计算机工程与应用 ›› 2010, Vol. 46 ›› Issue (17): 113-116.DOI: 10.3778/j.issn.1002-8331.2010.17.032

• 网络、通信、安全 • 上一篇    下一篇

IEEE 802.16e系统中的软切换策略

朱诗威,张华熊,贾会玲   

  1. 浙江理工大学 信息电子学院,杭州 310018
  • 收稿日期:2008-12-04 修回日期:2009-02-27 出版日期:2010-06-11 发布日期:2010-06-11
  • 通讯作者: 朱诗威

Soft handover scheme for IEEE 802.16e system

ZHU Shi-wei,ZHANG Hua-xiong,JIA Hui-ling   

  1. College of Information and Electronics,Zhejiang Sci-Tech University,Hangzhou 310018,China
  • Received:2008-12-04 Revised:2009-02-27 Online:2010-06-11 Published:2010-06-11
  • Contact: ZHU Shi-wei

摘要: 切换是移动网络最重要的技术之一,直接影响着通信系统的整体性能。研究了IEEE 802.16e系统基于CINR(Carrier to Interference + Noise Ratio,载波干扰噪声比)的软切换机制,提出绝对门限和相对门限相结合的软切换触发和判决算法。通过仿真研究了各参数对平均切换次数、切换损耗概率和网络资源利用率的影响,并在这些系统性能之间寻求折中。

关键词: IEEE 802.16e, 载波干扰噪声比, 服务质量, 快速基站转换, 宏分集切换, 软切换

Abstract: The handover algorithms employed in a wireless mobile network have a significant impact on overall network performance.A soft handover algorithm is developed based on Carrier to Interference + Noise Ratio(CINR) for IEEE 802.16e system with both absolute threshold and relative threshold.System performances such as average number of handovers,handover outage probability and network resource utilization are studied by computer simulation.

Key words: IEEE 802.16e, Carrier to Interference + Noise Ratio(CINR), quality of service, Fast Base Station Switching(FBSS), Macro-Diversity Handoff(MDHO), soft handoff

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