Comcast launched a high-speed wireless data service in Portland on Tuesday as the first step in what the cable-TV network operator expects to eventually become a nationwide rollout — with Atlanta, Chicago and Philadelphia expected to go online later this year. Called Comcast High-Speed 2go, the new 4G service will operate over Clearwire’s WiMAX infrastructure in the Portland metropolitan area and elsewhere over Sprint Nextel’s nationwide 3G network. Comcast is a major investor in Clearwire, together with Bright House Networks, Google, Intel, Sprint and Time Warner Cable. Comcast’s high-speed wireless data service is being bundled with one or more of the network operator’s Internet, phone and television products because “in today’s world, consumers don’t want to be disconnected for even a minute,” said Comcast Senior Vice President Cathy Avgiris. “Now Comcast provides wired and wireless access — a combination consumers won’t want to live without.” An Uphill Battle Though the move is a step in the right direction

for WiMAX, the state of the fledgling high-speed wireless service “is pretty dire” — not only in the U.S. but also anywhere else in the world, observed Gartner Vice President Ian Keene. A competing 4G standard called long-term evolution (LTE) is already on the horizon and the global recession has been holding back investment in WiMAX, Keene explained. “Generally, where WiMAX is going to be successful is in developing countries where wireless broadband will essentially be a DSL replacement,” Keene said. “But it’s an uphill battle for WiMAX anywhere else with a developed infrastructure. The outcome will depend on just what is being offered and comes down to pricing and product marketing.” Comcast is delivering two separate High-Speed 2go offerings. The operator’s 4G-only data card provides customers with the fastest available service within Clearwire’s 4G service footprint, while the network operator’s dual-band data card…

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Analysts Doubt Future of Comcast’s WiMAX Offering