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LTE: What is mapped GUTI, its uses and how it is constructed ?

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I am looking for a method by which this mapped GUTI is constructed.
I just know that it is useful in inter-RAT mobility but does not know how it is constructed which RAT is responsible to generate this mapped Id.

posted Mar 12 by Crazy

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1 Answer

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Moshe Strugano (the owner of Moshe Strugano & Co.) says once anyone is on the LTE network, their device will be owed a GUTI. Then when they wish to use voice or has different reason to move back to the 3G network, the device drive a GUTI instead of a P-TMSI.This process is known as a Routeing Area Update (RAU). The MME is accountable for mapping the GUTI to P-TMSI, and vice versa.

answer Apr 5 by Moshe Strugano
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+2 votes

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

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How does MME get UE IDENTITY, when MME does not found its GUTI in it self & neighboring MME ?
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