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Time synchronization method, device and system and computer storage medium

A time synchronization and first-time technology, applied in the field of communication, can solve the problems of increasing LoRaWAN complexity, high cost, and poor effect

Pending Publication Date: 2020-01-10
武汉慧联无限科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used solution for keeping time synchronization between Class B terminals and gateways has the disadvantages of high cost, increased complexity of LoRaWAN, and poor results

Method used

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  • Time synchronization method, device and system and computer storage medium
  • Time synchronization method, device and system and computer storage medium
  • Time synchronization method, device and system and computer storage medium

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Embodiment Construction

[0139] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the specific technical solutions of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present invention. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0140] In order to facilitate the understanding of the present invention, firstly, a brief introduction is made to the related technologies of LoRaWAN.

[0141] LoRaWAN is a system architecture designed based on the long-distance (LoRa, Long Range) communication protocol, which is widely used in the Internet of Things. The system architecture is as follows: figure 1 As shown, the communication terminal is connected to the gateway through the LoRa wireless communication mode; the gateway is connected to the network server through the Internet Protocol...

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Abstract

The invention discloses a time synchronization method, a time synchronization device, a time synchronization system and a computer storage medium, which are applied to a network server. The method comprises steps of receiving IP uplink data of internet protocol; determining the type of the forwarding gateway and the terminal identifier of the communication terminal based on the IP uplink data; when the type of the forwarding gateway is an indoor gateway, sending a time synchronization request to the forwarding gateway, wherein the time synchronization request is used for indicating the forwarding gateway to send a first time synchronization message to the outdoor gateway, the first time synchronization message is used for indicating the outdoor gateway to send a second time synchronizationmessage to the network server; receiving at least one second time synchronization message, and obtaining current global positioning system (GPS) time corresponding to the first local time of the forwarding gateway based on the at least one second time synchronization message; sending downlink data at least comprising the current GPS time and the terminal identifier to a forwarding gateway, wherein the downlink data is used for indicating the forwarding gateway to perform time synchronization with the communication terminal based on the downlink data.

Description

technical field [0001] The present invention relates to long-distance radio (LoRa, Long Range Radio) technology in the communication field, and in particular to a time synchronization method, device, system and computer storage medium. Background technique [0002] In Long Range Radio Wide Area Network (LoRaWAN, Long Range Radio Wide Area Network), communication terminals are mainly divided into three types: A-level two-way communication terminals, also known as Class A terminals, and B-level two-way communication terminals, also known as Class B Terminals, and Class C two-way communication terminals, also known as Class C terminals. Among these three types of communication terminals, due to the characteristics of Class B terminals, Class B terminals need to maintain time synchronization with the gateway to ensure normal data sending and receiving. However, the currently commonly used solution for maintaining time synchronization between Class B terminals and gateways has t...

Claims

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Application Information

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IPC IPC(8): H04J3/06H04L29/06
CPCH04J3/0638H04L69/22
Inventor 钟浩杨广学
Owner 武汉慧联无限科技有限公司
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