Enhanced the Quality of Telemedicine Real-Time Video Transmission and Distortion Minimization in Wireless Network

2020 ◽  
Author(s):  
Ajay Ghimire ◽  
Abeer Alsadoon ◽  
P.W.C. Prasad ◽  
Nabil Giweli ◽  
Oday D. Jerew ◽  
...  
Keyword(s):  
Real Time ◽  
Wireless Network ◽  
Video Transmission ◽  
Distortion Minimization

Study on Adaptive QoS Solution of Real-Time Video Stream in Wireless Network

2012 ◽  
Vol 532-533 ◽  
pp. 1124-1129
Author(s):  
Xiao Yun Xiong ◽  
Bing Wang ◽  
De Xing Wang
Keyword(s):  
Wireless Networks ◽  
Real Time ◽  
Wireless Network ◽  
Video Transmission ◽  
Rapid Development ◽  
Video Stream ◽  
Link State ◽  
Multiple Qos ◽  
Adaptive Qos

With the rapid development of wireless network technology, wireless networks have been widely used in many fields due to the flexibility of wireless access. However, in the field of video transmission, because the link state is instability and the transmission is easily interfered in wireless networks, the quality of video transmission is affected badly. In fading and shadowing channels, some users can’t watch the video normally. This paper provides an adaptive QoS solution of real-time video stream in wireless network, by adding a relay server it can provide multicast or unicast video stream satisfying multiple QoS for users with different network state. This solution has been successfully applied in Qingdao Public safety emergency video surveillance system.

A Real Time Video Transmission Routing Protocol in Multi-Interface Multi-Channel Ad Hoc Based on Queue Length and Delay Contraint

2012 ◽  
Vol 241-244 ◽  
pp. 2354-2361
Author(s):  
Ling Song ◽  
Tao Shen Li ◽  
Yan Chen
Keyword(s):  
Real Time ◽  
Routing Protocol ◽  
Video Transmission ◽  
Ad Hoc ◽  
Signal To Noise Ratio ◽  
Link Quality ◽  
Channel Switching ◽  
Quality Metric ◽  
Switching Algorithm

Real-time video transmission demands tremendous bandwidth, throughput and strict delay. For transmitting real-time video in the multi-interface multi-channel Ad hoc, firstly, we applied multi-interface multi-channel extension methods to the AOMDV (Ad-hoc On-demand Multipath Distance Vector) routing protocol, and improved extant channel switching algorithm, called MIMC-AOMDV (Multi-Interface Multi-Channel AOMDV) routing protocol. Secondly, we proposed video streaming delay QoS(Quality of Service) constraint and link-quality metrics, which used the multi interface queue’s total used length to get QMMIMC-AOMDV (Quality metric MIMC -AOMDV) routing protocol. The simulations show that the proposed QMMIMC-AOMDV can reduce the frame delay effectively and raise frame decodable rate and peak signal to noise ratio (PSNR), it is more suitable for real-time video streams.

scholarly journals Improving the Quality of Video Transmission in a Wireless Network by Using a Hybrid Packet Loss Correction Algorithm

2018 ◽  
Vol 16 (3) ◽  
pp. 78
Author(s):  
M M Emelianova ◽  
V N Emelianov ◽  
A V Abilov
Keyword(s):  
Wireless Network ◽  
Packet Loss ◽  
Video Transmission ◽  
Correction Algorithm

Существуют различные способы передачи видеоданных режима реального времени. Один из наиболее успешных и экономически эффективных вариантов - это одноранговые сети, реализуемые программно в приложениях. Но у данного решения есть и недостатки, заключающиеся в возможном ухудшении качества передачи из-за отключения узлов-передатчиков, плохих каналов связи и ошибок в работе отдельных устройств. Чтобы видеопоток доставлялся до получателей без ошибок и потерь, применяются различные механизмы повышения помехоустойчивости, такие как избыточное кодирование (FEC), повторная передача (ARQ) и кодирование с множественным описанием (MDC), у каждого из которых есть свои недостатки. В статье приводится описание разработанного гибридного алгоритма коррекции потерь пакетов. Подробно описывается его реализация в приложении для серверного и клиентского устройств. Для оценки эффективности разработанного гибридного алгоритма проведен ряд экспериментов. Полученные при различных начальных условиях результаты значений коэффициента потерь пакетов гибридного алгоритма коррекции потерь сравниваются с результатами для алгоритма ARQ при аналогичных условиях.

