China Mobile – Migu
Song Xu, Technical Director of China Mobile - Migu Inc., co-chair of the Web & 5G Group of W3C Organization. Engaged in international standardization work and innovative application research of 5G immersive audio and video technology. Song’s technical career started in 1999 with Alcatel-Lucent in France, leading a multinational joint technology team to conduct software research and development for 2.5G GPRS and WAP protocol stacks. Song received a master's degree in management from the European Institute of Knowledge Economy Management (SKEMA Paris) and a bachelor's degree in computer science from the University of Electronic Science and Technology.
Track: Ultra HD Media Processing and Transmission
2019/12/14 09:30 - 17:55
Under the hybrid network of 5G, 4G and WiFi, how to achieve the multi-media transmission with low latency, high bandwidth and low cost? How to switch between many protocols? even automatic switch?
Topics in the track
This sharing will focus on the global standards, future trends and key landing factors of UHD.
Real-time remote medical imaging products and traditional imaging products have one thing in common: The essence of doctors' evaluation of images is the rigorous evaluation of image quality. For remote applications, this means higher requirements on distortion, jamming and delay of image transmission. In this presentation, we will introduce how the R&D team of MGI Imaging Products implements the quality assurance and network optimization of real-time remote medical imaging service under existing network conditions.
The SRT protocol has its root in broadcasting industry, which has solved the problem of insufficient stability of streaming media in public network transmission.However, due to the characteristics of the broadcasting, which is considered as facing the public rather than the individual, there will be some challenges when being applied in the internet-based media, which is often charaterised as targeting the individual audience, the such as the streaming media.For example, the adaptation of high load, streaming transmition protocol and container protocol ecology.This report will present how Bilibili responses when facing the existing challenges and we hope to work together with you to improve the user experience with streaming service.
TCP/IP is the de-facto standard of the Internet. It supports most social media, cloud computing, big data analytics and mobile apps, and is also one of the most important and watched protocols in the streaming and online video industry. As a protocol invented about 4 decades ago and working perfectly for small bandwidth network, its internal mechanism and design are getting outdated, not able to keep up with the speeds needed by many of today’s Internet applications for the best user experience. In this presentation, we will have a deep dive into TCP’s performance bottleneck and look at the workarounds to resolve it in the video/data transmission. Then we will dissect the key problems seen in the TCP R&D in the academia and industry and share our research and development experience with the LiveVideoStack community on how to reinvent TCP in this big data and mobile age. At the end, we will illustrate some typical application scenarios of our new TCP.
P2P bandwidth saving rate = P2P bandwidth / (P2P bandwidth + CDN bandwidth), in order to improve the P2P bandwidth saving rate, the most direct way is directly reducing CDN downloads, but the simple and rude reduction of CDN downloads will inevitably bring experience problem. So our idea is to optimize our P2P network first, and then reduce the CDN download reasonably after the P2P network download efficiency and stability are improved.
Real-time audio and video products face many technical challenges, the most important of which is how to provide stable, reliable, and clear audio and video calls under complex and varied network conditions. This sharing will introduce some thoughts and practices of Ping An audio video cloud in weak network confrontation, large group call, and signaling connection rate optimization.
Top racing cars are never finished. They need continuous research, improvements and tuning. Transport protocols are no different. When used at scale, they encounter a myriad of network conditions that change every moment and they consume amounts of computing resources, in order to perform as expected. They need continuous attention to stay at the top and keep up with the changing world. QUIC is not a silver bullet to change that reality and it even caught UDP stack unprepared. Let’s dive into the details of QUIC performance optimizations.