Device and Method for Communicating over Power Lines

• US 20100111199A1
• Filed: 11/06/2008
• Published: 05/06/2010
• Est. Priority Date: 11/06/2008
• Status: Abandoned Application

• Current Assignee: Current Technologies International GmbH
• Original Assignee: Current Technologies International GmbH
• Inventors: Sharma, Manu
• Application Number:
  US12/266,249
• Publication Number:
  US 20100111199A1
• Time in Patent Office: Days
• US Class Current: 375/257
• CPC Class Codes: H04B 2203/5433 Remote metering
• CPC Class Codes: H04B 2203/545 Audio/video application, e.g. interphone
• CPC Class Codes: H04B 2203/5495 having measurements and testing channel
• CPC Class Codes: H04B 3/542 the information being in digital form
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0044 allocation of payload

Abstract

A method and device for communicating over a power line is provided. In one embodiment, the device includes a multiband media access control (MAC) layer configured to select one of a plurality of frequency bands for communication and a multiband physical layer configured to communicate directly with said multiband MAC layer and to communicate over the power line via any one of the plurality of frequency bands. The multiband MAC layer may include a power control module configured to provide information to said physical layer to control the transmission power of data transmitted by said physical layer and a modulation control module configured to select one of plurality of modulation schemes for data transmitted by said physical layer. The physical layer may include a plurality of physical drivers with each physical driver configured to transmit and/or receive data in a different one of the plurality of frequency bands.

Claims

1. A device for communicating over a power line, comprising:

a media access control (MAC) layer;

a multiband MAC layer configured to communicate directly with said MAC layer and configured to select one of a plurality of frequency bands for communication; and

a multiband physical layer configured to communicate directly with said multiband MAC layer and to communicate over the power line via any one of the plurality of frequency bands.

2. The device according to claim 1, wherein said multiband MAC layer comprises a power control module configured to provide information to said physical layer to control a transmission power of data transmitted by said physical layer.

3. The device according to claim 1, wherein said multiband MAC layer comprises a modulation control module configured to select one of plurality of schemes of modulation for transmitted data.

4. The device according to claim 3, wherein said multiband MAC layer comprises an error correction control module configured to control error correction.

5. The device according to claim 1, wherein said physical layer 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 device according to claim 1, wherein said physical layer comprises a first physical driver and a second physical driver;

and

wherein said first physical driver and second physical driver are configured to concurrently transmit data and receive data, respectively.

7. The device according to claim 1, further comprising:

an applications layer;

a convergence layer configured to communicate directly with said applications layer; and

wherein said MAC layer is configured to communicate directly with said convergence layer.

8. The device according to claim 1, wherein said multiband MAC layer comprises a data multiplexer/demultiplexer configured to communicate data to said MAC layer, said multiband physical layer, and at least one other component of said multiband MAC layer.

9. The device according to claim 1, wherein said multiband MAC layer is configurable to maintain data of one or more channel conditions for a multitude of the plurality of frequency bands.

10. The device according to claim 9, wherein said multiband MAC layer is configurable to change a modulation scheme for communications based, at least in part, on a change in a channel condition of a frequency band.

11. The device according to claim 9, wherein said multiband MAC layer 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 used for a communication.

12. The device according to claim 1, wherein said multiband MAC layer is configured receive data of one or more operational parameters;

and wherein at least one of said operational parameters comprises a Receive Signal Strength Indicator.

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

14. A device for communicating over a power line, comprising:

a physical layer comprising a plurality of physical drivers configured to communicate over the power line;

wherein a multitude of said plurality of physical drivers are configured to communicate in different frequency bands;

a band controller configured to select a first frequency band of the plurality of frequency bands for a communication; and

wherein said band controller is configured to provide data to be communicated to a physical driver corresponding to the selected frequency band for transmission by said physical driver.

15. The device according to claim 14, further comprising a power module is configured to provide information to said physical layer to control a transmission power of data transmitted by said physical layer.

16. The device according to claim 14, further comprising a modulation module configurable to determine one of plurality of schemes of modulation for data transmitted by said physical layer.

17. The device according to claim 14, wherein a first physical driver and a second physical driver are configured to concurrently transmit data and receive data, respectively.

18. The device according to claim 14, wherein said band controller is configured to maintain data of one or more channel conditions for a multitude of the plurality of bands.

19. The device according to claim 18, wherein said multiband MAC layer is configurable to change a modulation scheme for communications based, at least in part, on a change in a channel condition of a frequency band.

20. The device according to claim 18, wherein said band controller 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.

21. The device according to claim 18, wherein said band controller is configurable to receive data of one or more operational parameters;

and wherein at least one said operational parameters comprises a Receive Signal Strength Indicator.

22. A method of communicating data over a power line, comprising:

receiving a first data unit to be transmitted over the power line;

storing data one or more channel conditions in a memory for a multitude of a plurality of frequency bands;

selecting one of the plurality of frequency bands for transmission of the first data unit based, at least in part, on a channel condition;

selecting a modulation scheme from a plurality of modulation schemes;

providing the first data unit to a first physical driver of a plurality of physical drivers for communication over the power line; and

transmitting the first data unit over the power line with said first physical driver using the selected modulation scheme.

23. The method according to claim 22, further comprising providing information to said first physical driver to control a power of transmission of the data unit by said first physical driver.

24. The method according to claim 22, further comprising receiving a second data unit with a second physical driver concurrently with said transmitting the first data unit.

25. The method according to claim 22, further comprising storing data of one or more operational parameters in a memory.

26. The method according to claim 22, further comprising changing a modulation scheme based, at least in part, on a change in a channel condition of a frequency band.

27. The method according to claim 25, further comprising changing a frequency band of communications based, at least in part, on a change in a channel condition of a frequency band.

28. The method according to claim 22, further comprising determining one or more operational parameters for at least one of the plurality of frequency bands;

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

29. The method according to claim 28, further comprising changing a frequency band of communications based, at least in part, on a change in an operational parameter of a frequency band used for a communication.

30. The method according to claim 22, wherein the device is configured to communicate in a multitude of the plurality of frequency bands concurrently.

31. The method according to claim 22, wherein the first data unit is transmitted to a remote device and the method further comprises dynamically selecting a different frequency band for transmission of a second data unit to the remote device.

32. The method according to claim 22, further comprising receiving a second data unit that comprises utility data.

33. The method according to claim 22, further comprising transmitting data signals in a multitude of frequency bands while concurrently receiving data signals in a multitude of frequency bands.