71 results about "Local area network technology" patented technology

A method, apparatus and computer program product are provided to permit device discovery to be conducted utilizing a first radio technology, such as Bluetooth Low Energy (LE) technology, and to then handover to a second radio technology, e.g., a second radio technology having a greater bandwidth than the first radio technology. In the context of a method, device discovery is conducted utilizing a first radio technology. The method also causes communication of handover information in accordance with a predefined attribute protocol of the first radio technology. The method also performs handover to a second radio technology, such as Bluetooth technology or a wireless local area network technology, in accordance with the handover information communicated utilizing the first radio technology.

The invention discloses a communication and control system orienting to intelligent power utilization. The communication and control system orienting to intelligent power utilization comprises a core circuit board, a household intelligent socket module and a domestic appliance intelligent remote control module. The core circuit board with a C8051F020 single chip microcomputer as a control core is used for completing communication, control and user interaction function. The household intelligent socket module receives a control command through a WIFI (wireless fidelity) module I for realizing power on-off control, and a metering module acquires instantaneous power and judges operating condition of power equipment. The domestic appliance intelligent remote control module receives a control command sent by the core circuit board through a WIFI module II, and drives an electronic switch for controlling a household appliance remote control. By the aid of 3G (the 3rd generation) communication technology, teletransmission is achieved, by the aid of Web (world wide web) server technology based on the single chip microcomputer, user information interaction is achieved, by the aid of wireless local area network technology based on an Adhoc architecture, information exchanging of the control system and an intelligent socket and a household appliance remote control device is achieved, and the communication and control system orienting to intelligent power utilization is advanced, practical and easy to expand.

The invention discloses a network transmission scheme based on joint of VLC (Visible Light Communication) and WiFi. The following improvements are made on an existing visible light network transmission scheme: a VLC and wireless local area network joint transmission mode is supported; a wireless communication and VLC switching function is provided; signal transmission is controlled and switched through a wireless local area network technology; and high-speed data transmission is performed through a VLC technology. The network transmission scheme comprises the following steps that: when signal quality of a downlink VLC signal declines or data transmission is interrupted due to movement or shielding and the like of a user location, an uplink transmitting-receiving module feeds back detected signal quality to a downlink transmitting-receiving module, and the downlink transmitting-receiving module can switch a downlink signal transmission mode from a VLC way to a wireless local area network way; and when shielding disappears, the VLC way is switched back to perform downlink transmission. Through adoption of the network transmission scheme, indoor wireless communication can be performed by switching between the wireless local area network technology and the VLC technology, so that the performance of indoor wireless communication can be enhanced greatly.

A networking method including receiving, at an edge router of a cloud data center, a virtual private cloud network communication from a private network via a dedicated physical connection line to the edge router. The VPC network communication is forwarded to a gateway hardware group via a first connection using Virtual Extensible Local Area Network technology. The VPC network communication is then forwarded from the gateway hardware group to VPC of a user of the private network via a second connection using VXLAN technology to access a virtual machine.

The invention discloses a method for realizing automatic and smooth switch among various network topology structures and network device thereof; A computer or the network device is connected with a physical-layer chip by a network isolating transformator connecting switch unit; the physical-layer chip processes network signal and sends the signal to a network switching chip connected with the physical-layer chip; the network switching chip is applied to the virtual local-area network technology (VLAN) and is controlled by the control signal of a control unit for carrying out switch among different network topology structures and realizing different network channels formed by a plurality of computers and network devices. The method realizes instant dynamic switch of the different network topology structures and solves the problems that frequent network-cable jumping can easily breakdown the network devices, the abrasion is high, and the service life and working performance of the network devices are affected by the traditional method of group network switch. By applying the physical-layer chip and the switching chip, and combining a control technique of a mono-plate processor, a designing proposal of a digitized circuit which mainly takes an integrated circuit chip as the circuit is formed, a universal network switch is replaced, fund repeatable investment is reduced and the application efficiency is improved.

The invention discloses a data transmission method and equipment, and relates to a WLAN (Wireless Local Area Network) technology. The method comprises the following steps: in the WLAN, an access point (AP) dynamically allocates uplink timeslot and / or downlink timeslot used for data transmission for each STA according to data transmission demands and sends the timeslot information to the corresponding STA; for the uplink timeslot, the AP receives uplink data frames from the corresponding STA when the AP allocates the uplink timeslot to the STA; for the downlink timeslot, the AP sends downlink data frames to the corresponding STA when the AP allocates the downlink timeslot to the STA. The method and the equipment achieve uplink and downlink scheduling, solve the problems of user collision and hidden nodes, ensure the data transmission efficiency, and reduce power consumption and interference among users.

