Thailand’s mobile market leader Advanced Info Service (AIS) will begin testing its fourth-generation (4G) mobile broadband network based on Long Term Evolution (LTE) technology in partnership with state-owned operators TOT and CAT Telecom on 31 January ‘or early February at the latest’, the Bangkok Post reports, quoting AIS’s CEO, Wichian Mektrakarn. The executive said the company will conduct a non-commercial LTE trial with TOT using 2.3GHz band frequencies and 84 cell sites in Bangkok and other key provinces. TOT will use 20MHz of its total 64MHz allocation in the band for the trial, the report said. Simultaneously, AIS plans to launch another non-commercial LTE trial with CAT using the latter’s 1800MHz spectrum. The National Broadcasting and Telecommunications Commission (NBTC) has approved the joint applications of AIS/TOT and AIS/CAT to offer LTE 4G trials for 90 days, with an extension for a further 90 days. True Corp, which offers 2G and 3G mobile services under the True Move and True Move H names, has also asked permission from the NBTC to test 4G using 1800MHz frequencies.