CA2581491C - System for automated management of spontaneous node migration in a distributed fixed wireless network - Google Patents
System for automated management of spontaneous node migration in a distributed fixed wireless network Download PDFInfo
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- CA2581491C CA2581491C CA2581491A CA2581491A CA2581491C CA 2581491 C CA2581491 C CA 2581491C CA 2581491 A CA2581491 A CA 2581491A CA 2581491 A CA2581491 A CA 2581491A CA 2581491 C CA2581491 C CA 2581491C
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/085—Retrieval of network configuration; Tracking network configuration history
- H04L41/0853—Retrieval of network configuration; Tracking network configuration history by actively collecting configuration information or by backing up configuration information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/085—Retrieval of network configuration; Tracking network configuration history
- H04L41/0859—Retrieval of network configuration; Tracking network configuration history by keeping history of different configuration generations or by rolling back to previous configuration versions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/002—Telephonic communication systems specially adapted for combination with other electrical systems with telemetering systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
- H04W8/08—Mobility data transfer
Abstract
Methods and systems of managing node migration in a wireless network where nodes may spontaneously migrate from a first communication path to a second communication path. The system includes a first collector disposed within the first communication path and a second collector disposed within the second communication path, a network management server that determines a network state and maintains a database of the network state. When the network management server detects that a node has migrated from the first communication path to the second communication path, information associated with the node is retrieved from the first collector and downloaded to the second collector to ensure the proper operation of the node in the network.
Description
SYSTEM FOR AUTOMATED MANAGEMENT OF SPONTANEOUS NODE
MIGRATION IN A DISTRIBUTED FIXED WIRELESS NETWORK
CROSS-REFERENCE TO RELATED APPLICATIONS
[00011 This application claims priority to U.S. Application Serial No.
10/949,682 filed September 24, 2004.
FIELD OF THE INVENTION
MIGRATION IN A DISTRIBUTED FIXED WIRELESS NETWORK
CROSS-REFERENCE TO RELATED APPLICATIONS
[00011 This application claims priority to U.S. Application Serial No.
10/949,682 filed September 24, 2004.
FIELD OF THE INVENTION
[0002] The present invention relates to wireless networks for collecting data, and more particularly, to systems and methods for managing the migration of nodes on such networks.
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION
[0003] The collection of meter data from electrical energy, water, and gas meters has traditionally been performed by human meter-readers. The meter-reader travels to the meter location, which is frequently on the customer's premises, visually inspects the meter, and records the reading. The meter-reader may be prevented from gaining access to the meter as a result of inclement weather or, where the meter is located within the customer's premises, due to an absentee customer. This methodology of meter data collection is labor intensive, prone to human error, and often results in stale and inflexible metering data.
[00041 Some meters have been enhanced to include a one-way radio transmitter for transmitting metering data to a receiving device. A person collecting meter data that is equipped with an appropriate radio receiver need only come into proximity with a meter to read the meter data and need not visually inspect the meter. Thus, a meter-reader may walk or drive by a meter location to take a meter reading. While this represents an improvement over visiting and visually inspecting each meter, it still requires human involvement in the process.
[0005] An automated means for collecting meter data involves a fixed wireless network. Devices such as, for example, repeaters and gateways are permanently affixed on rooftops and pole-tops and strategically positioned to receive data from enhanced meters fitted with radio-transmitters. Typically, these transmitters operate in the 902-928 MHz range and employ Frequency Hopping Spread Spectrum (FHSS) technology to spread the transmitted energy over a large portion of the available bandwidth.
[0006] Data is transmitted from the meters to the repeaters and gateways and ultimately communicated to a central location. While fixed wireless networks greatly reduce human involvement in the process of meter reading, such systems require the installation and maintenance of a fixed network of repeaters, gateways, and servers.
Identifying an acceptable location for a repeater or server and physically placing the device in the desired location on top of a building or utility pole is a tedious and labor-intensive operation.
Furthermore, each meter that is installed in the network needs to be manually configured to communicate with a particular portion of the established network. When a portion of the network fails to operate as intended, human intervention is typically required to test the effected components and reconfigure the network to return it to operation.
[0007] Thus, while existing fixed wireless systems have reduced the need for human involvement in the daily collection of meter data, such systems require substantial human investment in planning, installation, and maintenance and are relatively inflexible and difficult to manage. Therefore, there is a need for networks that do not depend on pre-determined communication paths, but instead rapidly adapt to changing wireless communications conditions so as to maintain optimal network connectivity. These networks, where nodes in the network can change communication paths spontaneously based on changing wireless communication performance, have a need for a system to manage the wireless network as nodes migrate among the many communication paths.
SUMMARY OF THE INVENTION
[0008] The present invention is directed to methods and systems of managing the migration of wireless nodes amongst repeaters and collectors in a wireless network. According to a first aspect of the invention, there is provided a system for managing nodes migrating from a first communication path to a second communication path in a wireless network.
The system includes a first collector disposed within the first communication path and a second collector disposed within the second communication path, a network management server that determines a network state, and a network management system that maintains a database of the network state.
When the network management server detects that a node has migrated from the first communication path to the second communication path, information associated with the node is retrieved from a global database of device configuration parameters and downloaded to the second collector. In this way, the system ensures that each collector has the configuration information for each meter communicating through it.
[0009] According to a feature, a current network state database and a historical network state database may be update to reflect that the node has migrated from the first communication path to the second communication path.
[0010] According to another aspect of the invention, there is provided a method of managing nodes that spontaneously migrate among plural communication paths in a wireless network. The method includes detecting a migration of a node from a first communication path to a second communication path; updating a network state; retrieving information associated with the node from a first intermediary node in the first communication path;
and downloading the information to a second intermediary node in the second communication path.
[0011] According to a feature, a current network state database and a historical network state database may be updated to reflect that the node has migrated from the first communication path to the second communication path. Also, the node may be configured in the second communication path in accordance with the information. The collected data from the first intermediary node may be merged with second collected data that is collected after the node migrated to the second communication path. The information may be removed from the first intermediary node after being downloaded to the second intermediary node.
[0012] According to another aspect of the invention there is provided a method for managing a spontaneous migration of a meter from a first collector in a first communication path to a second collector in a second communication path. The method includes detecting the spontaneous migration; retrieving configuration information and first collected data associated with the meter; contacting the second collector and download the configuration information and the first collected data; and merging the first collected data with second collected data associated with the meter stored in the second collector.
[0013] Additional features and advantages of the invention will be made apparent from the following detailed description of illustrative embodiments that proceeds with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The foregoing summary, as well as the following detailed description of preferred embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there is shown in the drawings exemplary constructions of the invention; however, the invention is not limited to the specific methods and instrumentalities disclosed. In the drawings:
[0015] Fig. 1 is a diagram of a wireless system for collecting data from remote devices;
[0016] Fig. 2 expands upon the diagram of Fig. 1 and illustrates a system in which the present invention is embodied;
[0017] Fig. 3 illustrates an exemplary sequence of events when a meter switches from a first collector to a second collector.
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
[0018] Exemplary systems and methods for gathering meter data are described below with reference to Figs. 1-3. It will be appreciated by those of ordinary skill in the art that the description given herein with respect to those figures is for exemplary purposes only and is not intended in any way to limit the scope of potential embodiments.
[0019] Generally, a plurality of meter devices, which operate to track usage of a service or commodity such as, for example, electricity, water, and gas, are operable to wirelessly communicate with each other. A collector is operable to automatically identify and register meters for communication with the collector. When a meter is installed, the meter becomes registered with the collector that can provide a communication path to the meter. The collectors receive and compile metering data from a plurality of meter devices via wireless communications. A communications server communicates with the collectors to retrieve the compiled meter data.
[0020] Fig. 1 provides a diagram of an exemplary metering system 110. System comprises a plurality of meters 114, which are operable to sense and record usage of a service or commodity such as, for example, electricity, water, or gas. Meters 114 may be located at customer premises such as, for example, a home or place of business. Meters 114 comprise an antenna and are operable to transmit data, including service usage data, wirelessly. Meters 114 may be further operable to receive data wirelessly as well. In an illustrative embodiment, meters 114 may be, for example, a electrical meters manufactured by Elster Electricity, LLC.
[0021] System 110 further comprises collectors 116. Collectors 116 are also meters operable to detect and record usage of a service or commodity such as, for example, electricity, water, or gas. Collectors 116 comprise an antenna and are operable to send and receive data wirelessly. In particular, collectors 116 are operable to send data to and receive data from meters 114. In an illustrative embodiment, meters 114 may be, for example, an electrical meter manufactured by Elster Electricity, LLC.
[00041 Some meters have been enhanced to include a one-way radio transmitter for transmitting metering data to a receiving device. A person collecting meter data that is equipped with an appropriate radio receiver need only come into proximity with a meter to read the meter data and need not visually inspect the meter. Thus, a meter-reader may walk or drive by a meter location to take a meter reading. While this represents an improvement over visiting and visually inspecting each meter, it still requires human involvement in the process.
[0005] An automated means for collecting meter data involves a fixed wireless network. Devices such as, for example, repeaters and gateways are permanently affixed on rooftops and pole-tops and strategically positioned to receive data from enhanced meters fitted with radio-transmitters. Typically, these transmitters operate in the 902-928 MHz range and employ Frequency Hopping Spread Spectrum (FHSS) technology to spread the transmitted energy over a large portion of the available bandwidth.
[0006] Data is transmitted from the meters to the repeaters and gateways and ultimately communicated to a central location. While fixed wireless networks greatly reduce human involvement in the process of meter reading, such systems require the installation and maintenance of a fixed network of repeaters, gateways, and servers.
Identifying an acceptable location for a repeater or server and physically placing the device in the desired location on top of a building or utility pole is a tedious and labor-intensive operation.
Furthermore, each meter that is installed in the network needs to be manually configured to communicate with a particular portion of the established network. When a portion of the network fails to operate as intended, human intervention is typically required to test the effected components and reconfigure the network to return it to operation.
[0007] Thus, while existing fixed wireless systems have reduced the need for human involvement in the daily collection of meter data, such systems require substantial human investment in planning, installation, and maintenance and are relatively inflexible and difficult to manage. Therefore, there is a need for networks that do not depend on pre-determined communication paths, but instead rapidly adapt to changing wireless communications conditions so as to maintain optimal network connectivity. These networks, where nodes in the network can change communication paths spontaneously based on changing wireless communication performance, have a need for a system to manage the wireless network as nodes migrate among the many communication paths.
