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40results about How to "Meet coverage requirements" patented technology
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Self-service charging system and method of plug-in type electric vehicle
ActiveCN101895136AMeet coverage requirementsReal-time monitoring statusBatteries circuit arrangementsSecondary cells charging/dischargingComputer monitoringIntegrated circuit
The invention discloses a self-service charging system of a plug-in type electric vehicle, comprising a plurality of charging stations, a data service center and a mobile communication service center, wherein each charging station comprises ZigBee networking equipment, a charging station computer monitoring center and a plurality of chargers, wherein the ZigBee networking equipment is connected with a ZigBee terminal node device of the plug-in type electric vehicle through a ZigBee wireless communication network; and each charger comprises a charger information management unit, an IC (Integrated Circuit) magnetic card identification device, a touch screen, a printer and a charging device. The self-service charging system solves the problems of unstable electrical connection caused by the wired communication connection of a charging system and the plug-in type electric vehicle and high networking difficulty and implementation cost caused by the wireless communication connection of the charging system and the plug-in type electric vehicle, can realize the self-service charging and has easy and convenient user operation, safety, automated and intelligentized charging process without manual duty; and besides, the self-service charging system can provide multiple types of charging service modes. The invention also discloses a self-service charging method of the plug-in type electric vehicle.
Owner:武汉经开科创运营有限公司
Invariant-booted random test case automatic generation method
InactiveCN102736973AIncrease the probability of picking a valid use caseImprove shortcomingsSoftware testing/debuggingGeneration processRandom method
The application form relates to software test core problems, namely test case automatic generation, and provides an invariant technology-combined random test improvement method, namely an invariant-booted random test case automatic generation method, aiming at the defects of currently widely-applied automatic technology, namely a random test method. Two new methods are mainly provided and comprise: filtering invalid test cases by utilizing invariants of the extracted programs, and retaining valid cases; reducing invalid case space by utilizing the invariants of the extracted programs, and improving the probability of selecting valid cases. The methods can be used for reducing the redundancy rate, meeting the coverage requirement and extremely solving the defects of the traditional random methods, are full-automatic in the whole case generation process, without other any input and manual interference except for necessary tested programs.
Owner:UNIV OF SCI & TECH OF CHINA
Automatic driving test scene construction method, device and equipment and readable storage medium
PendingCN112036001AMeet coverage requirementsIncrease the number ofGeometric CADCharacter and pattern recognitionTest efficiencySimulation
The invention discloses an automatic driving test scene construction method, device and equipment and a readable storage medium, and the method comprises the steps: carrying out the extraction of a primitive scene from a real traffic scene, building a primitive scene description model, and selecting a description variable value from a primitive scene description variable distribution interval; carrying out random sampling on the description variables according to description variable distribution by a Monte Carlo method based on importance sampling to generate a test element scene; generatinga test scene according to the parameter test primitive scene of the test scene element in the test task and a recombination method. According to the method, an actual complex system can be directly simulated, the problem of result distortion caused by complex system simplification is effectively solved, and the problem of dimensionality disasters that high-dimensional problem numerical solution errors are rapidly increased along with increase of dimensionality is avoided; a high-risk scene enhanced generation method is adopted, more high-risk scenes are generated with lower calculation overhead, the number of the high-risk scenes in the generated scenes is effectively increased, the number of the low-risk scenes is reduced, and the test efficiency is improved.
Owner:CHANGAN UNIV
Video monitoring layout optimization method and device based on road network
ActiveCN110602438AMeet coverage requirementsOptimize layoutClosed circuit television systemsVideo monitoringRoad networks
The invention discloses a video monitoring layout optimization method and device based on a road network. The method comprises steps of based on acquired road network data and multi-dimensional city basic data, calculating high risk degree levels corresponding to nodes in the road network data; according to the high risk degree levels corresponding to the nodes in the road network data, setting acorresponding coverage requirement for the node in each piece of road network data, and finally optimizing the position and the visual range of the camera around the node in each piece of road networkdata based on the position information and the visual range information of the camera in the video monitoring network, thereby meeting the coverage requirement corresponding to the node in each pieceof road network data. According to the invention, the rationality of urban video monitoring layout is evaluated, the layout of cameras in an urban video monitoring system is improved, and no monitoring dead angle is realized.
