信道竞争感知的多速率多跳无线网络时延路由测量

陈伟; 秦志光; 邓蔚; 聂鹏

doi:10.3969/j.issn.1001-0548.2012.05.005

信道竞争感知的多速率多跳无线网络时延路由测量

电子科技大学计算机科学与工程学院成都 611731

基金项目:

国家自然科学基金(60973118);国家863项目(2009AA01Z422)

详细信息

作者简介:
陈伟(1978-),男,博士生,主要从事无线网络路由、网络安全等方面的研究.

中图分类号: TN915
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- 文章访问数: 5315
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出版历程
- 收稿日期: 2010-09-01
- 修回日期: 2012-05-10
- 刊出日期: 2012-10-14

Channel Competition Aware Delay Routing Metric for Multi-Rate and Multi-Hop Wireless Networks

School of Computer Science & Engineering,University of Electronic Science and Technology of China Chengdu 611731

摘要

摘要: 根据IEEE802.11DCF基本访问模式,建立了无线链路传输模型和信道竞争模型,定义了链路和节点对共享信道的竞争度,提出了信道竞争感知的多速率多跳无线网络端到端时延路由测量CCAD。基于无线链路传输模型和信道竞争度计算链路及传输路径的时延,实现了对多速率多跳无线网络中链路的质量、传输速率以及信道竞争的测量。NS2仿真实验结果表明,CCAD的性能明显优ETX、ETT和MIC等现有的路由测量。
- 信道竞争 /
- 端到端时延 /
- 多跳无线网络 /
- 路由测量 /
- 链路传输模型
Abstract: Link quality, transmission rate of wireless links and channel competition among them determine the transmission capacity of multi-rate and multi-hop wireless networks together. This paper first builds a transmission mode and channel competition mode of wireless links, according to IEEE 802.11 DCF basic mode, and then gives the channel competition degree definitions both of wireless link and node, and finally proposes a channel competition aware end-to-end delay routing metric (CCAD) for multi-rate and multi-hop wireless networks. CCAD calculates the delays of wireless link and route, based on the transmission mode of wireless links and the channel competition degree of wireless nodes. As a result, link quality, transmission rate and channel competition are captured and measured together. NS2 simulation results show CCAD outperforms other metrics that have appeared in the literature, such as ETX, ETT and MIC.
- channel competition /
- end-to-end delay /
- multi-hop wireless networks /
- routing metric /
- transmission mode of link