SUMMARY OF THE INVENTION
[0008] The present invention is directed to methods and systems of managing the migration of wireless nodes amongst repeaters and collectors in a wireless network. According to a first aspect of the invention, there is provided a system for managing nodes migrating from a first communication path to a second communication path in a wireless network.
The system includes a first collector disposed within the first communication path and a second collector disposed within the second communication path, a network management server that determines a network state, and a network management system that maintains a database of the network state.
When the network management server detects that a node has migrated from the first communication path to the second communication path, information associated with the node is retrieved from a global database of device configuration parameters and downloaded to the second collector. In this way, the system ensures that each collector has the configuration information for each meter communicating through it.
[0009] According to a feature, a current network state database and a historical network state database may be update to reflect that the node has migrated from the first communication path to the second communication path.
[0010] According to another aspect of the invention, there is provided a method of managing nodes that spontaneously migrate among plural communication paths in a wireless network. The method includes detecting a migration of a node from a first communication path to a second communication path; updating a network state; retrieving information associated with the node from a first intermediary node in the first communication path;
and downloading the information to a second intermediary node in the second communication path.
[0011] According to a feature, a current network state database and a historical network state database may be updated to reflect that the node has migrated from the first communication path to the second communication path. Also, the node may be configured in the second communication path in accordance with the information. The collected data from the first intermediary node may be merged with second collected data that is collected after the node migrated to the second communication path. The information may be removed from the first intermediary node after being downloaded to the second intermediary node.
[0012] According to another aspect of the invention there is provided a method for managing a spontaneous migration of a meter from a first collector in a first communication path to a second collector in a second communication path. The method includes detecting the spontaneous migration; retrieving configuration information and first collected data associated with the meter; contacting the second collector and download the configuration information and the first collected data; and merging the first collected data with second collected data associated with the meter stored in the second collector.
[0013] Additional features and advantages of the invention will be made apparent from the following detailed description of illustrative embodiments that proceeds with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The foregoing summary, as well as the following detailed description of preferred embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there is shown in the drawings exemplary constructions of the invention; however, the invention is not limited to the specific methods and instrumentalities disclosed. In the drawings:
[0015] Fig. 1 is a diagram of a wireless system for collecting data from remote devices;
[0016] Fig. 2 expands upon the diagram of Fig. 1 and illustrates a system in which the present invention is embodied;
[0017] Fig. 3 illustrates an exemplary sequence of events when a meter switches from a first collector to a second collector.
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
[0018] Exemplary systems and methods for gathering meter data are described below with reference to Figs. 1-3. It will be appreciated by those of ordinary skill in the art that the description given herein with respect to those figures is for exemplary purposes only and is not intended in any way to limit the scope of potential embodiments.
[0019] Generally, a plurality of meter devices, which operate to track usage of a service or commodity such as, for example, electricity, water, and gas, are operable to wirelessly communicate with each other. A collector is operable to automatically identify and register meters for communication with the collector. When a meter is installed, the meter becomes registered with the collector that can provide a communication path to the meter. The collectors receive and compile metering data from a plurality of meter devices via wireless communications. A communications server communicates with the collectors to retrieve the compiled meter data.
[0020] Fig. 1 provides a diagram of an exemplary metering system 110. System comprises a plurality of meters 114, which are operable to sense and record usage of a service or commodity such as, for example, electricity, water, or gas. Meters 114 may be located at customer premises such as, for example, a home or place of business. Meters 114 comprise an antenna and are operable to transmit data, including service usage data, wirelessly. Meters 114 may be further operable to receive data wirelessly as well. In an illustrative embodiment, meters 114 may be, for example, a electrical meters manufactured by Elster Electricity, LLC.
[0021] System 110 further comprises collectors 116. Collectors 116 are also meters operable to detect and record usage of a service or commodity such as, for example, electricity, water, or gas. Collectors 116 comprise an antenna and are operable to send and receive data wirelessly. In particular, collectors 116 are operable to send data to and receive data from meters 114. In an illustrative embodiment, meters 114 may be, for example, an electrical meter manufactured by Elster Electricity, LLC.
[0022] A collector 116 and the meters 114 for which it is configured to receive meter data define a subnet/LAN 120 of system 110. As used herein, meters 114 and collectors 116 maybe considered as nodes in the subnet 120. For each subnet/LAN 120, data is collected at collector 116 and periodically transmitted to a data collection server 206.
The data collection server 206 stores the data for analysis and preparation of bills. The data collection server 206 may be a specially programmed general purpose computing system and may communicate with collectors 116 wirelessly or via a wire line connection such as, for example, a dial-up telephone connection or fixed wire network.
[0023] Generally, collector 116 and meters 114 communicate with and amongst one another using any one of several robust wireless techniques such as, for example, frequency hopping spread spectrum (FHSS) and direct sequence spread spectrum (DSSS). As illustrated, meters 114a are "first level" meters that communicate with collector 116, whereas meters 114b are higher level meters that communicate with other meters in the network that forward information to the collector 116.
[0024] Referring now to Fig. 2, there is illustrated a system 200 in which the present invention may be embodied. The system 200 includes a network management server 202, a network management system (NMS) 204 and a data collection server 206 that together manage one or more subnets/LANs 120 and their constituent nodes. The NMS 204 tracks changes in network state, such as new nodes registering/unregistering with the system 200, node communication paths changing, etc. This information is collected for each subnet/LAN 120 and are detected and forwarded to the network management server 202 and data collection server 206.
[0025] In accordance with an aspect of the invention, communication between nodes and the system 200 is accomplished using the LAN ID, however it is preferable for customers to query and communicate with nodes using their own identifier. To this end, a marriage file 208 may be used to correlate a customer serial number, a manufacturer serial number and LAN ID
for each node (e.g., meters 114a and collectors 116) in the subnet/LAN 120. A
device configuration database 210 stores configuration information regarding the nodes. For example, in the metering system 110, the device configuration database may include data regarding time of use (TOU) switchpoints, etc. for the meters 114a and collectors 116 communicating to the system 200. A data collection requirements database 212 contains information regarding the data to be collected on a per node basis. For example, a user may specify that metering data such as load profile, demand, TOU, etc. is to be collected from particular meter(s) 114a. Reports 214 containing information on the network configuration may be automatically generated or in accordance with a user request.
[00261 The network management system (NMS) 204 maintains a database describing the current state of the global fixed network system (current network state 220) and a database describing the historical state of the system (historical network state 222).
The current network state 220 contains data regarding current meter to collector assignments, etc.
for each subnet/LAN 120. The historical network state 222 is a database from which the state of the network at a particular point in the past can be reconstructed. The NMS 204 is responsible for, amongst other things, providing reports 214 about the state of the network.
The NMS 204 may be accessed via an API 220 that is exposed to a user interface 216 and a Customer Information System (CIS) 218. Other external interfaces may be implemented in accordance with the present invention. In addition, the data collection requirements stored in the database 212 may be set via the user interface 216 or CIS 218.
[00271 The data collection server 206 collects data from the nodes (e.g., collectors 116) and stores the data in a database 224. The data includes metering information, such as energy consumption and may be used for billing purposes, etc. by a utility provider.
[00281 The network management server 202, network management system 204 and data collection server 206 communicate with the nodes in each subnet/LAN 120 via a communication system 226. The communication system 226 may be a Frequency Hopping Spread Spectrum radio network, a mesh network, a Wi-Fi (802.11) network, a Wi-Max (802.16) network, a land line (POTS) network, etc., or any combination of the above and enables the system 200 to communicate with the metering system 110.
[00291 The present invention provides a system and method for downloading a meter's collection data from an old collector to a new collector upon determining that the meter changed collectors. The present invention serves to ensure that the new collector is able to provide accurate metering data to the system 200 when requested, as well as properly configure the meter. With reference to Fig. 3, it is shown that the meter 114a has changed its communication path from collector A to collector B (steps 1-2). In the exemplary communication paths, the collectors are intermediary nodes between the meter 114a and the communication system 226.
Next, the network management server 202 detects the change in the communication path of meter 114a from LAN A to LAN B (step 3). The network management server 202 then sends network state updates to the network configuration system 204 and the data collection system 206 (step 4). A data collection requirements database 212, may also be updated, if necessary.
The network management system 204 then updates the current network configuration 220 (step 5) and the historical network configuration 222 (step 6) to reflect the change.
[00301 Prior to the meter 114a changing LANs, it is possible that collector A
in LAN A
has collected meter data and contains configuration information associated with the meter 114a.
This data and configuration information may include historical demand, load profile and event data. If collector A has such data, it is advantageous to make collector B
aware of that data in order to accurately collect subsequent data from the meter 114a. Therefore, according to the present invention, to ensure that collector B has all of the data and configuration information associated with meter 114a, the system 200 contacts collector A after detecting the change (step 7) and downloads the meter's settings and data from collector A. Next, the system 200 communicates the information to collector B (step 8) where the settings and data from collector A are merged with data and configuration information contained in collector B
for the meter 114a. The data contained in collector A is removed to free up space on the collector. In this manner, meter data and configuration information is maintained at the appropriate collector. As such, collector B will have all of the historical information for meter 114a and will be able to accurately provide metering data to the system 200 when requested.
[00311 While systems and methods have been described and illustrated with reference to specific embodiments, those skilled in the art will recognize that modification and variations may be made without departing from the principles described above and set forth in the following claims. Accordingly, reference should be made to the following claims as describing the scope of disclosed embodiments.
The data collection server 206 stores the data for analysis and preparation of bills. The data collection server 206 may be a specially programmed general purpose computing system and may communicate with collectors 116 wirelessly or via a wire line connection such as, for example, a dial-up telephone connection or fixed wire network.
[0023] Generally, collector 116 and meters 114 communicate with and amongst one another using any one of several robust wireless techniques such as, for example, frequency hopping spread spectrum (FHSS) and direct sequence spread spectrum (DSSS). As illustrated, meters 114a are "first level" meters that communicate with collector 116, whereas meters 114b are higher level meters that communicate with other meters in the network that forward information to the collector 116.
[0024] Referring now to Fig. 2, there is illustrated a system 200 in which the present invention may be embodied. The system 200 includes a network management server 202, a network management system (NMS) 204 and a data collection server 206 that together manage one or more subnets/LANs 120 and their constituent nodes. The NMS 204 tracks changes in network state, such as new nodes registering/unregistering with the system 200, node communication paths changing, etc. This information is collected for each subnet/LAN 120 and are detected and forwarded to the network management server 202 and data collection server 206.
