5results about How to "Avoid communication interference" patented technology

The invention discloses an equipment secure connection method based on a web Bluetooth API, a security system and a computer readable medium, and relates to the technical field of wireless communication, and the method comprises the steps: negotiating and selecting an elliptic curve parameter between user equipment and target equipment, generating a private key, calculating a public key, exchanging the public key, calculating a shared key, and establishing a secure session. A secure connection mechanism is established, so that the user equipment and the target equipment perform secure connection and secure communication through the first shared key and the second shared key respectively, and the connection, the connection keeping state or the communication process can only occur between the first shared key and the second shared key which are equal and authorized. Equipment without a shared key is prevented from acquiring user data or information, so that the security of connection and communication between the equipment is protected; the generated secret key can only be used by legal equipment, so that the security and integrity of subsequent data transmission are ensured, and the security of data interaction between the equipment is improved; communication interference of other devices can be avoided, a third party is prevented from acquiring or interfering data transmission, and the stability of connection between the user equipment and the target device and the data transmission rate are improved.

The invention provides a communication device, method and system and a computer storage medium, and relates to the field of communication. In the application, the communication device is configured with a plurality of virtual subnets, different types of target devices communicate in the corresponding virtual subnets, and due to communication isolation between different virtual subnets, the problem of communication interference when a plurality of devices communicate in the same communication network can be avoided, and the communication reliability is improved. In addition, in the application, a communication mode adopted during communication is that one-way repeated transmission is carried out on the same data according to different time intervals. The success rate of receiving the sent data by the receiving device can be improved due to repeated sending, the communication reliability is further improved, in addition, the data is sent in a one-way mode, the receiving device does not need to reply corresponding information, the time for replying the information by the receiving device is shortened, and the communication efficiency can be improved.

The invention relates to the technical field of communication testing, in particular to a gateway batch testing device and method and a readable medium, and the testing device comprises a connection module which is used for connecting a plurality of gateway devices to be tested at the same time and providing an independent communication channel for each gateway device; the test task generation module is used for generating a plurality of test tasks according to a preset test scene; the batch test control module is used for controlling connection and initialization of a plurality of gateway devices and scheduling of test tasks; according to the invention, a plurality of gateway devices are simultaneously connected through the connection module, and an independent communication channel is provided for each device, so that the stability of a test environment and the independence of a test process are ensured, communication interference among the devices can be effectively avoided, and a reliable basis is provided for subsequent test task execution.

The application provides a single firewire communication method based on current detection and thyristor modulation, comprising: calibrating zero-crossing timing reference and reference current; establishing mapping of data symbols and thyristor conduction angle and dynamically adjusting according to loop current size, encoding to-be-transmitted data to generate encoding sequence; converting the encoding sequence into a thyristor trigger signal to drive the conduction angle to conduct at the corresponding moment, generating stable current fluctuation through conduction angle modulation and transmitting to the receiving end; the receiving end collects loop current fluctuation signals in real time and processes them through multi-stage filtering to obtain effective current signals, initializes decoding threshold according to the reference current, identifies the conduction angle change corresponding to the effective current signals to restore the symbols, and outputs after checking the symbols. The thyristor specific conduction angle is used for data encoding, the small change of the detected loop current is used for data decoding, and the problems of unstable communication and high decoding error rate in the single firewire small current scene are solved.

The invention provides a wireless communication system transmission control method, which comprises a plurality of communication node devices, a central node device is arranged, a communication time period is determined, and the central node device and each communication node device carry out periodic communication receiving and sending according to the communication time period. Each communication time period is divided into a heartbeat time slot, a downlink time slot and an uplink time slot; the central node equipment broadcasts and sends system heartbeat in a heartbeat time slot of each communication time period, carries out communication sending in a downlink time slot and carries out communication receiving in an uplink time slot; and other communication node devices are aligned according to the heartbeat time of the system, only perform communication receiving in the downlink time slot and perform communication sending in the uplink time slot. According to the invention, the communication receiving and sending time of all the communication node devices is periodically distributed and controlled, so that the communication interference caused by concurrence of a plurality of communication node devices is effectively solved, and the communication performance and the success rate of a communication system are improved.