OTA implementation method based on LoRaWan, terminal equipment and computer storage medium

Abstract

The invention discloses an OTA implementation method based on LoRaWan, and relates to the technical field of wireless communication. The method comprises the steps that a node is powered on and started, and a heartbeat message is reported regularly; a server imports firmware needing to be upgraded, determines a list of nodes needing to be upgraded, and sets the state of the nodes in the list as a common state; after the server receives the heartbeat message, whether the node needs to be upgraded or not is judged; the server sets the state of the node as an upgrading state; a firmware subpackage request is initiated to the server; after receiving the firmware subpackage request, the server determines the length of the subpackage data according to the real-time spread spectrum factor to subpackage the firmware, and sends the length of the subpackage data and the subpackage data to the node; and the nodes accumulate and store the lengths of the sub-packaged data and store the sub-packaged data at the same time. According to the invention, during firmware upgrading, mode switching is not needed, and breakpoint retransmission can be carried out; meanwhile, in the upgrading process, normal work of other nodes is not affected.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a LoRaWan-based OTA implementation method, a terminal device and a computer storage medium. Background technique [0002] LoRaWan node types include class A, class B and class C. Class A opens two short receiving windows after uploading data, and then ends the communication; class B can open receiving windows for a certain period of time on the basis of class A; class C can always open receiving window 2. At the same time, LoRaWan is a long-distance wireless communication method. When the maximum transmission power is limited, if you want to increase the communication distance, you have to sacrifice the communication rate. This makes each message carry extremely limited payload data under the standard protocol. Generally, it is around 50 bytes to 200 bytes. Calculated according to the slowest sending rate, it takes 4 or 5 seconds for a message to be sent....

AI Technical Summary

Problems solved by technology

The next time you restart the upgrade, you need to switch back to the class C mode and start transferring the firmware program from the beginning, which also greatly increases the power consumption of this type of terminal node;

[0007] 3. When the firmware is being upgraded, when the gateway continuously communicates with a certain node, the time can be as short as tens of minutes or as long as several hours, which will affect the communication function of other nodes, and other nodes will also affect this node communication success rate, resulting in low communication efficiency of the entire network

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