Explicit Congestion Notification (ECN) transfers a clear indication of congestion through the network and, therefore, gives a possibility to construct closed-loop control of effective transmission rate. In the paper, a simulation model of ECN-capable multicast multimedia delivery in ns-2 environment is discussed. The model includes complete ECN-capable… (More)
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)
— 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.
ECN-capable TCP-friendly layered multicast mul-timedia delivery combines explicit congestion notification (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 protocols (TFRC, TFMCC, WEBRC), which use TCP throughput 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)
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 IP-based Internet. Along with development of wireless networks it is also essential to develop protocol… (More)