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首页> 外文期刊>IEICE Transactions on Communications >A Seamless Handoff Scheme with Access Point Load Balance for Real-Time Services Support in 802.11 Wireless LANs
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A Seamless Handoff Scheme with Access Point Load Balance for Real-Time Services Support in 802.11 Wireless LANs

机译：具有接入点负载平衡的无缝切换方案，可在802.11无线LAN中支持实时服务

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摘要

IEEE 802.11 wirelesses LANs (WLANs) have been rapidly deployed in enterprises, public areas, and households. Voice-over-IP (VoIP) and similar applications are now commonly used in mobile devices over wireless networks. Recent works have improved the quality of service (QoS) offering higher data rates to support various kinds of realtime applications. However, besides the need for higher data rates, seamless handoff and load balancing among APs are key issues that must be addressed in order to continue supporting real-time services across wireless LANs and providing fair services to all users. In this paper, we introduce a novel access point (AP) with two transceivers that improves network efficiency by supporting seamless handoff and traffic load balancing in a wireless network. In our proposed scheme, the novel AP uses the second transceiver to scan and find neighboring STAs in the transmission range and then sends the results to neighboring APs, which compare and analyze whether or not the STA should perform a handoff. The initial results from our simulations show that the novel AP module is more effective than the conventional scheme and a related work in terms of providing a handoff process with low latency and sharing traffic load with neighbor APs.
机译：IEEE 802.11无线局域网（WLAN）已快速部署在企业，公共区域和家庭中。 IP语音（VoIP）和类似的应用程序现在通常在无线网络上的移动设备中使用。最近的工作改善了服务质量（QoS），提供了更高的数据速率以支持各种实时应用程序。但是，除了需要更高的数据速率外，AP之间的无缝切换和负载平衡是必须解决的关键问题，以便继续支持跨无线LAN的实时服务并向所有用户提供公平的服务。在本文中，我们介绍了一种带有两个收发器的新型接入点（AP），它通过支持无线网络中的无缝切换和流量负载平衡来提高网络效率。在我们提出的方案中，新型AP使用第二个收发器扫描并找到传输范围内的相邻STA，然后将结果发送到相邻AP，后者比较并分析STA是否应执行切换。我们的模拟的初步结果表明，新颖的AP模块在提供低延迟的切换过程以及与相邻AP共享流量负载方面比传统方案和相关工作更有效。

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