Distributed Multimedia and QOS: A Survey
IEEE MultiMedia
Redes de Computadoras
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We are living in a society of information, where the users wish more in getting, supplying, sharing and interacting through information and services anywhere, any time with any device. Then some items should be assured such as: mobility and interactivity, on an environment where the technological convergence takes place and, of course, the End-to-End QoS is assured. One of the biggest challenges is to assure the End-to-End QoS to the multimedia interactive services delivery to the moving users, that usually are the most QoS standing top, because they have, besides the well known computer network parameters, specific ones required by the audio and video user's perception and by the need of synchronization between data, video and sound. The aim for this paper is to propose a method to elicit the QoS parameters aiming the establishment of the SLA (Service Level Agreement) between the service providers and final users to the mobile and interactive services inside to a technological convergence environment. This method consists in the service identification to be offered to the final user, elaborating a tree graph, that is used to identify other services, which could be compound it. Mapping the QoS parameters in a methamodel, and finally validating it, after that it is possible to extract from the methamodel the QoS parameters to be set in the SLA. This work suggests a first step to solve the lack of standardized methods to the SLA establishment applied to mobile and interactive multimedia services under the point of view to the final users.