Owner:ZHEJIANG UNIVIEW TECH CO LTD
PRACH resource configuration method and device and PRACH baseband signal generation method and device
PendingCN109392155AMeet coverage requirementsMeet transmission needsWireless communicationHigh level techniquesGuard intervalPreamble
The embodiment of the present invention provides a PRACH resource configuration method and a PRACH baseband signal generation method and device. The resource configuration method includes the steps: determining the length TSEQ of a random access preamble sequence; determining; determining the number of random access time domains in the uplink time domain of each system radio frame according to thelength TSEQ of the preamble sequence; determining the length Tcp of a CP (cyclic prefix) and the length TGT of a guard interval GT between adjacent system radio frames according to the length of theuplink time domain and the length of the preamble sequence; determining the starting time domain position of the PRACH channel of each random access time domain according to the length of each systemradio frame, the Preamble sequence length TSEQ, the length Tcp of the CP, and the length TGT of the guard interval GT. According to the embodiment of the present invention, the method satisfies the coverage requirement of a broadband communication system and the transmission requirement of the PRACH, and avoids the interference of the uplink PRACH channel to the downlink PBCH by setting the guardinterval.
Owner:POTEVIO INFORMATION TECH
Sensor network node optimal deployment method based on improved differential evolution algorithm
ActiveCN110062389AImprove adaptabilityImprove node coverageNetwork topologiesLocation information based serviceCoverage ratioGlobal optimization
The invention discloses a sensor network node optimal deployment method based on an improved differential evolution algorithm, which is successfully applied to node optimal deployment of a wireless sensor network, and improves the diversity of initial populations by setting chaos mapping group initialization. An elite group is used to realize the guidance of a variation vector, and the global optimization speed of the group is accelerated. A parameter adaptive adjustment mechanism is used to enhance the adaptive capacity of the algorithm to the node. The method has the advantages that comparedwith a basic differential evolution algorithm, the node coverage rate and the convergence rate of the improved algorithm are greatly improved, meanwhile, possible emergencies of the nodes can be effectively coped with, and the adaptive capacity of the algorithm is enhanced. The improved differential evolution algorithm effectively prevents the population from falling into local optimum, and improves the optimization capability of the algorithm. Compared with a differential evolution algorithm before improvement, the network coverage rate is increased by about 5%, the coverage requirement of amonitoring area is met, the convergence speed is increased, and the improved algorithm has high adaptability.
Owner:JIANGXI UNIV OF SCI & TECH
Child-mother type far-end radio frequency unit and method for realizing indoor deep coverage thereof
InactiveCN110225528AReduce transmit powerReduce power consumptionRadio transmission for post communicationNetwork planningCoverage TypeIntermediate frequency
The embodiment of the invention discloses a child-mother type far-end radio frequency unit and method for realizing indoor deep coverage thereof. The child-mother type far-end radio frequency units are connected through network cables and are connected to an expansion unit through the network cables or photoelectric composite cables. The expansion unit is connected to a baseband processing unit through an optical cable. The child-mother type far-end radio frequency unit comprises a radio frequency capacity type mother unit which is used for receiving and transmitting digital baseband signals of a baseband processing unit. The radio frequency coverage type subunit is used for receiving the intermediate frequency signal of the radio frequency capacity type mother unit, converting the intermediate frequency signal into a radio frequency signal, and transmitting the radio frequency signal to a built-in antenna of the radio frequency capacity type mother unit after passing through the filter amplifier. More than two external antenna interfaces are arranged in the radio frequency capacity type mother unit, and the external antenna interfaces are used for being externally connected with more than two radio frequency coverage type subunits through network cables. Through the child-mother type far-end radio frequency unit, the line loss can be reduced, and the coverage requirement can be met. In addition, implementation and maintenance are convenient, capacity expansion is easy, and overall manufacturing cost is low.
