Mobile ad-hoc network with satellite node

• US 10,009,092 B2
• Filed: 05/07/2014
• Issued: 06/26/2018
• Est. Priority Date: 05/07/2013
• Status: Active Grant

• Current Assignee: Elbit Systems Land and C4I - Tadiran Limited (Elbit Systems Limited)
• Original Assignee: Elbit Systems Land and C4I - Tadiran Limited (Elbit Systems Limited)
• Inventors: Glottmann, Oscar
• Primary Examiner(s): Grey, Christopher
• Application Number:
  US14/889,185
• Publication Number:
  US 20160099770A1
• Time in Patent Office: 1,511 Days
• Field of Search: None
• CPC Class Codes: H04B 7/15557 Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode
• CPC Class Codes: H04B 7/18532 Arrangements for managing transmission, i.e. for transporting data or a signalling message
• CPC Class Codes: H04B 7/18584 Arrangements for data networking, i.e. for data packet routing, for congestion control data switching networks H04L12/00
• CPC Class Codes: H04L 45/46 Cluster building
• CPC Class Codes: H04W 40/24 Connectivity information management, e.g. connectivity discovery or connectivity update
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A mobile ad-hoc communications network with multi-interface dynamic routing includes multiple mobile nodes with mobile wireless communication and multiple mobile nodes with mobile wireless communication and satellite communication. At least some of the mobile nodes with mobile wireless communication are dynamically-switched between operating as an ordinary node or as a backbone node. At least some of the mobile nodes with mobile wireless communication and satellite communication are dynamically-switched between operating as an ordinary node or as a backbone node. All of the mobile nodes communicate over a dynamically-formed ordinary communication link. Mobile nodes operating as backbone nodes additionally communicate over a dynamically-formed backbone link. Data is routed in the network by an ad-hoc multi-interface dynamic routing which routes data between the mobile nodes by mobile wireless communication and by satellite communication in accordance with respective communication capabilities of the mobile nodes, so as to incorporate satellite communications into the network.

Claims

1. A mobile ad-hoc communications network with multi-interface dynamic routing, comprising:

a first plurality of mobile nodes configured for mobile wireless communication and without satellite communication capabilities, wherein at least some of said first plurality of mobile nodes are dynamically-switched between operating as an ordinary node or as a backbone node; and

a second plurality of mobile nodes configured for mobile wireless communication and satellite communication, wherein at least some of said second plurality of mobile nodes are dynamically-switched between operating as an ordinary node or as a backbone node;

wherein all of said mobile nodes communicate over a dynamically-formed ordinary communication link and wherein said mobile nodes operating as backbone nodes additionally communicate over a dynamically-formed backbone link,

and wherein at least some ordinary nodes of said second plurality of mobile nodes and at least some backbone nodes of said second plurality of mobile nodes can communicate by both mobile wireless communication and satellite communication in accordance with an ad-hoc multi-interface dynamic routing which routes data between said mobile nodes by mobile wireless communication and by satellite communication in accordance with respective communication capabilities of said mobile nodes, so as to incorporate satellite communications into said network.

2. A network according to claim 1, wherein said multi-interface dynamic routing routes data between said backbone nodes over said backbone link by mobile wireless communication and by satellite communication, so as to incorporate satellite communications into said backbone link.

3. A network according to claim 2, further comprising a node on-board a satellite, configured for satellite communication with said mobile nodes in accordance with said multi-interface dynamic routing.

4. A network according to claim 1, wherein said mobile wireless communication capabilities enable direct communication between said mobile nodes.

5. A network according to claim 1, wherein said ad-hoc multi-interface dynamic routing routes data between a backbone node of said second plurality of mobile nodes and an ordinary node of said second plurality of mobile nodes by direct satellite communication over said ordinary communication link.

6. A network according to claim 1, wherein said ad-hoc multi-interface dynamic routing routes data between a pair of ordinary nodes of said second plurality of mobile nodes by direct satellite communication over said ordinary communication link.

7. A network according to claim 1, wherein selection of a respective mobile node operation as ordinary or backbone is performed dynamically in accordance with a current condition of said network.

8. A network according to claim 7, wherein said mobile node is configured for dynamic self-selection of said mobile node operation as ordinary or backbone.

9. A network according to claim 1, wherein said multi-interface dynamic routing routes data between backbone nodes of topographically separate portions of said network by satellite communication.

10. A network according to claim 1, further comprising at least one gateway node having satellite communication capabilities, configured for operation as a gateway between said mobile nodes and an external network in accordance with said multi-interface dynamic routing.

11. A network according to claim 10, wherein said gateway node is a fixed node configured for communication with mobile backbone nodes by said satellite communication.

12. A network according to claim 10, wherein said gateway node is a mobile node having satellite communication capabilities, configured for operation as a gateway between said mobile nodes and a mobile external network in accordance with said multi-interface dynamic routing.

13. A network according to claim 1, wherein said mobile backbone nodes are in single-hop communication with respective dynamically changing sets of ordinary nodes.

14. A network according to claim 13, wherein a backbone node and said respective set of ordinary nodes are configured as a cluster.

15. A network according to claim 1, wherein data sent from an originating node to a destination node is forwarded over said backbone link, so as to reduce a number of hops required for transmission of data from said originating node to said destination node.

16. A network according to claim 1, wherein, for a node having satellite communication capabilities, said multi-interface dynamic routing routes data simultaneously by mobile wireless communication and by satellite communication.

