China Mobile Communications Corp and Clearwire Corp (CLWR.O) have teamed up to develop high-speed mobile devices and infrastructure, potentially giving the cash-strapped U.S. 4G operator a technological boost.

Shares of Clearwire were up 8 percent at $2.76 after a brief trading suspension.

Under their agreement, the world's largest telecoms carrier by users will work on chipsets and devices for TD-LTE, a 4G wireless technology, that should be available by 2012.

Clearwire announced in August it was looking for almost $1 billion in funding to help upgrade its network with Long Term Evolution (LTE) -- an emerging high-speed technology. TD-LTE is a variant on that standard. [ID:nN1E7721OG]

Sprint Nextel Corp (S.N) has held talks with cable partners about supporting their loss-making Clearwire wireless venture in the face of increasing competition from bigger rivals, sources have said.

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