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LTE handover: How would be handled this particular scenario under Forward handover ?

+3 votes
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I have a use case for forward handover.

What will happen, when UE moves to target eNodeB through forward handover and target eNodeB is connected to a new MME.
I mean to ask what will happen with old session which is already maintained at MME, SGW and PGW. Definitely there is a loss of data packet since UE has already moved to some other eNodeB (target eNodeB) due to RLF.

When UE shal attach to new MME, MME shall send create session request to SGW, and SGW forward it to PGW.
Now question is that how PGW handle this situation, when it receives a new create session request from a new MME for an already existing session(via old mme).

related to an answer for: LTE : How does Forward handover works ?
posted Feb 17, 2014 by Harshita

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