First Demonstration of Hitless Spectrum Defragmentation using Real-time Coherent Receivers in Flexible Grid Optical Networks

European Conference and Exhibition on Optical Communication ◽

10.1364/eceoc.2012.th.3.d.1 ◽

2012 ◽

Cited By ~ 14

Author(s):

Kyosuke Sone ◽

Xi Wang ◽

Shoichiro Oda ◽

Goji Nakagawa ◽

Yasuhiko Aoki ◽

...

Keyword(s):

Real Time ◽

Optical Networks ◽

Coherent Receivers ◽

Flexible Grid

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Slot assignment strategy to reduce loss of capacity of contiguous‐slot path requests in flexible grid optical networks

Electronics Letters ◽

10.1049/el.2012.4247 ◽

2013 ◽

Vol 49 (5) ◽

pp. 359-361 ◽

Cited By ~ 15

Author(s):

R.C. Almeida ◽

A.F. Santos ◽

K.D.R. Assis ◽

H. Waldman ◽

J.F. Martins‐Filho

Keyword(s):

Optical Networks ◽

Slot Assignment ◽

Assignment Strategy ◽

Flexible Grid

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VON Provisioning Over Co-Existing Fixed/Flexible Grid Optical Networks

10.1364/oecc.2021.t2a.3 ◽

2021 ◽

Author(s):

Xiaosong Yu ◽

Lu Lu ◽

Yongli Zhao ◽

Jie Zhang

Keyword(s):

Optical Networks ◽

Flexible Grid

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RSVP-TE Bilateral-Recursive Region Re-Routing Crankback Mechanism for Large-Scale Optical Networks

Journal of Optical Communications ◽

10.1515/joc-2019-0025 ◽

2019 ◽

Vol 0 (0) ◽

Author(s):

Panke Qin ◽

Jiawei Wang ◽

Jingru Wu

Keyword(s):

Real Time ◽

Optical Networks ◽

Traffic Engineering ◽

Large Scale ◽

Setup Time ◽

Multiprotocol Label Switching ◽

Transmission Scheme ◽

Internet Applications ◽

Time Dynamic ◽

Reservation Protocol

AbstractCloud computing services and real-time Internet applications have spawned a large variety of potential requirements for quality of service (QoS), especially the latency and connection setup time. However, with the optical networks develop toward to larger scale, wider coverage and more users access, conventional resource reservation protocol traffic engineering (RSVP-TE) signal hop by hop transmission scheme cannot meet the requirements of these new applications for real-time dynamic services and fast restoration with long propagation delays. This paper proposes a novel RSVP-TE bilateral-recursive region re-routing crankback mechanism (BRCB) base on distributed path computation element (PCE) for generalized multiprotocol label switching (GMPLS) optical networks. In this mechanism, the backtracking nodes re-route and update the region routing paths which bypass the crankback and re-routing failure nodes when crankback occurs. It not only reduces the influencing factors of the scale of network, signaling crankback position and frequency to path connection setup time, but also avoids the backtracking of teardown messages.

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