Owner:CHINA INFOMRAITON CONSULTING & DESIGNING INST CO LTD
High-dynamic satellite signal capturing method and system based on code Doppler compensation
ActiveCN111880202AOvercome Correlation Peak ShiftOvercoming sensitivitySatellite radio beaconingTelecommunicationsFrequency spectrum
The invention discloses a high-dynamic satellite signal capturing method and system based on code Doppler compensation, and the method comprises the steps: sequentially carrying out the correlation integral calculation, buffering processing and frequency spectrum shifting of the storage data of a to-be-captured satellite signal, meeting the requirements of a high-dynamic Doppler frequency coveragerange, reducing the correlation peak attenuation caused by Doppler, and reducing resource consumption of subsequent incoherent accumulation; enabling the frequency spectrum shifted data to enter an FFT module, and calculating an integral value, Doppler frequency and incoherent accumulation times on a preset numerical code phase respectively; utilizing the Doppler frequency, the incoherent accumulation times, the integral value on the preset numerical code phase and the preset integral time to calculate the offset and dislocation incoherent accumulation of the related peaks, thereby reducing the energy dispersion, enhancing the capture sensitivity in the high-dynamic environment, and reducing the average capture time by half. The increase of code phase search times caused by dislocation incoherent accumulation is compensated, and the capture speed, capture sensitivity and resource consumption are balanced.
Owner:华力智芯(成都)集成电路有限公司
Data stratified sampling method for application appraisal expansion platform of IT system
InactiveCN102147893AMeet coverage requirementsSimple samplingData processing applicationsSpecial data processing applicationsInformation technologyData mining
The invention discloses a data stratified sampling method for an application appraisal expansion platform of an information technology (IT) system. The method comprises a stratification step and a sampling step. The method can be used for quickly and effectively stratifying the records in the conventional data table so as to bring convenience to further sampling, the stratification and sampling algorithms reflect that the functions of the records of each category in the sampling records are equivalent to those in the original data table, and the coverage requirement for evaluating various records is met.
Owner:国网重庆市电力公司綦江供电分公司
Optimized method of variable k coverage for two-dimensional intrusion monitoring region
ActiveCN105072622AEffective monitoringGive full play to the role of nodesNetwork topologiesHigh level techniquesCluster algorithmSensor node
The invention discloses an optimized method of variable k coverage for a two-dimensional intrusion monitoring region. The method comprises the following steps: step (1), abstracting an intrusion object as a point and constructing a two-dimensional monitoring region coverage model of single point intrusion; and step (2), meshing a two-dimensional monitoring region according to the two-dimensional monitoring region coverage model of single point intrusion and a grid clustering algorithm, performing clustering according to the coverage of each grid cell after meshing, movably deploying sensor nodes in the two-dimensional monitoring region according to the comparison of the current coverage with the desired coverage, and finally realizing the variable k coverage of the two-dimensional monitoring region. According to the method, the nodes are re-deployed to realize flexibly variable coverage of different regions at different times; in the case of limited sensor nodes, the effects of the nodes are developed thoroughly to ensure multiple coverage of a key region and also satisfy the coverage requirement of a common region; as a result, effective monitoring on the intrusion object can be realized at the cost of consuming less energy.
Owner:SHANDONG NORMAL UNIV
Remote control instruction traversal test device and traversal method thereof
InactiveCN103576669AMeet coverage requirementsElectric testing/monitoringRemote controlLogic analyzer
The invention discloses a remote control instruction traversal test device which comprises a remote control demodulator, a logic analyzing instrument, an oscilloscope, a direct current power supply, a digital multimeter, a remote control comprehensive test device, a remote control instruction detecting device, a first remote control instruction decoding unit and a second remote control instruction decoding unit, wherein the direct current power supply, the digital multimeter, the remote control comprehensive test device, the remote control instruction detecting device, the first remote control instruction decoding unit and the second remote control instruction decoding unit are connected with the remote control demodulator. The logic analyzing instrument and the oscilloscope are connected with the remote control instruction detecting device respectively. The first remote control instruction decoding unit and the second remote control instruction decoding unit are connected with the remote control instruction detecting device respectively. The remote control instruction traversal test device can meet the coverage requirement of an instruction traversal test. Meanwhile, the invention further discloses a remote control instruction traversal test method. As multiple instructions are sequentially tested and triggering conditions of the logic analyzing instrument are reasonably set, the coverage requirement of the instruction traversal test can be met.