The invention discloses an NVR and IPC port corresponding method comprising the steps that NVRs are connected with multiple IPCs through exchange equipment in a distributed network with the NVRs acting as nodes; explicit numbering is performed on each network port of the exchange equipment, and each numbered network port and different video channels in the NVRs are correspondingly bound in a one-to-one way; and VLAN isolation and identification are performed on each network port of the exchange equipment so as to form an independent connection channel of each IPC to the NVRs, and thus one-to-one correspondence of physical ports and the video channels can be realized. The exchange equipment is ingeniously utilized to provide the actual physical ports, corresponding matching of the logic interfaces of the NVRs is performed with combination of the virtual local area network technology, and a VLAN tag is marked on a transmitted message so that isolation and identification of data transmission can be effectively realized, orderly processing of the NVR ends for multiple receiving video data can be facilitated, and the problems that video data streams are difficult to distinguish in a complex network distribution environment and management is not convenient can be effectively solved.

The invention relates to the network communication field, and especially relates to a distributed node seismometer network communication method. The method includes the following steps: a server is set as a monitoring center, wherein the monitoring center and sink nodes communicate through a wide area network, and multi-hop network communication is established between sense nodes and the sink nodes; in a network initial state, the monitoring center sets up the server and waits for network access applications of the sink nodes and the sense nodes, the sink nodes send the network access applications to the server by utilizing a TCP / IP through LTE links after being powered on, and connection between clients and the server is completed; and the sink nodes, as a gateway connecting the server with the sense nodes, communicate with the sense nodes by utilizing a private network protocol stack through Wi-Fi links. A layered architecture communication network of the wide area network and a multi-hop network is constructed, and a network routing protocol and a data transmission protocol are designed. A multi-hop data forwarding mode helps to overcome a contradiction between a short communication distance in terms of the wireless local area network technology and a low signal coverage rate under complicated geographic conditions in terms of the wireless wide area network technology.

The invention provides a safety access door integrated automatic centralized control system. The safety door centralized control system consists of a front-end control unit, a back-end control unit and a remote control unit. Various different-mode control and management demands are satisfied. The invention further relates to a multifunctional diversified automatic control method and a multifunctional diversified automatic control system based on a branching type, bus type and local area network technologies.

The invention provides a user access control method and a user access control system for a wireless local area network, and relates to a wireless local area network technology. The user access control method for the wireless local area network comprises that: an authentication portal server receives an access point (AP) authentication request initiated by a user terminal; the authentication portal server transmits the related authentication information of the user terminal to an authentication, authorization and accounting (AAA) server by a multi-service edge (MSE) according to the AP authentication request initiated by the user terminal; the AAA server authenticates the user terminal, and transmits an authentication result and preset user level information to an access point (AP) by the MSE; after the user terminal passes the authentication, the AP detects current traffic; and the AP judges whether to permit the accessing of the user terminal according to the current traffic, the user level information and a preset traffic threshold value. By the method and the system, the accurate and differential user access control of the wireless local area network (WLAN) can be effectively realized, the resource utilization rate of the WLAN can be increased and user perception can be improved.

Provided is a wireless postback system of production data of bulk cargo loading and unloading equipment. A plurality of user browsers, a plurality of mobile users, a plurality of bridge APs of a wired network and a wireless network are connected through a server, each AP is connected with a data acquisition device, and each data acquisition device is connected with instruments, including instruments of gantry cranes and instruments of loaders, of the equipment on a wharf. The wireless postback system of the production data of the bulk cargo loading and unloading equipment has the advantages that data acquisition cards are designed, information data acquisition interfaces are unified, and acquisition, storage and postback are carried out on the equipment data; the wireless local area network technology is used for achieving wireless real-time acquisition and transmission of the production data, the real-time performance of the data is improved, and the foundation is laid for real-time monitoring of the equipment and targeted improvement of the equipment data; a data statistics and analysis platform is built, unified storage, unified management and unified analysis of production operation information are achieved, information sharing is achieved, and the platform is provided for work such as data mining in the later period.

