153results about How to "Improve communication success rate" patented technology

The invention relates to a dual mode heterogeneous communication system based on a low voltage power line and micropower wireless. The system comprises a master station, a concentrator, a collector, a smart electric meter and the like, wherein the master station is connected with the concentrator through a public communication network; the concentrator is connected with a district assessment main electric meter, a plurality of triphase smart electric meters, a single phase smart electric meter and the collector; the collector is provided with a plurality of RS 485 smart electric meters; the concentrator, the collector, the single phase smart electric meter and the triphase smart electric meters are connected through a wireless communication network or a carrier communication network, so that a dual mode concentrator route module and a dual mode electric meter module or a collector module are in cooperative work, a dual channel communication network with complete coverage in a district is established, and a whole network dual channel multitask dual mode communication is realized. In the dual mode heterogeneous communication system provided by the invention, weaknesses of various communication modes are complemented mutually, the problem of communication failure caused by line signal degradation or a far distance is solved, and the communication success rate and the communication efficiency are greatly improved.

The invention discloses an electricity information acquisition system based on dual-mode communication and a method thereof; the system includes a far-end master station, a concentrator and an intelligent electric energy meter; the far-end master station is used for acquisition and management of system electric power user electricity information through various wired or wireless communication channels, and is used for data exchange with the concentrator through a remote communication module; the concentrator is provided with a dual-mode communication module, and is used for acquiring intelligent electric energy meter data information and operation states through the dual-mode communication module, achieving local acquisition and monitoring of the electricity information, and uploading the local electric meter data information to the far-end master station through the remote communication module; the intelligent electric energy meter is provided with a dual-mode communication module and is responsible for electricity information measurement, data processing, real-time monitoring, automatic control and information exchange. The communication problem generated when a fault occurs due to single use of a micro power wireless or power line is avoided, the consumed power of a dual-mode communication chip is reduced, and the reliability of the communication is ensured.

The present invention discloses a wrist-worn wireless communication device coupled with an RF antenna configured to operate folded or coiled in the device, or extended along the arm from wrist to elbow. A typical embodiment of the invention relates to an emergency radio beacon, particularly for satellite based systems such as a Personal Locator Beacon (PLB) for the Cospas-Sarsat system.

The invention discloses a method for configuring multilevel transmitting power in the wireless sensor network. When a communication service is initially initiated by a sending node to a receiving node in the wireless sensor network, the theoretical communication distance between the two communication nodes is measured and calculated by the sending node. Theoretical transmitting power needed by the nodes is calculated, the stages of the transmitting power are initially selected, and each transmitting power stage is provided with a plurality of transmitting power values. The node no-load received signal strength instruction namely RSSI detection is sent out, and the needed transmitting power stages are dynamically adjusted. The minimum effective transmitting power value is determined from the selected transmitting power stages based on the exploratory transmitting power control method. The transmitting power values determined based on the power setting method are stored, and the transmitting power is set to initiate the communication service. The two nodes initiate the communication service again to directly acquire the stored transmitting power, and if the communication is failed, the stored transmitting power values are eliminated, and the method for configuring the multilevel transmitting power is launched again to set the transmitting power value suitable for a communication link.

The embodiment of the invention provides a dual-mode heterogeneous network communication system and method. The dual-mode heterogeneous network communication system comprises a network center node, a station region information source node and a plurality of single-phase dual-mode nodes, wherein the station region information source node receives a station region transformer number, and broadcasts information source information including the station region transformer number and a phase sequence number to which a low-voltage power line belongs at fixed time on the low-voltage power line of each phase of a station region transformer; each single-phase dual-mode node receives the information source information, analyzes the station region transformer number and the phase sequence number which correspond to the single-phase dual-mode node, and sends the station region transformer number and the phase sequence number to the center node; the network center node receives information which includes power utilization information, the station region transformer number and the phase sequence number and is sent by the single-phase dual-mode node, and sends the power utilization information, the station region transformer number and the phase sequence number to a main station. According to the dual-mode heterogeneous network communication system, positioning of a station region to which the acquired power utilization information belongs and complete coverage of acquired data communication within a station region range are realized, and the data transmission reliability and the communication success rate in a power utilization information acquiring process are improved.

