94 results about "Wireless mesh network" patented technology

A system for enhanced time division duplexing (TDD) synchronization in a wireless mesh network includes a master access point device and a plurality of repeater devices. The master access point device propagates a first extended wireless local area network (WLAN) beacon to plurality of repeater devices in a specific order based on network topology mapping information. The first extended WLAN beacon includes a first synchronization pattern. A first repeater device receives the first extended WLAN beacon and compares the first synchronization pattern with a prestored synchronization pattern. The first repeater device iteratively adjusts the timing of a local oscillator based on signal strength or signal-to-noise ratio measurements until the patterns match with the prestored synchronization pattern. The first repeater device locks TDD signal timing at the first repeater device based on the first synchronization pattern that matches with the prestored synchronization pattern.

The application relates to the technical field of wireless Mesh networks, and discloses a synchronization method for a wireless Mesh network, wherein the Mesh network comprises a plurality of Mesh network nodes connected to each other, the synchronization method comprises the following steps: obtaining external relative execution time in a Mesh control message received by a Mesh network node; obtaining internal relative execution time saved by the Mesh network node; and correcting the internal relative execution time in the case that the external relative execution time is less than the internal relative execution time. The synchronization operation of the Mesh network node is realized by using the relative time mode, the Mesh network node is clocked by using an internal crystal oscillator, the device of the Mesh network node does not need to quickly re-synchronize the network clock after being powered off and then powered on, and the accuracy of the synchronization operation of the device of the Mesh network node in the Mesh network can be improved. The application further discloses a synchronization device for a wireless Mesh network and an electronic equipment.

This application relates to a route repair method and related equipment based on a wireless mesh network, belonging to the field of wireless network technology. The method includes: according to the initial communication path from the source node to the destination node, sequentially sending transmission messages to the next-hop routing nodes starting from the source node; and in the event of transmission message transmission failure, determining a first node and a second node that cannot communicate with each other; selecting a first target communication path from the first node to the destination node from the candidate paths stored in the routing table of the first node; the stored candidate paths are routing paths that do not overlap with the initial communication path; in the first target communication path, the routing nodes adjacent to the first node do not include the second node; starting from the first node, sequentially transmitting transmission messages to each routing node of the first target communication path until the transmission message is transmitted to the destination node. This method can improve the route repair speed.

The present application relates to the field of wireless communication and positioning technology, in particular to a three-dimensional space positioning method based on wireless mesh network and a server; the method comprises determining path loss factor and reference signal strength of free space propagation model by using known distance and signal strength between N reference nodes; selecting M reference nodes with strongest signal received by target node, obtaining coordinates of the M reference nodes and calculating distance from the target node based on the determined free space propagation model; calculating initial coordinate value of the target node by using genetic algorithm based on coordinates of the M reference nodes and measured distance from the target node; calculating final coordinate value of the target node by using improved Gauss-Newton algorithm based on the initial coordinate value of the target node. The present application can effectively reduce the influence of multipath interference and shadow fading on RSSI positioning, and significantly improve the accuracy and stability of three-dimensional positioning.

Embodiments of a device and methods to operating the same are described that can reliably monitor a plurality of battery systems including a wireless mesh network. The plurality of battery systems are respectively coupled to a plurality of communication devices each configured to receive battery information regarding the battery system coupled thereto. Each communication device may include a communication interface and configured to communicate with other communication devices on a wireless mesh network. Battery information regarding a battery system may be transmitted through the wireless mesh network to reach a gateway. Battery information may further be transmitted from the gateway to a user device, the Internet, or another network for monitoring the battery systems in a communication protocol different from the wireless mesh network. A gateway may be a dedicated gateway device or any of the communication devices on the wireless network.

