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In this paper, we investigate an energy efficient transmission scheme for video streaming in buffer-aided relay networks. In order to minimize the average energy consumption, we propose an energy-efficient transmission algorithm (EETA), which selects either the source relay (S — R) or the relay user (R — U) link for transmission depending on the instantaneous channel state information as well as the...
This decade has been marked with tremendous growth of video streaming which has been known as “bandwidth killer service”. Unmanaged services or Over-the-top (OTT) services now become more and more popular in the entertainment industry. However, it is easy to realize that those services' providers do not guarantee a stable video quality for users because they cannot control the underlying network condition...
Peer organization is one of the most important issues in peer-to-peer (P2P) video streaming systems. Free-riding extremely reduces the overall performance of these systems. The peers placed closer to the video source will have a higher quality of service. Therefore, we can mitigate the free-riding effect and encourage peers to increase uploading participation by putting peers with more upload bandwidth...
In current Internet, most of the traffic dedicated to video streaming applications. In recent years, Peer-to-Peer (P2P) streaming approach has gained more attention, due to the high cost of providing the required bandwidth for a large number of users in Client-Server model. Mesh-based peer-to-peer video streaming is a robust approach which recently employed in many multimedia networking applications...
This paper aims to improve the QoS of IEEE802.11e standard. It is intelligently performed by adjusting the contention parameters of the MAC layer based on desired priorities of the nodes. We focus on CW and AIFS that are used for calculating the back-off time to have traffic priority in accessing the channel in EDCA part of IEEE802.11e standard. The proposed scheme is called SN-EDCA (Smart Node-EDCA)...
Multimedia traffic is characterized by its sensitivity to both network delay and packet losses. In high-load non-dedicated networks, Quality of Service (QoS) must be guaranteed to multimedia traffic to achieve a minimum acceptable quality. This paper presents QoSApp, an OpenFlow-based application that dynamically manages the network-bandwidth to provide QoS guarantees to multimedia traffic, while...
In P2P video streaming systems, the neighbor selection algorithm is one of the fundamental components that affects performance. Although a few neighbor selection methodologies have been proposed, none of them takes into consideration QoE metrics reported by peers as a parameter for decisions. In this work, we present a new metric that quantifies the QoE as a function of the number of absences of pieces...
Internet service providers (ISP) are deploying software defined networking (SDN), which enables them to better utilize their resources and increase their revenues by offering on-demand differentiated services. In particular, SDN makes provisioning of dynamically managed video services with multiple levels of service viable, since the controller has complete vision of network resources and can change...
In this paper, we introduce a new video-streaming framework that is based on a novel packet design in conjunction with low-complexity active queue management within the network. Our proposed framework, which we call Erasable Packets within Internet Queues (EPIQ), exploits the inherent multi-priority nature of video to deliver optimal quality-of-experience to users, yet without requiring any additional...
To alleviate the spectrum scarcity problem in the licensed cellular networks (LCNs), we introduce a new paradigm called cognitive multihoming (CM), where a cognitive radio (CR)-enabled base station transmits to the users simultaneously over the licensed cellular bands and primary user bands in CR networks (CRNs). The CR aspect incurs lower cost, however, at the expense of higher energy consumption...
As the main goal of network media service transmission, to meet and enhance the quality of experience (QoE) for users, and optimize transmission control mechanism. High-definition (HD) streaming media technology demands larger bandwidth. While QoE evaluation needs to consider multiple paths network transmission quality of service (QoS), path payload distribution, service features and other attributes...
HTTP adaptive streaming (HAS) technology has been widely implemented in entertainment industries. It allows users to smoothly access representations of content when the network work conditions frequently fluctuate. This mechanism not only improves the perceived quality of user but also benefits the network resource utilization. However, the frequent adaption of bit rate may cause the instability of...
Internet video is currently one of the most popular Internet services, accounting for more than 50% of the overall Internet traffic. Various access patterns of users worldwide contribute to increasing complex scenarios of Internet video. Under the circumstances, there emerges a valuable yet challenging topic that industry and academia keep focusing on: how to evaluate quality of experience (QoE) of...
Research about multimedia streaming in cognitive radio network has become a hot issue recently. In order to enhance the throughput of real-time multimedia streaming and maximize the utility, we proposes a dynamic spectrum allocation strategy based on Qos-layering and auction theory (QLAS). In this strategy, we classify the secondary users according to the feature of data stream, and choose the optimal...
We propose a method to determine appropriate quality of service (QoS) dynamically required by users for video streaming services in this paper. In the proposed method, the QoS parameters for the video streaming are determined based on the machine learning algorithm, by using a regression analysis in particular, according to the user requirements, computational/network resources and service provisioning...
Multimedia applications such as video streaming have posed challenges over the wireless networks. A selective mapping approach was proposed in this paper to address the quality of delay-sensitive video transmitted over 802.11e EDCA wireless LAN. This cross-layer design takes into account the importance of packets and end-to-end delay requirements. Packets of high importance will be assigned to virtual...
In this paper, we describe an Over-The-Top (OTT) video Quality of Experience (QoE) subjective evaluation experiment that was carried out to examine variations in the way subjects assess viewing experiences. The experiment focuses on different level of impairment and failure types, using 5-point measurement scales. Clustering is used to differentiate between unreliable and reliable participants, where...
Massive multi-input-multi-output (MIMO) networks could achieve higher data transmission rate benefited from the advantages of space diversity and multiplexing. In recent years, large amounts of research about different service adopted in massive MIMO network have been proposed. In this paper, we investigate instant video communication services requested by users in massive MIMO networks. After defining...
In this paper, we introduce a new Active Queue Management (AQM) paradigm and a corresponding congestion control mechanism for a novel video-streaming framework. We call the proposed framework Erasable Packets within Internet Queues (EPIQ). EPIQ exhibits best-effort complexity within the network, similar to the networking complexity of HTTP-based Adaptive Streaming (HAS); yet EPIQ can provide optimal...
Link adaptation algorithms employed by wireless routers traditionally use retransmission to achieve high error-free data throughput. Such methods do not take into account the delay sensitive nature of video data. In this paper, we investigate the use of reduced-reference video quality monitoring for video oriented link adaptation. Estimation of the quality degradation due to channel errors is performed...
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