The invention relates to a sensor communication system and a method for conducting monitoring through the sensor communication system. According to the system and the method, behaviors of livestock in a real cultivation scene can be monitored and analyzed by integrating the internet of things with the computer visual technology, a video surveillance and sensor network software and hardware system based on the wireless WiFi technology is set up for the first time, and the problem that a traditional cable is high in installation cost, long in consumed time and difficult to expand is solved. The behaviors of dairy cattle in the real cultivation scene can be monitored and analyzed by integrating the internet of things with the computer visual technology, monitoring and analysis for multiple broad categories of daily behaviors can be achieved, meanwhile, the occurrence of abnormal events can be monitored, and an alarm can be automatically given for the abnormal behaviors.

The invention relates to a data transmission method and device based on orthogonal frequency division multiplexing and a meter reading system. The method comprises the steps of dismantling the data into multiple sub-data packets by a transmitter, encoding the sub-data packets, adding different sequence numbers in each sub-data packet; copying multiple copies of the sub-data packets; and modulating all copied sub-data packets into subcarrier signals which are separated at preset frequency intervals, and sending the subcarrier signals to a receiver. By adopting the data transmission method and device based on orthogonal frequency division multiplexing and the meter reading system provided by the invention, an effective bandwidth is effectively used to decompose the communication data into multiple sub-data packets for transmission, so the data transmission rate is accelerated, and the data interference and the bandwidth waste are reduced; and furthermore, redundant data transmission is carried out for multiple times to improve the communication success rate of the data transmission and ensure the accuracy and security of the data.

The invention discloses a power line carrier communication device and a control method thereof. Through an electronic switching circuit, a high-frequency signal receiving-coupling circuit is connected in parallel to a power line when a power line carrier communication processing module is in a wake-up window, and a connection between the high-frequency signal receiving-coupling circuit and the power line is cut off when the power line carrier communication processing module is in a hibernation state, so that the load of a bus is lowered effectively, and the attenuation value of a carrier high-frequency signal is small. Through repeated circulation of wakeup-hibernation-wakeup, the power consumption of the power line carrier communication processing module can be lowered greatly. Specific to the aim of lowering power consumption, a slave ID short address is set behind a synchronization sequence code, so that the problem that the power consumption increases since other slaves which already receive the synchronization sequence code open time receiving windows completely during communication of a host with a certain slave is solved effectively.

The invention relates to a multi-network coexistence multi-frequency-point wireless communication networking method, and belongs to the field of network planning. The method comprises the following steps: after a central control node and a station are powered on, adopting a networking method when the central control node is in a non-networking state; after networking is finished, carrying out thenetwork maintenance through agent change and a real-time routing repair process; after power-on again, enabling the central control node or the station to be in a networking success state, and employing a central control node or station network recovery method. According to the invention, the networking of coexistence of multiple networks and multiple frequency points is realized, the networking time is shortened, the networking efficiency, the network stability and the utilization rate of time slot time are improved, and the network overhead is reduced; and meanwhile, the network can be quickly recovered to a working state.

The present invention discloses a method of beam shaping for a forward access channel, which increases information on angle of arrival in data frames of a random access channel RACH at an Iub interface in advance and adds shaping parameters in data frames of a forward access channel at the Iub interface and includes procedures below: A. A radio network controllers obtains information on terminal angle of arrival through data frames of an uplink RACH; B. The RNC confirms shaping parameters of data frames of a downlink FACH to a base station Node B according to the information on angle of arrival; C. The Node B shapes a secondary common control physical channel S-CCPCH, which carries the FACH, according to shaping parameters received by the RNC from data frames of the FACH. The present invention realizes beam shaping for the forward access channel, effectively restricts interference of the S-CCPCH of the FACH on other common channels.

