Resource Allocation in Underprovisioned Multioverlay Live Video - - PowerPoint PPT Presentation

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resource allocation in underprovisioned multioverlay live

Resource Allocation in Underprovisioned Multioverlay Live Video - - PowerPoint PPT Presentation

Nov 01, 2023 339 likes •815 views

Resource Allocation in Underprovisioned Multioverlay Live Video Sharing Services Jiayi Liu 1 , Shakeel Ahmad 2 , Eliya Buyukkaya 1 , Raouf Hamzaoui 2 and Gwendal Simon 1 1 Telecom Bretagne 2 De Montfort University MMOG player video casting tool

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Resource Allocation in Underprovisioned Multioverlay Live Video Sharing Services

Jiayi Liu1, Shakeel Ahmad2, Eliya Buyukkaya1, Raouf Hamzaoui2 and Gwendal Simon1

1Telecom Bretagne 2De Montfort University

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MMOG player video casting tool

Massively Multiplayer Online Game collaborative tool

2 / 20 Jiayi Liu Multioverlay Bandwidth Allocation

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SLIDE 3

MMOG player video casting tool

Massively Multiplayer Online Game collaborative tool MMOG player video casting tool

Players emit user-generated videos Developed by the CNG (Community Network Game) project Integrated in "The Missing Ink" (www.missing-ink.com)

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Xfire : online game player video casting platform

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SLIDE 5

Challenges

Thousands of simultaneous video sources

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SLIDE 6

Challenges

Thousands of simultaneous video sources Each video is seen by a dozen of players

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SLIDE 7

Challenges

Thousands of simultaneous video sources Each video is seen by a dozen of players Video sources are low-capacity computers

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SLIDE 8

Challenges

Thousands of simultaneous video sources Each video is seen by a dozen of players Video sources are low-capacity computers CDN is not cost-effective

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SLIDE 9

Challenges

Thousands of simultaneous video sources Each video is seen by a dozen of players Video sources are low-capacity computers CDN is not cost-effective → peer-to-peer may be useful Solution : multioverlay P2P video streaming system

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SLIDE 10

Avancement

1

Multioverlay P2P video streaming system

2

Inter-overlay bandwidth allocation problem

3

Performance evaluation

4

Conclusion

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SLIDE 11

System in a Nutshell Management Server

s1 s2 s3

p1 p1 p2 p2 p2

A player can simultaneously watch several videos

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SLIDE 12

System design points

Intra-overlay P2P video streaming :

Mesh-based : bandwidth fluctuation and peer dynamics

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System design points

Intra-overlay P2P video streaming :

Mesh-based : bandwidth fluctuation and peer dynamics

Inter-overlay bandwidth allocation :

Peers allocate their uplink bandwidth Independent with intra-overlay video streaming

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SLIDE 14

Avancement

1

Multioverlay P2P video streaming system

2

Inter-overlay bandwidth allocation problem

3

Performance evaluation

4

Conclusion

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SLIDE 15

Bandwidth Allocation Problem

Peers watching several videos should share their uplink Problem : How to allocate bandwidth to overlays ?

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SLIDE 16

Bandwidth Allocation Problem

Peers watching several videos should share their uplink Problem : How to allocate bandwidth to overlays ?

verlay1
verlay2
verlay3

p1

uplink : 9

p2

uplink : 5

p3

uplink : 8

p4

uplink : 8

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SLIDE 17

Bandwidth Allocation Problem

Peers watching several videos should share their uplink Problem : How to allocate bandwidth to overlays ?

verlay1
verlay2
verlay3

p1

uplink : 9

p2

uplink : 5

p3

uplink : 8

p4

uplink : 8

peer subscribes to overlay 9 / 20 Jiayi Liu Multioverlay Bandwidth Allocation

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SLIDE 18

Bandwidth Allocation Problem

Peers watching several videos should share their uplink Problem : How to allocate bandwidth to overlays ?

verlay1
verlay2
verlay3

p1

uplink : 9

p2

uplink : 5

p3

uplink : 8

p4

uplink : 8 capacity : 6 demand : 18 capacity : 4 demand : 12 capacity : 8 demand : 18

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SLIDE 19

Bandwidth Allocation Problem

Peers watching several videos should share their uplink Problem : How to allocate bandwidth to overlays ?

verlay1
verlay2
verlay3

p1

uplink : 9

p2

uplink : 5

p3

uplink : 8

p4

uplink : 8

6 peer allocates to overlay

capacity : 12 demand : 18 capacity : 7 demand : 12 capacity : 8 demand : 18

6 3 9 / 20 Jiayi Liu Multioverlay Bandwidth Allocation

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SLIDE 20

Bandwidth Allocation Problem

Peers watching several videos should share their uplink Problem : How to allocate bandwidth to overlays ?

verlay1
verlay2
verlay3

p1

uplink : 9

p2

uplink : 5

p3

uplink : 8

p4

uplink : 8 capacity : 18 demand : 18 capacity : 8 demand : 12 capacity : 22 demand : 18

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Objective 1 : minimizing the waste of resources Overlay provisioning :

verlay capacity - overlay demand
verlay capacity - overlay demand ≥ 0 :
verprovisioned overlay (G+)
verlay capacity - overlay demand < 0 :

underprovisioned overlay (G−)

