612results about How to "Guaranteed transmission efficiency" patented technology

The invention discloses a partition tree based multihop wireless self-organizing networking method, including the deterministic process for all partition root nodes, the interconnecting process between root nodes, the interconnecting route maintenance process between root nodes, the creation process for the partition tree, the dynamic maintenance process for the partition tree and the partition tree based routing process. Compared with the prior wireless network technology, the novel multihop wireless self-organizing networking method of the invention has the advantages of good expansibility, controllable network structure scale, little system overhead and high routing efficiency, thereby effectively improving network transmission efficiency and network performance.

The invention provides a distributed file system and a data access method thereof. The system comprises at least one client server, a metadata central server, at least one metadata server and at least one object server, wherein the at least one client server is used for receiving an access request from a client; the metadata central server is used for returning a currently available global uniquemetadata server identifier of the metadata server to the client server according to the access request of the client; the at least one metadata server is used for receiving file information transmitted according to the global unique identifier of the metadata server by the client server, and returning a currently available global unique object server identifier of the object server to the client server according to the file information; and the at least one object server is used for generating an access result in response to access contents transmitted according to the global unique identifier of the object server by the client server, and returning the access result to the client by the client server. The distributed file system and the data access method thereof greatly improve the reliability of the system at the same time of not influencing the data transmission efficiency.

The invention discloses a terminal software online upgrading system and a terminal software online upgrading method based on a cloud computing environment. The method specifically comprises the following steps that a management and maintenance operating platform makes a software upgrading request to a cloud node management strategy server; the cloud node management strategy server selects a plurality of embedded cloud terminals as cloud node servers according to certain strategies; the cloud node management strategy server issues a cloud node server information list to the management and maintenance operating platform; the management and maintenance operating platform uploads a software packet to corresponding cloud node servers; the cloud node management strategy server informs embedded cloud terminals and downloads the cloud node server information list to the embedded cloud terminals; and the embedded cloud terminals download software packet data from the designated cloud node servers and upgrade software. By adopting a cloud computing technique and a cloud computing method, the software upgrading of the embedded terminals on a large scale can be supported without adding special software upgrading servers, the stability is high and the upgrading effect is better if the embedded terminals are more.

The invention discloses a novel laser confocal microscopic endoscope with high resolution, a telescopic image transmission system is used for replacing optical fiber bundles or a single optical fiber, the laser is coupled into a tissue in vivo, a reflected light or a fluorescent signal is coupled into a detector in vitro, a fluorescent image with high resolution and contrast is obtained, meanwhile an endoscope probe diameter is reduced; a confocal scanning mechanism is arranged in vitro, the high performance confocal scanning is obtained, meanwhile the dimension of the endoscope probe can not be increased, and the confocal scanning mechanism is compatible with an existing hard tube endoscope, thereby implementing the high-performance histopathology diagnosis in vivo.

The estimation method for time-frequency joint channel in TDS-OFDM space-frequency code comprises: 1) the transmission antennas of T1 and T2 executes space-frequency diversity code; 2) for some rule, alternative transmitting the TPS information after error correction coding carried on OFDM sub-carrier; 3) taking time-frequency joint channel estimation with time-domain PN sequence and TPS information; 4) space-frequency decoding to recovery transmission information. This invention changes little to original transmitter system, simple, fast and accurate, and supports soft-failure to improve reliability.

The invention discloses a signal transmission method, device and system. The signal transmission method comprises the step that a base station transmits a synchronization signal block according to a predetermined synchronization signal block configuration mode, wherein the synchronization signal block contains a synchronization signal, or the synchronization signal block contains a synchronizationsignal and a message signal, there is a pre-defined corresponding relation between the synchronization signal and the synchronization signal block configuration mode, and the message signal comprisesat least one of a physical broadcast channel, a paging downlink control message, a paging message, a control channel and a data channel.

