In this paper we describe a smooth switching mechanism for enhancing the performance and low-waste traffic of distributed
peer-to-peer video streaming. The mechanism was designed for when streaming topology set up a backup link and a predicted
link to avoid being congested link each nodes. Furthermore this provides a Dominant Keyword procedure which enables to improve the performance of switching time for changing from a peer to another peer. Finally we
shows an implementation design and discuss about an efficiency of this proposal.
[Show abstract][Hide abstract] ABSTRACT: Efficient and scalable live-streaming overlay construction has become a hot topic recently. In order to improve the performance metrics, such as startup delay, source-to-end delay, and playback continuity, most previous studies focused on intra-overlay optimization. Such approaches have drawbacks including low resource utilization, high startup and source-to-end delay, and unreasonable resource assignment in global P2P networks. Anysee is a peer-to-peer live streaming system and adopts an inter-overlay optimization scheme, in which resources can join multiple overlays, so as to (1) improve global resource utilization and distribute traffic to all physical links evenly; (2) assign resources based on their locality and delay; (3) guarantee streaming service quality by using the nearest peers, even when such peers might belong to different overlays; and (4) balance the load among the group members. We compare the performance of our design with existing approaches based on comprehensive trace driven simulations. Results show that AnySee outperforms previous schemes in resource utilization and the QoS of streaming services. AnySee has been implemented as an Internet based live streaming system, and was successfully released in the summer of 2004 in CERNET of China. Over 60,000 users enjoy massive entertainment programs, including TV programs, movies, and academic conferences. Statistics prove that this design is scalable and robust, and we believe that the wide deployment of AnySee will soon benefit many more Internet users.
INFOCOM 2006. 25th IEEE International Conference on Computer Communications, Joint Conference of the IEEE Computer and Communications Societies, 23-29 April 2006, Barcelona, Catalunya, Spain; 01/2006
[Show abstract][Hide abstract] ABSTRACT: The lack of wide deployment of IP multicast in the Internet has prompted researchers to propose end system multicast or application-level multicast as an alternate approach. However, end system multicast, by its very nature, suffers from several performance limitations, including, high communication overheads due to duplicate data transfers over same physical links, uneven load distribution caused by widely varying resource availabilities at nodes, and highly failure-prone nature of end-hosts. This paper presents a self-configuring, efficient and churn-resilient end-system multicast system called PeerCast. Three unique features distinguish PeerCast from existing approaches to application-level multicasting. First, with the aim of exploiting network proximity of end-system nodes for efficient multicast subscription management and fast information dissemination, we propose a novel Internet-landmark signature technique to cluster the end-hosts of the overlay network. Second, we propose a capacity aware overlay construction technique to balance the multicast workload among heterogeneous end-system nodes. Third, we develop a dynamic passive replication scheme to provide reliable end system multicast services in an inherently dynamic environment of unreliable peers. We also present a set of experiments showing the feasibility and the effectiveness of the proposed mechanisms and techniques.
Journal of Network and Computer Applications 11/2008; 31(4-31):821-850. DOI:10.1016/j.jnca.2007.05.001 · 2.23 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: This paper presents design and evaluation of an adaptive streaming mechanism from multiple senders to a single receiver in Peer-to-Peer (P2P) networks, called P2P Adaptive Layered Streaming, or PALS . PALS is a receiver-driven mechanism. It enables a receiver peer to orchestrate quality adaptive streaming of a single, layer encoded video stream from multiple congestion controlled senders, and is able to support a spectrum of non-interactive streaming applications. The primary challenge in design of a multi-source streaming mechanism is that available bandwidth from each peer is not known a pri-ori, and could significantly change during a session. In PALS , the receiver periodically performs quality adaptation based on aggregate bandwidth from all senders to determine (i) overall quality (i.e. number of layers) that can be collectively delivered from all senders, and more importantly (ii) specific subset of packets that should be delivered by each sender in order to gracefully cope with any sudden change in its bandwidth. Our detailed simulation-based evaluations illustrate that PALS can effectively cope with several angles of dynamics in the system including: bandwidth variations, peer participa-tion, and partially available content at different peers. We also demonstrate the importance of coordination among senders and examine key design tradeoffs for the PALS mechanism.
Proceedings of SPIE - The International Society for Optical Engineering 12/2004; DOI:10.1117/12.587465 · 0.20 Impact Factor
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