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

0 votes
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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
Similar Questions
+1 vote

I have worked in LTE technology and observed the data rate through LTE network. We know , LTE deployment is on going and it will take few years to roll out completely in India. When a LTE UE attaches to network and handover to UMTS due to mobility then is there any change in data rate ? If yes, then how this change is communicated to UE. I mean to say what signalling messages exchange in network ?

+3 votes

Please suggest some pointer about Lte to UMTS/GERAN network handover -
1. Which are the interfaces got involved.
2. What is the role of diameter (interface) specifically.
3. If call is Voice (VoLTE) then is there any impact.

+2 votes

This query come out to give answer one of the query. Is really UE should perform combined attach procedure( EPS and non-EPS) for handover between LTE to other 3GPP technology like UMTS/GERAN ?

+3 votes

Can there be inter PDN handover in LTE or UMTS if yes then please explain the procedure.

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