Owner:SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
Method, device and system for covering tunnel in time division duplexing system
ActiveCN101420704AMeet coverage requirementsIncrease transmit powerDiversity/multi-antenna systemsRadio transmission for post communicationEngineeringTime-division multiplexing
The invention discloses a method used for covering tunnels in a TDD system, comprising the steps as follows: a plurality of signals output by a remote radio frequency unit RRU are calibrated; two signals are selected out of a plurality of calibrated signals; the two signals are respectively used for covering tunnels. Two or more signals are used for covering tunnels, therefore, the emission power of the downlink signal can be greatly improved, the receiving gain of the uplink signal can be greatly improved, thus improving the practical coverage distance and meeting the coverage requirement better. The invention also provides equipment which is used for covering the tunnels in the TDD system, and a system which is used for covering the tunnels in the TDD system.
Owner:DATANG MOBILE COMM EQUIP CO LTD +1
Content increment transmission method for mobile communication network, and mobile communication system
ActiveCN109600431AReduce the occupancy of communication resourcesImprove resource utilization and communication efficiencyData switching networksWireless communicationData contentStep response
The invention belongs to the technical field of mobile communication, and discloses a content increment transmission method for a mobile communication network, and a mobile communication system. The trusted node in the network is allowed to intelligently analyze the data content in the process of storing and forwarding the data, and the positive and negative increment processing is carried out onthe transmitted data volume to realize content increment exchange. The method can be operated in a transport layer according to an open system interconnection reference model, and comprises a contentincrement forward transmission mechanism and a step-by-step response mechanism. The method comprises that the trusted node combines with the context information stored in the trusted node to carry outthe positive increment or negative increment operation on contents of a transmission control protocol message segment, thereby completing forward transmission of data; and then, after receiving the data, the nodes at all levels carry out step-by-step feedback on a forward transmission result of the data. The method is oriented to non-delay sensitive services, content increment exchange is achieved by means of the storage computing capacity of the nodes, and the resource utilization rate and the communication efficiency are improved.
Owner:XIDIAN UNIV
Production method of rice weeding paper
ActiveCN106368049AHigh opacityLow air permeabilityWater-repelling agents additionReinforcing agents additionWeedFertilizer
The invention relates to a production method of rice weeding paper. The rice weeding paper is produced by the aid of a common cylinder paper-making machine, main pulp materials of the rice weeding paper include unbleached sulfate softwood pulp and unbleached sulfate hardwood pulp, and auxiliary raw materials of the rice weeding paper include carbon black, rosin size, aluminum sulfate, polyamide polyamine epichlorohydrin serving as wet strength agents and polyacrylamide serving as retention agents. A papermaking process includes that the main pulp materials are sequentially subjected to repulping, defibrination, proportioning, sizing, cylinder papermaking, pressing, vat drying, surface gluing, after-drying and winding to form finished paper. The rice weeding paper has the advantages that the rice weeding paper is light in weight, low in cost and air permeability, high in opaqueness, green and environmentally friendly, the longitudinal strength of the paper is high by the aid of the cylinder papermaking process, field covering requirements can be effectively met, excellent sunshine shading and air isolation performances are achieved, growth of field weeds is prevented or reduced, pollution is avoided, the rice weeding paper can serve as fertilizer to be used, and pollution-free agricultural production is achieved.
Owner:ZHENJIANG DADONG PULP & PAPER
Meteorological information acquisition system based on wireless network
InactiveCN105225452AReduce resource utilizationIncrease costTransmission systemsData acquisitionData transmission
A meteorological information acquisition system based on wireless network includes N data acquisition devices, N data transmission units, a router, and a remote monitoring center, wherein n is a positive integer; each data acquisition device is suitable for the real-time acquisition of meteorological parameters; each data transmission unit is connected to a data acquisition device, and transmits the meteorological parameters to the router through a wireless way; the router is applicable to transmitting the meteorological parameters to the remote monitoring center; the remote monitoring center is for storing the meteorological parameters and providing weather forecast information by comprehensive analysis on the gas parameters. The meteorological information acquisition system based on wireless network provided by the invention has low cost, wide coverage and high data transmission rate.
