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Can UE send C-RNTI MAC CE to eNodeB in case of re-establishment?

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As UE has valid C-RNTI , can eNodeB confirms same previous RNTI to UE on occasion of successful re-establishment?

posted Oct 18, 2016 by Suchakravarthi Sripathi

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1 Answer

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Hi,

Yes, If UE includes MAC CE in MSG3 then ENB will confirm the previous valid rnti

answer Oct 18, 2016 by Jaganathan
But is it true that UE can Send C-rnti CE in case of Re-establishment?
Yes, MAC CE will come only in case of contention based RACH (only re-establishment, TA expires,SR unavailable etc).
As i observed in logs ..... RNTI was changing before and after re-establishment ... If UE can C-RNTI CE eNB should allocate same RNTI even after re-establishment right ?
Then UE might not send an MAC CE and only sends an RRC reestablishment , then RRC will intimate MAC to delete the old RNTI context.
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