DMMP - A New Dynamic Mesh-based Overlay Multicast Protocol Framework
Staff: Xiaoming Fu ,
Dieter Hogrefe ,
Jun Lei
Publications of this project:
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2009
Interest-based Peer-to-Peer Group Management ,
Jun Lei , Xiaoming Fu , Second IEEE/ACM International Workshop on Future Multimedia Networking (FMN 2009), Coimbra, Portugal,
Springer LNCS, June 2009.
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Peer-to-Peer systems become popular applications but suffer from insufficient resource availability which is caused by free-riders and inefficient lookup algorithms. To address the first cause, a number of recent works have focused on providing appropriate incentive mechanisms to encourage participants to contribute their resources to the P2P systems. To improve the lookup efficiency, locality-aware peer management has been introduced into the research community. However, existing proposals attempt to optimize the service performance during the data transmission period mostly after performing the neighboring lookup, which cannot address the fundamental concern of reducing lookup traffic. Besides, existing implementations select available contributors among random neighbors suggested by a specific server. Therefore, this paper proposes interest-based peer-to-peer management (IPM) protocol to facilitate the peering lookup. Our design philosophy differs from existing work that IPM is a client-only approach and can be represented as either an alternative or a complementary to the current proposals. With additional locality-awareness considerations, IPM can reduce the lookup overhead while optimizing the P2P traffic performance. The simulation results essentially state that IPM can largely improve the efficiency and reliability of P2P media distribution systems, for instance, reduces control overhead by 50% on average and reduces average packet loss rate up to 34.7%.
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2007
Performance Evaluation of a Novel Overlay Multicast Protocol ,
David Weiss , Bachelor's thesis, No. ZFI-BM-2007-11, Zentrum fuer Informatik, Universitaet Goettingen,
ISSN 1612-6793, November 2007.
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The demand for high-bandwidth media streaming over the Internet is growing. For large groups of receivers, media streaming places a heavy burden on the network. IP Multicast can alleviate this problem, but it is not widely deployed. In recent years, application layer multicast and overlay multicast have been proposed as alternatives. However, there are still concerns about the efficiency, scalability and deployment of these architectures.
In this thesis, a novel application layer multicast approach, called the Dynamic Mesh-based Overlay Multicast Protocol (DMMP), is evaluated. DMMP establishes an overlay network core consisting of super nodes, which are end-hosts with particularly high capacities. Each super node manages a cluster of non-super nodes. We use network simulations to analyze the performance of DMMP. For that purpose, we have implemented a DMMP module in OverSim. OverSim is an overlay network simulation framework based on OMNeT++.
We compare DMMP with NICE, a well-known application layer multicast protocol, that is claimed to achieve low link stress and low control overhead. We experiment with groups of up to 2048 members. Our results indicate that DMMP can achieve comparable service quality with less control overhead, and that DMMP has the potential to scale to a high number of receivers.
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