Serral, R.; Yannuzzi, M.; Marin, E.; Martinez, A.; Masip, X. International journal of internet protocol technology Vol. 7, num. 3, p. 148-164 DOI: 10.1504/IJIPT.2013.055471 Data de publicació: 2013 Article en revista
Peer-to-peer (P2P) is a growing technology offering an affordable platform to deploy distributed services and streaming of multimedia content through peer-to-peer television (P2PTV). Nevertheless, to promote such technology it is necessary to provide a solid streaming quality assessment mechanism. In this context, legacy solutions tied to service level agreements are no longer suitable, as for P2P systems, the service consumers become an active part by assisting in the service delivery. To overcome this limitation, we present a generic multi-layer monitoring and management framework to assess the quality of service (QoS) and the quality of experience (QoE) of multimedia traffic in any P2PTV streaming application. We also demonstrate the usefulness of our solution, by analysing the performance of a real streaming application in a P2PTV environment.
The fast evolution of mobile communications and their convergence with internet make necessary to adapt the security services to this new environment. WPKI (Wireless Application Protocol Public Key Infrastructure) can provide these services, but the features of the mobile devices make it a difficult task, especially for complex processes such as the certification path validation that requires long time and resources. In this paper, we show the limitations of WPKI from the verifier's point of view and determine the computational cost and storage capacity required by a verifier, with a mobile terminal, to carry out a certification path validation process when different revocation mechanisms are used.
Serrano, J.; Justo, J.; Marin, R.; Serrat-Fernandez, J.; Serrat, J.; Vardalachos, N.; Jean, K.; et al International journal of internet protocol technology Vol. 2, num. 1, p. 53-65 Data de publicació: 2007-01 Article en revista