Some 39 operators, equating to around 1 in 8 LTE operators, have commercially launched LTE TDD (TD-LTE) systems in 26 countries, according to latest figures from the Global mobile Suppliers Association (GSA). Another 48 operators are currently deploying or planning networks. Added to this are a number of operators that are undertaking technology trials and studies. The GSA has calculated, therefore, that almost 120 operators globally are investing in TD-LTE. Within the current total of 39 commercially launched TD-LTE networks, 13 operators have launched converged systems using both TDD and FDD mode in the networks. GSA confirms this is a growing industry trend. For example, some operators in India are deploying converged networks using LTE FDD 1800 MHz (band 3) and TDD 2.3 GHz (band 40) spectrum, which is a combination supported by 152 user terminals. Release