Number of zones (4bits) for(j=0; j < Number of zones; j++) { DL subframe 17 bits Zone mode (1bit) configuration OFDMA Symbol Offset (7bits) Zone Duration (5 bits) } Number of zones (4bits) for(j=0; j < Number of zones; j++) { UL subframe 17 bits Zone mode (1bit) configuration OFDMA Symbol Offset (7bits) Zone Duration (5 bits) } Value Size Note First zone refers always to access zone for DL / UL Number of zones 4 bits subframe configuration 0 : access zone Zone mode 1 bit 1: relay zone OFDMA symbol The zone starts at the OFDMA symbol offset, counted 7 bits offset after the preamble of the frame The zone ends after the duration starting frame the Zone duration 5 bits OFDMA sysmbol offest. The unit of duration is an OFDMA symbol Example of subframe configuration 7.7 Management messages As can be seen in Table 19, the MAC defines a collection of management messages to support and implement its basic functions. All these messages are carried in the payload of a MAC PDU, and share the same message structure as depicted in Figure 15. Management messages begin with a Type field that uniquely identifies the message in question, while its payload varies according to the message type. As for transmission, management messages can only be transmitted in Initial Ranging, Basic, Primary, Multicast Management, or Broadcast type of FIDs (see Table 279, Table 280, and Table 281). No other types of FIDs shall carry management messages. Type (8-bit) Payload (variable) Figure 15 General management message structure — Each of the management messages shown in Table 19 are described in the following subclauses. Table 19 Management messages — Type Message Description Reference Class of connection 0 DCD Downstream Channel Descriptor 7.7.1 Broadcast 1 DS-MAP Downstream Access Definition 7.7.2 Broadcast 2 UCD Upstream Channel Descriptor 7.7.3 Broadcast 3 US-MAP Upstream Access Definition 7.7.4 Broadcast 4 RNG-REQ Ranging Request 7.7.5 Initial Ranging or Basic 5 RNG-CMD Ranging Command 7.7.6 Initial Ranging or Basic 6 REG-REQ Registration Request 7.7.7.1 Primary Management 7 REG-RSP Registration Response 7.7.7.2 Primary Management
DL subframe configuration 17 bits Number of zones (4bits) for(j=0; j < Number of zones; j++) { Zone mode (1bit) OFDMA Symbol Offset (7bits) Zone Duration (5 bits) } UL subframe configuration 17 bits Number of zones (4bits) for(j=0; j < Number of zones; j++) { Zone mode (1bit) OFDMA Symbol Offset (7bits) Zone Duration (5 bits) } Value Size Note Number of zones 4 bits First zone refers always to access zone for DL / UL subframe configuration Zone mode 1 bit 0 : access zone 1: relay zone OFDMA symbol offset 7 bits The zone starts at the OFDMA symbol offset, counted after the preamble of the frame Zone duration 5 bits The zone ends after the duration starting frame the OFDMA sysmbol offest. The unit of duration is an OFDMA symbol Example of subframe configuration 7.7 Management messages As can be seen in Table 19, the MAC defines a collection of management messages to support and implement its basic functions. All these messages are carried in the payload of a MAC PDU, and share the same message structure as depicted in Figure 15. Management messages begin with a Type field that uniquely identifies the message in question, while its payload varies according to the message type. As for transmission, management messages can only be transmitted in Initial Ranging, Basic, Primary, Multicast Management, or Broadcast type of FIDs (see Table 279, Table 280, and Table 281). No other types of FIDs shall carry management messages. Type (8-bit) Payload (variable) Figure 15 — General management message structure Each of the management messages shown in Table 19 are described in the following subclauses. Table 19 — Management messages Type Message Description Reference Class of connection 0 DCD Downstream Channel Descriptor 7.7.1 Broadcast 1 DS-MAP Downstream Access Definition 7.7.2 Broadcast 2 UCD Upstream Channel Descriptor 7.7.3 Broadcast 3 US-MAP Upstream Access Definition 7.7.4 Broadcast 4 RNG-REQ Ranging Request 7.7.5 Initial Ranging or Basic 5 RNG-CMD Ranging Command 7.7.6 Initial Ranging or Basic 6 REG-REQ Registration Request 7.7.7.1 Primary Management 7 REG-RSP Registration Response 7.7.7.2 Primary Management
22-13-0074-01-000b-802-22b-general-frame.docx