scholarly journals QoS Analysis of Video Streaming in the UAV Networks with WiFi Standards

2021 ◽  
Vol 24 (4) ◽  
pp. 73-79
Author(s):  
Kirill Eduardovich Korepanov ◽  
Irina Alekseevna Kaisina ◽  
Roman Eduardovich Shibanov ◽  
Albert Vinerovich Abilov ◽  
Mohammed Amin Lamri
Keyword(s):  
Data Transmission ◽  
Transmission Rate ◽  
Video Stream ◽  
Video Data ◽  
Network Simulator ◽  
Coding Schemes ◽  
Ground Station ◽  
Transmission Parameters ◽  
Aerial Vehicle

The paper presents the results of simulation of the process of video data transmission from an unmanned aerial vehicle (UAV) to a ground station using the IEEE 802.11 family standards (802.11n, 802.11ac and 802.11ax), with the ability to change modulation indices, coding schemes and data transfer rate in a network simulator NS-3. The aim of the work is to analyze the characteristics of the quality of video data transmission in the UAV network for various Wi-Fi standards, which allows determining the most suitable standard for the transmission of video data in the UAV network, depending on the distances between nodes and the required frequency band. A scenario is considered in which an unmanned aerial vehicle (UAV) hovering in the air was transmitting a video stream to a ground station, while the distance between nodes increased, and the transmission rate was maintained at the same level close to the transmission rate of the real video stream. The simulation was carried out in several stages for a more detailed study of the dependence of the packet loss of the transmitted data on the change in modulation indices, coding schemes and other parameters. Based on the simulation results, the characteristics of the video data transmission quality were obtained as a relation between the Packet delivery rate (PDR) and distance between nodes for different transmission parameters for each considered standard of the IEEE 802.11 family. Based on the results obtained, conclusions were drawn about the influence of transmission parameters on the quality of service characteristics. The study was carried out in an open-source network simulator NS-3, which implements build-in libraries that are necessary for high-quality simulation of data streaming transmission and allows you to set a wide range of parameters to obtain realistic results. The results of the work may be of interest to UAV manufacturers when planning missions in which the choice of Wi-Fi standard used as a channel for transmitting video data is crucial.

МЕТОД ГЛУБОКОГО ОБУЧЕНИЯ С ПОДКРЕПЛЕНИЕМ ДЛЯ СИСТЕМ ИНТЕРНЕТА ВЕЩЕЙ НА БАЗЕ ТЕХНОЛОГИИ LORA С ОГРАНИЧЕННЫМИ РЕСУРСАМИ И ПОДДЕРЖКОЙ QoS

2021 ◽  
Author(s):  
 M.S. MUTHANNA ◽  
A.S. MUTHANNA ◽  
 A.S. BORODIN
Keyword(s):  
Data Transmission ◽  
Environmental Parameters ◽  
Code Rate ◽  
Frame Structure ◽  
Signal Quality ◽  
High Quality ◽  
Spreading Factor ◽  
Transmission Parameters ◽  
Factor Code

Achieving high Quality of Service (QoS) remains a challenge for LoRa technology. However, high QoS can be achieved via optimizing the transmission policy parameters such as bandwidth and code rate. Existing approaches do not provide an opportunity to optimize the LoRa networks' data transmission parameters. The article proposes transmission policy enforcementfor QoS-aware LoRanetworks.The QoSparameter ranking is implemented for IoT nodes where priority and nonpriority information is identified by the new field of LoRa frame structure(QRank).The optimaltransmissionpolicyenforcement uses fast deep reinforcement learning that utilizes the environmental parameters including QRank, signal quality, and signal-to-interference-plus-noise-ratio. The transmission policy is optimized for spreading factor, code rate, bandwidth, and carrier frequency. Performance evaluation is implemented using an NS3.26 LoRaWAN module. The performance is examined for various metrics such as delay and throughput. Достижение высокого качества обслуживания (QoS) по-прежнему остается достаточно сложной задачей для технологии LoRa. В принципе высокий уровень QoS может быть достигнут за счет оптимизации параметров передачи, например, пропускной способности и скорости передачи информации в сети. Известные на сегодняшний день решения не дают возможности оптимизировать параметры передачи данных для сетей LoRa. В статье предложен эффективный метод передачи данных, обеспечивающий требования по QoS при использовании технологии LoRa. Ранжирование параметров QoS для узлов интернета вещей определяется новым полем структуры фрейма LoRa (QRank) для приоритетной и неприоритетной информации. Для обеспечения эффективной передачи применяется быстрое глубокое обучение с подкреплением, для которого используются как параметры качества обслуживания, так и отношение сигнал/шум. Метод передачи оптимизирован с учетом коэффициента распространения, скорости передачи данных, полосы пропускания и несущей частоты. Оценка производительности при применении предложенного метода проведена с использованием модуля LoRaWAN в пакете имитационного моделирования NS3.26. Производительность оценивается на основе параметров задержки и пропускной способности.

