MAC design on real 802.11 devices: From exponential to Moderated Backoff

2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM) Pub Date : 2016-06-21 DOI:10.1109/WoWMoM.2016.7523503

I. Tinnirello, Menzo Wentink, D. Garlisi, Fabrizio Giuliano, G. Bianchi

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引用次数: 4

Abstract

In this paper we describe how a novel backoff mechanism called Moderated Backoff (MB), recently proposed as a standard extension for 802.11 networks, has been prototyped and experimentally validated on a commercial 802.11 card before being ratified. Indeed, for performance reasons, the time critical operations of MAC protocols, such as the backoff mechanism, are implemented into the card hardware/firmware and cannot be arbitrarily changed by third parties or by manufacturers only for experimental reasons. Our validation has been possible thanks to the availability of the so called Wireless MAC Processor (WMP), a prototype of a novel wireless card architecture in which MAC protocols can be programmed by using proper abstractions and a state-machine formal language, which enable easy modifications of legacy operations. Experimental results are in agreement with simulations and prove the effectiveness of Moderated Backoff, as well as the potentialities of the WMP platform.

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真实802.11设备上的MAC设计:从指数到适度后退

在本文中，我们描述了一种名为“适度后退”(MB)的新型后退机制，最近被提议作为802.11网络的标准扩展，在被批准之前如何在商用802.11卡上进行原型设计和实验验证。事实上，出于性能原因，MAC协议的时间关键操作，如回退机制，被实现到卡硬件/固件中，不能由第三方或制造商仅出于实验原因任意更改。由于所谓的无线MAC处理器(WMP)的可用性，我们的验证成为可能，WMP是一种新型无线网卡架构的原型，其中MAC协议可以通过使用适当的抽象和状态机形式语言进行编程，从而可以轻松修改遗留操作。实验结果与仿真结果一致，证明了该方法的有效性和WMP平台的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)

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