Transmission of regional contents in a national DAB multiplex WRD15 Geneve 13 February 2015.

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Presentation transcript:

Transmission of regional contents in a national DAB multiplex WRD15 Geneve 13 February 2015

Page 1 BOZZA PER DISCUSSIONE Transmission of regional contents in a national DAB multiplex The DAB system is designed to carry in its multiplex several multimedia contents having the same intended coverage area The spectrum allocated in band III and L-band to the DAB service is subdivided in blocks Each block is referred by two alphanumeric charcarcters: the first one indicates the frequency channel, the second one the position in the channel (e.g. 12B). In band III, GE06 reserved channel 12 exclusively for DAB service. The other channels of the band can also be utilised for DVB-T

Page 2 BOZZA PER DISCUSSIONE Transmission of regional content in a national DAB multiplex The L-Band has been identified for IMT under agenda item 1.1 of the next WRC15. In some countries, where band III is intensively utilised for DVB-T, the number of blocks available for DAB are very limited. International coordination: in order to avoid interferences to the neighbouring countries no more than half of the available blocks can be utilised. Conversely, the number of programmes to be transmitted could be very high

Page 3 BOZZA PER DISCUSSIONE Transmission of regional contents in a national DAB multiplex In some countries public broadcasters need to transmit both national and regional/local contents The regional content can be time limited (few hours a day) Different solutions can be chosen in order to broadcast national and regional/local contents

Page 4 BOZZA PER DISCUSSIONE Transmission of regional contents in a national DAB multiplex k x SFN Planning Cluster that will be repeated 12A 12C 12D 12B 12A 12C 12D 12B 12A 12C 12D 12B 12A 12C 12D 12B 12A 12C 12D 12B 12A 12C 12D 12B 12A 12C 12D 12B 12A 12C 12D 12B 12A 12C 12D 12B Each Block cover one Region. No neightboring Regions have assigned the same Block

Page 5 BOZZA PER DISCUSSIONE Transmission of regional contents in a national DAB multiplex 12A 1 x SFN for National contents (DAB+) F 1 F 3 F 4 F2 F 1 F 3 F 4 F 2 F 1 F 3 F 4 F 2 F 1 F 3 F 4 F 2 K x SFN for Regional contents (DRM+)

Page 6 BOZZA PER DISCUSSIONE 12A Transmission of regional contents in a national DAB multiplex When Regional programmes are short compared to the National programme (t1 >> t2). When can the dynamic reconfiguration be useful? t1 t2t1 t2 t1 t2 t1

Page 7 BOZZA PER DISCUSSIONE Transmission of regional contents in a national DAB multiplex

Page 8 BOZZA PER DISCUSSIONE Transmission of regional contents in a national DAB multiplex

Page 9 BOZZA PER DISCUSSIONE Transmission of regional contents in a national DAB multiplex

Page 10 BOZZA PER DISCUSSIONE Transmission of regional contents in a national DAB multiplex

Page 11 BOZZA PER DISCUSSIONE Transmission of regional content in a national DAB multiplex