摘要
软件定义无线网络(SDWN)作为一种控制转发解耦合的架构,有利于快速获取全局拓扑,为无线接入点(AP)间无缝切换提供了便利。针对传统基于信号强度(RSSI)的AP选择算法可能会造成资源利用率低及负载不均衡问题,充分考虑流量负载对AP性能的影响,对传统Odin架构进行扩展,提出了一种软件定义无线网络下基于流量负载感知的AP间无缝切换算法。该算法考虑客户端收到的信号强度及AP的流量负载,可有效解决AP间负载不均衡问题。最后,在开源实验平台(Odin)应用此算法。实验表明,相比传统基于RSSI的切换算法,此算法有效提升了终端网络吞吐量。
Software defined wireless network(SDWN)decouples control plane and data plane as a new type of network architecture.Centralized control is beneficial to obtain global network topology quicklyand provides greater convenience for seamless handoff between APs.In view of the handoff between AP in software defined wireless network,this paper mainly researched in software defined wireless network client’s seamless handoff between AP.Considering the influence of traffic load for the AP performance,this paper proposed a seamless handoff algorithm between AP based on traffic load perception in software defined wireless network.This algorithm by considering the wireless client received signal strength(RSSI)and traffic load on the AP could effectively solve the problem of load imbalance between AP.Finally,applied it on the small test platform.The test shows that compared with the traditional handoff algorithm based on RSSI,this algorithm can effectively enhance the network throughput.
作者
李晓
杨建喜
池亚平
高聪
余宇舟
Li Xiao;Yang Jianxi;Chi Yaping;Gao Cong;Yu Yuzhou(School of Telecommunications Engineering,Xidian University,Xi’an 710071,China;Dept.of Communication Engineering,Beijing Electronics Science&Technology Institute,Beijing 100070,China)
出处
《计算机应用研究》
CSCD
北大核心
2018年第10期3037-3040,3047,共5页
Application Research of Computers
基金
国家发改委信息安全专项项目(发改办高技[2015]289号)
关键词
无线接入点
无缝切换
流量负载
软件定义无线网络
access point
seamless handoff
traffic load
software defined wireless network