Distributing metering responses for load balancing an AMR network

• US 20080068994A1
• Filed: 09/13/2007
• Published: 03/20/2008
• Est. Priority Date: 09/15/2006
• Status: Active Grant

• Current Assignee: Itron, Inc.
• Original Assignee: Itron, Inc.
• Inventors: Garrison Stuber, Michael, Buffington, John
• Granted Patent: US 8,055,461 B2
• Time in Patent Office: Days
• US Class Current: 370/230
• CPC Class Codes: G01D 4/004 Remote reading of utility meters to a fixed location
• CPC Class Codes: G01R 22/063 related to remote communication
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

Disclosed are methodology and corresponding apparatus subject matters for providing improved efficiency in the collection of data from a large number of metrology devices associated with an Automated Meter reading (AMR) network. AMR network operation produces randomly spaced transmissions from individual nodes in the network. When an AMR system wishes to retrieve data from a large number of points over an AMR network, a broadcast or multicast request is transmitted to appropriate nodes. A time window is defined either in such request or in the devices themselves such that start and end offsets from the time of the request are received by the node. The start offset provides a quiet period to insure request delivery to all the appropriate nodes. The end offset provides a time by which the requested data must be returned. Responses are sent randomly within the window established by the start and stop offset times.

Claims

1. An advanced metering system with meter response load balancing, comprising:

a plurality of end devices, at least some of which end devices comprise metrology devices; and

a network including a central facility having collection functionality, said network being configured for bi-directional communications between said central facility and each of said plurality of end devices, and said collection functionality being configured so as to broadcast to at least some of said metrology devices a request for data, which request for data includes metrology device instructions for responding to said request for data.

2. An advanced metering system as in claim 1, wherein said metrology device instructions include a start offset and an end offset, thereby defining a metrology device response period.

3. An advanced metering system as in claim 2, wherein metrology devices responding to said request for data are configured for respectively responding at random times within said defined metrology device response period.

4. An advanced metering system as in claim 1, wherein said request for data further includes a control byte for requesting particular types of data to be returned by said metrology devices.

5. An advanced metering system as in claim 4, wherein:

said particular types of data to be returned include at least one of meter reading, load control/demand responses, in home messaging, and restoration operations, such that said collection functionality associates the data returned and the particular type of data requested to discern respective responses from said metrology devices; and

said network is configured for integrating metrology devices operating with at least one of radio, PLC, and IP connections.

6. An advanced metering system as in claim 1, further comprising at least one cell relay, with said at least one cell relay and said network configured such that bi-directional communication between said central facility and selected of said plurality of said end devices passes through said at least one cell relay, whereby bi-directional communication between said central facility and said selected of said plurality of said end devices is conducted by way of said at least one cell relay while bi-directional communication between said central facility and others of said plurality of said end devices is conducted directly, all of which bi-directional communications are configured for occurring at least in part based on an open standard meter communication protocol.

7. An advanced metering system as in claim 1, wherein:

said collection functionality is configured to communicate specific on-demand reporting instructions to specific respectively desired metrology devices; and

wherein said metrology devices are configured to ignore any broadcast request for data or any on-demand reporting instructions not intended for such respective metrology device.

8. An advanced metering system with meter response load balancing, comprising:

a plurality of end devices, at least some of which end devices comprise metrology devices respectively having preprogrammed protocols for responding to requests for data; and

a network including a central facility having collection functionality, said network being configured for bi-directional communications between said central facility and each of said plurality of end devices, and said collection functionality being configured so as to broadcast to at least some of said metrology devices a request for data.

9. An advanced metering system as in claim 8, wherein:

said preprogrammed protocols of said metrology devices respectively include a start offset and an end offset, thereby defining a metrology device response period; and

metrology devices responding to said request for data are configured for respectively responding at random times within said defined metrology device response period.

10. An advanced metering system as in claim 8, wherein said request for data includes a control byte for requesting particular types of data to be returned by said metrology devices.

11. An advanced metering system as in claim 10, wherein:

said particular types of data to be returned include at least one of meter reading, load control/demand responses, in home messaging, and restoration operations, such that said collection functionality associates the data returned and the particular type of data requested to discern respective responses from said metrology devices; and

said network is configured for integrating metrology devices operating with at least one of radio, PLC, and IP connections.

