一种改进的HMRSVP方案  

A MODIFIED HMRSVP SCHEME

作　　者：叶敏华[1] 刘雨[1] 张惠民[1] 朱春梅[1] 

机构地区：[1]北京邮电大学信息工程学院,101信箱北京100876

出　　处：《电子与信息学报》2003年第9期1243-1249,共7页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(批准号 60072036)

摘　　要：介绍了RSVP与MRSVP,以及在Mobile IP中采用MRSVP实现QoS保障的机制。分析和比较了3种HMRSVP方案,特别是指针转发的HMRSVP方案,并提出一种改进的方案。在此方案中,若移动主机在同一个分层区域内移动,则利用它在移动时所具有的本地性,采用指针转发的HMRSVP方案;若移动主机进入新的分层区域,则要求它建立新的RSVP通路,开始新的指针转发过程。同时对本地化特性进行了讨论。对改进的方案在两种情况下分别进行了建模、分析、结果表明,改进的方案性能更加优越。This paper introduces RSVP, MRSVP and the QoS guarantee mechanism in mobile IP by utilizing the MRSVP. Three HMRSVP schemes are described and compared in detail, especially the HMRSVP with pointer forwarding. A modified one is proposed. In this scheme, MH in a hierarchical region uses pointer forwarding scheme, which can utilize the feature of movement locality. When it moves into a new region, it is required to update the RSVP path and begin the new pointer forwarding process. Also, the feature of locality is discussed thoroughly. The modified scheme is modeled and analyzed in two different cases. The results show that it has better performance.

关 键 词：QOS HMRSVP 指针转发 服务质量 MobileIP 

分 类 号：TN929.5[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程]