A store-and-forward architecture for video-on-demand service

Gelman, A.D.; Kobrinski, H.; Smoot, L.S.; Weisnstein, S. B.; Fortier, M.; Lemay, D.

doi:10.1109/cjece.1993.6591636

Cited by 51 publications

(17 citation statements)

References 3 publications

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“…There are many important video services pertaining to entertainment, education, advertising and information, such as movie-on-demand, distance learning, home shopping, and interactive news [1]- [4].…”

Section: Introductionmentioning

confidence: 99%

Distributed servers architecture for networked video services

Chan

Tobagi

2001

IEEE/ACM Trans. Networking

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Abstract-In an on-demand video system, the video repository generally has limited streaming capacities and may be far from the users. In order to achieve higher user capacity and lower network transmission cost, distributed servers architecture can be used, in which multiple local servers are placed close to user pools and, according to their local demands, dynamically cache the contents streamed from the repository. We study in this paper a number of caching schemes as applied in the local servers depending on whether the repository is able to multicast movie contents to the local servers or not, and whether the local servers can exchange their cached contents among themselves or not. Our caching schemes keep a circular buffer of data for the movie requested, and hence movies are partially cached. By adjusting the size of the buffer, such caching is able to achieve better tradeoff between network channels and local storage as compared to the traditional caching in which a movie is treated as an entity. For each caching scheme, we study the tradeoff between the local storage and the network channels, and address how the total cost of the system can be minimized by appropriately sizing the buffer. As compared to a number of traditional operations (request batching and multicasting, true-VOD, etc.), we show that distributed servers architecture is able to achieve much lower system cost to offer on-demand video services.Index Terms-Caching schemes, distributed servers architecture, network channels and local storage tradeoff, unicast and multicast, video-on-demand.

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Section: Introductionmentioning

confidence: 99%

Distributed servers architecture for networked video services

Chan

Tobagi

2001

IEEE/ACM Trans. Networking

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“…Gelman et al present [12] an store-and-forward architecture that can provide VoD. Their architecture consists of four basic elements: The Information Provider warehouse stores video material and transmits it through high speed ATM network links to the central office that provides a processor responsible for service management and video buffering.…”

Section: Related Workmentioning

confidence: 99%

Improving content replication and QoS in distributed peer-to-peer VoD appliances

Ditze

Loeser

Altenbernd

et al. 2004

24th International Conference on Distributed Computing Systems Workshops, 2004. Proceedings.

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Video-on-Demand applications and their corresponding issues have been a long-term research topic. The commercial deployment and exploitations of these scenarios in PAEANs (Public Authorized Enterprize Access Networks) like in e.g. hotels, schools or airport lounges, however, is still in its early stages. The reason for that is the high amount of associated costs, the huge amount of bandwidth requirements for high-quality video combined with the low penetration of broadband access and the leaking Quality of Service support. We proposed Peer-toPeer (P2P) networks as a popular Internet community-driven approach that may partially overcome these major drawbacks. This approach allows each peer in the network to act as a restricted video-server that offers a low number of selected videos to other peers. These decentralized approaches overcome the traditional drawbacks of client-server based solutions. Crucial to the success of this approach, however, is a intelligent content replication strategy that ensures that highly frequented content is replicated across the network. This allows for innovative workload scaling to avoid local bottlenecks and hence enhances the QoS. Furthermore, an architecture is required that allows to transmit this content in quasi realtime. This paper presents a new QoS-oriented architecture for VoD appliances in PAEANs along with enhanced P2P data replication strategies to ensure high content availability and improve workload scaling. It uses true point-to-point communication in order to preserve the on-Demand character of the applications. Keywords: Peer-to-Peer Networks, Quality of Service, Videoon-Demand, MPEG-4, Content Replication MotivationMultimedia content and feature-rich applications like Videoon-Demand (VoD) increasingly become a competitive factor in consumer markets once the major challanges like regular broadband access at affordable costs and increased transmission reliabilty are about to be accomplished. Service Providers convulsively offer these kind of services in PAEANs (Public Authorized Enterprize Networks). PAEANs can be described as homogenous, usually wireless ad-hoc LANs that connect heterogeneous end-devices that access local or global services through a corresponding gateway. We consider PAEANs as networks that feature independent subnets interconnected by routers. Examples for typical PAEANs are airport and station lounges, schools or hotels. VoD is a characteristic service in a PAEAN.Traditionally, Video-on-Demand appliances rely on a typical client-server based architecture where a video server stores content that is on request distributed to demanding clients. Besides the widely known drawbacks of client-server based architectures like sigle points-of-failures and computational and transmission bottlenecks in case the link to the server or the server itself is highly frequented, these architecture exhibit additional disadvantages for service providers On the one hand, video servers are extremely expensive in terms of purchase and maintanance costs as the ...

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“…For the noncontinuous video transport mode, local buffers are equipped in each EO's switch to hold part of the video content. There are several ways to implement the noncontinuous video transport mode, such as via a store-and-forward system [4] and a periodically staggered framing system [5].…”

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confidence: 99%

Distributed interactive video system design and analysis

Wu¹,

Korpeoglu

Cheng³

1997

IEEE Commun. Mag.

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The interactive video (IV) market has been expected t o capture a significant share of the huge potential revenues t o be g business and residential markets. The level of revenues generated depends on the completion rate of calls the service provide support, no matter w h a t the IV system or network condition. Thus, a cost-effective, scalable fault-tolerant IV system is needed t mize the video call completion rate at an affordable cost. This article describes design methodologies f o r a scalable, fault-toler system and an IV system design dnd analysis research prototype called IVSDNA (IV System Designer and Analyzer). The IVSDNA p is designed t o help network planners and engineers t o evaluate quantitative trade-offs (in terms of network communications cos storage costs, and degree of system fault tolerance) between t w o major IV system architectures (centralized and distributed) w variety o f video distribution methods, replication strategies, and fault-tolerant access protocols.

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A store-and-forward architecture for video-on-demand service

Cited by 51 publications

References 3 publications

Distributed servers architecture for networked video services

Distributed servers architecture for networked video services

Improving content replication and QoS in distributed peer-to-peer VoD appliances

Distributed interactive video system design and analysis

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