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Explain The Function Of GUAMI In 5G Network
- , by Stephanie Burrell
- 1 min reading time
The gNodeB (gNB) is the central component in a 5G network that communicates with user equipment (UE) and is responsible for managing radio resources. The gNB connects to the Access and Mobility Management Function (AMF) in the 5G Core Network (5GC). The AMF is responsible for handling the registration and mobility management of the UE.
The gNB communicates with the AMF using a signalling protocol called Next Generation Application Protocol (NGAP).
The 5GC may have many AMFs so for the gNB to communicate with an AMF it requires an address for the signalling messages. This address is known as a Globally Unique Access and Mobility Management Function Identity (GUAMI).
The format of a GUAMI = MCC + MNC + AMFI
MCC = Mobile Country Code
MNC = Mobile Network Code
AMFI = AMF Region Id + AMF Set Id + AMF Pointer
