A QoS Distributed Transport Service

Vitor Basto, Vasco Freitas

Universidade do Minho
Departamento de Informática
P-4710-057 Braga, Portugal

Tel.: +351 253 604430
Fax.: +351 253 604471
E-mail: {vbasto,vf} (at) di.uminho.pt


A distributed transport service in a global Quality of Service (QoS) framework over IP based protocols is presented in this paper. A distributed strategy of dynamic transport agents located along the end-to-end path is suggested. QoS management focused on transport layer based QoS adaptation for tolerant multimedia traffic is provided by the designed mechanisms. Tradeoffs between traffic QoS requirements and network operation conditions are studied in order to improve application level QoS parameters. It is in the context of Heterogeneous Long Fat Pipe Networks1 (HLFNs) that we show important improvements both on application QoS parameters and network resources utilization.

3rd ACS/IEEE Int Conf on Computer Systems and Applications (AICCSA-05) Workshop 2: Internet Compatible QoS in Ad hoc Wireless Networks Cairo, Egypt, Jan 3-6, 2005