Davide Astuti
|
|
Research
Interests
- Wireless and Satellite networks
- TCP enhancements
- Link layer protocols
- IP QoS in mobile networks
- Wireless Communications systems
Work Experience
- May 2008 - Present: working at Huawei, Sweden.
- July 2007 - May 2008: working at Alcatel-Lucent, Netherlands.
- August 2005 - July 2007: working at Nokia Siemens Networks, Finland.
- September 2004 - August 2005: working at IIP Mixture
project (sponsors:
Nokia, Sonera,
TEKES) at the University of Helsinki,
Department of Computer Science. The project
addresses performance issues
of IP protocols in wireless networks. The key areas of
interest include
studies on how different types of competing traffic (traffic mixtures)
behave and how the behaviour could be affected with IP QoS-based packet
treatment. In
particular, how co-existence of active queue management and
DiffServ-based packet
treatment reckon with 3G QoS architecture is best
arranged, and how different
applications should exploit the application
protocol in order to allow efficient operation at
the transport
layer. Solutions for enhancing performance of network protocols for
wireless
environment (2.5G and 3G) are investigated. Additionally, IIP
Mixture develops further a
real-time software emulator called Seawind,
which enables performance measurements of
protocol implementations
in modelled networking environments.
- Sep. 2002 -
Aug. 2004: working at
TRANSAT project (Transport Protocol and Resource
Management for Mobile
Satellite Networks) sponsored
by the European
Space
Agency. Partners: Alcatel
Space, Ensica,
Inria, University of Helsinki.
The aim of the project is to develop the functions and performance
of Internet transport
protocols in a DVB-S/DVB-RCS satellite
environment. The project focuses on two main
fields. The first is the
end-to-end TCP protocol enhancements to improve the support
offered
to the transport level at link level. The second is the enhancement of
resource
management for the satellite link, and on the IP level, the
connection of differentiated
packet treatment (QoS) to the QoS support
offered by a satellite link.
During this project and in co-operation
with the other group
members, he designed, validated and implemented a 2.5 layer
protocol specific
for satellite environments (S-LACP, Satellite
Link Aware Communication
Protocol); he analyzed traffic
control issues and QoS provision in Linux, TCP
performance
issues in wireless environment; he used network simulator and
emulator software (NS,
NistNet,
DummyNet,
Seawind, NEP)
for analysing and
testing the proposed solutions. Experiments have
been performed to
validate the implementation and to evaluate its performance
using the Network Emulator
Platform (NEP) provided by
Alcatel Space.
Results have been presented in the ESA Workshop on IP Networking over Satellite, ESTEC, Noordwijk, Netherlands, 24-25 May 2004.
Teaching
- Spring 2004: Assistant in Tietokoneen toiminta (Computer Organization and Architecture).
Education
- Sep 2002 - Present:
PhD studies in Computer Science - Tentative
topic:
"TCP-friendly MAC layer protocols in
wireless networks".
During this period, he deepened
his knowledge about Advanced Wireless
Communication Systems,
Network Programming, Internet protocols for mobile
computing, Real
Time Systems, Broadband Satellite Internet (Quality of
Service,
Technologies and Services), Transport of Multimedia Streams in the
Wireless Internet, Peer-to-Peer computing, Middleware Standards for
mobile
computing.
- Oct 1996 - Jul 2002:
Laurea degree (M. Sc. equivalent) in Electronic
Engineering
(Telecommunications) - University
of
Catania (Italy) - Final mark: 110/110 cum laude. Master
Thesis: "Performance
Issues of TCP transport on satellite
links". The thesis covers extensive
ns-simulation
studies of baseline TCP and a set of proposed TCP enhancements
under various network conditions.
- 1991-1996: High School studies - ITIS "G. Marconi" - Catania (Italy) - Final mark: 60/60
Papers and Publications
- Davide Astuti, Aki Nyrhinen, Ilpo Järvinen, Markku Kojo: SLACP: A Novel Link-Layer Protocol for Wireless WANs. , Seventh International Conference on Networking (ICN 2008): 121-130
- D. Astuti, M. Kojo,
"Evaluating the impact of Peer-to-Peer IP traffic in wireless
Access networks", Proceedings of the 5th
International Network Conference (INC 2005), Doryssa Bay Resort,
Island of Samos, Greece, 5-7 July 2005. [ pdf ]
- M. Kojo,
D. Astuti, L. Daniel, A. Nyrhinen and K. Raatikainen, "Improving
TCP Performance over Wireless WANs using TCP/IP-Friendly Link
Layer", 1st International Conference on E-Business and
Telecommunication Networks (ICETE), 25-28 August 2004 - Setúbal,
Portugal. [ pdf ]
- M. Kojo, D. Astuti, L. Daniel, A. Nyrhinen and K. Raatikainen,
"Enhancing
TCP Performance Over Satellite Networks - A
Link-Aware Approach", Computer Networks (to appear).
- D. Astuti, "Performance Issues of TCP Transport on satellite links". Master's Thesis. Università di Catania, Dipartimento di Ingegneria Informatica e delle Telecomunicazioni, Catania, Italy, July 2002. The thesis has been carried out in the TRANSAT project at the University of Helsinki, Department of Computer Science.
Talks
-
D. Astuti, M. Kojo, "TCP and Link Layer Enhancements in
DVB-S/DVB-RCS
satellite systems;, Berkeley - Helsinki Ph.D. Student Workshop on
Telecommunication
Software Architectures. University
of Berkeley, USA, 21-24 June 2004. [ pdf
]
-
ESA
Telecommunications TRANSAT Project - Final presentation, Workshop
on IP Networking over Satellite, European Space
Agency, ESTEC, Noordwijk, Netherlands, 24-25 May 2004.[ pdf
].
-
D. Astuti, M. Kojo, "Simulation Study of TCP Performance
in TRANSAT Satellite
Architecture", Berkeley -
Helsinki Ph.D. Student Workshop on Telecommunication
Software
Architectures. University of Berkeley, USA, 18-20 August 2003. [
pdf ]
Last updated August 29th, 2008