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You searched for subject:(End system multicast). Showing records 1 – 3 of 3 total matches.

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1. Silva, Hélio Alexandre Dias da. Multiple Multicast Trees for media distribution.

Degree: 2014, Instituto Politécnico de Castelo Branco

Dissertação apresentada à Escola Superior de Tecnologia do Instituto Politécnico de Castelo Branco e Instituto de Telecomunicações para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Desenvolvimento de Software e Sistemas Interativos, realizada sob a orientação científica do Professor adjunto Doutor Osvaldo Santos, do Instituto Politécnico de Castelo Branco.

Com a implementação massiva dos acessos de banda larga nos utilizadores, e com o aumento da capacidade dos dispositivos, o paradigma de rede P2P tem vindo a ganhar consistência e terreno comparativamente à típica tecnologia cliente-servidor. Na maioria dos países modernos as ligações à Internet têm capacidade suficiente para libertar as capacidades que o P2P pode oferecer em aplicações como, video-on-demand ou televisão em tempo real. É sabido que o uso de sistemas baseados em P2P para distribuir conteúdos sensíveis a atrasos pode levantar questões técnicas associadas à instabilidade do sistema causado pela entrada e saída de clientes. Neste relatório é proposto uma plataforma para distribuir conteúdos 3D, sensíveis a atrasos, utilizando um sistema híbrido cliente servidor e P2P hibrido. A plataforma proposta utiliza ao nível da aplicação P2P tecnologia do tipo múltiplas árvores na rede de acesso, delegando as típicas ações de servidor aos super-peers que estão distribuídos geograficamente. Esta proposta utiliza uma nova arquitetura de controlo para tirar proveito dos recursos da Internet para alimentar as técnicas de QoS rigorosas de forma escalável. Os resultados são baseados em testes efetuados em laboratório e mostram uma rápida reação nos clientes.

With the massive deployment of broadband access to the end-users and the improved hardware capabilities of end devices, peer-to-peer (P2P) networking paradigm is consistently gaining terrain over the typical client-server approach. In most of the modern countries, today’s Internet connectivity has sufficient conditions to unleash P2P applications such as video-on-demand or real-time television. It is known that the use of P2P based systems to distribute delay sensitive applications raises technical problems mainly associated with the system’s instability caused by the peer churn effect. In this report, we propose a framework to distribute delay sensitive 3D video content using a hybrid client-server and P2P approach. The proposed framework uses P2P application-level multicast trees at the access networks, delegating typical server operations at super-peers who are domain and geographically distributed. The approach uses a new control architecture to take advantage of the Internet to meet stringent QoS demands in a scalable manner. Results based on real testbed implementation show quick reaction at peer level.

Advisors/Committee Members: Santos, Osvaldo Arede dos, Rodriguez Gonzalez, Jonathan.

Subjects/Keywords: Peer-to-peer; Application-level multicast; End-system multicast; Content distribution

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Silva, H. A. D. d. (2014). Multiple Multicast Trees for media distribution. (Thesis). Instituto Politécnico de Castelo Branco. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipcb.pt:10400.11/2492

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Silva, Hélio Alexandre Dias da. “Multiple Multicast Trees for media distribution.” 2014. Thesis, Instituto Politécnico de Castelo Branco. Accessed May 08, 2021. https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipcb.pt:10400.11/2492.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Silva, Hélio Alexandre Dias da. “Multiple Multicast Trees for media distribution.” 2014. Web. 08 May 2021.

Vancouver:

Silva HADd. Multiple Multicast Trees for media distribution. [Internet] [Thesis]. Instituto Politécnico de Castelo Branco; 2014. [cited 2021 May 08]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipcb.pt:10400.11/2492.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Silva HADd. Multiple Multicast Trees for media distribution. [Thesis]. Instituto Politécnico de Castelo Branco; 2014. Available from: https://www.rcaap.pt/detail.jsp?id=oai:repositorio.ipcb.pt:10400.11/2492

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of Florida

2. Harsh, Piyush. A Distributed Approach to Multicast Session Discovery, mDNS - a Globally Scalable Multicast Session Directory Architecture.

