How IP-based Broadcast Meets 5G for Resilient and Sustainable Media Distribution
Originally Aired - Monday, April 15 | 3:20 PM - 3:40 PM PT
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The world's broadcasting standards are evolving towards IP-based approaches, most notably with ATSC 3.0, DVB-I and the emerging TV 3.0 solution from SBTVD. At the same time, 3GPP incorporated multicast and broadcast capabilities in its release 17 to scale up the capacity of 5G networks for linear content: this is how 5G Broadcast technology, now integrated within the 5G Media Streaming Architecture (5GMSA), became a potential standard to play a role in DTT delivery among the already well-established systems. Broadcast networks, when combined with unicast delivery in a hybrid scenario, offer the best opportunities for distributing the highest video qualities together with interactivity, personalization, time shift, on demand, new immersive experiences and much more, together with larger network footprint, more cost efficiency and higher reliability. The unique advantages of the latest generation broadcast networks, such as the high spectral efficiency of ATSC 3.0 and DVB-T2/DVB-NIP (DVB Native IP), as well as the lower carbon footprint of broadcast compared to unicast streaming, are well established. The attractiveness of 5G Broadcast for direct delivery of linear television and radio services to mobile devices is also unquestionable. There is therefore consensus on the necessity to further develop bridges between those evolved broadcast and LTE-based technologies so that they can ultimately offer the best of broadcast, multicast and unicast worlds. This paper and presentation will describe the key technical aspects of the different initiatives and solutions associated with this goal and how they can complement each other to eventually converge towards a more resilient and sustainable media distribution landscape. For this purpose, the paper will also outline the main broadcast technologies that are likely to dominate future media distribution, highlighting the core technologies chosen in each case; and will provide an overview of the main elements of the 5G ecosystem designed to support media distribution, including 5G Broadcast, 5G Media Streaming, etc. Topics covered will include ATSC’s project to specify a Broadcast Core Network (BCN) that is agnostic to the DTT system and designed to allow converged operation within the various available delivery networks such as 3GPP, satellite, etc. This approach, enabling an intelligent use of the available networks, allows use cases, e.g., datacasting, to be deployed efficiently at scale across a collection of broadcast facilities and networks. This paper will also provide a perspective on how broadcast and 3GPP standards can work together, converging on the service layer with the use of DVB-I service discovery on top of 5G technologies. It will describe collaborative work between the DVB Project and the 5G Media Action Group aimed at ensuring that services described and packaged for delivery according to DVB standards can now be carried over LTE-based and NR-based 5G networks.
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