(Telecompaper) The GSMA has warned of a showdown between the US and EU at the upcoming World Radiocommunication Conference in Egypt. The ITU conference which occurs every four years will take key decisions on the frequencies designated for 5G development. The mobile industry group is concerned that Europe is taking too restrictive a stance on mmWave spectrum due to concerns about interference with existing applications and called on the region to take a more liberal approach, as the Americas have decided.