Results 31 to 40 of about 119,117 (157)

Measurement based threat aware drone base station deployment [PDF]

TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES, 2020
Unmanned aerial vehicles are gaining importance with many civilian and military applications. Especially the surveillance, search/rescue, and military operations may have to be carried out in extremely constrained environments. In such scenarios, drone base stations (DBSs) have to provide communication services to the people at the ground.
Alper AKARSU, Tolga GİRİCİ
openaire   +2 more sources

Age Structure and Spatial Distribution Pattern of Rubber Tapping Labor Force in Hainan Island

Redai dili
Currently, tapping is the only method of obtaining natural rubber, an essential industrial raw material. The stability of the labor force supply for tapping is crucial for the sustainable development of the natural rubber industry.
Wang Guizhen, Chen Bangqian, Lai Hongyan, Wang Xinchen, Gao Yuanfeng, Wu Zhixiang   +5 more
doaj   +1 more source

LoRaWAN Base Station Improvement for Better Coverage and Capacity

Journal of Low Power Electronics and Applications, 2021
Low Power Wide Area Network (LPWAN) technologies provide long-range and low power consumption for many battery-powered devices used in Internet of Things (IoT). One of the most utilized LPWAN technologies is LoRaWAN (Long Range WAN) with over 700 million
Filip Turčinović, Gordan Šišul, Marko Bosiljevac   +2 more
doaj   +1 more source

Investigation of taxonomic shrub resources in Qiqihar and analysis of their economic potentiality

Xibei zhiwu xuebao
[Objective] The study aims to find out the shrub resource situation and its economic potentiality in Qiqihar, and provide basis for the development and utilization of shrub resources in this area.
CUI Lin, ZHANG Qiang, WANG Ligang, ZHANG Yuzhu, HAN Qin, JIANG Xiancui   +5 more
doaj   +1 more source

A TOF and TDOA underground joint positioning method based on UWB

Meikuang Anquan
The existing precise positioning system for mining personnel mainly adopts UWB positioning technology. The positioning method that only applies TOF requires joint ranging and orientation based on two positioning sub stations or antennas, which has ...
Xian CHEN
doaj   +1 more source

Green Base Station Assignment for NOMA-Enabled HCNs

IEEE Access, 2019
In this paper, for the heterogeneous cellular networks (HCNs) with non-orthogonal multiple access (NOMA), we mainly concentrate on the design of green base station (BS) assignment integrating with power allocation.
Tianqing Zhou, Junhui Zhao, Dong Qin, Xuan Li, Chunguo Li, Luxi Yang   +5 more
doaj   +1 more source

Wideband Asymmetric Coplanar Strip Fed Antennas With Pattern Diversity for mmWave 5G Base Stations

IEEE Access, 2020
A compact asymmetric coplanar strip (ACS)-fed mmWave 5G antenna with 6.5-7.5 dBi end-fire gain is presented in this paper. The proposed antenna is wideband, operating from 26-32 GHz with fractional bandwidth of 20.7%.
M. Idrees Magray, G. S. Karthikeya, Khalid Muzaffar, Shiban Kishen Koul, Ayaz Hassan Moon   +4 more
doaj   +1 more source

Aerial BS location optimization for monitoring multiple forest areas with uplink UAV throughput requirements

EURASIP Journal on Wireless Communications and Networking
The increasing frequency and intensity of forest fires demand innovative technologies to support firefighting and mitigate their impact on ecosystems and communities. This paper explores the application of untethered and tethered uncrewed aerial vehicles
Pravallika Katragunta, Konstantin Mikhaylov, Michel Barbeau, Joaquin Garcia-Alfaro, Evangelos Kranakis, Tuomo Hanninen   +5 more
doaj   +1 more source

IoT Based Weather Station

, 2020
An atmosphere station can be depicted as an instrument or device, which outfits us with the information of the atmosphere in our neighbouring condition. Hereafter, this contraption on a very basic level resources the temperature, pressure, dampness. There are various types of sensors present in the model, using which all the recently referenced limits ...
Kashyap Panchal, Bhavin Kothari, Dipen Mav, Chaughule, Archana, Rathod, Santosh   +4 more
openaire   +1 more source

Exploring power system flexibility regulation potential based on multi‐base‐station cooperation self‐optimising sleep strategy for 5G base stations

IET Energy Systems Integration
5G base stations (BSs) are potential flexible resources for power systems due to their dynamic adjustable power consumption. However, the ever‐increasing energy consumption of 5G BSs places great pressure on electricity costs, and existing energy‐saving ...
Xiaoyan Ma, Yunfei Mu, Hongjie Jia, Ming Li, Yu Long, Qifeng Huang, Xinyang Jiang   +6 more
doaj   +1 more source