The embodiment of the invention discloses a network slice application control method and device, communication equipment and a storage medium. The network slice application control method applied to the base station provided by the embodiment of the invention comprises the step of distributing slice configuration information of a wireless access network to user equipment UE.

The concentrator includes microprocessor, electric power carrier communication unit (EPCCU) connected to microprocessor, external memory unit, infrared communication interface, power line coupling interface (PLCI) connected to EPCCU, and power amplifier circuit connected between EPCCU and PLCI. Characters are that being composed of dedicated frequency extended carrier wave chip, EPCCU is in use for communicating with each meter-reading terminal (MRT) in CDMA frequency extended mode; being composed of amplifying circuit in sine wave, power amplifier circuit is in use for carrying out sine wave amplification for signal output from EPCCU; the concentrator also includes an error correction coding unit; a polling unit in use for executing polling step, and establishing routing list communicated with each MRT. The invention raises stability of communication under condition without raising transmission power so as to be in favor of reducing harmonic wave pollution of power line.

The invention discloses a real-time logistics tracking device based on satellite and ground interaction. The real-time logistics tracking device is suitable to be arranged on a container door of a container, and comprises a shell, a microprocessor, a satellite communication module, a satellite positioning module, an RFID (Radio Frequency Identification Devices) module, a tamper protection device and a low-power-consumption Bluetooth module, wherein the microprocessor is arranged in the shell; the satellite communication module is communicated with the microprocessor, and is used for performing bidirectional data transmission with a communication satellite; the satellite positioning module is communicated with the microprocessor, and is used for receiving positioning information; the RFID module is communicated with the microprocessor, and is used for reading information of an RFID sensing module in an RFID door lock of the container and / or the container; the tamper protection device is communicated with the microprocessor, and is capable of transmitting alarm information; the low-power-consumption Bluetooth module is communicated with the microprocessor, and is suitable for communicating with intelligent terminal equipment for electronically sealing and unsealing the container door; the positioning information, the RFID information and the alarm information can be transmitted to the communication satellite via the satellite communication module, and are further transmitted to a ground server. The invention further provides a real-time logistics tracking method and a system.

The invention discloses a TPLC based power line power frequency communication system, which is characterized in that the system is installed under each transformer area, a master module is installed at a concentrator, and a slave module is installed at each terminal meter; the master module is provided with an inbound signal detection circuit, an outbound signal modulation circuit and a processor; each slave module is provided with an inbound signal modulation circuit, an outbound signal demodulation circuit and a processor; and the concentrator sends outbound signals to the slave modules through the master module and detects inbound signals sent by the slave modules, and each terminal meter sends the inbound signals to the master module through the slave module and detects the outbound signals sent by the master module. According to the invention, the modulated pulse signal frequency is far lower than the conventional power carrier signal frequency, the system is not susceptible to influences of impedance of a power distribution network, low-frequency signals are not attenuated, the transmission distance is greatly increased, power grid noise energy in a corresponding frequency band is small, the communication success rate is much higher than that of a traditional carrier communication method, point-to-point communication is used directly, networking is not required, and network topology is simple.

In the field of distributed wireless sensor network long-distance communication, the communication distance and the energy of a single node are limited, a multi-hop mode is used, bit error rate is high, and time delay is large. Accordingly, the invention discloses a cooperative communication mode of wireless sensor network beam forming transmission and a node selecting method. First, the smallest node number needed for forming a virtual antenna array is determined; then an ideal antenna direction picture of the array is determined, according to the ideal direction picture, the conditions such as array shapes and node space distance are determined, and nodes which accord with the conditions are selected to form the antenna array; and finally the nodes are managed, array nodes are coordinated, time sequence is unified, and data are sent in a combination mode in a beam forming manner. According to the method, the problem that time delay is too high, and energy loss is too large due to traditional wireless sensor network long-distance multi-hop communication can be effectively avoided, communication success probability is improved, and network lifetime is prolonged.

