final presentation survey p2p-videostreamingwmn
TRANSCRIPT
DEMETRIOU, CHARIS
NASIR, MUHAMMAD ANIS UDDIN
SEVERIEN, ANTONIO
RODRÍGUEZ GARCÍA, ANTONIO
Survey on P2P Video Streaming
over Wireless Mesh Networks
1
Overview
• Proposed work
• Introduction
• Wireless Mesh Networks Challenges
• Proposed Optimizations/Solutions
• Related Work
• Conclusion
• Q&A
Proposed Work
• P2P Video Streaming...
• ...over WMNs
• Challenges
• Solutions/Architectures
• Optimization
Wireless Mesh Network
• Cost-effective
• Self organizing
• High capacity
• Low maintenance cost
• Easy deployment
Challenges
• Scarce resources
• Churn
• Quality of Service (QoS)
• Quality of Experience (QoE)
• Latency
• Mobility
• No underlay awareness
Proposed Optimizations/Solutions
• Streaming Architecture
• Peer Selection
• Cross Layer
• Opportunistic Caching
• QoS / QoE
• Resource Usage
• Replication
Peer Selection
• Receiver based Rate allocation and Peer Selection (RPS)
• Latency based
• Geo-location based
• Peer resources based
• ALTO service
Cross Layer Design
• Swarm Intelligence
• ...focusing on scalability and bandwidth for MANETs
• Push-and-pull approach
• Optimal next-hop based on probabilities; derived from swarm
intelligence algorithm (ARA)
• WMN have similar dynamic nature
Opportunistic Caching
• Local caching
• Cross-layer interaction
• Reduction of duplicated content from 46,7% to 1,3%
Quality of Service/Experience
• Collaborative resource exchanges
• 3D wavelet video codec
• Path discovery using AODV
• Video compression algorithm
Resource Usage
• Hybrid TCP
• ALTO server to group neighboring nodes
• Frame rate adaption according to bandwidth
• Avoiding duplicated content
• Peer selection
Replication Scheme
• Home-to-home video clip replication scheme (H2-VIP)
• Deals with online/offline behavior
• Consider popularity of video
• Extra replicas to increase the availability
Related Work
• P2P Video Streaming
• P2P content sharing over WMNs
o discussion of overlay and mesh network combination
o proposed a venture investment scheme to provide better
network performance
• MANETs
o does not provide acceptable QoS, not viable for streaming
o high packet losses
Related Work
• VANETs
o Address the dynamic nature of Vehicular Ad-Hoc Networks (high
speeds, frequent topology and connectivity changes, low
throughput and strict delay requirements)
o Streaming Urban Video
o next-hop selection is based on current position and received
power
o use of graph-coloring theory to detect collisions
Conclusions
• P2P Video Streaming over WMN can be reliable and cost
effective solution
• Scarce resources, churn, mobility, no-underlay awareness
makes problem more challenging
• Different schemes can be used to solve the problems
• Uniting solutions for different problems on one system