Measurements of Multicast Television over IP

Imran, Kashif; Mellia, Marco; Meo, Michela

doi:10.1109/lanman.2007.4295994

Cited by 17 publications

(19 citation statements)

References 13 publications

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“…To date, we believe ours is the only study to have considered packet level performance of IPTV flows across the end-to-end network path, including the residential access links. Previous work on backbone network performance with IPTV traffic [7], [3], [2] provides a useful comparison with the full end-to-end performance captured in our results, and supports our assertion that the edge network is generally the bottleneck for IPTV flows. This allows us to consider the principal component of our results as edge-network effects.…”

Section: Related Worksupporting

confidence: 88%

“…This models over-the-top services, such as the BBC's iPlayer, but is potentially pessimistic for managed intra-domain IPTV services. However, we note that many backbone networks are over-provisioned [2], and previous studies of IPTV flows across a residential ISP's distribution network [3] have reported excellent performance up to the last-mile, implying that the residential link is the bottleneck that determines end-to-end performance, making these results of interest to managed IPTV service operators.…”

Section: Measurement Methodologymentioning

confidence: 74%

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Packet Loss Characteristics of IPTV-Like Traffic on Residential Links

Ellis

Perkins

2010

2010 7th IEEE Consumer Communications and Networking Conference

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Abstract-Packet loss is one of the principal threats to quality of experience for IPTV systems. However, the packet loss characteristics of the residential access networks which carry IPTV are not widely understood. We present packet level measurements of streaming IPTV-like traffic over four residential access links, and describe the extent and nature of packet loss we encountered. We discuss the likely impact of these losses for IPTV traffic, and outline steps which can ameliorate this.

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Section: Related Worksupporting

confidence: 88%

Section: Measurement Methodologymentioning

confidence: 74%

Packet Loss Characteristics of IPTV-Like Traffic on Residential Links

Ellis

Perkins

2010

2010 7th IEEE Consumer Communications and Networking Conference

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“…The probe node is based on high-end PCs running Linux, and has been installed in a PoP located in Torino, Italy. The first bytes of the packet payload are exposed to the Tstat [13] analyzer, that identifies the application generating each packet (see [10], [11] for details). We therefore distinguish the traffic in the following classes,…”

Section: Measurement Methodologymentioning

confidence: 99%

“…VideoPumps are responsible of transcoding the original high-definition digital TV source into broadcasting quality MPEG-2 system stream. Different MPEG-2 encoders are used, resulting in stream bitrate ranging from 2.5Mbps up to 4Mbps, being either CBR or VBR [11]. 1336B long packets are used by the VideoPump to avoid IP fragmentation problems 1 .…”

Section: The Fastweb Networkmentioning

confidence: 99%

“…After having investigated VoIP [10] and IPTV [11] traffic in isolation, in this paper, we present, to the best of our knowledge, the first extended set of measurement results collected via passive monitoring of a mixture of data/voice/video IP traffic. Real traffic traces are collected from an ISP provider in Italy, called FastWeb [12], which is the main broadband telecommunication company in Italy, offering telecommunication services to more than 5 millions of families, with 1 million of subscribers (11% of market share).…”

Section: Introductionmentioning

confidence: 99%

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Traditional IP measurements: What changes in a today multimedia IP network

Ciullo

Mellia

Meo

2008

2008 4th International Telecommunication Networking Workshop on QoS in Multiservice IP Networks

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Abstract-In this paper we present measurement results collected from real traces on the network of FastWeb, an Italian ISP which is the main broadband telecommunication company in Italy. The network relies on a fully IP architecture and delivers to the user data, VoIP and IPTV services over a single broadband connection. The aims of this work are the evaluation of traditional measurement indexes in a novel network environment with a mixture of traffic generated by various services and the identification of possible changes of the traffic properties due to this traffic mixture.Our measurement campaign, based on passive techniques, provides traffic characterization at both the packet and the connection/flow levels and focuses on time evolution, distributions, long range dependence and periodicity properties. We discover that the main characteristics of data traffic are kept unmodified, showing LRD properties both at the packet and flow levels. VoIP and IPTV traffic instead presents periodicities of the packet arrival process, due to periodicity of the sources. Considering the VoIP flow arrival process, the traditional Markovian assumption still holds true.

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Measurement of IPTV traffic from an operative network

Mellia

Meo

2010

Trans Emerging Tel Tech

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SUMMARYIn this paper, we present measurement results of IP TeleVision (IPTV) multicast traffic collected from real of the FastWeb network. FastWeb is an ISP provider, which is the main broadband telecommunication company in Italy. The network relies on an IP architecture and, besides television channels, delivers to the user services such as data transfer and VoIP over a single broadband connection. The traffic we focus on consists of 83 high-quality digital TV channels encoded using different MPEG-2 encoders. The results show that, depending on the encoder and based on the bitrate, flows can be classified as being: 1-VBR, i.e. with one typical value of the mean bit rate, 2-VBR, i.e. two typical bitrate values are observed, and VBR. Measurement of the packet loss, jitter and inter-packet gap show that, independently from the class, packet generation process of the flows can have various degrees of burstiness. Despite the packet level burstiness, average jitter is limited to few milliseconds and no packet loss was ever observed in the backbone. Moreover, the evolution of inter-packet gap over time remains basically unchanged when observing a flow in different time periods. Our results prove that the FastWeb network is properly carrying IPTV traffic, and that today technology is mature to make TV over IP feasible and of good quality.

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Measurements of Multicast Television over IP

Cited by 17 publications

References 13 publications

Packet Loss Characteristics of IPTV-Like Traffic on Residential Links

Packet Loss Characteristics of IPTV-Like Traffic on Residential Links

Traditional IP measurements: What changes in a today multimedia IP network

Measurement of IPTV traffic from an operative network

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