北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2009, Vol. 32 ›› Issue (5): 20-23.doi: 10.13190/jbupt.200905.20.lixj

• 论文 • 上一篇    下一篇

基于认知的异构无线网络信道借用策略

李希金;纪红   

  1. (泛网无线通信教育部重点实验室(北京邮电大学), 北京 100876)
  • 收稿日期:2009-02-19 修回日期:2009-04-13 出版日期:2009-10-28 发布日期:2009-10-28
  • 通讯作者: 李希金

Cognitive Radio Based Channel Borrowing Scheme for Heterogeneous Wireless Networks

LI Xi-jin,JI Hong   

  1. (Key Laboratory of Universal Wireless Communication (Beijing University of Posts and Telecommunications), Ministry of Education, Beijing 100876, China)
  • Received:2009-02-19 Revised:2009-04-13 Online:2009-10-28 Published:2009-10-28

摘要:

为解决频谱资源日益紧张的问题,基于IEEE802 11无线局域网(WLAN)和时分同步码分
多址(TD-SCDMA)技术构建的异构网络模型,考虑了异构无线网络下信道借用的条件,
提出了一种新的基于预测的信道垂直借用方案及其算法. 该算法在借鉴信道水平借用策略的基础上,引入信道预留机制并增加了信道借用预测算法. 仿真结果表明,该方案可有效降低呼叫
阻塞率,改善系统性能.

关键词: 异构无线网络, 信道分配, 信道借用, 呼叫阻塞率

Abstract:

A prediction algorithm based channel borrowing scheme on heterogeneous wireless network model composed of IEEE802.11 wireless local area network(WLAN) and time division-synchronous code division multiple access(TD-SCDMA)is proposed to solve the problem of spectrum shortage. The scheme refers to current horizontal channel borrowing strategy and proposes a channel reserved mechanism with channel borrowing prediction algorithm. Performance simulation shows that this scheme can efficiently decrease blocking probability and improve system performance.

Key words: heterogeneous wireless network, channel allocation, channel borrowing, blocking probability