ocol (FEC Coding, Signal Mapping, Modulation, MIMO processing, etc.) Physical Layer Control-Plane Data-Plane Control Primitives between MAC CPS Functions Control Messages/Signaling (Control Plane) Data Path (Data Plane) FIGURE 3-14 Signal flow graph in data- and control-planes [12] the ARQ function (if enabled), and the convergence sub-layer function, to form the network layer packets. The control primitives between the MAC CPS functions and between the MAC CPS and PHY that are related to the processing of user traffic data are also shown in Figure 3-14. The control-plane signaling and processing flow graph at the BS and the MS are shown in Figure 3-14. In the transmitter side, the flow of control primitives from control-plane functions to data-plane functions and processing of control-plane signals by data-plane functions in order to 3.2 The IEEE 802. 16m protocol structure construct MAC management messages and MAC header/sub-headers, to be transmitted over the air interface, are illustrated. In the receiver side, the arrows show the processing of the MAC control messages through data-plane functions and the reception of the corresponding control-plane signals by control-plane functions. The dotted arrows show the control primitives between MAC CPS functions and between MAC CPS and physical layer functions that are related to the processing of control-plane signaling. The control primitives to/from M-SAP/C-SAP define the network related functionalities, such as inter-BS interference management, inter/intra RAT mobility management, etc., as well as management-related functionalities, such as location management, system configu- ration, etc. Figure 3-15 illustrates the IP packet processing in an IEEE 802.16m base station transmitter and mobile station receiver. The main functional components of each layer and their interconnections are identified. It is further shown how the MAC scheduler in the base station, based on the periodic reports and measurements provided by each mobile station, generates appropriate cont