Satellite ID The ID of this satellite in a network. Up to 256 3 1 satellites per network. Bulletin Version number of this version Bulletin 3 1 Up to 256 frames active Validity of this Lifetime of this version version in number of 1 minute 4 1 frames. 16 bits used. Future satellite Packet providing status change information about planned future status change. 13 1 From Julian day of year start, frame no, today and frame, new status. Back-up bulletin Channel number above board frequency 156 MHz, 25 kHz 3 1 resolution Satellite protocol Index showing which capability protocols are supported 3 1 by this satellite Downlink Packet providing centre 8 bits are used for slots frequency, start slot, corresponding to actual channel PL-Frame format no, slot number/10. configuration logical channel number 6 1 A may contain multiple announcement channels to reduce protocol latency Downlink data Packet providing centre A frame may contain channel frequency, start slot , multiple data channels 6 1 configuration PL-Frame format no, logical channel number Uplink random Packet providing centre A frame may contain access/signalling frequency, start slot , multiple uplink 6 1 channel PL-Frame format no, signalling channels to configuration logical channel number reduce protocol latency Uplink demand Packet providing centre A frame may contain assign channel frequency, start slot , multiple data channels 6 1 configuration PL-Frame format no, logical channel number This satellite Packet containing the GPS almanac format 25 Flexible ephemeris ephemeris, validity may be used. Other satellite Packet containing GPS almanac format ephemeris network ID, satellite ID, may be used. 46 Flexible status , ephemeris, validity Free text message Containing up to 128 Network operator ASCII characters 9 Flexible message to all ships, information only
Satellite ID The ID of this satellite in a network. Up to 256 satellites per network. 3 1 Bulletin version Version number of this Bulletin Up to 256 frames active 3 1 Validity of this version Lifetime of this version in number of 1 minute frames. 16 bits used. 4 1 Future satellite status change Packet providing information about planned future status change. From Julian day of year start, frame no, today and frame, new status. 13 1 Back-up bulletin board frequency Channel number above 156 MHz, 25 kHz resolution 3 1 Satellite protocol capability Index showing which protocols are supported by this satellite 3 1 Downlink channel configuration Packet providing centre frequency, start slot, PL-Frame format no, logical channel number 6 1 8 bits are used for slots corresponding to actual slot number/10. A may contain multiple announcement channels to reduce protocol latency Downlink data channel configuration Packet providing centre frequency, start slot , PL-Frame format no, logical channel number 6 1 A frame may contain multiple data channels Uplink random access/signalling channel configuration Packet providing centre frequency, start slot , PL-Frame format no, logical channel number 6 1 A frame may contain multiple uplink signalling channels to reduce protocol latency Uplink demand assign channel configuration Packet providing centre frequency, start slot , PL-Frame format no, logical channel number 6 1 A frame may contain multiple data channels This satellite ephemeris Packet containing the ephemeris, validity 25 Flexible GPS almanac format may be used. Other satellite ephemeris Packet containing network ID, satellite ID, status , ephemeris, validity 46 Flexible GPS almanac format may be used. Free text message Containing up to 128 ASCII characters 9 Flexible Network operator message to all ships, information only
R12-SG05-RP-1007!!MSW-E.docx