摘要： 无线媒体访问控制协议通常使用分布式竞争机制来共享无线信道。通过对IEEE 802.11协议的分布式协调功能机制进行修改，提出一种改进的退避算法，可实现对网络中的违规行为节点的有效检测，并通过惩罚机制加以纠正。仿真结果表明，该方法能够更有效地检测出无线网络中的违规行为，提高整个网络的吞吐量。

关键词: 无线网络, IEEE 802.11协议, 媒体访问控制协议, 违规行为, 分布式协调功能

Abstract: Wireless Medium Access Control(MAC) protocol usually uses distributed contention resolution mechanisms for sharing the wireless channel. This paper presents modifications to the Distributed Coordination Function(DCF) mechanism of IEEE 802.11 protocol, and it proposes an improved algorithm to implement the detection of misbehavior. The penalty measures are taken further to correct the misbehavior. Simulation results show that the ratio of correctly detecting the misbehavior is improved and the throughput of the whole networks is increased with the proposed mechanism.

Key words: wireless network, IEEE 802.11 protocol, Medium Access Control(MAC) protocol, misbehavior, Distributed Coordination Function (DCF)

中图分类号: 

• TN925