Owner:CHENGDU ZHONGSHAN SCI & TECH
Method and device for transmitting accidental access channel pilot frequency
InactiveCN101325448AMeet coverage requirementsRadio/inductive link selection arrangementsRadio transmission for post communicationTransmitted powerEngineering
The invention provides a method for transmitting the random access channel (RACH) pilot frequency and a device, wherein the method comprises: obtaining the protecting time slot (GP) adopted by the district and the GP position, computing the delay time for transmitting the RACH pilot frequency through using the obtained GP value of the district and the diameter of the supported district set in advance; starting timing when receiving the downstream pilot frequency time slot, timing the delay time, transmitting the RACH pilot frequency. According to the method, the computed pilot frequency delay time can reach the diameter of the supported district, and can satisfy the larger covering request of the diameter of the district compared with the traditional technology. Furthermore, when the transmitting power of the station signal from the other district received by the local district is smaller than or equal to the delay time of certain threshold, the disturb of the downstream signal from other station on the RACH pilot frequency of the upstream of the local district can be avoided.
Owner:HUAWEI TECH CO LTD
Wireless communication system and method for sending uplink synchronization channel
InactiveCN102624442AMeet coverage requirementsIncrease the number of multiplexing usersNetwork topologiesRadio transmission for post communicationCollision probabilityLocal area network
The invention discloses a wireless communication system and a method for sending an uplink synchronization channel as well as a corresponding wireless frame structure and a preamble structure in a wireless subframe. The wireless communication system comprises a sending party and a receiving party; and the sending party sends preambles to the receiving party by an uplink synchronization channel, wherein the preambles are sent at six resource blocks of frequency domains of one or more subframes of a wireless frame that the uplink synchronization channel is located at. And each of the preambles includes a cyclic prefix and a sequence according to a timing sequence, wherein the sequence's duration is 4096Ts or 2048Ts. Variation of the duration of the sequence can correspond different duration of the cyclic prefix. According to the invention, a coverage requirement of a wireless local area network can be met; wireless resources can be fully utilized; the number of multiplexing subscribers can be improved; collision probability of uplink random access is reduced; and the system throughput is improved.
Owner:ZTE CORP
Three-frequency miniaturized building beautifying antenna
PendingCN114639958AMiniaturizationGood Gain IndexSimultaneous aerial operationsRadiating elements structural formsEngineeringMechanical engineering
The invention relates to a three-frequency miniaturized building beautifying antenna, which comprises an outer cover and an antenna body arranged in the outer cover, and is characterized in that the antenna body comprises a reflecting plate, a low-frequency array, an intermediate-frequency array, a high-frequency array and an isolating bar arranged between every two adjacent arrays, and the low-frequency array, the intermediate-frequency array and the high-frequency array are arranged on the reflecting plate; the antenna body rotates by + / -30 degrees in the outer cover by taking the long side of the outer cover as an axis; the low-frequency array is arranged on one side of the long edge of the reflecting plate, and the intermediate-frequency array and the high-frequency array are arranged on the other side of the long edge of the reflecting plate along the same center line; the distance between two adjacent intermediate-frequency radiation units in the intermediate-frequency array and the distance between two adjacent low-frequency radiation units in the low-frequency array are respectively 2 times and 4 times of the distance between two adjacent high-frequency radiation units in the high-frequency array; and at least one intermediate-frequency radiation unit and one high-frequency radiation unit are axially nested to form an integrated radiation unit. The antenna provided by the invention is miniaturized in size, has good gain index, radiation performance and coverage performance, and realizes frequency band coverage of 690-960 MHz, 1700-2700 MHz and 3300-3800 MHz.
