计算机应用与软件2012，Vol.29Issue(12)：90-94,5.DOI:10.3969/j.issn.1000-386x.2012.12.026
蜂窝系统使用免费频段的方法研究
ON UNLICENSED SPECTRUM USAGE METHOD FOR CELLULAR COMMUNICATION SYSTEMS
摘要
Abstract
Cellular system sharing the unlicensed spectrum is one of the approaches to release the load of the crowded cellular band. First, we express the MAC mechanism of IEEE 802. 11. For the limitation of cellular system that it cannot fully utilise the spectrum resource when employing traditional carrier sensing mechanism to rival WLAN band, we propose an adaptive probability access (APA) method which can adjust the channel accessing probability based on maximised proportional fairness rule. This method can adjust the cellular accessing probability step by step to ensure that the whole system works at the maximum proportional fairness. Simulation results show that the proposed APA method has benefit on both the proportional fairness and total throughput than traditional mechanism.关键词
蜂窝系统/共享频段/无线局域网/动态频谱接入/比例公平Key words
Cellular system/Shared band/WLAN/Dynamic spectrum access/Proportional fairness分类
信息技术与安全科学引用本文复制引用
张宁,徐景,周斌,龙颖贤,彭焘..蜂窝系统使用免费频段的方法研究[J].计算机应用与软件,2012,29(12):90-94,5.基金项目
国家重大专项(2010ZX03003-002) （2010ZX03003-002）
国家国际科技合作项目(2010DFB10410) （2010DFB10410）
国家国际科技合作专项项目(S2012GR0072) （S2012GR0072）
中国科学院科研装备研制项目(Y2010045) （Y2010045）
上海市科委基础研究重点项目(10S11502600) （10S11502600）
上海市科技人才计划项目(浦江计划)(10PJ1411900). （浦江计划）
