CenturyTel, Cox Communications, Verizon Wireless, Rogers Wireless and MetroPCS are the North American firms introducing fourth-generation wireless service in 2010, and each of those carriers will have to provision backhaul bandwidth ranging from 50 Mbps to 200 Mbps from each tower site, a shift to all-Internet Protocol traffic and will in some cases require denser transmission networks, says Erik Boch, registered professional engineer.
Those issues have clear implications. It will not be practical to keep using T1 lines as the backhaul method, in part because so much more bandwidth is required, in part because of the type of traffic and in part because there simply will be many more transmitting sites, at least for licensees operating in Gigahertz frequencies rather than sub-Gigahertz bands.
Verizon Wireless will have an advantage: it is using 700-MHz frequencies that will propagate so well that a denser network than what the carrier has built for 3G services will not be required.
But some Long Term Evolution networks In order to combat the reduction in coverage performance, the cells have to be moved closer together into a “micro-cellular” networking structure. Additionally, particularly in the downtown urban-canyon environment, the base stations have to be moved off the roof-tops and brought down toward the street level in order to achieve useable coverage at this level.
http://www.mwjournal.com/News/article.asp?HH_ID=AR_9415
CenturyTel, Cox Communications, Verizon Wireless, Rogers Wireless and MetroPCS are the North American firms introducing fourth-generation wireless service in 2010, and each of those carriers will have to provision backhaul bandwidth ranging from 50 Mbps to 200 Mbps from each tower site, a shift to all-Internet Protocol traffic and will in some cases require denser transmission networks, says Erik Boch, registered professional engineer.
Those issues have clear implications. It will not be practical to keep using T1 lines as the backhaul method, in part because so much more bandwidth is required, in part because of the type of traffic and in part because there simply will be many more transmitting sites, at least for licensees operating in Gigahertz frequencies rather than sub-Gigahertz bands.
Verizon Wireless will have an advantage: it is using 700-MHz frequencies that will propagate so well that a denser network than what the carrier has built for 3G services will not be required.
http://www.mwjournal.com/News/article.asp?HH_ID=AR_9415
Tags: 4g, lte, mobile backhaul
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