The physical position of an unknown node in a network is determined by sending a first sent WiFi signal from one of an unknown node and a first reference node having a known location, and repeating the sent WiFi signal in the other of the unknown node and first reference node with a first reply WiFi signal. A distance is derived between the unknown node and the first reference node from the time of flight of the first sent and first reply WiFi signals. A second WiFi signal is sent from one of the unknown node and a second fixed node having a known location, and repeating the sent second WiFi signal in the other of the unknown node and second reference node with a second reply WiFi signal, and a distance is derived between the unknown node and the second reference node from the time of flight of the second sent and second reply WiFi signals. A physical location of the unknown node is determined based on the derived distances between the unknown node and the first and second reference nodes.
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
G01S 5/14 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques déterminant des distances absolues à partir de plusieurs points espacés d'emplacement connu
Various embodiments include a virtual meter. The virtual meter includes a controller configured to communicate, with a utility meter, meter information, using a first communications protocol. The controller may also be configured to translate between the meter information and virtual meter information. The controller may further be configured to communicate, with a smart energy network, the virtual meter information using a second communications protocol. Other devices and methods are disclosed.
The physical position of a movable node in a network is determined by sending a first signal from a first reference node to at least a second reference node and the unknown node. The unknown node receives the first signal and sends a second signal to at least the second reference node in phase with the first signal. The first signal and the second signal are received in the second reference node and the phase of the received signals is compared to determine the position of the unknown node based on the phase difference between the received first and second signals.
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
4.
MESH NETWORK NODE SERVICE IN A SLEEPING MESH NETWORK
A set sleep period is coordinated among a plurality of mesh network nodes to conserve power, and a temporarily reduced sleep period is coordinated among the plurality of nodes to facilitate mesh network node service or installation activity. The reduced sleep period comprises scheduling a period of time during which the sleep period is reduced, or reverting from the temporarily reduced sleep period to the original set sleep period after predetermined period of time. Temporarily reducing the sleep period includes distributing a message throughout the mesh network when the mesh network nodes are awake.
A set sleep period is coordinated among a plurality of mesh network nodes to conserve power. A neighbor wireless mesh network node in proximity to a second node to be added to the mesh network is actuated, causing the neighbor wireless mesh network to be woke from a sleep state. The second node is added to the wireless mesh network by exchanging data with the neighbor wireless mesh network node to join the network.
The physical position of a movable node in a network is determined by sending a broadcast message from the movable node repeated through a path comprising at least a first node, a second node, and a third node, wherein the first, second, and third nodes have known locations. The movable node receives the broadcast message from the first, second, and third nodes, and measures the time from sending the repeated broadcast message to the time the broadcast message is received from each of the first, second, and third nodes. The movable node determines the distance from the movable node to the first, second, and third network nodes by using at least a known turnaround time and known message propagation velocity, such that the position of the movable node is determined.
G01S 5/02 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques
G01S 5/14 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance utilisant les ondes radioélectriques déterminant des distances absolues à partir de plusieurs points espacés d'emplacement connu
G01S 5/00 - Localisation par coordination de plusieurs déterminations de direction ou de ligne de position; Localisation par coordination de plusieurs déterminations de distance
G01S 13/87 - Combinaisons de plusieurs systèmes radar, p.ex. d'un radar primaire et d'un radar secondaire
7.
SYSTEM AND METHOD FOR OPTIMIZED INITIAL CONFIGURATION DISTRIBUTION FOR CYCLIC SLEEPING DEVICES
Various embodiments include a method and system for optimizing the initial configuration of cyclic sleeping devices on a wireless network. The devices, or nodes, may need additional configuration by a configuration device after being placed on the network. Some nodes may sleep and not report in to the configuration device causing the configuration device to reach out to these non-reporting nodes. The configuration device may have limited resources with which to transmit the configuration to the nodes, and so the network can be efficiently configured if the configuration device reaches out to non-reporting nodes when it does not expect to use its transmission resources to configure a reporting node. This can be accomplished by maintaining a list of nodes yet to be configured, using the node configuration and reporting times to determine periods in which the configuration device's transmission resources will be idle, contacting non-reporting nodes during those periods.
