Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
31 results about "Cdma wireless networks" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
CDMA and GSM are the two radio networks used by wireless carriers and present in cell phones. CDMA and GSM only use 3G technology, so the discussion is really a 3G one.
Wireless narrowband network video transmission method
InactiveCN101527834ASmooth jitter phenomenonEasy to usePulse modulation television signal transmissionError preventionData streamTime delays
The invention discloses a wireless narrowband network video transmission method. The method comprises code stream analytical control, network detection state control and network transmission. The method utilizes the data separation of I frame and P frame, according to the characteristic property of MPEG4 video format, optimizes the transmission of video stream in a CDMA wireless network through data stream management, buffer management and reasonable frame-dropping strategy, so as to achieve the dithering phenomenon of smooth network, ensure least time delay of transmission and obtain uniform and continuous previewed video images.
Owner:ZHEJIANG DAHUA TECH CO LTD
Voice service implementation method, voice fall back implementation terminal and system thereof
InactiveCN103108402ASolve the problem of falling back more difficultReduce complexityConnection managementService implementationComputer terminal
The invention discloses a voice service implementation method, a voice fall back implementation terminal and a system thereof. The voice service implementation method includes the following steps: a terminal sends a voice service request to a core network through an LTE wireless network; the terminal enables the voice service to fall back to a CDMA wireless network from the LTE wireless network according to a set control mode; and the terminal implements the voice service through the CDMA wireless network and the core network. According to the voice service implementation method, the problem that the terminal has difficulty in implementing fall back of the voice service in a networking scene of the LTE wireless network and the CDMA wireless network is resolved, complexity for the terminal to implement the voice service in the networking scene is reduced by adopting the mode, and time delay is decreased.
Owner:ZTE CORP
Sensing network system for monitoring vehicle-mounted hazardous article and monitoring method
InactiveCN101325511AImprove monitoring reliabilityReduce labor intensityTransmission systemsClosed circuit television systemsWireless transmissionControl signal
The invention relates to a vehicle mounted dangerous articles control sensor network system, including: a dangerous articles detection sensor, installed around dangerous articles; a video acquisition device, installed above the dangerous articles, for acquiring and outputting video signals; a display screen, connected with the video acquisition device, for receiving video signals output from the video acquisition device; a wire transmission module, connected with the video acquisition device and the display screen, for transmitting the video signals from the video acquisition device onto the display screen; a signal processing module, for receiving analog induction signals and outputting digital sensing signals; a wireless transmission module, connected with the signal processing module, for transmitting outside in a wireless mode; a central control module, for receiving the digital sensing signals and determining to output control signals when the digital sensing signals represent the occurrence of dangerous articles and heterogeneous; a short message alarm module, connected to the central control module, transmitting alarming short messages to mobile phone of appointed users in a short message mode; a audible alarm module, connected to the central control module, for receiving the control signals transmitted from the central control module through a CDMA wireless network; a GPS locating module, installed on vehicles transporting dangerous articles, for reporting the accuracy position of vehicles toward control center in real time. The invention also provides a monitoring method, which effectively reduces work intensity of staff, improves reliability of vehicle mounted dangerous articles carriage, and can reduce false dismissal rate and false alarm rate.
Owner:JIAXING WIRELESS SENSOR NETWORKS CENT CAS
Monitoring system for monitoring fluid transmission pipe by prior wireless network
The invention provides a monitoring system for monitoring a fluid transmission pipeline by using an existing wireless network, which essentially consists of five parts of a flux collecting unit (FCU), a data transmitting and receiving unit (DTRU), an operation maintenance center (OMC), a power supply module (PSM), and a GSM or CDMA wireless network. The FCU is installed on the surfaces of various liquid transmission pipelines and essentially aims at collecting the flux of the liquid flowing inside a petroleum transmission pipeline accurately and sending the flux value collected to the GSM or CDMA wireless network through wireless radio-frequency signals after the flux value is modulated and packed. The key function of the PSM is to supply power for the FCU. The DTRU transmits the flux data collected to the existing GSM or CDMA wireless network, and simultaneously receives the monitoring data and orders transmitted from the GSM or CDMA wireless network to form a transmission route between the FCU and the OMC through the GSM or CDMA wireless network. The key function of the OMC is to monitor and manage the transmission situation inside the whole liquid transmission pipeline. The OMC carries out centralized and uniform treatment mainly according to the data information collected by the FCU to monitor the working situations and flux of all the pipelines, carries out statistic and calculation for the data, gives corresponding visual warning and video alarm when leakage occurs to the pipelines and notifies corresponding responsible persons the corresponding positions and situations of the pipeline for carrying out treatment through the GSM or CDMA wireless network by short messages.
