On Monday, the largest U.S. cable operator Comcast Corp. presented its fourth-generation (4G) wireless service under the name of Comcast High-Speed 2go for subscribers to access the Web beyond their homes anywhere within the USA. The new solution is the first execution of collaboration between Comcast, Clearwire Corp and other companies that use the emerging WiMax high-speed mobile technology. 

Comcast High-Speed 2go is launched officially in Portland, Oregon on Tuesday and is expected to be expanded to Atlanta, Chicago and Philadelphia before the end of the year.

With its new service Comcast is to provide with the data to laptops, netbooks and other devices over a wireless network at faster speeds than has been commonly available to date. Thus, the company, that is currently supplying with download speeds between 1 and 1.5 megabits a second trough its 3G wireless networks, intends to offer download speeds of up to 4 megabits per second.

Cablevision Systems Corp offers mobile Internet service via Wi-Fi, a short range service typically limited to a home, restaurant or "hotspot." The operator is providing Wi-Fi service to its digital subscribers throughout its market in the New York metropolitan area.

A Metro version of the data card, which is typically installed into a laptop to allow wireless Internet access, will cost $49.99 a month when bundled with home Internet service. The Metro version will only work within the 4G metropolitan coverage area. A nationwide version for $69.99 a month will let subscribers get access to the Internet with a help of Sprint Nextel Corp's 3G network where the 4G network is not available.