Quick information to know about 4G S-TMSI and 5G S-TMSI

What are 4G S-TMSI and 5G S-TMSI?

  • 4G S-TMSI, and is part of GUTI, it is used to identify a UE within a specific MME Pool.
  • 5G S-TMSI can be used to identify a UE within a specific AMF Region.

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