Patent ID: 8913539

Claim:
A method of updating enhanced multicast and broadcast service (E-MBS) related system information in an idle mode, the method comprising: receiving a first system configuration descriptor (SCD) message including an E-MBS related parameter from a base station; receiving a first message including an indicator indicating whether the E-MBS related parameter is changed from the base station; and performing a wake-up operation in the idle mode when the indicator indicates that the E-MBS related parameter is changed, wherein the indicator indicates whether an E-MBS related parameter included in an SCD message first transmitted after the first message is transmitted is changed, wherein the indicator is an SCD update indicator represented by a bitmap, wherein the first message further includes an SCD transmission time offset field indicating a time that a second SCD message including the changed E-MBS related parameter is transmitted, and wherein a size of the SCD transmission time offset field is determined according to a value of an E-MBS scheduling interval (EMI).