China Mobile and Clearwire has agreed on common test specifications and joint interoperability testing (IOT) for TD-LTE devices in the global band configurations, including 2.3GHz to 2.7GHz in conjunction with the Global TD-LTE Initiative (GTI). This will enable the companies to further accelerate development of the TD-LTE device ecosystem, especially in multi-mode, multi-band LTE devices.

Beginning this month, China Mobile, Clearwire and other GTI operators will establish 4G mobile broadband labs featuring a joint test platform and IOT environment for TD-LTE devices. The expected availability of the Quad-Band LTE 2.3-2.7 GHz spectrum range, in addition to certain other bands like 1.9GHz, as well as FDD and TD-LTE mobility interactions, makes it an ideal global configuration for mass 4G marketing worldwide. The labs will allow for the evaluation and qualification of commercial TD-LTE devices simultaneously in the U.S., China, and other promising markets, using common testing methodology, equipment, and infrastructure.

Clearwire plans to conduct its TD-LTE common IOT in Phoenix, AZ and Herndon, VA. China Mobile's testing will be carried out in Beijing and other TD-LTE trial cities. The joint test platforms will be open for device IOT by key participants in early 2012