The invention relates to a hybrid remote measurement seismic prospecting method. Most basic data acquisition link are constructed by use of data conversion devices and acquisition units, and data transmission on the links employs a wired communication mode. Host computers and data exchange devices form independent network measurement units, and high-speed data communication between the host computers and the data conversion devices is realized by use of local area networks in the network measurement units. The host computers and a master control computer form networks by use of a 4G technology, and the master control computer can realize control of the acquisition units and real-time recovery of acquisition data. According to the invention, the hybrid remote measurement seismic prospecting method is formed by making full use of advantages of such communication technologies as the 4G network technology, a local area network technology and a wired communication technology in the acquisition links, such that the working efficiency is improved and the field construction cost is reduced under the condition that the real-time monitoring requirement for seismic prospecting data is satisfied.

The invention relates to an internetworking technology, a computer information technology and a liquid crystal display technology. A plurality of deposit browsers, a microreader, a server, a superior machine and database and the like adopt a local area network technology to form a receipt and payment station. The superior machines of each receipt and payment station are connected with a router on an Internet by a discriminating machine so as to construct a unit special wide area network which is secure and reliable and is deposited and charged by a computer. A display label has easy manufacture, low cost and long service life and can be used repeatedly. The electronic charging system can be supplied again when being lost, and the microreader plays roles of electronic charging with convenient and high efficiency. The online payment and electronic payment of the electronic charging system are secure, and both two methods can avoid deceivers from deceiving.

The invention relates to a control display and network system substituting an integrated circuit card. A plurality of service browsers, a cashier dispenser, a network charger, an optimal computer and a database server and the like of certain network unit form a service station by adopting local area network technology. The optimal computer of each service station is connected with a router in the internet by a distinguishing computer to form a safe and reliable special service wide area network. The control display is provided with a microprocessor and a memory and is equipped with input keys and miniature liquid crystal display and the like. The invention needs to be online for information processing and does not need to be online for authorization, and can substitute the existing various IC cards. The invention can substitute the control display of a bank for realizing 'paperless transaction' and 'cashier flow reduction'. The network charger is equipped with the microprocessor for identifying and controlling software, the memory, a read-write device and a display and the like. The network charger adopts bar code technology, and the invention can be applied to the fields of retail trade, manufacturer, financial insurance, book management and warehouse automation management and the like.

The invention discloses a wearable physiological parameter collecting device based on WIFI communication. The device comprises a power supply management module, a physiological parameter collecting module, a WIFI communication module and a processor module. The device is small in size, light in weight, convenient to carry, high in mobility and good in comfort, device cost is low, compared with a traditional physiological parameter collecting device, the device does not have an expensive displaying screen, parameter information is displayed through an intelligent mobile terminal, a hardware part of the device is low in cost, anti-interference ability is high, network connecting is stable and reliable, data transmission error correcting capability is high, through a wireless local area network technology, device data transmission speed is fast, device using is convenient, monitoring information is stable and reliable, the using range is wide, and limitation of time and territory is avoided.

The invention provides an inverter system communication networking method. An inverter system comprises one or a plurality of photovoltaic assemblies, one or a plurality of inverters correspondingly connected with the photovoltaic assemblies, a communicator, a server and grid ports. Each inverter is connected with a bus cable to be connected with an alternating current power grid through a grid port. One end of the communicator is connected with the one or the plurality of inverters through a wireless personal local area network technology, and the other end of the communicator is connected with the server through the Internet. The communication networking method mainly includes that the communicator informs one or the plurality of inverters to modify personal area network identifiers of the inverters to be a personal area network identifier of the communicator, and the communicator reads short addresses of the inverters. The method can be used in the system with the single photovoltaic inverter or the plurality of photovoltaic inverters, achieves networking operation conveniently, reduces the system networking time and removes mutual interference between the devices and between the systems.

The invention relates to a wireless local area network, indoor positioning, the information collection and processing technology and the signal strength technology, in particular to the wireless local area network technology for the indoor positioning. The wireless local area network is widely applied to indoor environments and hot spots where people perform activities due to characteristics of high communication speed and simple deployment. Compared with the outdoor positioning, the requirement of the indoor positioning for positioning precision is higher. Furthermore, lots of interference factors such as various walls, partition walls, people or furnishings existing in the indoor space can affect transmission of wireless signals, such as attenuation, reflection, scattering, multipath effect and the like of the wireless signals. The wireless local area network technology for the indoor positioning based on the WIFI seamless positioning technology is used for providing network security of the wireless local area network for enterprise-class users. WIFI can have functions of achieving wireless access and transmitting data and be used for the indoor positioning. On the basis of having no need for additional hardware, the WIFI network can analyze signal strength or signal to noise ratio of a wireless network device to infer the position of a target object.

