Modeling of Packet Streaming Services in InformationudCommunication Networksud

摘要

Application of the term video streaming in contemporary usage denotes compression techniques anduddata buffering, which can transmit video in real time over the network. There is currently a rapid growthudand development of technologies using wireless broadband technology as a transport, which is a seri-udous alternative to cellular communication systems. Adverse effect of the aggressive environment usedudin wireless networks transmission results in data packets undergoing serious distortions and often get-udting lost in transit. All existing research in this area investigate the known types of errors separately. Atudpresent there are no standard approaches to determining the effect of errors on transmission quality ofudservices. Besides, the spate in popularity of multimedia applications has led to the need for optimizationudof bandwidth allocation and usage in telecommunication networks. Modern telecommunication networksudshould by their definition be able to maintain the quality of different applications with different Qualityudof Service (QoS) levels. QoS requirements are generally dependent on the parameters of network andudapplication layers of the OSI model. At the application layer QoS depends on factors such as resolution,udbit rate, frame rate, video type, audio codecs, and so on. At the network layer, distortions (such as delay,udjitter, packet loss, etc.) are introduced.ud