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Method and device for adjusting spreading factor in wide area internet of things

A wide-area Internet of Things and spreading factor technology, which is applied in the field of spreading factor adjustment in the wide-area Internet of Things, can solve the problems of terminal battery life reduction and service delay increase

Active Publication Date: 2019-12-03
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of data transmission, the spreading factor is fixed to the initially set value, which may increase the service delay and reduce the battery life of the terminal due to the unreasonable value of the spreading factor

Method used

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  • Method and device for adjusting spreading factor in wide area internet of things
  • Method and device for adjusting spreading factor in wide area internet of things
  • Method and device for adjusting spreading factor in wide area internet of things

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Embodiment Construction

[0024] Embodiments of the present invention provide a method and device for adjusting a spreading factor in a wide-area Internet of Things, which are mainly applied to a wide-area Internet of Things using LoRa technology. Exemplary, such as figure 1 As shown, the network architecture of the Wide Area Internet of Things includes a server 101 , a gateway 102 and a terminal 103 .

[0025] Wherein, the gateway 102 connects the terminal 103 and the server 101 , the gateway 102 and the server 101 are connected through the TCP / IP network protocol, and the terminal 103 and the gateway 102 communicate bidirectionally. The server 101 is responsible for storing and processing data, determining the value of the spreading factor, and sending it to the gateway 102 . The gateway 102 is responsible for data aggregation, receives the value information of the spreading factor sent by the server 101 , and sends it to the terminal 103 . The terminal 103 is responsible for receiving data. Consid...

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Abstract

The invention discloses a method and device for adjusting a spreading factor in a wide area Internet of Things, and relates to the technical field of Internet of Things communications for dynamicallyadjusting the spreading factor according to the current network environment, thereby reducing service delay and increasing service life of terminal batteries. The method comprises the following steps:setting the value of the spreading factor to a first preset initial value before transmitting the service; before transmitting the ith service, acquiring a signal-to-noise ratio SNR of the i-1th service and a SNR of the i-2th service reported by the terminal, and the current value of the spreading factor; determining the value of the spreading factor in the ith service according to the differencebetween the SNR of the i-1th service and the SNR of the i-2th service, and the current value of the spreading factor, wherein the value of i is an integer greater than or equal to 2; and sending thevalue of the spreading factor in the ith service to the terminal and the gateway to enable the terminal and the gateway to adjust the current value of the spreading factor to the value of the spreading factor in the ith service.

Description

technical field [0001] The present application relates to the technical field of Internet of Things communication, and in particular to a method and device for adjusting a spreading factor in a wide-area Internet of Things. Background technique [0002] With the rapid development of Internet of Things technology, the requirements for long-distance and low power consumption are getting higher and higher, and low power wide area network (LPWAN) technology has emerged as the times require. In the application process of LPWAN technology, three main parameters need to be considered: transmission rate, working frequency band and network topology. The commonly used technologies are LoRa technology based on spread spectrum technology for ultra-long-distance wireless transmission, Sigfox and narrowband internet of things (narrow band internet of things). things, NB-IoT) technology. [0003] LoRa technology transmits small-capacity data through a wide range of radio spectrum by using...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/69
CPCH04B1/69
Inventor 邢宇龙贾雪琴史可程奥林胡云
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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