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LTE: In which scenarios, an eNodeB initiates PDCCH order ?

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LTE: In which scenarios, an eNodeB initiates PDCCH order ?
posted Mar 17, 2018 by Harshita

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1 Answer

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when UE enter in unsynchronization state in RRC-CONNECTED, and network want to send data, network shall use PDCCH order to inform UE.
In short, When UE is in RRC connected state & Time Alignment timer expires in MAC layer and UE is considered uplink out-of-sync now.
If there is DL data in eNB buffer for UE but first UE has to be brought back to in-sync state and also it needs to reconfigured again with PUCCH/SRS resources.eNB sends PDCCH order to UE using DCI 1A format.

answer Mar 17, 2018 by Mohit Mohan
Thanks to answer this question. Well explained.
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