Owner:SHENZHEN CARVE ELECTRONICS
Industrial equipment operation monitoring system based on IoT (Internet of Things)
InactiveCN103313036ARealize Simultaneous MonitoringRealize monitoring and managementData switching by path configurationClosed circuit television systemsGeneral Packet Radio ServiceIndustrial equipment
The invention discloses an industrial equipment operation monitoring system based on the IoT (Internet of Things). The system comprises work condition monitoring equipment, a switch group, a central monitoring platform, a plurality of user mobile control terminals and a display, wherein a GPRS / CDMA (General Packet Radio Service / Code Division Multiple Access) wireless network communication module and a video output module are arranged in the central monitoring platform, the GPRS / CDMA wireless network communication module of the central monitoring platform is in communication with the user mobile control terminals through a network, and the central monitoring platform is connected with the display through the video output module. The industrial equipment operation monitoring system based on the IoT has the beneficial effects that the simultaneous monitoring on the user mobile control terminals and the central monitoring platform is realized through the wireless network communication module, the user mobile control terminals and managerial staff of the central monitoring platform can be notified of real-time equipment operation state, and the real-time equipment operation state is displayed, so that the networked monitoring and management are realized.
Owner:GUANGDONG XUNTONG TECH
Power consumer electricity consumption information acquisition system based on cloud service
InactiveCN102790805AEnsure safetyIntegrity guaranteedElectric signal transmission systemsTransmissionGeneral Packet Radio ServiceElectric power
The invention relates to a power consumer electricity consumption information acquisition and management system, in particular to the power consumer electricity consumption information acquisition system based on cloud service. The information acquisition system is characterized in that the system comprises a cloud server and a cloud terminal connected in a wireless manner and a wired manner at the same time, and the cloud terminal is connected with a management main station system of a power grid to be communicated with the main station system; and a GPRS (general packet radio service) / CDMA (code division multiple access) wireless network manner is adopted as the wireless manner, and a power line carrier signaling manner, or a direct connection through a network cable or an optical cable is adopted as the wired manner. According to the information acquisition system, a network is utilized to be communicated with an acquisition terminal, a concentrator and the like, and safety and integrity of data transmission can be guaranteed. Data of power consumer electricity consumption is saved in a cloud server instead of being saved in the acquisition terminal and the concentrator. The setting of a terminal parameter is directly released to the terminal by the cloud server, and thus the parameter setting is more convenient. Operations executed by the terminal are directly operated on the cloud server instead of being released to the terminal.
Owner:宁夏隆基宁光仪表股份有限公司
Apparatus and method for implementing data safety transmission of mobile communication apparatus
ActiveCN1688171AFlexible and convenient to useWill not affect the useUser identity/authority verificationRadio/inductive link selection arrangementsCircuit Switched DataData compression
This invention discloses a safety transmitting device and a method for mobile communication devices. Said device can be connected on radio mobile communication devices of GSM or CDMA network detachably via their interface units including seven parts: a master control unit, a CODEC unit, a data compression code / decode unit, an asymmetrical ciphering unit, a symmetrical ciphering unit, a power supply unit and an interface unit. Said device utilizes the current GSM or CDMA network to carry out identity certification and session cryptographic key transfered by the improved PK1 asymmetric ciphered code system without CA and ciphers the data by session cryptographic key to be transmitted by the circuit exchange data service supported by network and carries out inverse process at the receive end to realize end-to end cipher communication function.
Owner:GUANGZHOU SPACEFLIGHT HAITE SYST ENG
System and method for wireless network selection by multi-mode devices
Systems and methods are provided for wireless network selection by multi-mode devices. A mobile device maintains an indication of any wireless network services currently provided to the mobile device. According to an embodiment of the application, the mobile device automatically scans for both GSM wireless networks and CDMA wireless networks in order to acquire a wireless network that can providea service that is not currently provided to the mobile device. Therefore, the mobile device avoids partial service or limited service when better service is available.