Owner:深圳麦赫科技有限公司
Miniature wireless local area network (WLAN) dual-frequency PIFA antenna
PendingCN108134194AEfficient radiationEfficient use ofSimultaneous aerial operationsAntenna supports/mountingsFrequency coverageDual frequency
The invention relates to a miniature wireless local area network (WLAN) dual-frequency PIFA antenna. An antenna radiation unit comprises a grounding line, a feeder, a first branch wire and a second branch wire, wherein the grounding line, the feeder, the first branch wire and the second branch wire are attached onto a surface of an antenna support to form an antenna assembly, the grounding line ofthe antenna radiation unit is achieved by a relatively narrow wire, the first branch wire of the antenna radiation unit extends from the feeder, the second branch wire of the antenna radiation unit employs a U-shaped wire which is narrow in front part and wide in rear part, an antenna wiring form of the antenna radiation unit employs the U-shaped wire, the feeder is connected with a feeding source and the antenna radiation unit, and the grounding line is connected with a printed circuit board and the antenna radiation unit. A WLAN dual-frequency mobile terminal antenna is achieved by a miniaturization technology, the space can be effectively utilized, frequency coverage of 2.4GHz WLAN and 5GHz WLAN is achieved on the basis of integral miniature product, so that high-efficiency antenna radiation of WLAN dual frequencies is achieved.
Owner:SHANGHAI RADIATE COMM ELECTRONICS
Method and device for testing mobility of application system
ActiveCN106294115BImprove test efficiencyImprove accuracySoftware testing/debuggingTest efficiencyData mining
Owner:ADVANCED NEW TECH CO LTD
a tent
Owner:江燕南
A variable k-coverage optimization method for two-dimensional intrusion monitoring area
ActiveCN105072622BGuaranteed multiple coverageEffective monitoringNetwork topologiesHigh level techniquesCluster algorithmNODAL
Owner:SHANDONG NORMAL UNIV
Tent
Owner:江燕南
Production method of rice weeding paper
ActiveCN106368049BQuantitative lowQuantitative light and low costWater-repelling agents additionReinforcing agents additionEnvironmental resistancePapermaking
The invention relates to a production method of rice weeding paper. The rice weeding paper is produced by the aid of a common cylinder paper-making machine, main pulp materials of the rice weeding paper include unbleached sulfate softwood pulp and unbleached sulfate hardwood pulp, and auxiliary raw materials of the rice weeding paper include carbon black, rosin size, aluminum sulfate, polyamide polyamine epichlorohydrin serving as wet strength agents and polyacrylamide serving as retention agents. A papermaking process includes that the main pulp materials are sequentially subjected to repulping, defibrination, proportioning, sizing, cylinder papermaking, pressing, vat drying, surface gluing, after-drying and winding to form finished paper. The rice weeding paper has the advantages that the rice weeding paper is light in weight, low in cost and air permeability, high in opaqueness, green and environmentally friendly, the longitudinal strength of the paper is high by the aid of the cylinder papermaking process, field covering requirements can be effectively met, excellent sunshine shading and air isolation performances are achieved, growth of field weeds is prevented or reduced, pollution is avoided, the rice weeding paper can serve as fertilizer to be used, and pollution-free agricultural production is achieved.
Owner:ZHENJIANG DADONG PULP & PAPER
Method, device and system for covering tunnel in time division duplexing system
ActiveCN101420704BMeet coverage requirementsIncrease transmit powerDiversity/multi-antenna systemsRadio transmission for post communicationEngineeringTime-division multiplexing
The invention discloses a method used for covering tunnels in a TDD system, comprising the steps as follows: a plurality of signals output by a remote radio frequency unit RRU are calibrated; two signals are selected out of a plurality of calibrated signals; the two signals are respectively used for covering tunnels. Two or more signals are used for covering tunnels, therefore, the emission powerof the downlink signal can be greatly improved, the receiving gain of the uplink signal can be greatly improved, thus improving the practical coverage distance and meeting the coverage requirement better. The invention also provides equipment which is used for covering the tunnels in the TDD system, and a system which is used for covering the tunnels in the TDD system.
Owner:DATANG MOBILE COMM EQUIP CO LTD +1
Metamaterial antenna and electronic equipment
InactiveCN102769182BMeet performance requirementsImprove workabilityRadiating elements structural formsAntenna earthingsGeneral Packet Radio ServiceElectricity
The invention provides a metamaterial antenna. The metamaterial antenna comprises an antenna unit, wherein the antenna unit comprises a dielectric substrate, a radiation unit, a feeder line, a feeding point, a feed wiring and grounding plate and a grounding point, the radiation unit is arranged on the surface of the dielectric substrate, the feeder line is coupled to the radiation unit, the feed wiring and grounding plate is electrically connected with the feeder line and the feeding point, the grounding point is electrically connected with a grounding plate, and the radiation unit comprises a sheet metal and a hollow groove formed on the sheet metal. According to the metamaterial antenna, due to the structural design, the performance requirement of the antenna is met; and moreover, the metamaterial antenna has high gain, the wireless data transmission requirement of electronic equipment employing a general packet radio service (GPRS) module can be met, and a low-loss antenna dielectric substrate is combined, so that the metamaterial antenna has high operating performance. According to the electronic equipment employing the metamaterial antenna, wireless signals can be well received and transmitted, and the wireless signal coverage requirement is met.
