66results about How to "Avoid communication conflicts" patented technology

The invention relates to a distributed battery management system, which comprises at least two battery mould groups, each battery mould group is connected respectively with a battery management mould through a corresponding collecting mould that is externally connected with a jumper circuit. The invention also discloses a management method of the distributed battery management system. In respect of the method of the invention, the collecting mould is externally connected with the jumper circuit which is used for setting different states of I/O port of every collecting mould, a corresponding CAN bus address is given to each collecting mould by pointing to every state so as to distinguish signals sent by each collecting mould, thus resolving the communication dispute of the distributed battery management system.

The invention relates to a working method for a satellite communication system based on single channel single carrier time division multiple access, which comprises the following operating steps: (1) when a satellite communication network is established initially, all ground base stations compete for a temporary centre base station which acquires the information of the ground base stations of thenetwork in a mode of calling the name, and when calling the name, all the ground base stations adopt a competition mode to finish the response of calling the name; (2) the temporary centre base station elects the optimal centre base station of the current network according to the information of all the ground base stations in the network; (3) the temporary centre base station delivers controllingright and the information of the ground base stations to the centre base station at the same time; and (4) the centre base station manages the space-time link resources of the whole satellite network, and controls the network to operate normally as follows: the centre base station firstly distributes TDMA frame slot time, and performs the respective keep-alive control together with the common ground base station; and the centre base station also comprises all the controlling operations such as the distribution of data slot time, the addition of new ground base station and the departure of theground base station.

The embodiment of the invention provides a user equipment identifier allocation method, device and system, and relates to the field of communication. A D2D (Device-to-Device) communication identifier comprises a preset equipment management entity ID and a temporary ID, so that transmission redundancy is reduced, and communication interference is also avoided. The method provided by the embodiment of the invention comprises the following steps: an equipment management entity receives a notice that first user equipment starts D2D communication service; the equipment management entity allocates the D2D communication identifier for the first user equipment, and the D2D communication identifier comprises a preset equipment management entity identifier ID and a user equipment temporary-identifier ID, wherein the user equipment temporary-identifier ID is unique in the coverage area of the equipment management entity, and the equipment management entity ID corresponds to the equipment management entity; the equipment management entity sends the allocated D2D communication identifier to the first user equipment.

The invention provides a communication method of a wireless local area network, a communication device of the wireless local area network, a station and an access point. The communication method of the wireless local area network comprises generating a first message frame which comprises number information of basic service sets of station statistics and CCA values corresponding to the basic service sets, and sending the first message frame to the access point. The number information of the basic service sets and the CCA values corresponding to the basic service sets are used by the access point to set a CCA value of the access point. According to the technical scheme, the access point can set the relative accurate CCA value and the relative accurate number of the basic service sets, so a communication conflict can be prevented from occurrence as far as possible, and the handling capacity of a system is indirectly improved.

The embodiment of the invention discloses a serial port time sharing multiplexing method and a system and relates to the field of communication. According to the serial port time sharing multiplexing method and the system, a console stops to access the serial port when an application program accesses the serial port through leading out a prohibitive interface, an enabling interface and providing a set of second serial driver in an embedded operating system; when the application program stops to access the serial port, the console recovers to access the serial port, so that the console and the application program can multiplex the serial port in a time-sharing manner, and the communication conflicts are avoided. The method of the embodiment comprises the following steps: the prohibitive interface and the enabling interface are led out by the first serial driver; when the application program requires to access the serial port, the console is informed to suspend to access the serial port by the second serial driver through the prohibitive interface; the application program accesses the serial port through the second serial driver; when the application program is not required to access the serial port, the application program stops to access the serial port, the console is informed to recover to access the serial port by the second serial driver through the enabling interface.

