Abstract
The latest experiences hint that the QoS (Quality of Service) approaches adopted by IMS (IP Multimedia Subsystem) technologies are still suffering from a primary containment factor due to the nondifferentiation between IPTV (Internet Protocol Television) video components. The success of IPTV services depends on how the customer perceives QoS related to the provided stream. The satisfaction of this factor is crucial to the success of IMS services. This need constitutes a major challenge for the IMS-based IPTV on the horizon of overcoming the failure of existing QoS models namely IntServ and DiffServ. This paper presents a new PHB (Per-Hop Behavior) that reclassifies and differentiates IPTV sub traffics by using the IPv6 Flow Label field. The proposed PHB will make possible prioritization of sub traffic according to the applied QoS network policy. We also suggest the use of OPNET software to implement IMS-Based IPTV scenarios. Results show that the proposed PHB works well and the Video packet losses vary according to the type of IPTV service used by the user.
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