Patent ID: 8787232

Claim:
A method of performing random access based on Extended Access class Barring (EAB) information for a user equipment (UE) in a wireless communication system using a number of orthogonal frequency division multiple (OFDM) symbols, the method performed by the UE and comprising: receiving Discontinuous Reception (DRX) information on a DRX cycle and a DRX offset from a base station (BS); performing a DRX operation based on the DRX information; determining whether the DRX cycle indicated by the DRX information is greater than a DRX cyclic threshold, wherein the DRX cyclic threshold is included in control information received from the BS; if the DRX cycle is greater than the DRX cyclic threshold, receiving a first system information block (SIB) to determine whether the EAB information has been changed and further receiving a second SIB to obtain changed EAB information when the first SIB indicates the EAB information has been changed; if the DRX cycle is not greater than the DRX cyclic threshold, receiving a paging message from the BS to determine whether the EAB information has been changed and further receiving the second SIB to obtain changed EAB information when the paging message indicates the EAB information has been changed; and performing an EAB operation based on the changed EAB information.