IEEE BTS: Spectrum, the ultimate commodity of the broadcast/telecom industry

Friday, September 14th
14:45 - 16:30

The challenge is that regulatory bodies, the EU and FCC etc have ‘required’ broadcasters to release unused spectrum for wireless broadband and key telecom applications. Furthermore, some of the new telecom applications are tools aimed at linear and non-linear broadcast.  For broadcasters this is not a black or white issue, and, in many cases, Broadcasters argue that digital, over-the-air broadcasters are far more efficient at delivering certain types of video to many viewers. Which is the most efficient tool for this application? This is the question that this session strives to address.


Title: The spectrum is under pressure 

Guy Bouchard, Télé Québec, IEEE BTS

This short paper will address the very nature of the broadcast application and its impact on spectrum. The broadcast services are in metamorphosis, viewing habits are changing, Linear & Non-Linear broadcast are now sharing viewers’ attention in a dynamic environment where the viewers are in the driver seat. Fixed and mobile broadcast services are also sharing viewers’ attention, however all these new services are in desperate need for the ultimate commodity, the spectrum…

This paper will states facts and derives fundamental questions, The following papers will try to answer some of them


Title: Broadcast is the best option DVB-T2  

Peter MacAvock ,EBU. Chaiman DVB

This paper will demonstrate that next generation television standards such as DVB-T2 are the best vehicle to deliver linear and non-linear Broadcast survives.

The superior Physical layer of SVB-T2 can deliver fixed services with a lower awgn as well as the best mobile performance in a fast moving multipath prone environment The Physical layer pipes structure allows enough flexibility to address every broadcaster business requirements, While remaining perfectly scalable in cases where requirements are changing.

DVB-T2 one-to-many (multicast) model is the cornerstone of the standards it allows the implementer the reach of the optimum spectrum efficiency in almost every application scenario.


Title: Convergence between Broadcast and Mobile Broadband

Ulrich Reimers, Institut fuer Nachrichtentechnik (IfN), Technische Universitaet Braunschweig (Germany)

The mobile industry has been testing the feasibility of evolved Multimedia Broadcast Multicast Service (eMBMS), an LTE embedded broadcast approach to support a growing mobile video/TV consumption and the delivery of other highly popular data services. But, eMBMS has so far only been used in small scale scenarios with local coverage. When it comes to large scale service areas with regional or even national coverage, the cellular nature of eMBMS has not proven to be attractive for cost efficient LTE broadcast content distribution. Adapting LTE broadcast to traditional High Tower High Power (HTHP) broadcasting towers and introducing this as a third service layer, i.e. as an extension of LTE unicast and eMBMS can resolve this issue as it reduces network load, energy consumption and network costs for such popular services. Additionally, it creates the possibility of cooperation between the cellular and broadcasting networks enabling a cooperative spectrum usage.

The term “Tower Overlay over LTE-Advanced+ (TOoL+)” describes the transmission of an extension of LTE-Advanced (LTE-A) offering broadcast services, especially live video, from a traditional High Tower High Power (HTHP) broadcast infrastructure, rather than in a cellular LTE-A network. TOoL+ was invented and developed by IfN. Since LTE-A is optimized for the Low Tower Low Power (LTLP) environment of cellular networks, the use of a HTHP environment requires some modifications of the LTE-A standard, e.g. the definition of a dedicated broadcast carrier and of additional OFDM parameters with longer cyclic prefixes. These modifications are represented by the term LTE-A+. In one of the modes, TOoL+ even supports a cooperative spectrum use by DVB-T2 (or ATSC 3.0 in the future) and LTE-A+ if this is attractive to market players. IfN developed a Software Defined Radio (SDR) based TOoL+ implementation to demonstrate the technological feasibility of this approach. An extended version of this demo has been used during two field trials conducted in Paris, France and in the Aosta Valley, Italy to evaluate the proposed modifications and the cooperative spectrum use in a real environment. The analysis shows that LTE-A+ is a suitable technology for HTHP broadcast to mobile devices as its coverage area is similar to that of DVB-T2.

In line with the ideas underlying TOoL+, 3GPP has recently specified FeMBMS (Further evolved Multimedia Broadcast Multicast Service) in Release 14. FeMBMS supports a long cyclic prefix and thus makes larger network cells feasible. At IfN we have already implemented FeMBMS and by the time of IBC 2018 will have carried out field trials possibly even in a number of European countries.


Title: Considerations and Expectations of Next Generation Broadcasting Systems in China

Wenjun Zhang, Professor, Shanghai Jiao Tong University (SJTU), Shanghai, China

5G broadband wireless system has recently become one of the hot research frontiers. In China, the big three Chinese telecos have committed to invest $200B over the next seven years to build the world’s largest 5G infrastructure. The ongoing research and development of Chinese next generation broadcasting system is taking seriously considerations on the possible convergence of the broadcasting and mobile broadband eco-systems. The next generation broadcasting system requirements in the 5G era shall include various new elements and features, such as IP-centric broadcast-broadband compatible frame structure, cooperative transmission cross networks, dynamic spectrum access, very high capacity and data rates, ubiquitous deep and reliable coverage, in-band low delay interactivity, etc. The next generation systems will not only be capable of providing efficient and cost effective services in modern urban population centers, but also delivering high quality and diversified state-of-the-art interactive media services to the general public in China’s vast rural areas to thousands and millions of countryside residence. The media broadcasting should be an element of the 5G eco-system, or as part of the 5G heterogeneous networks for the future connected society

Directeur Technique
Chairman of the Steering Board
Institut fuer Nachrichtentechnik (IfN)
Shanghai Jiao Tong University (SJTU)