Communication device, system and communication method

Abstract

The invention discloses communication equipment, a system and a communication method. The communication method comprises the steps of: receiving a communication state of other equipment transmitted from a receiving network in real time, sending an own communication state to outside at a preset interval, and recording the own communication state and the received communication state of other equipment, analytically processing and responding the communication state of other equipment, wherein the communication state is transmitted in a form of UDP (User Datagram Protocol) packet in a transmission process. According to the invention, a stable and reliable multi-equipment mutual communication method based on the UDP is realized, the traditional command communication is replaced with state communication, the resources occupied by the UDP are reduced with respect to that occupied by TCP (Transmission Control Protocol), and various problems such as instruction complexity, state asynchronization, packet loss and the like in UDP communication are solved, so that the communication method is particularly suitable for embedded equipment, especially a situation of communication among a plurality of pieces of equipment.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a communication device, system and communication method. Background technique [0002] In network communication systems such as intercom systems and security alarm systems, in order to realize network communication between multiple devices, TCP or UDP is currently used for network transmission, and corresponding communication command systems are designed to complete communication between multiple devices. The communication process uses TCP communication, which consumes more resources in some embedded devices, and a thread needs to be started to send and receive data. It is simpler when the communication is only one-to-one, but when multiple devices interact at the same time, it is difficult to control the number of threads and the synchronization problems caused by multi-threading. However, some embedded systems have limited resources and may not support TCP or the...

AI Technical Summary

Problems solved by technology

It is simpler when the communication is only one-to-one, but when multiple devices interact at the same time, it is difficult to control the number of threads and the synchronization problems caused by multi-threading

However, some embedded systems have limited resources and may not support TCP or the supported TCP threads are limited and have been occupied by other modules. At this time, other methods must be considered

When using UDP communication, there may be the following problems: UDP packet loss, poor state synchronization, command retransmission, command confirmation, network fault detection, etc.

UDP is an instruction-based communication, which needs to be confirmed by sending instructions. The instruction system is usually composed of multiple instructions, and the corresponding code algorithm is also relatively complicated.

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