The utility model discloses to a method for mobile terminal to download files, which comprises the following steps: file searching request is sent to a searching server by the mobile terminal, and the search result comprising download address received by the mobile terminal from the feedback of the searching server. The mobile terminal then communicates with the designated file server and start file downloading. The utility model has advantages that network resource can be utilized really by applying the method. As the method is run in background, other operations of users are not affected, thereby the method is very convenient; the success rate of file downloading can be maximally ensured through optimal combined application of aggregation of addresses, proxy download and file segmentation; corresponding the method, the utility model also provides a device for file download, and a mobile terminal comprising the device.

The invention provides a data transmission method based on sound wave. The method comprises the following steps: to begin with, obtaining original data; then, enabling the original data to be encoded into 17.5 kHz-19.5 kHz audio signals according to a preset frequency mapping table; and finally, playing the audio signal to enable the audio signal to be sent to a receiving end in the form of a sound wave signal, and to be received, decided and processed by the receiving end. Compared with the prior art, the method sends near ultrasonic signals in the 17.5 kHz-19.5 kHz high frequency band, thereby reducing influence of environment noise on the sound wave to the maximum degree, and preventing signal distortion and data loss; and the method achieves an optimum balance effect among availability to most of intelligent mobile phones, environment noise processing and high and low near ultrasonic waves tolerable for ears, thereby ensuring reliability and safety of data transmission, transmission efficiency and hearing comfortableness.

The invention provides a method, a device and a system for improving data transmission quality. The method comprises the following steps: the redundancy processing for a transmission message is carried out according to the classification of transmission data. The redundancy processing for the transmission message is concretely carried out in such a way that the transmission message carries the content of another transmission message before the transmission message. In the invention, the redundancy processing for the transmission message is carried out by classifying transmission data according to the classification state of the transmission data, thus, under the condition that data packets are lost, the lost data packets can be recombined and recovered; and under the condition that the data packet losing rate is determined, the transmission quality and the transmission efficiency of the data can be further ensured.

The invention belonging to the technique area of the computer multi-media includes following steps. (1) Nagle algorithm for closing the sending end of the stream media. (2) Deleting the transmissio control function of the real-time transmission control protocol in the RTPprotocol as well as changing the content of the sequence number parameter space, making the load content be changed from the sequence number to the length of the data message. (3) According to the changed RTP data format, the sending end transmits the stream media data message. (4) Based on the length of the data message indicated by the parameter at the head of the RTP data message, the receiving end receives sectionally RTP massage in TCP message. With the received and not integral RTP messages being assembled, the data in the assembled RTP message are decoded. The invention increases the transmission reliability of the stream media.

The invention discloses a wave time division mixed multiplexing passive optical network system, which comprises a central office terminal, a client, and an optical distribution network arranged between the central office terminal and the client, wherein the central office terminal comprises an optical line terminal; the client comprises at least one optical network unit; and the optical network unit comprises an uplink processing unit which is used for loading uplink modulation signals to form uplink optical signals with specific wavelength and inputting the uplink optical signals into the optical distribution network. On the premise of ensuring high bandwidth and a large user number and meeting budget of the optical power of the whole network, low-cost colorless optical network unit (ONU) technology without multi-wavelength light source is used, and the passive characteristic of the whole optical distribution network (ODN) is kept, so the networking cost is obviously reduced.

The invention discloses a vehicle-ground broadband access method based on a wireless mesh network technology, in which an access method for wireless mesh points consist of gateway nodes and a plurality of access points is specified in a layer 2 address-based layer 2.5 protocol between a layer 2 protocol and a layer 3 protocol. The method comprises the following steps: a, creating and updating a tree-based routing table for each wireless mesh point, which is used for recoding physical addresses for a parent node and a child node, and creating and updating a proxy table for each wireless mesh point, which comprises table entries of all vehicle-carried subnet point below the tree-based routing table of the wireless mesh point; b, data frame transmission, which realizes data format conversion, data transmission, data receiving and forwarding between a wireless mesh network and a vehicle-carried subnet as well as between wireless mesh gating nodes and a public network through the wireless mesh points; c, node switch, in which channels of the same frequency are adopted for access channels of all wireless mesh point for realizing seamless switching between the nodes. The method has the advantages of convenient networking, low cost, high-speed for data transmission, high reliability.

