SIB Decoding in LTE

SIB decoding

i) Found Cell Access Related Information – #PLMN Identity List, #PLMN Identity, #TA Code, #Cell identity & #Cell Status
ii) Cell Selection Information – Minimum Receiver Level
iii) Scheduling Information – SI message type & Periodicity, SIB mapping Info, SI Window length

The UE has synchronized itself with the Cell with the help of #PSS and #SSS; followed by reading the MIB. Now, UE will proceed to read SIB1 and SIB2 which carriers important information for the UE to select a Cell. To know more about SIB’s and it’s working, click here

After the above process the UE is synchronized with the network in the Downlink direction and have read SIB1 and SIB 2. Now, it needs to synchronize in the Uplink direction

For this to happen, RAP (Random Access Procedure) is initiated