Cable hedges its wireless bets

It's mobile or bust for cable operators that seem to be trying anything and everything to get into the wireless market.
One of the biggest shifts over the next decade in the cable market is likely to be a move toward wireless services. As cable operators face stiff competition from phone companies, cable operators large and small are looking for ways to take their services mobile.
Brian Roberts, CEO of Comcast, the largest cable operator in the U.S., talked up his company's investment in a new joint venture to blanket the country with 4G, or fourth-generation, wireless at the industry's trade show in New Orleans this week.
Earlier this month, Comcast and Time Warner joined forces with Sprint Nextel and Clearwire to form a company that will build the next-generation wireless network using a technology called WiMax. Comcast is fronting $1.05 billion as part of the deal, and Time Warner Cable is putting in $500 million to help make the new network a reality.