MACAW : A Media Protocol for Wireless LAN's
MACAW : A Media Protocol for Wireless LAN's
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MACAW：无线 LAN 的媒体协议
DOI：
10.1145/1544012.1544040
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发表时间：
1994
影响因子：
7.9
通讯作者：
V. Bharghavan
中科院分区：
文献类型：
--
作者：
V. Bharghavan
我们提出了一个时分复用（TDM）MAC协议的设计，实施和评估多跳无线网状网络使用可编程的无线平台。在多跳无线网络中，假设TDM MAC协议是理想的，那么多跳无线网络的最优调度算法已经得到了广泛的研究。然而，设计和实现这样一个协议的问题还没有得到应有的重视。我们介绍了一个设计框架，解决了构成这个问题的三个主要挑战：（i）在给定无线平台的情况下如何校准和优化TDM MAC协议参数，（ii）如何以高精度、最小开销以及最重要的有限延迟实现网络范围的同步，以及（iii）如何使用最少的硬件资源将同步算法与TDM MAC协议状态机集成。我们应用我们的设计框架，我们的平台和评估所产生的TDM MAC协议，通过控制实验中的无线网状测试床。结果表明，该协议的能力，提供公平和优雅的性能下降下的数据包丢失和多跳流量模式，出现在网状网络部署。
We present the design, implementation, and evaluation of a Time Division Multiplex (TDM) MAC protocol for multi-hop wireless mesh networks using a programmable wireless platform. Extensive research has been devoted to optimal scheduling algorithms for multi-hop wireless networks assuming a perfect TDM MAC protocol. However, the problem of designing and implementing such a protocol has not received due attention. We introduce a design framework that addresses the three main challenges that comprise this problem: (i) How to calibrate and optimize the TDM MAC protocol parameters given a wireless platform, (ii) how to achieve network-wide synchronization with high accuracy, minimal overhead, and most importantly, bounded delay, and (iii) how to integrate the synchronization algorithm with the TDM MAC protocol state machine using minimal hardware resources. We apply our design framework to our platform and evaluate the resulting TDM MAC protocol through controlled experiments in a wireless mesh testbed. The results demonstrate the protocol's ability to provide fairness and graceful performance degradation under packet losses and multi-hop traffic patterns that arise in mesh network deployments.