基于IEEE 802.16e的睡眠模式的研究

Research of the sleep mode based on IEEE 802.16e

IEEE 802.16 e介绍了两种睡眠模式来达到能量的有效利用,分别是睡眠模式Ⅰ和睡眠模式Ⅱ,睡眠模式Ⅰ使用二进制指数增长的睡眠周期大小,睡眠模式Ⅱ使用固定的睡眠周期大小。首先对两种睡眠模式的能量消耗和时延性能进行分析,然后引入马尔可夫判定过程,给出一种睡眠模式的选择算法,以满足对于能量消耗和时延的要求,从而达到一种在不同性能要求下的权衡,仿真结果给出了这种选择算法的性能特点。

The IEEE802, 16e standard introduces two types of sleep modes for energy-efficient operations： Sleep Mode Ⅰ based on binary-increasing sleep cycle size and Sleep Mode Ⅱ using constant sleep cycle size. Firstly an analysis of energy consumption and delay performance about two modes was given. Then a sleep mode selection algorithm to meet the requirement of energy consumption and delay performance by using Markov decision processes was made. The trade-offs between energy consumption and delay performance among different operational modes was met. Through the simulation the performance of this selection algorithm can be seen.