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Due to the fact that video streaming is the current "killer" application and for competitiveness, telecommunication service providers need to be able to answer a fundamental question: to which extent is the available network infrastructure able to successfully provide users with a satisfactory experience when running video streaming applications? Answering this question is far from trivial...
In this paper, we present a novel idea of multipath multicast, which is imperative to bandwidth intensive applications, in the context of multimedia streaming. In addition to congestion control, multipath TCP (MPTCP) has been proposed to establish multiple paths in a network to improve network reliability. Application-layer multicast (ALM) has been proposed to leverage end systems instead of dedicated...
Dynamic adaptive streaming over HTTP (DASH) is gaining popularity for video streaming over the Internet. DASH uses a rate adaptation algorithm to adapt the bitrate played continuously based on the network conditions. Most of the algorithms use buffer occupancy, throughput, or a combination thereof to adapt the bitrate. In the literature, the Quality of Experience (QoE) of users is measured objectively...
Since the early days of Quality of Experience (QoE) research, relationships to Quality of Service (QoS) and corresponding QoE-QoS models have been of great interest to the research community. However, the manifold quality transformations throughout the communication stack, together with accessibility issues of QoS parameters inside networks, hamper availability, applicability and generality of such...
This paper proposes a novel priority-aware packet fragmentation extension to high throughput WLANs such as IEEE 802.11n for streaming of H264/AVC encoded videos. Unlike existing fragmentation schemes, the proposed scheme fragments IP packets based on the priority of video packets and the characteristics of MPEG-2 TS, where the original IP packet is fragmented into smaller IP packets containing fewer...
With Netflix and YouTube accounting for more than 50% of North American, fixed network peak download traffic in 2015, video streaming is a significant source of Internet traffic. Dynamic Adaptive Streaming over HTTP (DASH) is a recent standard for live and on-demand video streaming services, where clients adapt their behaviour on-the-fly to match regularly updated estimates of network capacity. Consumer...
The paper describes a generic Cloud Roboticsteleoperation system which allows to control in real-time arobot (connected with a 4G network) having its video streamas feedback. The proposed system relies on the Azure CloudPlatform and on recent web technologies. Particularly, wepresent an use case experiment in which an operator in Slovakiacontrols a robot situated in Italy in order to evaluate its...
MPEG has released a standard of the DASH(Dynamic Adaptive Streaming over HTTP) specification to support QoS(Quality of Service) for multimedia streaming service. Several quality adaptation schemes have been proposed for improving the quality of DASH. However, previous adaptation schemes do not guarantee smooth and seamless playback because they do not considers the VBR characteristics of the contents...
High-speed onboard networks for the space industry with a lot of tasks that could be solved only by transmitting large data streams in a short time, with minimum overheads and accepted latencies. Particular tasks for data transmission require various types of traffic and onboard network topologies. Video data in many applications generate high throughput real-time data streams, from most demanding...
Video conferences over the Internet with multiple participants have to be wirelessly connected to improve the communication efficiency. However, video conferences are often held in places suffering from crowded wireless medium, such as offices and schools. This leads to many challenges on providing high video conferencing experience. In this paper, we study the problem of video streaming over crowded...
This work motivates and details the concept of QoE-aware sustainable throughput in the area of video streaming. Sustainable throughput serves as a mean to compare video streaming solutions in terms of Quality of Experience (QoE) and energy efficiency (EE). It builds upon the QoE Provisioning-Delivery Hysteresis (PDH) and denotes the maximal throughput at which QoE deteriorations can be kept below...
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...
This paper presents an analysis performance of running multimedia applications on IPv4 compared to IPv6. As acknowledged, today's network faces anexhaustion of IPv4 addresses by Internet Assigned Numbers Authority (IANA) due to larger users need internet communication. Thus, migration from IPv4 to IPv6 is the main reason where some applications should be tested on its running performance on IPv6....
In this paper, we study an adaptation method for mobile streaming over HTTP/2. Beside leveraging the server push feature of HTTP/2 to reduce request-related overheads, the proposed method can improve video quality by delivering gradual video bitrate transitions. Experimental results show that our method can provide smooth video quality while resulting in a low number of requests over a whole session.
To stream video using HTTP, a client device sequentiallyrequests and receives chunks of the video file fromthe server over a TCP connection. It is well-known that TCPperforms poorly in networks with high latency and packet losssuch as wireless networks. On mobile devices, in particular, usinga single TCP connection for video streaming is not efficient, andthus, the user may not receive the highest...
QoS guarantees for real-time HD video transmission can be assured by proper resource allocation. The TFD option of the IP protocol can be used to convey signaling information about required resources for a given transmission. In this paper the new traffic description for TFD option, based on analysis of scene changes, is presented. The traffic description was carried out in two stages. First, scene...
Adaptive video streaming techniques were introduced to enable high quality video delivery over HTTP. These schemes propose to choose dynamically the appropriate video rate to match the operating conditions. In home networks, wireless access is the predominant Internet access. Multiple clients/players with different link qualities compete over a limited wireless bandwidth to transfer their video streams...
HTTP-based adaptive streaming is today's predominating video delivery model over Internet. However, state-of-the-art bitrate adaptation algorithms are not suitable for low-latency adaptive video streaming due to a distinct lack of buffer dynamic stabilization at the client. A small buffer size lacks resilience to the buffer fluctuation imposed by the mismatch between the network throughput and the...
Multi-hop relaying has been considered as a key technology for future wireless communication networks to overcome coverage and capacity problems in 5th generation mobile networks (5G). Recently, there has been increasing interest from 3GPP operators to integrate multi-hop relaying functionalities into LTE-A standards. However, many issues remain to be resolved due to the complexity of the multi-hop...
Wireless multimedia traffic has increased considerably in recent years, which puts forward higher demand on the capacity of existing network. Multicast, as a transmission strategy with high spectral efficiency, has not been widely studied in heterogeneous cellular network (HetNet). Meanwhile, in order to overcome the shortcoming of conventional multicast scheme (CMS) that the throughput of multicast...
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