Granted Patent B2

US 8,855,279 · App. 12/900,884 · Granted Oct 7, 2014

Abstract

Claims (27)

1. A method for a communication device operating within an active load management system to control transmission of at least one message over a fixed bandwidth communication link, the at least one message providing information relating to electric power consumption by power consuming devices located at a service point at which the communication device is located and fixedly positioned, the method comprising:

receiving at least one control message from a central controller, the at least one control message including transmission time determination parameters, the transmission time determination parameters including (a) an identifier associated with the communication device, (b) a number representing a quantity of communication devices within the active load management system, (c) a number representing a quantity of transmission increments within a reporting period during which messages are to be transmitted by the plurality of communication devices, and (d) identification of a transmission increment assigned to a group of communication devices containing the communication device; and

determining a transmission time for the at least one message based on the transmission time determination parameters;

wherein the step of determining a transmission time for the at least one message comprises:

determining a quantity of communication devices within the group containing the communication device based on (a) the number representing the quantity of communication devices within the active load management system and (b) the number representing the quantity of transmission increments within the reporting period;

determining a duration of the transmission increment assigned to the group containing the communication device; and

determining a transmission time for the at least one message based on (a) the identifier associated with the communication device, (b) the quantity of communication devices within the group containing the communication device, and (c) the duration of the transmission increment assigned to the group containing the communication device.

2. The method of claim 1 , wherein the step of determining a duration of the transmission increment assigned to the group containing the communication device comprises:

determining the duration of the transmission increment allocated to the group of communication devices containing the communication device based on the quantity of transmission increments within the reporting period and a duration of the reporting period.

3. The method of claim 1 , further comprising:

transmitting the at least one message at the transmission time over the communication link.

4. An active load management system operable to control transmission of messages over a communication link, the messages providing information reporting electric power consumption by power consuming devices located at service points receiving electrical power from a utility, the active load management system comprising:

a plurality of active load client devices, each active load client device including:

a communications interface operable to receive at least one control message indicating a transmission time for transmitting at least one report message, the at least one report message providing information relating to electric power consumption by power consuming devices located at a service point at which the active load client device is located; and

a device control manager operably coupled to the communications interface, the device control manager operable to generate the at least one report message and supply the at least one report message to the communications interface for transmission at the transmission time;

an active load director that includes:

an active load client manager operable to:

determine a transmission period during which report messages are to be transmitted by the plurality of active load client devices,

determine a plurality of transmission increments within the transmission period,

allocate each transmission increment to a respective group of the plurality of active load client devices,

determine transmission times for the report messages based on (a) identifiers for the plurality of active load client devices, (b) respective durations of transmission increments allocated to respective groups of the plurality of active load client devices, and (c) a quantity of active load client devices in each group, and

generate control messages that include indications of the transmission times; and

an active load client interface operably coupled to the active load client manager and the communication link, the active load client interface operable to communicate the control messages to the plurality of active load client devices over the communication link.

5. The active load management system of claim 4 , wherein the active load director further includes:

a utility control center command processor operably coupled to the active load client manager and a second communication link between the active load director and a control center of the utility, the utility control center command processor operable to receive from the control center of the utility and provide to the active load client manager at least one update message including (a) the identifiers for the plurality of active load client devices, (b) a number representing a quantity of the plurality of active load client devices, (c) a number representing a quantity of the plurality of transmission increments within the transmission period, and (d) identifications of transmission increments assigned to groups of the plurality of active load client devices;

wherein the active load client manager is further operable to determine transmission times for the report messages based on the at least one update message.

6. The active load management system of claim 4 , wherein the communications interface supports a wide area wireless protocol.

Assignments (10)