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Find the technical paper here:
DKE WG 731.0.8 / University Braunschweig / University Hanover / APWPT / Audio Technica
White Space Devices (WSD) sind in den USA im Bereich der UHF-Fernsehfrequenzen zugelassen und deren Anwendung wird in Europa diskutiert. Eine Reihe von europäischen Arbeitsgruppen befassen sich mit dieser Fragestellung.
Um die Sachdiskussion zu fördern wurde der APWPT eine Studie zur Zuweisungspraxis in den USA zur Verfügung gestellt. Wir bedanken uns bei den Autoren!
Lesen Sie außerdem die Originalfassung der FCC-Regulierung zu WSD. Die farblich markierte Passagen werden in der Studie erläutert.
Many governments are discussing to permit TV white space devices (WSDs) to operate on frequencies in the TV bands. Although the TV channels vary from location to location, such devices shall have the flexibility and agility to find and use those frequencies which are not occupied by licensed services like PMSE, no matter where the devices are located.
The USA already has passed rules for the certification and operation of "TV band(s) devices" (TVBDs), as WSDs are called there. The first device has been certified for production and marketing on December 22, 2011. Furthermore, the Office of Engineering and Technology (FCC) designated ten entities to administer TV bands databases which provide lists of available channels to TVBD operators. At this time (May 2012), two of these entities, i.e. Spectrum Bridge and Telcordia, have received approval to operate their database systems to serve devices.
The following text is a quotation of the rules for TVBDs and TV bands databases, set forth in Part 15 of the FCC Rules. The most important sections are colored.
See also the update as of 17th May 2012:
Unlicensed Operation in the TV Broadcast Band [107 KB]
This document addresses five petitions for reconsideration of the Commission’s decisions in the Second Memorandum Opinion and Order (‘‘Second MO&O’’) in this proceeding and modifies the Commissions rules in certain respects. In particular, the Commission is increasing the maximum height above average terrain (HAAT) for sites where fixed devices may operate; modifying the adjacent channel emission limits to specify fixed rather than relative levels; and slightly increasing the maximum permissible power spectral density (PSD) for each category of TV bands device. These changes will result in decreased operating costs for fixed TVBDs and allow them to provide greater coverage, thus increasing the availability of wireless broadband services in rural and underserved areas without increasing the risk of interference to incumbent services. The Commission is also revising and amending several of its rules to better effectuate the Commission’s earlier decisions in this docket and to remove ambiguities.