COST 290 "Traffic and QoS Control in Multimedia Wireless Networks"

PLEASE fill in and return asap to COST 290 chair:

E-mail: yk@cs.tut.fi

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COUNTRY:

ITALY


Organization:

University of Napoli "Federico II" 
Dipartimento di Informatica e Sistemistica


Org-address:

Via Claudio, 21
80125 - Napoli (Italy)



Representative

(in case of several representatives please repeat the below for each of them):

Family-name,

Ventre

Given-name,

Giorgio

Degrees and positions

Professor

tel.:

+39 081 7683908

fax.:

+39 081 7683816

E-mail:

giorgio@unina.it

URL:

www.grid.unina.it/comics

Family-name,

Romano

Given-name,

Simon Pietro

Degrees and positions

Assistant Professor

tel.:

+39 081 7683823

fax.:

+39 081 7683816

E-mail:

spromano@unina.it

URL:

www.grid.unina.it/comics

<http address of personal or organizational www page, where relevant information 
(wrt the expertise, projects, etc.) could be found>


Activity related to the proposed action:


- SLA and SLS management: In a context where network operators interact with users in a seamless and 
transparent manner for the sale and delivery of a wide range of services the need arises for the 
dynamic creation, configuration and delivery of services with QoS guarantees via the automated 
management of Service Level Agreements (SLAs).
The aim of our research activity is to bring theoretical and practical contributions to this area by 
defining a framework for the provisioning of advanced communication services in premium IP networks. 
Such networks might be characterized by a high degree of complexity, in terms not only of scale, 
but also of number of operators and technological heterogeneity. 
Our contribution aims to be twofold, comprising both the design of the proposed framework and its 
actual implementation. An innovative approach was taken to framework design, based on the concept 
of mediation. 


- QoS routing and TE algorithms: 
QoS routing algorithms take into account 
additive QoS constraints and may be able to find a path which satisfies 
application requirements. But, the spreading of new applications like grid 
computing and new network heterogeneous wireless scenarios calls for an 
accurate management of network resources. The performance of the proposed 
QoS routing algorithms has not been evaluated in a dynamic scenario. On the 
other hand, most of the traffic engineering algorithms assume the available 
bandwidth as the sole QoS requirements. We address the question whether and 
how QoS link weights should be updated and a mathematical framework to 
organize the resource optimization problem.

- Source Traffic Models: 
Internet Traffic measurement and modeling is an important and essential task
to understand and solve performance-related issues of current and future heterogeneous networks.
In this field we developed a methodology and an architecture to build packet-level statistical
models of network traffic based on link observations. We applied our methodology to the traffic 
generated by several applications analyzing traffic traces from two academic networks.
Preliminary results showed that the obtained models have invariant properties.


<a short (not more than 10 lines) description of the expertise and activity the potential representative is
willing to bring into the action and later to supervise this activity; it is foreseen that each such
description will further comprise a sort of a working group within the action. These activities
could be supported by already running  projects, and in this case these projects should be mentioned>