多网融合中WLAN发现机制的能耗分析  

Energy consumption analysis for WLAN discovery schemes in converged networks

作　　者：江俊锋[1] 曹志刚[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《通信学报》2008年第1期104-108,114,共6页Journal on Communications

基　　金：国家自然科学基金资助项目(60472027)~~

摘　　要：研究3GPP(third generation partnership project)蜂窝网络与WLAN(wireless local area network)融合的无线异构网络中WLAN发现机制的能耗问题,提出一种终端能耗分析模型,分析了基于寻呼的WLAN发现机制以及其他4种WLAN发现机制的能耗。理论分析和仿真结果表明:基于寻呼的WLAN发现机制能耗最小,终端始终处于扫描状态的机制能耗最大。结果还表明:终端仅在与WLAN重叠的蜂窝小区内进行周期扫描的机制,与终端在所有的区域中进行周期扫描的机制比较,二者能耗相当。The terminal energy consumption of WLAN discovery schemes was considered for wireless heterogeneous networks, which were the integration of 3GPP （third generation partnership project） cellular networks and WLAN （wireless local area network）. Utilizing the terminal energy consumption model proposed, the energy consumption of paging based WLAN discovery scheme and the other four WLAN discovery schemes was analyzed. Analysis results indicate that paging based scheme consumes least energy of all the schemes. The scheme that keeps the terminal periodically scanning in the cells with WLAN consumes the second least energy. It is also shown that the scheme that keeps the terminal periodic scanning in the cell with WLAN and that keeps the terminal periodic scanning in all zones consume comparable energy.

关 键 词：无线数据通信 无线异构网络 WLAN发现机制 能耗分析 半马尔科夫链 

分 类 号：TN919.72[电子电信—通信与信息系统]