基于交叉层设计的IEEE802.16e休眠机制  

Cross-layer Design-based Sleep Mode Operation in IEEE 802.16e

作　　者：薛建彬[1] 张爱华[2] 袁占亭[1] 贾科军[1] 

机构地区：[1]兰州理工大学计算机与通信学院,兰州730050 [2]兰州理工大学电气工程与信息工程学院,兰州730050

出　　处：《系统仿真学报》2010年第4期946-950,共5页Journal of System Simulation

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项目(0809RJZA016)

摘　　要：针对IEEE802.16e标准休眠模式中无线接入设备过多的监听下行信道问题,建议了一种交叉层设计方法,设置休眠参数的动态算法。将MAC层提取的休眠时间数值与物理层固定值相结合,形成休眠调度参数。通过建立马尔可夫链模型,分析了建议的算法能更多节省电池供电的移动台有限能量。NS2仿真实验验证了该算法比标准的节能性能最大可提高30%。To solve the problem of excessive listening interval in sleep mode of IEEE 802.16e,a dynamic algorithm based on cross-layer design was proposed to set the parameters with real-time sleep cycle from MAC layer and discrete time numerical value of physical layer. Then,a Markov chain model was proposed to analyze the energy efficiency and mean sojourn time of packets in the base station. The results prove that the proposed algorithm can achieve marked gain in power consumption compared to the traditional sleep mechanism with a Markov chain model. NS2 simulation results show that the proposed algorithm can improve the power consumption up to 30% compared to the IEEE 802.16e standard.

关 键 词：休眠模式机制 初始休眠窗口 能量效率 平均延时 监听窗口 

分 类 号：TN915.04[电子电信—通信与信息系统]