Radio Access technology is like physically oriented technology (cdma, hspda, wcdma, gsm, umts) connection between mobile device and base station. From this technology we using radio access networks(3g,4g,lte).
Someone can tell in context of mme how interconnection between core network and radi access ( 2G, 3G ,4G ) can be done?
I want to understand beam forming concept and why it is considered for 5G ?