Multi-layer distributed LoRa network based on channel subscription

A distributed and channel technology, applied in the field of computer communication, can solve the problem of not supporting two-way data transmission, and achieve the effect of reducing costs

Active Publication Date: 2021-01-15
BEIHANG UNIV YUNNAN INNOVATION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a multi-layer distributed LoRa network based on channel subscription to solve the problem that after reducing the cost, multiple front-end data acquisition devices can transmit data to the gateway and do not support bidirectional transmission of data

Method used

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specific Embodiment

[0038] A multi-layer distributed LoRa network based on channel subscription, including a single gateway, more than 3 relays and more than 3 front-end data acquisition devices, the gateway is set in a star structure, responsible for receiving relay uploads through the handshake protocol data, and store, process, and forward the data to the cloud platform or satellite, and at the same time receive the data sent by the cloud platform or satellite, and send the acquired data to the corresponding relay after being filtered by instructions; specifically, the gateway Set to a star structure, the front-end data acquisition equipment is provided with a front-end LoRa node and is set to be greater than 3, and 1 gateway is connected with a plurality of front-end LoRa nodes through signals;

[0039] The gateway of the star structure is a network of star topology, which belongs to the centralized control network. The entire network is controlled and managed by the central node, and the comm...

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Abstract

The invention discloses a multi-layer distributed LoRa network based on channel subscription, which comprises a single gateway, more than three relays and more than three front-end data acquisition devices, and is characterized in that the gateway is in a star structure and is responsible for receiving data uploaded by the relays, storing, processing and forwarding the data to a cloud platform ora satellite, receiving data issued by the cloud platform or the satellite, filtering the data through an instruction and issuing the filtered data to a corresponding relay; the relay is arranged between the gateway and the front-end data acquisition device, and is responsible for receiving data uploaded by the front-end data acquisition device, preprocessing, compressing, forwarding, receiving data issued from the gateway, filtering and issuing the data to the corresponding front-end data acquisition device; the front-end data acquisition device is responsible for collecting sensor data and uploading the sensor data to the relay. The problem that after the cost is reduced, data can be transmitted to the gateway by using a plurality of front-end data acquisition devices, and bidirectional transmission of the data is not supported is solved.

Description

technical field [0001] The invention relates to the technical field of computer communication, in particular to a multi-layer distributed LoRa network based on channel subscription. Background technique [0002] LoRa is one of the popular technologies specially designed for IoT wireless transmission, which maintains the same low power consumption characteristics like FSK modulation, but significantly increases the communication distance. LoRa technology itself has super high receiving sensitivity (RSSI) and super signal-to-noise ratio (SNR). In addition, frequency hopping technology is used to perform frequency shift keying through pseudo-random code sequences, so that the carrier frequency is continuously hopped and the spectrum is expanded to prevent fixed-frequency interference. Multiple devices are connected to a gateway, typically using a LoRaWAN-based mobile network. However, the cost of LoRaWAN gateway is too high. Therefore, in some low-frequency acquisition, low-...

Claims

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Application Information

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IPC IPC(8): H04W4/38H04W4/70H04W28/06H04W28/08H04W52/02H04B7/185
CPCH04W4/38H04W4/70H04W28/06H04W28/08H04W52/0248H04B7/18578Y02D30/70
Inventor 郭虓李奇冷杉孙康文
Owner BEIHANG UNIV YUNNAN INNOVATION INST
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