[0025] In accordance with an aspect of the invention, communication between nodes and the system 200 is accomplished using the LAN ID, however it is preferable for customers to query and communicate with nodes using their own identifier. To this end, a marriage file 208 may be used to correlate a customer serial number, a manufacturer serial number and LAN ID
for each node (e.g., meters 114a and collectors 116) in the subnet/LAN 120. A
device configuration database 210 stores configuration information regarding the nodes. For example, in the metering system 110, the device configuration database may include data regarding time of use (TOU) switchpoints, etc. for the meters 114a and collectors 116 communicating to the system 200. A data collection requirements database 212 contains information regarding the data to be collected on a per node basis. For example, a user may specify that metering data such as load profile, demand, TOU, etc. is to be collected from particular meter(s) 114a. Reports 214 containing information on the network configuration may be automatically generated or in accordance with a user request.
[00261 The network management system (NMS) 204 maintains a database describing the current state of the global fixed network system (current network state 220) and a database describing the historical state of the system (historical network state 222).
The current network state 220 contains data regarding current meter to collector assignments, etc.
for each subnet/LAN 120. The historical network state 222 is a database from which the state of the network at a particular point in the past can be reconstructed. The NMS 204 is responsible for, amongst other things, providing reports 214 about the state of the network.
The NMS 204 may be accessed via an API 220 that is exposed to a user interface 216 and a Customer Information System (CIS) 218. Other external interfaces may be implemented in accordance with the present invention. In addition, the data collection requirements stored in the database 212 may be set via the user interface 216 or CIS 218.
[00271 The data collection server 206 collects data from the nodes (e.g., collectors 116) and stores the data in a database 224. The data includes metering information, such as energy consumption and may be used for billing purposes, etc. by a utility provider.
[00281 The network management server 202, network management system 204 and data collection server 206 communicate with the nodes in each subnet/LAN 120 via a communication system 226. The communication system 226 may be a Frequency Hopping Spread Spectrum radio network, a mesh network, a Wi-Fi (802.11) network, a Wi-Max (802.16) network, a land line (POTS) network, etc., or any combination of the above and enables the system 200 to communicate with the metering system 110.
[00291 The present invention provides a system and method for downloading a meter's collection data from an old collector to a new collector upon determining that the meter changed collectors. The present invention serves to ensure that the new collector is able to provide accurate metering data to the system 200 when requested, as well as properly configure the meter. With reference to Fig. 3, it is shown that the meter 114a has changed its communication path from collector A to collector B (steps 1-2). In the exemplary communication paths, the collectors are intermediary nodes between the meter 114a and the communication system 226.
Next, the network management server 202 detects the change in the communication path of meter 114a from LAN A to LAN B (step 3). The network management server 202 then sends network state updates to the network configuration system 204 and the data collection system 206 (step 4). A data collection requirements database 212, may also be updated, if necessary.
The network management system 204 then updates the current network configuration 220 (step 5) and the historical network configuration 222 (step 6) to reflect the change.
[00301 Prior to the meter 114a changing LANs, it is possible that collector A
in LAN A
has collected meter data and contains configuration information associated with the meter 114a.
This data and configuration information may include historical demand, load profile and event data. If collector A has such data, it is advantageous to make collector B
aware of that data in order to accurately collect subsequent data from the meter 114a. Therefore, according to the present invention, to ensure that collector B has all of the data and configuration information associated with meter 114a, the system 200 contacts collector A after detecting the change (step 7) and downloads the meter's settings and data from collector A. Next, the system 200 communicates the information to collector B (step 8) where the settings and data from collector A are merged with data and configuration information contained in collector B
for the meter 114a. The data contained in collector A is removed to free up space on the collector. In this manner, meter data and configuration information is maintained at the appropriate collector. As such, collector B will have all of the historical information for meter 114a and will be able to accurately provide metering data to the system 200 when requested.
[00311 While systems and methods have been described and illustrated with reference to specific embodiments, those skilled in the art will recognize that modification and variations may be made without departing from the principles described above and set forth in the following claims. Accordingly, reference should be made to the following claims as describing the scope of disclosed embodiments.
Claims (15)
1. A system for managing a wireless network of meters, the system comprising:
a first collector and a first plurality of meters that communicate wirelessly with said first collector, a second collector and a second plurality of meters that communicate wirelessly with said second collector, wherein each of said first plurality of meters has a communication path to the first collector that is either direct or indirect through one or more intermediate meters in said first plurality of meters that serve as repeaters, and wherein each of said second plurality of meters has a communication path to the second collector that is either direct or indirect through one or more intermediate meters in said second plurality of meters that serve as repeaters, the wireless communication paths between each meter and a respective collector defining a layout of the network;
a network management server that determines a network state; and a network management system that maintains a database of said network state, wherein when said network management server detects that a one of said first plurality of meters is no longer in communication with said first collector but is instead communicating with said second collector and thus has migrated from said first collector to said second collector and has become one of said second plurality of meters, information associated with said meter is retrieved from said network management server and downloaded to said second collector;
wherein said information associated with said meter comprises first collected data collected by said first collector from said meter;
wherein second collector data collected by the second collector from said meter is merged at the second collector with the first collected data, and wherein said first collected data and said second collected data comprise metering information representative of usage of a service or commodity.
a first collector and a first plurality of meters that communicate wirelessly with said first collector, a second collector and a second plurality of meters that communicate wirelessly with said second collector, wherein each of said first plurality of meters has a communication path to the first collector that is either direct or indirect through one or more intermediate meters in said first plurality of meters that serve as repeaters, and wherein each of said second plurality of meters has a communication path to the second collector that is either direct or indirect through one or more intermediate meters in said second plurality of meters that serve as repeaters, the wireless communication paths between each meter and a respective collector defining a layout of the network;
a network management server that determines a network state; and a network management system that maintains a database of said network state, wherein when said network management server detects that a one of said first plurality of meters is no longer in communication with said first collector but is instead communicating with said second collector and thus has migrated from said first collector to said second collector and has become one of said second plurality of meters, information associated with said meter is retrieved from said network management server and downloaded to said second collector;
wherein said information associated with said meter comprises first collected data collected by said first collector from said meter;
wherein second collector data collected by the second collector from said meter is merged at the second collector with the first collected data, and wherein said first collected data and said second collected data comprise metering information representative of usage of a service or commodity.
2. The system of claim 1, further comprising updating a current network state database and a historical network state database to reflect that said meter has migrated from said first collector to said second collector.
3. The system of claim 1, wherein said information associated with said meter comprises configuration information.
4. The system of claim 3, wherein said configuration information is downloaded to said second collector to determine operational characteristics of said meter.
5. The system of claim 1, wherein said information is removed from said first collector after being downloaded to said second collector.
6. A method of managing meters in a wireless network, wherein the network comprises a first collector and a first plurality of meters that communicate wirelessly with said first collector, and a second collector and a second plurality of meters that communicate wirelessly with said second collector, wherein each of said first plurality of meters has a communication path to the first collector that is either direct or indirect through one or more intermediate meters in said first plurality of meters that serve as repeaters, and wherein each of said second plurality of meters has a communication path to the second collector that is either direct or indirect through one or more intermediate meters in said second plurality of meters that serve as repeaters, the wireless communication paths between each meter and a respective collector defining a layout of the network, the method comprising:
detecting that one of said first plurality of meters is no longer in communication with said first collector but is instead communicating with said second collector and thus has migrated from said first collector to said second collector and has become one of said second plurality of meters;
updating a network state;
retrieving information associated with said migrated meter from a global configuration database; and downloading said information to said second collector, wherein said information associated with said meter comprises first collected data collected by said first collector from said meter;
merging, at the second collector, second collector data collected by the second collector from said meter with the first collected data; and wherein said first collected data and said second collected data comprise metering information representative of usage of a service or commodity.
detecting that one of said first plurality of meters is no longer in communication with said first collector but is instead communicating with said second collector and thus has migrated from said first collector to said second collector and has become one of said second plurality of meters;
updating a network state;
retrieving information associated with said migrated meter from a global configuration database; and downloading said information to said second collector, wherein said information associated with said meter comprises first collected data collected by said first collector from said meter;
merging, at the second collector, second collector data collected by the second collector from said meter with the first collected data; and wherein said first collected data and said second collected data comprise metering information representative of usage of a service or commodity.
7. The method of claim 6, further comprising:
updating a current network state database and a historical network state database to reflect that said meter has migrated from said first collector to said second collector.
updating a current network state database and a historical network state database to reflect that said meter has migrated from said first collector to said second collector.
8. The method of claim 6 or claim 7, further comprising:
configuring said migrated meter in accordance with said information.
configuring said migrated meter in accordance with said information.
9. The method of claim 6, 7 or 8, further comprising:
removing said information from said first collector after being downloaded to said second collector.
removing said information from said first collector after being downloaded to said second collector.
10. A method for managing a spontaneous migration of a meter from a first collector to a second collector in a wireless network, wherein the first collector wirelessly communicates with a first plurality of meters, and the second collector communicates with a second plurality of meters, and wherein each of said first plurality of meters has a communication path to the first collector that is either direct or indirect through one or more intermediate meters in said first plurality of meters that serve as repeaters, and wherein each of said second plurality of meters has a communication path to the second collector that is either direct or indirect through one or more intermediate meters in said second plurality of meters that serve as repeaters, the wireless communication paths between each meter and a respective collector defining a layout of the network, the method comprising:
detecting said spontaneous migration of the meter from the first collector to the second collector;
retrieving configuration information and first collected data collected by the first collector from said meter;
contacting said second collector and downloading said configuration information and said first collected data to said second collector; and merging at said second collector said first collected data with second collected data collected by the second collector from said meter, wherein said first collected data and said second collected data comprise metering information representative of usage of a service or commodity.
detecting said spontaneous migration of the meter from the first collector to the second collector;
retrieving configuration information and first collected data collected by the first collector from said meter;
contacting said second collector and downloading said configuration information and said first collected data to said second collector; and merging at said second collector said first collected data with second collected data collected by the second collector from said meter, wherein said first collected data and said second collected data comprise metering information representative of usage of a service or commodity.
11. The method of claim 10, further comprising:
updating a current network state database and a historical network state database to reflect that said meter has migrated from said first collector to said second collector.
updating a current network state database and a historical network state database to reflect that said meter has migrated from said first collector to said second collector.
12. The method of claim 11, further comprising:
removing said information and said first collected data from said first collector.
removing said information and said first collected data from said first collector.
13. The method of claim 11 or 12, further comprising:
updating a data collection requirements server to reflect that said meter has migrated from said first collector to said second collector.
updating a data collection requirements server to reflect that said meter has migrated from said first collector to said second collector.
