The latest row has broken out over LTE-Unlicensed technologies, as the telecoms industry – particularly in the US – splits between those with spectrum and those aiming to become major wireless players via WiFi. Qualcomm, T-Mobile USA and others have written to the FCC with a strongly worded objection to a new request, from the WiFi Alliance (WFA), that it effectively takes over coexistence testing between LTE running in the 5 GHz band, and WiFi. The Alliance has expressed concerns that LTE would adversely affect WiFi, and other WiFi players, including the cable industry R&D body CableLabs, have been more outspoken, with some accusing the cellular companies of conducting inadequate tests or presenting over-optimistic results. The issue is particularly urgent…