scholarly journals A QoE Evaluation Method for RT-HDMV Based on Multipath Relay Service

Symmetry ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1127
Author(s):  
Yuzhuo Zhan ◽  
Weimin Lei ◽  
Yunchong Guan
Keyword(s):  
Real Time ◽  
Video Transmission ◽  
Evaluation Method ◽  
Communication Process ◽  
High Definition ◽  
Network Resources ◽  
The Stability ◽  
Single Path ◽  
Multiple Transmission

Multipath diversity leads to a possible higher performance for real-time high definition video, especially for medical video transmission, which would improve the stability of multiple transmission paths in the symmetrical state, and avoid the potential losses of imaging information in the communication process. Most of the previous works are always based on the single-path end-to-end transmission, although the service had been demonstrated that it is unable to meet the rigorous demand for the RT-HDMV. In the paper, a multipath relay service based on the QoE (quality of experience) evaluation method is proposed for the RT-HDMV (real-time high definition medical video). The method eliminates several of the limitations in the existing methods for some conventional single-path transmission. It can fully utilize the finite network resources and transmission bandwidth to meet the users’ demands of the RT-HDMV to get a better score of the QoE. We use a four-stage framework to evaluate the QoE, which consists of constructing the multipath relay transmission for the RT-HDMV, calculating the weights of diversified QoS parameters in the multipath, designing the load distribution strategy by the mapping between the QoS (quality of service) and QoE, and redefining the rule of the QoE evaluation. Many experiments show that the proposed design scheme achieves weighting of the transmission sub-paths and computes the QoE score. Compared with the state-of-art methods in the single path transmission scene, our framework mainly gains the excellent performance for the RT-HDMV.

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 Crowdsourcing Framework for QoE-Aware SD-WAN

2021 ◽  
Vol 13 (8) ◽  
pp. 209
Author(s):  
Ibtihal Ellawindy ◽  
Shahram Shah Heydari
Keyword(s):  
Service Quality ◽  
Real Time ◽  
Quality Of Experience ◽  
Network Resources ◽  
Application Performance ◽  
Network Parameters ◽  
Subjective Assessments ◽  
Interactive Nature ◽  
Direct Feedback

Quality of experience (QoE) is an important measure of users’ satisfaction regarding their network-based services, and it is widely employed today to provide a real assessment of the service quality as perceived by the end users. QoE measures can be used to improve application performance, as well as to optimize network resources and reallocate them as needed when the service quality degrades. While quantitative QoE assessments based on network parameters may provide insights into users’ experience, subjective assessments through direct feedback from the users have also gathered interest recently due to their accuracy and interactive nature. In this paper, we propose a framework that can be used to collect real-time QoE feedback through crowdsourcing and forward it to network controllers to enhance streaming routes. We analyze how QoE can be affected by different network conditions, and how different streaming protocols compare against each other when the network parameters change dynamically. We also compare the real-time user feedback to predefined network changes to measure if participants will be able to identify all degradation events, as well as to examine which combination of degradation events are noticeable to the participants. Our aim is to demonstrate that real-time QoE feedback can enhance cloud-based services and can adjust service quality on the basis of real-time, active participants’ interactions.

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.

IoT-Enabled Non-Contact-Based Infrared Thermometer for Temperature Recording of a Person

2021 ◽  
pp. 195-203
Author(s):  
Swapna B.
Keyword(s):  
Real Time ◽  
Web Application ◽  
Temperature Data ◽  
Monitoring Systems ◽  
Laboratory Environment ◽  
Environment Temperature ◽  
History Of ◽  
The Stability ◽  
Indoor Conditions

Laboratories are essential facilities provided in professional institutes for scientific and technological work. The lab must ensure their accuracy to regulatory requirements and maintain their data records so that the laboratory environment can be monitored properly. The laboratory environment temperature (LET) is monitored to ensure proper regulation and maintenance of indoor conditions and also to correlate the collected samples with these conditions. The LET data collection must be stored to influence the quality of the results and to ensure the stability of the laboratory environment. Hence, an IoT solution is presented to supervise real-time temperature and is known as iRT. This method helps to monitor ambient object supervision in real time. It is composed of a hardware prototype to collect the temperature data and to use web application to provide the history of temperature evolution. The result gained from the study is promising, and it provides a significant contribution to IoT-based temperature monitoring systems.

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.

Development and Application of Real-Time Quality Monitoring System of Hot Mixed Asphalt Mixture

2013 ◽  
Vol 321-324 ◽  
pp. 1863-1866
Author(s):  
Wei Feng Zhou ◽  
Wen Bin Xie
Keyword(s):  
Quality Control ◽  
Real Time ◽  
Monitoring System ◽  
Asphalt Pavement ◽  
Asphalt Mixture ◽  
Quality Monitoring ◽  
Pavement Performance ◽  
The Stability ◽  
Hot Mixed Asphalt

As the stability of quality of hot mixed asphalt mixture (including gradation, asphalt aggregate ratio, temperature, etc) is the premise of good pavement performance of asphalt pavement, it is regarded the key of ensuring service life and pavement performance of road to ensure the quality of hot mixed asphalt mixture. This research is oriented at developing real-time quality control & monitoring system of asphalt mixture further on the basis of the established quality control system of mixing plant. The functions and operating principles of the system are introduced in this article.

Ultra-High-Definition Video Transmission for Mission-Critical Communication Systems Applications

2017 ◽  
pp. 115-131
Author(s):  
Anthony Olufemi Tesimi Adeyemi-Ejeye ◽  
Geza Koczian ◽  
Mohammed Abdulrahman Alreshoodi ◽  
Michael C. Parker ◽  
Stuart D. Walker
Keyword(s):  
Video Processing ◽  
Communication Systems ◽  
Video Transmission ◽  
Perceptual Quality ◽  
Future Research ◽  
High Definition ◽  
High Definition Video ◽  
Main Challenge ◽  
Mission Critical

With the standardization of ultra-high-definition formats and their increasing adoption within the multimedia industry, it has become vital to investigate how such a resolution could impact the quality of experience with respect to mission-critical communication systems. While this standardization enables improved perceptual quality of video content, how it can be used in mission-critical communications remains a challenge, with the main challenge being processing. This chapter discusses the challenges and potential solutions for the deployment of ultra-high-definition video transmission for mission-critical applications. In addition, it examines the state-of-the-art solutions for video processing and explores potential solutions. Finally, the authors predict future research directions in this area.

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