14. The method of claim 13, wherein data accessible to said data collection requirements server indicates what types of data said meter collects.
15. The method of any one of claims 10 to 14, wherein said configuration information determines operating characteristics of said meter.
Applications Claiming Priority (3)
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| US10/949,682 | 2004-09-24 | ||
| PCT/US2005/034400 WO2006036886A2 (en) | 2004-09-24 | 2005-09-23 | System for automated management of spontaneous node migration in a distributed fixed wireless network |
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| CA2581491A1 CA2581491A1 (en) | 2006-04-06 |
| CA2581491C true CA2581491C (en) | 2011-09-06 |
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| CA2581491A Expired - Fee Related CA2581491C (en) | 2004-09-24 | 2005-09-23 | System for automated management of spontaneous node migration in a distributed fixed wireless network |
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| AR (1) | AR051037A1 (en) |
| AU (1) | AU2005289647B2 (en) |
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| WO (1) | WO2006036886A2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7236908B2 (en) * | 2005-11-29 | 2007-06-26 | Elster Electricity, Llc | Fuzzy time-of-use metering and consumption monitoring using load profile data from relative time transmit-only devices |
| KR100785482B1 (en) * | 2006-12-14 | 2007-12-12 | 삼성전자주식회사 | Method and apparatus for discoverying component in at least one of sub-network |
| WO2010129691A2 (en) | 2009-05-07 | 2010-11-11 | Powell Phillip W | Voltage conservation using advanced metering infrastructure and substation centralized voltage control |
| US9582020B2 (en) | 2013-03-15 | 2017-02-28 | Dominion Resources, Inc. | Maximizing of energy delivery system compatibility with voltage optimization using AMI-based data control and analysis |
| US9563218B2 (en) | 2013-03-15 | 2017-02-07 | Dominion Resources, Inc. | Electric power system control with measurement of energy demand and energy efficiency using t-distributions |
| US9678520B2 (en) | 2013-03-15 | 2017-06-13 | Dominion Resources, Inc. | Electric power system control with planning of energy demand and energy efficiency using AMI-based data analysis |
| US9847639B2 (en) | 2013-03-15 | 2017-12-19 | Dominion Energy, Inc. | Electric power system control with measurement of energy demand and energy efficiency |
| US9553453B2 (en) | 2013-03-15 | 2017-01-24 | Dominion Resources, Inc. | Management of energy demand and energy efficiency savings from voltage optimization on electric power systems using AMI-based data analysis |
| WO2015139026A2 (en) | 2014-03-14 | 2015-09-17 | Go Tenna Inc. | System and method for digital communication between computing devices |
| US10732656B2 (en) | 2015-08-24 | 2020-08-04 | Dominion Energy, Inc. | Systems and methods for stabilizer control |
| US10944669B1 (en) | 2018-02-09 | 2021-03-09 | GoTenna, Inc. | System and method for efficient network-wide broadcast in a multi-hop wireless network using packet echos |
| EP3831021A1 (en) | 2018-07-27 | 2021-06-09 | Gotenna Inc. | VINEtm ZERO-CONTROL ROUTING USING DATA PACKET INSPECTION FOR WIRELESS MESH NETWORKS |
| EP3935882A4 (en) | 2019-03-08 | 2022-11-16 | Gotenna Inc. | Method for utilization-based traffic throttling in a wireless mesh network |
Family Cites Families (329)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4361890A (en) | 1958-06-17 | 1982-11-30 | Gte Products Corporation | Synchronizing system |
| US4066964A (en) | 1967-01-06 | 1978-01-03 | Rockwell International Corporation | Communication system |
| US3455815A (en) | 1967-07-13 | 1969-07-15 | Universal Oil Prod Co | Sorption process |
| JPS5325202B2 (en) | 1972-08-29 | 1978-07-25 | ||
| US3858212A (en) | 1972-08-29 | 1974-12-31 | L Tompkins | Multi-purpose information gathering and distribution system |
| DE2450727C1 (en) | 1974-10-25 | 1979-11-29 | Siemens Ag | Arrangement for information transfer |
| US4031513A (en) | 1974-11-08 | 1977-06-21 | Northern Illinois Gas Company | RF data exchange system |
| US3973240A (en) | 1974-12-05 | 1976-08-03 | General Electric Company | Power line access data system |
| US4056107A (en) | 1976-04-26 | 1977-11-01 | Sperry Rand Corporation | Crop residue deflector means |
| US4132981A (en) | 1976-10-21 | 1979-01-02 | Rockwell International Corporation | Self-powered system for measuring and storing consumption of utility meter |
| US4190800A (en) | 1976-11-22 | 1980-02-26 | Scientific-Atlanta, Inc. | Electrical load management system |
| US4204195A (en) | 1977-05-23 | 1980-05-20 | General Electric Company | Meter terminal unit for use in automatic remote meter reading and control system |
| US4218737A (en) | 1977-08-30 | 1980-08-19 | The United States Of America As Represented By The Secretary Of The Army | Revenue metering system for power companies |
| US4405829A (en) | 1977-12-14 | 1983-09-20 | Massachusetts Institute Of Technology | Cryptographic communications system and method |
| US4254472A (en) | 1978-08-14 | 1981-03-03 | The Valeron Corporation | Remote metering system |
| US4250489A (en) | 1978-10-31 | 1981-02-10 | Westinghouse Electric Corp. | Distribution network communication system having branch connected repeaters |
| US4860379A (en) | 1979-05-18 | 1989-08-22 | General Instrument Corporation | Data communications system |
| US4322842A (en) | 1979-10-23 | 1982-03-30 | Altran Electronics | Broadcast system for distribution automation and remote metering |
| US4361851A (en) | 1980-01-04 | 1982-11-30 | Asip William F | System for remote monitoring and data transmission over non-dedicated telephone lines |
| US4321582A (en) | 1980-03-11 | 1982-03-23 | Banghart Thomas S | Data retrieval system and method |
| US4396915A (en) | 1980-03-31 | 1983-08-02 | General Electric Company | Automatic meter reading and control system |
| US4328581A (en) | 1980-06-20 | 1982-05-04 | Rockwell International Corporation | Adaptive HF communication system |
| US4757456A (en) | 1981-05-19 | 1988-07-12 | Ralph Benghiat | Device and method for utility meter reading |
| US4415896A (en) | 1981-06-09 | 1983-11-15 | Adec, Inc. | Computer controlled energy monitoring system |
| US4707852A (en) | 1981-10-09 | 1987-11-17 | Systems And Support, Incorporated | Utility usage data and event data acquisition system |
| US4504831A (en) | 1981-10-09 | 1985-03-12 | Systems And Support, Incorporated | Utility usage data and event data acquisition system |
| US4466001A (en) | 1981-12-04 | 1984-08-14 | Motorola, Inc. | Polling system for multiple terminal units |
| DE3373052D1 (en) | 1982-04-07 | 1987-09-17 | Motorola Israel Ltd | Signal processing unit |
| JPS58207733A (en) | 1982-05-28 | 1983-12-03 | Nec Corp | Battery saving circuit |
| US4525861A (en) | 1982-11-12 | 1985-06-25 | Motorola, Inc. | Zoned data communications system for communicating message signals between portable radios and a host computer |
| US4608699A (en) | 1982-12-27 | 1986-08-26 | Motorola, Inc. | Simulcast transmission system |
| US4631538A (en) | 1983-02-28 | 1986-12-23 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Single frequency multitransmitter telemetry system |
| US4783748A (en) | 1983-12-09 | 1988-11-08 | Quadlogic Controls Corporation | Method and apparatus for remote measurement |
| US4617566A (en) | 1983-12-15 | 1986-10-14 | Teleplex Corporation | Addressable-port, daisy chain telemetry system with self-test capability |
| US4653076A (en) | 1984-03-23 | 1987-03-24 | Sangamo Weston, Inc. | Timing signal correction system for use in direct sequence spread signal receiver |
| GB2157448A (en) | 1984-04-10 | 1985-10-23 | Yu Chen | Watt-hour meter |
| US4728950A (en) | 1984-04-16 | 1988-03-01 | Telemeter Corporation | Magnetic sensor apparatus for remotely monitoring a utility meter or the like |
| US4600923A (en) | 1984-05-04 | 1986-07-15 | American Meter Company | Remote meter display unit |
| US4628313A (en) | 1984-09-12 | 1986-12-09 | Telemeter Corporation | Apparatus and method for remotely monitoring a utility meter by use of a liquid crystal display |
| US4672555A (en) | 1984-10-18 | 1987-06-09 | Massachusetts Institute Of Technology | Digital ac monitor |
| US4644321A (en) | 1984-10-22 | 1987-02-17 | Westinghouse Electric Corp. | Wireless power line communication apparatus |
| US4680704A (en) | 1984-12-28 | 1987-07-14 | Telemeter Corporation | Optical sensor apparatus and method for remotely monitoring a utility meter or the like |
| US4614945A (en) | 1985-02-20 | 1986-09-30 | Diversified Energies, Inc. | Automatic/remote RF instrument reading method and apparatus |
| US4769772A (en) | 1985-02-28 | 1988-09-06 | Honeywell Bull, Inc. | Automated query optimization method using both global and parallel local optimizations for materialization access planning for distributed databases |
| US4611333A (en) | 1985-04-01 | 1986-09-09 | Motorola, Inc. | Apparatus for despreading a spread spectrum signal produced by a linear feedback shift register (LFSR) |
| US4692761A (en) | 1985-06-21 | 1987-09-08 | Robinton Products, Inc. | Adaptive communication network and method |
| US4638298A (en) | 1985-07-16 | 1987-01-20 | Telautograph Corporation | Communication system having message repeating terminals |
| US4688038A (en) | 1985-09-30 | 1987-08-18 | Milton S. Gerstein | Remote meter-reader device for gas meters, and the like |
| US4724435A (en) | 1985-11-06 | 1988-02-09 | Applied Spectrum Technologies, Inc. | Bi-directional data telemetry system |
