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LTE: How does MME make out that a user belong to the home network or roaming one ?

+1 vote
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LTE: How does MME make out that a user belong to the home network or roaming one ?
posted Jan 7, 2016 by Vimal Kumar Mishra

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2 Answers

+1 vote

I found different inputs from the different audience. But what I know and believe "when an UE IMSI PLMN does not match with the PLMN being served by MME , is considered as roaming UE".

answer Jan 8, 2016 by Harshita
Even I have the same understanding !
Does the MME serve an UE who's IMSI PLMN not matching with the MME PLMN ?
As my understanding Roaming decision will be taken with help of HLR and VLR . If PLMN is part of equivalent PLMN list then MME serves.
0 votes

IMSI = MCC + MNC + MSIN
PLMN = MCC + MNC

If MCC and MNC of IMSI does not match with MCC and MNC of PLMN, then that UE is considered as roaming.

answer Dec 28, 2020 by Manje Gowda K.r.
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