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)
—The TCP-Friendly Rate Control (TFRC) protocol manifests strong equality towards competing TCP or TCP-friendly flows. Although the RFC 3448 suggests that TFRC is suitable for multimedia, this equality is a great disadvantage in the case of transmitting multimedia over the TFRC. The TFRC emulates TCP-like congestion control using the TCP throughput equation.(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)
The BGP is an external routing protocol, i.e. BGP routing is carried out between autonomous systems. In the paper two BGP route selections, concerned with the selection of paths to and from autonomous systems, are described. The question of local-preference, weight, MED and community attributes are also addressed. 1 Prace prezentowane w niniejszym artykule(More)
1 Streszczenie. Artykuł przedstawia warstwowy model opisujący ustanawianie sesji WebRTC, uzyskany na podstawie analizy dokumentacji protokołów biorących udział w ustanawianiu sesji oraz kodów źródłowych przeglądarek internetowych. Prezentację modelu zilustrowano przykładami transmisji multimedialnej pomiędzy przeglądarkami WWW oraz pomiędzy przeglądarką a(More)