Degree: PhD, Computer Engineering - Computer and Information Science and Engineering, 2010, University of Florida

This dissertation addresses the issue of multicast session discovery by an end user. IP Multicast has tremendous network bandwidth utilization benefits over conventional data transmission strategies. Use of multicast could prove cost effective for many Content Distribution Networks (CDN). From an end user perspective, accessing a live stream using multicast will result in better video reception quality compared to the unicast transmission. This being imposed largely due to limited line bandwidth being shared among several competing data streams. Still the deployment is very sparse in the Internet. One of the reasons is less user demand due to lower usability compared to IP unicast. The supporting network infrastructure that was deployed after standardization of TCP protocol helped tremendously in improving the usability of IP unicast. The Domain Name Service (DNS) infrastructure allowed users to access target hosts using a Fully Qualified Domain Name (FQDN) string against using the dotted decimal IP addresses. Since the unicast IP addresses were allotted in a regulated manner and because of the longevity of assignments, it became easier to search and locate resources on the Internet. Lack of such infrastructure support has deprived multicast its usability from an end user perspective. More importantly, shared nature of multicast addresses and the short life of address use and frequent reuse from the common pool makes it difficult to search and discover content by the end user. This dissertation provides a distributed hierarchical architecture that efficiently addresses some of the usability issues raised above. The tree hierarchy closely co-located with the DNS infrastructure allows the presented scheme to assign Universal Resource Identifiers (URIs) for multicast streams that an end user can bookmark. The proposed scheme automatically re-maps the correct session parameters with the URIs in case they change in future. The Distributed Hash Table (DHT) approach for search and discovery of multicast sessions presented in this dissertation uses a tree hierarchy which is more suitable for the task at hand. Many live multicast streams are not replicated, so there is a need to locate the source of the data and therefore the search scheme required is somewhat traditional in nature. The relative instability of many multicast streams and associated session parameters makes many traditional P2P DHT schemes unsuitable for the problems addressed in this work. Simulation results and analytical comparison of the proposed scheme with existing approaches are presented towards the end of this dissertation. A detailed discussion of why several of the existing DHT schemes for keyword search and Session Announcement Protocol (SAP) / Session Discovery Protocol (SDP) based multicast session discovery schemes are unsuitable for the identified problem is presented as well. ( en ) Advisors/Committee Members: Newman, Richard E. (committee chair), Chow, Yuan-Chieh R. (committee member), Chen, Shigang (committee member), Banerjee, Arunava (committee member), Shea, John M. (committee member).

Subjects/Keywords: Bandwidth; Database design; Domain name system; End user searching; End users; Internet; Keyword searching; Keywords; Simulations; Standard deviation; architecture, dht, directory, distributed, geocoding, geotagging, internet, mdns, multicast, networks, overlay, session

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Harsh, P. (2010). A Distributed Approach to Multicast Session Discovery, mDNS - a Globally Scalable Multicast Session Directory Architecture. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0041545

Chicago Manual of Style (16th Edition):

Harsh, Piyush. “A Distributed Approach to Multicast Session Discovery, mDNS - a Globally Scalable Multicast Session Directory Architecture.” 2010. Doctoral Dissertation, University of Florida. Accessed May 08, 2021. https://ufdc.ufl.edu/UFE0041545.

MLA Handbook (7th Edition):

Harsh, Piyush. “A Distributed Approach to Multicast Session Discovery, mDNS - a Globally Scalable Multicast Session Directory Architecture.” 2010. Web. 08 May 2021.

Vancouver:

Harsh P. A Distributed Approach to Multicast Session Discovery, mDNS - a Globally Scalable Multicast Session Directory Architecture. [Internet] [Doctoral dissertation]. University of Florida; 2010. [cited 2021 May 08]. Available from: https://ufdc.ufl.edu/UFE0041545.

