434results about How to "Meeting Communication Needs" patented technology

The embodiment of the invention discloses an information transmission method, device and system. The method is applied to user equipment (UE) in Internet of vehicles architecture. The method comprisesthe following steps: the UE obtains sidelink retransmission configuration information; and the UE carries out sidelink feedback or sidelink retransmission according to the sidelink retransmission configuration information.

The invention discloses a robot motion control system, relates to the technical field of robot motion control, and aims to solve the problems of poor universality, poor extensibility and poor system openness existing in the existing robot motion control system. A control terminal subsystem comprises a human-computer interaction interface and a working thread module; a server terminal subsystem comprises an instruction interpreter, a server and an interaction module; a user transmits an operation instruction through the human-computer interaction interface; the operation instruction is converted into an instruction which can be recognized by the instruction interpreter by using the working thread module and is transferred to the instruction interpreter through network; the instruction interpreter is used for converting the received instruction into a joint path command by calling MoveIt ! and releasing on a node of an ROS (Read Only Storage) server; a PMAC (Programmable Multi Axis Controller) interconnection module receives the joint path command from the ROS server and converts into a motion control instruction through a PMAC communication protocol and transfers to PMAC through network. The system has higher modularization degree and extremely strong universality and can be compatible with various multi-degree-of-freedom series robots.

The invention is applicable to the technical field of wireless communication, and relates to an unmanned aerial vehicle base station deployment method, terminal equipment and a computer readable storage medium, and the method comprises the steps: determining the initial deployment number of unmanned aerial vehicle base stations according to environmental parameters of a target area and the coverage radius of the unmanned aerial vehicle base stations; Establishing an average path loss model between the unmanned aerial vehicle base station and a user terminal in the coverage area of the unmannedaerial vehicle base station according to the environmental parameters in the coverage area of the unmanned aerial vehicle base station, and determining the deployment height of the unmanned aerial vehicle base station according to the average path loss model; And acquiring the distribution condition of all user terminals in the target area, and determining the final deployment number of the unmanned aerial vehicle base stations and the horizontal position coordinates of the unmanned aerial vehicle base stations according to the distribution condition of the user terminals and the initial deployment number and deployment height of the unmanned aerial vehicle base stations. According to the unmanned aerial vehicle base station deployment method, the unmanned aerial vehicle base stations canbe deployed reasonably under the condition that the user terminals are distributed unevenly, the communication requirements of the user terminals are better met, and network resources are saved.

The invention relates to an antenna device. The antenna device comprises an antenna ground and further comprises a first antenna and a second antenna. A grounding end of the first antenna is connected with the antenna ground. The first antenna is of a transversely arranged F-shaped structure whose opening faces the antenna ground. The first antenna works at two frequency ranges. A grounding end of the second antenna is connected with the antenna ground. The second antenna is of a loop antenna structure. The working frequency range of the second antenna is different from those of the first antenna. The grounding end of the first antenna and the grounding end of the second antenna are connected so as to enable the first antenna and the second antenna to be connected to form an integral structure. A gas with a preset width is arranged between one end, which is not connected with the second antenna, of the first antenna and one end, which is not connected with the first antenna, of the second antenna. The antenna device is capable of realizing multiband work, and the communication requirements of the antenna device are realized. The first antenna and the second antenna in the antenna device form the integral structure, so that the installation and the fixing of the antenna device are convenient. The invention further discloses a mobile terminal.

The invention discloses an underground pipe gallery wireless monitoring system, comprising a remote management platform, a data server, a wireless data collection terminal and monitoring devices which can carry out two-way data transmission in sequence. The remote management platform comprises a structure safety monitoring unit, an environment monitoring unit, a personnel monitoring unit, a smart robot inspection unit, a consultation scheduling command unit, a call unit, a BIM+GIS-based platform management module and a large-screen display module. The data server is mainly used for collecting and storing real-time data and processing results of various units, and allocating and storing all business data. According to the system, gallery structure safety monitoring, environment monitoring, personnel positioning, personnel health monitoring, smart robot inspection and wireless communication are integrated; the safety of a pipe gallery and personnel is ensured; the construction wiring is reduced; and the system maintenance is facilitated.

