One of the important debates at Mobile World Congress next week will be that of LTE versus 5G – and Qualcomm has already managed to insert ‘6G’ into the discussion too. While the show will be full of trials and product plans for the newly standardized 5G New Radio, there has been an intensifying focus in recent months on the longevity of 4G. Operators may feel obliged to portray themselves as 5G frontrunners, for political or shareholder reasons, but the majority expect to enhance LTE for as much as a decade, alongside 5G. For vendors, then, one challenge is to keep revenues flowing by supporting those LTE enhancements, while not allowing that to delay operator investment in 5G. We expect…