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WCDMA SIB(System Information Block) types


This tutorial section on WCDMA (UMTS) basics covers following sub topics:
UMTS Tutorial  UMTS channels  measurements  PHY layer  TDD vs FDD PHY  RRC States  Security  Cell search  Bands  UARFCN  Frame 


This page covers WCDMA SIB(System Information Block) types. SIB messages in UMTS include MIB,Scheduling block1,Scheduling block2,SIB1,SIB2,SIB3,SIB4,SIB5,SIB6,SIB7,SIB8,SIB9,SIB10,SIB11,SIB12,SIB13,SIB13.4,SIB14,SIB15,SIB15.4,SIB16,SIB17 and SIB18.

MIB which stands for Mian Index for System Information carry scheduling information on SIBs, Scheduling block1 and Scheduling block2. Both scheduling blocks are optional and will also be used for SIBs.

System information block in UMTS type Function(Information carried)
SIB1 NAS information,timer related information mainly used in IDLE/CONNECTED Mode
SIB2 available URAs(max. 8 URAs in a cell)
SIB3 cell selection/reselection parameters used by UE in IDLE mode, if SIB4 is not present then it can also be used by UEs(in CONNECTED MODE).
SIB4 cell selection/reselection parameters used by UE in CONNECTED mode,if not present SIB3 to be used by UE
SIB5 Carry info. on common physical channels(PICH/AICH/P-CCPCH/PRACH/SCCPCH) for UE(in IDLE mode), in the absence of SIB6 it is also used for UE in CONNECTED state.
SIB6 Carry info. on common physical channels(PICH/AICH/P-CCPCH/PRACH/SCCPCH) for UE(in CONNECTED mode), in the absence of SIB6, UE need to use SIB5
SIB7 carry fast changing cell parameter informations(uplink interference levels,dynamic persistence value)
SIB8 carry static information for CPCH (only for FDD use)
SIB9 carry dynamic information for CPCH (only for FDD use)
SIB10 DRAC procedure related information(sent over FACH channel)
SIB11 carry measurement control information(UE in IDLE mode), If SIB12 is absent it is also used for UE in CONNECTED mode.
SIB12 carry measurement control information(UE in CONNECTED mode), If SIB12 is absent, SIB11 can be used by UE
SIB13-SIB13.4 carry ANSI-41 parameter related informations used for ANSI-41 core networks.
SIB14 carry outer loop power control information(TDD mode use only),used over dedicated and common physical channels.
SIB15-SIB15.4 carry information used for UE positioning methods(e.g. GPS/OTDOA)
SIB16 carry information related to channel configuration used for handover
SIB17 carry information on shared common channels(to be used in CONNECTED mode,TDD use)
SIB18 carry PLMN identities of neighbouring cells(used by UE in IDLE/CONNECTED MODE)

Useful Links

What is WCDMA
FDMA vs TDMA vs CDMA
WCDMA MO CS call
WCDMA PS Call
CDMA vs GSM
WCDMA Compressed mode
Cell re-selection in GSM/WCDMA
IRAT handover GSM/WCDMA
Difference between TD-SCDMA,WCDMA,CDMA2000

RF and Wireless Terminologies


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