scholarly journals Improving the Quality of Left-Behind Children’s Participation in Sports through Wireless Network Monitoring

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Jinjin Zhao
Keyword(s):  
Real Time ◽  
Wireless Network ◽  
Video Streaming ◽  
Urban Areas ◽  
Network Monitoring ◽  
Sports Participation ◽  
Image Distortion ◽  
Long Distance ◽  
Left Behind

Urbanization is the process that people shift from rural to urban areas, which has led to large numbers of left-behind children in China. The left-behind children stay in rural regions of China while their parents work in urban areas. The left-behind children have few opportunities to participate in sports due to the lacking of concern, and it is not of high quality even though they participate in sports. Therefore, it is necessary to improve the quality of left-behind children's sports participation through wireless network monitoring. Wireless network monitoring transmits high-definition (HD) video streaming in real time to facilitate feedback timely. This paper studies the two-dimensional (2D) integer discrete cosine transform (DCT) and analyzes the reason for image distortion, then an improved DCT coefficient quantization approach is proposed for long-distance real-time transmission of HD video streaming, and a noise processing with a zero-mean noise processing is added in optimized approach to solve the image distortion problem. The experimental results show that the proposed improved approach has a good performance in reducing the blocking artifacts, and within the image reconstruction, the proposed approach improves the subjective video quality.

scholarly journals QoS Aware Video Transmission in Wireless Network: Successful and Failure Existing Technique

2020 ◽  
Vol 8 (5) ◽  
pp. 516-523
Keyword(s):  
Quality Of Service ◽  
Wireless Network ◽  
Routing Protocols ◽  
Video Transmission ◽  
Daily Life ◽  
Research Work ◽  
Effective Bandwidth ◽  
Face To Face ◽  
Novel Approach

Wireless technology has become one of the integral part of our daily life, it is the 21st century technology, emergency of wireless network have led the multimedia distribution very effectively. Moreover the video has been an eminent media for communications as well as for the entertainment purpose for past several decades. Due to improvisation in technologies people can communicate over face to face over the wireless network without any concern about the distance, hence the video transmission over the wireless network has become one of the interesting application in daily life. Moreover, it is very important to maintain good QoS (Quality of Service) such as effective bandwidth, routing protocols and other QoS parameters. In this paper, we have surveyed the extensive amount of research paper to understand the Quality of service, meanwhile we have extensively discussed the various existing methodology, which has helped in improvising the wireless network for video transmission. Moreover the main aim of this research work is to survey and address all the requirement along with challenges that occurs while designing the wireless network, also this survey unveils the recent development in optimization, algorithm, novel approach and the protocols for improvising the Quality of Service

Autonomous framework simulation tools for real-time multimedia streaming over wireless ad-hoc networks

SIMULATION ◽  
2019 ◽  
Vol 96 (2) ◽  
pp. 185-197
Author(s):  
Adel A Ahmed ◽  
Omar Barukab
Keyword(s):  
Real Time ◽  
Wireless Network ◽  
Multimedia Streaming ◽  
Transport Layer ◽  
Simulation Tool ◽  
Simulation Tools ◽  
Streaming Applications ◽  
Network Technologies ◽  
Transport Layer Protocols

Real-time video communication has become one of the most significant applications extensively used by homogeneous/heterogeneous wireless network technologies, such as Wi-Fi, the Internet of things, the wireless sensor network (WSN), 5G, etc. This leads to enhanced deployment of multimedia streaming applications over wireless network technologies. In order to accomplish the optimal performance of real-time multimedia streaming applications over the homogeneous/heterogeneous wireless network, it is therefore necessary to develop a simulation tool-set that effectively measures the quality of service (QoS) for different multimedia streaming applications over transport layer protocols. This paper proposes an autonomous simulation tool (AST) that is entirely independent from the source code of transport layer protocols. Furthermore, the AST is integrated into NS-2 to evaluate the QoS of real-time video streaming over numerous transport layer protocols and it uses new QoS measurement tools to test the video delivery quality based on I-frames to speeds up the assessment of multimedia streaming quality and ensure high accuracy of performance metrics. The simulation results show that using the AST to simulate real-time multimedia stream results in between 13% and 36% higher delivery ratio and 150–250% less cumulative jitter delay compared with using baseline simulation tools. Also, the AST guarantees an optimal QoS performance measurements in terms of the peak signal-to-noise Ratio and visual quality of the received video.

