Mobility Management for Multimedia Mobile Networks

在过去的十年中，移动通信的部署是惊人的。移动通信和计算的结合产生了一种新的分布式网络，称为移动计算系统。多媒体移动网络是一种新的移动通信系统，它将使用户能够在任何时间、任何地点之间经济地传输任何形式的信息。移动管理，即如何对移动用户进行跟踪，是多媒体移动网络中最重要的问题之一。移动用户是使用汽车或手持电话或便携式计算机来发送和接收电话的用户。移动性管理有两种：静态方案和动态方案。在现有的移动网络中，采用静态方案。然而，在静态方案下，不能捕捉移动用户的移动模式。针对静态方案存在的问题，提出了动态位置管理方法。在动态方案中，根据移动终端的移动性和呼叫方式的变化动态确定位置区域的大小。在研究中，我们研究了静态和动态移动管理方法。针对多媒体移动网络，提出了最优动态移动性管理方法。其他重要贡献是首次为具有真实网络架构的多媒体移动网络的动态和静态移动方法的性能研究建立了新的分析模型。第三，为多媒体移动网络的移动性管理提出了有效的数据库管理方法。此外，我们认为多媒体移动网络是分布式/并行系统的扩展。许多与分布式和高性能并行系统相关的工作已经开展。

Over the last decade, deployment of mobile communications has been phenomenal. The integration of mobile communications and computing results in a new distributed network, referred to as a mobile computing system. Multimedia mobile networks are new mobile communication systems which will enable users to economically transfer any form of information between any desired locations at any time.Mobility management, i.e., how to track the mobile users that move from place to place is one of the most important issues in multimedia mobile networks. The mobile users are the subscribers that use either the automobile or hand held telephones or portable computers to send and receive calls.There are two kinds of mobility managements : static schemes and dynamic schemes. In the existing mobile networks, the static schemes are used. Under the static schemes, however, cannot catch the moving patterns of mobile users.Dynamic location management methods are proposed for dealing with the problems of static schemes. In dynamic schemes, the size of a location area is determined dynamically according to the changes of mobility and calling patterns of mobile terminals.In the research, we study both the static and dynamic mobility management methods. We have proposed the optimal dynamic mobility management method for the multimedia mobile networks. Other important contribution is the novel analytic model firstly established for the performance study of dynamic and static mobility methods for multimedia mobile networks with real network architectures. The third contribution is the proposed effective database management method for the mobility management in multimedia mobile networks.Furthermore, we consider the multimedia mobile networks as an extension to distributed/parallel systems. Many works related to distributed and high-performance parallel systems have been conducted.