top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration

Facebook Login
Site Registration

How UE distinguished from SIB modification paging to which SIB modified?

+1 vote

UE Receives SIB modification through paging message. But how UE will get to know which SIB is modified?

posted Jun 20, 2019 by Sakshi Rai

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

2 Answers

0 votes

UE don't get any notification of which MIB/SIB is being modified, UE will be in DRX connected mode, UE wakes up and read the downlink shared channel(PBCH and PDSCH). But will be unaware of which MIB/SIB are modified

answer Jun 20, 2019 by Sushant Bose
After receiving paging, then How UE will acquire SIB, UE should know which SIB is modified right?
0 votes

Example : SIB-3 is modified at the eNB

  1. paging message will be broadcasted to all the UEs
  2. UEs will receive PRNTI (0XFFFE) in PDCCH channel when it wakes up at idle mode or connected mode DRX
  3. Paging message will be received at PDSCH channel
  4. RRC will (ASN) decode the PCCH/paging message being received (PHY->L2->RRC)
  5. If the IE systemInfoModification is set to true in the paging message, then RRC will send SI acquisition request to PHY
  6. PHY will acquire SIB-1 and then RRC decodes SIB-1; periodicity and windowLength of SIB-3 will be obtained.
  7. RRC will send these informations to PHY; the PHY will acquire SIB-3 and forwards to RRC.
  8. RRC will (ASN) decode modified SIB-3
answer Dec 9, 2020 by Manje Gowda K.r.
Similar Questions
Contact Us
+91 9880187415
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Karnataka INDIA.