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Misbehavior in Multi-Channel MAC Protocols

机译：多通道MAC协议中的不端行为

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摘要

Multi-channel MAC (MMAC) protocols are designed to coordinate multi-user access to several non-overlapping frequency bands. They are primarily tasked with the efficient and fair bandwidth utilization under a variety of traffic load conditions, presuming that terminals follow the protocol specifications. However, selfish terminals can manipulate the protocol parameters to gain an unfair share of the common bandwidth. The problem of selfish MAC-layer misbehavior is well-studied for single-channel MAC protocols, but little attention has been paid when channel access is coordinated across multiple channels. In this paper, we address the problem of MAC-layer misbehavior in the multi-channel domain. We identify misbehavior strategies for popular classes of MMAC protocols (split-phase and dedicated control channel MMACs) and evaluate their impact on network throughput and fairness. We show that selfish terminals can easily isolate frequency bands for exclusive use without violating the protocol specifications. We develop corresponding detection and mitigation strategies that greatly reduce the throughput gains due to misbehavior.
机译：多通道MAC（MMAC）协议旨在坐标对多个非重叠频段的多用户访问。它们主要是在各种交通负荷条件下有效和公平的带宽利用率，假设终端遵循协议规范。但是，自私的终端可以操纵协议参数以获得通用带宽的不公平份额。用于单通道MAC协议的自私MAC层不当行为的问题，但是在跨多个通道协调频道访问时，已经支付了很少的注意。在本文中，我们解决了多通道域中的MAC层错误问题问题。我们确定流行的MMAC协议（分裂和专用控制通道MMAC）的行为策略，并评估它们对网络吞吐量和公平性的影响。我们表明自私的终端可以轻松隔离频段，以便独家使用，而无需违反协议规范。我们制定了相应的检测和缓解策略，从而大大降低了由于不当行为的吞吐量增益。

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