Owner:RES IN MOTION LTD
Wireless network communication real-time monitoring system and monitoring method
InactiveCN104902235AImprove accuracyImprove reliabilityClosed circuit television systemsGeneral Packet Radio ServiceVideo monitoring
The invention provides a wireless network communication real-time monitoring system and monitoring method, which adopt a manner of general packet radio service (GPRS) or code division multiple access (CDMA) wireless network combination, so that the communication cost can be lowered effectively, in addition, long-distance remote video monitoring can be realized, video information is processed through a packaging mechanism, a channel coding mechanism and an error recovery mechanism, the correct rate and reliability of video transmission are effectively improved, and monitoring faults are not easy to occur; every video acquisition sub-terminal can adopt a relay transmission manner, information collected by remote video acquisition sub-terminals is transmitted to near video acquisition sub-terminals, and the collected information is sent out by the near video acquisition sub-terminals, so that the distance of remote monitoring is effectively extended; in addition, a global positioning system (GPS) and a global system for mobile communications (GSM) short message module are adopted, thereby ensuring that immediate location at the first moment is performed and monitors are warned once monitoring information becomes abnormal.
Owner:STATE GRID SHANDONG LINQU POWER SUPPLY +2
System and method for monitoring geographical position of stolen mobile phone
InactiveCN101316386ATelephonic communicationRadio/inductive link selection arrangementsTransceiverGeolocation
The invention discloses a system and a method for monitoring the geographical location of a stolen mobile phone. The system of the invention comprises a user mobile phone, a short message gateway and a location server which are connected in sequence, and the short message gateway is connected with a monitored mobile phone. The user mobile phone comprises a processor and a memory, a transceiver, a GPS module and a short message receiving and sending module which are respectively connected with the processor, wherein, the transceiver is connected with an antenna and the short message receiving and sending module sends a message which contains location information to the short message gateway; the short message gateway is connected with the user mobile phone and the monitored mobile phone through a GSM or CDMA wireless network; the transceiver contains a wireless signal of information on the number of a base station by the antenna. The method of the invention includes that an anti-theft option for the selection and use of the user is arranged in a function menu of the user mobile phone and the anti-theft option contains the arrangement method for initiating the anti-theft function for the first time and the method for automatically initiating the anti-theft function for the follow-up for the user. No matter whether the stolen mobile phone has the GPS function or not, the system and the method can help the owner of the lost mobile phone obtain the position of the lost mobile phone so as to provide an effective way for retrieving the stolen mobile phone to the owner.
Owner:天津华永无线科技有限公司 +1
System and method for wireless network selection by multi-mode devices
Owner:BLACKBERRY LTD
GPRS/CDMA based automatic safe monitoring system for tower crane
InactiveCN101211183AReduce use of safety accidentsReduce safety incidentsData switching by path configurationTotal factory controlMonitoring systemEngineering
The invention relates to a tower crane monitoring system, in particular to an automatic tower crane monitoring system based on GPRS / CDMA, which comprises a tower crane side function control console (1) and a control room side control console (3), wherein the tower crane side function control console (1) is wirelessly connected with the control room side control console (3) via a GPRS / CDMA wireless network (2). The invention has the advantages of reducing the possibility of security incidents in the operation of the tower crane, improving the operation safety of the operation of the tower crane, and fulfilling requirements of users on the operation of the tower crane; in addition, the operation of the tower crane is safer, more stable and more effective.