The invention discloses a method, a system and a device for data transmission, belonging to the filed of communication. The method comprises the following steps: a radio network controller RNC enables the data to be transmitted to be preserved to be backup data in a preset buffer memory, and the data is carried with serial numbers; the data to be transmitted is transmitted to the carrier frequency of a base station through a preset channel corresponding to the carrier frequency provided by the base station; each carrier frequency at least corresponds to one channel, and different carrier frequencies correspond to different channels; the transmission state of the data is obtained; the correctly transmitted data preserved in the preset buffer memory in a backing manner is deleted according to the transmission state of the data; the backup data which is not correctly transmitted in the preset buffer memory is obtained, and the channel is selected according to the allocation principle to transmit the backup data which is not correctly transmitted. The system comprises the RNC, the base station and a terminal. By the method provided in the embodiment, the invention can reduce the transmission time delay of the data SDU as possible, ensure the efficiency of data transmission and avoid the unnecessary RLC layer retransmission.

The invention discloses an adaptive retransmission and signature segmented embedding data transmission method, which is characterized by comprising the following steps of: matching the identity information of a user in a safety database by using a server, and finishing the method if the identity information of the user fails to be matched; performing mutual identity authentication on the user and the server, and finishing the method if the mutual identity authentication of the user and the server fails; and performing data transmission, and in a data transmission process, performing the steps of performing dynamic identity authentication on the server and the user at random time intervals, terminating connection if the dynamic identity authentication of the server and the user fails, embedding a signature in a segmented way, judging whether transmitted data has an error or is lost or not in an acknowledgement way, performing data retransmission if the transmitted data has the error or is lost, judging whether the data transmission is finished or not, and terminating the connection when the data transmission is finished.

The invention relates to a cluster head selection method based on heterogeneous Internet of vehicles clustering. The cluster head selection method based on heterogeneous Internet of vehicles clustering includes the following steps: 1) according to current vehicle distribution on a road, each base station performs maximized cluster member clustering at a maximum transmission distance defined by IEEE 802.11p, and transmits the clustering information to each vehicle; 2) a vehicle broadcasts the own vehicle motion information to all vehicles in the cluster and receives the vehicle motion information of other vehicles in the cluster at the same time, and calculates values of clustering attributes of the vehicle, wherein the clustering attributes include relative confidence distance, relative mobility, transmission reachable rate, and channel quality indication between the base stations; 3) the each base station obtains the weight of each clustering attribute through an analytic hierarchy process; and 4) the each base station selects the optimal node as the cluster head through a description preference method. Compared with the prior art, the cluster head selection method based on heterogeneous Internet of vehicles has the advantages of reducing the network packet loss rate, improving the cluster structure stability, improving the link transmission rate between the cluster head and the eNodeB and the resource utilization ratio, and the like.

The invention discloses a group chat communication system and a method thereof. The system comprises a first user module, a user name / nick name identity switch processing module, a nick name identity distribution module and second user modules, wherein the first user module is used for managing information on users, including group managers and other group members, who have been participated in a group chat through a client; the user name / nick name identity switch processing module is used for responding to a user name / nick name switching request initiated through the client and re-calculating identities of the users, participating in current group chat communication, by a preset algorithm in a server; the nick name identity distribution module is used for distributing identity information, which is calculated by using the user name / nick name identity switch processing module, to corresponding users existing in a current group chat session, so as to enable each user to correspondingly obtain a relatively unique identity, namely a nick name ID (Identity), in the current group chat; the second user modules are used for supporting the other group members to be in group chat communication with the first user module through the server. By adopting the system and the method, the users can protect personal information on the group members during the group chat and information generated during the group chat, and the security during information transmission is ensured.

