980results about How to "Increase data transfer rate" patented technology

An optical communication system using a high altitude tethered balloon 10 that operates above most clouds and atmospheric turbulence. An optical communication system includes a balloon 10 with an optical communication payload 30, a fiber optic cable attached to the tether 12, an automated winch system 14, and a ground station 28. The balloon 10 is designed for sustained flight at, and recovery from, high altitude using the automated winch system 14. An acquisition, tracking and pointing (ATP) system 22 enables a balloon-based optical transceiver 24 to maintain line-of-sight optical communications with an overhead satellite 34. The optical link between the satellite 34 and the balloon 10 is an open channel. Data is transmitted to the ground station 28 from the balloon 10 through the secure fiber optic closed channel attached to the tether 12.

The invention discloses an intra-cell device to device direct communication method based on user device relay. According to the method, when a first device and a second device in the same cell need to be communicated with each other, if a ProSe server finds the distance between the two devices is too far to meet the distance requirement of device to device communication, the ProSe sends a request message for searching for an available relay device to an eNB (evolved node base) ; after receiving the request message, the eNB searches and feeds a result back to the ProSe server; the ProSe server selects a proper relay device by using the feedback result, and sends a beacon resource request to the eNB; the eNB respectively allocates beacon resources for the first device and the relay device as well as the second device and the relay device, and the relay device and the second device notify the eNB of a communication quality detection result; device to device communication scheduling is performed; after finishing service transmission, the communication devices release the device to device resources. According to the method, the communication is performed in a device to device relay mode, sending power is reduced, user device energy is saved, and the system performance is improved.

The invention discloses a resource pool configuration method and a resource pool configuration equipment. The method comprises steps that a physical sidelink second control channel (PSSCCH) resource pool is configured; and resources of the PSSCCH resource pool are utilized by the user equipment (UE) carrying out device-to-device communication to bear and sent the feedback control information of a physical sidelink.

The embodiment of the invention provides an obtaining method of control channel resources. The method includes: first UE obtains a PSSCCH resource; and sidelink feedback control information is sent on the obtained PSSCCH resource. A PSSCCH is set, and the PSSCCH resource is indicated to the first UE so that the first UE bears and sends sidelink feedback control information on the obtained PSSCCH resource and provides reference information used by data transmission resources for second UE or network side equipment. The embodiment of the invention also provides user equipment and network side equipment.

The invention relates to an SF6 high-voltage circuit breaker intelligent monitoring and health management system which comprises hardware and software, wherein the hardware is divided into a lower computer and an upper computer; the lower computer hardware comprises an intelligent control and processing unit based on an FPGA and an ARM, a data acquisition unit, a data storage unit, an intelligent control output unit and a CAN bus communication unit; the upper computer hardware consists of a monitoring center server unit and a PCI 1680U board card; and the communication between the upper computer and the lower computer is realized by a CAN bus network. The software is also divided into a lower computer and an upper computer, wherein the lower computer software is in charge of driving the lower computer hardware to complete mechanical, electrical and insulating state data acquisition and feature extraction, realizes intelligent reasoning and intelligent control by combining system information, and drives the CAN bus communication unit to send the result obtained by processing into the upper computer; and the upper computer software is in charge of driving the PCI 1680U board card of the upper computer to complete communication, and realizes the man-machine interaction interface and intelligent monitoring information management. The system realizes the comprehensive monitoring for the SF6 high-voltage circuit breaker state and performance.

The related data bus bridge comprises: a physical interface connected with external standard device to transmit data according to different logic channel, a data link unit to execute HDLC protocol for data on different logic channel, a FIFO unit for data buffer, an arbitrating mechanism unit to ensure physical interfaces exclusive visit the share data in memory and make the data read and write accord with protocol specification, and a DMA control unit to build high-speed data transmission between physical interface and physical memory. This invention is real-time and reliable, and fit to negotiate control device and monitor device.

The invention discloses an Internet of Vehicles deployment system based on fog computing and relates to the field of Internet of Vehicles deployment and planning. A road side unit RSU collects vehicle traffic information and sends the information to fog equipment; the fog equipment processes and forwards the vehicle traffic information and temporarily stores the vehicle traffic information; and the fog equipment uploads the stored vehicle traffic information to a server cluster, and the server cluster controls the vehicle traffic information through computation and analysis of a big data result and makes a reasonable traffic strategy. According to the system, the fog equipment is introduced to the edge of the network, and meanwhile, the fog equipment temporarily computes and stores the vehicle traffic information, so that the bandwidth resources are saved and the data transfer rate is improved.

