Integrated broadband broadcast video scalability usage proposal to next-generation of brazilian DTTB system

This paper introduces the current Brazilian DTV (Digital Television) scenario toward the next DTTB (Digital Terrestrial Television Broadcasting) system (named TV 3.0), the fixed Internet broadband scenario, as well the video scalability advantages of the new DTTB generation. Targeting to contribute with solutions for the new system, it is proposed to use video scalability and hybrid transmission to deliver UHD (Ultra High Definition) 4K video to the final user to enhance video quality and user experience. 2K video BL (Base Layer) is OTA (Over the Air) broadcasted using ROUTE (Real-Time Object Delivery Over Unidirectional Transport) protocol as a transport layer. In contrast, the UHD 4K EL (Enhancement Layer) is OTT (Over-The-Top) transmitted to the receiver via DASH (Dynamic Adaptive Streaming over HTTP - Hypertext Transfer Protocol) for synchronizing both layers. A hybrid receiver's architecture is proposed to receive and combine the BL and EL video contents. Video delivery latency is a challenge that video distributors should always be aware not to impact the user's experience. Therefore, different tests have been executed to measure latency between video layers and test the receiver's behavior in different conditions.