The invention discloses a method and a device for controlling packet sending rate of a user, which relates to the technical field of communication and is invented to ensure the lowest packet sending rate of the user. The method comprises the following steps: user access is controlled according to the user access strategy, and a packet is scheduled according to the packet scheduling strategy; when a new user requests accessing, whether the average packet sending rate of the users of the whole network is smaller than or equal to a preset rate threshold value is judged; if so, the accessing of the new user is rejected; if not, the new user is accessed; when the packet is received, the former packet sending rate of the user owing the packet is obtained; and when the former packet sending rate of the user owing the packet is smaller than or equal to the preset rate threshold value, the packet is a first packet, and the first packet is added in a queue. The method and the device are mainly applied to the wireless local area network technology.

The invention discloses a wearable physiological parameter collecting device, which comprises a power management module, a physiological parameter collecting module, a bluetooth wireless transmission module and a processor module, wherein the power management module comprises a 5V voltage conversion circuit and a 3.3V voltage conversion circuit; the physiological parameter collecting module comprises a human body temperature collecting unit, and an oxyhemoglobin saturation and pulse parameter collecting unit. The device is small in volume and quality, convenient to carry and strong in mobility, has well comfortableness, is strong in network interference resistance, stable and reliable in network connection, and strong in data transmission correction capability, and is more flexible in networking by means of a wireless local area network technology, convenient to use, stable and reliable in monitoring information, wide in usable range, and not limited by time and region; various human body physiological parameters can be collected in real time, and the parameters are transmitted to a host through a bluetooth technology at a short range to carry out interaction.

The invention provides a ground system of satellite communication. The system comprises a terminal subsystem, a gateway station subsystem, and a network management subsystem; the terminal subsystem performs network configuration by adopting a virtual local area network technology and comprises multiple communication terminals; the gateway station subsystem performs network configuration by using QinQ network technology so as to conveniently receive and send data packets from communication terminals, and the data packets of the communication terminals are transmitted through the satellite; thenetwork management subsystem is configured to execute a network management operation on the satellite communication ground system. Through the satellite communication ground system provided by the invention, the satellite user networks can be greatly increased and the mutual interference is avoided through the VLAN and the QinQ technology along the increasing the amount of the satellite user.

The invention provides multiple network switching authentication methods, wherein one network switching authentication method is executed by user equipment, and applicable to switching from a cellularnetwork wireless access technology to a wireless local area network technology. The network switching authentication method comprises the steps of starting an authentication process of the wireless local area network technology; during an authentication process period of the wireless local area network technology, monitoring signal quality of the wireless local area network technology; accordingto the monitored signal quality of the wireless local area network technology, judging whether to interrupt the authentication process of the wireless local area network technology; and when the signal quality of the wireless local area network technology indicates that the switching is not suitable for being continuously performed, interrupting the authentication process of the wireless local area network technology. The network switching authentication method has the advantage that during a network switching process in interaction work between the cellular radio access technology and the wireless local area network technology, when the signal quality of the wireless local area network is not good, the authentication process of the wireless local area network can be interrupted in time, and the waste of time and resources can be reduced.

The invention relates to an underground location and dynamic intelligent supervision system based on the CAN and Zigbee technology. The invention provides an underground personnel location system which is simple in structure, small in size, light in weight, low in cost, long in service life and high in reliability and has perfect performances. The system comprises a client, a server, a local area network, a monitoring base station, an information allocation module, an alarm output module, a data processing module, a data transmission module, a commercial database, a real-time data display module, a historical data query module and an emergency processing module. An underground wireless communication scheme employs the infrared local area network technology for near field communication; the frequency hopping technology receives a signal under the condition of synchronization and simultaneousness; the direct sequence spread spectrum converts the original signal into a broadband signal for performing communication in a broadband manner. By using the multiple system combination technology, various underground special communication systems are established in a shared-network manner. The OOP technology is used for programming and the MMI developing interface is used, and, based on the concept of modularized programming, repeated development of programs is prevented. The system has the functions of real-time counting of underground personnel, real-time report of the gas density, report of the temperature and humidity and report of the environmental parameters, accident rescue and video frequency real-time monitoring and location.

