Power line network apparatus, system and method

• US 9,590,698 B1
• Filed: 03/23/2015
• Issued: 03/07/2017
• Est. Priority Date: 12/22/2011
• Status: Active Grant

• Current Assignee: Landis+Gyr Inc. (Landis+Gyr Group AG)
• Original Assignee: Landis+Gyr Inc. (Landis+Gyr Group AG)
• Inventors: Duff, John F., Flen, Rolf, Christiansen, Scott H., Johnson, Roland
• Primary Examiner(s): Ahn, Sam K
• Assistant Examiner(s): Murillo Garcia, Fabricio R
• Application Number:
  US14/665,847
• Time in Patent Office: 715 Days
• Field of Search: 375/258
• US Class Current: 1/1
• CPC Class Codes: G06F 8/65 Updates security arrangements therefor G06F21/57
• CPC Class Codes: H04B 2203/5433 Remote metering
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Various aspects of the instant disclosure are directed towards a method for communicating time-based data in a power line communication system. In accordance with one or more example embodiments, firmware is downloaded to a multitude of endpoints over power distribution lines carrying alternating current (AC) power. Endpoint devices targeted for changes to stored firmware are grouped and the firmware is delivered in chunks to each group. As devices receive a particular chunk of firmware, the device advances to a next stage and provides information indicative of this stage, based upon which subsequent chunks of firmware are communicated. This occurs (e.g., on a daily cycle) until the endpoint has received all firmware for an update, after which the endpoint(s) are re-started using the firmware. Accordingly, such updates can be carried out in a cyclic and verifiable manner.

Claims

1. A method for communicating firmware in a power distribution system over power distribution lines carrying alternating current (AC) power, where bandwidth is shared between a plurality of endpoint devices that are configured with circuitry to provide utility usage data over the power distribution lines, the method comprising:

receiving at the plurality of endpoint devices and over the power distribution lines a command to change, by updating, firmware stored in the plurality of endpoint devices;

identifying, by a circuit configured and arranged to collect data in the power distribution system, a first subset of endpoint devices from the plurality of endpoint devices in response to receipt of a first acknowledgment of the command from the first subset of endpoint devices;

communicating, by the circuit configured and arranged to collect data, to the first subset of endpoint devices over the power distribution lines a first subset of the firmware;

identifying, by the circuit configured and arranged to collect data, a second subset of endpoints devices from the first subset of endpoint devices in response to receipt of second acknowledgement relating to the first subset of firmware indicating, in a cyclic status communication, a configuration stage of the second subset of endpoint devices and interleaved with utility usage data received over the power distribution lines, the utility usage data being indicative of at least one of power meter data, readings of water utilities, and readings of gas utilities; and

communicating, by the circuit configured and arranged to collect data, at least a second subset of the firmware to the second subset of endpoint devices for updating firmware in the second subset of the endpoint devices.

2. The method of claim 1, wherein each of the endpoint devices includes a circuit configured and arranged to collect and communicate the utility usage data, the utility usage data indicative of power consumption.

3. The method of claim 1, wherein the subsets of the firmware are communicated over the power distribution lines according to a communication protocol using timing for cyclic communications of the utility usage data between at least one of the endpoint devices and a collector device, including a circuit configured and arranged to collect data, and wherein the command identifies a set of endpoint devices that is selected based upon an available bandwidth on the power distribution lines.

4. The method of claim 1, wherein communicating the second subset of the firmware includes communicating additional subsets of the firmware in stages, based upon a number of the endpoint devices acknowledging receipt of a subset of firmware communicated in a previous stage, until a full set of the firmware has been communicated.

5. The method of claim 1, wherein the communicating at least the second subset of the firmware to the second subset of endpoint devices includes assigning, the second subset of the endpoint devices of a group identification that is based upon a status condition indicating that the second subset of endpoint devices have received the second subset of firmware.

6. The method of claim 1, further comprising, at the plurality of endpoint devices, communicating a status condition characterizing the received subsets and, in response to receiving a full set of firmware, rebooting using the full set of firmware.

7. The method of claim 1, wherein the command includes data that specifies a time for re-flashing of firmware of the plurality of endpoint devices.

