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The increasing use of complex multimedia services requires advanced resource management mechanisms, in particular in wireless network environments. Since multimedia services may contain several media flows, the number and properties of which may vary during an ongoing session, and because user preferences regarding flow importance may also vary, we use “user” and “service” related knowledge at session...
With high scalability, high video streaming quality, and low bandwidth requirement, peer-to-peer (P2P) streaming systems are gradually replacing their server-client-based counterparts in the realm of delivering multimedia content over the internet. However, current P2P streaming systems are suffering from “free-riding” due to the peers' selfish nature. In this paper, we propose a credit-based incentive...
In the "Youtube Era", mobile consumption of video, such as Video on Demand (VoD) and User Generated Content (UGC), has been steadily increasing. However, mobile networks are showing to be unprepared for such phenomenal traffic volume, whereas the devices' multiple interfaces are being exploited to address this problem. As such, the interest in offloading techniques has significantly increased,...
Multimedia traffic is expected to be widespread in next generation wireless networks, which will be likely based on Orthogonal Frequency Division Multiple Access. While multimedia content is heavily demanding in terms of network resources, it is also inherently adaptable at the application layer, thereby imposing soft QoS constraints, rather than strict requirements on a specific data rate. In this...
This paper presents the usage of Content Centric Networking (CCN) for adaptive multimedia streaming in mobile environments, leveraging the recent ISO/IEC MPEG Dynamic Adaptive Streaming over HTTP (DASH) standard. The performance of DASH over CCN is evaluated using real-world mobile bandwidth traces and compared to previous evaluations of different DASH-based as well as proprietary systems. As there...
The Peer-to-Peer Epi-Transport Protocol (PPETP) [1] is a peer-to-peer protocol designed for multimedia data distribution between end users. While its robustness and flexibility are attractive properties for multimedia cloud services, its lack of routing poses an issue if distant or specific nodes must be reached to, for example, provide service, or cloud interoperability. This paper describes an extension...
In a multimedia context, QoS (Quality of Service) is a measure of success. It represents the guarantee of successfully delivering packets, without delaying or dropping any, therefore, the guarantee of providing high quality experience for end-users. Depending on the content being delivered, there exist various parameters which need to be considered when designing QoS architectures, such as latency,...
The consumer electronic devices become more popular, especially in the multimedia home environment. This paper presents a real-time scalable streaming system in home environment. The system is designed with a bandwidth adaptive control. In the implementation system, the server provides smooth SVC streaming for users with heterogeneous network environment. To again bandwidth fluctuation, the frame...
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,...
Mobile video services are becoming a dominant traffic category in emerging fourth generation (4G) cellular networks such as the 3GPP Long-Term Evolution (LTE) and LTE-Advanced (LTE-A). In particular, mobile video broadcasting services such as 3GPP evolved Multimedia Multicast/Broadcast Service (eMBMS) will require considerable resources for high-quality video service delivery with high coverage probability...
DASH is new ISO/IEC MPEG and 3GPP standard for HTTP multimedia streaming that begins to be widely accepted in the industry. DASH is design to be flexible and support various multimedia formats. DASH unify the proprietary adaptive streaming solutions and suggests differing between them by using different behavioral approaches, each one best suited for the specific streaming application. Each behavior...
With the strongly growing popularity of mobile devices like smartphones and tablet computers, the number of end-systems with more than one network access — like UMTS/LTE and WLAN — is also increasing. This so-called multi-homing also leads to the desire of utilising multiple network paths simultaneously, in order to improve application payload throughput. Clearly, this so-called multi-path transfer...
Multimedia Content Delivery Networks (CDN) is used to improve the performance and reliability on Internet. In CDN architecture, the multimedia contents are replicated from the origin server to replica servers in order to improve the performance and minimize the use of network bandwidth. Efficient placing the multimedia contents in CDN is a challenging problem. There are five factors that can be used...
In this paper we present some contemporary examples of research-oriented as well as commercial content delivery networks (CDN)s. We discuss how both types of CDNs complement each other in tackling the posed technical and commercial challenges. We also show which performance metrics such as quality of experience (QoE) and time to first byte (TTFB) best capture the dynamics of traffic and services in...
The increasing number of cellular users and the demand for broadband mobile communications (3rd and 4th generation) raises the problem of bandwidth availability and the associated channel allocation strategies. Moreover, Quality of Service (QoS) is the challenge for such modern wireless multimedia telecommunications. This paper presents new algorithms for efficient bandwidth management of GSM cellular...
Investigations into the usage of Ethernet in automobiles is in progress in academia, the car industry and companies producing automotive electronic devices. The interest in Ethernet is motivated by the high bandwidth and scalability provided. It is a well experienced technology with support for the Internet Protocol (IP) suite. Ethernet as in-car network is expected to breakthrough in Advanced Driver...
Most of the multimedia applications use the User Datagram Protocol (UDP) as a transport layer protocol because it is suitable for the delivery of multimedia data over the Internet. However, the use of UDP could endanger the stability of the network because there is no congestion control applied. To a certain extent, the network can collapse if too many applications deliberately use this protocol....
TFRC (TCP-friendly Rate Control) is designed to mainly provide optimal service for unicast applications such as multimedia streaming in the best-effort Internet environment. TFRC smoothly changes transmission rate while competing fairly with TCP by using an equation on the modeling of TCP Reno to adjust the transmission rate. However, TFRC inherits RTT-unfairness problem of TCP Reno which severely...
Due to the recent development of video streaming delivery, hybrid broadcasting environments have attracted great attention. Some methods to reduce interruption time on hybrid broadcasting environments have been proposed. However, the delivery servers with these methods broadcast data according to the predetermined static broadcast schedules. In this paper, we propose a video streaming delivery method...
With the increasingly efficient streaming of multimedia standard and the computational resources in the coarse grained reconfigurable architecture (CGRA), how to provide high data throughput for the CGRA for multimedia application in real time becomes a bottleneck challenge. In this paper, a data reuse method is proposed based on the pre-parsing mechanism of MB information in advance. The pre-parsed...
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