36results about How to "Avoid Communication Anomalies" patented technology

The invention discloses an allocation method for veneer groove location numbers and comprises the following steps that a central veneer receives address request messages sent by a business veneer; the central veneer allocates groove location numbers for the business veneer according to the corresponding relationships of preset interface numbers, groove location numbers and the interface numbers of the received address request messages; the central veneer returns and carries responding messages of the groove location numbers to the business veneer. The invention also correspondingly provides a central veneer, a business veneer and a communication system. The adoption of the technical proposal provided by the embodiment of the invention ensures the accuracy of the allocation of the groove location numbers and the stability of the communication system.

The embodiment of the invention provides a control method and an electronic device. After the electronic device obtains first parameters corresponding to a first antenna and second parameters corresponding to a second antenna, the electronic device determines performance relations between the first antenna and the second antenna according to the first parameters and the second parameters. When the performance of the first antenna is superior to that of the second antenna, the first antenna is taken as a master antenna; the second antenna is taken as an assist antenna; the assist antenna is used for assisting the master antenna to send and receive signals; if the performance of the second antenna is superior to that of the first antenna, the first antenna is taken as the assist antenna; the second antenna is taken as the master antenna; in this way, when the radiation field of one antenna is shielded, the electronic device can switch the master and assist relations between the two antennas; therefore, the electronic device can send and receive data normally; and the communication stability of the electronic device can be ensured.

The application provides a method and device for selecting a link, and is applied to a vehicle-mounted access point AP in a wireless grid Mesh network. The vehicle-mounted AP is used for starting a first frequency section and a second frequency section, the link is established by the vehicle-mounted AP, a plurality of detected trackside APs of the first frequency section and a plurality of detected trackside APs of the second frequency section, and the first frequency section is a preferential frequency section. The method comprises the following steps: obtaining first signal strength of which the signal strength is highest from the signal strength of the detected trackside APs of the first frequency section; obtaining second signal strength of which the signal strength is highest from the signal strength of the detected trackside APs of the second frequency section; selecting one of the links corresponding to the first signal strength and the second signal strength to transmit data according to the first signal strength and the second signal strength. According to the method and the device disclosed by the application, the anti-interference property of a wireless link can be improved, and besides a communication failure caused by the ring formation of the links can be avoided.

The invention discloses a firmware upgrading method for equipment. The firmware upgrading method for the equipment includes the following steps of when a firmware upgrading instruction is received, determining other equipment associated with the current equipment, obtaining upgrading information of the current equipment, and according to the upgrading information of the current equipment, controlling firmware of the current equipment and firmware of the other equipment for upgrading. The invention also discloses the equipment, a firmware upgrading device for the equipment and a storage medium.The operational reliability of a system composed of a large quantity of the equipment is improved.

The invention discloses an IAB node configuration method and a communication device. The method comprises the steps that a target IAB host receives first information from a source IAB host and sends first configuration information to the source IAB host; the IAB node comprises an MT and a DU, the first configuration information is determined according to the first information and is used for indicating the transmission direction of a time domain resource configured for the MT by the target IAB host, and the first information is used for indicating one or more of the following four kinds of information: when the MT is supported or not supported to receive data, the DU sends the data; the DU receives the data while supporting or not supporting the MT to receive the data; the DU sends the data while supporting or not supporting the MT to send the data; the DU receives the data while supporting or not supporting the MT to send the data. The first information can be duplex capability information, the first configuration information takes the first information as the premise, and in the cross-host switching process of the IAB node, the transceiving conflict between the DU and the MT can be avoided.

The invention provides a communication network delay jitter smoothing method, device and system. The method comprises the steps that a receiving module clears a forward delay threshold and a backward delay threshold at the beginning of initialization time; each business flow fragment is performed within the initialization time; and when the maximum value of the forward delay real-time value corresponding to the current business flow fragment and the backward delay threshold corresponding to the current business flow fragment is greater than the current value of the forward delay threshold, the current value of the forward delay threshold is replaced by the maximum value. Therefore, the delay threshold after the end of initialization is determined at the end of initialization and applied to delay compensation so that bidirectional asymmetric delay jittering can be substantially reduced, and the problem of abnormal user communication caused by excessive jittering can be prevented.

