17 results about "Local area network technology" patented technology

The invention discloses a system-on-chip supporting data communication and a data communication method and equipment, and relates to the technical field of controller local area networks. The system comprises a data buffer, a direct memory access controller and a processor; the data buffer is used for generating a starting signal in response to the received first data frame; the direct memory access controller is used for reading a current descriptor in a plurality of descriptors from a descriptor memory area of the memory in response to the starting signal; reading the first data frame from the data buffer area according to the current descriptor, and writing the first data frame into the data buffer area of the memory; in response to the fact that the first interrupt is in the enabled state, generating a first interrupt signal after the first data frame is written into the data buffer area; and the processor is used for reading the first data frame from the data buffer area in response to the first interrupt signal. The system can solve the overflow problem of the data buffer in a high-load scene, reduces the risk of data frame loss, and improves the real-time performance and reliability of the system.

The utility model discloses a local area network technology waterproof switching structure, which is characterized in that two through holes are arranged in an insulator; the outer walls of the two ends of the insulator are sleeved with a first outer guide adapter and a second outer guide adapter respectively, and the insulator is wrapped with the first outer guide adapter and the second outer guide adapter. One end of each central conductor penetrates through the insulator and extends into the second outer conductor adapter; the flange outer conductor body is of a penetrating structure, the first outer conductor adapter and the second outer conductor adapter are installed in the flange outer conductor body, and the two ends of the center conductor can be in butt joint with the outside. Through the application of the utility model, a local area network technology waterproof switching structure is provided, the two ends of the device are respectively in butt joint with the board end connector and the line end connector, the occupied space is saved, the connection modes are diversified, the installation is simple, the maintainability is high, the high-efficiency data transmission can be realized, and the reliability is high. And the method has relatively high standardization and compatibility.

This application discloses a client guidance method, apparatus, device, and medium, relating to the field of wireless local area network (WLAN) technology and applied to a WLAN controller. The method includes: acquiring a probe request frame sent by a wireless client through the current access point; parsing capability information elements in the probe request frame to identify the generation type of the wireless client and the supported link frequency band combinations; the capability information elements include EHT capability elements and multi-link information elements, and the generation type at least includes types supporting multi-link operation and seamless mobility domain; determining a target access point and a guidance strategy for guiding the wireless client to associate with the target access point based on the generation type, link frequency band combinations, and network status information; generating a guidance instruction according to the target access point and the guidance strategy and sending it to the wireless client through the current access point, so that the wireless client can access the target access point according to the guidance instruction. This method can accurately identify the generation type of the client and intelligently guide the client.

The invention belongs to the technical field of data security, and discloses a data security sandbox isolation method, which comprises the following steps of: planning authority distribution of an application program and a user according to a minimum authority principle, and preliminarily isolating communication between a sandbox environment and an external network by applying a hardware virtualization technology and a virtual local area network technology; cleaning the sandbox environment, deploying a real-time monitoring tool, and recording activities and operation logs in the sandbox; performing code auditing on the application program running in the sandbox, monitoring the running behavior of the application program through a dynamic analysis tool, and evaluating the resistance of the sandbox to the escape attack; a container technology and a user-level sandbox technology are used for conducting secondary isolation on the sandbox environment, encryption processing is conducted on data in the sandbox, and the sandbox environment is backed up based on an encryption processing result. Through the hardware virtualization technology, the performance overhead is remarkably reduced, the overall operation efficiency of the system is improved, resource waste is reduced, and efficient utilization of resources is ensured.

The invention discloses a method for ensuring the reliability of multicast transmission, which belongs to the technical field of local area networks, and comprises the following steps: step 1, a sender allocates a globally unique and progressively increasing serial number for each multicast data packet, and adds FEC (Forward Error Correction) redundant code in multicast data; 2, a receiver receives a multicast data packet, records continuous serial numbers through a sliding window, traverses the serial numbers in the sliding window, judges whether the serial numbers are continuous or not, if yes, it is judged that packet loss does not occur, the step 7 is executed, and if not, the step 3 is executed; 3, the receiver identifies redundant packets for receiving the multicast data packets according to the FEC redundant codes, counts the number of the redundant packets and judges whether the number of the redundant packets is larger than or equal to a threshold value or not, if yes, local error correction is carried out to recover data, then the step 7 is executed, and if not, the step 4 is executed. According to the method, the'confirmation storm 'is inhibited fundamentally, and the efficient balance of the network load is realized.

