| 摘要: |
| TCP/IP协议本身只提供“Best-Effort”级别的服务,而对QoS支持很少.基于此，提出一种基于TCP/IP协议的自适应QoS协商机制,其基本思想是基于资源预留协议RSVP(resource reservation protocol).在提出QoS请求时进行QoS映射,然后启动适应性函数和资源管理函数进行协商,直到获得一组在当前资源状况下最佳的QoS指标为止.然后介绍了应用GQoS实现自适应QoS协商的基本步骤以及重要数据结构和函数.实验结果表明，应用该方法可以根据网络资源的变化，自适应地调整QoS参数. |
| 关键词: QoS QoS协商 自适应 GQoS TCP/IP |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(69983007);广东省自然科学基金资助项目(990034) |
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| Research and Implementation of QoS Mapping and Adaptive Negotiation Mechanism |
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TANG Yong,YANG Xue liang,OU Hai xiang,PENG Chong jia,TANG Na
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| Abstract: |
| TCP/IP protocol only provides services of ‘Best Effort’ level, lacking of the support of QoS. An adaptive QoS negotiation mechanism is proposed in this paper, which relies on RSVP (resource reservation protocol), carries out QoS mapping, starts the adaptability functions and the resource management functions while QoS accepting, and makes negotiate between both sides until a group of QoS values have been achieved. The basic steps of implementation by GQoS, as well as the important data structures and functions are introduced. The experimental results show that by applying the approach the QoS parameters can be adjusted adaptively when the network resources changed. |
| Key words: QoS QoS negotiation adaptability GQoS TCP/IP |