The invention discloses a channel self-adapting method, apparatus and system of a wireless switch, relates to the wireless local area network technology field. The invention is to solve the problem of the prior art that a plurality of APs work in a same frequency and interference is easy to generate. The channel self-adapting method of the wireless switch comprises: computing power values of coupling signals received via various channels; comparing the power values and selecting a channel corresponding to a minimum power as a work channel. The channel self-adapting method, apparatus and system of the wireless switch in the invention, improve the efficiency of wireless network signal transmission by automatically selecting the channel having the minimum power of the coupling signal.

The invention discloses a mining lamp charging cabinet communication system based on a computer local area network technology. The communication system comprises a mining lamp room data server, a master switch and 1#-n# mining lamp charging cabinets, an independent secondary switch and a computer host are arranged on each of the 1#-n# mining lamp charging cabinets separately, the computer local area network technology is adopted for connection in a data connection mode of the mining lamp charging cabinet communication system, the mining lamp room data server is in data connection with the master switch, the master switch is in data connection with the secondary switches on the 1#-n# mining lamp charging cabinets, the secondary switches on the 1#-n# mining lamp charging cabinets are in data connection with one another, and accordingly a data connection loop is formed. The computer local area network technology of wireless or wired connection is adopted in the communication system, and the communication system is different from existing mining lamp charging cabinet communication mode schemes, mature in technology, rapid in network communication and beneficial to maintenance.

The invention relates to a local area network technology, and provides a virtual private local area network service (VPLS) message processing method and equipment. The processing method and the equipment solve the problem that a tag carried in the existing transmission message is abandoned if inconsistent with an affiliated VLAN (Virtual Local Area Network) of a port in a boundary router of a service provider. The processing method adopts the technical scheme that the method comprises the steps that CE (Customer Edge) equipment is connected into PE (Provider Edge) equipment to select a VPLS; the PE equipment configures and binds a VPLS example at a third-layer port of the PE equipment; whether a connection mode is an Ethernet port is judged; if so, the port number of a physical port receiving data of the CE equipment is enquired; the port is set as a QinQ mode; when the PE equipment receives a message, a tag is added at the second-layer head of the message; the value of the tag is a VLAN ID (Identity) corresponding to the port number; and the message is transmitted by a VPLS data forwarding module. The processing method and the equipment have the benefits that an effect of unvarnished data transmission is achieved, and the processing method and the equipment are suitable for a virtual private local area network.

The invention relates to an oil field video monitoring system based on WiFi and a using method thereof. The system comprises terminal equipment, a wireless network, a client and a handhold terminal. The terminal acquires monitoring information and alarm information and transmits to the rear equipment through the wireless network; the client server acquires monitoring information from the rear equipment, client software controls the terminal equipment to operate directly through network signals, and the wireless network is established through a wireless bridge. The monitoring system is on the basis of the WiFi wireless broadband local area network technology, the terminal equipment can be monitored in real time through the client according to the IP address on the background; when a monitored point is in fire, alarm signals are sent to the client and handhold terminal; the wireless local area network is arranged by the wireless bridge technology, wiring can be reduced, monitoring points can be increased and decreased conveniently, the situation that no 3G signals cover oil field in field is overcome, the network is established conveniently, and the effect is significant.

The invention discloses a smart mine lamp charging rack communication system adopting a computer local area network structure. The system comprises a smart mine lamp charging rack, a mine lamp room data server, a primary switch, a sub-switch and a host computer; a computer local area network technology is adopted for connecting various parts; the mine lamp room data server is connected with the primary switch through a connection medium; the primary switch is connected from the sub-switch of a 1# charging cabinet to the sub-switch of an N# charging cabinet through connection media, so as to form a connection loop.

The application relates to an automatic monitoring system for crop planting based on a monitoring device. The automatic monitoring system for crop planting based on the monitoring device includes themonitoring device, a monitoring gateway, a monitoring server and a response device. The monitoring device is arranged in a monitored area where crops are planted and is used for acquiring environmentdata of the monitored area and sending the environment data to the monitoring gateway through local area network technology. The monitoring gateway sends the received environment data to the monitoring server in a wired or wireless manner. The monitoring server processes the received environment data and generates and sends data control instruction to the monitoring device. The monitoring device controls the response device to work so as to regulate the environment of the monitored area. By connecting the monitoring device and a sensor, the layout cost is low and the system has strong extensibility, and moreover, interconnection between agriculture and the Internet of things is realized.