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LTE: When UE triggers integrity protected Attach request and when it sends as plain NAS message ?

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From UE point of view, I want to know when UE triggers integrity protected Attach request and when it sends as plain message ?

posted Apr 29, 2018 by Ganesh

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1 Answer

+2 votes

Initial UE attach request should be plain NAS message. UE can be send integrity protected re-attach message. if integrity fails at MME, then MME will reject this attach. Now UE will send attach request as NAS plain message

answer Apr 30, 2018 by Althi Rajeswararao
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