The invention belongs to the field of wireless communication and Internet of Things, and provides a wireless sensor network system based on star flash MESH, which comprises a wireless Mesh network formed by a plurality of nodes, and the nodes at least comprise one or more of star flash common nodes, star flash relay nodes, star flash fusion nodes and star flash low-power consumption nodes. According to the invention, through a hybrid node architecture and a double-loader design, low power consumption and high bandwidth requirements are considered, and high-speed services such as audio and video, firmware upgrade and the like are supported; end-to-end encryption and identity authentication are realized by adopting a national cryptographic algorithm, so that the network security is improved, and replay and man-in-the-middle attack are prevented; meanwhile, the protocol stack is designed in a layered mode, the modularization degree is high, and dynamic role configuration and flexible service expansion are supported; a quick relay mark and a sliding window anti-replay mechanism are introduced into a network layer, so that the forwarding efficiency is improved while the safety is ensured; eCDH and PIN authentication are combined in the network distribution stage, and safe and credible equipment network access and key management are achieved.

Embodiments described herein include techniques for localizing devices connected to wireless networks, such as wireless mesh networks. A device connected to a wireless mesh network may maintain and share information, such as location data and identifiers, regarding the device and other devices connected to the device. The device itself or a computing system to which the device connects may determine locations for the devices in the wireless mesh network and generate a device map that indicates the locations of the devices.

The invention discloses an elevator energy-saving and safety collaboration system and method based on a wireless Mesh network, and relates to the technical field of elevators, the elevator energy-saving and safety collaboration system comprises an energy storage device connected with a power grid and used for recycling and releasing electric energy; an elevator device as an energy conversion and consumption unit; the number of the wireless communication modules corresponds to the number of the energy storage devices and the number of the elevator devices, and the wireless communication modules are connected with the energy storage devices and the elevator devices through communication interfaces; and the gateway machine is connected with the plurality of wireless communication modules in a wireless mode to form a self-organized Mesh network. According to the invention, the energy storage standby power supply is utilized to maintain online communication and sensing during power failure, remote active rescue is supported, and the safety is greatly improved.

To perform polling while avoiding packet collisions in a wireless mesh network. [Solution] The lighting control system according to the embodiment comprises each device connected to a lighting control network and an information processing device that monitors the operating status of each device. The information processing device comprises a distribution unit that assigns each device to each group and a polling unit that polls the status of each device for each group assigned by the distribution unit.

Methods and device architectures for improving the energy efficiency of end devices in a wireless mesh network. In an example, an end device of the network includes a wireless transceiver, a first processing core configured to implement a media access control layer (MAC), and a second processing core configured to implement a physical layer (PHY). The PHY operates to receive a first data poll message from the MAC and transmit the message to an external device via the wireless transceiver. The PHY further operates to receive an acknowledge message including a frame pending value. If the frame pending value indicates that the external device does not have buffered data for the end device, the PHY generates a second data poll message based on the first data poll message, including incrementing one or more of a sequence number field value, a frame counter field value, and a message integrity check field of the first data poll message, thereby enabling the MAC to remain in a low power state while the PHY transmits the second data poll message.

This invention discloses a wireless network-based intelligent fire monitoring method and system, relating to the field of fire detection. The method includes: deploying infrared thermal imaging monitoring nodes based on a wireless mesh network; periodically monitoring through these nodes to obtain infrared image data; acquiring temperature data from the infrared image data and calculating surface humidity data; obtaining a two-dimensional image of fire hazard level distribution based on the surface humidity and temperature data; and conducting manual or robotic patrols based on the two-dimensional fire hazard level distribution image. This invention uses infrared remote sensing to calculate the surface humidity and ground temperature of combustible materials within the detection area, combined with multi-node collaborative monitoring via a wireless mesh network and a quasi-effective timing correction algorithm. This fundamentally transforms fire prevention from a passive response to proactive prevention, significantly improving early warning accuracy and the efficiency of resource utilization in fire control.

A method for multi-channel path discovery between a first node and a second node in a wireless mesh network, the method being performed by an intermediate node and comprising: the intermediate node receiving a path request for establishing a path between the first node and the second node, wherein the path request includes node count information related to the path between the first node and the second node; the intermediate node determining that the received node count information is less than or equal to node count information stored in a discovery table of the intermediate node corresponding to the path between the first node and the second node; and the intermediate node updating the stored node count information with the received node count information.