| US4804957A (en) | 1985-11-27 | 1989-02-14 | Triad Communications, Inc. | Utility meter and submetering system |
| US4713837A (en) | 1985-12-24 | 1987-12-15 | Alastair Gordon | Communication network |
| DE3642951A1 (en) | 1986-02-06 | 1987-08-20 | Notifier Co | DETECTOR SYSTEM, IN PARTICULAR SAFETY SYSTEM, AND METHOD FOR GENERATING A DISPLAY OF A CONDITION AT AT LEAST ONE REMOTE SITE |
| US4734680A (en) | 1986-02-06 | 1988-03-29 | Emhart Industries, Inc. | Detection system with randomized transmissions |
| US4833618A (en) | 1986-02-20 | 1989-05-23 | Net Laboratories, Inc. | System for automatically reading utility meters from a remote location |
| US4799059A (en) | 1986-03-14 | 1989-01-17 | Enscan, Inc. | Automatic/remote RF instrument monitoring system |
| CA1277033C (en) | 1986-04-30 | 1990-11-27 | Johann Sollinger | Automatic metering apparatus |
| US4749992B1 (en) | 1986-07-03 | 1996-06-11 | Total Energy Management Consul | Utility monitoring and control system |
| JPH07123232B2 (en) | 1986-08-06 | 1995-12-25 | 京セラ株式会社 | Synchronous tracking device for spread spectrum communication |
| US4827514A (en) | 1986-09-03 | 1989-05-02 | Motorola, Inc. | Method and apparatus to detect and recover a pseudo-random sequence |
| US4804938A (en) | 1986-10-24 | 1989-02-14 | Sangamo Weston, Inc. | Distribution energy management system |
| US4792946A (en) | 1987-04-07 | 1988-12-20 | Spectrum Electronics, Inc. | Wireless local area network for use in neighborhoods |
| GB2203920B (en) | 1987-04-23 | 1990-05-16 | Iberduero Sa | Telemetering system for electrical power consumed by various users |
| US4884021A (en) | 1987-04-24 | 1989-11-28 | Transdata, Inc. | Digital power metering |
| JP2624964B2 (en) | 1987-06-09 | 1997-06-25 | キヤノン株式会社 | Wireless communication device |
| DE3788348T2 (en) | 1987-07-31 | 1994-03-17 | Texas Instruments Deutschland | Transponder arrangement. |
| US4839645A (en) | 1987-08-06 | 1989-06-13 | Lill Thomas M | Weather data transmitting system |
| US4862493A (en) | 1987-12-28 | 1989-08-29 | General Electric Company | Electronic remote data recorder for electric energy metering |
| US5079715A (en) | 1987-12-28 | 1992-01-07 | Krishnan Venkataraman | Electronic data recorder for electric energy metering |
| US4940976A (en) | 1988-02-05 | 1990-07-10 | Utilicom Inc. | Automated remote water meter readout system |
| US4868877A (en) | 1988-02-12 | 1989-09-19 | Fischer Addison M | Public key/signature cryptosystem with enhanced digital signature certification |
| US4922518A (en) | 1988-04-29 | 1990-05-01 | Gordon Alastair T | Selective dissemination of information |
| US4972507A (en) | 1988-09-09 | 1990-11-20 | Cellular Data, Inc. | Radio data protocol communications system and method |
| US4912722A (en) | 1988-09-20 | 1990-03-27 | At&T Bell Laboratories | Self-synchronous spread spectrum transmitter/receiver |
| AU633283B2 (en) | 1988-10-15 | 1993-01-28 | Schlumberger Industries | A system for remote transfer and collection of data, particularly from meters |
| US4940974A (en) | 1988-11-01 | 1990-07-10 | Norand Corporation | Multiterminal communication system and method |
| US5067136A (en) | 1988-11-02 | 1991-11-19 | Axonn Corporation | Wireless alarm system |
| US4964138A (en) | 1988-11-15 | 1990-10-16 | Agilis Corporation | Differential correlator for spread spectrum communication system |
| US5086385A (en) | 1989-01-31 | 1992-02-04 | Custom Command Systems | Expandable home automation system |
| US5007052A (en) | 1989-04-11 | 1991-04-09 | Metricom, Inc. | Method for routing packets by squelched flooding |
| US5022046A (en) | 1989-04-14 | 1991-06-04 | The United States Of America As Represented By The Secretary Of The Air Force | Narrowband/wideband packet data communication system |
| US5428636A (en) | 1993-05-03 | 1995-06-27 | Norand Corporation | Radio frequency local area network |
| US5032833A (en) | 1989-04-27 | 1991-07-16 | Schlumberger Industries, Inc. | Adaptive network routing for power line communications |
| US5136614A (en) | 1989-05-08 | 1992-08-04 | Sanyo Electric Co., Ltd. | Spread spectrum communication system |
| GB8910997D0 (en) | 1989-05-12 | 1989-06-28 | Tunstall Telecom Ltd | Radio transmission system |
| US5160926A (en) | 1989-06-28 | 1992-11-03 | Schweitzer Engineering Laboratories, Inc. | Display transducer apparatus |
| US5280498A (en) | 1989-06-29 | 1994-01-18 | Symbol Technologies, Inc. | Packet data communication system |
| US5668803A (en) | 1989-06-29 | 1997-09-16 | Symbol Technologies, Inc. | Protocol for packet data communication system |
| US5115433A (en) | 1989-07-18 | 1992-05-19 | Metricom, Inc. | Method and system for routing packets in a packet communication network |
| US4939726A (en) | 1989-07-18 | 1990-07-03 | Metricom, Inc. | Method for routing packets in a packet communication network |
| US5142694A (en) | 1989-07-24 | 1992-08-25 | Motorola, Inc. | Reporting unit |
| US5166664A (en) | 1989-08-15 | 1992-11-24 | David Fish | Warning method and apparatus and parallel correlator particularly useful therein |
| US5090024A (en) | 1989-08-23 | 1992-02-18 | Intellon Corporation | Spread spectrum communications system for networks |
| US4965533A (en) | 1989-08-31 | 1990-10-23 | Qualcomm, Inc. | Direct digital synthesizer driven phase lock loop frequency synthesizer |
| JPH03108828A (en) | 1989-09-22 | 1991-05-09 | Clarion Co Ltd | Spread spectrum receiver |
| US5086292A (en) | 1989-10-31 | 1992-02-04 | Iris Systems Inc. | Tamper detection device for utility meter |
| JPH0779279B2 (en) | 1989-11-02 | 1995-08-23 | クラリオン株式会社 | Spread spectrum receiver |
| GB2237910A (en) | 1989-11-07 | 1991-05-15 | Atomic Energy Authority Uk | Telemetry transponder |
| GB2238147B (en) | 1989-11-16 | 1993-04-21 | Gen Electric Co Plc | Radio telemetry systems |
| CA2075048C (en) | 1990-01-30 | 1999-08-17 | Gregory A. Pascucci | Networked facilities management system |
| US5056107A (en) | 1990-02-15 | 1991-10-08 | Iris Systems Inc. | Radio communication network for remote data generating stations |
| US5553094A (en) | 1990-02-15 | 1996-09-03 | Iris Systems, Inc. | Radio communication network for remote data generating stations |
| US5673252A (en) | 1990-02-15 | 1997-09-30 | Itron, Inc. | Communications protocol for remote data generating stations |
| US5228029A (en) | 1990-02-27 | 1993-07-13 | Motorola, Inc. | Cellular tdm communication system employing offset frame synchronization |
| JP2675890B2 (en) | 1990-03-06 | 1997-11-12 | キヤノン株式会社 | Spread spectrum communication equipment |
| US5225994A (en) | 1990-03-06 | 1993-07-06 | Mitsubishi Denki Kabushiki Kaisha | Control and supervisory system for power distribution equipment |
| NL9000606A (en) | 1990-03-16 | 1991-10-16 | Ericsson Radio Systems Bv | SYSTEM FOR THE TRANSMISSION OF ALARM SIGNALS. |
| US5018165A (en) | 1990-03-21 | 1991-05-21 | Andrew Corporation | Communication system using spread spectrum and leaky transmission line |
| US5079768A (en) | 1990-03-23 | 1992-01-07 | Metricom, Inc. | Method for frequency sharing in frequency hopping communications network |
| US5130987A (en) | 1990-03-23 | 1992-07-14 | Metricom, Inc. | Method for synchronizing a wide area network without global synchronizing |
| TW226047B (en) | 1990-03-27 | 1994-07-01 | Ibm | |
| US5151866A (en) | 1990-03-30 | 1992-09-29 | The Dow Chemical Company | High speed power analyzer |
| US5155481A (en) | 1990-05-25 | 1992-10-13 | Schlumberger Industries, Inc. | Two and three wire utility data communications system |
| US5252967A (en) | 1990-05-25 | 1993-10-12 | Schlumberger Industries, Inc. | Reader/programmer for two and three wire utility data communications system |
| US5243338A (en) | 1990-05-25 | 1993-09-07 | Schlumberger Industries, Inc. | Two and three wire utility data communications system |
| DE69128304T2 (en) | 1990-06-04 | 1998-06-18 | Canarias Union Electrica | Autonomous system for reading and recording pulses |
| JPH0777361B2 (en) | 1990-07-04 | 1995-08-16 | クラリオン株式会社 | Spread spectrum receiver |
| US5189694A (en) | 1990-08-31 | 1993-02-23 | At&T Bell Laboratories | Telemetry access arrangement |
| US5287287A (en) | 1990-09-14 | 1994-02-15 | Energy Audit Corporation | Power consumption rate display device |
| US5311542A (en) | 1990-09-19 | 1994-05-10 | Honeywell Inc. | Spread spectrum communication system |
| WO1992007434A1 (en) | 1990-10-23 | 1992-04-30 | Omnipoint Corporation | Method and apparatus for establishing spread spectrum communications |
| US5214587A (en) | 1990-11-28 | 1993-05-25 | Green Richard G | Device for monitoring utility usage |
| GB2266642B (en) | 1991-01-03 | 1995-08-16 | Sasktel | Data collection network apparatus and method |
| JPH04256238A (en) | 1991-02-07 | 1992-09-10 | Clarion Co Ltd | Spectrum diffusion modulation device |
| US5179376A (en) | 1991-02-28 | 1993-01-12 | Systems Analysis And Integration, Inc. | Substation load distribution monitor system |
| US5229996A (en) | 1991-02-28 | 1993-07-20 | Telefonaktiebolaget L M Ericsson | Split-window time alignment |
| JPH04290593A (en) | 1991-03-15 | 1992-10-15 | Kazuo Takahashi | Production of mineral water containing ore |
| DE4111999A1 (en) | 1991-04-12 | 1992-10-15 | Hartmut Koellner | CONVERTER CONTROL |
| US5289497A (en) | 1991-05-23 | 1994-02-22 | Interdigital Technology Corporation | Broadcast synchronized communication system |
| US5285469A (en) | 1991-06-03 | 1994-02-08 | Omnipoint Data Corporation | Spread spectrum wireless telephone system |
| US5239575A (en) | 1991-07-09 | 1993-08-24 | Schlumberger Industries, Inc. | Telephone dial-inbound data acquisition system with demand reading capability |
