Power line communication device and method

• US 20070222579A1
• Filed: 03/27/2006
• Published: 09/27/2007
• Est. Priority Date: 03/27/2006
• Status: Active Grant

• Current Assignee: Chemtron Research LLC (Intellectual Ventures LLC)
• Original Assignee: Current Technologies LLC (Pattern Inc.)
• Inventors: Berkman, William
• Granted Patent: US 7,796,025 B2
• Time in Patent Office: Days
• US Class Current: 340/538
• CPC Class Codes: H04B 2203/5479 using repeaters
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 3/58 Repeater circuits

Abstract

A power line communication device configured to facilitate communications over a low voltage power line between a downstream user device and an external power line communication device is provided. In one embodiment, the device may include a communication module configured to communicate over a low voltage power line and a controller configured to control the module. The controller is configured to operate the module in a first configuration in which all repeating is disabled; and a second configuration wherein upstream repeating is enabled and downstream repeating is disabled. The controller may transition from the first configuration to the second configuration in response to a command received via the low voltage power line or upon determining that a triggering event has been detected such as an unacceptable data rate, error rate, or noise detection. In some embodiments, the device may form part of a utility meter and also transmit utility data to the power line communication device.

Claims

1. A method of providing communications between one or more user devices and an external power line communication device via low voltage power lines that include internal low voltage (LV) power lines and external low voltage power lines, the method comprising:

determining that communications over the low voltage power line are degraded; and

enabling repeating of data received from the one of one or more user devices on the low voltage power lines.

2. The method of claim 1, wherein repeating of data received from the external power line communication device is not enabled.

3. The method of claim 1, wherein said determining is performed by the external power line communication device, and wherein said enabling comprises transmitting a command from said communication device to activate repeating.

4. The method of claim 1, further comprising subsequent to said enabling:

receiving data from a power line modem that received the data from a user device;

transmitting the data over the low voltage power lines; and

receiving the transmitted data at the external power line communication device.

5. The method of claim 1, further comprising subsequent to said enabling:

repeating upstream communications over the low voltage power lines; and

not repeating downstream communications.

6. The method of claim 1, wherein said determining that communications are degraded comprises determining that upstream communications are degraded.

7. The method of claim 1, wherein said determining and enabling are performed by a low voltage power line repeater coupled to one of the internal low voltage (LV) power lines.

8. The method of claim 1, wherein said determining and enabling are performed by a LV power line repeater coupled to one of the external low voltage power lines.

9. The method of claim 1, further comprising:

receiving utility usage data;

storing the utility usage data; and

transmitting the utility usage data to the power line communication device via one of the external low voltage power lines.

10. The method of claim 1, wherein said enabling comprises transmitting a command via the one or the external low voltage power lines to activate repeating.

11. The method of claim 1, wherein the one or more user devices are disposed in a plurality of customer premises;

and wherein each customer premises includes a repeater associated therewith that is enabled for upstream repeating by said enabling step.

12. The method of claim 1, wherein said determining comprises determining that a data rate of communications is less than a threshold data rate.

13. The method of claim 1, wherein said determining comprises determining that an error rate of communications is greater than a threshold error rate.

14. The method of claim 1, wherein said determining comprises receiving a data packet with an unknown address.

15. The method of claim 1, wherein said determining comprises:

receiving a data packet; and

failing to decrypt the data packet.

16. The method of claim 1, wherein said determining comprises monitoring noise on an LV power line.

17. The method of claim 17, wherein said determining further comprises recognizing a noise pattern.

18. The method of claim 17, wherein said determining further comprises determining whether the noise is substantially confined within a frequency band.

19. The method of claim 17, wherein said determining further comprises determining that the noise is substantially co-extensive and substantially confined within a frequency band used by at least some in-home power line communication products.

20. A power line communication device configured to facilitate communications over a low voltage power line between a downstream user device and an external upstream device;

comprising;

a communication module configured to communicate over the low voltage power line;

a controller configured to control said module;

wherein said controller is configured to operate said module in a first configuration in which repeating is disabled; and

wherein said controller is configured to operate said module in a second configuration wherein upstream repeating is enabled and downstream repeating is disabled.

21. The device of claim 20, further comprising:

a data port communicatively coupled to said controller; and

wherein said controller is configured to receive utility data via said data port and to cause said module to transmit said utility data over the low voltage power line.

22. The device of claim 20, wherein said controller is configured to operate said module in a third configuration wherein upstream repeating is enabled and downstream repeating is enabled.

23. The device of claim 20, wherein said controller is configured to operate said module in a third configuration wherein upstream repeating is disabled and downstream repeating is enabled.

24. The device of claim 20, wherein said controller transitions from the first configuration to the second configuration in response to a command received via the low voltage power line.

25. The device of claim 20, wherein said controller transitions from the first configuration to the second configuration in response to determining that a value of a parameter associated with a data signal received from the user device is unacceptable.

26. The device of claim 20, wherein said controller transitions from the first configuration to the second configuration in response to determining that a data rate is less than a threshold data rate.

27. The device of claim 20, wherein said controller transitions from the first configuration to the second configuration in response to determining that an error rate is greater than a threshold error rate.

28. A method of providing communications between one or more user devices and an external power line communication device via a low voltage power line, comprising:

enabling upstream repeating;

subsequent to said enabling upstream repeating,

receiving first data in an upstream communication via the LV power line;

transmitting the first data on the low voltage (LV) power line;

receiving second data in a downstream communication via the LV power line; and

not transmitting the second data on the LV power line.

29. The method of claim 28, further comprising:

disabling repeating; and

subsequent to said disabling,

receiving third data in an upstream communication via the low voltage power line; and

not transmitting the third data on the LV power line.

30. The method of claim 29, wherein said disabling is performed after a predetermined time period.

31. The method of claim 28, wherein said enabling is performed in response to detection of a trigger event.

32. The method of claim 28, wherein said enabling is performed in response to receiving a command.

33. The method of claim 28, wherein said enabling is performed by a communication device coupled to a medium voltage (MV) power line, and wherein said enabling comprises transmitting a command.

34. The method of claim 28, wherein said transmitting the first data on the LV power line comprises transmitting the first data on an internal low voltage power line.

35. The method of claim 28, wherein said transmitting the first data on the LV power line comprises transmitting the first data on an external low voltage power line.

36. The method of claim 28, further comprising:

receiving utility usage data;

storing the utility usage data; and

transmitting the utility usage data to the power line communication device via an external low voltage power line.

37. The method of claim 28, further comprising determining that a data rate of communications on the LV power line is less than a threshold data rate;

and

wherein said enabling is performed in response to said determining.

38. The method of claim 28, further comprising determining that an error rate of communications on the LV power line is greater than a threshold error rate;

and

wherein said enabling is performed in response to said determining.

39. The method of claim 28, further comprising:

enabling downstream repeating;

subsequently to said enabling downstream repeating,

receiving third data in a downstream communication via the LV power line; and

transmitting the third data on the LV power line.