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应用科学学报 ›› 2013, Vol. 31 ›› Issue (1): 21-26.doi: 10.3969/j.issn.0255-8297.2013.01.004

• 通信工程 • 上一篇    下一篇

改进的异构无线网络接入选择方法

石文孝， 李娜， 王继红   

  1. 吉林大学通信工程学院，长春130012
  • 收稿日期:2011-09-09 修回日期:2011-12-06 出版日期:2013-01-31 发布日期:2013-01-31
  • 作者简介:石文孝， 教授，博导，研究方向：现代通信理论与无线通信网络，E-mail: swx@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(No.60972028)资助

Improvement of Admission Selection for Heterogeneous Wireless Networks

SHI Wen-xiao, LI Na, WANG Ji-hong   

  1. College of Communication Engineering, Jilin University, Changchun 130012, China
  • Received:2011-09-09 Revised:2011-12-06 Online:2013-01-31 Published:2013-01-31

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1284

被引次数

5

摘要： 针对全IP业务，该文针对LTE/WiMAX异构无线网络提出一种改进的基于可变传输单元的接入选择算法. 算法利用二维资源单元计算系统容量，通过引入负载转移和可变传输单元，合理分配系统资源，更有效地为全IP业务服务. 利用排队理论建立系统四维马尔柯夫排队模型，分析并评价了系统性能. 仿真结果表明，与原有接
入选择算法相比，该算法更符合网络实际情况，在保证异构无线网络实时业务性能基础上，有效提高了非实时业务性能及系统总资源利用率.

关键词: 异构无线网络, 长期演进, WiMAX, 接入选择

Abstract: Abstract: For all IP services, we propose an improved alterable transmission units-based admission selection algorithm in LTE/WiMAX integrated heterogeneous wireless networks. The algorithm uses two-dimensional resource units to calculate system capacity. By introducing load transfer and alterable transmission units,system resources are distributed more reasonably, making the system more effective in serving all IP business.
The algorithm uses the queuing theory to establish a four-dimensional Markov queuing model, and analyze and evaluate the system performance. Simulation results show that, compared with the original admission selection algorithm, the proposed algorithm suits actual networks better, and can significantly reduce blocking rate of non-realtime services and increase the overall resource utilization of the system without affecting the realtime service performance.

Key words: heterogeneous wireless networks, long term evolution (LTE), WiMAX, admission selection

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