Japan's largest telecommunications company, NTT DoCoMo, plans to begin tests of WiMax technology as early as next month, said Masao Nakamura, president and CEO on Tuesday.

Nakamura, who shared only a few details of the planned tests, confirmed that NTT DoCoMo would take part.

WiMax is a high-speed wireless data transmission technology with benefits that fall between existing wired and cellular technologies. Tests of the technology are already underway in several countries and certification of WiMax equipment has begun.

How long the tests will run is unclear, however.

"We're not going to be all that slow," said Nakamura. "It's not going to be a drawn out process, hopefully. We hope to be able to do something starting from next month."

The tests will look at a number of issues including actual throughput and potential interference to other services, he said.