 group sizes with the following configurations: Non FFR (single A-MAP region): QPSK 1/4, QPSK 1/2; Non FFR (single A-MAP region): QPSK 1/8 QPSK 1/2; FFR (two A-MAP regions): reuse-1 QPSK 1/4, reuse 1 QPSK 1/2, reuse-3 QPSK 1/2; FFR (two A-MAP regions): reuse-1 QPSK 1/8, reuse 1 QPSK 1/2, reuse-3 QPSK 1/2. In all cases, the maximum number of Assignment A-MAPs is 32 per subframe, i.e., the maximum number of blind detection hypothesis testing is 32 per subframe and the total utilized physical resource is no more than 48 MLRUs. In the example shown in Figure 10-6, a total of 13 Assignment A-MAPs Assignment A-MAP Group I: QPSK 1/4 Assignment A-MAP Group II: QPSK 1/2 5 Assignment A-MAPs 8 Assignment A-MAPs 18 MLRUs Containing 13 Assignment A-MAP IEs FIGURE 10-6 An illustration of the Assignment A-MAP groups 10.2 Downlink control channels are divided into groups with each containing a different number of Assignment A-MAPs. The (QPSK 1/4, QPSK 1/2) modulation and coding scheme has been used. Therefore, there are 13 hypothesis- testing trials for the purpose blind detection of the Assignment A-MAPs. 10.2.2 Advanced MAP Information Elements The A-MAPs carry control and signaling information and scheduling parameters. The unicast or broadcast control and signaling parameters are used for configuration of the mobile stations and base stations during normal operation. The parameters and control signal are contained in various fields of the Information Elements (IEs) that constitute the A-MAPs. Each A-MAP IE consists of type information (16 possible types) and a number of parameter fields. The length of the A-MAP IEs is limited to 40 bits unless fragmented into additional information elements. Table 10-3 shows the various A-MAP IE types that are defined in IEEE 802.16m. In the following, we describe each information element type's main parameters and usage. The reserved fields are not shown. It must be noted that the exact format of all information elements are defined in the IEEE 802.16m standard specification [2]. Furthermor