A Proposed Model for QoS Provisioning in IMS-Based IPTV Subsystem

A technical prerequisite for a converged network is a common service delivery platform that is independent from the access networks. The 3GPP SIP-based IP Multimedia Subsystem is defined for this purpose. On the other hand, Internet Protocol-based television (IPTV) is defined as multimedia services such as television/ video/ audio/ text/ graphics/ data delivered over IP-based networks to provide the required level of QoS. This article analyses the mechanisms of resource allocation and admission control by employing logical interfaces that carry SIP messages for Internet Protocol-based television services in NGN.