5G-GUTI – 5G Globally Unique Temporary Identity
The 5G-GUTI is used in 5G as a means to keep the subscriber’s IMSI confidential. At the time of network registration, the AMF (Core Access and Mobility Management Function) will allocated the 5G-GUTI, which is comprised of the GUAMI (Globally Unique AMF ID) and the 5G-TMSI (5G Temporary Mobile Subscriber Identity).
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