Collaborative Research: A Hybrid Systems Approach to Resource Allocation for Multimedia Wireless Networks

本计画的目标是设计多媒体无线网路的联合功率控制、速率控制与基地台分配。多媒体网络的两个关键方面将被认为是在过去已经给予了简短的：数据和系统动态的要求。 该项目将考虑第四代直接序列码分多址（DS-CDMA）网络。 目标是根据每个应用使用所得到的QoS的能力来实现对每个移动的的下行链路发射功率、数据速率和代码的动态分配。 重点是网络范围的行为，因此将考虑网络范围的性能指标，在物理层和网络层之间进行联合优化。 三个主要的推力将被考虑：（a）使用多状态自动机混合系统模型作为一种新的工具来控制无线网络动态。(b)利用新定价理论设计与分析资源分配演算法。(c)设计和分析参数估计算法，以实现鲁棒的网络行为。第一个推力的目的是提供一个强大的工具，为离散和连续参数和切换成本的系统生成控制算法。 它将在本项目中用于控制功率、数据速率和带宽。 这方面的研究将扩展以前研究的混合系统的切换控制方法的维度。 第二个研究重点是联合功率控制、数据速率控制和基站分配算法的构建。本研究将以经济学理论为基础进行资源分配，并使用混合系统来实施。 最后的推力将解决许多资源分配方案对未知通信参数（如接收到的SINR）的依赖。 三名研究人员将一起工作：一名混合系统专家，一名资源分配专家和一名多用户扩频无线系统专家。

The goal of this project is the design of joint power control, rate control, and base station assignment for multimedia wireless networks. Two key aspects of the multimedia network will be considered that have been given short shrift in the past: the requirements of data and system dynamics. The project will consider 4th generation Direct-Sequence Code-Division Multiple-Access (DS-CDMA) networks. The goal is to implement dynamic assignment of downlink transmit power, data rate, and codes to each mobile in accordance with the ability of each application to use the resulting QoS. The focus is on network-wide behavior, and therefore network-wide performance measures will be considered, jointly optimized between physical and networking layers. Three main thrusts will be considered: (a) Use of multiple state automata hybrid systems models as a novel tool to control wireless network dynamics. (b) Design and analysis of resource allocation algorithms using novel pricing theory. (c) Design and analysis of parameter estimation algorithms to achieve robust network behavior. The first thrust is intended to provide a powerful tool for generating control algorithms for systems with both discrete and continuous parameters and switching costs. It will be used in this project for controlling power, data rate, and handoffs. The research in this area will extend the dimensionality of a previously studied hybrid systems approach to handoff control. The second research thrust is the construction of joint power control, data rate control, and base station assignment algorithms. This research will be based on economic theory for resource allocation, and implemented using hybrid systems. The final thrust will address the reliance of many resource allocation schemes upon unknown communication parameters such as received SINR. Three investigators will work together: an expert in hybrid systems, an expert in resource allocation, and an expert in multiuser spread spectrum wireless systems.