A class-of-service oriented packet scheduling (COPS) algorithm for EPON-based access networks

Naser, Hassan; Mouftah, Hussein T.

doi:10.1109/icton.2005.1505793

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…In the considered e/m-Learning scenario, QoS priority-based dynamic profiles in wireless multimedia networks are considered. These techniques (Naser, H., 2005, Song, S., 2006 allow to assign different priorities to distinct applications, so as to rearrange service quality in a dynamic way (Kamosny, D., 2006) and guarantee the desired performance to data flows. Among such methods, the platform proposed and tested in (De Castro, C., 2011, Toppan, A., 2012) can manage simultaneously two levels of priority: (i) among different users and (ii) within a single user's connection.…”

Section: Proposed Architecturementioning

confidence: 99%

Perceived Quality of Service and Content-based Bandwidth Management in e/m-Learning Smart Environments for the Cultural Heritage

Castro

2014

Proceedings of the 6th International Conference on Computer Supported Education

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Smart Applications for the Cultural Heritage are playing an increasingly fundamental role in several fields, ranging from tourism to home entertainment. E/m-Learning systems are also involved, since advanced contents from the Cultural Heritage can be used in History of Art lessons. For instance, teachers can decide to make students enjoy HQ images or videos of masterpieces, accessed from the Internet. In this context, several problems must be considered, among which an appropriate fruition of such data. In this paper, two specific issues are taken into account: firstly, the so called Perceived Quality of Service (PQoS) in case of visual information; secondly, the case is discussed of high-bandwidth demanding contents accessed in realtime, such as HQ streaming videos. An early architecture is finally proposed for the dynamic management of bandwidth release on the basis of content size and duration.

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Section: Proposed Architecturementioning

confidence: 99%

Perceived Quality of Service and Content-based Bandwidth Management in e/m-Learning Smart Environments for the Cultural Heritage

Castro

2014

Proceedings of the 6th International Conference on Computer Supported Education

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“…This technique [18][19][20] allows to asssign different priorities to distinct applications, so as to rearrange service quality in a dynamic way [21,22] and guarantee the desired performance to a given data flow.…”

Section: Introductionmentioning

confidence: 99%

A Testbed About Priority-Based Dynamic Connection Profiles in QoS Wireless Multimedia Networks

Toppan¹,

Toppan²,

Castro³

et al. 2012

Telecommunications Networks - Current Status and Future Trends

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“…O protocolo ATM foi projetado para atender múltiplos serviços e é bastante usado em redes metropolitanas. Porém, o uso nas redes LAN é restrito [13], [14]. Por outro lado, observou-se a consolidação do domínio do protocolo Ethernet, utilizado amplamente nas redes LAN e ganhando espaço nas redes metropolitanas [15].…”

Section: Tecnologia Em Fibra óPticaunclassified

“…Assim, ele estabelecerá várias políticas para alocar a largura de banda com base em TDM, permitindo que todas as ONUs utilizem o canal uma fração do tempo para realizar sua transmissão livre de colisão. Vários algoritmos de alocação dinâmica de largura de banda (dynamic bandwidth allocation -DBA) foram propostos para EPON [3], [5], [6], [13], [14], [16]- [23].…”

Section: Centralunclassified

Alocação dinâmica de largura de banda em redes EPON

Arbieto¹,

Orencia²

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Telecommunication networks are divided into core, metropolitan and access networks. The core and metropolitan networks use high capacity bandwidth optical fibers, while the access networks have bandwidth bottlenecks because of the use of twisted-pair wires and coaxial cable. To solve this problem and to offers the users broadband access at low cost the use of passive optical networks (PON) is proposed. A PON is formed by two basic elements, the optical network unit (ONU), positioned close to the customers and the optical line terminal (OLT), located close to the service provider. Within the available standards for PON networks, the Ethernet (EPON), standardised by the IEEE group 802.3ah, is an attractive option because it is already widely used in local networks. The multipoint control protocol (MPCP), already specified, is responsible for the media access control, providing signaling infrastructure for transmission between OLT and ONUs. However, the bandwidth allocation algorithm, that controls access based on MPCP, was considered outside the scope of the work group, permitting that this be developed by equipment providers. In this work, EPON architectures and the MPCP protocol are described and bandwidth allocation algorithms are evaluated with computational simulation. Bandwidth allocation algorithms which integrate statistical multiplexing and techniques to support for differentiated classes of service, based on time division multiplexing (TDM) scheme are investigated. Algorithms that integrate wavelength division multiplexing (WDM) to the EPON TDM architecture are also investigated. The WDM-TDM algorithms permit the progressive upgrade of EPON based TDM to WDM schemes.

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A class-of-service oriented packet scheduling (COPS) algorithm for EPON-based access networks

Cited by 5 publications

References 8 publications

Perceived Quality of Service and Content-based Bandwidth Management in e/m-Learning Smart Environments for the Cultural Heritage

Perceived Quality of Service and Content-based Bandwidth Management in e/m-Learning Smart Environments for the Cultural Heritage

A Testbed About Priority-Based Dynamic Connection Profiles in QoS Wireless Multimedia Networks

Alocação dinâmica de largura de banda em redes EPON

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