A LoRa multi-hop communication method and system for field rescue

Abstract

The invention discloses a LoRa multi-hop communication method and system for field rescue. The system includes a rescue node terminal, a network access node terminal, a LoRa gateway, a server, and a remote information terminal; after the network access node terminal joins the LoRaWAN network where the LoRa gateway is located, Work in Class C mode, and communicate with the rescue node terminal in the Receive Window RX2 window specified by LoRaWAN. The rescue node terminal, network access node terminal and LoRa gateway form a LoRa multi-hop communication network. The LoRa multi-hop communication method and system for field rescue disclosed by the present invention have better field adaptability, and can enable search and rescue personnel to obtain information such as the location of the rescue personnel faster and more accurately, and at the same time upload the location information of the search and rescue personnel themselves in time , which provides a guarantee for improving rescue efficiency and ensuring the safety of search and rescue personnel.

Description

technical field [0001] The invention belongs to the field of Internet of Things, and in particular relates to a LoRa multi-hop communication method and system for field rescue. Background technique [0002] When people conduct field exploration, exploration, camping or tourism, due to complex environments such as deserts, swamps or forests, as well as abnormal climate changes, once danger occurs, they need to call for help in time; however, due to complex environment and other factors, rescue It is difficult for the team to obtain information such as the current location and movement trajectory of the emergency callers in the first time, resulting in delays in the golden rescue time. The typical feature of the Internet of Things is to form a wireless self-organizing network system through sensing nodes deployed in the monitoring area, so as to cooperatively sense, collect and process the information of the sensed objects in the network coverage area, and send it to the obser...

AI Technical Summary

Problems solved by technology

[0007] Different from many existing researches on how to use routing protocols for multi-hop communication between LoRa terminals, the present invention provides a method for the current research status that most LoRa terminal products are developed based on LoRaWAN specifications and LoRaWAN only supports single-hop communication. A LoRa multi-hop communication method and system for field rescue will have very good promotion and application advantages

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