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
CN109361422BActive Publication Date: 2019-12-03CHINA UNITED NETWORK COMM GRP CO LTD
3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA UNITED NETWORK COMM GRP CO LTD
Publication Date
2019-12-03

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More