摘要
IEEE802.16e标准是支持终端移动性的无线城域网接人标准。由于移动终端是由电池供电的,而休眠模式作为其必备功能,能有效管理其有限的电池容量,延长其单次充电使用时间。首先介绍了IEEE802.16e标准建议的睡眠模式,然后通过建立马尔可夫链模型对睡眠模式下的平均能量消耗及平均包延迟进行分析,最后NS2工具对分析结果进行NS2仿真和讨论。
The IEEE802.16e is a standard of emerging broadband wireless access system which supports the mobility. The mobile subscribers （MSS） are mainly powered by the batteries, so the sleep mode mechanism becomes an important component for the MSS which can effectively manage the limited energy, and prolong the using time of the once-charged batteries. This paper introduced the standardized sleep mode in IEEES02.16e, then it analyzed the average energy consumption and the average packet delay under sleep mode by building a semi-Markov chain, and gave the simulation results by NS2 at last.
出处
《信息技术》
2009年第7期159-162,共4页
Information Technology