The invention relates to a network card name curing method and device, computer equipment and a storage medium which are applied to the network connection technology. The method comprises the following steps: acquiring an unique identifier of a to-be-cured network card in a system as an equipment identifier; acquiring a first name of the to-be-cured network card through a preset mapping table, wherein the first name is a cured interface name corresponding to the equipment identifier in the mapping table; determining that the first name is not occupied by a registered network card; and settinga network interface name of the to-be-cured network card as the first name. The problem that the effective efficiency of the network card name curing of the existing way is low is solved, and the network communication stability of the system can be guaranteed.

Provided are: a communication system for connecting a vehicle and a power-supply device by a charging cable which houses a power-supply line and a control line therein, and capable of suppressing the occurrence of communication abnormalities while keeping noise imparted to the power-supply line at or below a stipulated upper limit, in communication such as inband communication for transmitting and receiving a communication signal with the control line as the medium therefor; a communication device; a power-supply device; and a vehicle. A power-supply device (2) reads the settings pertaining to the output of each frequency stored in advance in a memory unit (221b), and performs mapping processing for adjusting an output waveform pertaining to communication signal transmission to the amplitude set in advance for each frequency, on the basis of the read settings. In addition, by subjecting the mapped communication signal to an inverse Fourier transform, the power-supply device (2) converts the communication signal expressed as digital data in a frequency region to digital data in a time region, and also D / A converts the same into analog data.

The invention provides a method for blocking access to an abnormal network cell, a mobile terminal and a storage medium. The method comprises the steps of: identifying the network cell in the trackingarea when accessing the network; Judging whether the network cell is an abnormal network cell according to a preset recording table; A list of abnormal network cell is recorded in that record table;If so, access to the abnormal network cell is blocked. A main object of that invention is to avoid access to abnormal network cell and to overcome the problem of abnormal network communication.

A synchronous communication method comprises the steps that a first terminal obtains first configuration information, and the first configuration information comprises a first parameter; the first terminal determines a corresponding transmission time slot in a device-to-device (D2D) communication system at the current moment according to a clock of a global navigation satellite system (GNSS); thefirst terminal judges whether the current moment is a synchronization information sending moment or not according to the transmission time slot and the first parameter; if yes, the first terminal sends direct connection link synchronization information at the synchronization information sending moment, the direct connection link synchronization information carries indication information, the direct connection link synchronization information is used for enabling the second terminal to be synchronized with the first terminal, and the indication information is used for indicating the second terminal that the first terminal is a synchronization source using a GNSS clock.

The invention discloses a communication method and device, which belongs to the technical field of communication. The communication method comprises the steps of: receiving first input of a user, wherein the first input comprises input requesting audio and video conversation; and in response to the first input, acquiring state information of a plurality of first servers corresponding to a plurality of first applications, determining a target server in the plurality of first servers based on the state information, controlling a target application corresponding to the target server in the plurality of first applications, and sending an audio and video call request to the target server, wherein the plurality of first applications are local applications supporting audio and video calls. According to the communication method and the device, the conditions of call interruption or picture damage and blockage in the audio and video call process can be avoided.

Disclosed is a spectrum spread communication system which is hardly influenced by a noise, and can identify a frame structure at the reception side if a frame synchronization signal is not transmitted. A spread code generator (42) switches spread codes (Scai, Scbi) for each frame, and outputs to a spread / modulation unit (41). The spread / modulation unit (41) spreads and modulates transmission data and transmits to a direct current power line (2). A reference code generator (44) generates reference codes (Scai, Scbi) at the same code phase. Spread / demodulation units (43a, 43b) spread and demodulate the received signal using the reference codes (Scai, Scbi), and output to a selection unit (47). A frame synchronization detection unit (46) identifies a frame structure on the basis of the switching of synchronization states of the code phase in a code phase synchronization detection unit (45). The selection unit (47) outputs reception data by selecting the spread / demodulated data output from the phase-synchronized spread / demodulation unit among the spread / demodulation units (43a, 43b).

A synchronous communication method, the method includes: a first terminal acquires first configuration information, and the first configuration information includes a first parameter; the first terminal determines the current time in a device-to-device D2D communication system according to a global navigation satellite system (GNSS) clock Corresponding transmission time slot; the first terminal judges whether the current moment is the synchronization information transmission time according to the transmission time slot and the first parameter; if so, the first terminal sends the direct link synchronization information at the synchronization information transmission time, and the direct connection link The synchronization information carries indication information, the direct link synchronization information is used to synchronize the second terminal with the first terminal, and the indication information is used to indicate to the second terminal that the first terminal is a synchronization source using a GNSS clock.

