Pre-GSR14 event: ITU workshop brings together regulators and industry

Find out if your country has established regulations authorizing TV White Space equipment to operate by selecting country of interest.

UK moves towards dynamic access for TV white space spectrum

For countries interested in adopting regulations to unlock this underutilized resource, the Dynamic Spectrum Alliance DSA provides model rules among other resources and support. Completed regulations Pending regulations. Find latest rules here. Adaptrum devices are FCC certified and approved to operate with the Nominet database. Regulations completed in Adaptrum devices are ETSI certified to meet the highest, Class 1, emission standards and are apprved to operate with the Nominet database. Successful pre-regulation trial in andcurrently developing regulatory framework to permit TVWS operation.

Successful pre-regulation trial in and currently developing regulatory framework to permit TVWS operation.

Harnessing the White Spaces

Interm regulations released in The cognitive radio system that enables dynamic access to the TV White Space spectrum is comprised of two primary components: To ensure interference-free operation, Adaptrum radios have been certified to meet, and in many cases, exceed strict radio performance specifications. Learn more about Adaptrum radios Adaptrum has partnered with a number of leading database providers, which provide an authorized list of available TV White Space channels based on individual radios locations.

Contact Support Resources Newsroom Careers. What are TV White Spaces?


  • La marcha zombi (Spanish Edition).
  • Theodor W. Adorno: Literatur und gesellschaftliche Wirklichkeit - Zur Literaturtheorie Adornos (German Edition).
  • Dynamic access technology unlocking the TV White Space | Adaptrum.
  • In EDs Path.

What is TV White Space? High Channel Availability In many parts of the world, TV broadcast spectrum is severely underutilized. This paper describes an assessment study on TV White Spaces availability in Malawi using affordable tools. The conclusion of the study is that 1 it is possible to assess the spectrum usage using low cost equipment 2 ample spectrum for TV White Spaces deployment is available in Malawi.

This article explores the history of spectrum policy and reviews advantages and disadvantages of current management practices in light of current technological and economic trends. The evidence suggests that not only is spectrum sharing becoming more important and feasible, but that a framework that makes sharing the default approach offers significant political, economic, and societal benefits. Exclusive use licenses will still be desirable in many circumstances, but they should have the burden of proof.

This paper argues that the problem in the spectrum ecosystem is the artificial constraints on innovations that better use spectrum resources. Further, liberalized spectrum access has led to game-changing economic growth and can enable innovations offering socio-economic advantages to flourish. This paper proposes a regulatory framework for heterogeneity of white spaces emissions limits in an effort to facilitate homogenous service quality across different locations.

Committed to connecting the world

The paper argues that rules must be both frequency- and spatially-aware to be effective. This paper discusses the advantages of each spectrum regime framework — licensed and unlicensed — and explains why unlicensed spectrum has been a particularly strong engine for innovation and a crucial complement to licensed spectrum access. This study considered how the extension of the collective use approach might contribute to broader EU policy objectives, with regard to optimising the use of scarce radio spectrum resources, strengthening the internal market, supporting innovation, and promoting competitiveness.

This document provides requirements with which secondary TV white spaces users need to comply in order to operate in the frequency range from to MHz without impacting the performance of primary users. Spectrum regulators are preparing for flexible spectrum use and the implementation of new technologies. To make the appropriate decisions, regulators need to identify and evaluate the different alternatives.


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  • What are Dynamic Spectrum and TV White Spaces?.
  • The Benefits of TVWS?

This paper examines a systematic classification of the spectrum access models that can be used together with suitable auctions in order to evaluate and decide between different models. Dynamic spectrum access technologies could leverage much of that unused spectrum and increase available bandwidth for consumers.

Licensed but unutilized television TV band spectrum is called as TV white space in the literature. Comprehensive quantitative assessment and estimates for the TV white space in the MHz band for four zones of India all except north are presented in this work.

