TID assignment. The maximum number of the HARQ re-transmission is set to the default value and HARQ re-transmission control information cannot be changed during the re-transmission process. The parameters of the CDMA Allocation A-MAP information element and their corresponding values are shown in Table 10-9. In wireless networks, persistent scheduling takes advantage of the traffic characteristics of the application (e.g., VoIP) to increase the number of users running that application in the system. The CHAPTER 10 The IEEE 802. 16m Physical Layer (Part II) Table 10-9 CDMA Allocation A-MAP IE Parameters [2] Parameter Size (bits) Description A-MAP IE Type CDMA Allocation A-MAP IE. CDMA Allocation Indication Ob0: Bandwidth allocation for bandwidth request; Ob1: Bandwidth allocation for ranging. Resource Index Resource index includes location and allocation size. The interpretation of bits is as follows: 5 MHz: 0 in 2 most significant bits + 9 bits for resource index; 10 MHz: 11 bits for resource index; 20 MHz: 11 bits for resource index. Long TTI Indicator Indicates number of subframes spanned by the allocated resource: Ob0: 1 subframe (default); Ob1: 4 uplink subframes for FDD or all uplink subframes for TDD. If number of downlink subframes is less than number of uplink subframes, then Long TTI Indicator is set to one. HARQ Feedback Allocation Uplink/Downlink Indicator Indication of resource assignment in uplink or downlink: Ob0: Uplink; Ob1: Downlink. SizeOffset Offset used to compute burst size index. loT of the Frequency The loT of the frequency partition used for MS resource Partition assignment that is quantized in 0.5 dB steps as loT level varies from 0 dB to 63.5 dB. Offset Control A parameter used for transmit power adjustment which represents a value from - 15.5 dB to 16 dB in 0.5 dB steps HARQ Channel Identifier periodic nature of the packet arrivals from a VoIP source allows the required resource to be allocated persistently for the duration of an active voice session. Consequently, base stations can sen