计算机工程 ›› 2011, Vol. 37 ›› Issue (18): 115-117.doi: 10.3969/j.issn.1000-3428.2011.18.038

• 网络与通信 • 上一篇    下一篇

无线网络中需求驱动的动态频谱分配

王 力 1,2,3,易辉跃 1,2,3,陈 斌 4,胡宏林 1,2,3   

  1. (1. 中国科学院上海微系统与信息技术研究所,上海 200050;2. 中国科学院无线传感网与通信重点实验室,上海 200335; 3. 上海无线通信研究中心,上海 200335;4. 华为技术有限公司,广东 深圳 518219)
  • 收稿日期:2011-03-23 出版日期:2011-09-20 发布日期:2011-09-20
  • 作者简介:王 力(1986-),男,硕士研究生,主研方向:动态频谱分配;易辉跃,副研究员;陈 斌,博士;胡宏林,研究员、博士
  • 基金项目:

    国家科技重大专项基金资助项目(2009ZX03003-002, 2009 ZX03007-004, 2011ZX03001-007-03, 2008ZX03005-001);上海市政府间国际科技合作基金资助项目(10220712000);国家“863”计划基金资助重点项目(2009AA011805);上海市科委基金资助重大项目(10DJ 1400302)

Demand-driven Dynamic Spectrum Allocation in Wireless Networks

WANG Li 1,2,3, YI Hui-yue 1,2,3, CHEN Bin 4, HU Hong-lin 1,2,3   

  1. (1. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; 2. Key Laboratory of Wireless Sensor Network & Communication, Chinese Academy of Sciences, Shanghai 200335, China;3. Shanghai Research Center for Wireless Communications, Shanghai 200335, China; 4. Huawei Technologies Co., Ltd., Shenzhen 518219, China)
  • Received:2011-03-23 Online:2011-09-20 Published:2011-09-20

摘要: 研究无线网络中协同动态频谱接入模型下的动态频谱分配问题,在考虑基站频谱需求的基础上,将物理干扰模型下的动态频谱分配问题建模为一个非线性优化问题。通过将非线性优化问题转换为线性规划问题,提出一种无线网络中需求驱动的动态频谱分配算法,计算初始频谱分配,并应用迭代增强算法为节点添加多余信道。仿真结果表明,该算法在有效频谱利用率和平均满意度上都优于现有算法。

关键词: 协同动态频谱接入, 物理干扰模型, 无线网络, 线性规划

Abstract: This paper studies the dynamic spectrum allocation problem in wireless networks under the Coordinated Dynamic Spectrum Access(CDSA) model. Considering spectrum demands of base stations, it formulates spectrum allocation under physical interference models as a nonlinear optimization problem. It proposes a demand-driven dynamic spectrum allocation algorithm in wireless networks by transforming this nonlinear optimization problem into linear programming problem. The proposed algorithm computes initial spectrum allocation and then applies iterative enhancement. Simulation results show that the proposed algorithm outperforms the existing algorithms in effective spectrum utilization efficiency and in average satisfaction degree.

Key words: Coordinated Dynamic Spectrum Access(CDSA), physical interference model, wireless networks, linear programming

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