The invention relates to a hot-redundancy CAN (Controller Area Network)-bus high-fault-tolerance control terminal and method based on dual DSPs (Digital Signal Processors), belonging to the field of automation and control. The terminal and the method are used for solving the problems of control failure, data loss, transmission timeout and the like easily caused due to the fact that control terminals of existing distributed control systems mostly adopt cold backup and the problem that the existing fault tolerance mechanism is not perfect enough. The terminal comprises a digital-analog I / O (Input / Output) board and a dual-redundancy DSP control board, wherein the dual-redundancy DSP control board comprises a master DSP, a slave DSP, a first CAN transceiving module, a second CAN transceiving module, a third CAN transceiving module and a fourth CAN transceiving module, the digital-analog I / O board comprises a power supply module, an ADC (Analog to Digital Converter) module, a first RS232 (Recommended Standard 232) communication module, a second RS232 communication module, a CPLD (Complex Programmable Logic Device), a PWM (Pulse Width Modulation) module and a PWM filtering and self-inspection module, the master DSP and the slave DSP form redundancy, and the failure of controllers is solved by two manners comprising self inspection and mutual inspection.

The invention discloses a relay communication system utilizing regenerable energy power supply and an energy-saving mode. The relay communication system is characterized in that traditional power grid energy supplies power for a base station, regenerable energy collected by an energy collecting device supplies power for a relay, and the relay processes received signals and forward the received signals; in a downlink link, the relay periodically sends channel state information and current energy storage to the base station, and the base station determines to select a direct connection transmission mode or a relay transmission mode according to load information, information fed back by the relay and the channel conditions and conducts corresponding downlink resource distribution; in an uplink link, the relay periodically sends the state information of channels from a user to the relay and the current energy storage to the base station, the base station combines the information, the load information and state information, of channels from the relay to the base station and from a user to the base station, obtained by self-estimation to choose a direct connection transmission mode or a relay transmission mode, and conducts corresponding uplink link source distribution. By the adoption of the method, communication quality can be ensured, and non-renewable energy consumption can be saved.

The invention provides a direct sequence spread spectrum and despread demodulation method which is mainly applied to the continuous phase modulation in the field of wireless spread spectrum communication. The method comprises the steps of: at a transmitting end, firstly designing a group of spread spectrum sequence, mapping transmitting bits 0 and 1 into two groups of constant envelope baseband complex signals wit continuous changing phases and identical head and end phases, and during modulation, selecting one of the two baseband complex signals to serve as a modulation signal according to transmission information for transmission; at a signal receiving end, accumulating signals corresponding to all chips to the baseband complex signal corresponding to anyone chip in the sequence according to a spread spectrum rule of the spread spectrum sequence to complete the despread treatment of a spread spectrum signal; and comparing phase change directions at the initial position and the end position of the despread complex signal, and judging the transmission information carried by the spread spectrum sequence according to the increase and decrease of the phase change directions, thereby realizing signal demodulation. According to the invention, the continuous phase characteristic and the constant envelope characteristic of the signal are maintained in the direct sequence spread spectrum, and the estimation of carriers and initial phases under low signal to noise ratio are avoided by adopting incoherent despread and demodulation.

The present invention provides call-processing method, terminal unit and communication system, wherein call side terminal through communication network originating call request to called terminal. Said method includes call side terminal configuring call content marked calling forenotice information, transmitting calling forenotice information carried call request message to communication network; communication network transmitting said call request message to called terminal; called terminal receiving said call request message, extracting and displaying calling forenotice information in call request message. Through said invention, call side user can add addition calling forenotice information to call request, capable of effectively preventing user listening unnecessary incoming telephone or missing important incoming telephone.

