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QoS Support for IEEE 802.11 Wireless LAN

机译:QoS对IEEE 802.11无线局域网的支持

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摘要

In today's Internet, the emerging widespread use of real-time voice, audio, and video applications makes Quality of service (QoS) a key problem. Meanwhile, the Internet is getting heterogeneous due to the explosive evolution of wireless networks. QoS support in wireless networks is more challenging than in the wired networks since bandwidth is scarce, latency and bit error rate are high and characteristics of the wireless channel vary over time and space. The IEEE 802.11 standard is the most widely deployed wireless local area network (WLAN) infrastructure. However, it cannot provide QoS support for the increasing number of multimedia applications. Thus, a lot of research works have been carried out to enhance the QoS support in 802.11 networks. Recently, the IEEE working group has been working on a new QoS-enhanced standard, called IEEE 802.11e. This chapter describes all these research and standardization activities. We also show through simulations the performance of the upcoming 802.11e standard and discuss several adaptive mechanisms to enhance the performance of the upcoming 802.11e standard.
机译:在当今的Internet中,实时语音,音频和视频应用程序的广泛使用使服务质量(QoS)成为关键问题。同时,由于无线网络的爆炸性发展,互联网正变得异构。无线网络中的QoS支持比有线网络更具挑战性,因为带宽稀缺,等待时间和误码率很高,并且无线信道的特性会随时间和空间而变化。 IEEE 802.11标准是部署最广泛的无线局域网(WLAN)基础结构。但是,它不能为越来越多的多媒体应用程序提供QoS支持。因此,已经进行了许多研究工作以增强802.11网络中的QoS支持。最近,IEEE工作组一直在研究新的QoS增强标准,称为IEEE 802.11e。本章介绍所有这些研究和标准化活动。我们还将通过仿真演示即将推出的802.11e标准的性能,并讨论几种自适应机制来增强即将推出的802.11e标准的性能。

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