challenges of (p2p-based) scalable multicast in infrastructure-based mobile networks

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University of Würzburg Department of Distributed Systems Prof. Dr. P. Tran-Gia Challenges of (P2P-based) Scalable Multicast in Infrastructure-based Mobile Networks K. Tutschku [email protected] Workshop on Peer-to-Peer Multicasting (P2PM 2007) Las Vegas, 11. Januar 2007.

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K. Tutschku [email protected] Workshop on Peer-to-Peer Multicasting (P2PM 2007) Las Vegas, 11. Januar 2007. Challenges of (P2P-based) Scalable Multicast in Infrastructure-based Mobile Networks. Conflicts. - PowerPoint PPT Presentation

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Page 1: Challenges of (P2P-based) Scalable Multicast in Infrastructure-based Mobile Networks

University of WürzburgDepartment of Distributed SystemsProf. Dr. P. Tran-Gia

Challenges of (P2P-based) Scalable Multicast in Infrastructure-based Mobile

Networks

K. Tutschku

[email protected]

Workshop on Peer-to-Peer Multicasting (P2PM 2007)Las Vegas, 11. Januar 2007.

Page 2: Challenges of (P2P-based) Scalable Multicast in Infrastructure-based Mobile Networks

University of Würzburg K. Tutschku

Conflicts

Radio capacity is limited vs. nodes/peers assume almost no restriction overload

Radio links are asymmetrical high heterogeneity of nodes/peers

Device mobility and short on-lines high churn rate

Hierarchical architecture vs. dynamic overlays topology might not match

Infrastructure is asset resource management by operators needed

Page 3: Challenges of (P2P-based) Scalable Multicast in Infrastructure-based Mobile Networks

University of Würzburg K. Tutschku

Solutions?

What architecture is needed? Centralized? Decentralized? Hybrid?

What about self-organization? Tuning parameter for degree of decentralization? Multiple objectives?

How to address mobility? Direct routing (e.g. ad hoc routing protocols) or indirect routing (e.g.

MobileIP)?

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