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

A wireless distance measurement and communication method technology, applied in wireless communication, radio wave measurement system, advanced technology, etc., can solve the problems of wake-up time accumulation, power consumption increase, and time-consuming increase, so as to reduce the number of times, reduce power consumption, The effect of easy management

CN114501344APending Publication Date: 2022-05-13NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-05-13

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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.
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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...

Examples

Embodiment Construction

[0030] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 Shown is a block diagram of the gateway and terminal node structure of the present invention, wherein the gateway is composed of five sub-gateways with different frequencies, the default sub-gateway communication frequency is freq1, and sub-gateways of other frequencies are used for frequency hopping communication. The default related parameters burned in the terminal node devices include: communication frequency, spreading factor, bandwidth, and mac address, etc., where the communication frequency is freq1 by default.

[0032] The temporary on-site situation of the LoRa network is: a gateway and a large number of terminal nodes. According to the actual measurement, the terminal nodes are arranged within the scope of the monitoring gateway.

[0033] The present invention is a mass LoRa node rapid self-organiz...