Alignment in line-of-sight communication networks

• US 9,793,988 B2
• Filed: 11/06/2014
• Issued: 10/17/2017
• Est. Priority Date: 11/06/2014
• Status: Active Grant

• Current Assignee: Meta Platforms, Inc. (f/k/a Facebook, Inc.)
• Original Assignee: Meta Platforms, Inc. (f/k/a Facebook, Inc.)
• Inventors: Yogeeswaran, Karthik, Maguire, Yael
• Primary Examiner(s): Sedighian, M. R.
• Application Number:
  US14/534,675
• Publication Number:
  US 20160134372A1
• Time in Patent Office: 1,076 Days
• Field of Search: 398156, 398129, 398122, 398131, 398118, 4554561, 4554564
• CPC Class Codes: H04B 10/11 Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
• CPC Class Codes: H04B 10/1125 using a single common optical path
• CPC Class Codes: H04B 10/1129 Arrangements for outdoor wireless networking of information

Abstract

Various of the disclosed embodiments relate to line-of-sight (LOS), e.g., optical, based networks. Particularly, systems and methods are provided for aligning nodes in a line-of-sight communication network with their peers. The nodes may be placed and passively aligned with one another as position information is passed between peers. The elevation indicated in the position information may be refined based upon relative barometric pressure readings between peers. In a next phase, isolated networks of nodes may be integrated with the network of nodes contacting the Internet backbone. Finally, routing algorithms may be implemented to address weather effects (e.g., fog) and congestion to optimize network service.

Claims

1. A computer-implemented method executed in a first node for aligning the first node with a second node, comprising:

determining a position coordinate associated with the first node;

determining a barometric pressure measurement associated with the first node;

receiving an indication of position coordinates associated with each of a plurality of one or more other nodes, the plurality of one or more other nodes including the second node, and pressure measurements associated with each of the plurality of one or more other nodes;

determining a relative elevation based upon the pressure measurement associated with the first node and the pressure measurement associated with the second node;

determining a relative position based upon the position coordinates associated with the first node and the position coordinates associated with the second node; and

orienting a Line-of-Sight (LOS) communication device at the first node based upon the relative elevation and the relative position.

2. The computer-implemented method of claim 1, wherein the position coordinate associated with the first node is a GPS coordinate.

3. The computer-implemented method of claim 1, wherein determining a relative position comprises determining an in-plane distance, and wherein orienting a LOS communication device comprises rotating the LOS communication device based upon an angle associated with a Euclidean distance to the second node.

4. The computer-implemented method of claim 1, wherein receiving an indication comprises receiving a wireless transmission from a user mobile device in proximity to the first node.

5. The computer-implemented method of claim 1, wherein receiving an indication comprises receiving a transmission from a third node.

6. The computer-implemented method of claim 5, wherein third node and the second node are the same node.

7. The computer-implemented method of claim 1, further comprising notifying a third node that the first node is in communication with the second node.

8. A non-transitory computer-readable storage medium storing instructions configured to cause at least one computer system to perform a method comprising:

determining a position coordinate associated with a first node;

determining a barometric pressure measurement associated with the first node;

receiving an indication of

position coordinates associated with each of a plurality of one or more other nodes, the plurality of one or more other nodes including a second node, and

pressure measurements associated with each of the plurality of one or more other nodes;

determining a relative elevation based upon the pressure measurement associated with the first node and the pressure measurement associated with the second node; and

determining a relative position based upon the position coordinates associated with the first node and the position coordinates associated with the second node;

orienting a Line-of-Sight (LOS) communication device at the first node based upon the relative elevation and the relative position.

9. The computer-readable storage medium of claim 8, wherein the position coordinate associated with the first node is a GPS coordinate.

10. The computer-readable storage medium of claim 8, wherein determining a relative position comprises determining an in-plane distance, and wherein orienting a LOS communication device comprises rotating the LOS communication device based upon an angle associated with a Euclidean distance to the second node.

11. The computer-readable storage medium of claim 8, wherein receiving an indication comprises receiving a wireless transmission from a user mobile device in proximity to the first node.

12. The computer-readable storage medium of claim 8, wherein receiving an indication comprises receiving a transmission from a third node.

13. The computer-readable storage medium of claim 12, wherein third node and the second node are the same node.

14. The computer-readable storage medium of claim 8, the instructions further comprising notifying a third node that the first node is in communication with the second node.

15. A computer system comprising:

at least one processor;

at least one memory comprising instructions configured to cause the at least one processor to perform a method comprising;

determining a position coordinate associated with a first node;

determining a barometric pressure measurement associated with the first node;

receiving an indication of

position coordinates associated with each of a plurality of one or more other nodes, the plurality of one or more other nodes including a second node, and

pressure measurements associated with each of the plurality of one or more other nodes;

determining a relative elevation based upon the pressure measurement associated with the first node and the pressure measurement associated with the second node;

determining a relative position based upon the position coordinates associated with the first node and the position coordinates associated with the second node; and

orienting a Line-of-Sight (LOS) communication device at the first node based upon the relative elevation and the relative position.

16. The computer system of claim 15, wherein determining a relative position comprises determining an in-plane distance, and wherein orienting a LOS communication device comprises rotating the LOS communication device based upon an angle associated with a Euclidean distance to the second node.

17. The computer system of claim 15, wherein receiving an indication comprises receiving a wireless transmission from a user mobile device in proximity to the first node.

18. The computer system of claim 15, wherein receiving an indication comprises receiving a transmission from a third node.

19. The computer system of claim 18, wherein third node and the second node are the same node.

20. The computer system of claim 15, the method further comprising notifying a third node that the first node is in communication with the second node.