Sprint and Clearwire Might Go LTE for 4G

Sprint Nextel and Clearwire executives have said for some time that WiMAX and Long Term Evolution are similar enough that Clearwire could switch to LTE at some point. But that is more likely to happen when another technology migration to "fifth-generation" technology happens, not in the fourth generation.

In one respect, battles over air interface are simply part of the mobility business. Just as AT&T and T-Mobile opted for the GSM air interface while Sprint and Verizon opted for the rival CDMA air interface, and similar battles were fought over 2G standards, carriers will have to migrate their platforms over time, just as they always have.

The evolution from GSM (3G) to LTE (4G) will still require a new network, with a new air interface, operating on discrete spectrum and requiring new handsets and software. For that reason, each technology generation requires a fork lift upgrade and a refresh of consumer terminals as well. That's just part of the business.

So though Clearwire and Sprint chose WiMAX for 4G, their options for 5G remain open, and both Dan Hesse, Sprint CEO, and Bill Morrow, Clearwire CEO, say they could opt for an LTE derivative for 5G.

Hesse says the choice of WiMAX was based on the fact that Sprint could not wait for LTE standards to jell. It had a business need to move, so it did. "WiMax was tried-and-true tested technology at the time we made the choice," he says. "We couldn't wait."

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