This work uses FCC data for TV transmitter locations, census data and radio propagation models in an attempt to quantify the magnitude and geographical distribution of white spaces spectrum opportunity in the United States. In this work, we quantify and compare the performance of DBA model-based predictions serving as a baseline with measurement-based approaches that employ Kriging followed by classification for coverage region estimation. This paper summarizes the results of a three-year long Illinois Institute of Technology Spectrum Observatory research study.

A week-long measurement campaign on spectrum use in London, U. This paper details the correlation structures and dynamics in spectrum use in temporal, spatial and frequency domains. This paper presents the spectrum measurement setup and discusses lessons learned during measurement activities. Measurement results gathered at three locations are compared and show differences in the background noise processes. Additionally, a new model is introduced for the duty cycle distribution that has multiple applications in the DSA research.

Spectrum sharing technology and business models continue to evolve, creating new opportunities for businesses and communities. Below are examples of emerging models in this space. This article describes a wireless broadband access testbed running in the Scottish Highlands and Islands, deployed as part of the TV white spaces trial in Bute. This paper explores current models of spectrum management, the technologies that use spectrum, and the limitations of current spectrum management policies.

It argues that regulatory mechanisms should exploit the capabilities of new technologies, including cognitive radios, spectrum-sensing technologies, automated online spectrum-allocation databases, and dynamically controlled transmission power networks. This study collects evidence about eight wireless markets and suggests that markets are adopting unlicensed wireless strategies in mission-critical applications, in many cases more than they are building on licensed strategies. This paper demonstrates that unlicensed spectrum has played a central and critical role in growth of wireless broadband data services.

This paper analyzes the potential of TV whitespaces for secondary cellular use. It studies the situation where a single cellular operator improves the performance of its network by upgrading its existing cell-sites to opportunistically and cost-efficiently utilize secondary spectrum resources.

Spectrum Measurement Studies

The study then determines the available capacity for such networks under interference-margin constraint rules and use terrain-based propagation models to retrieve realistic coverage predictions. However, due to a number of studies that are yet to be completed, a request for license extension is being considered. Overall, since the TVWS trial network was launched in June , there was no concern or report of interference to the local TV reception or any interested party. Consequently, a series of pilots and projects were undertaken in defined rural parts of Kenya.

Dynamic Spectrum in Action: How TV White Space Devices Work

These projects relied and continue to rely on a combination of wireless technologies designed to operate on a license-exempt or unlicensed basis, including Wi-Fi and TV White Space base stations and end user devices. UK regulator Ofcom has been studying the opportunity for dynamic access to white space spectrum for some time.

Its plans for UHF TV white space spectrum are already well advanced and it is considering applying similar principles to other frequency ranges in the future. DTT spectrum allocations are relatively static and can remain largely unchanged for years at a time.

Dynamic Spectrum and TV White Spaces | The New Media Consortium

In contrast, PMSE spectrum is allocated as and when required by activities in different locations. Short-term events, such as private functions, concerts and sports events, may require spectrum for as little as a few hours.


  • Resources - Dynamic Spectrum Alliance.
  • UK moves towards dynamic access for TV white space spectrum;
  • Dynamic Spectrum Access: LS telcom.

Many of these events will be planned well in advance, but short term requirements may also crop up, for example if a major news story breaks. The chart below shows how spectrum might be allocated in a typical area at one point of time. The extensive white spaces illustrate the opportunity for dynamic spectrum allocation. There is a balancing act in implementing dynamic spectrum access.

If access is controlled too tightly e. However, if the level of control is too loose e. Ofcom has devised a framework of devices, databases and control algorithms to underpin the operation of TV white space dynamic access. The general approach is illustrated in the figure below. At the heart of the dynamic access framework Ofcom will operate a central control system, which will be supported by a number of independent database operators.

The Ofcom system will take information on the usage of DTT channels in different parts of the UK and will apply a set of rules to derive white space operating parameters that protect TV broadcast services. This information will be updated every six months. JFMG will provide Ofcom with regular information on the allocation of PMSE frequencies, to enable Ofcom to provide those details to its independent database operators every three hours.

The database operators will apply algorithms defined by Ofcom to derive white space operating parameters that protect PMSE services and will combine this with the DTT white space information provided by Ofcom.