The invention relates to a method, a device, a computer device and a storage medium for fixing a network card name, which are applied to network connection technology. The method includes: obtaining the unique identifier of the network card to be cured in the system as a device identifier; obtaining the first name of the network card to be cured through a preset mapping table; The device identifies the corresponding solidified interface name; it is determined that the first name is not occupied by a registered network card; and the network interface name of the network card to be solidified is set as the first name. The embodiment of the present invention solves the problem of low effective efficiency of network card name curing in the existing method, and is beneficial to ensure the stability of network communication of the system.

The application discloses a communication method and device, which belong to the technical field of communication. The method includes: receiving a first input from a user, wherein the first input includes: an input requesting an audio and video call; in response to the first input, acquiring a plurality of first servers corresponding to a plurality of first applications state information, and determine a target server among the multiple first servers based on the state information, and control a target application corresponding to the target server among the multiple first applications, and send a tone to the target server A video call request, wherein the plurality of first applications are local applications supporting audio and video calls. This application can avoid the situation of call interruption or screen damage or freeze during audio and video calls.

The invention provides a system for testing a wired measurement and control interface of a deep space exploration surrounding device to a lander. The system comprises a main control module, an OC gate instruction receiving module, a voltage remote measurement simulation module, a thermistor simulation module, an RS422 communication simulation module, a heater simulation module and a power supply module. The OC gate instruction receiving module, the voltage remote measurement simulation module, the thermistor simulation module, the RS422 communication simulation module and the heater simulation module are all connected to the main control module; and the OC gate instruction receiving module, the voltage remote measurement simulation module, the thermistor simulation module, the RS422 communication simulation module and the heater simulation module are all connected to the power supply module. According to the invention, the function of the surround device to the lander wired measurement and control interface can be tested before the surround device is in butt joint with the lander electrical interface, the correctness of the interface and the coordination of information interaction are fully verified, and abnormal communication or potential safety hazards between the two devices caused by mismatching of the interfaces after the two devices are in butt joint are avoided.

The invention discloses a group call processing control method for railway-specific mobile terminals, comprising the following steps: when a user initiates a point-to-point call / group call / broadcast or answers a point-to-point call, the mobile terminal receives a channel assignment message from the Um port and joins the process , and when the user joins a group call, in the process of joining the group call service channel in the radio resource management layer, set the group call joining permission state to FALSE; when the user hangs up a group call / broadcast, ends a point-to-point call Or exit a group call / broadcast, exit from the traffic channel TCH, enter the idle state and stay in the serving cell, start to monitor BCCH, CCCH and NCH channels, when the handheld terminal monitors a complete NCH notification period on the NCH, Set the group call join allow state to TRUE. The invention can solve the problem that the handset station in conversation joins the group call channel that has been released, and can be compatible with the problem that the network notifies the group call on the FACCH with wrong parameters in some cases.

The invention discloses a group call processing control method for a railway dedicated mobile terminal, which comprises the following steps: when a user initiates a point-to-point call / group call / broadcast or answers the point-to-point call, when the mobile terminal receives a channel allocation message from a Um port and joins in the channel allocation message and when the user joins in the groupcall, in the process that the wireless resource management layer joins the group call service channel, setting the group call join permission state to be FALSE; when a user hangs up a group call / broadcast, ending a point-to-point call or quitting a group call / broadcast, quitting from a traffic channel (TCH), entering an idle state and residing in a serving cell, starting up to monitor the BCCH, the CCCH and the NCH, and when a handheld terminal monitors a complete NCH notification period on the NCH, adding the group call into allowable state. According to the method, the problem that the handheld station joins in the released group call channel in the call can be solved, and the problem that the group call notification parameters of the network on the FACCH are wrong under some conditionscan be solved.

The invention discloses a split brake and a motor. A split brake includes a brake iron core, an armature, a wheel hub and a friction plate arranged in a brake housing. The brake iron core is closely matched with the brake housing, and the armature passes through the The elastic part is connected with the brake core, and the hub for tight fit with the motor shaft is set on the side of the armature away from the brake core, the hub is tightly fitted with the brake core through the seal, and the friction plate is set on the side of the hub close to the armature , the friction plate is connected with the wheel hub; a motor includes a brake, and the brake is the split brake described above. A split brake can prevent dust from entering the encoder shell and adhering to the code disc of the encoder; a motor, through which the brake can improve the reliability of the encoder during operation, so that the encoder can accurately measure the operation of the motor Time parameters, thereby improving the reliability of the motor operation.

