top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Data flow in DRX?

+1 vote
311 views

I have a solid doubt in data flow while DRX is running on UE. When there is a drx short cycle is running ion UE , if eNB wants to send data there whether it will wait for UE to come out from DRX ON state or it can send at any time. What about paging if some ETWS or CMAS paging is there in cell will UE will read paging in DRX cycle?? Also, Clear the difference between UE specific DRX and Cell specific DRX?

posted Apr 15, 2016 by Chotu Vats

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

When UE is in DRX cycle (short/long) UE will not read Pdcch so eNB has to wait for UE to come in on duration for getting DL data. If eNB sends any data during DRX cycle not in on duration then UE will not be able to receive the data. UE will read Paging also in on duration time and will not be able to read during DRX cycle.
ENB broadcast cell specific DRX parameter in sib2. UE sends UE specific DRX to MME in attach request/TAU message. MME inform eNB about UE specific DRX in Paging msg so that eNB can broadcast the paging at minimum of ue specific or cell specific drx in cell.

answer Apr 15, 2016 by Veer Pal Singh Yadav
Similar Questions
0 votes

I went through the call flow diagram that is shown in 23.401 specification and tried to understand data flow (down link and up link both) through indirect data tunnels. I was bit confused that's why post my query here.

+1 vote

suppose UE is in DRX mode and went to sleep. If UE sends any data to ENB, Will the ENB receives this data or just ignore as it is in idle state?

...