Japan’s number two telecoms operator KDDI Corp is working with local equipment manufacturer NEC Corp on field trials of Long Term Evolution (LTE) technology, which is scheduled for commercial launch in December 2012. Comtex reports that the trial started in October this year in a high population density urban area, using the 1500MHz band – one of its proposed bands for commercial rollout.
NEC also took part in a field trial conducted in the Nasu-Shiobara area in Tochigi Prefecture from March to August 2010. As well as handover testing, NEC carried out a service of tests on throughput verification during radio frequency interference between base stations when the network was congested. KDDI is looking to expand its broadband mobile coverage to 96.5% of the population by 31 March 2015.