The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Para alcançar alta disponibilidade ponta a ponta na rede de transporte óptico nacional em milhares de edifícios de escritórios, é importante tornar cada função redundante de maneira adequada e executar comutação de proteção, reparar funções com falha e recuperar a redundância para evitar múltiplas falhas simultâneas. A alta redundância leva a altos custos do sistema e alto consumo de energia, e condições restritas para recuperação levam a altos custos de manutenção. Portanto é importante otimizar o equilíbrio entre redundância e condição de manutenção com base em indicadores de disponibilidade apropriados. Anteriormente propusemos um mecanismo de controle de pool de recursos para uma rede de transporte óptico nacional que pode otimizar o equilíbrio. Este artigo propõe um esquema de avaliação de disponibilidade ponta a ponta para uma rede de transporte óptico nacional com nosso mecanismo, pelo qual os operadores de rede podem projetar a quantidade de recursos do pool de cada função e as condições de manutenção para cada área da rede de maneira adequada para satisfazer o fim- requisito de disponibilidade final. Embora as condições de manutenção sejam geralmente discutidas com base nos tempos de recuperação de falhas, elas devem ser discutidas com base nos volumes baseados em custo ou carga para este projeto. Este artigo propõe um esquema de avaliação de carga de operação de manutenção, que deriva o número necessário de membros da equipe de manutenção a partir dos tempos de recuperação de falhas. Também discutimos o desenho da quantidade de recursos do pool e das condições de manutenção para cada área de rede de uma rede nacional com base nos esquemas de avaliação propostos.
Yoshihiko UEMATSU
NTT Network Service Systems Laboratories
Shohei KAMAMURA
NTT Network Service Systems Laboratories
Hiroshi YAMAMOTO
NTT Network Service Systems Laboratories
Aki FUKUDA
NTT Network Service Systems Laboratories
Rie HAYASHI
NTT Network Service Systems Laboratories
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Yoshihiko UEMATSU, Shohei KAMAMURA, Hiroshi YAMAMOTO, Aki FUKUDA, Rie HAYASHI, "End-to-End Redundancy and Maintenance Condition Design for Nationwide Optical Transport Network" in IEICE TRANSACTIONS on Communications,
vol. E101-B, no. 11, pp. 2267-2276, November 2018, doi: 10.1587/transcom.2017EBP3454.
Abstract: To achieve high end-to-end availability in nationwide optical transport network across thousands of office buildings, it is important to properly make each function redundant, and execute protection switching, repair failed functions and recover redundancy to prevent multiple simultaneous failures. High redundancy leads to high system cost and high power consumption, and tight conditions for recovery leads to high maintenance cost. Therefore it is important to optimize the balance between redundancy and maintenance condition based on appropriate availability indicators. We previously proposed a resource-pool control mechanism for a nationwide optical transport network that can optimize the balance. This paper proposes an end-to-end availability evaluation scheme for a nationwide optical transport network with our mechanism, by which network operators can design the pool-resource amount of each function and the maintenance conditions for each network area properly to satisfy the end-to-end availability requirement. Although the maintenance conditions are usually discussed based on failure-recovery times, they should be discussed based on cost- or load-based volumes for this design. This paper proposes a maintenance-operation-load evaluation scheme, which derives the required number of maintenance staff members from failure-recovery times. We also discuss the design of the pool-resource amount and maintenance conditions for each network area of a nationwide network based on the proposed evaluation schemes.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2017EBP3454/_p
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@ARTICLE{e101-b_11_2267,
author={Yoshihiko UEMATSU, Shohei KAMAMURA, Hiroshi YAMAMOTO, Aki FUKUDA, Rie HAYASHI, },
journal={IEICE TRANSACTIONS on Communications},
title={End-to-End Redundancy and Maintenance Condition Design for Nationwide Optical Transport Network},
year={2018},
volume={E101-B},
number={11},
pages={2267-2276},
abstract={To achieve high end-to-end availability in nationwide optical transport network across thousands of office buildings, it is important to properly make each function redundant, and execute protection switching, repair failed functions and recover redundancy to prevent multiple simultaneous failures. High redundancy leads to high system cost and high power consumption, and tight conditions for recovery leads to high maintenance cost. Therefore it is important to optimize the balance between redundancy and maintenance condition based on appropriate availability indicators. We previously proposed a resource-pool control mechanism for a nationwide optical transport network that can optimize the balance. This paper proposes an end-to-end availability evaluation scheme for a nationwide optical transport network with our mechanism, by which network operators can design the pool-resource amount of each function and the maintenance conditions for each network area properly to satisfy the end-to-end availability requirement. Although the maintenance conditions are usually discussed based on failure-recovery times, they should be discussed based on cost- or load-based volumes for this design. This paper proposes a maintenance-operation-load evaluation scheme, which derives the required number of maintenance staff members from failure-recovery times. We also discuss the design of the pool-resource amount and maintenance conditions for each network area of a nationwide network based on the proposed evaluation schemes.},
keywords={},
doi={10.1587/transcom.2017EBP3454},
ISSN={1745-1345},
month={November},}
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TY - JOUR
TI - End-to-End Redundancy and Maintenance Condition Design for Nationwide Optical Transport Network
T2 - IEICE TRANSACTIONS on Communications
SP - 2267
EP - 2276
AU - Yoshihiko UEMATSU
AU - Shohei KAMAMURA
AU - Hiroshi YAMAMOTO
AU - Aki FUKUDA
AU - Rie HAYASHI
PY - 2018
DO - 10.1587/transcom.2017EBP3454
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2018
AB - To achieve high end-to-end availability in nationwide optical transport network across thousands of office buildings, it is important to properly make each function redundant, and execute protection switching, repair failed functions and recover redundancy to prevent multiple simultaneous failures. High redundancy leads to high system cost and high power consumption, and tight conditions for recovery leads to high maintenance cost. Therefore it is important to optimize the balance between redundancy and maintenance condition based on appropriate availability indicators. We previously proposed a resource-pool control mechanism for a nationwide optical transport network that can optimize the balance. This paper proposes an end-to-end availability evaluation scheme for a nationwide optical transport network with our mechanism, by which network operators can design the pool-resource amount of each function and the maintenance conditions for each network area properly to satisfy the end-to-end availability requirement. Although the maintenance conditions are usually discussed based on failure-recovery times, they should be discussed based on cost- or load-based volumes for this design. This paper proposes a maintenance-operation-load evaluation scheme, which derives the required number of maintenance staff members from failure-recovery times. We also discuss the design of the pool-resource amount and maintenance conditions for each network area of a nationwide network based on the proposed evaluation schemes.
ER -