LoRa communication method based on multipath technology

Abstract

The invention proposes a LoRa communication method based on the multi-path technology. Through a cluster head node provided with a frequency point and a channel and a cluster node within the monitoring range of the cluster head node, LoRa communication specifically comprises the steps: defining the data format in the LoRa communication process, the network access process of the cluster node and the quit process of the cluster node. According to the invention, under the conditions that network communication is difficult, the number of nodes is large and the communication coverage range is wide,a large-capacity sensor network is laid, data is transmitted in a LoRa communication mode, and communication conflicts between cluster head nodes and communication conflicts between cluster nodes areavoided.

Description

technical field [0001] The invention belongs to the communication field of the Internet of Things, and in particular relates to a LoRa communication method based on a multi-channel technology, and the application of the time-division multiple-channel or frequency-division multiple-channel technology in the field of LoRa communication. Background technique [0002] As a long-distance and low-power communication technology, LoRa has become more and more popular, and has been applied to many fields such as agricultural irrigation, transportation, and ocean detection. The LoRa Alliance has allocated multiple frequency bands to various regions of the world, and the most commonly used frequency band in China is the 433MHz frequency band. [0003] At present, there are generally two ways to transmit the collected data of sensors using LoRa communication technology: one is direct communication without using any transmission protocol. This method has low power consumption and high ef...

AI Technical Summary

Problems solved by technology

[0003] At present, there are generally two ways to transmit the collected data of sensors using LoRa communication technology: one is direct communication without using any transmission protocol. This method has low power consumption and high efficiency, and is suitable for small-scale and long-distance application scenarios. However, When the scale of the scene reaches hundreds or thousands of sensor nodes, it is inevitable to encounter the problem of access conflicts

The other is to use the LoRaWAN protocol specified by the LoRa Alliance. The protocol has detailed specifications for node access authentication, communication frame structure, receiving window, data encryption, etc., which can ensure stable and reliable node transmission. However, the implementation of the protocol stack requires To increase node processing capacity and power consumption overhead, a dedicated server is also required to deploy LoRaWAN-related services

However, the network access of each node needs to communicate with the remote server. In areas with poor network conditions, such as forests, mines, oceans and other environments, the use of the LoRaWAN protocol will be limited.

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