The invention discloses a data transmission method, a relay node, a convergence server and a system, wherein the method comprises the steps of: 1) establishing a plurality of tunnel connections between the relay node and the convergence server through a plurality of wireless access network elements; 2) conducting logical link control packaging on uplink IP groups uploaded by a mobile terminal through the relay node to form an uplink logical link control message; and 3) sending the uplink logical link control message to the convergence server by the relay node. The data transmission method, the relay node, the convergence server and the system has good compatibility and good extensibility, the RN (relay node) supports a plurality of LTE (Long Term Evolution) wireless access network elements, only a link application layer is corrected, only the convergence server is added, and an air interface protocol is not required to be corrected.

A high-speed connector capable of transmitting 25G signals comprises a male-end plug and a female-end socket which are used in cooperation. The male-end plug comprises a male-end substrate and more than one set of signal terminal sets inserted in the male-end substrate, the signal terminal sets are arranged in the male-end substrate in a matrix mode, and the female-end socket comprises a female-end substrate and more than one chip units inserted in the female-end substrate. Each chip unit comprises two pairs of signal reeds for transmitting differential signals, three grounding reeds, an upper shielding piece and a lower shielding piece. The signal reeds and the grounding reeds are embedded in a chip plastic substrate respectively, and the two sides of the chip plastic substrate are respectively provided with one shielding piece. One grounding reed is arranged between two sets of signal reeds, the two sides of the two sets of signal reeds are respectively provided with one grounding reed, and two signal reeds in one pair are arranged in parallel. Through the special structure design, crosstalk of 25G transmission signals at ultrahigh frequency in the transmitting process still can be effectively prevented, and transmission efficiency of the signals is guaranteed.

The invention relates to the field of road traffic control, and particularly relates to an information processing method and apparatus based on an intelligent traffic cloud control system. The method comprises the following steps: a first node releases a subscription message to a control server, when the control server determines a preset condition indicated by the subscription message is satisfied, the control server returns IP field device acquisition information and a corresponding processing result to the first node, and the first node generates a corresponding cooperative control strategy or a local control strategy for the returned IP field device acquisition information and the corresponding processing result. Since the first node can acquire the returned IP field device acquisition information and the corresponding processing result of each control server according to demand, the adjustment effect of traffic conditions within a certain area can be improved, and the overall information transmission of the information processing method is reduced at the same time, thereby generating no information transmission congestion, and reducing the information storage quantity and the information calculation quantity of the central system while ensuring the transmission efficiency.

The invention discloses a quantum communication precise tracking system. The quantum communication precise tracking system comprises a large-stroke deflection reflector, a beam shrinking unit, a small-stroke deflection reflector, a quantum communication receiving module, a first color separation filter, a second color separation filter, a first focusing lens, a precise tracking detector, a second focusing lens and a super-precise tracking detector. After quantum light enters the beam shrinking unit through transmission of the large-stroke deflection reflector, the beam diameter shrinks, and then the quantum light reaches the small-stroke deflection reflector, is reflected through high reflectance of the first color separation filter and then enters the quantum communication receiving module at the back end, and then quantum light coding and decoding are completed; after beacon light enters the beam shrinking unit through transmission of the large-stroke deflection reflector, the beam diameter shrinks, the beacon light reaches the small-stroke deflection reflector and is reflected through high reflectance of the first color separation filter, and after the beacon light is split by means of energy of the second color separation filter, one way of light reaches the fine precise tracking detector after being focused by the first focusing lens, and the other way of light reaches the super-precise tracking detector after being focused by the second focusing lens.

The invention belongs to the technical field of information technology, and provides a local area network paperless conference office device and working method thereof. The device includes a client, a management side and a server; the client includes a conference information module, a file transfer and display module, a document labeling module and a calling service module; and the management side includes a conference information management module, a conferee management module, a conference site management module, a signing-in management module and a service management module. The local area network paperless conference office device provided by the invention performs role partitioning on user groups, presents conference files in the form of pictures, performs screen picture transmission based on a remote desktop technology, utilizes a keynote speaker application replacement mechanism to effectively and freely arrange a speaker sequence, storages individual screenshot data of users by virtue of the server, i.e., screenshot records can be browsed to review conference emphases even if a conference finishes, and the local area network paperless conference office device performs effective control of various processes in a paperless conference, and can enable the paperless conference to be relatively efficient and orderly.

