Context-aware Mobile Internet Architecture

我们的研究目标是开发一个无缝的移动的网络平台，在不久的将来的环境中，各种和大量的内容和计算资源分布在任何地方，他们通过互联网连接通过多种类型的无线和有线链路。在这种环境下，虽然存在提供创新应用和服务的潜在能力，但由于当前有关移动的Internet的技术和研究主要集中在终端的移动性上，保持移动的终端与Internet的连通性，因此还没有一个灵活使用这些资源的框架，如根据用户上下文选择最佳资源和动态切换资源。为了开发上述平台，我们首先设计了会话层移动性支持机制。它使我们能够无缝地切换资源，即使我们已经开始通信。该机制引入了会话层标识符，而不是在流行的终端移动性中采用的网络层标识符。除了移动性的支持，我们开发了一个系统，可以假设用户的上下文从各种信息。所开发的系统包括无线链路质量监视工具，存在组成工具，和室内位置测量工具。最后，我们结合这两个系统在同一个测试床网络，评估我们的上下文感知无缝移动的网络平台，并显示它的效率和实用性。

Our research target is to develop a seamless mobile networking platform for the near future environment in which various and huge amount of contents and computing resources are distributed everywhere and they are connected via the Internet through many types of wireless and wired links. In this environment, although there are potential ability to provide innovative applications and services, there are no framework for use these resources flexible, such as choosing the best resources and switching the resources dynamically according to users' context, because the current technologies and researches about mobile Internet is focusing on terminal mobility, keeping connectivity of mobile terminal to the Internet. In order to develop the above platform, first, we designed session layer mobility support mechanism. It enables us to switch the resources seamlessly even when we have already started communication. This mechanism introduces session layer identifiers instead of network layer identifier that is adopted in popular terminal mobility. In addition to the mobility support, we developed a system that can suppose user's context from various kind of information. The developed system consists of wireless link quality watching tool, presence composition tool, and indoor location measurement tool. Finally, we combined these two systems together on the same test-bed network, evaluated our context-aware seamless mobile networking platform, and showed the efficiency and usefulness of it.