Praise for Fundamentals of WiMAX

9.5 Network Entry and Initialization 323Table 9.4 Parameters in Basic Capability Set of BS and MSPHY Related ParametersTransmission gapMaximum transmit powerCurrent transmit powerFFT sizeMeaningThe transmission gap between the UL and DL subframe supported bythe SS for TDD and HF-FDDMaximum transmit power available for BPSK, QPSK, 16 QAM, and 64QAM modulationThe transmit power used for the current MAC PDU (containing theSBC-REQ message)The supported FFT sizes (128, 512, 1,024, and 2,048 for OFDMAmode; 256 for OFDM mode)64 QAM support Support for 64 QAM by the modulator and demodulatorFEC supportHARQ supportSTC and MIMO supportAAS private MAP supportUplink power–control supportSubcarrier permutation supportWhich optional FEC modes are supported: CTC, LDPC, and so onSupport for HARQThe various space/time coding and MIMO modesSupport for various AAS private MAPUplink power-control options (open loop, closed loop, and AAS preamblepower control)Support for various optional PUSC, FUCSC, AMC, and TUSC modesBandwidth-Allocation-Related ParametersHalf-duplex/full-duplex FDDsupportSupport for half-duplex and full-duplex FDD modes in case of FDDimplementationversion supported, convergence sublayer supported, and ARQ support. The MS may indicate thesupported IP versions to the BS in the REG-REQ message, in which case the BS indicates the IPversion to be used in the REG-RSP message. The BS allows the use of exactly one of the IP versionssupported by the MS. If the information about the supported IP version is omitted in theREG-REQ message, the BS assumes that the MS can support only IPv4. After receiving theREG-RSP message from the BS, the SS can use DHCP to obtain an IP address.9.5.6 Establish Service FlowThe creation of service flows can be initiated by either the MS or the BS, based on whether initialtraffic arrives in the uplink or the downlink. When it an MS chooses to initiate the creation ofa service flow, an MS sends a DSA-REQ message containing the required QoS set of the serviceflow (Figure 9.8). On receipt of the DSA-REQ message, the BS first checks the integrity of themessage and sends a DSX-RVD message indicating whether the request for a new service flowwas received with its integrity preserved. Then the BS checks whether the requested QoS set can