Council of Science Editors:

Harsh P. A Distributed Approach to Multicast Session Discovery, mDNS - a Globally Scalable Multicast Session Directory Architecture. [Doctoral Dissertation]. University of Florida; 2010. Available from: https://ufdc.ufl.edu/UFE0041545


Indian Institute of Science

3. Kalapriya, K. On The Issues Of Supporting On-Demand Streaming Application Over Peer-to-Peer Networks.

Degree: PhD, Faculty of Engineering, 2009, Indian Institute of Science

Bandwidth and resource constraints at the server side is a limitation for deployment of streaming media applications. Resource constraints at the server side often leads to saturation of resources during sudden increase in requests. End System Multicast (ESM) is used to overcome the problem of resource saturation. Resources such as storage, bandwidth available at the end systems are utilized to deliver streaming media. In ESM, the end-systems (also known as peers) form a network which is commonly known as Peer-to-Peer (P2P) network. These peers that receive the stream in turn act as routable components and forward the stream to other requests. These peers do not possess server like characteristics. The peers differ from the server in the following ways: (a) they join and exit the system at will (b) unlike servers, they are not reliable source of media. This induces instability in the network. Therefore, streaming media solution over such unstable peer network is a challenging task. Two kinds of media streaming is supported by ESM, namely, live streaming media and on-demand streaming media. ESM is well studied to support live streaming media. In this thesis we explore the effectiveness of using ESM to support on-demand streaming media over P2P network. There are two major issues to support on-demand streaming video.They are: (a)unlike live streaming, every request should be served from the beginning of the stream and (b) instability in the network due to peer characteristics (particularly transience of peers). In our work, late arriving peers can join the existing stream if the initial segments can be served to these peers. In this scheme, a single stream is used to serve multiple requests and therefore the throughput increases. We propose patching mechanism in which the initial segments of media are temporarily cached in the peers as patches. The peers as they join, contribute storage and this storage space is used to cache the initial segments. The patching mechanism is controlled by Expanding Window Control Protocol (EWCP). EWCP defines a “virtual window” that logically represents the aggregated cache contributed by the peers. The window expands as the peer contribute more resources. Larger the window size more is the number of clients that can be served by a single stream. GAP is formed when contiguous segments of media is lost. GAP limits the expansion of the virtual window. We explore the conditions that lead to the formation of GAP. GAP is formed due to the transience and non-cooperation of peers. Transience of peers coupled with real time nature of the application requires fast failure recovery algorithms and methods to overcome loss of media segments. We propose an efficient peer management protocol that provides constant failure recovery time. We explore several redundancy techniques to overcome the problem of loss of video segments during transience of peers. Peer characteristics (duration, resource contribution etc.) have significant impact on performance.The design of peer management protocol must include… Advisors/Committee Members: Nandy, S K (advisor).

Subjects/Keywords: Peer to Peer Networks; P2P Networks; End System Multicast (ESM); On-Demand Streaming Applications; Black Board System; P2P Networks - Clustering Algorithms; Expanding Window Control Protocol (EWCP); Computer Science

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Kalapriya, K. (2009). On The Issues Of Supporting On-Demand Streaming Application Over Peer-to-Peer Networks. (Doctoral Dissertation). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/536

Chicago Manual of Style (16th Edition):

Kalapriya, K. “On The Issues Of Supporting On-Demand Streaming Application Over Peer-to-Peer Networks.” 2009. Doctoral Dissertation, Indian Institute of Science. Accessed May 08, 2021. http://etd.iisc.ac.in/handle/2005/536.

MLA Handbook (7th Edition):

Kalapriya, K. “On The Issues Of Supporting On-Demand Streaming Application Over Peer-to-Peer Networks.” 2009. Web. 08 May 2021.

Vancouver:

Kalapriya K. On The Issues Of Supporting On-Demand Streaming Application Over Peer-to-Peer Networks. [Internet] [Doctoral dissertation]. Indian Institute of Science; 2009. [cited 2021 May 08]. Available from: http://etd.iisc.ac.in/handle/2005/536.

Council of Science Editors:

Kalapriya K. On The Issues Of Supporting On-Demand Streaming Application Over Peer-to-Peer Networks. [Doctoral Dissertation]. Indian Institute of Science; 2009. Available from: http://etd.iisc.ac.in/handle/2005/536

.