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Defined by the 3GPP, the IP multimedia subsystem (IMS) is an architectural framework that enables the delivery of multimedia services in mobile networks. Based on the session initiation protocol, the IMS offers unified billing, QoS negotiation mechanisms, and the possibility of combining services deployed in different environments like CAMEL and Parlay OSA. With the aim of determining the real limitations...
The recent growth of peer-to-peer traffic and the popularity of streaming video is a cause for possible instability of the networks because most of these services run over UDP, without any mechanism for congestion control. Moreover, the adaptive features of peer-to-peer traffic may lead a misuse of the classical QoS rules legitimately applied to end-user applications. This paper proposes the usage...
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