When is P2P Technology Beneficial for IPTV Services?

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When is P2P Technology Beneficial for IPTV
Services?

• Meng-Ting Lu

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Reference

• Y.-F. Chen, Y. Huang, R. Jana, H. Jiang, M.
  Rabinovich, B. Wei, and Z. Xiao, When is P2P
  Technology Beneficial for IPTV Services, ACM
  NOSSDAV, June 2007.

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Outline

• Introduction
• Network Models
• Model Analysis
• Cost-Benefit Analysis
• Conclusion

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Introduction

• Cloud Model vs. Physical Model
• Cross-ISP P2P traffic
• Pricing Strategy
• Flat fee, usage-based, built-in
• Achieve more profit by providing the appropriate
  incentives for peers
• Couple the pricing models with a physical model
  and study the trade-offs

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Cloud Model
B2S
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Physical Model (ATT Light-Speed)
B2S
B1N
B1S
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P2P Sharing within a Community
B2S
B1S
B1N
Bottleneck
Not beneficial
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P2P Sharing within a Community
B2S
B1S
B1N
Bottleneck
Beneficial
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P2P Sharing across Communities
B2S
B1S
B1N
or
Bottleneck
Not beneficial
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Simulation Setup
B2S 10 Gbps
Content server (1000 programs, 120 mins, 6 Mbps)
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Simulation Setup
20 communities
Content server (1000 programs, 120 mins, 6 Mbps)
B1S
B2S 10 Gbps
B1N 0.622 Gbps
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Simulation Setup

• Server assign a set of peers to serve requests
• Request a streaming with probability 2 every
  tick (1 min)
• May download only one stream at a time
• Program selection according to Zipfs
  distribution
• Keeps the data for 120 mins after download
• Turn off 0.1 and turn on 0.5 every tick
• 5000 time ticks and taking the average over the
  last 2500 time ticks

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Links across communities are heavily utilized.
Limited by B1N
Total of peers 20community size
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Dont consider the bandwidth in the cloud
Traffic across communities increases
Limited by B2S
Total of peers 10000 Community size 500
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Serves all active viewers
Limited by B1N
Limited by B1N, traffic across communities
reduces the bandwidth
Total of peers 10000 Community size 500
B2S
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Cost-Benefic Analysis

• Maximum Profit for Conventional IPTV
• Pnop2p rN Enop2p
• P2P Incentive Models
• Built-in Model
• Pb rN Enop2p tN
• r fee paid by a viewer
• N number of viewers
• tN P2P installation expense

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Cost-Benefic Analysis

• Flat-reward Model
• Pf rN Enop2p twN dwN
• w percent of viewers sign up for P2P
• d reward per P2P user
• Usage-based Model
• Ps rN Enop2p tN qbuTN
• u average video rate
• T program length
• q credit per bit
• b percent of viewers download data from peers

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