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Data sending and receiving methods based on LoRa

A data transmission method and original data technology, applied in the field of Internet of Things, can solve problems such as LoRa channel transmission interference, and achieve the effects of enhanced anti-interference ability, strong practicability, and low encoding and decoding complexity

Active Publication Date: 2018-09-04
TSINGHUA UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for sending and receiving data based on LoRa in order to solve the problem of serious LoRa channel transmission interference existing in the prior art

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  • Data sending and receiving methods based on LoRa
  • Data sending and receiving methods based on LoRa
  • Data sending and receiving methods based on LoRa

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Embodiment Construction

[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0038] In order to solve the serious problem of LoRa channel transmission interference in the prior art, the present invention provides a LoRa-based data transmission and reception method, and explains the LoRa-based data transmission method and data reception from the perspective of the sending end and the receiving end respectively method.

[0039] First of all, the LoRa data sending method of the sender is described as follows:

[0040] figure 1 It is a schematic flow chart of a LoRa-based data transmission method according to a specific embodiment of the present invention, such as figure 1As shown, a LoRa-based data transmission method includes: S11, performing cycl...

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Abstract

The invention provides data sending and receiving methods based on LoRa. The sending method comprises the steps of performing CRC coding on original data to acquire a first sequence, wherein the length of the first sequence is a first parameter; if a current channel is polarized to a second parameter of sub-channels, selecting the first parameter of sub-channels with the maximum channel capacity from each sub-channel to serve as information bit transmission channels and recording numbers, wherein the second parameter is a polarization length; based on each number, placing each piece of bit information in the first sequence to a corresponding bit of the second sequence to form a third sequence, wherein the length of the second sequence is the second parameter, and each piece of bit information is 0; performing linear conversion on the third sequence to acquire a fourth sequence; deleting the corresponding bit in the fourth sequence according to the serial number of the bit to be deletedto form a fifth sequence; and modulating and then transmitting the fifth sequence via a LoRa module. According to the method provided by the invention, the anti-interference capacity of LoRa channeltransmission is enhanced, and the transmission reliability of the LoRa Internet of Things is improved.

Description

technical field [0001] The invention relates to the technical field of the Internet of Things, in particular to a method for sending and receiving data based on LoRa. Background technique [0002] With the continuous development and application of science and technology, the Internet of Things technology has begun to enter and affect human production and life activities. Especially in recent years, with the increasing demand for smart experience, more and more fragmented terminal devices need to be connected to the network to realize interconnection. Show your talents in various application scenarios. [0003] Networking technology is very important in the application of the Internet of Things, which solves the network interconnection and communication of each terminal device. LoRa technology is a low-power wide-area network communication technology that has emerged in recent years. Compared with previous LAN wireless technologies such as WiFi, ZigBee, and Bluetooth, as we...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0057H04L1/0061
Inventor 王有政陈伊滢冯小溪赵少骅齐廷宇
Owner TSINGHUA UNIV
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