Robert R. Chodorek

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In this paper we propose an extension to RSVP protocol, based on dynamic resource reservations, which allows for better coexistence of HD video transmission and elastic traffic (e.g. bulk data transfer). These extensions have been evaluated in two different domains, both in the Quality of Experience (QoE) domain and in the Quality of Service (QoS) domain.(More)
The paper presents selected issues on benchmarking the Quality of Experience (QoE) for video streaming and multimedia P2P search services being investigated in the VIFP NoE CONTENT Content Networks and Services for Home Users under participation the Department of Telecommunications (AGH University of Science and Technology Krakow). The first section of 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)
Recently we can observe a significant growth in wireless network domain: cellular, cordless, access, point-to-point links and wireless local area network. It is now obvious that future 3G systems should interact with themselves and integrate well with IPbased Internet. Along with development of wireless networks it is also essential to develop protocol(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)