Low data rate service for a terminal of a satellite communication system
A satellite system includes a receiver, a transmitter, and a processor. The processor is configured to receive a LDR-PNT signal using the receiver of a terminal of the satellite system; provide a network entry request using the transmitter of the terminal of the satellite system; and receive acknowledgement of network entry for communication.
1 . A system, comprising:
a receiver;
a transmitter;
a processor configured to:
receive a LDR-PNT signal using the receiver;
determine, based on the LDR-PNT signal, whether to provide a first network entry request or a second network entry request, wherein the first network entry request is for LDR communication and the second network entry request is for HDR communication;
provide the first network entry request or the second network entry request using the transmitter; and
receive acknowledgement of network entry for communication.
2 . The system of claim 1 , wherein the communication comprises communication using a LDR link.
3 . The system of claim 1 , wherein the communication comprises communication using an HDR link.
4 . The system of claim 1 , wherein the LDR-PNT signal includes control data.
5 . The system of claim 4 , wherein the control data comprises time synchronization.
6 . The system of claim 4 , wherein the control data comprises a rendezvous time for an HDR link.
7 . The system of claim 4 , wherein the control data comprises an HDR link state.
8 . The system of claim 1 , wherein the LDR-PNT signal includes service messages.
9 . The system of claim 8 , wherein the service messages include a satellite almanac.
10 . The system of claim 8 , wherein the service messages include broadcast messages.
11 . The system of claim 8 , wherein the service messages include encrypted group messages.
12 . The system of claim 8 , wherein the service messages include encryption keys.
13 . The system of claim 1 , wherein the first network entry request or the second network entry request includes a node ID of a terminal.
14 . The system of claim 1 , wherein the first network entry request or the second network entry request includes authentication information.
15 . The system of claim 1 , wherein the first network entry request or the second network entry request includes a terminal location.
16 . The system of claim 1 , wherein the acknowledgement of network entry comprises a satellite ID.
17 . The system of claim 1 , wherein the acknowledgement of network entry comprises a time to expect a LDR handshake or an HDR handshake.
18 . The system of claim 1 , wherein the LDR communication or the HDR communication is scheduled at a scheduled time with a satellite.
19 . The system of claim 18 , wherein a high gain aperture beam is directed at the satellite at the scheduled time.
20 . A method, comprising:
receiving a LDR-PNT signal using the receiver;
determining, based on the LDR-PNT signal, whether to provide a first network entry request or a second network entry request, wherein the first network entry request is for LDR communication and the second network entry request is for HDR communication;
providing the first network entry request or the second network entry request using the transmitter; and
receiving acknowledgement of network entry for communication.