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

中图分类号: 

• TP393