The invention discloses a multiple terminal cooperative communication method in a cognition wireless network, comprising the following steps: all source nodes, destination nodes and relay nodes are used for respectively determining currently available communication channels by spectrum sensing; the source nodes are used for selecting the relay nodes in a traversal manner and distributing a directtransmission channel, a multiplying channel and a relay transmission channel according to intersection characteristics of a perceptive available communication channel; channel estimation is carried out on the multiplying channel and the relay channel of the relay nodes according to channel allocation condition and equivalent signal to noise ratio and equivalent channel capacity are obtained according to a normalization channel capacity formula and the calculation results of the equivalent channel capacity are returned to the source nodes; the relay node with the largest equivalent channel capacity is selected as the optimal relay node for communicating with the source node and the destination node; and finally, transmitting power of the nodes in different channels are allocated. In the invention, service data can be sent by various transmission modes in a parallel manner, thus preferable QoS guarantee can be provided for the network, power consumption is reduced and network survival time is lengthened.

The invention discloses a communication method and a communication device for a high-speed real-time industrial Ethernet. Data transmission is performed by a total frame mode; and the method comprises the following steps of: analyzing an address of a slave station data field in a data message; and performing data switching on a corresponding field in a frame by each slave station after address matching; and thus the aim of noncompetitive data transmission is fulfilled and the real-time requirement of a system is met. The method of the invention is particularly implemented through the communication device for a high-speed real-time bus consisting of a normal network card chip and a Field Programmable Gate Array(FPGA), wherein the FPGA is mainly used for receiving, analyzing and forwarding a data packet according to a transmission protocol; the data frame of the method and the device can timely arrive at target end equipment, so the real-time requirement of the data transmission is met;the mechanism for the data transmission is that the receiving, the analyzing and the forwarding are simultaneously performed without competition or contention; the real-timeness is achieved; and a general Ethernet chip is used as a physical layer, so the transmission speed is improved compared with that of the conventional industrial buses.

The invention discloses a communication method of serial real-time bus special in electricity, comprising the following steps that: 1) a line coding of a physical layer adopts a CMI signal inversion code or a 4B5B coder and decoder for receiving and dispatching serial data, and the receiving end adopts a digital phase-locked loop to extract clock from the received code stream; 2) a link layer adopts a HDLC of high-level data link control protocol to achieve the generation of the data frames, the check of the CRC hardware and the sign of the temporal information; 3) an interface control layer realizes the interconnection interface with an upper layer DSP or a processor such as a CPU and the like, mounts the transmission channels on the external bus of the processor, and expands a pluralityof special serial data bus for the processor, thereby achieving the functions of the buffering of the data, the sending of command control and the receiving of the state feedback. The invention adopts the serial communication technique and the differential signal transmission, and the receiving end extracts the clock automatically with strong disturbance resisting and less generation of error code.

The invention provides a data transmitting method for network device based on multi network card, which includes: the virtual network card of the network device based on multi network card is created; the address of at least one physical network card in the network device is acquired; the address of the virtual network card is arranged as the address different to the acquired address of at least a physical network card; the network device carries on data transmission according to the virtual network card with different address, and the physical network card; the invention also provides a data transmitting device of a network device based on multi network card, which includes: virtual network data memory model, address setting model, data transmitting model; the invention saves the network device resources, upgrades the data transmitting speed.

The invention discloses a method and a device for dynamically controlling discontinuous reception of UE, the method comprising: when the UE initially establishes a link, the network side informs the UE to execute parameters to be used in a discontinuous reception process through a downlink signaling; during a service linking of the UE, after the end of each scheduling moment, the network side determines how to dynamically adjust the discontinuous reception process of the UE according to a discontinuous reception process executed by the UE at a preceding moment and the number of data packets to be transmitted in the service queue created for the UE; the network side sets a DRX mark for instructing the UE to change its discontinuous reception process according to the method and the result of determining how to adjust the discontinuous reception process of the UE, and transmits the set DRX mark to the UE in an open state of the receiver of the UE; the UE executes a different discontinuous reception process according to the received DRX mark and self-adaptively adjusts the parameters in the discontinuous reception process.

