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Quality of Service (QoS) is imperative for multimedia real-time applications to ensure optimal use of the communication channels and deliver Video Conference (VC) with acceptable quality. Several algorithms have been proposed in the literature to optimize the use of the bandwidth when both VC and Internet browsing are operating at the same time. In this paper we apply three of these methods, Guaranteed...
Congestion control is vital in the streaming of a video sequence or clip, as network traffic varies unpredictably requiring constant adjustment of the transmission rate. Standard TCP-Friendly Rate Control (TFRC) wastes bandwidth and may react to congestion only when packet loss has already occurred. This paper presents a unicast transport protocol named RRB-SIMD for video streaming over the Internet,...
As part of the resource allocation mechanisms, each router must implement some queuing discipline that governs how packets are buffered while waiting to be transmitted. Various queuing disciplines can be used to control which packets get transmitted (bandwidth allocation) and which packets get dropped (buffer space). The queuing discipline also affects the latency experienced by a packet, by determining...
Today, as the Real-time Transport Protocol (RTP) is used more and more widely in the streaming media services such as real-time video in the internet. The algorithm of RTP adaptive transmission control is an important factor to guarantee the quality of video transmission services. So, much more attention should be paid to the research on the algorithm. In this paper, on the base of researching on...
In VoIP (Voice over Internet Protocol) applications, packet loss affects the received speech quality greatly. PCM (Pulse Code Modulation) coders are often used for VoIP and also face such problems. In this paper a side information based packet loss recovery algorithm is proposed, which introduces a small part of corrective information to provide an enhanced reconstruction of the lost packets. A virtual...
This contribution addresses the case when live packet-switched video is used to enrich circuit-switched speech calls in mobile telephony. Circuit-switched and packet-switched transmissions generally operate on completely different transmission paths resulting in different QoS in terms of delay and loss rates. In this case, video and audio data recorded at the same time are not multiplexed together...
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