The invention discloses a communication method and a communication system based on an express delivery service. The communication system comprises an application terminal for providing user operation, request access, call initiation and calling status monitoring, and accesses a user database through an application server; the user database is used for recording and managing basic information of users, service data of users and system operating data; and a communication gateway is butted with telecom operators, and is used for realizing interconnection of a telephone calling channel, a short message transceiving channel and the telecom operators. According to the communication method and the communication system, a specific contact number of a good receiving client does not need to be displayed on a paper express delivery bill, a courier can initiate a calling request to a client by clicking order information requiring good delivery through a terminal, the whole communication is established through unified service telephone callback, and the courier does not know personal number of the client during the whole communication process, thereby ensuring personal communications information security of the client, improves communication success rate of the courier and the client, and facilitating the first time delivery of express.

The invention provides a random access method, equipment and a terminal, relates to the technical field of communication, and aims to solve the problem that the communication success rate between theterminal and a network side is low due to the fact that random access resources cannot be configured on a BWP of the terminal in the prior art. The method comprises: acquiring random access configuration information, wherein the random access configuration information comprises random access resources corresponding to BWPs; Obtaining a target random access resource corresponding to a BWP currentlyactivated by the terminal according to the random access configuration information; And using the target random access resource to initiate a random access process. By utilizing the embodiment of theinvention, the communication success rate between the terminal and the network side can be improved.

The invention discloses an automatic real-time frame synchronization method of a frequency-modulated hydro-acoustic communication system, and relates to hydro-acoustic communication. The automatic real-time frame synchronization method of the frequency-modulated hydro-acoustic communication system comprises the following steps: at a transmitting terminal, sequentially transmitting a coarse synchronizing signal and a fine synchronizing signal both fixed in time length; and at a receiving end, performing sliding FFT (Fast Fourier Transform) on hydro-acoustic signals which are acquired from a transducer terminal in real time by a step size L at first, automatically judging coarse synchronization according to the first-increase and later-reduction trend of a F (f1) value in each spectrogram, calculating the attenuation coefficient a(t) of a channel to signals by using the received coarse synchronizing signal, automatically adjusting a fine synchronization threshold b and estimating the approximate time start c of the fine synchronizing signal, and finally, performing mutual correlation operation on the hydro-acoustic signals acquired from the start c according to the adjusted fine synchronization threshold b to obtain fine synchronization. A DMA (Direct Memory Access) module of a DSP (Digital Signal Processor) is used for setting a ping-pong buffer in which the hydro-acoustic signals acquired by an AD (Acquisition Device) can be stored without DSP intervention; as a result, automatic real-time tracking on synchronizing signals in up-and-down hydro-acoustic channels is realized; the quantity of operation is low and few memory resources are occupied.

The invention provides a self-adaptive adjustment system and a method for the carrier communication of a low-voltage power line for automatically adjusting key parameters of the spread spectrum carrier communication of a power line so as to improve the carrier communication reliability of the power line and reduce the bit error rate. The self-adaptive adjustment system comprises an input signal conditioning module, a sampling and filtering module, a link quality detection module, a signal intensity detection module, a comprehensive error detection module, a self-adaptive algorithm adjustment module and a symbol decision module, wherein the self-adaptive algorithm adjustment module comprises a fuzzy normalization part, a fuzzy rule part, an inference engine part and a decision threshold value part. In the invention, a spread spectrum communication decision threshold value is automatically tracked and adjusted through checking the parameters of the link quality, the signal intensity, the comprehensive error, and the like of the communication system so as to ensure that the performance of the communication system reaches the optimum, i.e. the communication success rate reaches a maximum value under the current working condition.

