Communication method and communication device based on NB-IoT and LoRa

A technology of communication equipment and communication method, which is applied in the field of communication, can solve problems such as the lack of consideration of LoRa fusion, high operating costs of wide-area information monitoring systems, and limited transmission distance, so as to improve communication accuracy, reduce equipment energy consumption, and improve The effect of transmission distance

Active Publication Date: 2018-11-13
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
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AI Technical Summary

Problems solved by technology

However, the local area network communication using LoRa has the problem of limited transmission distance, and the wide area network communication using 2G, 3G, and 4G has the problem of high operating costs of the wide area information monitoring system. The integration of LoRa and NB-IoT is not considered in the existing technology to communicate

Method used

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  • Communication method and communication device based on NB-IoT and LoRa
  • Communication method and communication device based on NB-IoT and LoRa
  • Communication method and communication device based on NB-IoT and LoRa

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specific Embodiment approach 1

[0038] Specific implementation mode one: as Figures 1 to 3 As shown, the implementation process of a communication method based on NB-IoT and LoRa described in this embodiment is:

[0039] The master node (NB-IoT and LoRa Device, routing) judges whether it has received the LoRa frame data from the child node (LoRa recive),

[0040] If the master node receives the LoRa frame data from the child node, it will be stored in the receiving buffer area, and the valid data of the frame data will be read according to the improved LRU algorithm, and the valid data after reading will be stored in the sending buffer area;

[0041] Then report the data in the sending buffer to the server through NB-IoT. The process of reporting data is: determine whether NB-IoT is connected; if NB-IoT is connected, send the data in the sending buffer to the server; if not connected, return to The receiving starting point, that is, the master node (NB-IoT and LoRa Device, routing) continues to judge wheth...

specific Embodiment approach 2

[0058] Specific implementation mode two: as Figure 4 with Figure 5 , this embodiment provides the specific structure of the sub-node hardware system and the master node hardware system that realize the above-mentioned communication method:

[0059] 1. Sub-node hardware system design

[0060] Sub-node hardware system design: The sub-node is designed as a separate LoRa communication node. The sub-node hardware system mainly realizes functions such as sensor information collection, LoRa communication, low power consumption, and solar and battery power supply. The sub-node hardware design mainly includes four parts: microcontroller unit, communication unit, information acquisition unit and power supply unit. The block diagram of sub-node hardware design is as follows: Figure 4 shown.

[0061] The microcontroller unit adopts the Cortex M3 core stm32f103 series microcontroller stm32f103ZET6 produced by ST Company, with three 12-bit analog-to-digital converters, up to 21 input...

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Abstract

The invention relates to a communication method and communication device based on NB-IoT and LoRa and relates to the technical field of communications for improving the transmission distance and reducing the operation cost of the wide area information monitoring system. A master node determines whether LoRa frame data transmitted via a child node is received; if the master node receives the LoRa frame data transmitted by the child node, the data is stored in a receiving cache region; effective data reading is carried out on the frame data according to an improved LRU algorithm, and the effective data after being read is stored in a transmission cache region; the data in the transmission cache region is reported to a server through NB-IoT and is judged whether to be linked; if being linked,the data in the transmission cache region is transmitted to the server; if not being linked, a receiving start point is returned to. The child node hardware system is used for realizing sensing information collection and LoRa communication; and the master node hardware system is used for achieving LoRa communication, NB-IoT communication, sensor information collection and liquid crystal display.The communication method and communication device based on NB-IoT and LoRa in the invention can be integrated with the LoRa and NB-IoT communication protocols at the same time.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a communication method and communication equipment based on the integration of NB-IoT and LoRa. Background technique [0002] LoRa technology is a wireless communication technology based on spread spectrum modulation technology. It has the characteristics of long transmission distance, low transmission power consumption, and strong anti-interference. It has been gradually promoted and applied in fields such as environmental monitoring and industrial control. NB‐IoT is a new 3GPP wireless access technology designed to achieve excellent performance over traditional GSM and LTE technologies, featuring strong links, high coverage, low power consumption, and low cost. However, the local area network communication using LoRa has the problem of limited transmission distance, and the wide area network communication using 2G, 3G, and 4G has the problem of high operating cos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H02J7/35
CPCH02J7/35H04L67/12H04L67/568
Inventor 张喜海张明明许绥佳乔岳李想赵语杭
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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