The application discloses a coal-based solid waste filling fire prevention and extinguishing intelligent early warning method, system, device and medium, the method first obtains the environmental physical quantity data and network state original data of the filling area through the wireless mesh network including the anchoring node and the drift node, then carries out signal propagation analysis on the network state original data, extracts the signal propagation abnormal characteristics caused by environmental medium disturbance, obtains the first perception quantity, at the same time, carries out combustion analysis on the environmental physical quantity data, extracts the physicochemical abnormal characteristics related to the combustion process, obtains the second perception quantity, then carries out space-time correlation calculation on the first perception quantity and the second perception quantity in the same space-time range, obtains the coupling risk index, and generates the early warning instruction when the coupling risk index exceeds the preset risk threshold. The application can improve the reliability, accuracy and early perception ability of the coal-based solid waste filling area hidden fire source early warning.

A given wireless communication node of a wireless mesh network may include at least one processing unit and a plurality of radio modules, where at least one given radio module of the plurality of radio modules is capable of operating in a temporary network-sensing mode in which the given radio module gathers information about any other wireless communication node of the wireless mesh network that is sensed within the given wireless communication node's surrounding area by scanning for radio-frequency signals being emitted by any other radio module within at least a portion of the given wireless communication node's surrounding area while an antenna azimuth of the given radio module is being rotated.

A wireless mesh network node comprising: a plurality of radios mounted on a platform, wherein each of the plurality of radios is a complete, stand-alone, unmodified radio lacking only an antenna; a plurality of directional antennas mounted on the platform, wherein each of the plurality of antennas is communicatively connected to a corresponding radio of the plurality of radios, wherein a combination of an antenna and its corresponding radio is referred to as a sector; and a master controller mounted to the platform and operatively connected to the sectors, wherein the wireless mesh network node is configured to discover remote neighbor nodes by having each sector perform a zone-limited search of a surrounding area without the use of an omnidirectional or broadbeam antenna, and wherein the master controller is configured to receive, from the sectors, link-state information and geo-location information of the remote neighbor nodes.

The application relates to a central node routing discovery method based on a wireless Mesh network and related equipment, and relates to the technical field of wireless networks. The method comprises the following steps: acquiring a routing discovery broadcast forwarded by a previous-hop routing node to a current-hop routing node; determining the validity of the best path of the previous hop by comparing each routing node passed through by the best path of the previous hop with the current-hop routing node; in the case that the best path of the previous hop is valid, determining the best path of the current hop according to the current-hop routing node and the best path of the previous hop, and updating the routing discovery broadcast according to the best path of the current hop; forwarding the updated routing discovery broadcast to a next-hop routing node, and taking the next-hop routing node as the current-hop routing node to continue the routing discovery until the best paths of all the routing nodes to the central node are determined. The method can reduce the network overhead of routing discovery.

Methods and device architectures for improving the energy efficiency of end devices in a wireless mesh network. In an example, an end device of the network includes a wireless transceiver, a first processing core configured to implement a media access control layer (MAC), and a second processing core configured to implement a physical layer (PHY). The PHY operates to receive a first data poll message from the MAC and transmit the message to an external device via the wireless transceiver. The PHY further operates to receive an acknowledge message including a frame pending value. If the frame pending value indicates that the external device does not have buffered data for the end device, the PHY generates a second data poll message based on the first data poll message, including incrementing one or more of a sequence number field value, a frame counter field value, and a message integrity check field of the first data poll message, thereby enabling the MAC to remain in a low power state while the PHY transmits the second data poll message.