8. A circuit-based apparatus in a power distribution system comprising:

a transceiver circuit configured and arranged to communicate, to a plurality of endpoint devices, data over power distribution lines that carry power using alternating current (AC), based on timing indicated at least in part by the alternating current; and

a processing circuit configured and arranged to;

receive at an endpoint device and over the power distribution lines an indication that changes, by updates, to stored firmware in the endpoint device are requested;

in response to a determination of available bandwidth on the power distribution lines for changes to stored firmware in the endpoint device and at least one other endpoint device in the plurality of endpoint devices, communicate and receive at the endpoint device over the power distribution lines and based on timing indicated at least in part by the alternating current;

a command conveyed between the endpoint device and a collector circuit, configured and arranged to collect data in the power distribution system, which is communicatively coupled with a command center over the power distribution lines,

a first subset of the firmware designated for the endpoint device and the at least one other endpoint device for updating the endpoint device and the at least one other endpoint device, in response to after receipt of acknowledgement from the endpoint device and the at least one other endpoint device received via the power distribution lines, and

at least one additional subset of the firmware to at least the endpoint device and the at least one other endpoint device for updating the endpoint device and the at least one other endpoint device, based upon a response of the endpoint devices received over the power distribution lines indicating, in a cyclic status communication, a configuration stage of the endpoint devices and interleaved with utility usage data, the utility usage data being indicative of at least one of power meter data, readings of water utilities, and readings of gas utilities.

9. The apparatus of claim 8, wherein the processing circuit is further configured and arranged to communicate a request to restart the endpoint device using at least one of the subsets of firmware, and wherein each of the endpoint devices is a circuit configured and arranged to collect and communicate data indicative of power consumption.

10. The apparatus of claim 8, wherein the processing circuit is further configured and arranged to communicate restart data that indicates at least one endpoint device is to be restarted using at least one of the subsets of firmware.

11. The apparatus of claim 8, wherein the processing circuit is further configured and arranged to:

communicate restart data that indicates one or more endpoint devices is to be restarted using at least one of the subsets of firmware; and

receive an assigned group identification (ID) and in response to the update status indicating that the one or more endpoint devices has not received firmware packets, receive an assigned different second group ID.

12. The apparatus of claim 8, wherein the processing circuit is further configured and arranged to:

provide a request to restart the one or more endpoint devices to use the first and second subsets of firmware.

13. A circuit-based apparatus in a power distribution system comprising:

transceiver circuitry, including a transformer, configured and arranged to communicate, to a plurality of endpoint devices, data over power distribution lines that carry power using alternating current (AC), based on timing indicated at least in part by the alternating current; and

processing circuitry, including a computer, configured and arranged to communicate information by;

in response to a determination of and related communication to indicate available bandwidth on the power distribution lines for changes to stored firmware in an endpoint device and at least one other endpoint device in the plurality of endpoint devices, communicating and receiving at the endpoint device over the power distribution lines and based on timing indicated at least in part by the alternating current;

a command conveyed between the endpoint device and a collector circuit, configured and arranged to collect data in the power distribution system, which is communicatively coupled with a command center over the power distribution lines,

a first subset of the firmware designated for updating the endpoint device and the at least one other endpoint device, in response to and after receipt of acknowledgement from the endpoint device and the at least one other endpoint device received via the power distribution lines, and

at least one additional subset of the firmware to at least the endpoint device and the at least one other endpoint device for updating the endpoint device and the at least one other endpoint device, based upon a response of the endpoint devices received over the power distribution lines indicating, in a cyclic status communication, a configuration stage of the endpoint devices and interleaved with utility usage data, the utility usage data being indicative of at least one of power meter data, readings of water utilities, and readings of gas utilities.

14. The apparatus of claim 13, further including circuitry configured and arranged to communicate a request to restart the endpoint device using at least one of the sets of firmware.

15. The apparatus of claim 13, further including circuitry configured and arranged to communicate restart data that indicates the endpoint devices is to be restarted using at least one of the sets of firmware.

16. The apparatus of claim 13, wherein each of the endpoint devices is a circuit configured and arranged to collect and communicate data indicative of power consumption.