Abstract
In this article, we concentrate on the architecture of an adaptive real time application that has the capability to transmit multimedia data over heterogeneous networks and adapt the transmission of the multimedia data to the network changes. Moreover in this article, we concentrate to the unicast transmission of multimedia data.
Key Terms in this Chapter
Quality of Service (QoS): Quality of service refers to the capability of a network to provide better service to selected network traffic.
Quantizer: Quantizer specifies the number of DCT coefficients that are encoded.
Packet Loss Rate: Packet loss rate is defined as the fraction of the total transmitted packets that did not arrive at the receiver.
RTP/RTCP: Protocol which is used for the transmission of multimedia data. The RTP performs the actual transmission and the RTCP is the control and monitoring transmission.
Multimedia Data: Multimedia data refers to data that consist of various media types like text, audio, video, and animation.
Adaptive Real Time Applications: Adaptive real time applications are application that have the capability to transmit multimedia data over heterogeneous networks and adapt media transmission to network changes.
Delay Jitter: Delay jitter is defined to be the mean deviation (smoothed absolute value) of the difference in packet spacing at the receiver compared to the sender for a pair of packets.
Frame Rate: Frame rate is the rate of the frames, which are encoded by video encoder.
Movement Detection Threshold: The movement detection threshold is a parameter that limits the number of blocks which are detected to be “sufficiently different” from the previous frames.