北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (4): 64-68.doi: 10.13190/jbupt.201004.64.huangx

• 论文 • 上一篇    下一篇

多信道无线多跳网络的跨层优化

黄鑫1,冯穗力3,柯峰4,庄宏成2   

  1. 1. 华南理工大学电子与信息学院
    2. 华为技术有限公司
    3. 广州华南理工大学电子与信息学院
    4. 华南理工大学
  • 收稿日期:2009-10-25 修回日期:2010-03-18 出版日期:2010-08-28 发布日期:2010-05-21
  • 通讯作者: 黄鑫 E-mail:huang.xin1@mail.scut.edu.cn
  • 基金资助:

    粤港关键领域重大基金资助项目(20060104-2)

CrossLayer Optimization in MultiChannel Wireless MultiHop Networks

  • Received:2009-10-25 Revised:2010-03-18 Online:2010-08-28 Published:2010-05-21

摘要:

为提高多信道无线多跳网络的效用,提出了一种实际可行的跨层优化机制.  利用该机制,每个节点在传输层使用联合设计算法分布式地调整流速率,在链路层根据所提出的分布式调度算法进行速率分配;网关节点使用所提出的干扰代价最小的信道分配算法集中式地分配信道.  通过在层间和节点间传递信息来协调这些层的工作,比集中式算法降低了复杂度,减少了信令开销.  仿真结果表明,该机制具有快速收敛性,且能保证业务流间的公平性;随着可用射频和信道数目的增加,业务流的速率和网络效用增加.

关键词: font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-ascii-font-family: 'Times New Roman'">无线多跳网络font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-hansi-font-family: 宋体, mso-fareast-font-family: 宋体" lang="EN-US">; , font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-ascii-font-family: 'Times New Roman'">跨层font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-hansi-font-family: 宋体, mso-fareast-font-family: 宋体" lang="EN-US">; , font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-ascii-font-family: 'Times New Roman'">网络效用最大化font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-hansi-font-family: 宋体, mso-fareast-font-family: 宋体" lang="EN-US">; , font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-ascii-font-family: 'Times New Roman'">多信道

Abstract:

In order to improve the utilities of the multichannel wireless multihop networks, a practical crosslayer optimization mechanism is proposed.  With the proposed mechanism, each node can use joint design algorithm to adjust flow rates distributedly in transport layer, and can use the proposed distributed scheduling algorithm to allocate rates for links in link layer.  The gateway uses the proposed minimal interference cost based channel allocation algorithm to allocate channels centralizedly.  Through transmitting informations among layers and nodes, the proposed mechanism can coordinate the operations of these layers, so the complexity is decreased, and the signaling overhead is reduced compared with the centralized algorithm.  Simulations show that the proposed mechanism can achieve fast convergence, and ensure fairness among flows.  With the increasing number of available radios and channels, the rates of flows and network utilities increase.

Key words: font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-hansi-font-family: 宋体, mso-fareast-font-family: 宋体" lang="EN-US">wireless multifont-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-ascii-font-family: 'Times New Roman'">font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-hansi-font-family: 宋体, mso-fareast-font-family: 宋体" lang="EN-US">hop networks; , crossfont-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-ascii-font-family: 'Times New Roman'">font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-hansi-font-family: 宋体, mso-fareast-font-family: 宋体" lang="EN-US">layer; , network utility maximization; , multifont-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-ascii-font-family: 'Times New Roman'">font-size: 10.5pt, mso-bidi-font-family: 宋体, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-bidi-font-size: 12.0pt, mso-hansi-font-family: 宋体, mso-fareast-font-family: 宋体" lang="EN-US">channel

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