The invention discloses a data transmission method and device which aim to solve the problems that in the prior art, in a data encrypting method, a sender and a receiver are required to conduct information interaction in advance, and the data transmission efficiency is lowered. The method includes the steps that after a sending terminal determines data required to be transmitted, a first random number and a second random number are generated, a secret key material and a salt value are generated according to the first random number and the second random number respectively, and finally a secret key is determined to encrypt the data; a receiving terminal receives the encrypted data while receiving a secret key material mark and the salt value, and a secret key is generated according to the secret key material mark and the salt value to decode the encrypted data. Accordingly, both the sender and the receiver do not need to conduct information interaction before data transmission, on the premise that data confidentiality is guaranteed, data transmission efficiency is guaranteed, and the safety of the data is improved.

The present invention discloses an electric energy and signal synchronous transmission method based on frequency splitting in an ICPT (Inductively Coupled Power Transfer) system, in the method, a transmission system with a primary side resonance circuit and a secondary side resonance circuit is adopted, a controller in the system selects a time-delay interference parameter according to a digital signal, and forms an output control signal on the reference of a primary side resonance current zero-crossing detection signal for outputting to a drive circuit module, thereby finally achieving the purpose that the system switches between two autonomous stable resonant frequencies according to the digital signal to achieve signal frequency modulation and transmission; in addition, the secondary side resonance circuit is additionally provided with a coupling coil and a signal extraction and recovery module, which can achieve the process of coupling and picking a signal from the secondary side resonance circuit and performing recovery through the signal extraction and recovery module to obtain the digital signal. The electric energy and signal synchronous transmission method of the present invention facilitates high-efficiency transmission of electric energy in the ICPT system while achieving reliable transmission of signals in the case of not changing a topological structure of a main circuit of the ICPT system.

The invention discloses a traffic violation reporting system and method based on cloud computing. The system comprises data acquisition nodes, a data reception node and a data identification node. Mobile phone Apps serve as the independent data acquisition nodes and are stored in a distributed manner to serve as the data reception node as a whole. The data reception node includes a cloud computing monitoring center identification system and an artificial identification node, wherein the cloud computing monitoring center identification system carries out preliminary data filtering through an automatic identification technology, and the artificial identification node finally examines data. The traffic violation reporting system serves as a supplement for a traffic monitoring system, and the Mobile phone Apps are adopted to serve as monitoring nodes, are available everywhere and flexible, and can conduct data acquisition anytime and anywhere. Distributed data storage services guarantees the data transmission efficiency and provides stable data storage services for the Apps. The automatic identification function of a cloud computing center preliminarily filters and orders the stored data, so the manual workload is reduced, and the examination efficiency is improved.

Provided are a monitoring system and an early warning method for a rock burst multi-parameter process. The method comprises the steps that (1) a mining activity peripheral region is monitored in a traditional rock burst monitoring method, and a dangerous region is determined; (2) sensing elements are distributed in the dangerous region; (3) the sensing elements are in wired connection with data communication base stations; (4) the data communication base stations are in wired connection with the adjacent data communication base stations and switching equipment; (5) the switching equipment is connected with an analyzing and processing unit through an optical fiber; (6) after the sensing elements start to work, collected data are transferred to the analyzing and processing unit through the data communication base stations and the switching equipment; (7) the analyzing and processing unit stores and analyzes the received data, and early warning of occurrence of rock burst is achieved according to comparison between the data and a preset danger index value. The monitoring system comprises more than two sensing elements, more than two data communication base stations, the switching equipment and the analyzing and processing unit. The early warning method and the monitoring system are low in cost, flexible in layout, and good in early warning effect.

The invention discloses a sub-packet transmission method. The sub-packet transmission method comprises the following steps: a sending terminal obtains channel condition information; transmission parameters comprising at least one of the optimal retransmission number j of sub-packets and the optimal sub-packet length Lsp are obtained by the channel condition information; and the sub-packets are controlled by the transmission parameters to send out. The transmission parameters can be adjusted according to the channel condition information to improve the throughput and ensure the transmission efficiency of the sub-packets.