Owner:DALIAN MARITIME UNIVERSITY +1
CDMA (code division multiple access) wireless streetlamp monitoring system
InactiveCN102148872AEfficient managementEffective maintenanceEnergy efficient ICTElectric light circuit arrangementWireless controlSystem capacity
The invention relates to a CDMA (code division multiple access) wireless streetlamp monitoring system, which comprises a plurality of remote streetlamp measuring and controlling terminals, a wireless communication network platform, and a plurality of monitoring platforms used for remotely monitoring the remote streetlamp measuring and controlling terminals, and a management server which stores the real time data collected by each monitoring point in real time; a CDMA network platform and an internet access service platform connected with the CDMA network platform are arranged on the wireless communication network platform; the management server and the internet access service platform are connected by a wired network; and the monitoring platforms implement data communications with the remote streetlamp measuring and controlling terminals through the CDMA network platform. When a failure occurs to the device, the location and state of the failure can be known timely; moreover, the failure can be troubleshot timely; the time for reaching the maintaining place is shortened; the troubleshooting efficiency is improved; the manpower is reduced, and the maintaining cost is reduced. Moreover, the CDMA (code division multiple access) wireless streetlamp monitoring system has the advantages of large system capacity, real-time and energy-saving communication, wireless control, and open information management.
Owner:苏州柏奥通信科技有限公司
System and method for reallocating a traffic channel in soft handoff state
InactiveUS20060039323A1Resonant long antennasData switching by path configurationTransceiverMobile station
There is disclosed, for use in a CDMA wireless network, a channel resource allocator for reallocating a data traffic channel in a soft handoff state to handle incoming calls from new mobile stations. The channel resource allocator includes an overhead channel controller for reconfiguring a data traffic channel as an overhead channel upon failure of an overhead channel element in a base transceiver station (BTS). The channel resource allocator determines if all data traffic channels of the BTS are in use. If so, the channel resource allocator determines whether any of the existing calls being serviced by the data traffic channels are in a soft handoff state in which the call is connected simultaneously to, two or more base transceiver stations. If so, the channel resource allocator drops the connection to the BTS in which the overhead channel failure occurred, thereby freeing up the data traffic channel. The overhead channel controller may then reconfigure the dropped data. traffic channel as an overhead channel, or the channel resource allocator may reallocate the dropped data traffic channel to handle a new incoming call from a mobile station.
Owner:SAMSUNG ELECTRONICS CO LTD
Systems and methods for controlling audible speech distortion in a GPS-based CDMA wireless network using ATM transport
InactiveUS6898212B1Reduce generationRelaxes accuracy requirementTime-division multiplexRadio transmission for post communicationTemporal informationRadio networks
A Base Station Controller (BSC) that reduces the occurrence of audible noise in a Code Division Multiple Access (CDMA) radio network is provided. The BSC according to one embodiment of the present invention comprises a Media Stream Board (MSB) for compressing groups of 160 PCM speech samples from a Public Switch Telephone Network (PSTN) into vocoded frames, and a Special Purpose Board (SPB) for reformatting the vocoded frames from the MSB into over-the-air CDMA vocoded frames. The MSB and SPB each have a local timer that is slave to “PSTN time”. The BSC further comprises a Timing Unit Board (TUB) connected to a GPS receiver. The TUB receives “GPS time” from the GPS receiver. The TUB generates timing cells, each containing time-of-day information according to “GPS time”. The TUB distributes the timing cells to the MSB and the SPB over an Asynchronous Transfer Mode (ATM) network. The MSB and SPB use the received timing cells to compare their local timer, which tracks “PSTN time”, to “GPS time”. The MSB and the SPB realign their local timer with “GPS time” whenever their local timer drifts from “GPS time” outside of a predetermined time window.
Owner:TELEFON AB LM ERICSSON (PUBL)
Method for statistic of mobile communication network blind area of coverage
ActiveCN1921677AReflect the coverage status of blind spotsEasy to implementRadio/inductive link selection arrangementsNetwork data managementTD-SCDMAApplication areas
The invention relates to a method used in the covered blind area statistic of mobile communication network. Wherein, it uses the timed register statistic data collected by base station OMC and the activated user statistic number of exchanger VLR, to evaluate the cover blind area of wireless network; based on the register period, the activated user number in some time collected by VLR, calculating the theory received timed register total number of base station at said time; then comparing it with real received timed register total number, to obtain the cover blind area ratio at said time. The invention can be used in CDMA wireless network, as well as GSM and TD-SCDMA wireless mobile communication network.
