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LTE : What is th use of "Tunnel Information for BBF" IE carrying within the handover notify message ?

+2 votes
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LTE : What is th use of "Tunnel Information for BBF" IE carrying within the handover notify message ?
posted Feb 11, 2016 by Harshita

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+2 votes

In case of S1-handover with the MME relocation, source MME sends an information "Target Identification" to target MME.
What the target MME does by receiving TAC, when an enodeb can be identified uniquely by using combination of (PLMN + Macro/Home ENodeB) ?

Can someone tell me what the purpose behind to send TAC as part of Target Id IE ?

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what will happen if i didnt include it in handover request message?

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I found two MME UE S1-AP IDs i.e. MME UE S1AP ID (Mandatory) and MME UE S1AP ID 2 (optional).
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