The invention provides a multi-carrier cognition non-orthogonal multiple access (Non-orthogonal Multiple Access, NOMA) resource allocation method based on deep learning. The method comprises the following steps: (1) establishment of a scene model of a multi-carrier cognition NOMA system; (2) mathematical description of a user scheduling and resource allocation strategy; and (3) design of a deep neural network and a deep learning algorithm based on joint allocation. According to the multi-carrier cognition non-orthogonal multiple access resource allocation method provided by the invention, after a downlink system based on multi-carrier cognition NOMA is established, a spectrum sharing strategy consistent with the scene is innovatively proposed, mathematical expressions optimization objectives and constraint conditions are reasonably established, the multi-carrier cognition NOMA user scheduling and resource allocation strategy based on the deep learning is achieved, the multi-faceted transmission requirements of users are satisfied, and meanwhile the low power consumption resource allocation of the multi-carrier cognition NOMA downlink system is better achieved.

The invention discloses an intranet and extranet communication method, device and system, a proxy server and a readable storage medium, and the method is applied to the proxy server of an extranet, and comprises the steps: obtaining a data message sent by an extranet node; determining identification information of a target intranet node carried in the data message; and sending the data message to the corresponding target intranet node according to the identification information, so that the target intranet node executes a corresponding operation according to the information of the data message. According to the invention, the data message containing the identification information of the corresponding target intranet node and actively sent by the extranet node can be forwarded to the corresponding target intranet node; therefore, the target intranet node executes the corresponding operation according to the data message, namely, when the intranet and the extranet communicate with each other, the extranet node does not passively wait for the connection of the intranet node, but can actively realize the communication with the target intranet node, so that the requirement that the extranet node hopes to actively communicate with the intranet node is met.

The invention discloses a method and a device for paging a terminal. The method comprises the following steps of: distributing paging parameters for each user group allocated in advance, and default setting each user terminal of each user group to be in an idle state; and initiating grouping paging awakening according to the paging parameters to realize data transmission with the awakened user terminal. In the embodiment of the invention, the default user terminal is in the idle state, and paging is carried out on the user terminal of each user group in turn, therefore, the utilization efficiency of the system resource is improved, services can be provided for more user terminals, and the processing load and the energy consumption of the user terminals are reduced simultaneously.

The invention aims at providing a method and device for realizing instant messaging between mobile devices based on short distance communication, wherein the method is as follows: acquiring a device identification of a second mobile device through a short distance communication interface by a first mobile device; and sending first instant messaging information the target receiver of which is the second mobile device to a first network device or a second network device, wherein the first instant messaging information comprises the device identification of the second mobile device. Compared with the prior art, the invention has the advantages that the instant messaging between the mobile devices is realized based on the short distance communication, therefore, the communication requirement of people on 'instantaneous' unblocked communication is satisfied, and the using experience of the instant messaging of a user is enhanced.

The invention provides a method and a system for avoiding electric power data network node congestion. The method for avoiding the electric power data network node congestion comprises the following steps: the length of a node buffer queue is obtained, and the length is compared with a preset length threshold value; the congestion degree of nodes is determined according to the compared result of the length and the preset threshold value; when the congestion degree reaches the preset congestion threshold value, the positions of electric power communication services in the node buffer queue are adjusted according to preset service priority level identification; and services in lower priority levels and located at the tail of the adjusted node buffer queue are discarded, corresponding source nodes are informed to choose routes again. Due to the fact that the congestion degree of the nodes and the priority levels of the electric power communication services are taken into account reasonably, the node congestion is effectively avoided, and the communication requirements of the electric power communication services are met.