This invention discloses a roaming wireless mesh network design method, apparatus, and electronic device, relating to the field of wireless network transmission. The method includes: constructing initial routing information for each node; after obtaining the initial routing information carried by the beacon signals of neighboring nodes, calculating the direct link cost between the current node and the neighboring nodes, and the real-time link cost from the current node to the target node via the neighboring nodes; if the real-time link cost is less than the link cost in the initial routing information of the current node, updating the next-hop node identifier in the initial routing information to the neighboring node, and synchronously updating the link cost to the real-time link cost; when the current node sends or forwards data, determining the corresponding next-hop node based on the updated routing information of the current node, and forwarding the data. This invention solves the technical problem that existing mesh networks can support terminal roaming but cannot meet the self-organizing network communication needs of devices in roaming states.

The present disclosure is directed to systems and methods for providing wireless connectivity to HVAC systems via a mesh network. Particularly, a connectivity architecture is provided that forms a seamless wireless mesh network of connected HVAC systems. For example, HVAC systems may be in communication with a plurality of DTUs that form the mesh network. The DTUs communicate with the HVAC systems and also communicate with remote devices. A dedicated gateway device may also be provided in the mesh network to communicate with the remote devices. This architecture allows a user to remotely interact with such systems via a remote device (for example to view status information for the systems, provide commands to adjust the operation of the systems, etc.). Likewise, a building management system (BMS) (or other type of automated system) may wirelessly communicate with such systems to perform similar functions, but in an automated manner.

A distributed environmental control system comprises control nodes that communicate via wireless mesh networks to predict user movement and automate loads without centralized coordination. Each node executes a local inference engine (Markov model, HMM / DBN, or reinforcement learning policy) to predict occupancy patterns, broadcasts predictions to neighbors, and makes autonomous actuation decisions based on local and shared data. When multiple nodes control loads in a shared zone, a Runtime Actuation Authority mechanism designates a single decision-maker based on most recent manual interaction, with authority epochs and deterministic total order resolution ensuring distributed consistency. The system prevents feedback loops via causal action identifiers, logical timestamps, and recent action caches. Sensor data is transmitted as compressed waveform encodings. A deterministic policy layer enforces safety and comfort constraints. The reinforcement learning embodiment learns household preferences from user feedback, adapting actuation behavior to optimize satisfaction, comfort, and energy efficiency while maintaining safety guarantees.

Disclosed herein is mesh relay module for relaying signals between nodes in a wireless mesh network. In one implementation, this mesh relay node may include a receiver front end comprising a receiver-side phased antenna array for receiving signals in one respective beam direction, a transmitter front end comprising a transmitter-side phased antenna array for transmitting signals in another respective beam direction, a communication interface, and circuitry that is configured to control the respective beam directions of the receiver and transmitter front ends and transfer signals between the receiver and transmitter front ends. Further, this mesh relay node may function to provide an indirect communication path between nodes within the wireless mesh network by (i) receiving signals from a first direction associated with a first node via the receiver front end and (ii) transmitting received signals in a second direction associated with a second node via the transmitter front end.

Mobile gateway devices for connecting to a wireless mesh network having a plurality of nodes include a wireless radio module structured to communicate with the plurality of nodes via the wireless mesh network, wherein the plurality of nodes includes at least one instrument to collect information; and a computer structured to: receive the information from the plurality of nodes via the wireless radio module; and transmit the information to a remote server via a satellite connection.

The present invention discloses a wireless mesh network-based battery management system and an operation method thereof. The battery management system includes first through Nth Battery Management Units (BMUs) and a master BMU that configure a wireless mesh network. The master BMU may be configured to determine network performance of the first through Nth BMUs, determine a state of charge of the battery modules using operational characteristic data received from the first through Nth BMUs associated with and coupled to the first through Nth battery modules, designate a BMU coupled to a battery module whose network performance is above a standard and whose state of charge satisfies a balancing condition as a router BMU, and designate the remaining BMUs as end BMUs. The router BMU may be configured to form a communication link with each end BMU and transmit the operational characteristic data of the battery modules collected from each end BMU and the operational characteristic data of the battery modules coupled to it to the master BMU.

