LTE- UPLINK Physical layer Singnalling.

Up link L1/L2 control signalling is divided into two classes in the LTE system

1. Control signalling in absence of up-link data , which is done by PUCCH ( Physical up-link control channel) i.e when the UE is in IDLE Mode and has no dedicated resources allocated to it, only then the control signalling is carried on PUCCH.

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System Information Blocks and their contents

SIB 1: Cell access related parameters and scheduling

SIB 2: Common and shared channel configuration

SIB 3: Parameters required for intra-frequency cell reselections

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