Enabler for Next-Generation Mobile Video Applications

正在开发的高效视频编码(HEVC)标准是下一代视频压缩标准，与当前标准相比，由于预期的高压缩效率，该标准注定要给视频应用程序世界带来革命性的变化。然而，要将这一愿景变成现实，还需要大量的研究工作，因为HEVC仍处于早期标准化阶段，而关于网络化HEVC应用的研究很少。拟议的项目以移动HEVC视频交付为目标，采用一种新兴且具有挑战性的网络模式-多宿主移动网络，该网络正在移动网络，车上有许多移动用户(例如，公共交通工具上的乘客)。多宿主移动网络可以访问多个互补的无线网络，如3G及更高版本、WiFi和WiMAX，每个网络都提供不同的网络路径，通向管理整个移动网络的多宿主和移动性的板载多宿主移动路由器。与单个多宿主移动主机相比，多宿主移动网络的一个独特优势是移动用户的设备不需要多宿主或移动性感知。这种多宿主和移动性透明度大大降低了对用户设备的要求以及部署和运行此类系统的成本。拟议的研究将尝试实现多宿主移动网络中的移动用户与基础设施之间的双向实时视频传输，以支持用于商业、娱乐、安全、安全或其他目的的各种应用和服务。一个典型的应用场景是在公共交通环境中。在这种情况下，机上乘客会收到从HEVC媒体服务器流传输的基于HEVC的高质量下行链路视频。同时，实时的机上场景由摄像头捕捉，由HEVC编码器编码，并向上传输到监控站，用于公共安全和事件管理。预计通过本文的研究，移动用户的体验质量将比最新的H.264高级视频编码(AVC)和可伸缩视频编码(SVC)有显著的提高。建议的研究可以很容易地应用于一系列应用场景，如智能交通系统、紧急情况/紧急情况管理、远程医疗、个人区域网以及家庭和露营娱乐。因此，对本课题的理论和应用进行深入研究，具有很强的技术和经济意义。此外，与高通公司在JCT-VC会议上的共同贡献将使我们能够在移动HEVC应用程序中设定基准，并为HEVC的标准化做出贡献，这可能会产生长期的全球影响。传播和开发计划将向学术界以及与视频网络应用相关的公司(如该项目的另一个合作伙伴AIMS(INT)Ltd.)宣传研究成果，以开发潜在的商业产品开发。

The High Efficiency Video Coding (HEVC) standard under development is the next-generation video compression standard, which is destined to revolutionise the world of video applications thanks to the expected high compression efficiency compared with the current standard. Nevertheless, to turn the vision into reality, substantial research efforts are necessitated since HEVC is still at its early standardisation stage and there is little research on networked HEVC applications. The proposed project targets mobile HEVC video delivery in an emerging and challenging networking paradigm, multihomed mobile networks, which are moving networks with a number of mobile users onboard (e.g., passengers on public transport vehicles). A multihomed mobile network has access to multiple complementary wireless networks such as 3G and beyond, WiFi and WiMAX, each of which provides a different network path to onboard multihomed mobile routers managing the multihoming and the mobility of the whole moving network. Compared with individual multihomed mobile hosts, a distinctive advantage of a multihomed mobile network is that the mobile users' devices do not need being multihomed or mobility aware. Such multihoming and mobility transparency substantially reduces the requirements on users' devices and the costs for deploying and operating such a system. The proposed research will attempt to enable bi-directional real-time video transmission between the mobile users within a multihomed mobile network and the infrastructure to support various applications and services for business, entertainment, safety, security or other purposes. A typical application scenario is in the public transportation context. In this case, the onboard passengers receive high-quality downlink HEVC-based video streamed from an HEVC media server. Meanwhile, the live onboard scenes are captured by a camera, encoded by an HEVC encoder, and streamed upwards to a monitoring station for public security and incident management. It is expected that the mobile user's quality of experience (QoE) will be significantly improved compared with latest standards H.264 Advanced Video Coding (AVC) and Scalable Video Coding (SVC) through the proposed research. The proposed research can be easily adopted in a range of application scenarios such as intelligent transportation systems, emergency/urgency management, telemedicine, personal area networks, and home and camping entertainment. Therefore, there is a strong technological and economic need for further research into the theory and application of the proposed topic. Moreover, joint contributions with Qualcomm to the JCT-VC meetings will enable us to set benchmarks in mobile HEVC applications and contribute to the standardisation of HEVC, which can lead to a long-lasting global impact. Dissemination and exploitation plans will promote the research outcome to the academic community as well as companies (such as AIMS (INT) Ltd., another partner of the project) related to video networking applications to exploit potential commercial product development.