358results about How to "Resolve transmission" patented technology

The invention provides an Internet teaching method and system for developing teaching activities through the Internet including a wireless communication network, and particularly discloses a method and system capable of recording the Internet teaching process in real time and accurately and efficiently storing the Internet teaching process in a cloud side. The method includes the step of evaluating educational document learning results by students to learn and distinguish learning situations of students of different levels, thereby achieving targeted differential teaching, tutoring, homework doing, exercising and the like and easily improving the learning efficiency and learning effect, especially continuously improving the students at different learning progresses. Furthermore, by means of a data return gateway, a data verification mechanism, a timestamp verification mechanism, an audio and video flow verification mechanism, a data complementary transmitting mechanism, a local fragmentation encrypting, storing and uploading mechanism and other means, recorded data is stored in the cloud side efficiently and accurately.

The invention relates to a transmitting method of a downlink link demodulation reference signal, transmitting and receiving devices and a generating method of a demodulation reference signal sequence. The transmitting method of the demodulation reference signal provided by the invention comprises the following step that: the transmitting device transmits the demodulation reference signal according to a demodulation reference signal pattern, wherein in the demodulation reference signal pattern, the receiving device can receive one or more orthogonal frequency division multiplexing (OFDM) symbols which are not occupied by a common reference signal (CRS) at the time domain position of the demodulation reference signal; and the demodulation reference signal is used for performing coherent demodulation on relay link downlink data transmission. Through the method and the devices, the transmission problem of a relay link downlink demodulation reference signal is solved and the conflict between the demodulation reference signal and the CRS is avoided.

The invention relates to a decentralized power transaction method and system based on block chain technology. The method includes the following steps of (1) performing seller pending and buyer purchasing; (2) writing the user pending and transaction information into a block chain transaction database; and (3) performing real-time polling on the reached transaction records in the block chain transaction database, and carrying out the power scheduling from the seller to the buyer once the reached transaction is queried. The method and system allow the generating users to realize the point-to-point efficient, safe, and reliable power transaction and transmission based on proximity principle, and prevent the power transaction records from tampering.

The invention discloses an e-commerce website real-time recommending method under big data. The method includes the following steps: using user's implicit behavior log information on e-commerce websites to train an offline recommendation model; online acquiring user's implicit behavior log information, and using distributed-storage technology and distributed-streaming technology to rapidly process user's bulk implicit behavior log information; combining the well-trained offline recommending model and user's latest implicit behavior log information that undergo the distributed-streaming and providing the latest commodity recommendation list to the user. According to the invention, the method can real-time analyze user's behaviors under big data and provide real-time recommendation and feedback, and increases user's satisfaction and transaction transfer rate of e-commence websites.

The invention discloses a wireless audio and video transmission system for transmission line helicopter routing inspection. The system comprises a helicopter airborne system, a ground station system and a command center end system, wherein the helicopter airborne system is connected with the ground station system in a wireless communication way; the ground station system is connected with the command center end system in an industrial Ethernet way; the helicopter airborne system further comprises a front end video acquisition and storage system, a video transmission system and a voice intercom system; the ground station system further comprises an audio and video receiving system, a local video monitoring system, a VOIP telephone system and an optical fiber transmission system; and the command center end system further comprises a video playing system, a picture recording system and a VOIP telephone system. Due to the adoption of the technical scheme, the system not only can change and improve the conventional line walking mode and work efficiency, but also can achieve real-time multi-channel video transmission, storage and voice intercom.

The invention discloses a downlink control information transmission method. A base station determines time-domain and frequency-domain positions of an enhanced search space carrying downlink control information and sends the downlink control information in the time-domain and frequency-domain positions. The invention further discloses a downlink control information transmission device. By the adoption of the scheme of the invention, the problem that a search space of a PDCCH region cannot be used for transmitting downlink control information is solved by using an enhanced search space to transmit downlink control information under the situation in which an NCT independently-operated and low-cost terminal is accessed into a large-bandwidth system.

