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

tutschku@informatik.uni-wuerzburg.de

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

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

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)?