| GB2272614B (en) | 1991-07-19 | 1995-06-07 | Iris Systems Inc | Wide area communications network for remote data generating stations |
| US5384712A (en) | 1991-08-15 | 1995-01-24 | Eaton Corporation | Energy monitoring system for a plurality of local stations with snapshot polling from a central station |
| US5315531A (en) | 1991-08-15 | 1994-05-24 | Westinghouse Electric Corp. | Energy monitoring system for a plurality of local stations with snapshot polling from a central station |
| GB9118030D0 (en) | 1991-08-21 | 1991-10-09 | Disys Inc | Data gathering system |
| EP0606396B1 (en) | 1991-10-01 | 2002-06-12 | Norand Corporation | A radio frequency local area network |
| US5748619A (en) | 1991-10-01 | 1998-05-05 | Meier; Robert C. | Communication network providing wireless and hard-wired dynamic routing |
| US5280499A (en) | 1991-10-18 | 1994-01-18 | Ricoh Company, Ltd. | Spread spectrum communication system |
| FR2682835B1 (en) | 1991-10-22 | 1993-12-10 | Schlumberger Industries Sa | METHOD FOR SYNCHRONIZING TWO SIGNALS. |
| GB2262862B (en) | 1991-12-23 | 1996-05-22 | Motorola Israel Ltd | Method and apparatus for contending for access to a communication channel |
| US5239584A (en) | 1991-12-26 | 1993-08-24 | General Electric Corporation | Method and apparatus for encryption/authentication of data in energy metering applications |
| GB2263989B (en) | 1992-02-01 | 1995-05-31 | Motorola Israel Ltd | Supervisory control and data acquisition system |
| US5475867A (en) | 1992-02-06 | 1995-12-12 | Itron, Inc. | Distributed supervisory control and data acquisition system |
| MX9206230A (en) | 1992-02-21 | 1993-09-01 | Abb Power T & D Co | IMPROVEMENTS IN AN ELECTRICAL ACTIVITY METER AND METHODS FOR THE USE OF THE SAME. |
| US5457621A (en) | 1992-02-21 | 1995-10-10 | Abb Power T&D Company Inc. | Switching power supply having voltage blocking clamp |
| US5544036A (en) | 1992-03-25 | 1996-08-06 | Brown, Jr.; Robert J. | Energy management and home automation system |
| CA2091851A1 (en) | 1992-03-25 | 1993-09-26 | Michael J. Sherman | Link layered communications network and method |
| US5974236A (en) | 1992-03-25 | 1999-10-26 | Aes Corporation | Dynamically reconfigurable communications network and method |
| FR2689715B1 (en) | 1992-04-03 | 1997-03-21 | Euro Cp | SYSTEM FOR REMOTE COLLECTION OF DATA, PROCESS IMPLEMENTED IN THIS SYSTEM, AND ASSOCIATED COLLECTION DEVICE |
| US5307349A (en) | 1992-04-07 | 1994-04-26 | Hughes Aircraft Company | TDMA network and protocol for reader-transponder communications and method |
| CH682196A5 (en) | 1992-05-05 | 1993-07-30 | Landis & Gyr Business Support | Transmitting information for remote reading of electricity meter - using common carrier frequency along power line with each meter station reducing its set credit value at each transmission |
| US5668828A (en) | 1992-05-08 | 1997-09-16 | Sanconix, Inc. | Enhanced frequency agile radio |
| AU4393693A (en) | 1992-05-08 | 1994-12-20 | Axonn Corporation | A frequency agile radio |
| US5311541A (en) | 1992-05-08 | 1994-05-10 | Axonn Corporation | Frequency agile radio |
| US5381462A (en) | 1992-05-29 | 1995-01-10 | Datran Systems Corporation | Utility monitor communications systems |
| US5260943A (en) | 1992-06-16 | 1993-11-09 | Motorola, Inc. | TDM hand-off technique using time differences |
| US5473322A (en) | 1992-07-24 | 1995-12-05 | Schlumberger Industries, Inc. | Apparatus and method for sensing tampering with a utility meter |
| US5430759A (en) | 1992-08-20 | 1995-07-04 | Nexus 1994 Limited | Low-power frequency-hopped spread spectrum reverse paging system |
| JP2561232B2 (en) | 1992-08-31 | 1996-12-04 | 双葉電子工業株式会社 | Spectrum spread receiver and spectrum spread transmitter / receiver using this device |
| IT1257167B (en) | 1992-10-27 | 1996-01-05 | METHOD FOR IMPROVING THE MANAGEMENT OF DISTRIBUTION NETWORKS, IN PARTICULAR OF GAS, WATER, ELECTRICITY, HEAT. | |
| US5345225A (en) | 1992-10-30 | 1994-09-06 | Scientific-Atlanta, Inc. | Tamper detection system for load management device |
| US5450088A (en) | 1992-11-25 | 1995-09-12 | Texas Instruments Deutschland Gmbh | Transponder arrangement |
| US5319679A (en) | 1992-12-09 | 1994-06-07 | Datum Systems | Method and apparatus for recovering data from a radio signal |
| EP0604777A1 (en) | 1992-12-28 | 1994-07-06 | Motorola, Inc. | Data transmission device system and method |
| SE9300681D0 (en) | 1993-03-01 | 1993-03-01 | Ericsson Telefon Ab L M | A METHOD AND APPARATUS FOR HANDING OFF A MOBILE STATION FROM A FIRST TO A SECOND CHANNEL IN A MOBILE COMMUNICATION SYSTEM |
| US5499243A (en) | 1993-01-22 | 1996-03-12 | Hall; Dennis R. | Method and apparatus for coordinating transfer of information between a base station and a plurality of radios |
| JPH06224879A (en) | 1993-01-22 | 1994-08-12 | Mitsui Mining & Smelting Co Ltd | Transmitter for spread spectrum communication and lsi for the same |
| US5406495A (en) | 1993-02-01 | 1995-04-11 | Systems Analysis And Integration, Inc. | Substation load distribution monitor system |
| AU681384B2 (en) | 1993-02-12 | 1997-08-28 | Ekstrom Industries, Inc. | Remote automatic meter reading apparatus |
| US5329547A (en) | 1993-03-11 | 1994-07-12 | Motorola, Inc. | Method and apparatus for coherent communication in a spread-spectrum communication system |
| US5448570A (en) | 1993-03-17 | 1995-09-05 | Kyocera Corporation | System for mutual synchronization and monitoring between base stations |
| US5539775A (en) | 1993-03-17 | 1996-07-23 | Micron Technology, Inc. | Modulated spread spectrum in RF identification systems method |
| US5491473A (en) | 1993-03-31 | 1996-02-13 | Euro Cp S.A.R.L. | System for remote data collecting, method implemented in this system and data collector device |
| US5696903A (en) | 1993-05-11 | 1997-12-09 | Norand Corporation | Hierarchical communications system using microlink, data rate switching, frequency hopping and vehicular local area networking |
| GB2278699B (en) | 1993-05-17 | 1997-09-24 | Logica Uk Ltd | Domestic meter |
| US5438329A (en) | 1993-06-04 | 1995-08-01 | M & Fc Holding Company, Inc. | Duplex bi-directional multi-mode remote instrument reading and telemetry system |
| US5448230A (en) | 1993-06-25 | 1995-09-05 | Metscan, Incorporated | Remote data acquisition and communication system |
| US5546424A (en) | 1993-06-30 | 1996-08-13 | Casio Computer Co., Ltd. | Spread spectrum communication system |
| US5526389A (en) | 1993-07-16 | 1996-06-11 | Senses Data Communicaion | Spread spectrum open loop data recovery processor |
| US5528507A (en) | 1993-08-11 | 1996-06-18 | First Pacific Networks | System for utility demand monitoring and control using a distribution network |
| US5594740A (en) | 1993-08-27 | 1997-01-14 | Axion Logistics Corporation | Wireless communications application specific enabling method and apparatus |
| US5617084A (en) | 1993-09-10 | 1997-04-01 | Sears; Lawrence M. | Apparatus for communicating utility usage-related information from a utility usage location to a utility usage registering device |
| KR960003847B1 (en) | 1993-09-18 | 1996-03-22 | 삼성전자주식회사 | Spread spectrum modulation and demodulation |
| US5455544A (en) | 1994-01-28 | 1995-10-03 | Thomson Consumer Electronics, Inc. | Low power consumption binary phase-shift-keyed (BPSK) modulator using reflective electronic switching techniques |
| US5485455A (en) | 1994-01-28 | 1996-01-16 | Cabletron Systems, Inc. | Network having secure fast packet switching and guaranteed quality of service |
| US5574657A (en) | 1994-02-08 | 1996-11-12 | Micro-Trak Systems, Inc. | Electronic rate meter controller and method |
| US5463657A (en) | 1994-02-15 | 1995-10-31 | Lockheed Missiles & Space Company, Inc. | Detection of a multi-sequence spread spectrum signal |
| WO1995024027A1 (en) | 1994-03-04 | 1995-09-08 | Motorola Inc. | Remote meter reading power reduction method |
| US5457713A (en) | 1994-03-07 | 1995-10-10 | Sanconix, Inc. | Spread spectrum alignment repositioning method |
| US5493287A (en) | 1994-03-07 | 1996-02-20 | Motorola, Inc. | Method of remotely reading a group of meters |
| US5636216A (en) | 1994-04-08 | 1997-06-03 | Metricom, Inc. | Method for translating internet protocol addresses to other distributed network addressing schemes |
| US5488608A (en) | 1994-04-14 | 1996-01-30 | Metricom, Inc. | Method and system for routing packets in a packet communication network using locally constructed routing tables |
| US5461558A (en) | 1994-04-18 | 1995-10-24 | Motorola, Inc. | Method and apparatus having time dependent sleep modes |
| US5528597A (en) | 1994-04-18 | 1996-06-18 | At&T Corp. | Autonomous synchronization of base stations in a digital wireless radiotelephone network |
| US5481259A (en) | 1994-05-02 | 1996-01-02 | Motorola, Inc. | Method for reading a plurality of remote meters |
| US5926103A (en) | 1994-05-16 | 1999-07-20 | Petite; T. David | Personalized security system |
| US5714931A (en) | 1994-05-16 | 1998-02-03 | Petite; Thomas D. | Personalized security system |
| CA2190836C (en) | 1994-05-23 | 2004-04-06 | Dennis F. Johnson | Communications protocol for remote data generating stations |
| US5539828A (en) | 1994-05-31 | 1996-07-23 | Intel Corporation | Apparatus and method for providing secured communications |
| US5619192A (en) | 1994-06-14 | 1997-04-08 | Logicon, Inc. | Apparatus and method for reading utility meters |
| US5691715A (en) | 1994-06-22 | 1997-11-25 | General Electric Company | Method and apparatus for detecting fraudulent power line communications signal |
| US5570084A (en) | 1994-06-28 | 1996-10-29 | Metricom, Inc. | Method of loose source routing over disparate network types in a packet communication network |
