研究目的
The work focuses on the expansion of IPTV data flow on a hybrid network that is formed by the EPON and ADSL technologies. Along with the hybrid topology we focus on comparing multicast and unicast expansion of IPTV data traffic within this work.
研究成果
The actual real measurements confirmed the fact that the EP-type networks combined with the ADSL2+ may transmit the multi-media stream with the video either in SD or HD quality for MPEG2 or MPEG4 without any major difficulties through the IPTV protocol with regard to objective video quality assessment. Unfortunately, there is a problem with the metallic part. If the end user was at a great distance from the DSLAM, the video could be significantly degradated, which results in a decrease in the QoS parameters of the telecommunication network.
研究不足
The problem with the metallic part is that if the end user was at a great distance from the DSLAM, the video could be significantly degradated, which results in a decrease in the QoS parameters of the telecommunication network.
