Abstract: In micro mobility/wireless network environment, there are some real-time applications that are sensitive to delay. A step-by-step resource-reservation scheme for micro-mobility gives attention to the delay of RSVP handoff and the usage of network. The scheme updates route and reserves its resource in order to minimize the delay of RSVP handoff. After resource reservation of the updated route is accomplished, the data transmission of real-time application is temporarily resumed. During the data transmission, the temporary route is optimized in order to minimize the usage of link of the reserving route. As soon as the optimum route of RSVP is established, the data transmission is shifted from the temporary route to the optimum route, and the temporary route is torn down. After analyzing performance of the scheme, it is shown that the delay of RSVP handoff and the usage of network are synchronously improved.

Key words: step-by-step, micro-mobility, resource reservation, performance

摘要： 在微移动/无线环境下，基于分步策略的资源预留方案针对延迟抖动敏感的实时业务，兼顾移动主机RSVP切换的延迟时间和网络资源利用率，该方案以RSVP切换延迟为目标进行路径选择及资源预留，预留完成后在此路径上临时性地继续实时业务的数据传输，在数据传输期间对RSVP临时路径的网络资源利用率进行优化，并保持路径优化操作与数据分组的传输并行执行。RSVP优化路径一旦建成，就立刻将数据传输转移到此优化路径上，并释放以RSVP切换延迟为目标的临时预留路径。性能分析表明，在RSVP切换延迟和资源利用率上，基于分步策略的微移动资源预留方案均取得了优越的性能。

关键词: 分步, 微移动, 资源预留, 性能

CLC Number: 

• TP393.09