Data transmission method of wireless networking system and wireless networking system

Abstract

The embodiment of the invention provides a data transmission method of a wireless networking system and the wireless networking system. The method comprises the following steps: dividing a superframeinto a reserved time slot, an exclusive broadcast beacon time slot of an aggregation node and an exclusive receiving time slot; broadcasting a beacon frame of the aggregation node in the exclusive broadcast beacon time slot of the aggregation node; receiving a data packet of the collection node in the exclusive receiving time slot of the aggregation node; judging whether the acquisition node is afirst non-networked node or a networked node; if the node is the first non-network-access node, setting a first network access configuration parameter and writing the first network access configuration parameter into the next beacon frame; if the node is a networked node, acquiring monitoring data and uploading the monitoring data to an upper computer in the wireless networking system; and if thedata packet contains the network access application of the second non-network-access node, setting a second network access configuration parameter and writing the second network access configuration parameter into the beacon frame of the next superframe. The whole network is managed through the aggregation node, and the exclusive data sending time slot is divided for each acquisition node, so thatintra-network interference can be avoided, and the network performance is improved.

Description

technical field [0001] The present application relates to the technical field of wireless communication, and in particular to a data transmission method of a wireless networking system and a wireless networking system. Background technique [0002] With the rapid development of wireless communication and LORA (Long Range Radio, long-distance radio) technology, LORA technology is more and more applied to the field of sensing data acquisition and transmission due to its low power consumption and long transmission distance, such as , in the field of modern agricultural data collection and transmission with wide range, long distance, and inconvenient wiring, using LORA technology to wirelessly network sensors can obtain agricultural data that is conveniently collected by sensors, such as temperature, relative humidity, water level, light, etc. ; In the field of electric power, it is convenient to collect data such as wire temperature, wire current, water immersion, water level, ...

AI Technical Summary

Problems solved by technology

The star network system includes a sink node and multiple collection nodes respectively connected to the sink node. The data collection is realized by the polling of the sink node or the active reporting of the collection node. However, the coverage of the star network is limited by the communication distance, and the network Limited capacity, not suitable for large-scale application scenarios

The Mesh network system includes multiple aggregation nodes. Each aggregation node is connected to multiple collection nodes. Each aggregation node manages its nearby collection nodes. There will be mutual interference between them, resulting in poor networking performance

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