Adaptive power saving mechanisms for DCF in IEEE 802.11

被引：5
作者：
Zou, SH [1 ]
Wu, HT
Cheng, SD
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Networking & Switching Technol, Beijing 100876, Peoples R China
[2] Microsoft Res Asia 3F, Beijing Sigma Ctr, Beijing 100080, Peoples R China
来源：
MOBILE NETWORKS & APPLICATIONS | 2005年 / 10卷 / 05期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金; 中国博士后科学基金;
关键词：
wireless LAN; 802.11; DCF; energy efficient; power saving mechanism;
D O I：
10.1007/s11036-005-3369-4
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
Distributed Coordination Function (DCF) is the basis of IEEE 802.11 MAC sublayer. To improve energy efficiency, IEEE 802.11 has specified power saving mechanism (PSM) for DCF. However, the performance of PSM degrades seriously when load is heavy. In this paper we first analyze the reason of performance degradation, and then propose two adaptive mechanisms: PSM+ and fairPSM+. Numerous simulation results have shown that these two mechanisms can achieve high performance with heavy load and still get the same performance as PSM when load is light.
引用
收藏
页码：763 / 770
页数：8
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