Recently, there has been a rapid growth in the demand for Internet Protocol television (IPTV) services, and video on demand (VOD) is one of its most prominent. A Cisco forecast indicates that total video traffic, including TV and VOD, will account for over 91% of global consumer traffic by 2014. The report also states that VOD traffic would have doubled every two and a half years through to 2014. However, the IP network is also one of the highest contributors to energy consumption and, as such the development of an energy-efficient system is seen as a very important research area.
展开▼