The invention discloses a time-frequency diagram processing method and system for mechanical equipment monitoring vibration signals. The time-frequency diagram processing method comprises the steps that firstly, linear or bilinear time-frequency transformation is carried out on collected mechanical equipment monitoring vibration signals to obtain a time-frequency diagram TFRs, and average threshold processing is carried out on the time-frequency diagram TFRs to obtain a sparse time-frequency diagram STFRs; secondly, time-frequency compression sampling is carried out on the STFRs in a random sampling mode to obtain a matrix M<STFR > with dimensionality being k times the dimensionality of an original matrix; thirdly, the parallel class FISTA proximal decomposition method is used for reconstructing an STFRs* through iterative computation. The time-frequency diagram processing system comprises a monitoring front-end machine and a server connected with the monitoring front-end machine. The monitoring front-end machine comprises an A / D data collection module, a time-frequency transformation module, an average thresholding module and a time-frequency compression sampling module and is connected with a vibration sensor. The server comprises an on-line data storage module and a reconstruction algorithm module. According to the time-frequency diagram processing method and system, the dimensionality of the reconstructed time-frequency diagram is greatly reduced, data storage and transmission are facilitated, and time-frequency analysis technology can be widely applied for mechanical equipment fault real-time quantitative analysis and diagnosis.

The present invention provides a method and a device for transmitting information on an enhanced physical downlink control channel (E-PDCCH). The sending method comprises: obtaining, according to a first aggregation level of a first candidate E-PDCCH, a first eCCE or CCE resource mapped by the first candidate E-PDCCH in a first PRB resource, in the first aggregation level, eCCE or CCE resources mapped by candidate E-PDCCHs in the first PRB resource being different, and the first PRB resource being formed of a PRB multiplexed by a candidate E-PDCCH and a PDSCH in each aggregation level of each sub-frame; determining a first DMRS port corresponding to a reference signal corresponding to the first candidate E-PDCCH; and respectively sending the reference signal corresponding to the first candidate E-PDCCH and a data part on a sub-carrier corresponding to the first DMRS port and the first eCCE or CCE resource. Technical solutions of the present invention solve an E-PDCCH transmission problem.

The invention discloses a method and a system for transmitting uplink control information on a physical uplink shared channel, thereby transmitting the uplink control information on the physical uplink shared channel, wherein the method comprises the following steps: encoding the uplink control information and a transmission block which need to be transmitted on the physical uplink shared channel according to relevant information of the target transmission block and an offset factor, interweaving the control information after the encoding with data, and then sending on the physical uplink shared channel. Compared with the prior art, the technical scheme provides the method for transmitting an uplink control channel on the physical uplink shared channel.

This invention discloses a power report method and a device in a carrier aggregation system, which guarantees the transmission of data and signaling in a serving cell. The power report method comprises: UE supports respectively transmitting SRS and uplink data in different serving cells at the same time, or, the UE adopts one of the following formulas to calculate and transmit PH information of the SRS while supporting transmitting SRS and uplink control information respectively in different serving cells at the same time. The formulas are as follow: PH information =the biggest transmission of the serving cell when the UE is transmitting the SRS -the data transmission channel transmission power which is evaluated by the UE in the serving cell; and PH information =the biggest transmission power of the serving cell when UE is transmitting the SRS-the uplink data transmission channel transmission power which is evaluated by the UE in the serving cell-SRS transmission power. UE reports PHR information which carries the PH information. The power report device is positioned in the UE, comprising a PH information calculation module and a PHR information report module.

The invention discloses a device-to-device (D2D) communication method, apparatus and system, wherein the method includes: receiving a first resource configuration message of the D2D from a network node, and determining D2D resource sets according to the first resource configuration message; and transmitting device to D2D signals in the resource sets, wherein the resource sets are distributed periodically, and each resource period includes a plurality of resource units divided by a time division multiplexing mode and / or a frequency division multiplexing mode.

The invention discloses a method for transmitting reference signals. The method comprises the following steps of: configuring at least two reference signals for demodulating the data transmitted by a down link, wherein the two reference signals include a first reference signal and a second reference signal; when the down link transmits data, transmitting the first reference signal and / or the second reference signal. The invention also discloses a transmission system of reference signals. The problem of balancing the reference signal transmission under different communication scenes is solved, the method and the system provided by the invention are not only compatible, namely being compatible to the conventional LTE (Long Term Evolution) / LTE-A (Advanced Long-Term Evolution) Release-10 system, but also can be suitable for more communication scenes, such as a communication scene in high-speed movement state, the transmission of the reference signals becomes more flexible, and the optimality of the communication performances under different scenes is guaranteed.

