IEs, DL/UL subframes, and DL/UL data bursts are not drawn to scale and the actual sizes may differ depending on the type of the MAP. Among the legacy MAP structures, the HARQ MAP structure is of more practical interest. The HARQ MAP management message includes a compressed/compact DL/ UL-MAP IE and defines the access information for the DL and UL burst of HARQ-enabled mobile stations. This message is sent without a generic MAC header. The BS may broadcast multiple HARQ MAP messages using multiple bursts after the MAP message. Each HARQ MAP message has a different modulation and coding rate. The DL-MAP IEs in the MAP message describe the location and coding and modulation schemes of the bursts. The order of DL-MAP IEs in the MAP message and the bursts for HARQ MAP messages is determined by the coding and modulation scheme of the burst. The burst for a HARQ MAP message with a lower rate coding and modulation is placed before other bursts for the HARQ MAP message. The presence of the HARQ MAP message format is indicated by the contents of the of the first data byte of a burst [1]. The trade-off between the efficiency and reliability of the control channels resulted in the design of new individually coded MAPs for the IEEE 802.16m systems. While the jointly coded MAPs can be more efficient, since the overhead is shared among the users, they cannot be equally reliable for geographically-dispersed users in the cell with various channel conditions. The individually-coded MAPs are conceptually similar to legacy sub- MAPs when containing allocations of a single user. The main difference between the legacy jointly- coded MAPs and the new individually-coded MAPs is that the legacy MAPs are time-division multiplexed with data, whereas the new MAPs are frequency-division multiplexed with data. The FDM and TDM schemes have advantages and disadvantages in terms of MS power-saving, efficiency of user resource allocations, and transmission reliability of the control messages. As shown in Figure 10-1, the control signaling in the 