New standards for long range wireless networks have been published, IEEE 802.22 standard for Wireless Regional Area Networks (WRANs) means that broadband access can be provided over long distances, up to 100 kilometres and it means rural areas could more easily benefit from broadband accesswith developing countries targeted by the IEEE. The engineers at the IEEE have very cleverly managed to use the VHF and UHF bandwidths usually used for TV and they accessing the white-spaces between TV channels at the 54 MHz to 862 MHz, which is possible by using cognitive radio capabilities. This new super WiFi standard promises to bring speeds of up to 22Mbps to devices as far as 60 miles away from the nearest transmitter and the standard carefully exploits swathes of unused white space within transmission bands that were originally reserved for analogue TV……………
IEEE, the world’s largest professional association advancing technology for humanity announced that it has published the IEEE 802.22 standard. IEEE 802.22 systems will provide broadband access to wide regional areas around the world and bring reliable and secure high-speed communications to under-served and un-served communities. This new standard for Wireless Regional Area Networks (WRANs) takes advantage of the favorable transmission characteristics of the VHF and UHF TV bands to provide broadband wireless access over a large area up to 100 km from the transmitter. Each WRAN will deliver up to 22 Mbps per channel without interfering with reception of existing TV broadcast stations, using the so-called white spaces between the occupied TV channels. This technology is especially useful for serving less densely populated areas, such as rural areas and developing countries where most vacant TV channels can be found. IEEE 802.22 incorporates advanced cognitive radio capabilities including dynamic spectrum access, incumbent database access, accurate geolocation techniques, spectrum sensing, regulatory domain dependent policies, spectrum etiquette, and coexistence for optimal use of the available spectrum. The IEEE 802.22 Working Group started its work following the Notice of Inquiry issued by the United States Federal Communications Commission on unlicensed operation in the TV broadcast bands.
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