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arXiv cs/0411079cs.NI
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支持无线局域网实时的应用的带宽保证和移动性

Supporting Bandwidth Guarantee and Mobility for Real-Time Applications on Wireless LANs

Srikant Sharma, Kartik Gopalan, Ningning Zhu, Gang Peng, Pradipta De, Tzi-cker Chiueh

摘要:

基于IEEE 802.11的无线局域网的激增为创建若干无线和面向移动性的服务开辟了途径。这些服务中的大多数,如WLAN语音、媒体流等,产生延迟和带宽敏感的业务。这些流量需要具有一定QoS保证的不间断网络连接。不幸的是,没有足够的支持内置到这些无线局域网对QoS供应。此外,在这些无线LAN中由移动节点引起的网络层切换等待时间对于实时的【形】应用来说太高而不能正常工作。在本文中,我们描述了一个QoS机制,称为Rether,有效地支持无线局域网的带宽保证。Rether旨在支持当前的无线局域网技术,如802.11b和802.11a,并具有为802.11e等面向QoS的技术量身定制的特定功能。我们还描述了一个低延迟的切换机制,加快网络级切换提供实时的【形】应用程序的无缝移动性的额外优势。

英文摘要:

The proliferation of IEEE 802.11-based wireless LANs opens up avenues for creation of several tetherless and mobility oriented services. Most of these services, like voice over WLAN, media streaming etc., generate delay and bandwidth sensitive traffic. These traffic flows require undisrupted network connectivity with some QoS guarantees. Unfortunately, there is no adequate support built into these wireless LANs towards QoS provisioning. Further, the network layer handoff latency incurred by mobile nodes in these wireless LANs is too high for real-time applications to function properly. In this paper, we describe a QoS mechanism, called Rether, to effectively support bandwidth guarantee on wireless LANs. Rether is designed to support the current wireless LAN technologies like 802.11b and 802.11a with a specific capability of being tailored for QoS oriented technology like 802.11e. We also describe a low-latency handoff mechanism which expedites network level handoff to provide real-time applications with an added advantage of seamless mobility.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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