The Reserch in Management and Evaluation Methods for Mobile Multimedia Distributed Systems with High Security and High Reliability

在本课题研究期间，我们系统地对高安全、高可靠的移动多媒体分布式系统的管理和系统评估方法进行了广泛的研究。本文不仅从系统性能的角度出发，还从系统安全性和可靠性的角度出发，对分布式移动多媒体系统管理（移动性管理、资源管理等）和评价中的重要问题和问题进行了研究。为了支持广泛应用的蜂窝移动网络的移动性，提出了一种具有新网络结构的动态移动性管理方案。对该方案的性能和成本进行了定量研究。结果表明，该方案的性能优于目前广泛采用的方案。预计下一代移动多媒体网络将是基于IP （Internet Protocol）的网络。移动IP（即移动IPv4）和移动IPv6…更多的解决方案来支持互联网中的移动用户。我们研究了不同的流动性管理方法及其绩效评价与比较。在此基础上，我们针对移动IP和移动IPv6提出了新颖有效的移动性管理方法，为今后移动互联网的发展提供了有益的参考。近年来，由于移动自组网中出现了许多新的应用，对移动自组网的研究变得越来越重要。针对移动自组织网络中的安全通信方法，提出了一种本地化的密钥管理方案。绩效评估的方法是经过精心设计的。通过性能研究表明，所提方案优于现有方案。我们还研究了移动自组网的功率控制。针对移动自组织网络的媒体访问控制层，提出了新的有效的功率控制方法。研究了多媒体群通信的安全问题。提出了一些新的安全密钥管理方法，并对其性能进行了仔细的评估。下一代移动互联网增强分布式处理的研究正在进行中。少

During the period of this research project, we have extensively studied the management and system evaluation methods for mobile multimedia distributed systems with high security and high reliability in a systemically way. We take not only the system performance point of view, but also the system security and reliability point of view to study the important issues and problems of distributed mobile multimedia system management (mobility management, resource management, and so on) and evaluation as follows.1.We have proposed a new dynamic mobility management scheme with new network architecture for the mobility support for the widely used cellular mobile netwroks.. The performance and cost of the proposed scheme have been studied quantitatively. It is shown that the proposed one performs better than current widely used scheme.2.It is expected that the next generation mobile multimedia networks will be IP (Internet Protocol)-based networks. Mobile IP (i.e., Mobile IPv4) and Mobile IPv6 ar … More e solutions for support the mobile users in the Internet. We have studied different mobility management methods and their performance evaluation and comparison. Based on the careful study, we have proposed novel effective mobility management methods for the Mobile IP and Mobile IPv6, which will be useful to develop mobile Internet in the near future.3.The research on Mobile Ad Hoc networks becomes more and more important these days due to many new applications. We have proposed a localized key management scheme for secure communication method in mobile ad hoc networks. The way of doing performance evaluation has been carefully designed. It is shown through the performance study that the proposed scheme outperforms the existing scheme.4.We also have studied the power control for Mobile Ad Hoc networks. Specifically the new and effective power control methods have been proposed for the MAC (media access control) layer of Mobile Ad Hoc networks.5.The secure multimedia group communications have been studied. Some new secure key management methods have been proposed with careful performance evaluations.6.The research on enhanced distributed processing for next-generation mobile Internet is on going. Less