ion in the second UL subframe relevant to an A-MAP region. User Bitmap Variable Bitmap to identify scheduled mobile stations in a group. The size of the bitmap is equal to the User Bitmap Size signaled to each MS in the Group configuration MAC control message: ObO MS not allocated in this subframe; 0b1 MS allocated in this subframe. Resource Offset Indicates starting LRU for resource assignment to this group. HARQ Feedback Indicates the start of the HARQ feedback channel index used for Allocation Offset scheduled allocations. MIMO Bitmap Variable Bitmap to indicate MIMO mode for the scheduled mobile stations: Obo Mode 0; 0b1 Mode 1. Resource Variable Bitmap which indicates burst size/resource size for each Assignment Bitmap scheduled MS. The resource allocation bitmap uses 5 bits per flow to signal the HARQ burst size and the resource size for the user allocation in that subframe. The first 2 bits signal the HARQ burst size and the next 3 bits signal the resource size. The 2-bit and 3-bit codes for burst sizes and resource sizes respectively for the group are determined by each MS based on the information in the Group Configuration MAC control message. feedback for MIMO feedback mode 0 with Measurement Method Indication = Ob0, and MIMO feedback modes 4 or 7, the MS feeds back the CQI for FP0, if FPS0 > 0 or for FPk if FPS = 0, where FPk is determined by frequency partition index 0,1,2,3. The MIMO feedback reported by an MS in frame N pertains to measurements performed at least up to frame N-1. The first MIMO feedback report following the Feedback Polling A-MAP IE may contain invalid MIMO feedback information, if the MIMO feedback is sent in the frame immediately following the frame in which the Feedback Polling A-MAP IE was received [2]. Table 10-13 shows the parameters and their corresponding values in the feedback polling information element. The Bandwidth Request (BR) Acknowledgement A-MAP IE indicates the decoding status of the bandwidth request opportunities in the uplink frame that is identified by the BR A