The invention belongs to the technical field of a communication system, and specifically relates to a CAN bus accurate timing and assembly line testing communication system and method which can achieve high-reliability, high-precision, assembly line type and hot plug type communication with a servo driver. The system comprises an actuator A, an actuator B, an actuator C, a driver A, a driver B, a driver C, a ground control power supply module A, a CAN bus communication interface card, a CAN bus timing communication system, a ground power power-supply module B and a CAN bus. The ground power power-supply module B is connected with the actuator A, the actuator B and the actuator C. The ground control power supply module A is connected with the driver A, the driver B and the driver C. The CAN bus is connected with the driver A, the driver B and the driver C. The actuator A is connected with the driver C, the actuator B is connected with the driver B, and the actuator C is connected with the driver A.

The present invention provides a time-sharing serial communication method and system, and relates to the technical field of communications. The method comprises: establishing an electrical connection between a master and a slave; obtaining configuration parameters of a communication serial port of the master, and performing parameter configuration to a communication serial port of the slave according to the configuration parameters; sending first data to the slave by the master, and after the first data is received by the slave, delaying a first preset time and returning a response to the master; and if the response returned from the slave is received by the master within a second preset time, sending second data to the slave after the first preset time is delayed, wherein the second preset time is greater than the first preset time. According to the time-sharing serial communication method and system, serial communication is not affected by the number of transmitted bytes, so as to avoid the problem in the prior art of communication conflict between sending-receiving and resending that easily occurs when the number of the transmitted bytes is large, thereby greatly reducing communication error rate.

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.

The invention provides a data transmission method for a wireless cellular network, a base station, and a terminal. The wireless cellular network comprises two Internet of Things (IoT) communication shared channels with different frequencies, i.e., an uplink channel and a downlink channel. The method comprises the following steps: when data is to be sent to a base station side, monitoring whether the uplink channel is idle or not; when the uplink channel is idle, sending the data through the uplink channel in the form of an information frame, wherein the information frame comprises identity information of a terminal, and identification information of the information frame; and receiving a response data frame corresponding to the information frame through the downlink channel, and determining that data transmission is complete when the response data frame indicates that the information frame is correctly transmitted, wherein the response data frame comprises the identification information of the information frame. The method, the base station and the terminal adopting the technical scheme have the advantages that command expenses during communication can be reduced, and the efficiency of a communication system can be improved.

The invention discloses electronic equipment. The electronic equipment comprises: a first processor; a second processor, wherein the first processor is connected with the second processor through a signal line; and an internal memory which comprises an input/output port, wherein the first processor and the second processor are connected with the input/output port through a connection bus. The invention further discloses a communication method of the dual processors. According to the invention, a simple line connection relationship and a single-port RAM with low price are adopted to achieve communication between the two processors; and after the interrupt signal of the other processor is received, the processor is communicated with the path between the processor and the internal memory, reads the target data and writes the associated data, so that the communication conflict caused by the simultaneous access of the two processors to the internal memory can be effectively avoided, and theproduction cost of the electronic equipment is reduced.

The invention provides a communication method and a communication device of a wireless local area network, and communication equipment. The communication method of the wireless local area network comprises the steps of generating a waking frame that is used for waking a data frame receiver of the equipment to enter a waking state to receive data frames; determining spectrum resources sending the waking frame, wherein the spectrum resources used for sending the waking frame are not overlapped with the spectrum resources occupied by a main communication channel, and the bandwidth of the spectrumresources used for sending the waking frame is less than that of the main communication channel; and sending the waking frame based on the determined spectrum resources. According to the technical scheme of the method provided by the invention, the sending of the waking frame does not cause interference on the main communication channel, and thus the occurrence of communication conflicts can be avoided, the improvement of the spectrum efficiency is facilitated, and the requirement of the WUR is met.

The invention provides communication methods and communication devices of a wireless local area network, an access point device and a station device, wherein the communication method of the wireless local area network for the access point device comprises the following steps: generating a wakeup message frame, wherein the wakeup message frame is used for waking up a main communication interface ofthe station device to receive downlink cache data; acquiring a first group of working frequency bands supported by the station device; determining a WUR (Wake Up Receiver) transmission channel used for sending the wakeup message frame according to the first group of working frequency bands and a second group of working frequency bands supported by the access point device, wherein the WUR transmission channel is a channel which is different from a data transmission channel of the access point device; and sending the wakeup message frame to the station device on the WUR transmission channel. According to the technical scheme in the invention, communication conflicts in the channel can be effectively avoided from occurring, so that the equipment is more power-saving and meets the requirementof IEEE 802. 11ba.