An apparatus (100, 1100, 1200a-g) for emulating a wireless mesh network is disclosed. The apparatus comprises a plurality of monopole antennas (105, 1105) and at least one connector (110, 1100) for conductively coupling the plurality of monopole antennas to at least one communications device (220). Each monopole antenna is disposed within a near-field region of a neighboring monopole antenna when the monopole antennas are used to emulate a wireless mesh network operating within a communications frequency range of 3500 MHz to 300 MHz. A system (400, 500) for emulating a wireless mesh network and an associated method of emulating a wireless mesh network are also disclosed.

The present invention relates to a method for configuring a wireless mesh network and, more particularly, to a method for configuring a wireless mesh network which configures an optimal network minimizing network load while maintaining desired connectivity by preserving network coverage even in the event of a failure in a wireless network device.

The utility model relates to a remote wireless communication system for an onshore distributed wind farm. The method is suitable for the field of land distributed wind power generation. The technical problem to be solved by the application is to provide a remote wireless communication system for an onshore distributed wind power plant. According to the technical scheme, the remote wireless communication system for the land distributed wind power plant comprises a wind power plant control center which is arranged in a wind power plant area and is provided with at least one Mesh device; the wind driven generator communication system is arranged in one-to-one correspondence with each wind turbine in the wind power plant and is provided with at least one Mesh device; and the Mesh equipment in the wind power plant control center and the Mesh equipment of each wind driven generator communication system in the wind power plant form a wireless Mesh network.

This disclosure provides an apparatus operated as a relay node in a wireless mesh network for packet routing. The apparatus comprises processing circuitry that receives a packet including indications of a source node and a destination node. When the relay node is not the destination node, the processing circuitry determines whether the packet includes a path ID identifying a delivery route for the packet. When the packet includes the path ID and a routing table of the relay node includes a first next-hop node associated with the path ID, the processing circuitry transmits the packet to the first next-hop node. When the packet does not include the path ID or the routing table does not include the first next-hop node, the processing circuitry transmits the packet to one of a second next-hop node associated with the destination node and a third next-hop node associated with an intermediate destination node.

This invention discloses an SAP (Super Plumbing Agent) stack spray fireproofing and sealing system with built-in horizontal components and its implementation method. The system includes distributed intelligent fireproofing units, a closed-loop pressurized fluid distribution network, and a water-absorbing and sealing unit. Unit collaboration is achieved through a wireless mesh network, intelligently triggering three-level spray modes—high spray volume, low spray volume, and asymmetric compensation—based on temperature / strain gradients to precisely suppress thermal warping deformation and provide full-coverage, adaptive dynamic fireproof protection for the horizontal components.

The invention provides a charging pile ad hoc network method and system in the technical field of charging pile networking, and the method comprises the steps: S1, enabling a first charging pile to serve as a main node to be connected with a server, enabling a subsequent charging pile to serve as a child node, carrying out the authentication with the main node, and enabling the subsequent charging pile to be connected with a wireless Mesh network managed by the main node; s2, scanning a wireless environment by each charging pile to construct a signal attenuation thermodynamic diagram, and re-electing a main node based on the signal attenuation thermodynamic diagram and the node state data; s3, when the main node and the sub-nodes are disconnected, each sub-node re-elects the main node based on the signal attenuation thermodynamic diagram and the node state data; and S4, when the main node is disconnected with the server, dynamically selecting the sub-node to communicate with the server through a multi-hop relay mode, or uploading a network disconnection fault through the mobile terminal. The method has the advantages that the problem of collaborative optimization of reliability, real-time performance and safety is solved while low-cost deployment and high expansibility are guaranteed, and large-scale landing of a distributed charging scene is supported.

The application provides a networking method and wireless network architecture. In the method, each relay node determines whether it meets the root node setting condition, and determines one node in the plurality of relay nodes as a root node. In the case that at least one wireless mesh network hotspot is scanned, a child node selects one relay node corresponding to the at least one wireless mesh network hotspot as a parent node, and establishes a connection with the parent node. It is ensured that each child node has only one parent node, and each child node has only one root node in the routing path. The data of each child node is transmitted in a one-to-one manner through the parent node, which can reduce the network burden and improve the transmission rate.