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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...
The international research community has been working for the last decade on designing solutions for the QoS in Internet. There has been a dramatic increase in the processing power of workstations and bandwidth of high speed networks. This has given rise to new real-time applications such as multimedia. These applications have traffic characteristics and performance requirements that are quite different...
According to deep analysis on the usability of COPS protocol in the solution to network QoS, the paper puts forward an argument which is based upon call control server in Softswitch system, then give a simulation by using the scheme. Via analyzing the simulation results, it proves that the scheme could improve network transmission quality effectively, and make a better use of network bandwidth.
Signaling flow transmission is of the most importance in the discussion of the Quality of Service (QoS) problem of the Next Generation Network (NGN). For implementing service reachability, the signaling flow of the NGN services should be transmitted reliably and with the highest priority. Because the signaling flows and the media flows of the NGN service are mixed while being transmitted, the present...
DiffServ is assumed as a scalable solution for service differentiation in the Internet. It applies differentiated behaviors on data packets for different quality levels on a per hop basis (PHB). However, it does not have any control on the traffic entering the network and the paths which are traversed by data packets. Therefore, if no complementary mechanism is used with DiffServ, the end-to-end service...
DiffServ is assumed as a scalable solution for service differentiation in the internet. It applies differentiated behaviors on data packets for different quality levels on aper hop basis (PHB). However, it does not have any control on the traffic entering the network and the paths which are traversed by data packets. Therefore, if no complementary mechanism is used with DiffServ, the end-to-end service...
The Global Information Grid (GIG) must provide Quality of Service (QoS) for multiple service classes across several, separately managed IP networks. DiffServ and admission control are used to support QoS needs for a set of real time and elastic services.
The SVC (scalable video coding) extension to the recent video compression standard H.264/MPEG-4 AVC paves the way for video congestion control, by allowing flexible on-the-fly adjustments of the sending rate. We study the interaction between TFRC (TCP-friendly rate control) and application level rate control, and observe that TFRC requires relatively large router buffers to keep packet loss on acceptable...
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