Owner:ZTE CORP
Smart bracelet capable of monitoring human body condition in real time
The invention relates to the technical field of smart bracelets, in particular to a smart bracelet capable of monitoring a human body condition in real time. A button assembly is arranged in a face shell assembly; a USB (Universal Serial Bus) small board is arranged in the face shell assembly on one side of the button assembly; the upper end of the button assembly is further provided with an RFID (Radio Frequency Identification Device) tag; one side of the face shell assembly is further provided with a button FPC (Flexible Circuit Board); a bracket is arranged inside the face shell assembly; the upper end of the bracket is provided with a battery and a motor; both sides of the bracket are further provided with antenna thimbles; a motherboard assembly is arranged on the upper side of the battery; a heartrate FPC and a heartrate lens are arranged on the motherboard assembly; the heartrate lens is connected to the heartrate FPC; an SIM (Subscriber Identity Module) card cover is further arranged inside a bottom shell assembly; an SIM card cover waterproof ring is hermetically arranged on the outer side of the SIM card cover. By adopting the smart bracelet, the blood pressure and heartbeat parameters of a human body can be acquired at any time and monitored in real time, the monitored parameters are transmitted to a terminal for controlling the smart bracelet through a GSM / CDMA (Global System for Mobile Communications / Code Division Multiple Access) wireless network at the same time, and the physical condition of a wearer can be known at any time.
Owner:河南天翎科技有限公司
Systems and methods for controlling audible speech distortion in a GPS-based CDMA wireless network using ATM transport
InactiveCN1486552AReduce audible noiseReduce hardware costsTime-division multiplexRadio transmission for post communicationRadio networksGps receiver
A Base Station Controller (BSC) that reduces the occurrence of audible noise in a Code Division Multiple Access (CDMA) radio network is provided. The BSC according to one embodiment of the present invention comprises a Media Stream Board (MSB) for compressing groups of 160 PCM speech samples from a Public Switch Telephone Network (PSTN) into vocoded frames, and a Special Purpose Board (SPB) for reformatting the vocoded frames from the MSB into over-the-air CDMA vocoded frames. The MSB and SPB each have a local timer that is slave to 'PSTN time'. The BSC further comprises a Timing Unit Board (TUB) connected to a GPS receiver. The TUB receives 'GPS time' from the GPS receiver. The TUB generates timing cells, each containing time-of-day information according 'GPS time'. The TUB distributes the timing cells to the MSB and SPB over an Asynchronous Transfer Mode (ATM) network. The MSB and SPB use the received timing cells to compare their local timer, which tracks 'PSTN time', to 'GPS time'. The MSB and the SPB realign their local timer with 'GPS time' whenever their local timer drifts from 'GPS time' outside of a predetermined time window.
Owner:TELEFON AB LM ERICSSON (PUBL)
Unified architecture for CDMA network and method of operation
InactiveUS7151760B2Power managementTransmission control/equalisingIndependent functionWireless traffic
There is disclosed, for use in a CDMA wireless network, a partitioned selection and distribution unit (SDU). The partitioned SDU comprises a first controller located in at least one base station of the CDMA wireless network for performing radio dependent functions, wherein the radio dependent functions are related to the transfer of wireless traffic between base stations and mobile stations in the CDMA wireless network. The partitioned SDU also comprises a second controller located in the mobile switching center of the CDMA wireless network for performing radio independent functions, wherein the radio independent functions are related to the transfer of voice traffic, data traffic, and / or signaling traffic between the CDMA wireless network and a wired network coupled to the CDMA wireless network.
Owner:SAMSUNG ELECTRONICS CO LTD
Compatible method for accessing wireless packet data service call with different service types
InactiveCN101553040ASmooth connectionSolve the problem of coexistence but incompatibilityConnection managementCdma wireless networksBase station
The invention provides a compatible method for accessing a wireless packet data service call with different service types. A base station controller BSC transmits a wireless packet data service call to a packet control function PCF entity, the wireless packet data service call carries service type marks, and the PCF entity transmits the wireless packet data service call to a packet data service node PDSN of the service types to treat according to the service type marks. The method enables 1x service and EV-DO service in a code division multiple access CDMA wireless network to be smoothly connected to the PDSN which can support the service and solves the problems of coexistence and incompatibility of the PDSN for supporting the 1x service and the PDSN for supporting the EV-DO service in commercial environment, and the 1x service and the EV-DO service can not be mutually influenced.
