Mass LoRa node rapid ad hoc network communication method based on wireless ranging technology

Abstract

A mass LoRa node rapid ad hoc network communication method based on a wireless ranging technology is applied to the technical field of wireless communication of seismic exploration nodes, related equipment comprises a gateway and a terminal node, the gateway is used for collecting data of the seismic exploration nodes in a centralized mode, and the seismic exploration nodes are used for collecting and transmitting needed data. Comprising the following steps that networking and communication are carried out between a LoRa gateway and seismic exploration nodes, and rapid network access is completed by adopting a wireless ranging technology, an improved K-Means unsupervised clustering grouping technology and a conflict back-off and frequency hopping mechanism; and the LoRa terminal node enters a monitoring mode to wait for gateway calling. And each LoRa terminal node is identified by the mac address, so that point-to-point communication is facilitated. The method has the characteristics of networking grouping automation, network access rapidness and low power consumption of the seismic exploration nodes, and is very suitable for quality control detection of massive seismic exploration nodes.

Description

technical field [0001] The invention belongs to the technical field of LoRa wireless communication, and in particular relates to a fast ad hoc network communication method for massive LoRa nodes based on wireless ranging technology. Background technique [0002] In the field of wireless communication technology, LoRa wireless communication is one of the important technologies. LoRa refers to long-distance radio. It is a linear frequency modulation spread spectrum modulation technology. Because of its advantages such as long transmission distance, low power consumption, and flexible networking, it is widely used in some industries. In the field of seismic exploration, traditional wired exploration is gradually being banned by wireless exploration, and LoRa is also emerging in this field due to its advantages. A LoRa network system is generally composed of servers, gateways and terminal nodes. Gateways and servers are generally connected through 5G / 4G / 3G / GPRS. Gateways and te...

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Problems solved by technology

However, in the above method, each terminal node enters the network, and the LoRa gateway needs to broadcast once, and each broadcast will wake up all terminal nodes, resulting in increased power consumption, and when a certain terminal node transmits data to the gateway, it will also wake up other terminals. Related terminal nodes lead to a further increase in power consumption; and it takes a certain amount of time for the terminal nodes to wake up in the monitoring mode for networking. When the number of terminal nodes is large, the wake-up time of each terminal node is accumulated, and the time for networking will grow significantly

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