The invention provides a self-inspection device for a radio frequency test system of a deep space detector, including a simulation monitoring module, which controls the operation of each functional module and monitors the working state; a CPCI bus, which is used for the interconnection and data interaction of each module; and a down-conversion module , to receive the input uplink signal and perform frequency conversion processing; the intermediate frequency receiving module receives and demodulates the intermediate frequency modulation signal; the remote control signal processing module processes and sends the remote control subcarrier signal; the ranging signal processing module processes and sends the ranging tone signal; the baseband The data processing module processes and sends the analog telemetry data output by the simulation monitoring module; the intermediate frequency modulation module processes and sends the analog telemetry data and ranging tone signals; the up-conversion module up-converts the intermediate frequency modulation signal and outputs downlink signals. The invention can avoid the abnormal communication between the deep-space detector and the ground radio-frequency test system and the potential safety hazard of the deep-space detector caused by improper setting of the ground radio-frequency test system during the test of the deep-space detector.

The invention provides power distribution network asymmetric fault in-situ positioning method based on distributed power supply information. The method comprises the following steps: acquiring a three-phase voltage amplitude of a bus of a power distribution network, a positive sequence voltage of each distributed power supply grid-connected point and an outgoing line positive sequence current of each distributed power supply grid-connected point in real time; judging whether the power distribution network has an asymmetric fault according to the three-phase voltage amplitude of the bus of the power distribution network; calculating the positive-sequence equivalent impedance of the downstream of the distributed power supply before the fault; calculating the downstream positive-sequence equivalent impedance of the distributed power supply after the fault; calculating a positive sequence equivalent impedance ratio at each distributed power supply; and comparing the positive sequence equivalent impedance ratio with a setting value, judging a fault section, and outputting the position of the fault section.

The invention relates to a two-wire system power carrier communication device, which comprises a carrier system power supply bus, a signal coupling circuit, a signal conversion circuit, an MCU, a power conversion circuit and a subsystem power supply conversion circuit, and is characterized in that the signal coupling circuit is directly connected with the carrier system power supply bus, the signal conversion circuit is directly connected with the signal coupling circuit and the MCU, the power conversion circuit is directly connected with a carrier system power supply bus, and the subsystem power supply conversion circuit is directly connected with the power conversion circuit; a two-wire system power supply carrier communication method comprises the following steps: step 1, carrier system power supply bus signal stripping; step 2, signal conversion; and step 3, MCU processing. The invention provides a high-speed, stable and long-distance transmission communication device and method.

The application provides a method and device for selecting a link, and is applied to a vehicle-mounted access point AP in a wireless grid Mesh network. The vehicle-mounted AP is used for starting a first frequency section and a second frequency section, the link is established by the vehicle-mounted AP, a plurality of detected trackside APs of the first frequency section and a plurality of detected trackside APs of the second frequency section, and the first frequency section is a preferential frequency section. The method comprises the following steps: obtaining first signal strength of which the signal strength is highest from the signal strength of the detected trackside APs of the first frequency section; obtaining second signal strength of which the signal strength is highest from the signal strength of the detected trackside APs of the second frequency section; selecting one of the links corresponding to the first signal strength and the second signal strength to transmit data according to the first signal strength and the second signal strength. According to the method and the device disclosed by the application, the anti-interference property of a wireless link can be improved, and besides a communication failure caused by the ring formation of the links can be avoided.

The invention discloses a method for upgrading firmware of a device. The method for upgrading firmware of a device includes the following steps: when receiving a firmware upgrade instruction, determining other devices associated with the current device; obtaining the upgrade information of the current device, and according to The upgrade information of the current device controls the upgrade of the firmware of the current device and the firmware of the other devices. The invention also discloses a device, a device firmware upgrade device and a storage medium. The invention improves the operation reliability of the system composed of multiple devices.

