A DISTRIBUTED COOPERATIVE MULTICAST SCHEDULING STRATEGY IN IEEE 802.11 NETWORKS  

作　　者：Song Liubin Xu Youyun Xie Wei Yu Jiang 

机构地区：[1]Institute of Communications Engineering, PLA University of Science and Technology, Nanjing 210007, China

出　　处：《Journal of Electronics(China)》2011年第3期334-340,共7页电子科学学刊（英文版）

基　　金：Supported by the National High Technology Research and Development Program of China(863 Program,No.2009-AAZ249);the Major Special Project of China(2010ZX03003-003-01)

摘　　要：In wireless multicast, some users may fail to receive data as a result of bad channel con-ditions. The throughput of traditional multicast strategy is constrained by the node with the worst channel condition. In this paper, we propose a distributed cooperative multicast scheduling strategy, in which, every user which has successfully received data can decide whether to retransmit data by sensing MNACK packets. The proposed scheme can achieve good throughput by exploiting multi-channel diversity across multiple users' cooperation. In addition, the constraint of power consumption is also considered. Simulation results show that our scheme can provide good throughput and fairness per-formance with the constraint of average system power consumption.In wireless multicast, some users may fail to receive data as a result of bad channel con-ditions. The throughput of traditional multicast strategy is constrained by the node with the worst channel condition. In this paper, we propose a distributed cooperative multicast scheduling strategy, in which, every user which has successfully received data can decide whether to retransmit data by sensing MNACK packets. The proposed scheme can achieve good throughput by exploiting multi-channel diversity across multiple users＇ cooperation. In addition, the constraint of power consumption is also considered. Simulation results show that our scheme can provide good throughput and fairness per-formance with the constraint of average system power consumption.

关 键 词：DISTRIBUTED COOPERATIVE MULTICAST IEEE 802.11 

分 类 号：TN92[电子电信—通信与信息系统]