The invention relates to a multi-frequency carrier aggregation WIFI data transmission method and device and a terminal device. The multi-frequency carrier aggregation WIFI data transmission method comprises the following steps: when the WIFI networks covering the terminal contain a plurality of signal frequency bands, controlling the WIFI channel operating in the frequency bands in the terminal enter into the enabled state at the same time; establishing a communication link with each one of the signal frequency bands mentioned above; using the established communication links to transmit the data together. Thus, the transmission bandwidth is widened, and the data transmission rate is improved without increasing the antenna; meanwhile, according to the embodiment of the invention, the weight ratio of the first information flow of each communication link is calculated according to the signal transmission rate of each communication link; and the WIFI data to be transmitted is allocated to each communication link according to the first information flow weight ratio of each communication link; therefore, the information flow weight of each signal frequency band can be flexibly configured, the information capacity is maximized while ensuring the communication quality, and the spectrum resources can be better used.

The invention relates to a high performance DMA on an embedded type processor chip. The high performance DMA comprises a data buffer used for caching the data read from an on-chip memory, the data sent to a bus interface unit, the data received from the bus interface unit, and the data written into the on-chip memory; a data big-endian and little-endian convertor; a DMA controller used for initializing a state register, a control register, an initial address register and a data size register; a DMA transmission address generating logic module used for automatically calculating the transmission address of the next data on an on-chip external memory and generating chip selection and read and write signals of the on-chip memory according to the on-chip address, and simultaneously updating a data size counter till the counter changes to zero; and a bus transmission transmitter and receiver. The high performance DMA has the advantages that the development difficulty is low, the cost of the hardware is low, the transplantation is convenient, the expansibility is flexible, the data transmission speed is high, and the performance of the processor is greatly enhanced.

This invention discloses a method for TD-SCDMA compatible with OFDM technology, which carries out serial parallel conversion to the due-out high speed serial code sheet sequence and generates multiple parallel sub-sequences to be modulated to multiple sub-carriers for parallel transmission to reduce the transmit rate of each channel so as to increase the symbol period and weaken the influence of multi-channel interference, at the same time, it uses the circular prefix as the protection interval, the interference among symbols are reduced greatly and the orthogonality among channels are ensured.

The invention provides an intelligent vehicle-mounted communication informatization system based on a 3-generation (3G) technology and a cloud system. The intelligent vehicle-mounted communication informatization system comprises a master control module, a wireless communication module, a positioning module, a sensor module and other functional modules, wherein the master control module comprises an advanced Risc machine (ARM)-based micro controller which is used for coordinatively controlling other modules of the system, and an intelligent embedded operating system; the wireless communication module is a wireless access module for accessing the system to the Internet based on various 3G technologies and is electrically connected with the master control module; the positioning module is a module for supplying a positioning function to the system based on positioning systems, such as a global positioning system (GPS), a beidou positioning system and the like, and is electrically connected with the master control module; the sensor module is a module for supplying a theftproof function based on an ultrasonic sensing technology and is electrically connected with the master control module; and other functional modules are modules for realizing main functions of the system. The invention also provides a communication method applied to the system. The system has the characteristics that: the GPS navigation speed is higher, the cloud system can be widely applied, and the whole vehicle-mounted system is higher in intelligentization level.

The invention provides a propagation environment adjustable and controllable method and device, electronic equipment and a computer readable storage medium, and relates to the technical field of wireless communication. The method comprises the following steps: 1, an RIS is deployed between a multi-antenna base station and a user terminal; the signals emitted by the base station are reflected to the user; specifically, the multi-antenna base station forms a matrix according to a preset digital beam, digital beam forming processing is carried out on the emission signal; a transmitting signal pointing to the RIS is obtained; the RIS carries out analog beam forming processing on the incident signal according to a preset phase; the incident signals are reflected to a plurality of single-antennauser terminals; according to the method disclosed in the embodiment of the invention, the RIS is deployed between the base station and the user; the RIS is used for reflecting the signals sent by thebase station to the user, the propagation environment of the base station signals is changed, the signals generated by the base station can avoid obstacles for transmission, and the propagation environment of the signals is remodeled to be in an ideal state; the problems of signal fading, obstacle shielding and the like are effectively solved; data transmission rates are increased.

