Monday, 9 June 2014

System Information Block in LTE (SIB)

SIB’s
Details
SIB-1
Cell access related parameters and scheduling of other SIBs
SIB-2
Common and shared channel configuration, RACH related configuration are present
SIB-3
Parameters required for intra-frequency, inter-frequency and I-RAT cell re-selections
SIB-4
Information regarding INTRA-frequency neighboring cells (E-UTRA)
SIB-5
Information regarding INTER-frequency neighboring cells (E-UTRA)
SIB-6
Information for re-selection to INTER-RAT (UTRAN cells)
SIB-7
Information for re-selection to INTER-RAT (GERAN cells)
SIB-8
Information for re-selection to INTER-RAT (CDMA2000)
SIB-9
Information related to Home eNodeB  (FEMTOCELL)
SIB-10
ETWS (Earthquake and Tsunami Warning System) information (Primary notification)
SIB-11
ETWS (Earthquake and Tsunami Warning System) information (Secondary notification)
SIB-12
Commercial Mobile Alert Service (CMAS) information.
SIB-13
Contains the information required to acquire the MBMS control information associated with one or more MBSFN areas.

Scenarios where UE acquire SIBs:
Ø   UE is powered on (selecting a cell)
Ø   Cell re-selection
Ø   After HO completion
Ø   After entering E-UTRAN from another RAT
Ø   coming out of OUT OF COVERAGE situation
Ø   receiving a notification that SYSTEM INFORMATION has changed
Ø   receiving an indication about the presence of ETWS (Primary/Secondary), CMAS notification
Ø   receiving a request from CDMA 2000 upper layers

Ø   exceeding the maximum validity duration of SIBs

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