The invention relates to a ship emergency positioning and communication system based on Beidou and a monitoring method thereof. The ship emergency positioning and communication system comprises the components of a positioning system which is in bidirectional communication connection with a control system and is used for acquiring positioning information of a ship through a Beidou satellite navigation system; the control system which is in bidirectional communication connection with a communication system and is used for transmitting communication data and a control instruction; a position displaying system which is controlled by the instruction of the control system and is used for displaying LED light and transmitting a positioning signal; the communication system which performs bidirectional communication with a rescue monitoring platform system and is used for transmitting asking-for-help information and position information; and the rescue monitoring platform system which is used for receiving the asking-for-help information and the position information that are transmitted from the communication system and simultaneously transmitting the control instruction. The ship emergency positioning and communication system has advantages of safe information, high communication stability, reliable performance, high systematization degree of the emergency and rescue platform, etc. An emergency processing and rescuing efficiency is improved. Furthermore on-water safe navigation capability, danger alarm capability and emergency handling capability of a ship are effectively improved.

The invention provides an adjusting method for the Baud rate and a charger adapter, and aims at solving the problem that an existing fast charger adapter cannot accurately adapt to changes of the mobile phone communication speed in real time. The adjusting method for the Baud rate comprises the steps that when each frame of communication message sent by a mobile terminal is received, a preset bitof a preset byte in the communication message is detected, and the Baud rate of current communication of the mobile terminal is determined; and the Baud rate of communication of the charger adapter isadjusted according to the Baud rate of current communication of the mobile terminal to achieve the purpose of being capable of adapting to the Baud rate of the mobile terminal, and then the communication success rate of the mobile terminal and the charger adapter can be increased.

The invention provides a communication method for a washing machine. The washing machine comprises a main controller and a slave controller, and the main controller communicates with the slave controller. The communication method comprises the steps that, the slave controller receives a control command transmitted from the main controller; the slave controller checks the control command to determine whether the control command is correct; if the control command is correct, the slave controller carries out the control command; if the control command is in error, the slave controller further repairs the control command; and if the control command cannot be repaired, the slave controller sends feedback of fault information to the main controller, so that the main controller performs a fault alarm according to the fault information. The communication method is advantageous in that, under the condition that hardware cost is not increased, communication success rate of the washing machine can be improved, and communication false alarms are reduced.

The invention provides an Internet-of-Things data acquisition terminal energy-saving method based on a satellite orbit prediction algorithm. The method comprises the following steps: 1,starting an Internet-of-Things data acquisition terminal based on a satellite orbit prediction algorithm to enter a normal working state and enter a data acquisition mode, 2, after a data acquisition module of the Internet-of-Things data acquisition terminal based on the satellite orbit prediction algorithm acquires and stores the environment monitoring information through a sensor, closing a data acquisition mode, and entering an orbit prediction calculation mode; 3, judging whether the satellite enters the scene or not at the current time according to the orbit prediction result in the step 2, and if the Internet-of-Things data acquisition terminal enters the entry, the Internet-of-Things data acquisition terminal enters a data transceiving mode, communicates with the satellite, finishes sending or exits, all modules are closed, and the Internet-of-Things data acquisition terminal enters a standby low-power-consumption mode, so that the communication power consumption can be remarkably reduced, andthe communication success rate of the Internet-of-Things data acquisition terminal and the satellite can be improved.

The embodiment of the invention discloses a communication method. The method comprises the following steps: receiving a measurement report reported by a terminal; acquiring a current communication state of the terminal when the measurement report carries SRVCC indication information; selecting a target cell supporting the emergency communication capacity based on the measurement report when the current communication state of the terminal is an emergency call; initiating a switching request to the target cell from a source cell, wherein the source cell is the cell serving for the terminal at present. The embodiment of the invention further provides the base station and the storage medium at the same time.

