QoS resource management for future broadband wireless access systems

未来的宽带无线蜂窝接入系统（BWCASs），如高速分组接入（HSPA）、UMTS长期演进（LTE）和全球微波接入互操作性（WiMAX），为利用对具有不同服务质量（QoS）要求的各种“内容丰富”的移动多媒体服务（例如，视频会议、音频和视频流、广播电视和在线游戏）的支持提供了无数的新机会。这是因为这些系统支持非常高的带宽，而以前只有有线连接才能使用。尽管支持如此高的带宽，但在满足用户多样化的QoS的同时使网络运营商的收益最大化仍然是这些系统面临的主要问题之一。如果没有有效的资源管理，网络运营商可能无法满足用户对多媒体业务日益增长的需求，从而可能遭受巨大的收入损失。本研究的目的是区分和设计有效的BWCAS网络资源管理技术。为此，我将考虑设计和开发高效的带宽管理框架，旨在支持具有不同QoS要求的不同用户的多类流量，支持类间和类内公平性，防止网络拥塞，最大化网络运营商的收入。此外，我将提出保证端到端QoS的体系结构，并评估提供具有QoS保证的服务的替代技术或方法方法。我还将为BWCASs设计拥堵定价解决方案，其中包括定义和推导定价函数，该函数除了考虑网络中的当前负载外，还考虑了不同无线服务的QoS。该项目的研究成果代表着朝着“随时随地、任何形式”的传播理念迈出了明确的一步。更重要的是，这些发现将使加拿大电信行业和企业受益，以一种既省时又节约成本的方式规划、实施和部署BWCAS网络。

Future Broadband Wireless Cellular-based Access Systems (BWCASs) such as High Speed Packet Access (HSPA), UMTS Long Term Evolution (LTE) and the Worldwide Interoperability for Microwave Access (WiMAX), pose a myriad of new opportunities for leveraging the support of a wide range of "content rich" mobile multimedia services (e.g., video conferencing, audio and video streaming, broadcast TV and online gaming) with diverse Quality of Service (QoS) requirements. This is due to the remarkably high bandwidth that is supported by these systems, which was previously only available to wireline connections. Despite the support for such high bandwidth, satisfying the diverse QoS of users while maximizing the revenues of network operators is still one of the major issues in these systems. Without efficient resource management, network operators may not be able to meet the increasing demand of users for multimedia services, and hence they may suffer great revenue loss. The objective of this research is to distinguish and devise effective resource management techniques for BWCAS networks. To this end, I will consider designing and developing efficient bandwidth management frameworks, which aim at supporting multiple classes of traffic with different users having different QoS requirements, supporting inter- and intra-class fairness, preventing network congestion and maximizing the network operator's revenues. Moreover, I will propose architectures for guaranteeing end-to-end QoS, and evaluate alternative technological or methodological approaches for delivering services with QoS guarantees. I shall also devise congestion pricing solutions for BWCASs, which includes defining and deriving pricing functions that consider the QoS of different wireless services in addition to the current load in the network. The research findings of this project represent a definite step towards meeting the "anywhere, anytime and any form" communication concept. More importantly, the findings will benefit the Canadian telecommunications industry and business with means to plan, implement and deploy BWCAS networks in a manner that is both time- and cost-efficient.