Mobile IPTV

Abstract: We describe two main technical challenges in terms of the network and application levels for mobile IPTV service. To support a multimediastreaming application service over a mobile network environment, we present the IP/MPLS-based NGN architecture with fixed and mobile convergence and its challenge, which is basically to support QoS for mobile IPTV service. To meet the challenges for application source levels, we focus on the relationship of user terminals and video streaming sources to support user-perceived QoE, based on highquality service between heterogeneous terminals. The techniques to meet these challenges depend on the characteristics of media processing and terminal capabilities, such as LCD panel size, resolution, video coding, and so on, in the heterogeneous network environment. To have a relationship between the two different levels, the significant factors mentioned previously are required to deliver the bandwidth coupled with a user profile to provide QoS/QoE in assured seamless mobile IPTV service on client devices.

Abstract: The convergence between existing and emerging technologies such as broadband, mobile, and broadcast networks is considered as a promising opportunity for existing network operators to increase theirs services' audiences. An important research effort is undertaken by main industry actors to face the multidimensional (transport technology, session signaling, and QoS provisioning) heterogeneity in the Next Generation Network (NGN). The per-session service adaptation is crucial to accommodate terminal and network heterogeneity experienced by different mobile users. In this paper, we investigate an intermediate architecture based on interconnection of DVB-T and 802.11 WLAN networks. The 802.11 WLAN is considered today as the "de-facto" wireless access network for the last miles connection. Both its per-service cost-effectiveness and wide acceptation by users make it an ideal candidate to bridge existing broadcast TV services toward the end-users. We propose a seamless cross-layer inter-working between broadcasting network (i.e. DVB-T) and 802.11 WLAN network for adaptive and interactive mobile TV service delivery. We use a specific Adaptation Gateway (AG) at each Access Network to perform media adaptations. AG features a joint channel and video bit-rate awareness to tackle link degradations (signal strength quality, packet loss, etc.). Performance evaluations using an experimental test-bed are conducted and they show that our proposed cross-layer adaptation gateway reduces considerably packet losses and enhances the perceived quality of the TV service. By independently adapting each individual service, it is possible to address network and terminal heterogeneity and to offer interactive and personalized service to the end users

Abstract: We describe two main technical challenges in terms of the network and application levels for mobile IPTV service. To support a multimedia- streaming application service over a mobile network environment, we present the IP/MPLS-based NGN architecture with fixed and mobile convergence and its challenge, which is basically to support QoS for mobile IPTV ser vice. To meet the challenges for application source levels, we focus on the relationship of user terminals and video streaming sources to support user-perceived QoE, based on high- quality service between heterogeneous terminals. The techniques to meet these challenges depend on the characteristics of media processing and terminal capabilities, such as LCD panel size, resolution, video coding, and so on, in the heterogeneous network environment. To have a relationship between the two different levels, the significant factors mentioned previously are required to deliver the bandwidth coupled with a user profile to provide QoS/QoE in assured seamless mobile IPTV service on client devices.

Abstract: Disclosed herein is a handover method and apparatus for providing mobile Internet Protocol Television (IPTV) service over wireless communication networks. The handover method includes checking whether the strength of a signal received from a first base station of a serving first wireless network falls within a predetermined first threshold range; if the strength of the signal falls within the range, checking whether the strength of a signal received from at least one base station of a second wireless network is higher than a second threshold value required for handover; estimating the velocity and direction of a Mobile Node (MN) using location information received from a satellite; predicting a handover target base station using the estimated velocity and estimated location information; and, if the predicted target base station is one of base stations having the second threshold value, performing handover to the target base station.