153 results about "Wireless mesh network" patented technology

The invention relates to the technical field of LED induction lamps, in particular to an LED induction lamp intelligent control method and system based on wireless networking, and the method comprises the following steps: S1, enabling a plurality of LED induction lamp nodes to be interconnected through a wireless Mesh network mode of a multi-node, self-organizing and self-healing distributed communication architecture; s2, performing linkage detection by using PIR and a microwave radar, and identifying activity information in the environment; s3, after the effective activity is sensed, lighting triggering and adjusting operation is executed locally; s4, the trigger node broadcasts a linkage instruction to other nodes in the group, so that the plurality of LED induction lamps respond synchronously; s5, in the synchronous response process of the multiple LED lamps, the working mode is dynamically adjusted according to the environment and activity conditions; according to the LED induction lamp intelligent control method and system based on the TSCH self-organizing self-healing Mesh network, through PIR and microwave dual-technology fusion (time difference and temperature compensation is utilized) and RSSI + TOA dual-distance filtering, false alarms and cross-regional linkage are greatly reduced.

The invention relates to an intelligent security management system for a sewage pumping station, which relates to the technical field of intelligent security management and comprises a front-end sensing layer, a transmission layer, a platform layer and an application layer, the front-end sensing layer is composed of a high-definition network camera deployed on the enclosure wall of the pump station and the top of a process area, a face recognition terminal installed on the side wall of a doorframe of an entrance and exit and a license plate recognition unit, the camera is powered by a POE, and the access controller is connected with a biological recognition card reader through an RS485 bus. Omnibearing monitoring and accurate identity verification of a pump station area are achieved through a high-definition network camera of the front-end sensing layer and the biological recognition technology, illegal invasion is effectively prevented, the transmission layer is combined with the wireless Mesh network through the industrial Ethernet, the stability and the anti-interference capacity of data transmission are ensured, and the service life of the transmission layer is prolonged. And the smoothness of a monitoring picture can be kept in a complex electromagnetic environment, and rapid fusion of multi-source data and efficient processing of service logic are realized.

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 present disclosure relates to techniques utilizing beaconing in wireless networks, such as mesh wireless networks. For example, an electronic device may send a single beacon request over a wireless network, and other electronic devices in the wireless network may send beacons at a particular rate for a period of time in response to the beacon request. The particular rate and the period of time may be indicated in the single beacon request, and the electronic device may be able to determine its location based on the beacons received from the other electronic devices in the wireless network.

In one aspect, a device management platform is provided. The device management platform includes at least one gaming device coupled to a host system and a plurality of modular devices in wireless communication with the host system and forming a wireless mesh network therebetween. At least one of the plurality of modular devices is coupled to the gaming device and configured to determine, based on information retrieved via the wireless network, a location of the gaming device, and generate a profile based on a device configuration of the gaming device and the location of the gaming device, where the profile defines a role of the gaming device.

This disclosure provides methods, components, devices and systems for end-to-end encrypted transmissions in a wireless mesh network. Some aspects more specifically relate to communications between one or more access points (APs) and one or more stations (STAs) in a wireless mesh network. In some examples, the wireless mesh network may include a central AP (CAP) that communicates with one or more other APs via one or more links. In the wireless mesh network, user data may be transmitted to a STA via data packets that are encrypted per link. In some implementations, the data packets may be end-to-end encrypted between the CAP and the STA and assigned end-to-end packet numbers and end-to-end sequence number. Thus, a first data packet may be encapsulated within one or more second data packets such that one or more intermediate APs may refrain from decrypting the first data packet.

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.

A wireless mesh network and a method for transmitting and receiving signals in the wireless mesh network. The wireless mesh network includes a plurality of low-power nodes. Each low-power node receives signals intermittently when serving as a data receiving node or a data relay node, thereby reducing the power consumption of the wireless mesh network.

The present invention provides a wireless Mesh adaptive channel selection method and system, which relates to the field of channel selection and optimization technology. The present invention first marks the data transmission path and the corresponding channel based on the Mesh network topology, and collects performance parameters such as delay packet loss rate, transmission rate, bandwidth, signal strength, and noise strength at fixed time intervals. The delay packet loss rate and transmission rate are calculated by detecting data packets, and the bandwidth signal strength and noise strength are obtained with the help of tools. Then, the delay packet loss rate, transmission rate, and bandwidth data are extracted to construct a channel quality model. The deep packet inspection engine nDPI is used to identify the service type, and the weight is dynamically adjusted according to the bandwidth ratio. At the same time, a channel signal-to-interference quantization model is constructed based on the signal strength and noise strength. Finally, the signal-to-interference quantization threshold is set to screen out qualified channels, select the channel with the largest channel quality result as the optimal channel and switch to it, effectively improving the rationality of wireless Mesh network channel selection and communication performance.

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 PON system includes both a PON via which optical services are delivered and a wireless network overlaying the PON. The wireless network may be a self-organizing wireless mesh network, and may generally operate as a logical signaling pathway via which information regarding optical states / statuses of PON components and / or related information is delivered from the field to back-end servers of the PON system. Accordingly, the system may include multiple in-common nodes (e.g., OLTs, LMTUs, etc.) which are included in both the PON and the wireless network. Based on optical information received via the wireless network, the servers can localize the physical location of a PON fault to a particular geographical region of multiple regions serviced by the PON (in some cases narrowing the fault's physical location to a particular span, FDH, or optical terminal), and may dispatch a technician directly to the localized physical location to address the fault.

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.