The invention discloses a D2D communication method. The method comprises the step that control information and data information are born on a physical resource block, wherein the control information and the data information need to be sent; the control information comprises at least one of a modulation and coding scheme MCS, a redundant version RV and a new data instruction NDI, and at least one of the MCS, the RV and the NDI is mapped on a high frequency part RE in the physical resource block; the data information is mapped on a blank RE except the RE on which the control information is mapped in the physical resource block; and the physical resource block is sent to a target user device in a D2D communication link between devices. The invention further discloses a D2D communication system. According to the embodiment of the invention, by rationally configuring an uplink physical channel of D2D communication, the utilization rate of a high frequency spectrum and the data transmission rate can be improved.

The invention relates to the field of indoor positioning and aims at solving existing problems in the prior art. The invention provides a UWB-based positioning device and a railway station children positioning method. Based on the UWB technology, the position positioning is carried out. Based on the UWB positioning system of an extensible base station, the high-precision positioning of children in a large range can be realized. Therefore, children can be effectively prevented from getting lost. The positioning system is mainly used for positioning children in a waiting room. According to the invention, a positioning label sends the positioning information to a base station unit in real time within the detection range of the base station unit. The base station unit establishes a coordinate system based on the mutual positioning of a main base station and an auxiliary base station, measures the real-time distance of the positioning label corresponding to the positioning information sent by the positioning label in communicant with the base station unit, and transmits back the obtained real-time distance information to a monitoring terminal. The monitoring terminal analyzes the positioning position of the corresponding positioning label according to the distance information uploaded by the base station unit. If the positioning position of the positioning label exceeds a threshold value range, an alarm signal is sent out.

A method and a device for transmitting and receiving data are provided. The method comprises the following steps: A: data to be transmitted are interleaved after being divided, randomized and conducted forward error correction coding on the transmitting terminal. B: QAM maps the interleaved data into corresponding QAM constellation points according to the sub-channel bit and energy distribution parameter. C: after the QAM mapping treatment, the data are generated into frequency field data frame, which are then conducted IFFT transformation and generated into OFDM signals. D: insert cyclic prefix into the OFDM signals, which are then generated into baseband analog signals after digital to analog conversion; the baseband analog signals are transmitted to the receiving terminal in the service sub-channel of the logging cable. By adopting the method and device of the invention, data transmission rate in present logging cable is greatly improved, which in turn meets requirements of the large data amount transmission of under-well instruments.

The present invention discloses a hybrid automatic retransmission method of multi-carrier high-speed uplink grouping access, and comprises the following steps: A, the base station and the terminal respectively build a hybrid automatic retransmission request HARQ entity for each usable carrier of the terminal; the HARQ entity is responsible for managing the HARQ process corresponding to the carrier; B, the network side distributed uplink resources for the terminal; and C, the terminal assembles data packets according to the uplink resources distributed by the network side, determines the used carrier of each data packet, and adopts the HARQ entity corresponding to the carrier to select the HARQ process. The present invention also discloses a system and a terminal, which are used for realizing the hybrid automatic retransmission of the multi-carrier high-speed uplink grouping access. Thus the method leads to more flexible adoption of the HARQ process and more flexible data transmission, and can be used for the transmission of the multi-carrier high-speed uplink grouping data.

The invention discloses a data transmission method and device, a data receiving method and device, a terminal and a base station of non-connected UE. The data transmission method comprises the steps that pre-configuration information is received; and according to the pre-configuration information, transmitting the to-be-transmitted data packet by using common resources. According to the technicalscheme provided by the invention, the data transmission delay of the non-connected UE can be reduced.

The invention provides a method for selecting a full-duplex antenna in a multiple-in multiple-out (MIMO) system. The method comprises the following steps of: 1, performing self-interference elimination on receiving antennae at two communication ports in a full-duplex antenna system to acquire corresponding self-interference channels; 2, performing equalization processing on signals received by the receiving antennae at the two communication ports to acquire postprocessing signals of corresponding transmitting antennae; 3, when distribution of the self-interference channels corresponding to the receiving antennae at the two communication ports accords with independent identically distributed Rice distribution, calculating the postprocessing signal to interference and noise ratio of the receiving antennae at the two communication ports; and 4, traversing all antenna pairs between the two communication ports based on antenna selection criteria to determine a final antenna matching scheme. The advantages of a full-duplex antenna technology and an MIMO technology are combined, a scheme with gain is selected from all possible antenna matching schemes, channel capacity is improved, and the whole performance of the system is improved.

