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Are there any situations when IMSI is transferred over X2 interface between two eNodeB's?

+3 votes
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Are there any situations when IMSI is transferred over X2 interface between two eNodeB's? The only case of IMSI transmission I know is over S1 interface during initial attach request, and GUTI is used in all other cases.

posted Feb 20, 2015 by anonymous

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+1 vote

In case of hub-and-spoke topology, X2 messaging can travel all the way back to an aggregation point, which may be co-located with EPC. In such scenario both X2 and S1 traverses same physical path (a.k.a X2 over S1). Please consider both Intra-MME and Inter-MME handover scenarios. Would X2 based handover in such a case yield advantage over S1 based handover. Thanks.

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