10 results about "Wireless relay network" patented technology

The present application belongs to the technical field of mine hoist, and proposes a cage control system and control method based on visual feature extraction and deformation compensation, which comprises a cage integrated terminal installed on the cage of mine, a wireless relay network arranged along the shaft, and a ground control center arranged on the ground; the cage integrated terminal comprises an explosion-proof box body; the present application sets the integrated terminal on the cage, and configures a weighing sensor, an acceleration sensor, and an image acquisition and processing module, so that the cage has real-time sensing capability for its own load state and running state; meanwhile, the image feature extraction module is combined to dataize the internal situation of the cage, realizing the change from traditional indirect detection relying on the hoist side to active sensing at the cage end; and in the case of abnormal wireless bridge communication, the key state data can still be sent through feature extraction and LORA communication module, thereby ensuring the continuous availability of the internal personnel and material state of the cage.

A wireless node that communicates over a radio interface with a wireless access node of a radio access network (RAN), the wireless node comprising: processor circuitry configured to establish, with the radio access node, dual connectivity (DC) comprising a first connection and a second connection, the first connection being relayed by an Integrated Access and Backhaul (IAB) node; receiver circuitry configured to receive from the IAB node a notification message indicating a radio link failure (RLF) on the first connection, and; transmitter circuitry configured to transmit, based on the notification message, a failure information message to the wireless access node using the second connection, wherein; the failure information message comprises information representing the RLF.

The invention discloses an intelligent wireless network intelligent terminal suitable for a complex underground mining space, and relates to the technical field of wireless relay network intelligent terminal equipment. Comprising a receiving antenna arranged on one side of the explosion-proof shell, a transmitting antenna arranged on the other side of the explosion-proof shell, a power interface formed in one side of the top of the explosion-proof shell, a network cable interface formed in the other side of the top of the explosion-proof shell, and a fixing support fixedly installed on the top of the explosion-proof shell. The receiving antenna and the transmitting antenna are both 4 * 4 MIMO polarized antenna arrays and support a vertical and horizontal dual-polarized structure. By adopting the high-strength explosion-proof shell and the 4 * 4 MIMO polarized antenna array supporting vertical and horizontal dual polarization, the device has excellent anti-interference capability and signal penetration performance, can adapt to complex and changeable underground mine environments, supports dynamic switching of multiple frequency bands of 2.4 GHz, 5.8 GHz and 6 GHz, and has the transmitting power larger than or equal to 500 mW.

The present invention discloses a method, apparatus, device, medium, and program product for controlling a router to obtain an IP address. The method is applied to a router in a wireless relay network. The method comprises: obtaining a DHCP message in real time; determining whether the DHCP message is a DHCP Discover message; and if the DHCP message is a DHCP Discover message, discarding the DHCP Discover message to prohibit a secondary router from sending an IP address acquisition request to a DHCP server. Thus, the present invention prohibits a router from obtaining an IP address by discarding the DHCP Discover message sent by the secondary router to the DHCP server.

A wireless relay station to be included in a ladder-type wireless relay network along a moving route of a moving object includes a relay control unit that includes station identification information in the wireless relay network assigned sequentially along the moving route to each of the wireless relay stations included in the wireless relay network and deployed along the moving route, configures and updates, using a first routing table that provides an address of a destination wireless relay station, a second routing table including the address, the station identification information, and an information update time, being associated with one another, of the destination wireless relay station, and provides control to share, among the wireless relay stations included in the wireless relay network, the second routing table configured and updated by each wireless relay station; and a relay communication unit that performs wireless relay communication with other wireless relay stations.

The present invention discloses an adaptive wireless relay networking data transmission method and system, wherein the method comprises: a root device performs networking operations and generates a root device routing information table; the root device detects the response time and the online status of the sub-device and updates its own routing information table; each node device generates its own routing information table and performs networking operations; each node device detects the response time and the online status of the sub-device and updates its own routing information table; the root device or the node device updates its own routing information table according to the routing information table of the sub-device; the root device forms an optimal master-sub-device routing table and a backup master-sub-device routing table; the root device performs data transmission with any node device according to the optimal master-sub-device routing table. The present invention realizes stable and fast wireless data communication between a server device and a terminal device.

The invention discloses a Kupman prediction adjustment method and system for a backup power supply based on a multi-system wireless relay, and relates to the technical field of wireless relay network cooperative communication. The Kupman prediction adjustment method comprises six stages of demand description, node architecture, adaptive link selection, anti-interference control, cross-system security and data integrity guarantee. Constructing a heterogeneous backup power supply multi-system wireless relay monitoring network; designing a prediction voltage and frequency regulation cooperation strategy based on a Kupman operator, developing a disturbance adaptive back-up power supply smooth switching control mechanism, calculating the voltage deviation and the frequency deviation of the power grid, and constructing a switching instruction vector; and designing an event trigger function for power grid abnormal fault identification, executing a corresponding strategy according to different outputs of the event trigger function, and judging whether switching succeeds or not through a comprehensive quality evaluation index. The invention provides a novel wireless transmission system which can be self-adaptively compatible with multiple protocols, resist strong interference and prevent unauthorized access.

According to the automatic leaky coaxial cable test system based on the wireless relay network, the signal source, the frequency spectrograph, the tracing trolley and the wireless computer are all connected to the same wireless local area network, and the signal source can receive the first control instruction sent by the wireless computer through the wireless local area network. An excitation signal is fed in from one end of the to-be-detected cable according to the first control instruction; the wireless computer can also send a second control instruction to the tracing trolley through the wireless local area network, so that the tracing trolley moves in parallel along the extension direction of the to-be-detected cable according to the second control instruction; according to the invention, a frequency spectrograph and a test antenna can be arranged on the tracing trolley, and the frequency spectrograph is connected with the test antenna, so that the frequency spectrograph can read the real-time signal amplitudes of different leaky coaxial cable positions collected by the test antenna in the moving process of the tracing trolley; and the real-time signal amplitude is sent to a wireless computer through a wireless local area network, so that unattended operation is realized in the leaky coaxial cable testing process.

A framework for message authentication in wireless relay networks, leveraging non-orthogonal multiple access (NOMA) is provided. In this framework, the source transmits the message to the destination through a relay, while the tag is directly sent to the destination. One advantage of our approach is its resilience against integrity attacks. Even if the adversary manages to extract the key from the message and tag pair and generate a valid tag for a modified message, the modification can still be detected at the destination using the tag received directly from the source. To further enhance security, a crypto-physical message authentication scheme that combines cryptographic message authentication with physical-layer message authentication is provided. This fusion of authentication schemes offers synergistic benefits. The authenticated throughput is derived and the performance improvement achieved by the crypto-physical message authentication is assessed compared to solely relying on cryptographic message authentication.