System, device and method for communicating over power lines

• US 8,279,058 B2
• Filed: 11/06/2008
• Issued: 10/02/2012
• Est. Priority Date: 11/06/2008
• Status: Active Grant

• Current Assignee: Current Technologies International GmbH
• Original Assignee: Current Technologies International GmbH
• Inventors: Sharma, Manu
• Primary Examiner(s): Bugg, George
• Assistant Examiner(s): Labbees, Edny
• Application Number:
  US12/266,344
• Publication Number:
  US 20100109907A1
• Time in Patent Office: 1,426 Days
• Field of Search: 340/531, 340/538.11, 340/12.32, 340/12.33, 340/12.37, 340/12.39, 340/12.4, 307/3
• US Class Current: 340/538.11
• CPC Class Codes: H04B 2203/5408 using protocols
• CPC Class Codes: H04B 2203/5441 Wireless systems or telephone
• CPC Class Codes: H04B 2203/5445 Local network
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 3/542 the information being in digital form

Abstract

A system, method and device for communicating over a power line are provided. In one embodiment, the system includes a first device configured to communicate via broadband communications having a bandwidth greater than one megahertz, and a second device having a first port and a second port. The second port may be configured to communicate with the first device via broadband communications and the first port configured to communicate over one or more power lines with one or more remote devices via one or more of a plurality of frequency bands, and wherein each of the plurality of frequency bands has a bandwidth that is less than five hundred kilohertz. The second device may select one of the plurality of frequency bands and one of a plurality of modulations schemes based on channel conditions and/or operational parameters. The second device may be configured to transmit and receive data in a multitude of the plurality of frequency band concurrently.

Claims

1. A system for communicating over power lines comprising:

a first device configured to communicate via broadband communications having a bandwidth greater than one megahertz;

a second device having a first port and a second port;

wherein said second port configured to communicate with said first device via broadband communications;

wherein said first port is configured to communicate over one or more power lines with one or more remote devices via at least one of a plurality of selectable frequency bands; and

wherein each of the plurality of frequency bands has a bandwidth that is less than five hundred kilohertz.

2. The system according to claim 1, wherein said first port is configured to dynamically vary a transmission power.

3. The system according to claim 1, wherein said first port is configured to differentially transmit data signals over a first and second energized power line conductor.

4. The system according to claim 1, wherein said first port is configured to communicate using a multitude of the plurality of frequency bands concurrently.

5. The system according to claim 1, wherein said first port comprises a plurality of physical drivers and wherein each physical driver is configured to transmit in a different one of the plurality of frequency bands.

6. The system according to claim 1, wherein said first port is configured to select one of a plurality of schemes of modulation for transmission of data.

7. The system according to claim 1, wherein said first port is configurable to maintain data of one or more channel conditions for a multitude of the plurality of frequency bands.

8. The system according to claim 7, wherein said first port is configurable to dynamically change a modulation scheme for communications based, at least in part, on a change in a channel condition of a frequency band.

9. The system according to claim 7, wherein said first port is configurable to change a frequency band of communications based, at least in part, on a change in a channel condition of a frequency band.

10. The system according to claim 1, wherein said first port is configured to store data of one or more operational parameters;

and wherein at least one said operational parameters comprises a signal-to-noise ratio.

11. The system according to claim 1, wherein at least some the plurality of frequency bands have different bandwidths.

12. The system according to claim 1, wherein the one or more remote devices comprise utility meters.

13. The system according to claim 1, wherein said first port is configured to transmit data signals in a multitude of frequency bands while concurrently receiving data signals in a multitude of frequency bands.

14. The system according to claim 1, wherein said first device and said second port of said second device are configured to communicate with each other via broadband power line communications.

15. The system according to claim 1, wherein said first device and said second port of said second device are configured to communicate with each other via broadband wireless communications.

16. The system according to claim 1, wherein said second device includes a controller in communication with said first port and said second port and configured to perform routing functions for data received from said first device.

17. The system according to claim 1, wherein said second port of said second device is connected to an external low voltage power line and said second device is co-located with a distribution transformer.

18. A system for communicating over power lines comprising:

a plurality of devices having a first port and a second port;

wherein said second port is configured to communicate with an upstream device line via broadband communications occupying a bandwidth that is greater than one megahertz;

wherein said first port is configured to communicate over one or more power lines with one or more remote devices via a plurality of frequency bands;

wherein each of the plurality of frequency bands has a bandwidth that is less than five hundred kilohertz; and

wherein each of the plurality of devices is configured to communicate utility data with the one or more remote devices.

19. The system according to claim 18, wherein said first port is configured to vary a transmission power.

20. The system according to claim 18, wherein said first port is configured to differentially transmit data signals over a first and second energized power line conductor.

21. The system according to claim 18, wherein said first port is configured to communicate using a multitude of the plurality of frequency bands concurrently.

22. The system according to claim 18, wherein said first port comprises a plurality of physical drivers and wherein each physical driver is configured to transmit in a different one of the plurality of frequency bands.

23. The system according to claim 18, wherein said first port is configured to dynamically select one of a plurality of schemes of modulation for transmission of data.

24. The system according to claim 18, wherein said first port is configurable to maintain data of one or more channel conditions for a multitude of the plurality of frequency bands.

25. The system according to claim 24, wherein said first port is configurable to dynamically change a modulation scheme for communications based, at least in part, on a change in a channel condition of a frequency band.

26. The system according to claim 24, wherein said first port is configurable to change a frequency band of communications based, at least in part, on a change in a channel condition of a frequency band.

27. The system according to claim 18, wherein said first port is configured to store data of one or more operational parameters;

and wherein at least one of said operational parameters comprises a signal-to-noise ratio.

28. The system according to claim 18, wherein at least some the plurality of frequency bands have different bandwidths.

29. The system according to claim 18, wherein the one or more remote devices comprise utility meters.

30. The system according to claim 18, wherein the broadband communications comprise broadband power line communications.

31. The system according to claim 18, wherein the broadband communications comprise wireless broadband communications.

32. The system according to claim 18, wherein said plurality of devices are configured to receive utility data from the one or more remote devices and to transmit the utility data to a remote computer via the upstream device and the Internet.

33. A method of communicating over power lines, comprising:

receiving data via the broadband communications;

selecting a first frequency band from a plurality of frequency bands;

wherein each of the plurality of frequency bands has bandwidth that is less than five hundred kilohertz;

selecting a modulation scheme from a plurality of modulation schemes; and

transmitting the data over a power line using the selected modulation scheme in the selected frequency band.

34. The method according to claim 33, further comprising receiving utility data from the one or more remote devices and transmitting the utility data to a remote computer via the Internet.

35. The method according to claim 33, wherein transmitting comprises differentially transmitting the data over a first and second energized power line conductor.

36. The method according to claim 33, further comprising transmitting data signals in a multitude of frequency bands while concurrently receiving data signals in a multitude of frequency bands.

37. The method according to claim 33, further comprising storing data of one or more channel conditions for a multitude of the plurality of frequency bands.

38. The method according to claim 37, further comprising dynamically changing a modulation scheme for communications based, at least in part, on a change in a channel condition of a frequency band.

39. The method according to claim 37, further comprising changing a frequency band of communications based, at least in part, on a change in a channel condition of a frequency band.

40. The method according to claim 33, further comprising storing data of one or more operational parameters associated with one or more frequency bands;

and wherein at least one said operational parameters comprises a signal-to-noise ratio.

41. The method according to claim 33, wherein the broadband communications comprise wireless broadband communications.