type mac header message received from the ms if there is a dcd count value change report or a diuc change request when there is a diuc change request the bs changes the diuc according to the request of the ms in step 529 as a result of the determination in step 527 when there is a dcd count value change report the bs transmits a data to ms based on the diuc of the downlink burst profile of the dcd message corresponding to the dcd count value currently stored in the ms or holds the data transmission until the bs transmits the dcd message to the ms in step 531 when there is neither a dcd count value change report nor a diuc change request as a result of the determination in step 527 the bs proceeds directly to step 533 in step 533 the bs controls the ms to transit into an awake mode and then terminates the process according to the present invention when a dcd message changes i e when a downlink burst profile changes in a sleep mode of a broadband wireless access communication system using an ofdm ofdma scheme e g an ieee 802 16e communication system or when it is necessary to change the diuc of the ms due to the change in the cinr of the ms the.