PALESTRA

 

Prof. Guy Pujolle

Université Pierre et Marie Curie - Paris 6

 

Palestra: Dias 8/11/06 das 10:15 às 11:45 – Sala H - 301

 

An Autonomic Architecture for

the Wi-xx family and Security Issues

 

Abstract - This presentation covers the following two topics:

- An Autonomic Architecture for the Wi-xx family

WiMedia, Wi-Fi, WiMax, Wi-Mobile, WiRAN, the Wi-family is getting bigger; so does the network architecture. It is encouraging to see the fast development of the new IEEE wireless technologies promising the ultimate Internet service deployment on wireless and mobile infrastructures since they would offer larger bandwidth at cheaper price compared to the telecommunication wireless radio resource. However it is disquieting to see that the TCP/IP protocol stack which is supposed to be the heart of the Internet services deployment is not evolving as fast as the wireless technologies do. Here we come up with the hard question which is the network performance of the TCP/IP architecture over wireless networks. It is probably too early to decide to replace TCP/IP by another protocol stack for wireless network support, but it is important to not ignore the problem and analyse the main drawbacks of TCP/IP in wireless networks and think about a new architecture of network communication over the wireless networks.

This presentation provides a survey of what we name here the Wi-family wireless technologies, and emphasizes on an autonomic architecture to optimize the TCP/IP architecture behaviour worsen by the wireless characteristics.

- Security in the Future Wireless Internet

Wireless Internet networks are today composed of several heterogeneous communication systems. These systems should be connected to each other and to the Internet by using the IP protocol. Intercommunion between standards is not evident and mapping security concepts becomes a complex task

The goal of this presentation is to describe some schemes that can guarantee a strong security of the wireless Internet. Those schemes must be mapped to all systems that compose the access networks such as: Wi-Fi, WiMax, WiRAN, Ad hoc, UMTS, CDMA2000, IEEE802.15, etc.

 

O Prof. Guy Pujolle é um renomado pesquisador francês reconhecido por toda comunidade científica. Recebeu o título de doutor pela Paris IX, em 1975, e de doutor de estado pela Paris XI, em 1978. Foi aprovado como professor da Université Pierre et Marie Curie em 1981, em 1987 foi promovido a professor de primeira classe, em 1993 foi promovido a classe excepcional e, recentemente, foi promovido a mais alta classe de professores, sendo um caso rarísissimo de alcançar este nível antes de atingir os 50 anos de idade. Ele é professor honoris causa da Universidade de Pequim e recebeu a medalha de prata do IFIP em 1995. É membro do conselho científico da France Telecom, INRIA, CNET, GMD, CRIM, LSR e GET.  Presidiu diversos grupos de trabalho do IFIP. Presidiu diversos congressos internacionais e vários comitês de programas. É co-inventor da ferramenta QNAP de avaliação de desempenho por filas de espera.  Ele é autor de 17 livros e recebeu o prêmio Roberval pelo melhor livro científico de 1995. É editor de diversas revistas, orientou mais de cem teses e possui mais de 170 artigos publicados.