of sub-band-based CRUs for FP0 is given as LSB-CRU-FPO = N1 X UCASSBO- A summary of uplink subchannelization and permutation parameters are given in Table 9-4. Figure 9-27 illustrates an example of the sub-band partitioning, mini-band permutation, frequency partitioning, and cell-specific resource mapping (CRU/DRU allocation) procedures for a 10 MHz system bandwidth. In this example, KSB = USAC = FPCT = 4, FPSi = 12 (for > 0), UFPSC UCASSBC = 1, UCASMBO = 1, UCAS and IDcell 2. An example uplink tile permutation is further shown in Figure 9-28. Each of the DRUs of a UL frequency partition is divided into three tiles of six adjacent sub-carriers over Nsym OFDM symbols. The tiles within a frequency partition are collectively tile-permuted to obtain frequency-diversity across the allocated resources. The tile permutation allocates physical tiles of the DRUs to logical tiles of subchannels. The distributed LRUs in each uplink frequency partition may be further divided into data, band- width request, and feedback regions. A feedback region consists of feedback channels that can be used for both HARQ ACK/NACK and fast-feedback. In a multicarrier system with active downlink-only RF carriers, the primary UL RF carrier may contain multiple feedback regions for the primary downlink RF carrier and the active downlink-only RF carriers. The primary uplink RF carrier should contain one feedback region corresponding to each DL RF carrier with predefined mapping. The allocation order of data channels and UL control channels are UL HARQ feedback channels, UL fast-feedback channels, UL bandwidth request channels, and UL data channels. If fractional frequency reuse is used in a UL subframe, the UL control channels can be allocated in the reuse-1 partition or the highest- power reuse-3 partition. The number of bandwidth request channels in frequency partition FPi in a UL subframe is NBWR where the value of NBWR is 1 in MZone and 2 in LZone with UL-PUSC. In MZone, the bandwidth request channels are of the same size as LRUs, i.e., thre