An approach to inter-domain resource reservation for QoS management in next generation networks / Uma abordagem para reserva de recursos no gerenciamento de QoS entre dominios em redes de proxima geração

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The technological evolution that happened on the last decades fostered the steep growth of the Internet, the creation of new Internet capable devices, like sensors and PDAs, and the creation of a multitude of online applications. This new scenario brought challenges very different from those initially considered on the creation of the Internet, so emerged the need for new architectures that genuinely address them: the Next Generation Networks (NGNs). With continuously easier access, the Internet is becoming extremely important to our daily lives and activities like banking transactions, online games and videoconference are demanding more security, speed and bandwidth. In order to ensure these characteristics in NGNs, the quality of service (QOS) management is essential and will have to face great challenges like mobility, technology heterogeneity, and domain and node autonomy. Aiming to address these challenges, this work presents a strategy for resource reservation in inter-domain QoS management in Next Generation Networks. This strategy takes into account the high mobility expected in NGNs and proposes the reuse of reservations to speed up the QoS reestablishment after node or network movements. For the implementation of this strategy, we decided to adapt the Virtual Topology Service, which is a service that helps the domains to advertise QoS information, through virtual topologies, and to negotiate resource reservations independently from the technology they will use to enforce these reservations. The proposed strategy and its implementation were tested in different mobility scenarios over a real NGN prototype. The analysis of the test results showed that the reservation reuse accelerates the reservation of new resources and, consequently, the reestablishment of the QoS expected by the user

ASSUNTO(S)

virtualization computer networks garantia de qualidade virtualização quality assurance redes de computação - gerencia

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