The embodiment of the invention provides a control method and an electronic device. After the electronic device obtains first parameters corresponding to a first antenna and second parameters corresponding to a second antenna, the electronic device determines performance relations between the first antenna and the second antenna according to the first parameters and the second parameters. When the performance of the first antenna is superior to that of the second antenna, the first antenna is taken as a master antenna; the second antenna is taken as an assist antenna; the assist antenna is used for assisting the master antenna to send and receive signals; if the performance of the second antenna is superior to that of the first antenna, the first antenna is taken as the assist antenna; the second antenna is taken as the master antenna; in this way, when the radiation field of one antenna is shielded, the electronic device can switch the master and assist relations between the two antennas; therefore, the electronic device can send and receive data normally; and the communication stability of the electronic device can be ensured.

A communication network delay jitter smoothing method, device and system, the method includes: when the initialization time begins, the receiving module clears the forward delay threshold and the reverse delay threshold; Execution of each service flow fragment: determine that the maximum value of the forward delay real-time value corresponding to the current service flow fragment and the reverse delay threshold value corresponding to the current service flow fragment is greater than the forward delay threshold value When the current value of the forward delay threshold is replaced by the maximum value, the current value of the forward delay threshold is replaced. Therefore, at the end of the initialization, the delay threshold value after the initialization is determined, and applied to the delay compensation, which can significantly reduce the two-way asymmetric delay jitter, and prevent the problem of user communication abnormality caused by jitter exceeding the limit .

The invention discloses a gateway rotation method, system and device for data transmission based on the CANopen protocol. The method includes: the host of the gateway enters the online state, and monitors the state of the heartbeat packet with the gateway backup machine through the communication network of the master and backup machines; If the heartbeat packet of the backup machine cannot be detected within the set heartbeat period, and the heartbeat packet of the master machine is successfully sent on the communication network of the master machine and the standby machine, the master machine will remain online and the backup machine will be offline; if the heartbeat packet of the master machine is sent on the communication network of the master machine If the transmission fails, the host will request the backup machine to go online through any communication network in the vehicle; if the response request from the backup machine cannot be received, the host will stop requesting the backup machine of the first communication network in the vehicle to go online, and request the backup machine through another communication network in the vehicle. The backup machine goes online; if the response request from the backup machine is still not received, the host computer remains online and records that the backup machine is offline. Thus, the good operation of the whole train is guaranteed, and the redundancy effect of the train network is improved.

The invention provides a WIFI communication ARP fool-proof control method based on a POS. the method comprises the following steps of S, starting POS; S2, judging whether to use WIFI communication ornot, if yes, entering the step S3, and if not, timing for a first preset time and repeating the step S2; S3, judging whether the WIFI connection is successful or not, if yes, entering the step S4, andif not, entering the step S2; S4, judging whether the IP address is successfully acquired or not, if yes, entering the step S5, and if not, entering the step S2; and S5, timing a second preset time to send a Gratiitoues ARP to the WIFI wireless router, and requesting the physical address of the IP address of the POS. The invention further provides a POS system with the WIFI communication ARP fool-proof function and a computer readable storage medium.

The present invention provides a communication system, a communication device, a power supply device, and a vehicle, wherein the communication system is used to connect the vehicle and the power supply device through a charging cable that accommodates a power supply line and a control line, and is used in such as using the control line as a medium In communication such as in-band communication in which communication signals are transmitted and received, it is possible to suppress the occurrence of communication abnormalities while keeping the noise applied to the power supply line at or below a prescribed upper limit. The power supply device (2) reads the settings related to the output of each frequency stored in the memory unit (221b) in advance, and based on the read settings, performs a function for adjusting the output waveform related to the communication signal transmission to the preset Mapping processing of amplitudes set for each frequency. Furthermore, by subjecting the mapped communication signal to inverse Fourier transform, the power supply device (2) converts the communication signal expressed as digital data in the frequency domain into digital data in the time domain, and D / A converts the digital data into an analog data.

The invention discloses a login verification method for a remote education client, and aims to solve the problem of communication exception since the client is not disconnected from a server after logging out. The method comprises the following steps: receiving a request of sending a heartbeat message from the client, and acquiring a login state identifier of the client; judging the login state of the client according to the login state identifier; and determining whether to send the heartbeat message to the server or not according to the login state. Through adoption of the method, the login state of the client is judged through the acquired login state identifier in order to determine whether to send the heartbeat message to the server by an SDK (Software Development Kit) or not, so that the problem of communication exception between the client and the server since a TCP (Transmission Control Protocol) connection between the client and the server is not broken and the SDK continually sends the heartbeat message to the server after the client logs out is solved.