what is the difference between native GUTI and mapped GUTI?

Question

In LTE, during intital attach, UE will include Native or Mapped GUTI.. But what is mean by Native or mapped GUTI?

Thanks in advance

Answer 1

Native Guti assigned by MME which is local to MME,but mapped GUTI as name suggests it is derived from 3G IEs like PTMSI and RAI.