J4 ›› 2014, Vol. 41 ›› Issue (3): 79-87.doi: 10.3969/j.issn.1001-2400.2014.03.012

• 研究论文 • 上一篇    下一篇

认知Ad Hoc网络多小区资源分配方案


  1. (西安电子科技大学 通信工程学院,陕西 西安  710071)
  • 收稿日期:2013-01-22 出版日期:2014-06-20 发布日期:2014-07-10
  • 通讯作者: 阔永红
  • 作者简介:阔永红(1967-),女,教授,博士,E-mail:yhkuo@mail.xidian.edu.cn.
  • 基金资助:


Resource allocation scheme for multi-cell cognitive radio Ad-Hoc networks

KUO Yonghong;YANG Jianghong;CHEN Jian   

  1. (School of Telecommunication Engineering, Xidian Univ., Xi'an  710071, China)
  • Received:2013-01-22 Online:2014-06-20 Published:2014-07-10
  • Contact: KUO Yonghong


在授权多小区频谱资源复用场景下,基于分级信道接入模型提出了一种认知Ad Hoc网络资源分配方案.授权小区将频谱资源进行区间复用,认知系统根据区域复用的不同划分可用频段,并在不同频段采取不同的接入方式;联合考虑链路传输需求及授权用户干扰保障设计传输效益因子,根据传输效益因子分配可用信道,运用拉格朗日对偶理论实现功率分配,并基于令牌环结构实现Ad Hoc链路局部信息交互.仿真表明,所提算法相对非复用认知场景系统容量可在相同指标下提升2%.

关键词: 认知Ad Hoc网络, 频率复用, 多小区场景, 资源分配, 令牌环


A resource allocation scheme for the cognitive radio Ad-Hoc network, which is collocated with the multi-cell primary radio network, is proposed based on the hierarchical channel access model. In this case, different primary cells can utilize some parts of the whole spectrums in terms of the reuse factor. Available bands are divided by the secondary system in line with the reused area and different access modes are developed according to the spectrum division. The proposed transmission profit parameter combining the transmission requirement with the interference constraint is used for channel allocation and the secondary system uses the Lagrange duality theory to implement power allocation. The Token Ring is introduced to realize local information exchange for the Ad-Hoc link. Simulation results show that, with the same performance metrics, the proposed algorithm can achieve 20% improvement on the overall throughput compared to the non-reuse-based cognitive scenario.

Key words: cognitive radio Ad-Hoc networks, frequency reuse, multi-cell scenarios, resource allocation, token ring