NGMN Alliance urges finalisation Of Option 4 for 5G architecture The Next Generation Mobile Networks (NGMN) Alliance has released its latest White Paper urging the development finalisation of 5G architecture “Option 4” to support the full realisation of 5G. Its Option 4 recommendation will help many networks to bring new 5G-based services quickly and efficiently to market whilst also providing a future-proof evolution that maintains competitive user data rates for 5G users. A migration to 5G Standalone is an important evolutionary step for 5G with the introduction of a new 5G core network and the transfer of the master radio interface technology from LTE to New Radio (NR) technology.