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This paper offers a comparative analysis of quality of service (QoS) of the queuing disciplines Priority Queuing (PQ), Custom Queuing (CQ), Weighted Fair Queuing (WFQ), Class-Based Weighted Fair Queuing (CBWFQ) and Low-Latency Queuing (LLQ), with self-similar and long-range dependent traffic, through experimental measurements with routers. We take into account two different classes of traffic: real-time...
As the Quality of Experience of video streaming can be greatly affected by parameters such as jitter, throughput, packet loss and delay, it is of great importance to assess the consequences low Quality of Service. Video artifacts are errors that can be displayed when multimedia streaming faces transmission difficulties. Blocking, ringing, motion compensation mismatch or false borders are some of the...
MCU-ru is a popular video conference system, improved from Multipoint Control Unit (MCU) open source. Users can send their video streams to MCU server and the system compresses all received video streams into one mixed multiple-view stream and sends back to all users. This method allows users with modest Internet bandwidth to video conference. Although the system works well in many countries, the...
In Recent times, real time applications are increasing gradually which have specific Quality of Service (QoS) requirements. IEEE 802.11e is aimed to provide such QoS. 802.11e uses traffics differentiation among flows using a parameter set. The flows are admitted using their priority. The voice and video flows are admitted in most of the times due to their higher priority. This causes the increase...
Nowadays Vehicular Ad hoc Networks is one of the most promising application areas of the wireless networks, able to organize without predefined infrastructure. In particular, the transmission of video data in the ad-hoc represents a major issue due to the immense enrichment by the video information of the quality of experience perceived by the user and knowledge of the environment in many applications...
The IP Multimedia Subsystem (IMS) enables the convergence of voice, data, and multimedia services. IMS is well integrated with existing voice and data networks, while adopting many of their key characteristics. SIP (Session Initiation Protocol) provides a pathway to build a single unified network, bridging the gap that previously existed between the once-separated Telecom and Internet networks. The...
Future generation of heterogeneous wireless network is expected to provide multimedia, multi class applications any time anywhere with required degree of Quality of Service (QoS). However, every application has different QoS requirement in terms of acceptable packet loss, jitter, delay, throughput etc. Therefore, in such environment providing guaranteed end to end QoS along with seamless mobility...
Since complex network environment makes the video data with network resources change quickly, video transmission must possess the ability to adapt to the change of network status. After studying the video stream congestion question as well as the network adaptive transmission control and the transmission characteristic of RTP (Real-time Transport Protocol) RTCP (Real-time Transport Control Protocol),...
Nowadays, world is on going to “Convergence Era”, where data, voice, and video overcome to pass through same network, like IP network. Unfortunately, the fast growth of application technology has not been supported yet by default IP network in the case of quality of service. We have known, that voice over IP services have sensitivity to delay, jitter and latency. And it require of different bandwidth...
Providing guaranteed services in the Internet has become extremely essential to fulfill the requirements of the Internet users. With an increase in the number of users and demand for multimedia applications like video streaming, VoIP and video conferencing, larger bandwidth requirement increases drastically since such applications are very sensitive to delay, packet loss, and jitter. In such an environment,...
Today, One of the most important performance measures in the new burst traffic gets to 3G and 4G systems is the End-to-End jitter. However, in order to study and analyze Jitter, many works and models have been devoted to estimate and evaluate this parameter. In this paper, analytical formulas for jitter of interrupted Poisson traffic (IPP) and MMPP-2 are presented. We provide Jitter approximation...
In a heterogeneous environment of 4G broadband networks, participating technologies orchestrate their own provisioning for the Quality of Service (QoS) management. As we move towards 5G, those technologies are moving towards a common set of objectives to offer the end users higher capacity, robustness, security, QoS, etc. in a unified and converged manner. In order to provide end-to-end QoS support...
In this paper, the performance of quality of services for an IEEE 802.16 based WiMAX access network is analyzed. WiMAX is an emerging broadband wireless communication standard used as a mode of transmission and high speed internet access. WiMAX is a technology which provides more bandwidth, better QoS, better security, greater coverage and has low infrastructure cost. The quality of service related...
Quality of Service (QoS) is imperative for multimedia real-time applications to ensure optimal use of the communication channels and deliver Video Conference (VC) with acceptable quality. Several algorithms have been proposed in the literature to optimize the use of the bandwidth when both VC and Internet browsing are operating at the same time. In this paper we apply three of these methods, Guaranteed...
Mobile users today can choose among different competing network operators offers, influenced in their choice by perceived and experienced quality, during the fruition of the service. The network operators must be able to react on quality issues, before the user perceives them. In order to do this, it is essential to establish a link between Quality of Experience (QoE) and Quality of Service (QoS)...
Quality of Service (QoS) is an important network performance parameter having significant impact on real time applications like VoIP, Interactive gaming and Video Streaming. Although IPv6 was designed to improve addressing, security and QoS in IPv4, services like Video Conferencing and VoIP with strong reliance and sensitivity towards delay and jitter pose a daunting challenge in today's packet based...
The long term evolution (LTE) technology supports end-to-end Quality of Service (QoS). QoS-supported systems assess QoS performance of different traffic flows and then allocate resources to balance QoS among these flows. For assessing delay performance, there are two effective capacity-based estimators: the conventional Effective Capacity (EC) estimator and the discrete-time EC estimator. In this...
Finding the correlation among Quality of Experience (QoE) for video, measured Quality of Service (QoS) parameters in the network, and objective video performance metrics is a challenging task. This paper provides some analysis results on this issue. Our motivation is that streaming media content gets dominant position in the global traffic mix within the next few years. With the evolution of personal...
Video transmission based on Android platform is introduced in the paper, and an adaptive video transmission congestion control methods is proposed. Bit rate and frame rate will changed based on the feedback information which included bit error ratio and delay jitter automatically. The traditional control method has been improved, and the jitter will reduce due to the method. Double buffering is used...
Wireless multimedia Quality of Experience (QoE) is not only a matter of Quality of Service (QoS). Network-based metrics such as delay, jitter and packet loss are critical indicators for multimedia service; but not well enough without considering the intelligent terminal-related metrics. This paper present a new QoE Evaluation Model which integrates application, network and terminal layers factors...
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