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White Space Networks for Machine to Machine (M2M) Services

13/07/2012 17:00 - 14/07/2012 01:00
962 views
HostUniversity of Oxford
VenueUniversity of Oxford Department for Continuing Education, Ewert House, Ewert Place, Summertown OX2 7DD

White Space networks take advantage of the empty fragments of spectrum interspaced between frequencies in use. White Spaces are significant because regulators in UK and USA have opened up portions of spectrum originally used by analogue TV for use by White Space applications. Other countries are expected to follow suit. This initiative frees up to 150MHz of high quality spectrum. In comparison, typical nationwide 3G networks have to make do with only 30MHz of spectrum. While 3G spectrum cost billions of dollars, white space radio spectrum is available free of charge. This has the potential to bring new innovation to the market and provide new services to customers. White Space devices are expected to have a range of miles instead of feet (in comparison to WiFi). Their signals are expected to travel through physical obstacles like walls, trees etc just like conventional broadcast signals. Also, they are expected to deliver network speeds comparable to current 3G and 4G technology. Despite these advantages, White Space spectrum has some unique limitations. These limitations arise primarily from the need to avoid interference with existing services like broadcast. Avoiding interference is a complex and dynamic process. The challenge is not only to find empty frequencies but also to refer back to an online database to see if things have changed. One of the key applications for White space networks is Machine to Machine (M2M) services. M2M connections are anticipated to reach more than 50 billion connected devices by 2020. White space networks could have a key role in supporting these huge number of connections to fulfil the vision of a truly ubiquitous wide area network i.e. the emergence of 'the Internet of Everything'. For more details or to book a place: http://www.conted.ox.ac.uk/H600-41

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