DHARMA:用于强健移动接入的分布式家庭代理

Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies. Pub Date : 2005-03-13 DOI:10.1109/INFCOM.2005.1498346

Yun Mao, Björn Knutsson, Honghui Lu, Jonathan M. Smith

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引用次数: 65

摘要

移动无线设备具有间歇性连接，有时是故意的。除了众所周知的路由效率低下和部署问题之外，这是传统移动IP的一个问题。DHARMA从一组分布式的本地代理中选择一个位置优化的实例，以最小化路由开销;使用PlanetLab覆盖网络进行集管理和优化。DHARMA的会话支持克服了主代理实例之间的转换和间歇性连接。会话层和覆盖网络之间的跨层信息共享用于在可用时利用多个无线链路。DHARMA原型在各种场景中支持间歇性连接的遗留TCP应用程序，并且在很大程度上可以跨主机操作系统移植。在200多个PlanetLab节点上部署DHARMA的实验表明，路由性能始终优于最佳情况下的移动IP。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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DHARMA: distributed home agent for robust mobile access

Mobile wireless devices have intermittent connectivity, sometimes intentional. This is a problem for conventional Mobile IP, beyond its well-known routing inefficiencies and deployment issues. DHARMA selects a location-optimized instance from a distributed set of home agents to minimize routing overheads; set management and optimization are done using the PlanetLab overlay network. DHARMA's session support overcomes both transitions between home agent instances and intermittent connectivity. Cross-layer information sharing between the session layer and the overlay network are used to exploit multiple wireless links when available. The DHARMA prototype supports intermittently connected legacy TCP applications in a variety of scenarios and is largely portable across host operating systems. Experiments with DHARMA deployed on more than 200 PlanetLab nodes demonstrate routing performance consistently better than that for best-case Mobile IP.

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Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies.

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