Communication Performance Research for Online Video over Wireless Multimedia Network

2013 ◽  
Vol 760-762 ◽  
pp. 643-646
Author(s):  
Yue Bin Wang ◽  
Li Qiang Liu ◽  
Quan Feng Yan
Keyword(s):  
Wireless Network ◽  
Video Transmission ◽  
Limited Resources ◽  
Online Video ◽  
Wireless Multimedia ◽  
Communication Performance ◽  
Loss Probabilities ◽  
Transmission Quality ◽  
Performance Research

This paper analyzed the communication performance to implement video coding and transmission in the limited resources of wireless network. Meanwhile, the effect of GOP, quantification and loss probabilities to transmission quality in multimedia communication is discussed, and the correlation between those relevant parameters and transmission quality of multimedia video is analyzed by simulation. The simulation results show that the transmission quality of multimedia video in wireless network varies with the compression parameters, network parameters, and network conditions. Thus, video transmission over wireless network, it should consider the network conditions, as well as appropriate length of the GOP and quantification parameters for better reconstructed images.

Toward Distributed QoS Driven Wireless Messaging Infrastructure

2012 ◽  
pp. 377-391
Author(s):  
Souheil Khaddaj ◽  
Bippin Makoond
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Video Transmission ◽  
Voice Over Ip ◽  
The Internet ◽  
Banking Services ◽  
Quality Aspects ◽  
Mobile Accessibility ◽  
Mobile Market

The Telecoms market is demanding more services which involve an increased mobile accessibility to the Internet, real time video transmission, real time games, Voice over IP (VOIP), and business critical transactions such as billing transactions and banking services. Meeting these challenges requires the mobile operators to change the way they design their telephony and messaging systems. As the mobile market moves to become more service centric, rather than technology centric, Quality of Service (QoS) has grown to become imperative, since in the Telecoms innovative services are very often short lived, where the quality aspects of a system and the provided services contribute as key differentiators. Thus, the main focus of this chapter is based around the QoS issues which have led to the consideration of a distributed messaging model to address the challenges faced in the Telecoms industry.

scholarly journals Dynamic and adaptive multi-path routing algorithm based on software-defined network

2018 ◽  
Vol 14 (10) ◽  
pp. 155014771880568 ◽  
Author(s):  
Wu Jiawei ◽  
Qiao Xiuquan ◽  
Nan Guoshun
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Video Transmission ◽  
Service Providers ◽  
Routing Algorithm ◽  
Global Network ◽  
Software Defined Network ◽  
Network State ◽  
Computational Overhead

Recently, there has been a surge of the video services over the Internet. However, service providers still have difficulties in providing high-quality video streaming due to the problem of scheduling efficiency and the wide fluctuations of end-to-end delays in the existing multi-path algorithms. To solve these two problems affecting video transmission quality, networks are expected to have the capability of dynamically managing the network nodes for satisfying quality-of-service requirements, which is a challenging issue for media streaming applications. Against this changing network landscape, this article proposes a dynamic and adaptive multi-path routing algorithm under three constraints (packet loss, time delay, and bandwidth) that are based on software-defined network for centralized routing computations and real-time network state updating in multimedia applications. Compared with related multi-path routing proposals, dynamic and adaptive multi-path routing makes efficient use of the latest global network state information achieved by the OpenFlow controller and calculates the optimal routes dynamically according to the real-time status information of the link. Moreover, our proposed algorithm can significantly reduce the computational overhead of the controller while completing a fine-grained flow balance. Experimental results show that dynamic and adaptive multi-path routing significantly outperforms other existing scheduling approaches in achieving a 35%–70% improvement in quality-of-service.

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