Dandan, ZHANG Hongxin

School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2014-04-14 Online:2014-09-26 Published:2014-12-26

摘要/Abstract

摘要：

针对无线局域网中无线接入点容易过载的问题, 提出一种基于无线接入点的选择及自适应切换的负载均衡算法。通过RSSI(Received Signal Strength Indication)值, MAC(Media Access Control)帧发送时延选择接入点, 同时对无线站点的突发流量做出积极应对措施, 用最小限度接入点的切换达到均衡整个网络负载的目的。该算法能明确选择信道空闲的无线接入点, 均衡接入点负载, 降低数据包的发送时延。与传统方法相比, 该算法使系统的总吞吐量提高13.6%。

关键词: 无线局域网, 负载均衡, 接入点选择

Abstract:

To resolve the problem of access point overload in WLAN (Wireless Local Area Network), a loadbalancing algorithm based on the access point selection and adaptive handoff is presented. In the algorithm, RSSI (Received Signal Strength Indication), MAC (Media Access Control) frame transmission delay and other f
actors are taken into consideration to select the access point. Meanwhile, it makes a positive response to the station of gusty traffic with minimal access point handoff to balance the entire network load. The algorithm can explicitly select the access point of the idle channel, and balance the load of access points. Then it effectively improves system throughput and reduces transmission delay of the packet. Compared with the traditional algorithms, it improves system throughput by 13.6%.

Key words: wireless local area network (WLAN), load balance, access point selection

中图分类号:

TP393.17

申超, 孙丹丹, 张洪欣. 基于AP选择及自适应切换的负载均衡算法[J]. 吉林大学学报(信息科学版), 2014, 32(5): 498-503.

SHEN Chao, SUN Dandan, ZHANG Hongxin. Load-Balancing Algorithm Based on Access Point Selection and Adaptive Handoff in WLAN[J]. Journal of Jilin University(Information Science Ed, 2014, 32(5): 498-503.