Results 61 to 70 of about 10,757 (229)

Design of temperature and humidity control system based on narrow band Internet of Things application architecture

open access: yesDianzi Jishu Yingyong, 2018
Narrowband Internet of Things(NB-IoT) is a new communication technology in the field of Internet of Things. It has the characteristics of low power consumption, large capacity, wide coverage and so on.
Yang Fan, Wang Yihuai, Song Hongru
doaj   +1 more source

Drilling Water Level Intelligent Monitoring System Based on Narrow-band Internet of Things

open access: yesMeikuang Anquan, 2020
An intelligent monitoring system for drilling water level based on Narrow-band Internet of Things is designed. The system controls the forward and reverse rotation of the DC motor through the intelligent telemeter, drives the capacitive water level ...
YAN Maoyin, XU Lenian, HUAN Zhihao
doaj   +1 more source

Complexity-Efficient Coherent Physical Cell Identity Detection Method for Cellular IoT Systems

open access: yesMathematics, 2022
Narrowband Internet of Things (NB-IoT) is one of the low-power wide-area network technologies that aim to support enormous connection, deep coverage, low power consumption, and low cost. Therefore, low cost of implementation and maintenance is one of the
Young-Hwan You   +3 more
doaj   +1 more source

On a Hybrid Preamble/Soft-Output Demapper Approach for Time Synchronization for IEEE 802.15.6 Narrowband WBAN [PDF]

open access: yes, 2015
In this paper, we present a maximum likelihood (ML) based time synchronization algorithm for Wireless Body Area Networks (WBAN). The proposed technique takes advantage of soft information retrieved from the soft demapper for the time delay estimation ...
Atallah, Leila Najjar   +4 more
core   +3 more sources

Foldable all-textile cavity-backed slot antennas for personal UWB localization [PDF]

open access: yes, 2020
An all-textile multimoded cavity-backed slot antenna has been designed and fabricated for body-worn impulse radio ultra-wideband (IR-UWB) operation in the 3,744-4,742.4 MHz frequency band, thereby covering Channels 2 and 3 of the IEEE 802.15.4a standard.
Lemey, Sam   +4 more
core   +1 more source

Designing an Ultra-Low-Power RTU for Use in NB-IoT Water Applications [PDF]

open access: yesMATEC Web of Conferences, 2019
This paper presents the design and realization of a ultra-low-power and low-cost remote transfer unit (RTU), working as an outdoor gateway for collecting hydrographic data, such as rainfall, water flow rate, water quality, etc.
Ganchev Ivan   +2 more
doaj   +1 more source

Prediction-Based Energy Saving Mechanism in 3GPP NB-IoT Networks [PDF]

open access: yes, 2017
The current expansion of the Internet of things (IoT) demands improved communication platforms that support a wide area with low energy consumption. The 3rd Generation Partnership Project introduced narrowband IoT (NB-IoT) as IoT communication solutions.
Lee, Jaiyong, Lee, Jinseong
core   +1 more source

Survey on wireless technology trade-offs for the industrial internet of things [PDF]

open access: yes, 2020
Aside from vast deployment cost reduction, Industrial Wireless Sensor and Actuator Networks (IWSAN) introduce a new level of industrial connectivity.
De Poorter, Eli   +3 more
core   +1 more source

Research on the NB-IoT Random Access in LEO Satellite IoT

open access: yes天地一体化信息网络, 2021
Narrowband internet of things (NB-IoT) technology is widely used in data communications for a large number of low-speed and low-power devices, but it is diff cult to provide services for remote areas that cannot be covered by terrestrial networks.With ...
Haodong LIU   +4 more
doaj   +2 more sources

Design and Implementation of a Framework for Smart Home Automation Based on Cellular IoT, MQTT, and Serverless Functions

open access: yesSensors, 2023
Smart objects and home automation tools are becoming increasingly popular, and the number of smart devices that each dedicated application has to manage is increasing accordingly.
Marco Esposito   +3 more
doaj   +1 more source

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