| US5495239A (en) | 1994-08-02 | 1996-02-27 | General Electric Company | Method and apparatus for communicating with a plurality of electrical metering devices and a system control center with a mobile node |
| US5696501A (en) | 1994-08-02 | 1997-12-09 | General Electric Company | Method and apparatus for performing the register functions for a plurality of metering devices at a common node |
| JPH0897821A (en) | 1994-09-21 | 1996-04-12 | Hitachi Ltd | Method and equipment for radio data communication and system therefor |
| US6073174A (en) | 1994-09-27 | 2000-06-06 | Bristish Telecommunications | Remote access systems |
| US5602744A (en) | 1994-09-29 | 1997-02-11 | Meek; Jean L. | Universal send/receive utility usage data gathering system |
| DE69526099T2 (en) | 1994-09-30 | 2002-10-31 | Siemens Energy & Automat | An AC load control device having a graphic display |
| US5524280A (en) | 1994-10-31 | 1996-06-04 | Motorola, Inc. | Method of acquiring a channel in a general frequency reuse system |
| US5619685A (en) | 1994-11-04 | 1997-04-08 | Ball Corporation | Run-time dynamically adaptive computer process for facilitating communication between computer programs |
| US5745901A (en) | 1994-11-08 | 1998-04-28 | Kodak Limited | Workflow initiated by graphical symbols |
| US5541589A (en) | 1994-12-15 | 1996-07-30 | Delaney; Patrick J. | Power meter data acquisition and control system |
| US5525898A (en) | 1994-12-16 | 1996-06-11 | General Electric Company | Programmable multi-channel load profile recorder and method of recording electrical energy metering quantities therein |
| US5592470A (en) | 1994-12-21 | 1997-01-07 | At&T | Broadband wireless system and network architecture providing broadband/narrowband service with optimal static and dynamic bandwidth/channel allocation |
| US5744657A (en) * | 1994-12-22 | 1998-04-28 | E. I. Du Pont De Nemours And Company | Process for the preparation of perfluorocarbons |
| US5572438A (en) | 1995-01-05 | 1996-11-05 | Teco Energy Management Services | Engery management and building automation system |
| JP3409934B2 (en) | 1995-01-13 | 2003-05-26 | 東京瓦斯株式会社 | Wireless automatic meter reading system |
| US5659300A (en) | 1995-01-30 | 1997-08-19 | Innovatec Corporation | Meter for measuring volumetric consumption of a commodity |
| US5692180A (en) | 1995-01-31 | 1997-11-25 | International Business Machines Corporation | Object-oriented cell directory database for a distributed computing environment |
| IL117221A0 (en) | 1995-02-28 | 1996-06-18 | Gen Instrument Corp | Configurable hybrid medium access control for cable metropolitan area networks |
| US5727004A (en) | 1995-03-14 | 1998-03-10 | Adaptive Networks, Inc. | Method and apparatus for data encoding and communication over noisy media |
| US5684799A (en) | 1995-03-28 | 1997-11-04 | Bell Atlantic Network Services, Inc. | Full service network having distributed architecture |
| US5519388A (en) | 1995-04-20 | 1996-05-21 | Schlumberger Industries, Inc. | Method and apparatus for active temperature compensation in a radiowave transmitter |
| US5717604A (en) | 1995-05-25 | 1998-02-10 | Wiggins; Christopher | Network monitoring system for tracking, billing and recovering licenses |
| US5627759A (en) | 1995-05-31 | 1997-05-06 | Process Systems, Inc. | Electrical energy meters having real-time power quality measurement and reporting capability |
| US5757783A (en) | 1995-06-15 | 1998-05-26 | Lucent Technologies Inc. | Method and apparatus for routing ATM cells in an AD-ATM LAN |
| US5559870A (en) | 1995-06-30 | 1996-09-24 | Scientific-Atlanta, Inc. | Method and apparatus for providing information to a subscriber over an electronic network |
| US6208266B1 (en) | 1995-08-23 | 2001-03-27 | Scientific Telemetry Corporation | Remote data acquisition and processing system |
| US5953319A (en) | 1995-09-29 | 1999-09-14 | Amsc Subsidiary Corporation | Wide area mobile communication networks with multiple routing mode options |
| US5751914A (en) | 1995-10-10 | 1998-05-12 | International Business Machines Corporation | Method and system for correlating a plurality of events within a data processing system |
| CA2162188C (en) | 1995-11-06 | 1999-05-25 | Harold Jeffrey Gartner | Location transparency of distributed objects over multiple middlewares |
| US5790809A (en) | 1995-11-17 | 1998-08-04 | Mci Corporation | Registry communications middleware |
| US5715390A (en) | 1995-11-30 | 1998-02-03 | General Electric Company | Method and apparatus for providing upgrades in electricity meters |
| US5699276A (en) | 1995-12-15 | 1997-12-16 | Roos; Charles E. | Utility meter providing an interface between a digital network and home electronics |
| GB2308949B (en) | 1996-01-08 | 1999-11-10 | Ramar Technology Ltd | Remote meter reading system |
| JP4145965B2 (en) | 1996-01-10 | 2008-09-03 | 沖電気工業株式会社 | Mobile communication system |
| US5732078A (en) | 1996-01-16 | 1998-03-24 | Bell Communications Research, Inc. | On-demand guaranteed bandwidth service for internet access points using supplemental user-allocatable bandwidth network |
| GB2309358B (en) | 1996-01-19 | 2000-04-12 | Nokia Mobile Phones Ltd | Radio telephone channel selection |
| US5751961A (en) | 1996-01-31 | 1998-05-12 | Bell Communications Research, Inc. | Integrated internet system for translating logical addresses of internet documents to physical addresses using integrated service control point |
| US6195018B1 (en) | 1996-02-07 | 2001-02-27 | Cellnet Data Systems, Inc. | Metering system |
| US6160993A (en) | 1996-02-23 | 2000-12-12 | Scientific-Atlanta, Inc. | Method and apparatus for command and control of remote systems using low earth orbit satellite communications |
| US5754772A (en) | 1996-03-26 | 1998-05-19 | Unisys Corporation | Transaction service independent HTTP server-to-transaction gateway |
| US5850187A (en) | 1996-03-27 | 1998-12-15 | Amtech Corporation | Integrated electronic tag reader and wireless communication link |
| US6078251A (en) | 1996-03-27 | 2000-06-20 | Intermec Ip Corporation | Integrated multi-meter and wireless communication link |
| US5754830A (en) | 1996-04-01 | 1998-05-19 | Openconnect Systems, Incorporated | Server and web browser terminal emulator for persistent connection to a legacy host system and method of operation |
| US5862391A (en) | 1996-04-03 | 1999-01-19 | General Electric Company | Power management control system |
| US5768148A (en) | 1996-04-03 | 1998-06-16 | General Electric Company | Man machine interface for power management control systems |
| US5910799A (en) | 1996-04-09 | 1999-06-08 | International Business Machines Corporation | Location motion sensitive user interface |
| US5884184A (en) | 1996-05-01 | 1999-03-16 | Sheffer; Eliezer Arie | Supervised cellular reporting network |
| US5778368A (en) | 1996-05-03 | 1998-07-07 | Telogy Networks, Inc. | Real-time embedded software respository with attribute searching apparatus and method |
| US5684472A (en) | 1996-05-08 | 1997-11-04 | Motorola, Inc. | Method and apparatus for remotely accessing meter status information in a meter reading system |
| US5719564A (en) | 1996-05-10 | 1998-02-17 | Sears; Lawrence M. | Utility meter reading system |
| US5801643A (en) | 1996-06-20 | 1998-09-01 | Northrop Grumman Corporation | Remote utility meter reading system |
| US5892758A (en) | 1996-07-11 | 1999-04-06 | Qualcomm Incorporated | Concentrated subscriber wireless remote telemetry system |
| US5748104A (en) | 1996-07-11 | 1998-05-05 | Qualcomm Incorporated | Wireless remote telemetry system |
| JP2915851B2 (en) | 1996-07-18 | 1999-07-05 | 宇宙開発事業団 | Time synchronous communication system |
| US5790789A (en) | 1996-08-02 | 1998-08-04 | Suarez; Larry | Method and architecture for the creation, control and deployment of services within a distributed computer environment |
| US5907491A (en) | 1996-08-23 | 1999-05-25 | Csi Technology, Inc. | Wireless machine monitoring and communication system |
| US6246677B1 (en) | 1996-09-06 | 2001-06-12 | Innovatec Communications, Llc | Automatic meter reading data communication system |
| US5960074A (en) | 1996-09-23 | 1999-09-28 | Curtis Clark | Mobile tele-computer network for motion picture, television and tv advertising production |
| US6078785A (en) | 1996-10-15 | 2000-06-20 | Bush; E. William | Demand reporting of electricity consumption by radio in relays to a base station, and demand relays wattmeters so reporting over a wide area |
| US6150955A (en) | 1996-10-28 | 2000-11-21 | Tracy Corporation Ii | Apparatus and method for transmitting data via a digital control channel of a digital wireless network |
| US5787437A (en) | 1996-10-29 | 1998-07-28 | Hewlett-Packard Company | Method and apparatus for shared management information via a common repository |
| US6421731B1 (en) | 1996-10-29 | 2002-07-16 | Telxon Corporation | Dynamic next hop routing protocol |
| US5958018A (en) | 1996-10-30 | 1999-09-28 | Lucent Technologies Inc. | Wireless services data network translating mac address to asynchronous transfer mode (ATM) address |
| US5896382A (en) | 1996-11-19 | 1999-04-20 | Scientific-Atlanta, Inc. | Method and apparatus for communicating information between a headend and subscriber over a wide area network |
| US5809059A (en) | 1996-11-21 | 1998-09-15 | Motorola, Inc. | Method and apparatus for spread spectrum channel assignment |
| US6044062A (en) | 1996-12-06 | 2000-03-28 | Communique, Llc | Wireless network system and method for providing same |
