allocate larger amounts of radio resources to a user. It has a similar format compared to the DL Basic Assignment A-MAP IE except the A-MAP IE Type and the Resource Index fields are defined differently. The A-MAP IE Type field is set to 0b0010 and the Resource Index field is 11-bits, regardless of the system bandwidth. In all cases, the BS or the MS perform the following pre- processing steps to derive the parameters that are used in the indexing and in interpretation of the RA field. The mapping between the sub-band logical resource unit (SLRU) index and the PRU index depends on the total number of sub-bands over all partitions. The MEF field is one bit whose value (0b0 or 0b1) indicates horizontal or vertical coding. There is a one-bit flag following the MEF field known as the Mode-Indicator field which is interpreted differently according to the number of sub-bands in all partitions. The total number of sub-bands over all partitions is found by CHAPTER 10 The IEEE 802. 16m Physical Layer (Part II) Table 10-5 UL Basic Assignment A-MAP IE Parameters [2] Information Field Size (Bits) Description A-MAP IE Type UL Basic Assignment A-MAP IE. SizeOffset The offset that is used to calculate burst size index. Number of Streams in There can be up to 4 uplink streams per MS provided that the Uplink Transmission number of streams are less than or equal the number of MS transmit antennas. SU-MIMO/Precoding Matrix This is a flag to indicate whether both SU-MIMO and PMI are Index (PMI) Indicator signaled (SU-MIMO without PMI indication or Collaborative Spatial Multiplexing without PMI indication, SU-MIMO with PMI indication). Collaborative Spatial This is a flag to indicate use of CSM or SU-MIMO mode when Multiplexing (CSM) no PMI indication. MIMO Encoder Format This is an indicator for the MIMO encoding mode that is used in the uplink (SFBC or vertical encoding). Non-adaptive precoding is used at the MS with SFBC mode. Precoding Flag This is the precoding flag for SU-MIMO when PMI is not signaled (Non-adaptive precoding, Ad