Keio University, Graduate School of Media and Governance
MAUI Project
Ph.D. Dissertation

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TITLE MUSE Stream: Adaptive Overlay Network for High-Bandwidth Streaming

Overlay network is known as an ideal approach to easily exchange contents between users. However, most overlay network applications only support narrow bandwidth streaming.

To know how overlay network can support high-quality streaming with stable conditions, the following three factors that limit reception bandwidth of overlay streaming are analyzed in this thesis: (1) Overlay topology design only to be scalable, (2) Overlay topology design only to be robust (3) Retransmission of lost packets control without intellectual decision.

Based on the analysis, the novel overlay streaming architecture, called Overlay Network Controlled by MUltiple SEssions for High-Bandwidth Streaming (MUSE stream), was proposed.

MUSE stream consists of the following components: (1) Adaptive Hybrid Topology is designed based on Multiple-Tree topology as it can transmit high-bandwidth stream and is highly available and scalable. It defines the "distance of relationship" as a metric to select nodes that retransmit lost packet to receivers. (2) Redundant Node Selection (RNS) selects retransmission nodes based on the retention probability of lost packets requested by receivers. (3) Reception Packet Fluctuation (RPF) monitors the network condition and reception packet fluctuation of the receiver in the overlay network. (4) Join and Retransmission Control (JRC) dynamically adjusts the number of join and data retransmission requests based on RPF to prevent decreasing reception bandwidth in the overlay network.

MUSE stream has been implemented and evaluated. The basic behaviors of JRC, RPF, and RNS have been evaluated by simulations. The results show that MUSE stream achieves additional 20 % reception bandwidth even though there was a high network bandwidth gap between receivers, and 15 % reception bandwidth on PlanetLab testbed as the actual experiments.

Every user can use point-to-multipoint high-bandwidth streaming system with low cost based on this research. This research can lead to a relationship innovation between CSP / ISP and general users.

Keywords :
1. Real-time Streaming, 2. Overlay Network, 3. P2P, 4. Multimedia, 5. Internet

CONTACT To obtain the dissertation, please contact;
HISAMATSU, Tsuyoshi ( ringo at )

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