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Query about In Lte to UMTS/GRAN network handover??

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I have Query about In Lte to UMTS/GRAN network handover is it mandatory to configure S3 interface. Please Explain .

posted Jun 26, 2013 by Salil Agrawal

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2 Answers

+4 votes
 
Best answer

LTE has also to support handover to other 3GPP and non-3GPP interface. Ue can moves between GERAN/UTRAN to LTE or vice-versa. To support handover procedure between LTE and UTRAN/GERAN some interfaces have been introduced. S3 interface exists between MME and SGGN for control plane signalling. Similarly S4 interface between SGW and SGSN for user plane data.

answer Jun 26, 2013 by Vimal Kumar Mishra
+1 vote

Yes S3 is required for the control plane between SGSN and MME.

answer Jun 26, 2013 by anonymous
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