The invention discloses a power line carrier centralized meter reading system node belonging automatic confirmation method. Through building a confirmation channel with frequency lower than 10khz, a main node at a low voltage side of a low voltage transformer can receive confirmation signals sent by slave nodes belonging to the main node through the confirmation channel and can not receive confirmation signals sent by nodes which do not belong to the low voltage side of the low voltage transformer of the main node through the confirmation channel, a node belonging abnormal condition can be avoided, automatic node belonging confirmation in the centralized meter reading system can be realized, and the cost for manual field inspection and test is reduced.

The invention provides a communication processing method and a mobile terminal. The method comprises the steps of if receiving a data packet header sent by a charger, obtaining a receiving time of thedata packet header; based on the receiving time, calculating a communication Baud rate at which the charger sends the data packet header; and receiving or sending data according to the communicationBaud rate. In this way, by receiving or sending the data by using the communication Baud rate at which the charger sends the data packet header, the communication success rate between the mobile terminal and the charger can be improved, and the stability and the security of a charging system are guaranteed.

The invention discloses a vehicle frequency hopping communication system. The vehicle frequency hopping communication system comprises a signal emitting device and a vehicle-mounted receiving device, wherein the signal emitting device comprises a high-frequency emitter and a microcontroller, and the vehicle-mounted receiving device comprises a signal receiving module and a signal processing module. The vehicle frequency hopping communication system is characterized in that the emitting frequency of a first radio frequency signal and the emitting frequency of a second radio frequency signal differ, and the difference is within the receiving frequency band width range of the vehicle-mounted receiving module. Because communications are carried out by a PEPS and a TPMS through the first radio frequency signal and the second radio frequency signal which have the different frequency points respectively, the same vehicle-mounted receiving module can be shared, and communication failure problems caused by same-frequency interference can also be avoided to a great extent. The vehicle frequency hopping communication system improves frequency spectrum utilization ratio, reduces the number of vehicle-mounted receiving devices, and improves communication success rate.

The present invention discloses a power line carrier communication-based electricity information collection terminal networking method. The method comprises the steps of pre-sending networking parameters; calculating, by a networking terminal node, a plurality of carrier signal attenuation values matching paths; and creating, by the networking terminal node, carrier communication path information and communicating with a to-be-networked terminal node, wherein the paths refer to all communicable paths between one to-be-networked terminal node and one networking terminal node, and the path load impedance is obtained through dividing a voltage of one communication path between one to-be-networked terminal node and one networking terminal node by a current. According to the method, the networking terminal node calculates the transmission signal attenuation value of the communication channel to analyze the channel quality, so as to select a high-quality network communication path, so that the communication success rate is high.

The invention discloses a method for sending target data. The method for sending the target data includes: encapsulating target data into long message formatted data with a preset data length; decomposing the long message formatted data into a plurality of data packages with equal data lengths, adding package head information to the front end of each data package, and adding package tail information to the rear end of each data package, wherein the package head information is provided with package numbers which are arranged in order, and the package trail information is checking information; modulating the plurality of data packages to at least two different sound wave carrier wave frequencies to form at least two pieces of audio data; and performing audio playing on the at least two pieces of audio data through an audio player. The invention also discloses a method for receiving the target data, an audio sending terminal, and an audio receiving terminal. According to the invention, the method for sending and receiving the target data can effectively improve the communication success rate of the target data.

The invention discloses a channel management method applied to spread spectrum communication, which relates to the wireless communication technology field. The invention comprises one or more terminal devices, a plurality of gateway devices for forwarding data and a network server used to process data and instructions. According to the invention, a communication frequency band is subjected to channel division. The terminal device(s) select(s) a channel from all channels to transmit data according to the channel quality grade evaluation list released by the network server. The method of the invention is able to reduce the probability of communication conflicts among the devices in a network, increases the success rate of communication, increases the stability of long-term communications of an open frequency band product and enlarges the network capacity.