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LTE: What does source MME execute "Relocation Cancel Procedure" ?

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LTE: What does source MME execute "Relocation Cancel Procedure" ?
posted May 8, 2014 by Vimal Kumar Mishra

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1 Answer

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A relocation cancel request message should be sent from the source MME/SGSN to the target MME/SGSN on the S3/S10/S16 interface as part of the inter-RAT handover cancel procedure and on the S16 interface as part of the SRNS relocation cancel procedure. A relocation cancellation typically happens if :

--- a relocation times expires in the source MME/RNC- this means the relocation handover cannot be performed within an expected time.
--- the UE cannot handover on the radio interface either because of defects in the UE software (as seen with early releases of HSDPA data cards) or because of the wrong radio interface parameters assigned by the target system (e.g wrong BCCG ARFCN of the GSM cell).

answer May 16, 2014 by Swarnima Singh
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