The major RAN vendors may not be feeling the pinch from Open RAN challengers just yet, but they will want to showcase their best new developments at this month’s Mobile World Congress to try to keep operators from being tempted away by new suppliers too soon. Ericsson kicked off, holding a pre-MWC event for analysts and media in London, where it discussed many aspects of its business, but inevitably placed new radios at front and center of its pitch. The Swedish firm bolstered its indoor wireless solutions, and added six families of macro radios based on its Ericsson Silicon platform. There was significant emphasis on the silicon innovations, as Ericsson seeks to convince operators of two important points. One, that…