ThunderDome: discovering upload constraints using decentralized bandwidth tournaments
Proceedings of the 5th international conference on Emerging networking experiments and technologies
Managing alternative parent peers for providing fast reconnection between peers
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 3
Collaborative measurements of upload speeds in P2P systems
INFOCOM'10 Proceedings of the 29th conference on Information communications
Maximum-bandwidth ALM tree on tree network
CCNC'10 Proceedings of the 7th IEEE conference on Consumer communications and networking conference
Proceedings of the 28th Annual ACM Symposium on Applied Computing
Efficient content-based routing with network topology inference
Proceedings of the 7th ACM international conference on Distributed event-based systems
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In recent years, there has been an increasing interest in peer-to-peer (P2P) multimedia streaming. In this paper, we consider constructing a high-bandwidth overlay tree for streaming services. We observe that underlay information such as link connectivity and link bandwidth is important in tree construction, because two seemingly disjoint overlay paths may share common links on the underlay. We hence study how to construct a high-bandwidth overlay tree given the underlay topology. We formulate the problem as building a Maximum Bandwidth Multicast Tree (MBMT) or a Minimum Stress Multicast Tree (MSMT), depending on whether link bandwidth is available or not. We prove that both problems are NP-hard and are not ap-proximable within a factor of (2/3 + epsiv), for any epsiv > 0, unless P = NP. We then present approximation algorithms to address them and analyze the algorithm performance. Furthermore, we discuss some practical issues (e.g., group dynamics, resilience and scalability) in system implementation. We evaluate our algorithms on Internet-like topologies. The results show that our algorithms can achieve high tree bandwidth and low link stress with low penalty in end-to-end delay. Measurement study based on Plan-etLab further confirms this. Our study shows that the knowledge of underlay is important for constructing efficient overlay trees.