The invention discloses a data transmission method, a data transmission device and a data transmission system. The method includes that a network side device configures a pointed radio network temporary identity (RNTI) for a terminal, wherein the pointed RNTI comprises a public RNTI for data transmission between the terminal and an opposite terminal; the network side device combines data which are sent to the terminal and the opposite terminal, and the combined data are disturbed by the public RNTI; and the disturbed data are sent to the terminal and the opposite terminal through the network side device. Through the data transmission method, the problem that when a new transmission scheme is adopted to carry out data transmission in a correlation technique, the terminal cannot accurately finish data interaction is solved, efficiency of the data transmission is ensured, and reliability of the data transmission is improved.

The invention relates to a three-dimensional multilayer waveguide mode multiplexing and de-multiplexing device and a preparation method thereof and belongs to the optical communication device technical field, in particular, a mode division multiplexing system. According to the three-dimensional multilayer waveguide mode multiplexing and de-multiplexing device and the preparation method thereof ofthe invention, a three-dimensional multilayer waveguide integrated structure is adopted, and therefore, the limitations of a traditional two-dimensional planar waveguide structure can be eliminated, the integration dimensions of the device can be increased, the integration and flexibility of the device can be enhanced, and the communication capacity of a system can be improved. The boundary of anyone side of the upper-layer waveguide of the three-dimensional waveguide is aligned with the boundary of any one side of the lower-layer waveguide of the three-dimensional waveguide, so that the direct three-dimensional coupling of a fundamental mode and a high-order mode is realized, and therefore, a defect that a traditional three-dimensional mode multiplexer fails to realize direct coupling ofmodes can be eliminated, and the structure and complexity of the device can be simplified. The device of the invention is prepared based on a mature CMOS process, so that high efficiency, low cost and mass production of the device can be realized. With the three-dimensional multilayer waveguide mode multiplexing and de-multiplexing device and the preparation method thereof of the invention adopted, the flexible three-dimensional coupling of the modes can be realized, a solid foundation is laid for on-chip mode multiplexing technology. The three-dimensional multilayer waveguide mode multiplexing and de-multiplexing device and the preparation method thereof can be further applied to the flexible mode routing of a mode division multiplexing network.

The embodiment of the present invention discloses a wireless charge receiver and a wireless charge method. The method comprises the steps that: a receiver uses a first oscillating circuit to receive pulse energy emitted by an emitter, wherein the first oscillating circuit comprises a first receiving coil configured to convert pulse energy and output electric energy; when a voltage value output bythe first oscillating circuit is increased to a first reference voltage value, the receiver sends a power transmission command to the emitter through a communication module to allow the emitter to send energy according to the power transmission command, wherein the first reference voltage value is a working voltage threshold value of a processor; and the receiver receives the energy emitted by theemitter according to the power transmission command through a second oscillating circuit. A new coil is arranged at the receiver to increase the coupling coefficient with the emitter in the Ping stage and improves the degree of freedom. After a preset voltage value is reached, the receiver uses the receiving coil to receive the energy transmitted by the emitter so as to ensure the transmission efficiency while lifting the degree of freedom.

The invention discloses dynamic scheduling methods and devices in a base station and UE. The UE monitors a first signal in a first time-frequency resource pool; the first time-frequency resource pooloccupies N time windows in the time domain; the N time windows and N antenna port groups are in one-to-one correspondence; the first signal is a physical layer signal; detection for X times at most iscarried out for the first signal; the detection for X times is separately for X RE sets; in the X RE sets, Y1 first-type RE sets exist; REs included in the first-type RE sets are positioned in N1 time windows; and the N1 time windows belong to the N time windows. According to the dynamic scheduling methods and devices in the base station and the UE disclosed by the invention, the Y1 first-type REsets are designed; furthermore, the first signal is transmitted on different antenna port groups; therefore, the first signal transmission robustness is improved; and thus, the control signal transmission performance and the overall spectral efficiency of a system are improved.