The invention provides an unmanned aerial vehicle emergency rescue high-altitude base station comprising a bearing platform, a wireless communication system and a backhaul device, wherein the bearing platform is an unmanned aerial vehicle, the wireless communication system and the backhaul device are connected with each other and are loaded on the mooring unmanned aerial vehicle, the wireless communication system comprises a RRU module communication device and an antenna, the RRU module communication device is in wireless connection with a user through the antenna, the backhaul device comprises a BBU module communication device and a backhaul system, The RRU module communication device establishes a data transmission connection with the BBU module communication device, and the BBU module communication device is in data transmission connection with a machine room PTN through the backhaul system. The unmanned aerial vehicle emergency rescue high-altitude base station has the advantages of low cost, simple operation, large bearing capacity, long air residence time and high environmental adaptability. The unmanned aerial vehicle emergency rescue high-altitude base station can quickly rise in hash environments, quickly start a communication station and can perform remote operation. The unmanned aerial vehicle emergency rescue high-altitude base station serves as an emergency communication station to meet different emergency relief scenarios, such as emergency relief, security anti-terrorism, hot spot coverage and other communication needs.

The present invention discloses a wireless point of sale terminal, comprising a wireless communication module and a point of sale terminal (POS) module. The wireless communication module and the POS terminal module are connected through a serial bus, wherein the wireless communication module is used to realize various wireless communication functions; the POS terminal module is connected to a wireless network through the wireless communication module, so as to realize POS card scanning function. The wireless point of sale terminal can realize the integration of functions under multiple wireless networks and the functions of mobile POS terminals. Compared with the prior wireless POS terminals, the wireless point of sale terminal is more powerful in functions and higher in number use efficiency.

The invention relates to a vehicle-mounted network information security protection system, which comprises a security engine module, an application program interface module, an authentication module, a security communication module, a data encryption module, an attack protection module, an intrusion detection module and a log system module,wherein the security engine module is a dispatching center of the vehicle-mounted network information security protection system, and is used for establishing a processing flow and a management rule set of the vehicle-mounted network message; the application program interface module is used for providing data encryption and decryption services for an application program; the secure communication module is used for realizing network transmission encryption based on a vehicle-mounted network transmission layer communication protocol and an SSL / TSL encryption transmission protocol; the data encryption module provides algorithm support for data encryption and decryption; the intrusion detection module is used for collecting necessary data and information through methods of real-time mapping, redundant backup and the like of vehicle-mounted network messages; and the log system module is responsible for recording system operation, network flow and operation behaviors.

The embodiment of the invention discloses a channel correction method of a remote radio unit (RRU), relevant equipment and a system. The technical solution provided by the embodiment of the invention is that correction signals are interacted through a service channel of a first RRU and a correction reference channel of a second RRU, a compensation factor for channel compensation between the RRUs is acquired according to the interacted correction signals, and service signal compensation is carried out by combining a self-correcting RRU and the compensation factor, thereby being conducive to meeting the requirement of uplink and downlink reciprocity after a plurality of the RRUs are spliced. The mechanism disclosed by the embodiment of the invention can realize splicing of a plurality of the RRUs so as to obtain more service channel RRUs, thereby being conducive to meeting higher communication requirements and giving consideration to requirements of the cost and system capacity expansion. For example, two 2T2Rs in the prior art are spliced into one 4T4R, thereby utilizing the existing investment reasonably.

The invention provides a communication mode switching method, a mobile terminal and a computer-readable storage medium, wherein the communication mode switching method, the mobile terminal and the computer-readable storage medium belong to the communication field. According to the communication mode switching method, the mobile terminal and the computer-readable storage medium, the communication modes of the mobile terminal comprise a satellite mode and a base station mode. Firstly connecting signal strength between the mobile terminal and a base station is acquired. Then on the condition that the signal strength is lower than a preset signal strength threshold, current geographical position information of the mobile terminal is detected, and furthermore the communication mode of the mobile terminal is switched according to the detected geographical position information. The mobile terminal provided by the invention can satisfy a communication requirement of a user in different scenes through switching the communication mode, and a plurality of terminals are combined for forming one terminal, thereby saving space and reducing terminal purchasing cost.