Owner:ZTE CORP
Compatible method for accessing wireless packet data service call with different service types
InactiveCN101553040BSmooth connectionSolve the problem of coexistence but incompatibilityConnection managementComputer scienceCdma wireless networks
The invention provides a compatible method for accessing a wireless packet data service call with different service types. A base station controller BSC transmits a wireless packet data service call to a packet control function PCF entity, the wireless packet data service call carries service type marks, and the PCF entity transmits the wireless packet data service call to a packet data service node PDSN of the service types to treat according to the service type marks. The method enables 1x service and EV-DO service in a code division multiple access CDMA wireless network to be smoothly connected to the PDSN which can support the service and solves the problems of coexistence and incompatibility of the PDSN for supporting the 1x service and the PDSN for supporting the EV-DO service in commercial environment, and the 1x service and the EV-DO service can not be mutually influenced.
Owner:ZTE CORP
GPS-based vehicle positioning monitoring device
InactiveCN105844944APrecise positioningFast transmissionRoad vehicles traffic controlSatellite radio beaconingInformation processingInformation transmission
The invention discloses a GPS-based vehicle positioning monitoring device, which includes a monitoring terminal and a monitoring center. The monitoring terminal includes a GPS unit, a processor, a CDMA unit, a storage unit, a reset unit, an operating unit and a power supply. The monitoring center It includes a CDMA wireless gateway, a monitoring manager, a processing server, a database server and an operation console. Among them, the monitoring terminal accurately positions the vehicle through the GPS satellite network, and transmits the positioning information of the vehicle to the monitoring center in real time through the CDMA wireless network, so that the monitoring center can Display and query various information of vehicles on the electronic map with geographic information processing and query functions, real-time positioning and monitoring of vehicle running status, which solves the problems of poor positioning accuracy and untimely transmission of positioning information commonly found in current vehicle positioning monitoring devices.
Owner:成都谷辘信息技术有限公司
System and method for wireless network selection by multi-mode devices
ActiveCN101669391BAssess restrictionWireless commuication servicesWireless network codingLimited service
Systems and methods are provided for wireless network selection by multi-mode devices. A mobile device maintains an indication of any wireless network services currently provided to the mobile device. According to an embodiment of the application, the mobile device automatically scans for both GSM wireless networks and CDMA wireless networks in order to acquire a wireless network that can provide a service that is not currently provided to the mobile device. Therefore, the mobile device avoids partial service or limited service when better service is available.
Owner:RES IN MOTION LTD
Apparatus and method for implementing data safety transmission of mobile communication apparatus
ActiveCN100367701CConvenient and flexible useWill not affect the useUser identity/authority verificationRadio/inductive link selection arrangementsData compressionComputer hardware
This invention discloses a safety transmitting device and a method for mobile communication devices. Said device can be connected on radio mobile communication devices of GSM or CDMA network detachably via their interface units including seven parts: a master control unit, a CODEC unit, a data compression code / decode unit, an asymmetrical ciphering unit, a symmetrical ciphering unit, a power supply unit and an interface unit. Said device utilizes the current GSM or CDMA network to carry out identity certification and session cryptographic key transfered by the improved PK1 asymmetric ciphered code system without CA and ciphers the data by session cryptographic key to be transmitted by the circuit exchange data service supported by network and carries out inverse process at the receive end to realize end-to end cipher communication function.
Owner:GUANGZHOU SPACEFLIGHT HAITE SYST ENG
Sensing network system for monitoring vehicle-mounted hazardous article and monitoring method
InactiveCN101325511BImprove monitoring reliabilityReduce labor intensityTransmission systemsNetwork topologiesWireless transmissionControl signal
The invention relates to a vehicle mounted dangerous articles control sensor network system, including: a dangerous articles detection sensor, installed around dangerous articles; a video acquisition device, installed above the dangerous articles, for acquiring and outputting video signals; a display screen, connected with the video acquisition device, for receiving video signals output from the video acquisition device; a wire transmission module, connected with the video acquisition device and the display screen, for transmitting the video signals from the video acquisition device onto the display screen; a signal processing module, for receiving analog induction signals and outputting digital sensing signals; a wireless transmission module, connected with the signal processing module, for transmitting outside in a wireless mode; a central control module, for receiving the digital sensing signals and determining to output control signals when the digital sensing signals represent the occurrence of dangerous articles and heterogeneous; a short message alarm module, connected to the central control module, transmitting alarming short messages to mobile phone of appointed users in a short message mode; a audible alarm module, connected to the central control module, for receiving the control signals transmitted from the central control module through a CDMA wireless network; a GPS locating module, installed on vehicles transporting dangerous articles, for reporting the accuracy position of vehicles toward control center in real time. The invention also provides a monitoringmethod, which effectively reduces work intensity of staff, improves reliability of vehicle mounted dangerous articles carriage, and can reduce false dismissal rate and false alarm rate.
