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.

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.

Efficient Streaming of Video Frames over Heterogeneous Wireless Network

2018 ◽  
Vol 7 (3.34) ◽  
pp. 226
Author(s):  
K Lavanya ◽  
Dr R.Kanthavel ◽  
Dr R.Dhaya
Keyword(s):  
Wireless Networks ◽  
Wireless Network ◽  
Packet Loss ◽  
Video Data ◽  
Transport Layer ◽  
Transmission Protocol ◽  
Heterogeneous Wireless Network ◽  
Heterogeneous Environment ◽  
Video Frames

Transferring high quality video stream through a heterogeneous wireless network has many challenges due to the varying data rate and round trip time(RTT) involved in the network and the more stringent quality of service(QoS) requirements of the multimedia application such as on time delivery , minimum delay etc. User datagram protocol (UDP), a connectionless, unreliable transport protocol has been widely used for transferring video frames.UDP cannot guarantee reliable information delivery and  may lead to packet loss. The packet loss, increases with time varying bandwidth availability in the heterogeneous wireless networks. Transmission control protocol(TCP) can be an alternate transport layer protocol to provide reliable delivery of video information. But, using TCP for wireless networks has limitations due to misinterpretation of packet loss, frequent link failure, asymmetric link behaviour etc.,. which minimizes the throughput and in turn degrades the quality of the video frames transmitted. This paper analyses an efficient scheme to use Heterogeneous Environment Retransmission algorithm with SCTP (HERTS) to transfer video data in the heterogeneous environment. By using multi-homing and multi-streaming feature of Stream control transmission protocol (SCTP), the packet delivery rate, through put and delay requirements can be optimized. The transport layer model suggested in this paper aims at reducing the occupancy of the retransmitted packets in the link, by using a separate end to end path allotted for retransmission.  

scholarly journals Comparative Analysis of Quality of Service Scheduling Classes in Mobile Ad-Hoc Networks

2021 ◽  
Author(s):  
Thulani Phakathi ◽  
Bukohwo Michael Esiefarienrhe ◽  
Francis Lugayizi
Keyword(s):  
Quality Of Service ◽  
Real Time ◽  
Ad Hoc ◽  
Hybrid Features ◽  
Streaming Applications ◽  
Unsolicited Grant Service ◽  
Mobile Ad Hoc ◽  
Hoc Networks ◽  
Traffic Optimization

Quality of Service (QoS) is now regarded as a requirement for all networks in managing resources like bandwidth and avoidance of network impairments like packet loss, jitter, and delay. Media transfer or streaming would be virtually impossible if QoS parameters were not used even if the streaming protocols were perfectly designed. QoS Scheduling classes help in network traffic optimization and the priority management of packets. This paper presents an analysis of QoS scheduling classes using video traffic in a MANET. The main objective was to identify a scheduling class that provides better QoS for video streaming. A simulation was conducted using NetSim and results were analyzed according to throughput, jitter, and delay. The overall results showed that extended real-time Polling Service (ertPS) outperformed the other classes. ertPS has hybrid features of both real-time Polling Service (rtPS) and Unsolicited Grant Service(UGS) hence the enhanced performance. It is recommended that ertPS scheduling class should be used in MANET where QoS consideration is utmost particularly in multimedia streaming applications.

A Simulation Tool for Real-Time Hybrid-Cooperative Positioning Algorithms

2012 ◽  
Vol 3 (3) ◽  
pp. 67-87 ◽  
Author(s):  
Francesco Sottile ◽  
Mauricio A. Caceres ◽  
Maurizio A. Spirito
Keyword(s):  
Computational Complexity ◽  
Real Time ◽  
Wireless Network ◽  
P2p Network ◽  
Simulation Tool ◽  
Positioning Accuracy ◽  
Cooperative Positioning ◽  
Pseudorange Noise ◽  
High Level ◽  
Improved Accuracy

The authors propose a simulation tool (ST) able to test real-time hybrid GNSS/terrestrial and cooperative positioning algorithms that fuse both pseudorange measurements from satellites and terrestrial range measurements based on radio frequency communication performed between nodes of a wireless network. In particular, the ST simulates devices belonging to a peer-to-peer (P2P) wireless network where peers, equipped also with a GNSS receiver, cooperate among them by exchanging aiding data in order to improve both positioning accuracy and availability. Furthermore, the authors propose a method to increase the robustness of cooperative algorithms based on the estimated position covariance matrix. In particular, the proposed approach assures a faster estimation convergence and improved accuracy while lowering computational complexity and network traffic. Finally, the authors tested the sensitivity of the implemented positioning algorithms through the ST in two different scenarios, first in presence of high level of pseudorange noise and then in presence of a malicious peer in the P2P network.

The Four Facets of Multimedia Streaming

2010 ◽  
pp. 59-68
Author(s):  
Florence Agboma ◽  
Antonio Liotta
Keyword(s):  
Quality Of Experience ◽  
Multimedia Streaming ◽  
Mobile Environments ◽  
Network Access ◽  
Network Support ◽  
Streaming Applications ◽  
Recent Advances ◽  
Streaming Services

Recent advances in media coding techniques and network access technologies have made multimedia streaming practicable and affordable in both fixed and mobile environments. Multimedia streaming services from anywhere and at anytime is fast becoming a reality. This chapter provides a snapshot of the facets involved in delivering multimedia streaming contents to the end user’s terminal. The facets discussed in the chapter extend from the streaming paradigms, media coding techniques, the network support for multimedia streaming services to the techniques used to evaluate the user’s quality of experience for multimedia streaming applications. Each facet is also discussed for both fixed and mobile environments.

An Enhanced Queue Management Scheme for Eradicating Congestion of TFRC over Wired Environment

2017 ◽  
Vol 7 (3) ◽  
pp. 1347 ◽  
Author(s):  
N. Ramanjaneya Reddy ◽  
Chenna Reddy Pakanati ◽  
M. Padmavathamma
Keyword(s):  
Real Time ◽  
Rate Control ◽  
Multimedia Streaming ◽  
Transport Layer ◽  
Queue Management ◽  
Control Mechanisms ◽  
Huge Amount ◽  
Management Algorithm ◽  
Management Scheme ◽  
Time Requirements

<p class="Abstract">To accomplish increasing real time requirements, user applications have to send different kinds of data with different speeds over the internet.  To effectuate the aims of the computer networks, several protocols have been added to TCP/IP protocol suite.  Transport layer has to implement emerging techniques to transfer huge amount of data like multimedia streaming. To transmit multimedia applications, one of the suitable congestion control mechanisms in transport layer is TCP Friendly Rate Control Protocol (TFRC).  It controls congestion based on its equation. To get more smoothed throughput, intermediate nodes (like Routers. etc.) have to use suitable procedures in all real time situations. To eradicate the level of congestion in the network, we introduce enhanced Holt-Winters equations to RED queue management algorithm and applied to TFRC. The simulation results have shown that this strategy reduces packet loss and increases throughput.</p>

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