TR2009-010

QoS/QoE Techniques for IPTV Transmissions



Internet Protocol TV (IPTV) has recently gained momentum as one of the key applications in the telecommunications market. Most researchers believe that IPTV service represents a key opportunity for operators around the world to benefit from video delivery over IP networks. In this paper, we investigate the quality of Service (QoS) and Quality of Experience (QoE) techniques for IPTV transmissions. Particularly, we address two technical challenges in IPTV system: error concealment and channel zapping. To overcome the above challenges, we extend the function of the set-top box (STB) and the home network gateway. As for channel zapping, we propose to employ peer-to-peer communication as a supplement in the channel switching period. As for error concealment, we develop an approach of AL-FEC based adaptive error recovery. Since our study addresses core problems in the IPTV network, we believe it has practical significance to the industrial community.