using ‘white spaces’ to deliver broadband in rural not-spots dr david h crawford centre for...
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Using ‘White Spaces’ to Deliver Broadband in Rural Not-Spots
Dr David H CrawfordCentre for White Space Communications
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Who We Are…
A multi-disciplinary international centre working with industry, government and academic partners to undertake R&D on White Space and related areas
• Led by the University of Strathclyde
• Builds on over 30 years of experience in mobile communications and signal processing
• Investigating technological and socio-economic aspects of Dynamic Spectrum Access using White Spaces
• Academically-led, Industry-focused
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What is ‘White Space’?
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790MHz
• TV spectrum contains ‘white’ space• How much of this can be used for other purposes (e.g. Rural broadband, M2M, ...)?• Benefits include:
– More effective network coverage (particularly important in rural areas)– Good propagation characteristics (e.g. fewer ‘not-spots’)
• Regulators following a licence-exempt approach• But need to ensure that licensed services (e.g. TV, PMSE) are not adversely affected
470MHz f
Ch 21 Ch 60
……
TV spectrum (illustrative example):
320 MHz of RF spectrum
Potential Applications…
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Pollutionmonitoring
Public safety and security
Outdoor public internet access
Campus networks
In-buildingnetworks
Emergency services
DynamicSignage
Traffic monitoring& control
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Rural Broadband – Bute Trial…
• Collaborative R&D project supported by the Technology Strategy Board
• Has successfully demonstrated the viability of using White Space for rural broadband connectivity
• Eight premises connected – trialists and their families speak very highly of their experiences− Video streaming (iPlayer, YouTube)− Facebook, Twitter, Videoconferencing− DEFRA, Internet Banking, VAT returns, …
• Six collaborating partners:
(Mainland)
White Space radio links to
customer premises
High-capacity microwave backhaul to mainland
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Trialists’ premises
Equipment Set-Up…
Telephone Exchange
Field Measurements…
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• Measure coverage and compare with simulations
• Measure White Space quality• Measure DTT interference
Data currently being collated – results & conclusions to follow
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Where Next?
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Next Steps…• Bute Trial – Lessons learned
– Report coming soon!
• Ofcom Pilot Q3 2013;UK ‘full solution’ expected Q2 2014
• Extension to frequencies other than TV band…(?)
• Emerging Markets in Developing Countries
– UN MDGs (Education, Health, …)
– Affordable internet access
http://www.mawingu.org
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www.wirelesswhitespace.orgFor further information, please visit:
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