The invention provides a radio frequency system and communication equipment. The system comprises a radio frequency transceiver, a first receiving and transmitting module, a receiving module, a firstMIMO receiving module, a second MIMO receiving module, a first antenna, a second antenna, a third antenna, and a fourth antenna. The radio frequency transceiver is connected with the first antenna through the first transceiver module to form a first MIMO receiving channel of 5G signals, and is connected with a second antenna through a receiving module to form a second MIMO receiving channel of 5Gsignals; the radio frequency transceiver is connected with the third antenna through the first MIMO receiving module to form a third MIMO receiving channel of 5G signals, and is connected with the fourth antenna through the second MIMO receiving module to form a fourth MIMO receiving channel of 5G signals. The radio frequency system can support the 4 * 4 MIMO function of 5G signals of four presetfrequency bands, the use efficiency of the first MIMO receiving module and the second MIMO receiving module is improved, the cost is reduced, the space occupied by the device can be reduced, and the link loss of a receiving path can be reduced at the same time.

The invention discloses a method for communication connection of a mobile terminal. The method comprises that a card configuration request from the mobile terminal is obtained; the subscriber level and a network standard of the mobile terminal are obtained according to the identification of the mobile terminal; a card pool with the subscriber level and supporting the network standard and a communication area is selected from N pre-configured card pools, and a card group which supports communication services needed by a subscriber is selected from the selected card pool; and according to a service provider and signal intensity of each selectable network, one SIM card is selected from the selected card group and configured for the mobile terminal, so that the mobile terminal is connected to the communication network via the SIM card. Correspondingly, the invention also discloses a card configuration service end for communication connection of the mobile terminal. Thus, the SIM card can be configured for the mobile terminal rapidly, and the user experience is improved.

The invention provides an information transmission method and equipment, relates to the technical field of wireless communication, and is used for solving the problem that in the prior art, only single-hop relay (RN) network access is supported, and consequently the requirement of a future network cannot be met. In the method, first equipment receives a first message sent by a base station, the first message comprises first indication information and system information, and the first indication information is used for determining whether to broadcast the system information; and the first equipment determines that system information needs to be broadcasted according to the first indication information, and broadcasts the system information. According to the invention, the first indication information is carried in the first message of the base station; in this way, after the first device receives the first message, broadcasting system information can be determined according to the firstindication information, the target device receiving the system information can have access to the base station through the system information conveniently, multi-hop relay networking is achieved, andthe method can be suitable for building a multi-hop relay network.

The invention discloses a multi-band antenna device and a hand-held terminal with the same. The multi-band antenna device comprises a metal mainboard and an antenna body which is connected with the metal mainboard. The antenna body comprises a first antenna branch and a second antenna branch, one end of the first antenna branch is connected with the feed end of the metal mainboard, and the other end of the first antenna branch is connected with a first switch. One end of the first switch is in switching connection with the second antenna branch and the ground end of the metal mainboard, and the second antenna branch is connected with the ground end of the metal mainboard through at least one second switch. The first switch and the second switch are used, so that at least two annular antenna loops are ingeniously achieved on the same antenna body, the purpose that the single antenna body works for multiple bands in a switching mode is achieved, the space occupied by the multi-band antenna device is greatly lowered, and the weakening degree to the antenna performance can be greatly lowered when a human hand touches a metal decorative piece.

A power carrier communication method includes the following steps: an information acquisition step, a synchronization status message step, an information processing step and a communication step, wherein in the information acquisition step, a physical layer receives a pilot frequency signal to obtain channel status messages; in the synchronization status message step, the physical layer and a data transmission control layer synchronize the channel status messages; in the information processing step, a required data packet capable of communicating is obtained according to the channel status messages; and in the communication step, a time period is occupied in turn to transmit the required data packet capable of communicating. The method and the device realize the layer optimization of power carrier communication, effectively promote the mutual cognition, mutual coordination and interaction between the physical layer and a data transmission control layer, achieve the high efficiency and the reliability of data transmission, and are beneficial to transmitting high-speed data, voice, images and other multimedia business signals in a power grid.