scholarly journals Modeling Goodput for Data Transmission in FANET

2020 ◽  
Vol 6 (1) ◽  
pp. 100-108
Author(s):  
I. Kaisina
Keyword(s):  
Mathematical Model ◽  
Unmanned Aerial Vehicles ◽  
Transfer Process ◽  
Data Transmission ◽  
Data Transfer ◽  
Network Simulator ◽  
Data Traffic ◽  
Stream Data ◽  
Ground Station ◽  
Aerial Vehicles

This paper investigates the process of multi-stream data transmission from several unmanned aerial vehicles (UAV) to a ground station. We can observe a mathematical model of the data transfer process at the application level of the OSI model (from flying nodes to a ground station). The Poisson – Pareto packet process is used to describe the multi-stream data traffic. The results of simulation are obtained using the network simulator NS-3. It is considered a system for emulating the process of multi-stream data transmission from UAV to a ground station. Acording to the results of studies for multi-stream data transmission it is clear that the increase of the UAV source nodes which simultaneously transmit data to a ground station needs higher requirements for Goodput.

scholarly journals Adaptive Coding in Control of Two Satellites Relative Motion Over the Packet Erasure Communication Channel

2020 ◽  
Author(s):  
Boris Andrievsky ◽  
Alexander Fradkov ◽  
Elena Kudryashova
Keyword(s):  
Data Transmission ◽  
Data Exchange ◽  
Communication Channel ◽  
Transmission Rate ◽  
Control Law ◽  
Data Transmission Rate ◽  
High Data ◽  
Navigation Data ◽  
Binary Coding

The paper is focused on the navigation data exchange between two satellites moved in a swarm. The feedback control law is designed ensuring regulation of the relative satellites motion. The adaptive binary coding/decoding procedure for data transmission over the limited capacity communication channel is proposed and studied for the cases of ideal and erasure channel. Dependence of the regulation time on the data transmission rate is numerically found. The results obtained provides dependence of the required load of the communication channel on the desired quality of the stabilization process. It is demonstrated that for significantly high data transmission rate erasure of data in the channel with probability up to 0.3 does not make an effect on the regulation time.

scholarly journals Smart Home using Visual Sensor Network and Li-Fi Technology

2019 ◽  
Vol 8 (4) ◽  
pp. 4791-4796
Keyword(s):  
Sensor Network ◽  
Data Transmission ◽  
Smart Home ◽  
High Speed ◽  
Transmission Rate ◽  
Human Life ◽  
Visual Sensor ◽  
Visual Sensor Network ◽  
The Internet Of Things

One of the most interest gaining and intellectual applications of the Internet of Things (IOT) is Smart Home. It enhances the quality of human life and brings more comfortability, convenience and savings. In this paper, an intellectual home procedural system is proposed which is based on Li-Fi technology as medium of communication between the connected devices. It uses wireless visual sensor network as video surveillance system. Li-Fi is a bi-directional high speed connected technology that supports sharing (sending and receiving) of data by illuminating the usage of LED bulbs. The usage of such innovation gives a surety of a higher level of security, higher data transmission rate, less consumption of energy and more convenience.

scholarly journals Application of Diversity Combining with RLS Adaptive Filtering in Data Transmission in a Hydroacoustic Channel

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7255
Author(s):  
Agnieszka Czapiewska ◽  
Andrzej Luksza ◽  
Ryszard Studanski ◽  
Andrzej Zak
Keyword(s):  
Least Squares ◽  
Adaptive Filtering ◽  
Data Transmission ◽  
Intersymbol Interference ◽  
Multipath Propagation ◽  
Recursive Least Squares ◽  
Diversity Combining ◽  
Quality Of Data ◽  
Transmission Parameters

When transmitting data in a hydroacoustic channel under difficult propagation conditions, one of the problems is intersymbol interference (ISI) caused mainly by the effect of multipath propagation. This phenomenon leads to a decrease in transmission parameters, and sometimes completely prevents it. Therefore, we have made an attempt to use diversity combining with Recursive Least Squares (RLS) adaptive filtering to improve the quality of data transmission in a hydroacoustic channel with strong reflections. The method was tested in simulation and during measurements in a real environment. The influence of the method on data transmission in the hydroacoustic channel was examined in detail. The obtained results allow us to draw conclusions regarding the purposefulness of use of diversity combining and RLS adaptive filtering in order to improve the quality of data transmission by reducing the effect of ISI.

scholarly journals Reduction of the Multipath Propagation Effect in a Hydroacoustic Channel Using Filtration in Cepstrum

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 751 ◽  
Author(s):  
Agnieszka Czapiewska ◽  
Andrzej Luksza ◽  
Ryszard Studanski ◽  
Andrzej Zak
Keyword(s):  
Data Transmission ◽  
Multipath Propagation ◽  
Propagation Effect ◽  
Quality Of Data ◽  
Multipath Effect ◽  
Channel One ◽  
Real Environment ◽  
Transmission Parameters ◽  
Cepstral Analysis