The invention provides a multichannel direct memory access (DMA) controller which comprises a configuration module, an arbitration module, a read instruction generating module, a write instruction generating module, a bus high-speed carrying interface module and an externally-arranged request interface module. The multichannel DMA controller can carry complex-format data and increase data transmission rate so as to reduce burden of a CPU (central processing unit) and improve system performance.

The invention relates to an application layer multicast service realizing method, a terminal and a system thereof. The method comprises the steps that: a node is added in a multicast network; father node information, a brother node table, a father and brother node table and a child node table are established locally; the node information of a father node is collected for updating the local father node information; the child node table of the father node is obtained for updating the local brother node table; and the brother node table of the father node is obtained for updating the local father and brother node table. The terminal comprises a father node information storage module, a brother node table storage module, a father and brother node table storage module, a child node table storage module and an information updating module respectively connected with the modules. The system comprises a root node and adopts a plurality of realizing terminals as leaf nodes. The invention can avoid the influence of frequent change of the multicast network, promote the reliability and extendibility of the multicast network, link brother nodes for data transmission, fully utilize exported broadband and improve data transmission efficiency.

The method comprises: the base station allocates the dedicated resources for the edge users, and ensures an overlapping between the user-dedicated resources in adjacent cells or sectors; user monitors and detects the downlink signals of current cell and sector or adjacent cell and sector, which contains flag information, to get downlink signal detection information; estimating the anti-interference status of user and the interference to the users in adjacent cell or sector; according to the result, allocating the right of using the resources, and then scheduling and allocating the resources; finally, adapting the uplink of user.

The invention discloses a peripheral component interconnect (PCI) Express-based multiband infrared image real-time acquisition system and a PCI Express-based multiband infrared image real-time acquisition method. The system comprises an embedded host with a PCI Express x8 channel and a real-time image acquisition card, wherein the real-time image acquisition card comprises a field programmable gate array (FPGA) chip, a high-speed caching double data rate 2 synchronous dynamic random access memory (DDR2SDRAM), differential I / O interfaces connected with a multiband infrared detector and a PCI Express x8 card insertion part. The acquisition method for the system comprises that: the FPGA chip of the acquisition card simultaneously reads multiband infrared image data from the differential I / O interfaces, caches the read multiband infrared image data into the DDR2SDRAM, performs PCI Express bus bandwidth allocation after finishing acquiring an image frame, transmitting the data of the image frame to the host by a PCI Express x8 bus for real-time display and storage, and simultaneously caches the acquired data of the next image frame. The invention has the advantage of integrating a plurality of infrared band data discrete acquisition systems to form the multipath, high-speed, synchronous and real-time acquisition system which is miniature and highly portable.

The invention discloses a data transmission method, a data transmission device and a communication system, relates to the field of communication and solves the problem that data transmission between user equipment and a packet data network by a household access system frame provided by the prior art occupies too many network resources. The technical scheme provided by the invention is that a nodewith a service shunting function establishes correspondence between the service flow of the user equipment and a wireless access bearer and directly sends the received service flow of the packet datanetwork to the user equipment by using the wireless access bearer according to the correspondence or directly forwards the service flow, which is received by the wireless access bearer, of the user equipment to the packet data network. The method, the device and the system can be applied to a household access system and common macro networks such 3G or long term evolution (LTE).

The invention provides a satellite mobile communication method fused with a 5G network, and the method is characterized by comprising the following steps: carrying out the modeling of a satellite mobile communication scene, and carrying out the quantitative description of the system composition, a network structure, a communication link, a transmission system, and a working process; establishing high and low frequency networking; establishing satellite-ground cooperative cognitive wireless communication in a dynamic spectrum environment; performing high-dynamic compensation on Doppler frequency shift in mobile satellite communication; and realizing multi-user non-orthogonal multiple access in a mobile satellite communication environment. The method has the beneficial effects that the system effectively utilizes various spectrum resources to improve the data transmission rate and the system capacity; idle unlicensed spectrum is utilized by the system, and the problem of spectrum shortage is solved; the 5G air interface waveform is optimized to enable the 5G air interface waveform to adapt to high dynamic characteristics in a satellite communication scene; the spectrum utilization rate and the system capacity are effectively improved; the problems that a satellite mobile communication system is special in topology, difficult in routing and large in user service end-to-end time delay are effectively solved.