The invention provides a method and device for communication between an ECP system display terminal and a head end control unit. The ECP system display terminal is preset as a high communication priority, and the head end control unit is preset as a low communication priority. The method includes the steps that when the ECP system display terminal is ready to send a first data message and meanwhile the head end control unit is ready to send a second data message, the communication priority of a sending end of the first data message and the communication priority of a sending end of the second data message are respectively judged; when it is determined that the sending end of the first data message is a high communication priority and the sending end of the second data message is a low communication priority, the first data message is sent preferentially; after the first data message is sent, the second data message is sent. Thus, the sending sequence of the first data message sent by the ECP system display terminal and the second data message sent by the head end control unit is set, the situation that a channel is preempted by the ECP system display terminal or the head end control unit is avoided, communication conflict is avoided, and communication quality is improved.

The invention provides a multipath signal processing method of an embedded PLC system, and the embedded PLC system. The method comprises the following steps: performing first protocol conversion on a to-be-answered command sent by a main device through a processing module corresponding to the main device; in the case that effective answer data corresponding to the to-be-answered command are not recorded, putting the to-be-answered command subjected to the first protocol conversion in a corresponding queue in M queues by a learning engine; sending commands to an intelligent device in sequence according to the priorities of the M queues by a first communication apparatus, and receiving the effective answer data sent by the intelligent device, wherein the effective answer data are obtained by the intelligent device according to the to-be-answered command; performing second protocol conversion on the effective answer data through the processing module; and sending the effective answer data subjected to the second protocol conversion to the main device through a second communication apparatus.

The invention provides a multi-unmanned aerial vehicle scheduling communication port distribution method and system. The method comprises the following steps: dividing communication spectrum resourcesof a scheduling server into a plurality of frequency bands; verifying the identity of the unmanned aerial vehicle; after the verification is passed, respectively setting communication frequency bandsused for acquiring a to-be-executed task for the plurality of unmanned aerial vehicles; and distributing port resources to the communication frequency bands set by the plurality of unmanned aerial vehicles. According to the invention, the task execution efficiency and reliability of the unmanned aerial vehicle are improved, the communication efficiency between the unmanned aerial vehicle and thescheduling server is improved, and the utilization rate of the communication port is improved.

The invention discloses a wireless communication system and method for micro-rail vehicle control, and the system enables a rail line to be divided into a plurality of sections through a positioning mark, a trackside communication unit is installed at the central position of each section, the reliable communication range covered by the trackside communication units is a communication section, andeach communication section is provided with a communication channel. The communication channels of the adjacent communication sections are different, the trackside communication units are connected through a field bus, a vehicle-mounted communication unit is installed on the carriage, the vehicle-mounted communication unit establishes connection with the trackside communication units by switchingthe communication channels, and the trackside communication units allocate communication addresses to the vehicle-mounted communication unit. And the trackside communication units exchange data with the vehicle-mounted communication unit in turn in a time-sharing manner to realize information interaction between the trackside communication unit and the vehicle-mounted communication unit. The problems that existing micro-rail vehicle communication is prone to interference, and real-time performance and safety cannot be guaranteed are solved.

The invention provides a communication method, a carrier agent module and a transformer area fusion terminal. The method comprises the following steps: receiving forwarding requests sent by a plurality of carrier service applications; storing to-be-sent data sent by each carrier service application into a to-be-sent queue; and sending the to-be-sent data in the to-be-sent queue to a carrier communication device one by one according to the high-low sequence of the forwarding priorities. In the scheme, when forwarding requests sent by a plurality of carrier service applications are received, to-be-sent data sent by each carrier service application is stored in a to-be-sent queue. The to-be-sent data in the to-be-sent queue is sent to the carrier communication device one by one according to the high-low sequence of the forwarding priorities, so that the communication conflict between a plurality of carrier service applications and the carrier communication device is avoided, and the communication stability is improved.