The study on SLA metrics and system architecture for IP TV

In this paper we describe SLA metrics and software architecture for newly upcoming IP TV service. Firstly we show the general description for IP TV. This consists of brief description of IP TV, the general figure of configuration and elements of IP TV network and communication protocol stack of IP TV data transmission for deriving communication quality parameter. And we propose SLA metrics depending on quality measurement point. According to the measurement point the measurable SLA metrics are different. The total view of the IP TV SLA measurement and management architecture is shown. When the quality measurement point is the routers that consist of Internet node, the IP media NMS is the quality measurement system. And when the quality measurement point is the IP TV STB (set-top box), the IP media collector and quality collection server are the quality measurement system. And we show the IP TV SLA software block diagram and the other related network management systems