移动IPv6技术中F-HMIPv6结合RSVP的应用研究

Application on Combining RSVP and F-HMIPv6 in Mobile IPv6 Technology

在讨论层次移动IPv6的快速切换技术(F-HMIPv6)基础上,分析了如何在移动环境下利用资源预留协议(RSVP)提供满意的网络应用服务质量(QoS)。提出了一种在F-HMIPv6中结合扩展的RSVP的新的应用方案。方案是在对RSVP协议进行扩展的基础上,把扩展的消息选项附加到F-HMIPv6的快速切换过程中。这样就可以实现在快速切换的过程中同时完成资源的提前预留。进一步降低了移动节点在网络切换过程中的切换延时,减少了丢包的可能性。同时针对无法建立提前资源预留的情况,提出一种指针链的方法,用以更好地解决切换过程中的丢包问题。

Based on discussing fast handover for HMIPv6 （F--HMIPv6）, it was analyzed how to make use of the RSVP to provide the satisfied quality of service（QoS） in mobile environment. A new application project combining RSVP and F- HMIPv6 was proposed. The project extends the RSVP first, and then adds the extendible news options to fast switch process of F-HMIPv6. So it can complete the advance resources reservation while implementing fast switch process, lower the switch postpone while the mobile nodes switch in mobile network, and decrease the possibility of losing packages. Aiming at the situation that the advance resources reservation cannot be established, a method that uses pointer chain was set forth, which can preferably resolve the problem of losing packages in switch process.