Landis+gyr Innovations, Inc.

California Eastern Laboratories, Inc.

James Paul Hartman

Stephen John Chasko

Damon Mark Stewart

Chris Calvert

Jeff B Shudark

Sean Holcombe

Jeffrey B Shudark

David Anthony Bishop

Damien Hugoo

Matthew Todd Smith

A network tap device is configured to join a secured network to be monitored through a joining process. The joining process includes communicating with the access point to obtain security keys of the monitored network and communicating with the access point to obtain a network address for the network tap device. After joining the secured network, the network tap device collects the network data on the secured network. Collecting the network data includes detecting network traffic on the monitored network, the network traffic containing encrypted data and unencrypted data, decrypting the encrypted data in the network traffic using the security keys to generate decrypted data, and adding the decrypted data and unencrypted data to the network data. The network tap device further transmits the collected network data to a monitoring workstation via a data transmission network.

Monitoring secured network using network tap devices

A battery powered wireless apparatus, method, and system. A battery powered wireless node operates to communicating with a gateway on a local area network through the network communication device, cease communication with the gateway after a predetermined period for a predetermined interval of time, and communicate with the gateway continuously when an event occurs.

Battery powered wireless node reporting

A system, apparatus, and method for network traffic management. The method includes establishing a building zone corresponding with a physical space in the building, determining how many networked devices are in the building zone, determining a current multicast use level, establishing a virtual group threshold based on a current portion of a network multicast capacity that is being used, and unicast transmitting a message to a plurality of networked devices in the building zone when the number of networked devices in the building zone is less than the virtual group threshold.

Dynamic virtual groups apparatuses, systems, and methods

A control network communication apparatus, method, and system. The method of communicating control network information to a user interface includes a wireless gateway receiving control system information from a control node wirelessly over a local area mesh network, the wireless gateway receiving a request for control system information when it polls a remote server over a wide area network, the request transmitted to the remote server from a user interface, and the wireless gateway providing the requested control system information to the remote server for delivery to the user interface.

Single source of information apparatuses, methods, and systems

A message retransmission apparatus, method, and system. The method includes transmission of a multicast message to a plurality of nodes by a network communication device, receipt by the network communication device of return status messages from the plurality of nodes during a predetermined period of time, and retransmission by the network communication device of the message that was multicast by unicast to at least one of the plurality of nodes, that node having provided a state that does not correspond with the command included in the multicast message.

Retransmission of an unexecuted message

A system, apparatus, and method for network traffic management. The method includes receiving a message to be broadcast over a network, assigning a predefined delay time to the transmission the message, and transmitting the message over the network after passage of the predefined delay time.

Broadcast transmission control apparatuses, systems, and methods

A system, apparatus, and method for network traffic and processor activity management. The invention includes a network communication device for communicating data to remote devices, a data storage device for storing a plurality of messages to be communicated on the network by the network communication device, a real-time clock, and a processor. The processor includes instructions which, when executed by the processor, cause the processor to receive a signal from the real-time clock that at least one message in the data storage device is to be communicated on the network through the network communication device, retrieve the at least one message from the data storage device, transmit the at least one retrieved message and up to a predetermined number of retrieved messages onto the network through the network communication device, and prevent any messages retrieved from the data storage device that are more than the predetermined number from being transmitted on the network for a predetermined period of time.

Network traffic and processor activity management apparatuses, systems, and methods

Systems and methods are disclosed for interleaving communications with a home area network (HAN) and a data network. A gateway device interleaves communications within timeslots of a time slotted channel hopping protocol. A gateway device can be configured to determine, during a first portion of a timeslot, whether the gateway device received a portion of a message from a data network. If the gateway device receives no messages from the data network during the first portion of the timeslot, the gateway device switches to listen for communication from the HAN during a second portion of the timeslot. If the gateway device receives a portion of the message from the HAN, the gateway device continues to receive receives the remainder of the message until one or more trigger conditions that cause the gateway device to listen for communication from the data network.

Interleaved communication with resource providers and a home area network

Disclosed are various embodiments for optimizing network event timers for a node. The node obtains data for transmission by the node via a network. The node uses time intervals of a clock as a basis for determining actions associated with the network. A transmission duration is calculated that corresponds to the time for transmitting the data via the network based on a data rate of the network and a size of the data. The node calculates a transmission delay based on the transmission duration. The transmission delay is less than a clock interval and controls when transmission of the data is completed by the node. After the expiration of the transmission delay, the node transmits the data via the network. The node initiates an event timer when the transmission is completed, where the event timer measures time based upon counting the time intervals elapsed since the event timer began.

Techniques for optimizing network event timers

Disclosed are various embodiments for compensating for clock drift between nodes in a time synchronous network. A node receives time synchronization information from a parent node in the network. A drift between a clock of the node and a clock of the parent node is determined based upon the time synchronization information. The node identifies a number of time slots of the network since making a last time synchronization based on previous time synchronization information transmitted from the parent node. A compensation interval is calculated that represents a number of the time slots over which the clock of the node deviated, with respect to the parent node, by a predefined compensation value. The node compensates, by the compensation value, one of the time slots according to the compensation interval.

Clock drift compensation in a time synchronous channel hopping network

Systems and methods are disclosed for monitoring the health of a home area network. An example system includes multiple devices communicatively coupled via a home area network and a gateway device communicatively coupled to the devices via the home area network. The home area network is configured for communicating information regarding a resource consumed at a geographical area serviced by the home area network. The gateway device includes a processor and a computer-readable medium. The processor can execute instructions embodied in the computer-readable medium to perform operations. The operations include monitoring communication metrics describing communications among the devices via the home area network. The operations also include monitoring application-level events generated by applications executed by the devices. The operations also include generating a status indicator for the home area network based on the communication metrics and the application-level events. The status indicator describes a health of the home area network.

Monitoring the health of a home area network

Systems and methods are provided for adjusting time in a synchronized network by a central device on the network. Each device on the network provided current time, hopping pattern, time slot duration, and an absolute slot number. Devices on the network synchronized to communicate on a repeating schedule of time slots. The central device receives an updated time and determines a time difference between the updated time and the current time. The current time is adjusted in integer multiples of the hopping pattern length up to the time difference. The absolute slot number is updated based on the number of time slots in the adjusted time difference. The updated absolute slot number is propagated to other devices on the network. In turn, these other devices may also propagate the updated absolute slot number.

System and method for time adjustment in a time synchronized channel hopping network

Disclosed are various embodiments for optimizing a hopping sequence for a network. A network device generates sequences of channel numbers based at least in part upon a seed value. The network device concatenates the sequences into the hopping sequence, wherein each of the sequences is a segment of the hopping sequence. The network device adjusts the position of any adjacent repeating channel numbers within the hopping sequence to separate the channel numbers. The network device configures its network interface using the hopping sequence in order to communicate via the network.

Growing community of inventors

Canton, GA, United States of America

James Paul Hartman