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LTE: Why does one to many relationship required between an eNodeB and multiple MMEs ?

+1 vote

We know, in lte, an eNodeB can connect to multiple MMEs. Can someone please explain in details ?
Apart from load balancing, is there any other reason ?

posted May 13, 2014 by Vimal Kumar Mishra

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Its not just load balancing, connection to the multiple MME make an inbuild redundancy in the system. In the UMTS/GSM operator need to install the MSC and an redundant MSC (in most of the cases) which can be saved here.

1 Answer

0 votes

LTE Ran-Sharing feature, eNodeB connects to multiple MMEs using s1-flex.

answer Jun 12, 2014 by Sanjeet Kumar
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+2 votes

I understood the basics of MOCN through which same eNodeB is controlled/used by multiple operators. Is it possible to do on dynamic basis ? if yes then what all things need to be coordinated among operators to make it happen smoothly ?

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Which parameters at eNodeB would be taken into consideration to trigger 'n' numbers of S1 connections with same MME or different MMEs ?
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+3 votes

Need clarity on following items:
1. What is the use of "UE selected plmn" information for an eNodeB ?
2. Is the ECGI/TAI constructed based on the primary plmn (PLMN broadcasted in 0th index in SIB1 ) or based on the UE selected PLMN ?

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