Comcast is making further inroads into the U.S. wireless market with the launch of its High-Speed 2go service in Boston, which will run on Sprint’s 3G network.

Comcast says it will launch a 4G version of the service on Clearwire’s WiMAX network “later in the year.”

Comcast is bundling its latest mobile broadband offering with its Internet, television and voice products. Current customers will be able to subscribe to the 3G service for $40 per month.

Comcast currently resells Clearwire’s WiMAX service in several markets throughout the country, including Portland, Ore.; Las Vegas; and Chicago.

Together with Intel, Time Warner Cable, Google and Bright House Networks, Comcast invested $3.2 billion in Clearwire in late 2008.

Time Warner Cable Business Class, a division of Time Warner Cable, last week announced the debut of its WiMAX wireless data service in Texas.

More Broadband Direct 5/04/10:
•  Comcast launches 3G in Boston
•  RCN debuts TiVo Premiere in D.C.
•  Cisco increases CMTS capacity with new D3 line cards
•  Cisco signs on with Zodiac for tru2way partner program
•  Mixed Signals adds EBIF monitoring
•  Harmonic offers compact optical node for cable systems
•  ActiveVideo, SMiT integrate products
•  Cell backhaul could grow to $3B a year for cable
•  Feds to look at Apple policy on programming tools
•  Alvarion posts Q1 loss