During data transmission in a hydroacoustic channel, one of the problems is the multipath propagation effect, which leads to a decrease in the transmission parameters and sometimes completely prevents it. Therefore, we have attempted to develop a method, which is based on a recorded hydroacoustic signal, that allows us to recreate the original (generated) signal by eliminating the multipath effect. In our method, we use cepstral analysis to eliminate replicas of the generated signal. The method has been tested in simulation and during measurements in a real environment. Additionally, the influence of the method on data transmission in the hydroacoustic channel was tested. The obtained results confirmed the usefulness of the application of the developed method and improved the quality of data transmission by reducing the multipath propagation effect.

scholarly journals IMPROVEMENT OF METHODS OF MOTION COMPENSATION OF DYNAMIC OBJECTS MOVING IN VIDEO STREAM OF THE VIDEOCONFERENCING SYSTEM

2018 ◽  
Vol 8 (4) ◽  
pp. 48-51
Author(s):  
Volodymyr Barannik ◽  
Mykola Dvorsky ◽  
Valeriy Barannik ◽  
Viktoria Himenko ◽  
Anton Sorokun
Keyword(s):  
Quality Control ◽  
Motion Compensation ◽  
Information Exchange ◽  
Video Stream ◽  
Video Data ◽  
Video Information ◽  
Objective Control ◽  
Operational Activities ◽  
Videoconferencing System

Videoconferencing gives us the opportunity to work and communicate in real time, as well as to use collective applications, interactive information exchange. Videoconferencing systems are one of the basic components of the organization of manegment, ensuring, the timeliness and necessary quality management of the implementation of objective control over the solution of the tasks. The quality of the image and the time of transmission of video information is unsatisfactory for the quality control of the troops. Considered ways to increase the efficiency of management and operational activities, due to methods of compensation of motion, using technology to reduce the volume of video data for quality improvement.

scholarly journals METHOD OF EFFICIENT REPRESENTATION AND PROTECTION OF DYNAMIC OBJECTS IN VIDEO POTOTICS BASED ON THE TECHNOLOGY OF THEIR ROCKUM COMPENSATION

2018 ◽  
pp. 90-97
Author(s):  
Volodymyr V. Barannik ◽  
Mykola V. Dvorsky ◽  
Valeriy V. Barannik ◽  
Anton D. Sorokun
Keyword(s):  
Video Streaming ◽  
Motion Compensation ◽  
Processing Time ◽  
Video Stream ◽  
Video Data ◽  
Frame Rate ◽  
Video Information ◽  
Operational Activities ◽  
The One

Recently, special attention at implementation of the necessary level of information security is given to wireless technologies. Their use contributes to the growing demand for video information services. This is accompanied by an increase in the intensity of video streams and an increase in the processing time of video information, resulting in them far beyond the bandwidth of networks. Consequently, there is a contradiction that is caused: on the one hand, the growth of requirements for the quality of video information; on the other hand, difficulties in providing services of the given quality using wireless technologies.The article deals with issues related to the speed of the video stream of video information, depending on the quality of video data required, from spatial resolution and frame rate. The article concludes that with the trend of increasing the amount of video information in the complexes of the Hellenic Republic - it is necessary to improve the coding methods. In order to increase the efficiency of management and operational activities, it is proposed to improve the existing methods of encoding dynamic video streaming object with algorithms for motion compensation for video conferencing in the system of troop control. As a result, the article proposes a six-point algorithm for search, which can increase the efficiency and reduce the processing time of video information between subscribers. This approach, in the future, by improving the existing methods for encoding dynamic video streaming objects with algorithms of motion compensation, will improve the efficiency of using videoconferencing, for example, in the control system of troops.

Adaptive Transmission Control Based on QoE Measurement of Invalid Data Rate

2014 ◽  
Vol 513-517 ◽  
pp. 2063-2067
Author(s):  
Lin Guang Lai ◽  
Lei Xu ◽  
Chang Sheng Cao
Keyword(s):  
Packet Loss ◽  
Data Transmission ◽  
Loss Rate ◽  
Code Rate ◽  
Adaptive Transmission ◽  
Data Rate ◽  
Video Data ◽  
Transmission Control ◽  
Rate Experiment

In the real-time network video surveillance system which uses UDP for data transmission, the packet loss and delay of H.264 video data unit would cause image pause and blur. The paused and blurry image affects the quality of users’ experience. In this paper, we put forward Idr (invalid data rate) to integrate the delay and packet loss rate and chooses code rate as the target of adjustment. We propose an adaptive transmission approach based on QoE Measurement of invalid data rate. Experiment result shows that, this approach can improve the video fluency and clarity as well as user experience.

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