This application provides an interference handling method, apparatus, medium, and device for wireless local area networks (WLANs). The interference handling method includes: in an interference environment of the WLAN, measuring interference index information generated by an interference source against a target device to obtain index measurement results, wherein the index measurement results include interference signal measurement results and experience index measurement results; generating statistical results of interference signal feature values ​​based on the interference signal measurement results; and constructing a simulated environment corresponding to the interference environment based on the interference signal feature values ​​included in the statistical results, so that the experience index measurement values ​​in the simulated environment match the experience index measurement results. The technical solution of this application can recreate the interference environment of a WLAN in a laboratory environment, facilitating the development of WLAN technology and the performance evaluation of WLAN devices within the recreated interference environment.

This application relates to the field of communications technologies, in particular Wireless Local Area Network technologies, and provides a method and apparatus for reducing a peak to average power ratio (PAPR) for transmitting a physical layer protocol data unit (PPDU), in particular reducing the PAPR for the U-SIG field. Methods are disclosed for both an access point (AP) and stations (STA).

The utility model relates to the technical field of vehicle-mounted CAN local area networks, and provides a signal carrier power line transmission isolation system of a vehicle-mounted CAN local area network, the vehicle-mounted CAN local area network comprises one or more CAN node modules used for carrier power line transmission, each CAN node module is connected with a vehicle-mounted direct current power supply through a wire, and the vehicle-mounted direct current power supply is connected with a vehicle-mounted direct current power supply through a wire. The system comprises an external wave trapper which is arranged at the power supply output end of the vehicle-mounted direct current power supply and is used for filtering high-frequency carrier signals at the power supply output end side; and the internal wave trapper is arranged at the power supply output end in each CAN node module and is used for filtering high-frequency carrier signals on the power supply output end side in the corresponding CAN node module. According to the embodiment of the invention, the influence of the CAN node module for carrier power line transmission in the vehicle-mounted CAN local area network on the EMS performance of an external system and other internal functional modules can be reduced or avoided.

The invention provides a data transmission method of a vehicle-mounted terminal system, the vehicle-mounted terminal system and a storage medium, and relates to the technical field of Internet of Vehicles. The vehicle-mounted terminal system provided by the invention comprises a vehicle-mounted communication module, a vehicle-mounted gateway and a plurality of domain controllers, wherein the vehicle-mounted communication module / domain controller carries a configured virtual network number in a sent service data message; the vehicle-mounted gateway receives the service data message from the vehicle-mounted communication module / domain controller and forwards the service data message to a network channel corresponding to the analyzed virtual network number, and different network channels are mutually isolated; and the vehicle-mounted communication module / domain controller receives the service data message forwarded by the vehicle-mounted gateway from the network channel corresponding to the configured virtual network number. According to the vehicle-mounted terminal system, the service data message is transmitted in an isolated mode through the virtual local area network technology, the forwarding logic of the whole vehicle-mounted terminal system is clear and easy to manage through flexible configuration of the virtual network number, and the data transmission efficiency is greatly improved.

This application relates to the field of communications technologies, in particular Wireless Local Area Network technologies, and provides a method and apparatus for reducing a peak to average power ratio (PAPR) for transmitting a physical layer protocol data unit (PPDU), in particular reducing the PAPR for the U-SIG field. Methods are disclosed for both an access point (AP) and stations (STA).

The invention provides a networking type remote control moxibustion box and a control method thereof, the moxibustion box comprises a box body, a combustion chamber assembly arranged in the box body, an ignition system, a state monitoring system and a main control board, the main control board is integrated with a wireless communication module, and the main control board establishes communication connection with a mobile terminal through the wireless communication module. Moxibustion gear selection and ignition control are carried out on the mobile equipment, the use state of each moxibustion box is monitored in real time, the mobile equipment is connected with a plurality of moxibustion boxes, gear setting of one or more moxibustion boxes is carried out after connection is completed, and ignition work of one or more moxibustion boxes is carried out after gear setting is completed. The use states of a plurality of moxibustion boxes are monitored in real time, the wireless local area network technology is innovatively combined with traditional Chinese medicine moxibustion, a wireless module is integrated on a main control board in the moxibustion box, and the moxibustion boxes can be remotely controlled and the states of the moxibustion boxes can be monitored in real time through operation on the mobile equipment in cooperation with the mobile equipment.

