摘要
对IEEE 802.11协议下移动自组网中节点的MAC层自私行为进行了研究,描述了自组网节点利用减少退避时间等方法占用媒体资源造成网络性能严重下降的问题。分析了节点自私行为对其退避时间、吞吐量、数据重传次数的影响,提出了一种基于退避时间、吞吐量、重传次数指标的节点自私行为检测方法,并提出了一种利用邻接节点信息表的节点自私度的检测和惩戒机制。实验证明以上方法能有效识别节点的自私行为,在一定程度上解决了节点自私行为问题。
The selfish behavior of the nodes at the MAC layer in mobile ad hoc network using IEEE 802.11 protocols is researched, and the serious degradation problem of networks performance is described, which is caused by the nodes occupying media resources in using the methods of decreasing their back-off time. The influences of selfish node behavior on the back-off time, throughput and retransmission times are analyzed, a method for detecting the selfish behavior of nodes based on the indicator of back-off time, throughput and retransmission times is proposed, and a detection and punishment mechanism for the selfish degree of nodes by using the information table of adjacent nodes is presented. The experiments show that this method can detect selfish node behavior effectively and solve the problem to a certain extent.
出处
《计算机时代》
2010年第3期13-15,共3页
Computer Era
基金
广东商学院自然科学基金项目(08YB52004)
