ntrol information consists of both user-specific and non-user-specific control information. The user- specific control is further divided into assignment, HARQ feedback and power control fields, and is transmitted in the assignment A-MAP, HARQ feedback A-MAP, and power control A-MAP, respectively. These A-MAPs are contained in a physical region called the A-MAP region that is frequency-division multiplexed with data. The A-MAP regions are located in all DL unicast subframes. When the default TTI of one subframe is used, the DL data allocations corresponding to an A-MAP region occupy resources in the subframe where the A-MAP region is located. If Fractional Frequency Reuse (FFR) is used in a DL subframe, either reuse-1 or a power-boosted reuse-3 partition may contain the A-MAP region. In a DL subframe, the non-user specific, HARQ feedback, and power control A-MAPs are located in the primary frequency partition. The primary frequency partition can be either reuse-1 or a power-boosted reuse-3 partition, which is identified by the S-SFH SP1 broadcast channel, whereas the assignment A-MAP can be either in a reuse-1 or a power-boosted reuse-3 partition, or both. The number of assignment A-MAPs in each frequency partition is signaled through a non-user specific A-MAP. The structure of an A-MAP region is illustrated in Figure 10-3. The resources occupied by each A-MAP physical channel may vary depending on the system configuration and scheduler operation. The A-MAP region consists of a number of distributed LRUs. In all DL subframes except the first subframe of a superframe, an A-MAP region consists of the first NA-MAP distributed LRUs in the primary frequency partition and the LRUs with Nsym symbols. In the first DL subframe of a superframe, the A-MAP region is formed using the NA-MAP distributed LRUs after NSFH distributed LRUs occupied by the superframe headers. The non-user-specific control information consists of information that is not dedicated to a specific user or a specific group of users. It includes informati