MULTI-STREAMING MULTI-HOMING DELAY TOLERANT NETWORK PROTOCOL

• US 20120327847A1
• Filed: 06/23/2011
• Published: 12/27/2012
• Est. Priority Date: 06/23/2011
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Yi, Yunjung, Bai, Haowei, Rundquist, Ronald, Bandera, Pablo
• Granted Patent: US 8,787,157 B2
• Time in Patent Office: Days
• US Class Current: 370/316
• CPC Class Codes: H04B 7/18582 Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access
• CPC Class Codes: H04J 3/1682 Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 49/90 Buffering arrangements
• CPC Class Codes: H04W 72/569 of the traffic information

Abstract

One exemplary embodiment is directed to a method for deep space communication. The method comprises generating a first packet, assigning a first priority level to the first packet, and selecting at least one communication link from a plurality of communication links for transmission of the first packet. Selecting is a function of a rule specifying which one or more communication links a packet of the first priority level is to be transmitted over. The method also includes transmitting the first packet over the at least one communication link

Claims

1. A method for deep space communication, the method comprising:

generating a first packet;

assigning a first priority level to the first packet;

selecting at least one communication link from a plurality of communication links for transmission of the first packet, wherein selecting is a function of a rule specifying which one or more communication links a packet of the first priority level is to be transmitted over; and

transmitting the first packet over the at least one communication link.

2. The method of claim 1, comprising:

assigning the first packet to a first stream of a plurality of streams based on a rule specifying that packets of the first priority level are to be assigned to the first stream.

3. The method of claim 2, wherein the rule specifying which one or more communication links a packet of the first priority level is to be transmitted over, specifies that packets from the first stream are to be transmitted over the at least one communication link.

4. The method of claim 1, comprising:

generating a plurality of packets;

assigning each of the plurality of packets to a stream of the plurality of streams;

if all communication links for transmission of one or more packets of the plurality of packets are unavailable, determining whether to store or discard the one or more packets;

storing a first at least one packet in a mass storage device, wherein the first at least one packet is stored with an indication of the stream assigned thereto;

discarding a second at least one packet; and

retrieving the first at least one packets from the mass storage device and transmitting the first at least one packets if a communication link for transmission of the first at least one packet becomes available.

5. The method of claim 4, wherein determining whether to store or discard the one or more packets includes determining as a function of a stream to which the packet is assigned.

6. The method of claim 5, wherein determining whether to store or discard the one or more packets includes determining as a function of a quantity of storage space available in the mass storage device.

7. The method of claim 4, wherein transmitting the first at least one packets from the mass storage device includes transmitting the first at least one packets as a function of the stream to which the packet is assigned.

8. The method of claim 1, comprising:

generating a second packet;

assigning a second priority level to the second packet; and

transmitting the second packet over any of the communication links as a function of rule that allows transmission of packets having the second priority level on any of the communication links

9. The method of claim 8, wherein the rule that allows transmission of packets having the second priority level on any of the communication links, specifies that a first communication link is to be used for transmission of packets instead of other communication links when the first communication link is available.

10. The method of claim 1, wherein the plurality of communication links includes at least two of an optical link, a radio frequency link, and a microwave link.

11. The method of claim 1, wherein assigning a first priority level includes assigning a first priority level as a function of a type of data to which the first packet corresponds, wherein types of data include command and control data and telemetry data.

12. An apparatus for deep space communication, the apparatus comprising:

one or more processing devices;

a first transceiver coupled to the one or more processing devices and configured to transmit and receive signals over a first communication link;

a second transceiver coupled to the one or more processing device and configured to transmit and receive signals over a second communication link;

one or more mass storage devices coupled to the one or more processing devices; and

one or more memory devices coupled to the one or more processing devices, wherein the one or more memory devices includes instructions which, when executed by the one or more processing devices, cause the one or more processing devices to;

generate a first packet;

assign a first priority level to the first packet;

assign the first packet to a first stream of a plurality of streams based on a rule specifying that packets of the first priority level are to be assigned to the first stream;

select at least one communication link from a plurality of communication links for transmission of the first packet, wherein select is a function of a rule specifying which one or more communication links a packet of stream is to be transmitted over; and

transmit the first packet over the at least one communication link.

13. The apparatus of claim 12, wherein the instructions, when executed by the one or more processing devices, cause the one or more processing devices to:

generate a plurality of packets;

assign each of the plurality of packets to a stream of the plurality of streams;

if all communication links for transmission of one or more packets of the plurality of packets are unavailable, determine whether to store or discard the one or more packets;

store a first at least one packet in a mass storage device, wherein the first at least one packet is stored with an indication of the stream assigned thereto;

discard a second at least one packet; and

retrieve the first at least one packets from the mass storage device and transmit the first at least one packets if a communication link for transmission of the first at least one packet becomes available.

14. The apparatus of claim 13, wherein determine whether to store or discard the one or more packets includes determine as a function of a stream to which the packet is assigned.

15. The apparatus of claim 14, wherein determine whether to store or discard the one or more packets includes determine as a function of a quantity of storage space available in the mass storage device.

16. The apparatus of claim 14, wherein transmit the first at least one packets from the mass storage device includes transmit the first at least one packets as a function of the stream to which the packet is assigned.

17. The apparatus of claim 12, wherein the instructions, when executed by the one or more processing devices, cause the one or more processing devices to:

generate a second packet;

assign a second priority level to the second packet; and

transmit the second packet over any of the communication links as a function of rule that allows transmission of packets having the second priority level on any of the communication links, wherein the rule that allows transmission of packets having the second priority level on any of the communication links, specifies that a first communication link is to be used for transmission of packets instead of other communication links when the first communication link is available.

18. The apparatus of claim 12, wherein the first transceiver is configured to transmit and receiver over an optical communication link and the second transceiver is configured to transmit and receive over one of a radio frequency communication link and a microwave communication link.

19. The apparatus of claim 12, wherein assign a first priority level includes assign a first priority level as a function of a type of data to which the first packet corresponds, wherein types of data include command and control data and telemetry data.

20. A processor-readable medium including instructions which, when executed by a processing device, cause the processing device to:

generate a first packet of a first type;

assign the first packet to a first stream of a plurality of streams based on a rule specifying that packets of the first type are to be assigned to the first stream;

select at least one communication link from a plurality of communication links for transmission of the first packet, wherein select is a function of a rule specifying which one or more communication links a packet of stream is to be transmitted over; and

transmit the first packet over the at least one communication link.