Mobility and Resource Management for Multimedia Mobile Computing

在本提案中，我们处理多媒体移动计算中的两个核心问题，即移动性管理和连接许可。更具体地说，我们提出的问题是，基于微网络通信环境，如何在大规模访问的互联网（我们将网络的网络称为互联网）中有效地定位用户，以及如何限制在这种环境下的多媒体连接准入，以保证对已接受的连接的服务质量。我们的方法是基于用户移动配置文件（UMP）的思想。当用户在互联网上漫游时，系统会不断收集用户的移动和连接模式信息。该信息用于预测活动用户的未来位置，从而减少了搜索空间，从而减少了定位用户的成本。这是通过位置面积的动态计算来实现的。在我们的方法中，位置区域是根据每个移动设备定义的，并在用户在不同网络之间漫游时使用UMP“在飞行中”进行计算。为了使用户的移动性管理成本最小化，对位置面积进行了计算。此外，在UMP中嵌入的用户未来位置的统计知识可以预测资源利用情况，从而降低资源短缺的可能性。其结果是，多媒体连接可以通过更严格的服务质量（QoS）保证来支持。为了实现保证QoS的目标，我们采用了一个新的概念，称为Shadow Clique，它是给定用户在网络中的当前位置，用户未来位置的概率表示。事实上，影子集团是UMP的摘要，可以轻松快速地确定不同网络的未来资源需求。在我们的研究中，我们将使用分析和模拟工具解决以下问题：UMP信息报告和收集的最优策略使用UMP降低注册要求和用户位置成本将网络分组为寻呼组的方法，以降低受延迟约束的移动寻呼成本。使用UMP创建影子集团摘要5。利用影子集团概念预测未来网络资源利用很明显，由于这六个主题是高度相关的，密切的协作互动和持续的信息和结果交流对于这个项目的成功至关重要。要估计我们工作的潜在影响，必须设想未来互联网服务和流动应用程序的使用情况。这些是最近移动多媒体领域研究的主要内容。然而，在实现移动应用程序的广泛使用之前，如何管理如此大量的用户的移动性以及如何管理多媒体通信的资源是需要解决的根本问题。我们的建议是朝着这个方向迈出的重要一步。

Project URL: http://www.ee.gatech.edu/research/labs/bwn/projects/nsf http://www.ee.cornell.edu/~haas/nsf.html In this proposal, we deal with two central issues in Multimedia Mobile Computing, namely Mobility Management and Connection Admission. More specifically, we ask the questions of how to efficiently locate users within massively accessed internet (we refer to a network of networks as an internet), based on the micro-networking communication environment and how to limit the multimedia connection admission in such an environment, as to guarantee quality of service to already accepted connections. Our approach is based on the idea of User Mobility Profile (UMP). As a user roams within an internet, the system continuously collects information on the users' mobility and connection patterns. This information is used to anticipate the future location of the active users, thus, reduces the search space and, consequently, the cost of locating the user. This is achieved through the dynamic calculation of location area. In our approach, the location area is defined per mobile and is calculated, using the UMP, ``on the fly,'' as the user roams between different networks. Calculation of the location area is done as to minimize the user's mobility management cost. Furthermore, the statistical knowledge of users' future positions embedded within the UMP allows prediction of resource utilization and, thus, reduces the probability of resource shortage. The result is that multimedia connections can be supported with a much stricter Quality-of-Service (QoS) guarantees. To achieve the goal of guaranteed QoS, we employ a new concept, called the Shadow Clique, which is the representation of the probability of user's future locations, given its current position in the network. The Shadow Clique is, in fact, a digest of the UMP and allows easy and fast determination of the future resource requirements in different network s. In our research we will address the following issues using both analytical and simulation tools: 1. The optimal strategy for UMP information reporting and collection 2. The use of the UMP for reducing the registration requirements and the user location costs 3. Methods for grouping the networks into paging groups, as to reduce the mobile paging costs, subject to delay constraints 4. The use of the UMP to create the Shadow Clique digest 5. The use of the Shadow Clique concept to predict the future network resource utilization 6. The use of the Shadow Clique concept in the Connection Admission algorithm It is obvious that as the six topics are highly related, a close collaborative interaction and continuous exchange of information and results is essential for the success of this project. To estimate the potential impact of our work, one must envisage the future use of the Internet services and the mobile applications. These are responsible for much of the recent research in the Mobile Multimedia field. However, before a wide-spread use of the mobile applications can be realized, the fundamental questions of how to manage the mobility of such large volume of users and how to manage the resources for multimedia communication need to be addressed. Our proposal is a significant step in this direction.