Owner:深圳公众信息技术有限公司
Mobile communication network-oriented content incremental transmission method, mobile communication system
ActiveCN109600431BReduce occupancyImprove utilization efficiencyData switching networksWireless communicationTransport layerStore and forward
The invention belongs to the technical field of mobile communication, and discloses a mobile communication network-oriented content incremental transmission method and a mobile communication system; allowing trusted nodes in the network to intelligently analyze data content during the process of storing and forwarding data , and perform positive and negative incremental processing on the amount of transmitted data to realize content incremental exchange. According to the open system interconnection reference model, it can run at the transport layer, including the content incremental forward transmission mechanism and the step-by-step response mechanism. First of all, the trusted node combines the context information it stores to perform positive or negative increment operations on the content of the transmission control protocol segment to complete the forward transmission of data; then, after receiving the data, nodes at all levels perform positive Provide step-by-step feedback to transfer results. The invention is oriented to non-time-delay-sensitive services, utilizes storage and computing capabilities of nodes, realizes incremental content exchange, and improves resource utilization and communication efficiency.
Owner:XIDIAN UNIV
Ultra-wideband antenna and resonance method thereof
PendingCN108281770AImprove efficiencyHigh gainSimultaneous aerial operationsRadiating elements structural formsUltra-widebandTransceiver
The invention relates to an ultra-wideband antenna and a resonance method thereof. The ultra-wideband antenna is characterized in that two working modes at low frequency and two working modes at highfrequency are excited at the same time by a matching structured synthesized by double-F-shaped routing, and five resonance working modes are achieved by the four working modes and one self-resonance of an antenna body at high frequency. The ultra-wideband antenna structurally comprises a printed circuit board 5 and an antenna component and is characterized in that the antenna component is arrangedat the upper end of the printed circuit board to form the whole antenna system; the antenna body is connected with a transceiver through a feeder, the other end of the feeder is connected with a feedsource, a grounding wire attaches to a support and is connected with the antenna body and the printed circuit board through a matching circuit, and five resonance working modes are excited by the joint effect of the matching structure, the antenna, the feeder and the grounding wire. The ultra-wideband antenna has the advantage that the five resonance working modes are excited by the joint effectof the matching structure, the antenna, the feeder and the grounding wire to achieve frequency coverage of low frequency 80-1400MH and high frequency 2-4.5GHz and a wideband effect.
Owner:SHANGHAI RADIATE COMM ELECTRONICS
A Novel Broadband LTE Antenna for Mobile Terminals
ActiveCN103825080BMeet coverage requirementsImprove performanceAntenna supports/mountingsRadiating elements structural formsBroadbandTerminal system
Owner:HAITONG COMM ELECTRONICS
Method, device and system for covering tunnel in time division duplexing system
InactiveCN101420255AMeet coverage requirementsIncrease transmit powerRadio transmission for post communicationRadio relay systemsEngineeringTime-division multiplexing
The present invention discloses a method for covering tunnels in a TDD system. The method comprises steps of selecting two paths of signals from multiple paths of signals output from a remote-end radio-frequency unit (RRU) and using the selected two paths of signals to cover the tunnels. By adopting the two paths of signals or even more paths of signals to cover the tunnels, not only the downlink signal transmitting power is improved greatly, but also the uplink signal receiving gain is greatly improved. Therefore, real cover distance is increased and tunnel cover requirement is satisfied preferably. The present invention also provides a device for covering tunnels in a TDD system and a system for covering tunnels in a TDD system.
Owner:DATANG MOBILE COMM EQUIP CO LTD +1
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