TABLE A4-15 (end) Repeat Total size Name Description interval Comment (bytes) (frames) Validity of this Lifetime of this version in version 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, slot, corresponding to actual channel format no, logical slot number/10. configuration channel number 6 1 A frame 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 format no, logical channel number Uplink random Packet providing centre A may contain access/signalling frequency, slot , multiple uplink signalling 6 1 channel format no, logical channels to reduce configuration channel number protocol latency Uplink demand Packet providing centre A frame may contain assign channel frequency, start slot , multiple data channels 6 1 configuration format no, logical channel number This satellite Packet containing the GPS almanac format may 25 Flexible ephemeris ephemeris, validity be used. satellite Packet containing GPS almanac format may ephemeris network ID, satellite ID, be used. 46 Flexible status , ephemeris, validity
TABLE A4-15 (end) Name Description Total size (bytes) Repeat interval (frames) Comment 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, slot, format no, logical channel number 6 1 8 bits are used for slots corresponding to actual slot number/10. A frame may contain multiple announcement channels to reduce protocol latency Downlink data channel configuration Packet providing centre frequency, start slot , format no, logical channel number 6 1 A frame may contain multiple data channels Uplink random access/signalling channel configuration Packet providing centre frequency, slot , format no, logical channel number 6 1 A may contain multiple uplink signalling channels to reduce protocol latency Uplink demand assign channel configuration Packet providing centre frequency, start slot , 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. satellite ephemeris Packet containing network ID, satellite ID, status , ephemeris, validity 46 Flexible GPS almanac format may be used.
R-REC-M.2092-0-201510-I!!MSW-E.docx