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Objective 1 : minimizing the waste of resources Overlay provisioning :

verlay capacity - overlay demand
verlay capacity - overlay demand ≥ 0 :
verprovisioned overlay (G+)
verlay capacity - overlay demand < 0 :

underprovisioned overlay (G−)

Objective : minimizing total underprovisioning

verlay∈G− |capacity − demand|

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Our solution : a max-flow

s1 s2 s3 p1 p2 p3 p4

uplink : 9 uplink : 5 uplink : 8 uplink : 8 capacity : 6 demand : 18 capacity : 4 demand : 12 capacity : 8 demand : 18

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SLIDE 24

Our solution : a max-flow

s1 s2 s3 p1 p2 p3 p4 f

0/9 0/5 0/8 0/8

capacity : 6 demand : 18 capacity : 4 demand : 12 capacity : 8 demand : 18

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Our solution : a max-flow

s1 s2 s3 p1 p2 p3 p4 f

0/9 0/5 0/8 0/8

q

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Our solution : a max-flow

s1 s2 s3 p1 p2 p3 p4 f

9/9 5/5 8/8 8/8

q

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SLIDE 27

Objective 2 : for underprovisioned system

Underprovisioned system :

p bandwidth <
verlay required bandwidth

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SLIDE 28

Objective 2 : for underprovisioned system

Underprovisioned system :

p bandwidth <
verlay required bandwidth

Given objective 1, how to share the resource deficit ?

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Objective 2 : for underprovisioned system

Underprovisioned system :

p bandwidth <
verlay required bandwidth

Given objective 1, how to share the resource deficit ? popularity : the most popular sources first

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Objective 2 : for underprovisioned system

Underprovisioned system :

p bandwidth <
verlay required bandwidth

Given objective 1, how to share the resource deficit ? popularity : the most popular sources first diversity : the largest number of sources

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SLIDE 31

Objective 2 : for underprovisioned system

Underprovisioned system :

p bandwidth <
verlay required bandwidth

Given objective 1, how to share the resource deficit ? popularity : the most popular sources first diversity : the largest number of sources

thers : e.g. payment : the premium sources first

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Our solution : a min-cost max-flow

s1 s2 s3 p1 p2 p3 p4 f

0/9 0/5 0/8 0/8

q

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Our solution : a min-cost max-flow

s1 s2 s3 p1 p2 p3 p4 f

0/9 0/5 0/8 0/8

q

0/12 0/8 0/10

add a cost function popularity : 1

n, ∀s

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SLIDE 34

Our solution : a min-cost max-flow

s1 s2 s3 p1 p2 p3 p4 f

0/9 0/5 0/8 0/8

q

0/12 0/8 0/10

add a cost function popularity : 1

n, ∀s

diversity : 1 − 1

n, ∀s

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SLIDE 35

Our solution : a min-cost max-flow

s1 s2 s3 p1 p2 p3 p4 f

0/9 0/5 0/8 0/8

q

0/12 0/8 0/10

add a cost function popularity : 1

n, ∀s

diversity : 1 − 1

n, ∀s

payment :

  

1, if s is premium 2, otherwise

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Avancement

1

Multioverlay P2P video streaming system

2

Inter-overlay bandwidth allocation problem

3

Performance evaluation

4

Conclusion

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System practicability

Peer dynamics

Peers periodically report their estimated upload bandwidth Server periodically recomputes, and sends bandwidth allocation

Light peer server communication overhead

0.8 Mbps server upload bandwidth : 100,000 peers, 1min period, 3 average watching overlays×2 bytes 0.8 Mbps server download bandwidth : 100,000 peers, 1min period, 4 bytes bandwidth and 4 bytes peer ID.

Min-cost-max-flow algorithm computation time

nb. peers

1,000 5,000 10,000 50,000 100,000 time (sec) 0.005 0.086 0.311 7.455 31.887

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Simulations : models and settings

Realistic player upload bandwidth :

log-normal distribution from 256kbps to 5Mbps

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Simulations : models and settings

Realistic player upload bandwidth :

log-normal distribution from 256kbps to 5Mbps

Real trace based MMOG player relationship :

Xfire ≃ facebook network of Smith College Pareto’80-20 : 80% videos from 20% most active players

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Simulations : models and settings

Realistic player upload bandwidth :

log-normal distribution from 256kbps to 5Mbps

Real trace based MMOG player relationship :

Xfire ≃ facebook network of Smith College Pareto’80-20 : 80% videos from 20% most active players

Watchers’ behavior leads to a Zipf video popularity :

most popular : 330 peers ; median popularity : 7 peers

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Results - PSNR

20 25 30 35 0.2 0.4 0.6 0.8 1 PSNR (dB) CDF of peers naive

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Results - PSNR

20 25 30 35 0.2 0.4 0.6 0.8 1 PSNR (dB) CDF of peers naive DAC

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Results - PSNR

20 25 30 35 0.2 0.4 0.6 0.8 1 PSNR (dB) CDF of peers naive DAC diversity-based popularity-based

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Avancement

1

Multioverlay P2P video streaming system

2

Inter-overlay bandwidth allocation problem

3

Performance evaluation

4

Conclusion

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Conclusion

A multioverlay P2P live video streaming system Inter-overlay bandwidth allocation problem

Minimizing global underprovisioning Sharing the resource deficit with different policies

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