A method for receiving multicast and broadcast service (MBS) data from a base station to a mobile station comprises receiving a sub-packet from the base station in accordance with a predetermined period, the sub-packet including information associated with initial network entry and network discovery included in a secondary-super frame header (S-SFH); and receiving a first MBS MAP from the base station, the first MBS MAP including an S-SFH sub-packet update indicator indicating whether a parameter included in the sub-packet has been changed, wherein the S-SFH sub-packet update indicator indicates whether the changed sub-packet has been transmitted within an MBS scheduling interval (MSI) for which the first MBS MAP is transmitted.