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LoRaWAN Internet of things frequency hopping method

An Internet of Things and frequency hopping technology, applied in the field of Internet of Things, can solve problems such as electromagnetic interference, difficult to guarantee transmission failure, etc., and achieve the effect of smooth network

Active Publication Date: 2017-09-29
国动物联网有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since LoRa is a wireless broadcasting solution, broadcasting in a limited frequency band is difficult to ensure that there will be no conflicts leading to transmission failure; there are electromagnetic interferences in the actual operating environment, and it is necessary to flexibly change the frequency to avoid these interferences

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples.

[0016] A LoRaWAN Internet of Things frequency hopping method, comprising the following steps:

[0017] Step 1. Start the 470-510MHz channel from 470.3MHz to 509.9MHz. Among them, the 470.3MHz channel number is 0, and the 509.9MHz channel number is 198. There is one channel for every 200K, and 20 of the 200 channels are agreed as default channels;

[0018] A numbering scheme is shown in Table 1:

[0019] Table 1

[0020] number range

Frequency range (MHz)

default channel

0-7

470.3-471.7

470.3

10-17

472.3-473.7

472.3

20-27

474.3-475.7

474.3

30-37

476.3-477.7

476.3

40-47

478.3-479.7

478.3

50-57

480.3-481.7

480.3

60-67

482.3-483.7

482.3

70-77

484.3-485.7

484.3

...

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PUM

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Abstract

The invention discloses a LoRaWAN Internet of things frequency hopping method. A 470-510 MHz channel starts from 470.3 MHz to 509.9 MHz. A serial number of a 470.3 MHz channel is 0. The serial number of a 509.9 MHz channel is 198. One channel is arranged every other 200 K. 20 channels in the 200 channels are appointed as default channels. A working frequency of a base station is configured on a cloud platform. The channels of n serial numbers are configured for the base station in support of n channels. It should be noted that the n channels at least comprise one default channel. A gap of uplink and downlink frequencies is configured. When a module sends frequency hopping and network search instructions on the default channel, the channel information of the uploading base station is replied to the module. The module carries out corresponding adjustment and then joins a LoRaWAN to start working. According to the method, two systems: uplink and downlink same-frequency and different-frequency systems are compatible.

Description

technical field [0001] The invention belongs to the technical field of the Internet of Things and relates to a LoRaWAN adaptive rate adjustment (ADR) method. Background technique [0002] LoRa is a low-power IoT technology proposed by Semtech, which is widely used in wireless meter reading and other fields. LoRaWAN uses LoRa technology to build a low-power wireless interconnection wide area network. Since LoRa is a wireless broadcasting solution, broadcasting in a limited frequency band is difficult to ensure that there will be no conflicts leading to transmission failure; there are electromagnetic interferences in the actual operating environment, and it is necessary to flexibly change the frequency to avoid these interferences. In order to reduce conflicts, resist electromagnetic interference in the environment, and make full use of the frequency band, a frequency hopping scheme is needed to flexibly control the operating frequency. [0003] In order to reduce conflicts,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7136H04B1/715H04W16/10H04W48/16
CPCH04B1/7136H04B1/715H04W16/10H04W48/16
Inventor 谢玖实涂小朋顾庆欢
Owner 国动物联网有限公司