Cellular connections can be used to provision non-cellular devices such as internet-of-things (IoT) devices. For example, IoT devices can comprise Bluetooth, Wi-Fi, and cellular capabilities. However, the cellular capability can be used to provision the IoT devices using non-internet protocol data delivery to prevent security vulnerabilities. Data can be transmitted to the IoT device using core elements without using an IP stack. Thus, IoT device configurations and the keys can be provisioned over-the-air without the use of internet protocol data.

Cellular connections can be used to provision non-cellular devices such as internet-of-things (IOT) devices. For example, IoT devices can comprise Bluetooth, Wi-Fi, and cellular capabilities. However, the cellular capability can be used to provision the IoT devices using non-internet protocol data delivery to prevent security vulnerabilities. Data can be transmitted to the IoT device using core elements without using an IP stack. Thus, IoT device configurations and the keys can be provisioned over-the-air without the use of internet protocol data.

The invention provides a two-layer communication method and device, electronic equipment, a storage medium and a computer program product, and relates to the technical field of local area networks, and the method comprises the following steps: receiving first information; wherein the first information comprises a destination local area network address of the destination equipment end; on the basis of the destination local area network address, under the condition that it is determined that communication related information of the destination equipment end is recorded by each network node in the same virtual network group, forwarding the communication related information to the destination equipment end through a second communication gateway on the basis of a 5G link; wherein the first communication gateway and the second communication gateway belong to the same virtual network group. Through the scheme in the embodiment of the invention, the transmission performance of the two-layer communication network can be improved.

The present disclosure relates to the technical field of campus local area networks (LANs), and particularly discloses a method and system for implementing multi-service bearer in a passive optical LAN (POL). The method includes: step S1: constructing a POL, and accessing an entire campus network at a bandwidth of Gigabit according to a point-to-multipoint star topology including three layers: a core layer, a convergence layer, and an access layer, to form a 10 Gbit backbone, wherein an optical network terminal enters a room and is deployed according to such a manner that one classroom or functional room has one terminal mode; step S2: planning and managing the entire POL, defining a plurality of LANs through software definition (SD-LAN), wherein different LANs bear different services; and step S3: allocating different service bandwidths to different LANs through a sharding mechanism of the PON, and the like.

The present application discloses a method, device, system, and electronic device for establishing a communication tunnel. The method comprises: receiving a request message for a target tunnel after network address translation, wherein the request message includes at least a first network identifier, a first user identifier, and a token identifier, the first user identifier being an encrypted user identifier, and the request message being encapsulated in a virtual extended local area network format and transmitted; determining the status information of the target tunnel based on the request message; performing corresponding operations on the request message based on the status information, and sending the operation results to a terminal device after network address translation. The present application solves the technical problem of concurrent bandwidth performance in a communication tunnel between a terminal device and a virtual private network server in conventional technology, and the problem of poor security in a communication tunnel encapsulated using virtual extended local area network technology.

The present application relates to the technical field of wireless local area networks, and particularly provides a channel processing method and a communication device, the method being applied to an AP, the method comprising: receiving first indication information sent by a workstation STA, the first indication information being used for indicating an unavailable channel set, an inclined unused channel set and an inclined used channel set of the STA, the unavailable channel set comprises channels in which a wireless local area network of the STA is interfered by a TN / NTN communication network, and the inclined unused channel set comprises channels in which the wireless local area network of the STA is interfered by the TN / NTN communication network when a preset condition is satisfied. The inclined use channel set comprises channels, which are not interfered by a TN / NTN communication network, of a wireless local area network of the STA; and selecting a target channel of the STA based on the set of propensity unused channels and the set of propensity used channels, the target channel being used for communication of the STA.