基于WIMAX网络的IEEE802.16e PSC TypeⅡ休眠机制  

Sleep mode operation for IEEE 802.16e PSC Type Ⅱ based WIMAX network

作　　者：薛建彬[1] 袁占亭[1] 陈海燕[1] 曹明华[1] 贾科军[1] 

机构地区：[1]兰州理工大学计算机与通信学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2009年第1期94-98,共5页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(30670529);"十一五"国家科技支撑计划项目(2006BAF01A21);甘肃省自然科学基金(2008GS00557)

摘　　要：针对宽带移动通信中移动站短时间休眠带来的能量效率下降问题,研究IEEE 802.16e休眠模式的节能机制.为了保证实时性的同时降低能量消耗,提出一种动态调整时间门限的方案,通过设立动态检测时间并启发式调整休眠时间建立的休眠模式的马尔可夫链分析模型,分析该方案对能量效率和数据包延时的影响.通过NS2仿真验证所提动态算法比标准中的能量效率获得明显提高.Aimed at the problem of energy efficiency drop in broad band wireless communication with the short-time sleep, the energy-saving mechanism of the sleep operation mode was investigated for IEEE 802. 16e. A dynamic algorithmic scheme for tuning the time thresholdwas presented in order to guarantee the realtime ability and, in the same time decrease energy consumption. By means of establishing dynamic check-time and dormant-mode Markov chain model on the basis of heuristic dormant time tuning, the influence of the latter on the energy efficiency and mean access delay of data packet. NS2 simulation result showed that, by using the dynamic algorithm proposed, a remarkable gain in energy efficiency could be achieved compared to that stipulated in the standards.

关 键 词：休眠窗口 检测时间 能量效率 平均延时 节能机制 

分 类 号：TN915.04[电子电信—通信与信息系统]