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According to the Convergence of a vehicle and IT, In-Vehicle-Network (IVN) is complicated and the multimedia data is increased. Ethernet guarantees Quality of Service (Qos) of the existing Control Area Network (CAN) communication and has a high bandwidth. As a result, the Ethernet is recently developed a new standard. IEEE 802.1 Audio Video Bridging (AVB) supports to handle priority and queuing for...
Remote screen recording is a system that records whole actions on a remote computer screen, and displays the actions on a client computer screen at the same time. Traditionally, screen recording are streamed in a video format, which large data usually results in high CPU utilization and heavy network loading. Therefore, in order to reduce CPU utilization and network bandwidth loading, the screen recording...
Evolved Multimedia Broadcast Multicast Service (eMBMS) is used for efficient content delivery to multiple users in Long Term Evolution (LTE) networks. In most cases eMBMS allows to use radio resources more efficiently comparing to unicast content delivery. It will be shown in this paper how many users should receive the same content to activate broadcasting instead of unicast delivery.
Adaptive video delivery approaches perform video rate selection based on the streaming client's throughput estimate. In practice, the accuracy of the estimated throughput is limited due to feedback delay and the unawareness of the dynamics of the underlying HTTP/TCP transport layer. As a result, streaming applications employ large playback delays in the order of tens of seconds so as to maintain continuous...
Accurate, dynamic rate selection is considered a hard problem in stream switching video applications over Internet Protocol. Not only the feedback delay but also the unawareness about the dynamics of the underlying HTTP/TCP transport layer require streaming applications to implement huge receiver buffers in the order of tens of seconds so as to maintain continuous video rendering with acceptable quality...
This work addresses the implications of using the Time-Division Unbalanced Carrier Sense Multiple Access (TDuCSMA) coordination function to support triple-play services. Firstly, the theoretical background of TDuCSMA is reported, presenting its advantages and discussing its full compliance with the IEEE 802.11 standard. Secondly, a prototype of TDuCSMA is discussed in details. Then, a set of experiments...
The IEEE 802.1 Audio/Video Bridging (AVB) protocol successfully supports audio/video streaming over Ethernet networks and is also a promising candidate for industrial automation. However, several industrial automation applications feature requirements that cannot be fulfilled by the current AVB standard. The next generation of IEEE 802.1 standards, which will specifically target the requirements of...
For the real-time transmission of stream media, a novel synchronization control strategy is proposed in this paper. The strategy includes the layer-based flow control algorithm and the delay jitter compensating algorithm. In order to avoid the network congestion and ensure that the data transmission is not less than the frame bit-rate, the former adjusts the streaming media frame bit-rate and the...
The aim of Harmonic Broadcasting protocol is to reduce the bandwidth usage in video-on-demand service where a video is divided into some equal sized segments and every segment is repeatedly transmitted over a number of channels that follows harmonic series for channel bandwidth assignment. As the bandwidth of channels differs from each other and users can join at any time to these multicast channels,...
Avionics Full Duplex Ethernet (AFDX) is a well-established backbone network with wide usage in all current aircrafts, with its first usage onboard the Airbus A380. It was initially defined by Airbus and internationally standardized by ARINC (664 Part 7). The key features are 802.3 Ethernet compatibility, static routing based on a virtual link concept, reserved bandwidth with granted bandwidth allocation...
Small playback lag in live streaming is important for time-critical and interactive applications such as live stock, market updates, sports and remote education. In this paper, we present Elite addresses the playback lag problem in peer-assisted live streaming systems. Instead of deploying a large initial offset to all the users, Elite seeks the possibility of initializing users with layered proportional...
Nowadays, several live and on-demand streaming solutions use HTTP for signaling and data delivery. A frequently used technique is to chop a continuous stream into segments, encode these in multiple qualities and make these available for download using plain HTTP methods. This approach has become known as dynamic adaptive segment streaming over HTTP. Its advantage is that the deployed web infrastructure...
3D (or stereo) video has been a visually appealing and costly affordable technology. More sophisticated multi-view videos have also been demonstrated. Yet their remarkably increased data volume poses greater challenges to the conventional client/server streaming systems, which has already suffered from supporting 2D videos. The stringent multi-stream synchronization further complicate the system design...
Quality of Service (QoS) is an important, and admittedly overloaded, concept for emerging services based on the Real-Time Transport Protocol (RTP) to deliver multimedia content. In the context of the Internet Protocol Television (IPTV) services, the synchronization of multimedia components plays an important role. In order to synchronize audio and video components of multimedia content, RTP timestamps...
As the fast growth in the development of the related technologies, IEEE 802.11-based wireless mesh networks (WMNs) will be widely deployed as the access networks in community or campus environments. In this kind of WMNs, the playback of multicast streaming video (such as IPTV) could be discontinued due to the handoff process of the mobile stations. In this paper, practical system architecture for...
Tiled display environments present opportune workspaces for displaying multimedia content. Often times, displaying this kind of audio/visual information requires a substantial amount of network bandwidth. In this paper we present a method for distributing the decoding over the entire display environment, allowing for substantially less network overhead. This method also allows for interactive configuration...
Video broadcast applications have received significant interests from the mobile WiMAX standard in terms of capabilities and means of delivery multimedia services, by providing high bandwidth over long-range transmission. However, one of the main problems of IEEE 802.16 is that it covers multi BS with too many profiled layers, which can lead to potential interoperability problems. The multi BS mode...
In this paper, a multimedia-support e-learning platform called WebELS (Web-based e-learning system) for non-broadband users is introduced. The system includes three main modules: editor, player and manager. Both asynchronous and synchronous e-learning are supported on this platform. Moreover, some technologies are implemented to make the multimedia contents possible for users without wideband network...
Content delivery network (CDN) and peer-to-peer (P2P) are two well-known techniques for the efficient distribution of video streams. We have designed and implemented a large-scale live streaming system by integrating the advantages of CDN and P2P technologies to overcome their own limitations. The system was commercially deployed by ChinaCache, one of the largest CDN companies in China. To the best...
In order to ease the development and maintenance of more complex P2P applications, which combine multiple P2P functionality (e.g. streaming and dependable storage), we suggest to extend structured P2P systems with a dedicated information management layer. This layer is meant to generate statistics on the whole P2P system and to enable capacity-based peer search, which helps the individual functionality...
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