12. An advanced metering system as in claim 8, further comprising at least one cell relay, with said at least one cell relay and said network configured such that bi-directional communication between said central facility and selected of said plurality of said end devices passes through said at least one cell relay, whereby bi-directional communication between said central facility and said selected of said plurality of said end devices is conducted by way of said at least one cell relay while bi-directional communication between said central facility and others of said plurality of said end devices is conducted directly, all of which bi-directional communications are configured for occurring at least in part based on an open standard meter communication protocol.

13. An advanced metering system as in claim 8, wherein:

said collection functionality is configured to broadcast specific on-demand reading instructions to specific respectively desired metrology devices; and

said metrology devices are configured to ignore any broadcast request for data or any on-demand reading instructions not intended for such respective metrology device.

14. Methodology for an advanced metering system with meter response load balancing, comprising:

providing a plurality of end devices, at least some of which end devices comprise metrology devices;

establishing a network including a central facility having collection functionality;

configuring the network for bi-directional communications between such central facility and each of the plurality of end devices; and

using such collection functionality to broadcast to at least some of the metrology devices a request for data, which request for data includes metrology device instructions for responding to the request for data.

15. Methodology as in claim 14, wherein said metrology device instructions include a start offset and an end offset, thereby defining a metrology device response period.

16. Methodology as in claim 15, wherein metrology devices responding to such request for data respectively respond at random times within the defined metrology device response period.

17. Methodology as in claim 14, wherein the request for data further includes a control byte for requesting particular types of data to be returned by the metrology devices.

18. Methodology as in claim 17, further comprising:

using the collection functionality to communicate specific on-demand reporting instructions to specific respectively desired metrology devices; and

wherein

the particular types of data to be returned include at least one of meter reading, load control/demand responses, in home messaging, and restoration operations;

the collection functionality associates the data returned and the particular type of data requested to discern respective responses from the metrology devices;

the network is configured for integrating metrology devices operating with at least one of radio, PLC, and IP connections; and

the metrology devices are configured to ignore any broadcast request for data or any on-demand reporting instructions not intended for such respective metrology device.

19. Methodology as in claim 14, wherein:

establishing a network further includes;

providing at least one cell relay; and

configuring the network such that bi-directional communication between the central facility and selected of the plurality of end devices passes through the at least one cell relay, so that bi-directional communication between the central facility and selected of the plurality of end devices is conducted by way of the cell relay while bi-directional communication between the central facility and others of the plurality of end devices is conducted directly; and

all of such bi-directional communications are configured for occurring at least in part based on an open standard meter communication protocol.

20. Methodology for an advanced metering system with meter response load balancing, comprising:

providing a plurality of end devices, at least some of which end devices comprise metrology devices respectively having preprogrammed protocols for responding to requests for data;

establishing a network including a central facility having collection functionality;

configuring the network for bi-directional communications between such central facility and each of the plurality of end devices; and

using such collection functionality to broadcast to at least some of the metrology devices a request for data.

21. Methodology as in claim 20, wherein:

the preprogrammed protocols of the metrology devices respectively include a start offset and an end offset, thereby defining a metrology device response period; and

metrology devices responding to the request for data are configured for respectively responding at random times within the defined metrology device response period.

22. Methodology as in claim 20, wherein the request for data includes a control byte for requesting particular types of data to be returned by the metrology devices.

23. Methodology as in claim 22, wherein:

the particular types of data to be returned include at least one of meter reading, load control/demand responses, in home messaging, and restoration operations, such that the collection functionality associates the data returned and the particular type of data requested to discern respective responses from the metrology devices; and

the network is configured for integrating metrology devices operating with at least one of radio, PLC, and IP connections.

24. Methodology as in claim 20, wherein:

establishing a network further includes;

providing at least one cell relay; and

configuring the network such that bi-directional communication between the central facility and selected of the plurality of end devices passes through the at least one cell relay, so that bi-directional communication between the central facility and selected of the plurality of end devices is conducted by way of the cell relay while bi-directional communication between the central facility and others of the plurality of end devices is conducted directly; and

all of such bi-directional communications are configured for occurring at least in part based on an open standard meter communication protocol.

25. Methodology as in claim 20, further comprising:

using the collection functionality to communicate specific on-demand reporting instructions to specific respectively desired metrology devices; and

wherein the metrology devices are configured to ignore any broadcast request for data or any on-demand reporting instructions not intended for such respective metrology device.