PRUs) LSB-FPi = N1 * Number of mini-bands KSB-FPi assigned to FPi LMB-FPi = N2 * Number of PRUs KMB-FPi assigned to sub-bands in FPi Sector CRU/DRU DCASSBO (5/4/3) S-SFH LSB-CRU-FPi Number of sub-band Specific Allocation Sub-packet 1 CRUs in FPi DCASM MBO (5/4/3) LMB-CRU-FPi Number of mini-band CRUs in FPi DCAS (3/2/1) LCRU-FPi = Number of CRUs in FPi LSB-CRU-FPi + LMB-CRU-FPi LDRU-FPi = FPSi - Number of DRUs in FPi LCRU-FPi Obtained from Permutation SA-Preamble 9.8 Subchannelization and permutation granularity of the sub-carrier permutation is equal to a pair of sub-carriers. After mapping all pilots, the available sub-carriers are used to define the distributed LRUs. To allocate the LRUs, the remaining sub-carriers are paired into adjacent tone-pairs. Each LRU consists of a group of tone-pairs. Let's assume that there are NRU DRUs. A permutation sequence PermSeq(.) for the distributed group is defined and the subchannelization for downlink distributed resource allocations is performed using the following procedure. The permutation sequence is of length LDRU-FPi and is determined by SEED = {343IDcell} mod 210. where the IDcell parameter is the cell identifier associated with the serving cell. The permutation sequence is generated by the random sequence generation algorithm specified in reference [2]. For the kth OFDM symbol in the subframe: 1. Let Nk denote the number of pilot sub-carriers in the kth OFDM symbol within a PRU, allocate Nk pilots in the kth OFDM symbol within each PRU; 2. Let NRU denote the number of DRUs within the Frequency Partition (FP), renumber the remaining NRU(Psc - 1 nk) data sub-carriers of the DRUs and reorder from 0 to NRU(Psc - nk) - 1 sub-carriers; 3. Group these contiguous and logically renumbered sub-carriers into NRU(Psc - nk)/2 pairs and renumber them from 10toNRU(Psc-nk)/2- - 4. Apply the sub-carrier permutation formula with the permutation sequence PermSeq(.) or data sub- carrier pairs; 5. Map each set of logically contiguous (Psc nk) sub-carriers into distributed LRUs and form