ources by the MS in the number of bytes associated with the CID. 0b001 Aggregate Bandwidth Request The amount of requested resources by the MS in the number of bytes associated with the CID. 0b010 Physical Channel Report UL maximum transmit power headroom in dB for the burst that carries this header ranges from 0 to 63 in 1 dB steps. The reported value represents the difference between the maximum output power and the maximum power transmitted during the burst, index of the Downlink Interval Usage Code (DIUC) preferred by the MS, as well as UL transmit power level in dBm for this burst. 0b011 Bandwidth Request with Uplink The amount of requested resources by the MS in the Transmit Power Report number of bytes associated with the CID and uplink power level in dBm for the burst that carries this header. 0b100 Bandwidth Request and Carrier to The amount of requested resources by the MS in the Interference plus Noise (CINR) Report number of bytes associated with the CID. The CINR is a single value from -16.0 dB to 47.5 dB in units of 0.5 dB measured by the MS in the DL. The Downlink Channel Descriptor (DCD) change indicator is set to 1 if the DCD change count stored at the MS is not equal to that in the received DL-MAP message. 0b101 Bandwidth Request and Uplink Sleep Power saving class identifier. Control Report Ob110 ARQ Block Serial Number (BSN) or The ARQ BSN or MAC SDU SN for the service flow MAC SDU Serial Number (SN) addressed in this header. Ob111 Channel Quality Indicator Channel The MS-preferred CQICH allocation period in units of (CQICH) Allocation Request frames. Indication is set to 1 for a feedback header with the CID field, and is set to 0 for a feedback header without the CID field. The feedback type in Figure 6-9 is used as shown in Table 6-4. The MIMO channel feedback header is used for MS to provide DL MIMO channel quality feedback to the BS. The MIMO channel feedback header can be used to provide a single or composite channel feedback. 6.3.2 IEEE 802. 16m Signaling Headers The MAC signaling header