| US5883886A (en) * | 1997-01-03 | 1999-03-16 | Motorola, Inc. | Utility meter readings on a reverse channel of a two-way paging system |
| US5943375A (en) | 1997-02-06 | 1999-08-24 | At&T Wireless Services Inc. | Method to indicate synchronization lock of a remote station with a base station |
| AR011440A1 (en) | 1997-02-12 | 2000-08-16 | Abb Power T & D Co | ELECTRONIC MEASUREMENT PROVISION |
| US6430268B1 (en) | 1997-09-20 | 2002-08-06 | Statsignal Systems, Inc. | Systems for requesting service of a vending machine |
| US6233327B1 (en) | 1997-02-14 | 2001-05-15 | Statsignal Systems, Inc. | Multi-function general purpose transceiver |
| US5926531A (en) | 1997-02-14 | 1999-07-20 | Statsignal Systems, Inc. | Transmitter for accessing pay-type telephones |
| US6128276A (en) | 1997-02-24 | 2000-10-03 | Radix Wireless, Inc. | Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays |
| US5897607A (en) | 1997-02-28 | 1999-04-27 | Jenney Systems Associates, Ltd. | Automatic meter reading system |
| US6067029A (en) | 1997-03-04 | 2000-05-23 | Durston; Tom | Power check meter |
| US5898387A (en) | 1997-03-26 | 1999-04-27 | Scientific-Atlanta, Inc. | Modular meter based utility gateway enclosure |
| US6073169A (en) | 1997-04-08 | 2000-06-06 | Abb Power T&D Company Inc. | Automatic meter reading system employing common broadcast command channel |
| US6061604A (en) | 1997-05-06 | 2000-05-09 | Gas Research Institute | RF base repeater for automated residence management system |
| US6000034A (en) | 1997-05-06 | 1999-12-07 | Power Measurement Ltd. | Security system and method for revenue class electricity meter |
| US6112192A (en) | 1997-05-09 | 2000-08-29 | International Business Machines Corp. | Method for providing individually customized content in a network |
| JPH1141141A (en) | 1997-05-21 | 1999-02-12 | Mitsubishi Electric Corp | Spread spectrum signal receiving method and device therefor |
| US5874903A (en) | 1997-06-06 | 1999-02-23 | Abb Power T & D Company Inc. | RF repeater for automatic meter reading system |
| US5923269A (en) | 1997-06-06 | 1999-07-13 | Abb Power T&D Company Inc. | Energy meter with multiple protocols for communication with local and wide area networks |
| US5914672A (en) | 1997-06-13 | 1999-06-22 | Whisper Communications Incorporated | System for field installation of a remote meter interface |
| US6034988A (en) | 1997-08-04 | 2000-03-07 | Intellon Corporation | Spread spectrum apparatus and method for network RF data communications having extended communication channels |
| US6088659A (en) | 1997-09-11 | 2000-07-11 | Abb Power T&D Company Inc. | Automated meter reading system |
| US6199068B1 (en) | 1997-09-11 | 2001-03-06 | Abb Power T&D Company Inc. | Mapping interface for a distributed server to translate between dissimilar file formats |
| AU9480798A (en) | 1997-09-12 | 1999-03-29 | Williams Wireless, Inc. | Wide area remote telemetry |
| US5872774A (en) | 1997-09-19 | 1999-02-16 | Qualcomm Incorporated | Mobile station assisted timing synchronization in a CDMA communication system |
| US6091758A (en) | 1997-10-01 | 2000-07-18 | Lucent Technologies Inc. | Cordless telephone arranged for operating with multiple portable units in a frequency hopping system |
| US5986574A (en) | 1997-10-16 | 1999-11-16 | Peco Energy Company | System and method for communication between remote locations |
| US6078909A (en) | 1997-11-19 | 2000-06-20 | International Business Machines Corporation | Method and apparatus for licensing computer programs using a DSA signature |
| WO1999045510A2 (en) * | 1998-03-03 | 1999-09-10 | Itron, Inc. | Method and system for reading intelligent utility meters |
| US6100817A (en) | 1998-03-17 | 2000-08-08 | Abb Power T&D Company Inc. | Fixed network RF communications complaint with CEBus protocol |
| US5960807A (en) | 1998-05-05 | 1999-10-05 | Reyman; Mark | Vibration and flow actuated valve shutoff system |
| US6218953B1 (en) | 1998-10-14 | 2001-04-17 | Statsignal Systems, Inc. | System and method for monitoring the light level around an ATM |
| US6914533B2 (en) | 1998-06-22 | 2005-07-05 | Statsignal Ipc Llc | System and method for accessing residential monitoring devices |
| US6437692B1 (en) | 1998-06-22 | 2002-08-20 | Statsignal Systems, Inc. | System and method for monitoring and controlling remote devices |
| US6028522A (en) | 1998-10-14 | 2000-02-22 | Statsignal Systems, Inc. | System for monitoring the light level around an ATM |
| US6327541B1 (en) * | 1998-06-30 | 2001-12-04 | Ameren Corporation | Electronic energy management system |
| US20020013679A1 (en) | 1998-10-14 | 2002-01-31 | Petite Thomas D. | System and method for monitoring the light level in a lighted area |
| US7103511B2 (en) | 1998-10-14 | 2006-09-05 | Statsignal Ipc, Llc | Wireless communication networks for providing remote monitoring of devices |
| JP3467192B2 (en) | 1998-11-06 | 2003-11-17 | 株式会社 岩崎 | Perforator |
| CA2354581C (en) | 1998-12-07 | 2005-02-08 | Abb Automation, Inc. | Architecture layer interfacing devices and applications |
| US7650425B2 (en) | 1999-03-18 | 2010-01-19 | Sipco, Llc | System and method for controlling communication between a host computer and communication devices associated with remote devices in an automated monitoring system |
| US7263073B2 (en) | 1999-03-18 | 2007-08-28 | Statsignal Ipc, Llc | Systems and methods for enabling a mobile user to notify an automated monitoring system of an emergency situation |
| US6643278B1 (en) | 1999-03-23 | 2003-11-04 | Texas Instruments Incorporated | Wireless network circuits, systems, and methods for frequency hopping with reduced packet interference |
| US6446192B1 (en) | 1999-06-04 | 2002-09-03 | Embrace Networks, Inc. | Remote monitoring and control of equipment over computer networks using a single web interfacing chip |
| GB9918348D0 (en) | 1999-08-05 | 1999-10-06 | Koninkl Philips Electronics Nv | Location finding system and method |
| JP4148605B2 (en) * | 1999-08-06 | 2008-09-10 | 富士通株式会社 | Network system and server |
| US7379981B2 (en) | 2000-01-31 | 2008-05-27 | Kenneth W. Garrard | Wireless communication enabled meter and network |
| US7146636B2 (en) * | 2000-07-24 | 2006-12-05 | Bluesocket, Inc. | Method and system for enabling centralized control of wireless local area networks |
| US6836737B2 (en) | 2000-08-09 | 2004-12-28 | Statsignal Systems, Inc. | Systems and methods for providing remote monitoring of consumption for a utility meter |
| US20020031101A1 (en) | 2000-11-01 | 2002-03-14 | Petite Thomas D. | System and methods for interconnecting remote devices in an automated monitoring system |
| US6946972B2 (en) | 2001-01-25 | 2005-09-20 | Smartsynch, Inc. | Systems and methods for wirelessly transmitting data from a utility meter |
| US6751563B2 (en) | 2001-05-11 | 2004-06-15 | Electro Industries/Gauge Tech | Electronic power meter |
| US20020169643A1 (en) | 2001-05-11 | 2002-11-14 | Statsignal Systems, Inc. | System and method for remotely processing reservations |
| US7061924B1 (en) * | 2001-05-24 | 2006-06-13 | Intel Corporation | Methods and apparatus for remote metering |
| US20030036810A1 (en) | 2001-08-15 | 2003-02-20 | Petite Thomas D. | System and method for controlling generation over an integrated wireless network |
| US6671586B2 (en) | 2001-08-15 | 2003-12-30 | Statsignal Systems, Inc. | System and method for controlling power demand over an integrated wireless network |
| US20030123442A1 (en) | 2001-12-27 | 2003-07-03 | Drucker Benjamin T. | Distributed usage metering of multiple networked devices |
| US20030193952A1 (en) * | 2002-02-04 | 2003-10-16 | O'neill Alan | Mobile node handoff methods and apparatus |
| US6867707B1 (en) | 2002-04-24 | 2005-03-15 | Elster Electricity, Llc | Automated on-site meter registration confirmation using a portable, wireless computing device |
| US6754192B2 (en) | 2002-04-29 | 2004-06-22 | Harris Corporation | Temporal transition network protocol (TTNP) in a mobile ad hoc network |
| US7119713B2 (en) | 2002-06-27 | 2006-10-10 | Elster Electricity, Llc | Dynamic self-configuring metering network |
| US20040113810A1 (en) | 2002-06-28 | 2004-06-17 | Mason Robert T. | Data collector for an automated meter reading system |
| US7304587B2 (en) | 2003-02-14 | 2007-12-04 | Energy Technology Group, Inc. | Automated meter reading system, communication and control network for automated meter reading, meter data collector program product, and associated methods |
| US7209049B2 (en) | 2004-02-19 | 2007-04-24 | Itron, Inc. | Distributed meter reading terminal |
-
2004
- 2004-09-24 US US10/949,682 patent/US7742430B2/en not_active Expired - Fee Related
-
2005
- 2005-09-23 WO PCT/US2005/034400 patent/WO2006036886A2/en active Application Filing
- 2005-09-23 MX MX2007003517A patent/MX2007003517A/en active IP Right Grant
- 2005-09-23 NZ NZ554166A patent/NZ554166A/en not_active IP Right Cessation
- 2005-09-23 AU AU2005289647A patent/AU2005289647B2/en not_active Ceased
- 2005-09-23 CA CA2581491A patent/CA2581491C/en not_active Expired - Fee Related
- 2005-09-26 AR ARP050104034A patent/AR051037A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006036886A2 (en) | 2006-04-06 |
| US20060072465A1 (en) | 2006-04-06 |
| AU2005289647A1 (en) | 2006-04-06 |
| CA2581491A1 (en) | 2006-04-06 |
| AR051037A1 (en) | 2006-12-13 |
| AU2005289647B2 (en) | 2010-05-27 |
| US7742430B2 (en) | 2010-06-22 |
| NZ554166A (en) | 2010-06-25 |
| WO2006036886A3 (en) | 2009-06-18 |
| MX2007003517A (en) | 2007-05-18 |
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| EEER | Examination request | ||
| MKLA | Lapsed |
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