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| 无线Ad Hoc网络支持QoS的研究进展与展望 |
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李云1,2, 赵为粮1, 隆克平1, 吴诗其1
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1.重庆邮电学院,光互联网及无线信息网络研究中心,重庆,400065;2.电子科技大学,抗干扰国防重点实验室,四川,成都,610054
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| 摘要: |
| 无线ad hoc网络的应用环境以及与Internet的互连要求它必须提供一定的服务质量(QoS)保证,然而,无线信道固有的特点及节点移动造成网络拓扑的频繁变化,使得在无线ad hoc网络中支持QoS面临许多新的挑战.从无线ad hoc网络的QoS体系结构、QoS路由、QoS信令、支持业务区分和资源预留的介质访问控制协议这4个方面出发,对近年来国内外在该方向取得的研究成果作了全面的概括总结和比较分析,系统阐述了在无线ad hoc网络中支持QoS的问题,指出了亟待解决的问题和今后的研究方向. |
| 关键词: 无线ad hoc网络 服务质量 QoS体系结构 QoS路由 QoS信令 介质访问控制 |
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| 基金项目:Supported bythe National Science Foundation of China under Grant No.90304004(国家自然科学基金);the National High-Tech Research and Development Plan of China under Grant No.2003AA121540(国家高技术研究发展计划(863));the Science andTechnology Research Project of Chongqing Municipal Education Commission of China under Grant No.050310(重庆市教委科学技术研究基金) |
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| Development and Prospect on the Supported QoS in Wireless Ad Hoc Networks |
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LI Yun,ZHAO Wei-Liang,LONG Ke-Ping,WU Shi-Qi
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| Abstract: |
| The application environments and connection with the Internet require that wireless ad hoc networks should support Quality-of-Service (QoS). In a wireless ad hoc network, supporting quality-of-service is very difficult because of the inherent characteristics of wireless channel and the frequent change of network topology. This paper comprehensively summarizes and deeply analyzes the researches of recent years on the QoS architecture, QoS routing, QoS signaling, and media access control (MAC) mechanism that supports service differentiation and resource reservation in wireless ad hoc networks. Based on the analysis, this paper deeply discusses the problems that must be resolved to support QoS in wireless ad hoc networks, and points out the direction to the research in the future. |
| Key words: wireless ad hoc network quality of service QoS architecture QoS routing QoS signaling media access control |
