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Mobile Broadcast


The fifth generation of mobile communication (5G) is scheduled for market readiness starting in 2020 and will clearly increase the performance capacity of the transmission networks and end devices. The global mobile communication standardisation committee 3GPP (3rd Generation Partnership Project) is currently working on the technical specifications.  The introduction of 5G could establish a market with millions of smart phones and tablet PCs as potential TV receivers that could attractively combine live-TV, catch-up TV, social networks and many other services.

The IRT evaluates the broadcast features of mobile communication systems (LTE/5G) in the laboratory and field tests and participates in international working groups to fully represent the requirements of broadcasting such as free-to-air and large-scale supply (high-power-high-tower).

[Translate to english:] Das IRT evaluiert die Broadcast-Funktionalitäten von Mobilfunksystemen (LTE/5G) im Labor und in Feldtests und nimmt an internationalen Arbeitsgruppen teil, um die Anforderungen des Rundfunks, wie beispielsweise Free-to-Air und großflächige Versorgung (High-power-high-tower) vollständig abzubilden.

IMB5 (LTE/5G) project


In the IMB5 research project managed by the IRT, a consortium of Fraunhofer IIS, Friedrich-Alexander University Erlangen-Nuremberg, Nokia, Rohde & Schwarz and the associated partners Bayerischer Rundfunk and BMW Research and Technology evaluate the development capacity of the eMBMS (evolved Multimedia Broadcast Multicast Service) broadcast mode with regard to the television signal transmission requirements.  In 2014, the world’s largest single-frequency network for LTE eMBMS went into operation at transmission sites of the Bayerischer Rundfunk in Munich. Another network for detailed signal and protocol analyses was established at Fraunhofer IIS in Erlangen. The technical possibilities were evaluated in a field test with the first prototype receivers, and the required system changes for scalable distribution networks and an improved signal supply were examined. The IMB5 research project was funded by the Bayerische Forschungsstiftung for a period of 24 months.



eMBMS has been available since the 4th mobile communication generation LTE (Long Term Evolution) and is a point-to-multipoint service that allows for the simultaneous transmission of audio-visual data streams (streaming) and files (push) to many users. One important feature of eMBMS is the transmission in a single-frequency network where several base stations are synchronised and bundled into radio cell groups. The identical content can be simultaneously transmitted on one frequency in several radio cells. The principle equates to the single-frequency operation such as DVB-T/T2 and DAB+ known in broadcasting. In the long term, the insights gained from the research projects will enable the combination of the efficiency of established broadcast services with the flexibility and individuality of interactive mobile broadcast services in a way that is attractive for the system. The approaches are currently in the very early stage of research and therefore will have no effect on the introduction of DVB-T2 HD in Germany. Current questions deal with the economic efficiency of mixed transmission scenarios with large and small cellular networks and the acceptance of services within the framework of field tests. Furthermore, other international standardisation work for the full representation of the broadcast requirements such as free-to-air without SIM card, receive-only mode, large-scale supply (high-power-high-tower) and one-off distribution of the TV programs despite several network providers as well as further development work are necessary for achieving market-readiness.

Your contact

Dr. Roland Brugger
Head of Department
Tel. +49 (0)89 32399-436