Misbehavior in Multi-Channel MAC Protocols

Yan Zhang

doi:10.1109/TDSC.2018.2819170

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Misbehavior in Multi-Channel MAC Protocols

2020-07-01

Yan Zhang *

Loukas Lazos

DOI：10.1109/TDSC.2018.2819170

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Abstract

En 中文

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.

Keywords:

Monitoring

Media Access Protocol

Throughput

Channel estimation

Wireless communication

Estimation

Wireless networks

media access control

multi channel

misbehavior

channel access

security

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