Performance Analysis of Multi-Channel MAC Protocols in Multi-Hop Ad Hoc Networks

2010 IEEE Global Telecommunications Conference GLOBECOM 2010 Pub Date : 2010-12-01 DOI:10.1109/GLOCOM.2010.5683609

L. Le

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引用次数: 5

Abstract

In recent years, multi-channel MACs have attracted considerable attention in wireless networking research. Motivation for research into multi-channel MACs is their potential to increase the capacity of wireless ad hoc networks by exploiting multiple orthogonal frequency bands. This potential has been confirmed by several simulation studies that reported promising results for multi-channel MACs. However, the analytical performance of these protocols is not well understood. In this work, we present an analytical framework for modeling the performance multi-channel MACs in multi-hop networks. We employ our framework to investigate the performance of three representative multi channel MACs: Asynchronous Multichannel Coordination Protocol (AMCP), Multi-Channel MAC (MMAC), and Slotted Seeded Channel Hopping (SSCH). The important findings of our analysis are: (1) SSCH outperforms AMCP and MMAC in both 802.11b and 802.11a scenario, (2) AMCP performs worse than MMAC in 802.11b because the overhead of AMCP's control channel is higher than that of MMAC's control interval, and (3) the overhead of AMCP's control channel becomes negligible in an 802.11a scenario and is outweighed by that of MMAC's control interval. For this reason, AMCP delivers better performance than MMAC in 802.11a scenario.

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多跳Ad Hoc网络中多通道MAC协议的性能分析

近年来，多通道mac在无线网络研究中受到了广泛的关注。研究多通道mac的动机是它们利用多个正交频带来增加无线自组织网络容量的潜力。这种潜力已经被一些模拟研究证实，这些研究报告了多通道mac的有希望的结果。然而，这些协议的分析性能还没有得到很好的理解。在这项工作中，我们提出了一个用于多跳网络中多通道mac性能建模的分析框架。我们使用我们的框架来研究三种代表性的多通道MAC的性能:异步多通道协调协议(AMCP)，多通道MAC (MMAC)和开槽种子信道跳(SSCH)。我们分析的重要发现是:(1)SSCH在802.11b和802.11a场景中都优于AMCP和MMAC; (2) AMCP在802.11b场景中的表现不如MMAC，因为AMCP的控制通道的开销高于MMAC的控制间隔;(3)AMCP的控制通道的开销在802.11a场景中可以忽略不计，而被MMAC的控制间隔所抵消。因此，在802.11a场景中，AMCP提供比MMAC更好的性能。

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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2010 IEEE Global Telecommunications Conference GLOBECOM 2010

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