Dynamic Spectrum



Dynamic Spectrum / White Spaces

By using coverage calculation and subscribers, ICS telecom EV determines where White Spaces may be added and how White Space devices may affect existing licensed users such as broadcasting and wireless microphone users.

ATDI has invested all its experience in signal propagation and coexistence scenarios to equip ICS telecom EV with the most comprehensive features focused on White Spaces:

  • DTT coverage

  • Reserved channels

  • Allotments, Assignments, PSME, International coordination, Protected areas (polygons)

  • DTT white-space calculation

  • TVWS availability calculation

  • Available Spectrum maps

  • WSD channel assignment

  • WSD to DTT interference calculation

  • Data storage: Location / channel / WSD class / permitted power level / online access

ICS telecom EV includes a wide set of multi-technology oriented features to exploit the potential applications of White Spaces:

  • Devices or routers vs licensed service areas (C/I mode)

  • Licensed services vs devices or routers (IRF and C/I modes)

  • Licensed services vs earth satellite Rx (GSO, NGSO, Constellations)

  • Devices vs devices or routers vs routers or devices vs routers
    (IRF mode)

  • Devices or routers vs polygons or routes (PFD)

Case studies

Enhanced Wi-Fi


The majority of current Wi-Fi devices operate in the 2.4GHz spectrum band. White Spaces could provide new capacity and boost the distance a device (WSD) can be from a base station and still be connected. This has the ability to facilitate Wi-Fi networks that stretch across towns and cities, thanks to the lower frequency of TV White Spaces (typically between 470 and 790 MHz).


The main difference between WSD and Wi-Fi is that the White Space router will first need to consult an online database (WSDB), notify its location and update it on a regular basis. The database will then return details of the radio frequencies and power levels the router is allowed to use. This will ensure that the connected devices do not interfere with existing spectrum usage.

Using ICS telecom EV capabilities, a WSD operator can determine White Space areas and potential interference in a specific zone to complete the White Space workflow and publish the data online.

ATDI: Taking Wi-Fi everywhere

Machine-to-Machine Communications (M2M)


Machine-to-Machine communications allow information to be exchanged between devices. White Spaces could be used to wirelessly transmit this information, using its additional range to reach deep inside buildings. This could be especially useful for wireless utility meters in consumers’ homes, keeping an inventory of stock owned by a business, or making it easier for scientists to conduct research by automating the measurement of different readings.


Due to the complexity and the wide range of M2M applications, ATDI has committed a team of experts to support the planner at every stage of the project (guidelines, vendor references, planning, IT integration, system interconnectivity, frequency resources, web services, tests, embedded Sim and module analysis, product purpose, roaming…) using ICS telecom EV and then identifying the White-Spaces class that could be used.

ATDI: Infinite connections

Rural broadband


White Spaces could be used to provide rural locations with broadband services. In practice, this could be achieved by building a network of transmitters that use White Spaces to link remote houses and villages to larger towns that are already connected to the internet.


Coverage calculations and P2P analysis using subscribers in ICS telecom EV will help to find areas where Broadcast (or other) systems offer no coverage on a specific channel, that can be reused to provide broadband access.

ATDI: Taking broadband worldwide

White-Spaces - WSD - TVWS - UKPM - DSA - LSA