GUAMI (Globally Unique AMF Identifier)
Also known as: Globally Unique AMF Identifier
A GUAMI is the 5G identifier that uniquely names a specific AMF instance in a specific PLMN, composed of PLMN ID, AMF Region ID, AMF Set ID and AMF Pointer. GUAMIs are used inside 5G-GUTIs and in inter-AMF handover signalling so that any node can route a UE context to the correct AMF.
Categories: Core Network
GUAMI in context
The mobile core carries subscriber sessions, mobility and policy. In 4G it is the EPC (MME, HSS, S/PGW); in 5G it is the Service-Based Architecture with AMF, SMF, UPF, AUSF, UDM and the NRF.
To place GUAMI in the wider telecom-security picture, review 5G, 5G SA, 5G NSA, 5G SBA, ACL and AES — each entry cross-references back to this page so you can walk the topic in either direction.
Related terms
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