A planar antenna, such as included as a portion of a wireless communication assembly, can include a dielectric portion, a first conductive portion, extending along a surface of the dielectric portion, and a second conductive portion, parallel to the first conductive portion, extending along the surface of the dielectric portion, the second conductive portion laterally offset from the first portion to provide a specified lateral separation between the first and second conductive portions. The first and second conductive portions can be configured to provide respective resonant operating frequencies ranges offset from each other, and the first and second conductive portions can be configured to follow a commonly-shared path, including at least one bend, along the surface of the dielectric portion.
H01Q 1/24 - Supports; Moyens de montage par association structurale avec d'autres équipements ou objets avec appareil récepteur
H01Q 1/38 - Forme structurale pour éléments rayonnants, p.ex. cône, spirale, parapluie formés par une couche conductrice sur un support isolant
H01Q 5/00 - Dispositions pour faire fonctionner simultanément des antennes sur plusieurs gammes d'ondes, p.ex. dispositions bibandes ou multibandes
H01Q 9/42 - Antennes résonnantes avec alimentation à l'extrémité d'un élément actif allongé, p.ex. unipôle avec éléments repliés, les parties repliées étant espacées l'une de l'autre d'une petite fraction de la longueur d'onde émise
An apparatus, such as an antenna assembly, can include a flexible dielectric sheet, a first flexible conductor coupled to the flexible dielectric sheet, a second flexible conductor coupled to the flexible dielectric sheet, a matching section electrically coupled to the first and second conductors, and a hollow dielectric housing having a curved interior surface. The first and second flexible conductors can be sized, shaped, and laterally spaced a specified distance from each other to provide a specified input impedance corresponding to a specified range of operating frequencies for use in wireless information transfer between the antenna assembly and a satellite. The first and second flexible conductors can be located along the curved interior surface of the hollow dielectric housing following an arc-shaped path along the curved interior surface.
An approximately planar wideband antenna can include a first conductive portion coupled to a dielectric portion and mechanically supported by the dielectric portion, the first conductive portion including at least one edge corresponding to a planar conic section, such as including one or more of an elliptic, a parabolic, or a hyperbolic shape. Such an antenna can be electrically coupled to a matching circuit, the matching circuit configured provide a specified input impedance corresponding to a specified range of frequencies. Such a range of frequencies can span at least an octave, or more.
An apparatus comprising a cordless, mains powered mesh network router. The mains powered mesh network router includes a controller configured to initiate a first indication when the mains powered mesh network router is mounted to an electrical outlet, and initiate a second indication when the controller joins a mesh network. Other devices, methods and systems are disclosed.
At (1502) is a digital input, at (1504) an external I/O, and at (1506) an analog or digital output, and at (1508) a test point. Also as indicated are positions for resistors: R1, R2A, R2B, R3A, R3B, R4A, R4B, R5, R6, R7; and capacitor: C1. Also shown are transistor. Q1, +5V,+3.3V, and ground. At the locations indicated are where the schematic entries in Figure 15A may be placed. A plus inside a trace denotes the +5V supply, and a minus inside a trace denotes ground. For example, if resistive components can only be placed horizontally, then padsassociated with R2B, R5, and R6 may be repositioned.
A method comprising compressing a first XML document into a binary stream, converting the binary stream into a compressed valid XML document, and associating at least one XML tag with the compressed valid XML document in order to identify the document as a compressed XML document.
A method of managing devices on a client/server computer network that comprises providing a transport protocol layer to transfer data among the devices, providing a request and response protocol layer implemented using a data-type aware general markup language, and transferring device management information to and from the devices using the transport protocol layer and the request and response protocol layer.
A system, method and kit for forming a powered communications interface in a computer system (10) having a computer housing (12). A processor (14), a power supply (16) and a communications interface (20) are installed in the computer housing (12). The power supply (16) includes a ground rail, a first power rail having a first nominal voltage and a second power rail having a second nominal voltage. The processor (14) is connected to the power supply (16) and the communications interface (20). A booster (26) is connected to the first power rail and is used to boost power from the first power rail to a third nominal voltage and to place the third nominal voltage on a third power rail. An externally accessible connector (18) having a ground conductor and first, second and third power conductors is connected to the booster (26) and the power supplies (16) such that , wherein the first conductor is connected to the first power rail, the second conductor is connected to the second power rail and the third conductor is connected to the third power rail.
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