The present invention relates to an IQ data transmission method between BBU and RRU. Said method comprises the steps of putting wireless system IQ data having a sampling velocity as integral times as transmission system basic frames velocity directly to AxC subchannel for a transmission; or else, putting said data to one or N AxC subchannels for a transmission, through a packing manner. Said transmission method is compatible with direct mapping and data packet transmission modes, transmits wireless system IQ data having a code bit rate consistent with transmission system basic frames velocitydirectly and transmits other wireless system IQ data through data packet transmission mode. Therefore, said method exhibits both high efficiency of AxC subchannel direct mapping mode and flexibility of data packet mode, is capable of transmitting a variety of wireless system IQ data at one time, and satisfies network building needs of multi-mode baseband unit and multi-mode distal end radio frequency unit.

The present invention discloses a physical downlink control channel transmission method. The physical downlink control channel transmission method is used for a wireless network device to transmit N signal sets, wherein each signal set is used for transmitting the control information of one or more second wireless network devices, the signals of the signal sets include PDCCHs (physical downlink control channel), or PDCCHs and PCFICHs (physical control format indication channel). The method includes the step that the first wireless network device sends signal sets to the second wireless network devices on resources which can be occupied by each signal set, wherein the first wireless network device carries out sending processing on each signal set, wherein the sending processing comprises at one kind of processing selected from multiplexing, scrambling, modulation, interleaving and resource mapping. With the physical downlink control channel transmission method provided by the technical schemes of the invention adopted, interference between the signal sets can be eliminated, the transmission reliability of the PCFICHs and the PDCCHs can be improved, and therefore, the second wireless network devices can receive the PCFICHs and the PDCCHs on the resources of received signal sets, and the signal detection complexity of the second wireless network devices can be decreased.

The invention relates to a multi-channel real-time three-dimensional visual scene rendering display method, which adopts multi computer and double networks to transmit data through a UDP protocol on a visual scene subnet. System time is divided into barrels with equal time intervals according to render frame rate; each DDU is associated with a timestamp when being computed, and the timestamp indicates which barrel the data is associated with. Moreover, a timestamp is arranged into and written into each DDU; DDU buffer areas are arranged on a receiving side; forwarding time of DDUs are adjusted backwards; when timestamps of the DDUs are matched with render time, rendering is performed, thereby jitter is effectively prevented. Simultaneously, a two-step linear method is adopted to forecast positions and statuses of next frames of various moving targets, namely information of an n+2 frame is forecasted if target positions of an n frame and an n+1 frame are known. When the DDUs are lost, rendering is performed according to forecasted data. The invention successively solves the technical problem of real-time rendering of multi-channel three-dimensional visual scenes by a plurality of microcomputers and satisfactorily realizes frame synchronization under multi-computer distribution collaborative environment, and smooth display effect is obvious.

The invention relates to an interfering information inter-base station transmission method and a system, base stations and a mobile management entity; wherein, the method comprises as following: when an X2 interface between a first base station and a second base station turns has faults, the first base station sends interfering information to the mobile management entity through an S1 interface, and the interfering information is used for indicating the information base station, which is interfered; and the mobile management entity can sends out the received the interfering information to the second base station. The embodiment of the invention can transmit the interfering information through the S1 interface when the X2 interface between adjacent base stations has faults, so as to solve the problem of the interfering information transmission between the adjacent base stations.

The invention discloses a matrix switching system and a matrix switching method for switching among multi-format video signals. The system comprises an optical fiber emission convertor, an optical matrix main unit and an optical fiber receiving convertor, wherein the optical fiber emission convertor is used for recognizing and converting the multi-format video signals into unified optical signals, emitting the optical signals to the optical matrix main unit, and receiving reversely transmitted optical signals to form control data; the optical matrix main unit is used for fulfilling conversion and transmission of the video signals, synchronously converting the control data corresponding to the video signal into optical signals in the video signal conversion and transmission process, and reversely transmitting the optical signals to the optical fiber emission convertor; the optical fiber receiving convertor is used for converting the optical signals transmitted by the optical matrix main unit into video signals taking the format of recognizable electrical signals of backward stage display equipment. The matrix switching system and the matrix switching method have the advantages that the signals of the input-output paths are mutually independent, so that when one path of signals get out of order, the transmission of other paths of signals can be prevented from being impacted; meanwhile, the problem that the transmission of the control signals requires a special cable can be solved effectively as reverse data are synchronously transmitted in optical fibers.

