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LTE: What are actions taken at source eNodeB or MME in case of partial resource allocation as part of HO procedure?

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When target eNodeB is not able to allocate resource for all the bearers which comes as part of Handover Request message, it sends handover request ack with partial success since "E-RABs Failed to Setup List" is present in HOReqAck message.
What MME or source eNodeB does in that case ? Does any action taken by MME for the E-RABs which failed to setup at target eNodeB or some other actions taken ?

posted May 29, 2014 by Vimal Kumar Mishra

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1 Answer

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I think, MME will delete the bearers which failed to setup at target eNodeB and it shall instruct to source eNodeB to release the bearer using "ERAB Release list" within the HO Command message.
Source eNodeB shall include "bearer release" and mobility info within the rrc connection reconfiguration message and send to UE.

answer May 29, 2014 by Harshita
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