Agnieszka Chodorek

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Nowadays, we observe rapid growth of multimedia transmissions in the Internet. Multimedia are typically carried out using the RTP protocol, while the rest of Internet traffic is transmitted via the TCP protocol. In the paper the problem of coexistence of elastic and inelastic traffic is presented. In contrast to other papers, which analyze this issue as the(More)
QoS guarantees for real-time HD video transmission can be assured by proper resource allocation. The TFD option of the IP protocol can be used to convey signaling information about required resources for a given transmission. In this paper the new traffic description for TFD option, based on analysis of scene changes, is presented. The traffic description(More)
ECN-capable TCP-friendly layered multicast mul-timedia delivery combines explicit congestion notifica-tion (ECN) with the TCP-friendly layered multicast scheme. TCP-Friendliness denotes that receiver–driven architecture behaves under congestion like the TCP protocol. Unlike well-known TCP-friendly proto-cols (TFRC, TFMCC, WEBRC), which use TCP(More)
In this paper we propose a novel method of dynamic RSVP’s reservations, based on knowledge about the sending stream. The proposed solution is able to assure better link utilization than classis RSVP reservations and offer no worse QoS for HD video transmission than the typical RSVP reservations. Keywordsnetwork emulation, HD video streaming, QoS,(More)
The Trafïîc Flow Description (TFD) option is an experimental option of the IP protocol, designed by the Authors, able to assure signaling for QoS purposes. The option is used as a carrier of knowledge about forthcoming traffic. If planning horizons are short enough, this knowledge can be used for dynamic bandwidth allocation. In the paper an(More)