Ralf Keller

Ralf Keller has a PhD in Computer Science and joined Ericsson in 1996, and is today working with 5G Packet Core Architecture. He is an expert for multi-access and multi-media co-existence within Ericsson, and his work embraces technology studies and contribution to product strategies for mobile communication. This includes work on 5G System (5GS), communication services in 5G, migration to 5GS, and interworking and co-existence with legacy networks. He is also active in the GSMA, covering there 5G introduction and profiling of 5G and in the past VoLTE/ViLTE and Wi-Fi calling, including messaging, Open Market Devices, IMS / VoLTE roaming, IP Communication UNI and alignment with 3GPP.