message category is defined by ICAO and mapped to the supported ATN mobile subnetworks in table 3-3 of Annex 10 Vol III. Considering the ATS and AOC classes of service as defined in the previous sections, the following table provides a mapping of the AeroMACS services to the ATN network layer priority levels. Message categories ATN network layer priority Corresponding mobile subnetwork priority AeroMACS Network/systems management 14 NET Distress communications 13 ATS1 Urgent communications 12 ATS1 High-priority flight safety messages 11 ATS1 Normal-priority flight safety messages 10 ATS2 Meteorological communications 9 ATS3 Flight regularity communications 8 AOC1 or AOC2 Aeronautical information service messages 7 ATS3 Network/systems administration 6 ATS3 Aeronautical administrative messages 5 Not allowed <unassigned> 4 <unassigned> Urgent-priority administrative and U.N. Charter communications 3 Not allowed High-priority administrative and State/Government communications 2 Not allowed Normal-priority administrative communications 1 Not allowed Low-priority administrative communications and aeronautical passenger communications 0 Not allowed <Editor’s note: WGS to discuss proposed priority levels (in table above.> Note: The information in the 3rd column of this is equivalent to the columns defined in Table 3-3 of Annex 10 Volume III for the other mobile subnetworks.
Chapter 3 TECHNICAL SPECIFICATIONS 3.1 PERFORMANCE 3.1.1 Levels The total base station Effective Isotropic Radiated Power (EIRP) in a sector shall not exceed: 39.4 dBm for elevation angles from the horizon up to 1.5 degrees 39.4 dBm linearly decreasing (in dB) to 24.4 dBm for elevation angles from 1.5 to 7.5 degrees 24.4 dBm linearly decreasing (in dB) to 19.4 dBm for elevation angles from 7.5 to 27.5 degrees 19.4 dBm linearly decreasing (in dB) to 11.4 dBm for elevation angles from 27.5 to 90 degrees In addition the following requirement for the mobile stations is applied: The mobile station EIRP shall not exceed 30 dBm Note 1: EIRP defined as antenna gain in a specified elevation direction plus the average AeroMACS transmitter power. While the instantaneous peak power from a given transmitter may exceed that level when all of the subcarriers randomly align in phase, when the large number of transmitters assumed in the analysis is taken into account, average power is the appropriate metric. Note 2: The breakpoints in the EIRP mask are consistent with the elevation pattern of a +15 dBi peak, 120 degree sector antenna as contained in ITU-R F.1336-2. Note 3: These values were derived using the worst-case analysis described. Other approaches involving higher powers may be acceptable, however additional analysis must be performed to ensure the total interference allowable at the FSS satellites, consistent with ITU requirements, is not exceeded. Note 4: If a sector contains multiple transmit antennas (e.g., MIMO), the specified power limit is the sum of the power from each antenna.
BW (MHz) Range (MHz) Frequency Number Set Uplink Downlink Uplink Downlink 10.A 5 (100100, 102900, 100) (100100, 102900, 100) 3.7.3.2 Preferred AeroMACS RF channels are every 5 MHz from a channel center frequency of 5005 MHz to 5145 MHz. — END —