Japan's NICT comes to UK for White Spaces trial success

The NICT, a Japanese research institute which has developed TV white spaces (TVWS) technology, has been participating in Ofcom's UK white spaces pilot. It has brought both radios and its own geolocation database.

This gives NICT an opportunity to understand how the TVWS technology can work within the draft UK regulatory framework - by which white space devices obtain access to spectrum via an Ofcom-qualified geolocation database. NICT reports that it has achieved a link performance of up to 40 Mbps over a distance of 3.7 km - within a 4 Watt transmission power limit. The link spans the distance between Denmark Hill and Guys campus locations of Kings College London, with which NICT has been collaborating. Two radio technologies have been deployed in the trial:

  • 802.11af (the variant of Wi-Fi designed to exploit the range offered by TV white spaces)
  • LTE in a 20 MHz channel, comprising 3 contiguous white space UHF channels - supporting a data rate of 40 Mbps

More details in this press release from NICT.

 

What's the experience of white space users

The following video clip contains interviews on the experience of using white spaces technology in the city of Wilmington, North Carolina, USA. The interviewees, from the city authority, point to considerable savings in delivering some of the advances they needed in 'reinventing' the city to be more attractive to investment in new jobs. Here's the clip - featuring interviews conducted by Guy Daniels from Telecom TV.