- Menu
- Passa a palavra.
Partilha esta página. - Linked in
- Copiar Url
-
Speaker: Prof. André Zúquete (Univ Aveiro/IT) The talk is about a fast, secure handover protocol for 802.11 networks. The protocol keeps the security functionalities of 802.1X but uses a new reauthentication protocol that promotes fast handovers during reassociations.
20 março 2009
Resumo: The talk is about a fast, secure handover protocol for 802.11 networks. The protocol keeps the security functionalities of 802.1X but uses a new reauthentication protocol that promotes fast handovers during reassociations. The reauthentication protocol recovers the original 802.11 paradigm: authenticate first, reassociate next. Following this paradigm, two new 802.11 authentication and reassociation protocols where conceived, which allow a mobile station to perform 802.1X reauthentications before reassociations with the same functionality of a complete 802.1X authentication. Furthermore, reassociation protocols are authenticated, preventing denial-or-service scenarios that are not handled by 802.11i. This novel approach requires little from the environment, namely a new, central Reauthentication Service, for storing data used in the reauthentication of stations. The time of security-related tasks that contribute to handover delays was dramatically reduced to 1.5~ms, while an 802.1X fast resume takes more than 150~ms. Finally, the new protocol addresses most design goals and problems stated by standards' working groups for fast, secure roaming in 802.11.
12 março 2009
O INESC Porto, como associado da FEUP e estando integrado no seu espaço, participará uma vez mais na "Semana Profissão: Engenheiro" (SPE) da FEUP, que se realizará nos dias 4, 5 e 6 de Março de 2009, e que tem como objectivo dar a conhecer as várias facetas da engenharia aos alunos e professores do ensino secundário.
06 março 2009
The course aims at introducing concepts of social network analysis and applying them to innovation and knowledge generation studies.
21 fevereiro 2009
Presentation by Catalin Calistru about its PhD work in multimedia databases.
12 fevereiro 2009
We propose a framework for the creation of value with Open Source software that take to account the recent technologies in the field of telecommunication, take advantage of knowledge transfer as a competitive edge and the relationship between private companies, public entities and research centres. The validation of this methodology is based in the Osterwalder model, cases studies and feedback received from industry, OS community leaders and others stakeholders.
29 janeiro 2009
Talk by Pedro Pinto from the Massachusetts Institute of Technology (MIT). Overview of the research pursued at the MIT Wireless Communications Group. The group has performed pioneering work on ultrawideband (UWB) radio, and provided a foundation for the design of UWB wireless networks. We will focus on the advances and current challenges in the fields of UWB synchronization, location-aware networks, network interference, channel characterization, and physical-layer security.
23 janeiro 2009
Talk by Jan Weil from TUB - "In addition to melody and rhythm, harmony is a key feature of western music. Simultaneously sounding pitches forming chords, and sequences of chords forming cadences establish the tonal context of a musical piece. In this talk I provide an overview of my recent work on the analysis of harmony in music signals. This analysis yields a mid-level representation, for which exemplary applications are presented."
22 janeiro 2009
Presentation by Dr Carlos E. Thomaz, Head of the Image Processing Lab (IPL) Dept of Electrical Engineering, Centro Universitario da FEI, Sao Paulo - Brazil
13 janeiro 2009
Group Meeting no Campo Alegre (Porto) com Filipe Magalhães que abordará o tema: "Using Genetic Algorithms with Local Search for Thin Film Metrology"
07 janeiro 2009
Presentation by Luís Barral from MOG Solutions also in the context of the lectures of the course TV Digital e Novos Serviços of MIEEC.
12 dezembro 2008
O INESC Porto marcará presença em mais uma edição do Fórum Ciência Viva que terá lugar na FIL, Parque das Nações, em Lisboa, nos dias 22 e 23 de Novembro, assinalando o início da Semana da Ciência e da Tecnologia.
23 novembro 2008
The access to the final selection minute is only available to applicants.
Please check the confirmation e-mail of your application to obtain the access code.