Provisioning and management of IP-Based multimedia mMobility services over heterogeneous broadband wireless networks

在加拿大电信行业内，我们正在见证蜂窝服务提供商和互联网服务提供商的融合，这些服务提供商旨在提供“始终最佳连接”（ABC）服务，以使用各种异构宽带有线和无线网络（后者包括3G蜂窝、WiFi WLAN、WiMax等）将多媒体通信和内容传送给不同的订户。在本建议中称为宽带无线网络（BWN）。这些不同网络的共同特征是使用通用因特网协议（IP）来促进网络互连，并且工业界正在部署IP多媒体子系统（IMS）技术来提供这些异构接入网络技术之间的互通并在BWN上扩展多媒体服务。当前不存在以统一方式管理订户对这些不同网络的接入的技术。多媒体应用的一个重要要求是传输网络需要提供适当级别的服务质量（QoS）支持，以确保可接受的接收质量。因此，另一个挑战是增强BWN技术以提供QoS支持，并增强多媒体编码/解码以抵消某些BWN提供的QoS的预期限制。这个项目的总体目标是开发技术，使ABC多媒体服务交付给用户通过异构BWN通过IMS互通。具体目标包括：（1）开发一个接入管理框架，用于全局管理单个用户的身份和业务配置文件，并促进ABC业务对多个BWN的有效接入;（2）开发用于H.264多媒体的可扩展和容错的多描述性编码/解码技术，并与高级传输层协议进行联合优化;（3）开发QoS支持技术，用于通过WiFi和WiMax网络以及通过IMS与核心IP网络交互工作的异构BWN的高效实时多媒体访问。 我们的努力将提供尖端技术和培养高素质的人才，以满足加拿大电信业的未来需求。

Within the Canadian telecommunications industry, we are witnessing the convergence of cellular service providers and Internet service providers aiming to provide an "always best connected" (ABC) service to deliver multimedia communications and contents to diverse subscribers using a variety of heterogeneous broadband wireline and wireless networks, the latter including 3G cellular, WiFi WLANs, WiMax, etc., referred as broadband wireless networks (BWNs) in this proposal. A common characteristic of these diverse networks is the use of the universal Internet Protocol (IP) to facilitate network interconnection, and industry is deploying IP multimedia subsystem (IMS) technology to provide interworking between these heterogeneous access network technologies and extend multimedia services over BWNs. Technologies do not currently exist to manage subscriber access to these diverse networks in a unified manner. An important requirement of multimedia applications is that the transport network needs to provide an appropriate level of quality of service (QoS) support to ensure acceptable reception quality. Therefore another challenge is to enhance BWN technologies for QoS support, and to enhance multimedia encoding/decoding to counteract the anticipated limit in QoS offered by some BWNs. The overall goal of this project is to develop technologies that enable delivery of ABC multimedia services to subscribers via heterogeneous BWNs interworked through an IMS. Specific objectives include the following: (1) Development of an access management framework to globally manage the identity and service profile of individual subscribers and facilitate efficient access to multiple BWNs for ABC service; (2) Development of scalable and error resilient multiple descriptive coding/decoding techniques for H.264 multimedia and joint optimization with advanced transport layer protocol; (3) Development of QoS support techniques for efficient real-time multimedia access over WiFi and WiMax networks and over heterogeneous BWNs interworked with a core-IP network through an IMS.  Our efforts will provide cutting edge technologies and train highly qualified personnel to satisfy the future needs of Canadian telecommunications industry.