计算机工程 ›› 2008, Vol. 34 ›› Issue (14): 101-103.doi: 10.3969/j.issn.1000-3428.2008.14.036

• 网络与通信 • 上一篇    下一篇

基于IEEE802.11协议的分布式联合功率控制

龙 隆,戎蒙恬,刘 超   

  1. (上海交通大学电子工程系,上海 200240)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-07-20 发布日期:2008-07-20

Distributed Joint Power Control Based on IEEE802.11 Protocol

LONG Long, RONG Meng-tian, LIU Chao   

  1. (Department of Electronic and Engineering, Shanghai Jiaotong University, Shanghai 200240)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-07-20 Published:2008-07-20

摘要: 在基于802.11协议族的无线局域网中,不同于目前针对单一ap或多ap集中式功率控制方案,该文提出了针对临时大规模场景应用的分布式联合功率控制方案,一方面通过独立的预测和局部遍历获得目标功率等级,达到了减小ap间干扰的目的,提高网络整体吞吐量约3.1 Mb/s(未饱和),1.0 Mb/s(饱和),另一方面通过细粒度时隙调度增强ap对环境的适应能力。

关键词: 分布式功率控制, 时隙调度, 可变粒度

Abstract: Now the existent schemes to optimize the performance in wireless LAN is mainly based on centralized algorithms, which aim at family user. This paper proposes a distributed power control algorithm for large scale use. The scheme works based on prediction and sub-traverse, cooperating with a small granularity schedule which is called t-scale timeslot schedule. The simulation on NS2 shows that the scheme reduces the interference among access points and boosts the throughput of the whole network by 3.1 Mb/s(unsaturated) or 1.0 Mb/s(saturated), while the variety of the network can be responded timely.

Key words: distributed power control, timeslot schedule, t-scale granularity

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