Japanese carrier NTT DoCoMo said Wednesday that it has recorded a downlink transmission rate of 250Mbps over its experimental 'Super 3G' high speed wireless network.
DoCoMo has been field-testing and refining its Super 3G system, known by almost everyone in the industry as LTE (Long Term Evolution), using an outdoor testing environment near its R&D labs in Yokosuka, just south of Tokyo, since February.
The testbed involves four Multiple Input Multiple Output (MIMO) antennas for base station transmission and mobile station reception in the 20MHz bandwidth.
DoCoMo said it is continuing to test connection handover from one base station to another along with the functionality of applications in indoor and outdoor environments.
The operator began accepting proposals from suppliers for LTE test equipment in July 2006. By 2009, the company expects to complete development of the technologies required for the eventual launch of a Super 3G network.
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