Tstat home | TNG home
Multicast IP-TV TracesThe following traces (libpcap consistent) which are available for the research community, contain multicast IP-TV traffic only. Traces have been collected and organized with the support of the RECIPE (Robust and Efficient traffic Classification in IP nEtworks) and MIMOSA (MIsure sperimentali e MOdelli di traffico dati multiServizio A pacchetto) projects.
Multicast IP-TV collection
Traces contain about 5 minutes each of multicast IP-TV traffic only collected from a FastWeb PoP located in Torino, Italy. FastWeb network is Gigabit-Ethernet operative. The FastWeb IP-TV architecture is based on both standard and proprietary protocols. In particular, 125 digital TV channels were broadcasted. Each TV channel is encoded using high-quality (720x576@25fps) MPEG-2 standard. Different MPEG-2 encoders are used, resulting in stream bitrate ranging from 2.5Mbps up to 4Mbps, being either CBR or VBR. This corresponds to broadcast all TV channels to all network devices, accounting for an aggregate bitrate of about 280Mbps. The video stream is then encrypted and encapsulated over UDP using a proprietary layer. 1336 Bytes long packets are used to avoid IP fragmentation problems. Note that data packets collected end after 58 bytes. Traces of this collection was processed to accomplish several and deep analysis about multicast IP-TV traffic. Results are described into two papers:
Traces are available in gzip format only. Due to NdA, researchers interested in downloading the traces are invited to send an explicit request to mellia [at] polito [dot] it
Tstat home | TNG home | workgroup | people | software | papers
©2008 Telecommunication Networks Group - Politecnico di Torino