The invention relates to a data transmission device applied to Web3D (Three-dimensional), in particular to a device for transmitting data with the Internet. The data transmission device comprises a request judging device, a scene data reading device, a data conversion device and an interface mapping device, wherein the request judging device is used for judging the position of data requested by a client, and resolving position information such as a server where the data are positioned, a scope and the like; the scene data reading device is used for reading various types of three-dimensional objects in different scenes and converting object data into an XML (Extensive Makeup Language) encapsulating structure; the data converting device is used for converting the object data among the XML encapsulating structure, an SOAP (Simple Object Access Protocol) encapsulating structure and a JSON (JavaScript Serialized Object Notation) encapsulating structure; and the interface mapping device is used for establishing a corresponding mapping relation between data interfaces in a JavaScript module and an OpenGL module, and transmitting response data of a server end to a local OpenGL graphics library. According to the method and the device, integrated utilization of Web3D application and other application systems is realized, and data sharing, information management and maintenance and the like are achieved. The invention further provides a data control method applying the data transmission device.

The invention discloses a time comparing device for a digital substation, comprising a core processing module and a PTP event processing module, an Ethernet communication interface module, a serial communication interface module and a discrete input / output module, which communicate with the core processing module. The device is characterized in that the core processing module comprises a central processing unit (CPU) AT91RM9200 which forms a basic embedded system with a synchronous dynamic random access memory, parallel flash, a real-time clock, a watchdog timer and a JTAG debug port, which are connected with the CPU AT91RM9200. The PTP event processing module, an Ethernet transceiver DP83640 and protocol stack software / hardware supporting the IEEE1588 standard are combined to realize thehigh-precision time comparing function of the substation device. The device realizes the high-precision time comparing supporting the IEEE1588 standard and the time synchronization requirement of thedigital substation device.

The invention discloses a transparent conductive film with enhanced thermal stability and an application thereof, belonging to the field of photoelectric devices. The transparent conductive film with enhanced thermal stability provided by the invention successively comprises a substrate, a first oxide layer, a first heavily doped layer, a metal layer, a second heavily doped layer and a second oxide layer from bottom to top. The invention also provides an application of the transparent conductive film in photoelectric devices. The resistivity of the transparent conductive film is reduced by introducing heavily doped layers between the metal layer and the oxide layers of the transparent conductive film, and the thermal stability of the transparent conductive film is improved.

The invention discloses a method for transmitting scalable videos according to priorities. The method comprises the following steps of: sequencing layered code streams which are subjected to scalable video coding (SVC) of each group of pictures (GOP) of the scalable videos based on priorities; and performing packing and Raptor coding on the sequenced SVC layered code streams and transmitting coded scalable video code streams to a scalable video receiving end through a transmission channel. The invention also discloses a device for transmitting scalable videos based on priorities. In the method, the SVC layered code streams are sequenced on the basis of priorities according to the layer characteristic of the SVC layered code streams, and packing and Raptor coding are performed on the sequenced SVC layered code streams, so that the problems of optimized selection and transmission of scalable video code streams are solved and the quality of a reconstructed image of the scalable video code streams can be finally enhanced.

The invention discloses a channel state information processing method, a device and a system. The second channel state information of a second link is sent to a network node through a first link. The first link is a cellular communication link of a first device to the network node. The second link is a D2D communication link which can communicate with the first device and is between a second device and the first device. According to the invention, a technology which processes the channel state information solves the problem of channel state information transmission when D2D communication in a cellular communication system is carried out; a basis is provided for scheduling when D2D communication is carried out; the resource utilization rate of D2D communication is ensured; and without significantly increasing the complexity of the design and the realization of user equipment, D2D communication is compatible with cellular communication.

