Technical configuration of TV White Space Devices

摘要

To avoid the interference, there are large areas in TV planning called TV white spaces (TVWS) where certain channels are deliberately not used. It was proposed to use them for low-power wireless networking on non-interfering basis with the licensed (primary) Digital TV service. The lack of knowledge about locations of TV receivers as well as unreliability of the aggregate interference impact estimation caused by large number of White Space Devices (WSDs) accessing the spectrum are reported to be key challenges for the use of TVWS. We propose a novel approach where parameters required for protection of the primary system are calculated for a certain minimal separation distance observance of which for specific inhabited area could be ensured. In our view, to reuse spectrum efficiently the portable WSD has to support the dynamic power control via its sensing ability while the geolocation database which informs WSDs concerning the available channels should contain the list of recommended minimum distances.