Owner:JIAXING WIRELESS SENSOR NETWORKS CENT CAS
Handoff mechanism for CDMA wireless network using dynamically scalable traffic channels
InactiveUS7263359B2Radio/inductive link selection arrangementsWireless commuication servicesTelecommunicationsMobile station
A handoff mechanism for a mobile station and wireless network preferably operating in a Z×EV-DV mode, using scalable traffic channels where Z is a multiple of a 1×EV-DV channel, including a distance-based handoff. The disclosed handoff mechanism can be used in conventional wireless telecommunications systems.
Owner:SAMSUNG ELECTRONICS CO LTD
Vehicle positioning monitoring system based on GPS (global positioning system)
InactiveCN105872983APrecise positioningReal-time monitoring of running statusWireless commuication servicesTransmissionInformation processingDatabase server
The invention discloses a vehicle positioning monitoring system based on a GPS (global positioning system). The vehicle positioning monitoring system comprises a monitoring terminal and a monitoring center, wherein the monitoring terminal comprises a GPS unit, a processor, a CDMA (code division multiple access) unit, a storage unit, a reset unit, an operation unit and a power supply; the monitoring center comprises a CDMA wireless gateway, a monitoring manager, a processing server, a database server and an operation table; the monitoring terminal performs precise positioning on a vehicle through a GPS satellite network, and transmits the positioning information of the vehicle to the monitoring center in real time through a CDMA wireless network, so that the monitoring center can display and inquire various kinds of information of the vehicle on an electronic map with the geographic information processing and inquiry functions; the vehicle operation state is monitored in real time; the general problems of a current vehicle positioning monitoring system that the positioning precision is low, and the positioning information is not transmitted in time are solved.
Owner:成都谷辘信息技术有限公司
cdma network copy card detection method and system
The present invention relates to a method and system for detecting a CDMA network copy card. The method includes: when a user accesses a CDMA wireless network through a terminal device, the PDSN acquires the corresponding MEID from the terminal device; when the PDSN initiates an authentication request to the authentication device, the The MEID of the terminal device is sent to the authentication device; the authentication device judges whether the user has established a PPP connection. If the user has established a PPP connection, it compares whether the MEID corresponding to the established PPP connection is the same as the MEID of the terminal device. If not, then Make sure that the corresponding UIM card of the user has been copied. In the present invention, the PDSN submits the MEID obtained from the terminal device to the authentication device, and judges whether the new PPP connection uses a user terminal or a new If the user terminal is a new user terminal, it can be judged that it has used a duplicate card, thereby solving the problem of misjudgment caused by abnormal inter-PDSN handover at the PDSN boundary.
Owner:CHINA TELECOM CORP LTD
Method for realizing voice service, terminal and system for realizing voice fallback
InactiveCN103108402BSolve the problem of falling back more difficultReduce complexityConnection managementTime delaysControl manner
The invention discloses a voice service implementation method, a terminal and a system for implementing voice fallback. Among them, the method includes: the terminal sends a voice service request to the core network through the LTE wireless network; the terminal falls back the voice service from the LTE wireless network to the CDMA wireless network according to a set control method; the terminal executes the communication with the core network through the CDMA wireless network Voice service. Through the present invention, in the networking scenario of LTE wireless network and CDMA wireless network, the problem that it is difficult for the terminal to complete the voice service fallback is solved. This method reduces the complexity of the terminal completing the voice service in the above networking scenario, and reduces time delay.
Owner:ZTE CORP
Monitoring system for monitoring fluid transmission pipe by prior wireless network
Owner:SHENZHEN CARVE ELECTRONICS
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com