The present invention provides a wireless sensor network clustering routing protocol based on natural energy. Prior to each clustering process, the prediction of energy supply which will arrives is performed; some of nodes with maximum residual energy and the most energy supply are selected as cluster heads to undertake more forwarding data tasks than other nodes; the proportion of the cluster heads in the total number of the nodes in a control network; and after the selection of the cluster heads is completed, other common nodes which are not cluster heads are joint for clustering, and the common nodes compare energy consumption cost of each cluster head forwarding data to a base station and then select the cluster head with minimum energy consumption for joint. The wireless sensor network clustering routing protocol based on the natural energy only need low storage cost to effectively establish route so as to improve the network survival time and satisfy communication demand between the wireless sensor nodes. The wireless sensor network clustering routing protocol based on the natural energy is low in cost, high in cost, high in energy efficiency, balanced in energy consumption, high in average energy level of network nodes, and wide in application range.

The invention discloses a multi-description video encoding method of a panoramic video. The method comprises the following steps: (1) dividing the panoramic video into a plurality of airspace segmentsaccording to the size of a viewing angle of a receiving end device; (2) selecting the airspace segment containing an interested area of a user, coding the airspace segment, performing slice interleaving to generate two corresponding descriptions, and independently transmitting the two descriptions in the network; and (3) at a receiving end, separately decoding according to different conditions that a single description is received or the two descriptions are received at the same time. According to the multi-description video encoding method disclosed by the invention, the multi-description technology is used for coding the panoramic video, so that a part of the panoramic video required by the user can still be reconstructed in the case of partial description loss without requiring the retransmission of lost data packets, and the multi-description video encoding method provides a robust video transmission scheme, and not only satisfies the real-time communication needs, but also relieves the network congestion.

The invention discloses power emergency communication network and method which belong to the technical field of power emergency communication. The network comprises a data acquisition terminal, a base station and an emergency command center, wherein the data acquisition terminal is used for acquiring power information, transmitting the acquired power information to the emergency command center by the base station and receiving a command transmitted by the emergency command center; the data acquisition terminal and the base station are subjected to wireless communication in a time division duplexing way, and the configured uplink time slot quantity is larger than the downlink time slot quantity; and the base station and the emergency command center are communicated in an optical fiber or microwave way. The invention can meet the communication requirement on the power system in various emergency scenes.

The invention provides a mixed ASTN construction method, which effectively combines OCS and OBS two exchange modesby constructing network to form a ring topological structure OBS network and OCS network combination, making majority service to reach target node via one hop. The method satisfies communication need of network of most conditions. When network service changes in a small range, service Optical path can not bear will continue to transmit along ring topology in OBS exchange style. The inventive networking technology is more simple and effective, network performance worsening degree is small arising from network dynamic change, network operation is more stable and possesses relatively high communications capability; furthermore, network algorithm realization is less difficult and practical.

The invention relates to the technical field of wireless communication and discloses a routing implementation method for a wireless multi-hop chain network. A chain-shaped or tree-shaped topological structure is constructed by a binary tree form. The topological structure is established by accessing nodes into a system one by one. A special addressing mode with logicality is adopted, so that each communication node in the whole network has a unique logic identifier LID (comprising two domains BID and NID) and each LID is reflected in an IP (Internet Protocol) address. The LID of the system has a certain logicality, i.e. the BIDs of nodes on the same furcation are the same, and the NIDs of the forward nodes are greater than those of the reverse nodes, and thus, by utilizing the rule, a routing forwarding function is convenient to implement. The routing implementation method implements routing on the basis of the wireless multi-hop chain network so as to fulfill the aims of low routing control cost, simplification for a routing list and high speed of grouping forwarded data.