17. A network according to claim 1, wherein at least one of said mobile nodes comprises:

a topology processor, configured for monitoring network topology and routing data transmission in accordance with said multi-interface dynamic routing;

a wireless transceiver in association with said topology processor, configured for direct communication with others of said mobile nodes having mobile wireless communication capabilities; and

a satellite transceiver in association with said topology processor, configured for satellite communication with others of said mobile nodes having satellite communication capabilities.

18. A network according to claim 17, wherein said topology processor is configured to select current node operation as an ordinary node or as a backbone node.

19. A network according to claim 17, wherein said topology processor comprises a network routing monitor configured for maintaining a routing protocol between network nodes.

20. A network according to claim 17, wherein said topology processor comprises a backbone routing monitor configured for maintaining a routing protocol between backbone nodes of said network.

21. A network according to claim 17, wherein said topology processor comprises a local routing monitor configured for maintaining a routing protocol within a cluster of nodes.

22. A mobile node for communicating within a mobile ad-hoc network, said mobile node having both mobile wireless and satellite communication capabilities, said network being for communication between multiple mobile nodes over both an ordinary communication link and a backbone communication link in accordance with a multi-interface dynamic network routing, the node comprising:

a topology processor, configured for monitoring network topology and for routing data transmission by said node in accordance with an ad-hoc multi-interface dynamic routing which routes data by mobile wireless communication and by satellite communication in accordance with respective communication capabilities of other nodes of said mobile ad-hoc network;

a wireless transceiver in association with said topology processor, configured for direct communication with others of said mobile nodes by mobile wireless communication; and

a satellite transceiver in association with said topology processor, configured for satellite communication with mobile nodes over a satellite link,

said mobile node being self-selecting between operation as an ordinary node and as a backbone node, wherein;

during operation as a backbone node, said mobile node can communicate by mobile wireless communication and by satellite communication over both said ordinary communication link and said backbone communication link, and

during operation as an ordinary node, said mobile node can communicate by both mobile wireless communication and by satellite communication over said ordinary communication link and disables communication over said backbone communication link.

23. A method for node self-management of a mobile node having both mobile wireless and satellite communication capabilities in a mobile ad-hoc communications network with multi-interface dynamic routing, wherein said network comprises a plurality of mobile nodes, the method comprising:

determining respective node communication capabilities of other nodes in said network, said communication capabilities comprising at least one of mobile wireless communication and satellite communication;

alternately operating said mobile node in backbone operating mode and in ordinary operating mode, said operating mode being selected in accordance with said communication capabilities and current network topology, wherein;

operating said mobile node in backbone operating mode comprise;

identifying one-hop neighboring backbone nodes and respective communication capabilities of said neighboring backbone nodes;

establishing communication over a satellite portion of a backbone link to one-hop satellite-capable backbone nodes; and

establishing communication over a mobile wireless portion of said backbone link to others of said identified one-hop backbone nodes; and

operating said mobile node in ordinary operating mode comprises establishing communication over a satellite portion of an ordinary link to satellite-capable mobile nodes and establishing mobile wireless communication over a mobile wireless portion of said ordinary link with one-hop mobile nodes in accordance with a current ad-hoc multi-interface dynamic routing.

24. A method according to claim 23, further comprising routing data by said node using mobile wireless communication and satellite communication, wherein for each data packet said multi-interface dynamic routing respectively selects mobile wireless communication or satellite communication in accordance with at least one of:

network topography and data type.

25. A method according to claim 23, further comprising:

during ordinary mobile node operation, disabling communication over said backbone link.

26. A method according to claim 23, further comprising:

during ordinary mobile node operation, establishing direct satellite wireless communication with a satellite-capable ordinary mobile node in accordance with said current dynamic routing.

27. A method according to claim 23, further comprising dynamically updating said network topology.

28. A method according to claim 23, further comprising notifying other network nodes of a current node status.

29. A mobile ad-hoc communications network with multi-interface dynamic routing, comprising:

a plurality of mobile nodes configured for communication over a mobile wireless link in accordance with a multi-interface dynamic routing, each of said mobile nodes being configured for communication by a first form of wireless communications, and at least two of said mobile nodes being configured for communication by both said first form of wireless communication and a second form of wireless communication, said first form and said second form having differing respective communication capabilities, a plurality of said mobile nodes being dynamically-switchable between operation as an ordinary node or as a backbone node, wherein said mobile nodes communicate with one-hop neighboring nodes over a dynamically-formed ordinary communication link and said mobile nodes operating as backbone nodes additionally communicate over a dynamically-formed backbone link;

and wherein data transfer over said ordinary communication link and over said backbone link utilizes both of said first and second forms of wireless communication in accordance with said multi-interface dynamic routing and respective forms of communication of said mobile nodes, so as to incorporate at least two forms of wireless communication into said network.

30. A network according to claim 29, wherein said first and second forms of communication have different respective data-transfer capacities.

31. A network according to claim 30, wherein said multi-interface dynamic routing of said network is in accordance with data transfer requirements of transmitted data and with said data transfer capabilities of said first and second forms of wireless communication.

32. A network according to claim 29, wherein said first form of wireless communication is for direct communication between said mobile nodes.

33. A network according to claim 29, further comprising at least one gateway node configured for operation as a gateway between said mobile nodes and an external network in accordance with said multi-interface dynamic routing.

34. A network according to claim 33, wherein said gateway node is a fixed node is configured for communication with mobile backbone nodes over said backbone link.

35. A network according to claim 33, wherein said gateway node is a mobile node configured for operation as a gateway between said mobile nodes and a mobile external network in accordance with said multi-interface dynamic routing.

36. A network according to claim 29, wherein at least two of said mobile nodes further comprise satellite communication capabilities and communicate over said network by satellite communications in accordance with said multi-interface dynamic routing.