The present invention relates to a Beidou short message-based ship continuous trajectory transmission and compression method. According to the method, short message compression encoding rules are set;the continuous trajectories of ships far away from coasts are transmitted through using the short message function of the Beidou Satellite System. With the compression method adopted, ships of whichthe navigation speeds are under 40 knots can transmit 30 coordinate pairs per minute, that is, transmit one coordinate pair every two seconds; the navigation distance of ships of which the navigationspeeds are 20 knots is 80 meters every two seconds; the navigation distance of ships of which the navigation speeds are 40 knots is 160 meters every two second; and therefore, the authenticity of thecontinuous trajectories of the ships is improved by 15 times, transmitted coordinate sequences can truly record the continuous running trajectories of the ships, and the real-time navigation positionsof the ships can be effectively reflected when the running trajectories of the ships need to be replayed. The method has the advantages of reasonable design, simplicity, high feasibility, convenientuse, quick and effective transmission, stable and reliable performance, wide application and remarkable application effect.

The invention discloses a gateway system of Internet of things, which comprises a main control module, a data protection module, a power management module, an audio and video acquisition module, a man-machine operation interface module, a communication interface module and a storage interface module; all the modules are connected through a system bus; and the system bus is used for sensing a data signal which is sent by a sensing level to the main control module, and sends out an instruction signal which is processed by the main control module. The gateway system of Internet of things has low power consumption and a small size, can adapt to various application occasions, has high stability and very flexible expansion, can adapt to various sensing networks and communication networks on a bottom level, and solves the problems of audio and video acquisition, compression and transmission with the lowest cost.

The invention discloses a rail transportation ticket-card processing intelligent system, which comprises a sorting center and an automatic ticketing system for a plurality of rail transportation lines. The sorting center comprises a set of service computers, and the automatic ticketing system comprises a set of equipment computers and a ticket-card processing intelligent terminal connected with the equipment computers; and the card processing intelligent terminal is used for processing of ticket transaction flow, issuing of single ticket transaction keys, online authentication of value-stored ticket recharge and generation and verification of transaction logs. The sorting center also comprises an encryption computer which is connected with the ticket-card processing intelligent terminal and is used for receiving an encryption certification request of the ticket-card processing intelligent terminal; and the equipment computers are used for transmitting service commands to the ticket-card processing intelligent terminal and receiving the service command processing result. The modification of the ticket-card processing service is realized through the online update function of the parameters or ticket-card processing programs and the maintenance cost due to the updated card processing programs is reduced. The invention also discloses a data encryption auditing method.

The invention discloses a space-ground-air integrated coordinated search and rescue system suitable for complex mountain scenic areas, and relates to the technical field of tourism safety. The three-dimensional rescue mode of multiple dimensions is erected, and a rescue auxiliary information system acts as a decision command hub so that integration and coordination of a search and rescue technology platform are facilitated, and a tourism safety guarantee technology integrated framework for the complex mountain scenic areas can be formed. Vital sign information is acquired through a front-end sign sensor, and a stable and reliable communication link is established by using the "space-air-ground" coordinated search and rescue communication system so that the problem of transmission of the search and rescue signals of the complex mountain scenic areas can be solved, finally the system is connected to a background server side to process and analyze emergency rescue decision information and thus the "space-air-ground" (integrated) coordinated search and rescue command mode for the complex mountain scenic areas is established.

The invention relates to a pipeline leakage acoustic emission signal processing method based on compressed sensing and HHT in a mask signal method. The method can be mainly applied to leakage acoustic emission signal detection of pipelines and boilers. The method mainly includes the processing steps that firstly, acoustic emission original signals are obtained, and high-frequency noise exceeding a leakage acoustic emission signal frequency domain is filtered out by means of a digital filter; secondly, a compressed sensing theory is brought in to carry put compressed sampling on leakage acoustic emission signals; thirdly, the compressed signals are precisely reconstructed through an OMP algorithm; fourthly, EMD of the mask signal method is adopted to decompose the acoustic emission signals, and components of different frequency in the signals are sorted out from high frequency to low frequency one by one; fifthly, Hilbert transformation is conducted on the frequency components of the acoustic emission signals to determine starting time and ending time of the acoustic emission signals.

The invention discloses a transmission method and device for a preferential warning message in machine type communication. The transmission method comprises the following steps that: a machine type communication device determines the preferential warning message; the machine type communication device carries the preferential warning message in a non-access stratum message; and the machine type communication device transmits the non-access stratum message. The method and the device solve the problem of transmission of the preferential warning message, and overcome the defects in that the preferential warning message is transmitted by a short message service.