TY - JOUR
T1 - Novel Automatic Service Restoration Technique by Using Self-Reconfiguration of Network Resources for a Disaster-struck Metro-Access Network
AU - Kanai, Takuya
AU - Senoo, Yumiko
AU - Asaka, Kota
AU - Sugawa, Jun
AU - Tamai, Hideaki
AU - Saito, Hiroyuki
AU - Minato, Naoki
AU - Oguri, Atsushi
AU - Sumita, Seiya
AU - Sato, Takehiro
AU - Kikuchi, Nobuhiko
AU - Matsushita, Shun Ichi
AU - Tsuritani, Takehiro
AU - Okamoto, Satoru
AU - Yamanaka, Naoaki
AU - Suzuki, Ken Ichi
AU - Otaka, Akihiro
N1 - Funding Information:
Manuscript received October 23, 2017; revised December 15, 2017; accepted December 19, 2017. Date of publication January 11, 2018; date of current version March 1, 2018. This work was supported in part by the National Institute of Information and Communications Technology of Japan. (Corresponding author: Takuya Kanai.) T. Kanai, Y. Senoo, K. Asaka, K. Suzuki, and A. Otaka are with the NTT Access Network Service Systems Laboratories, NTT Corporation, Yokosuka-shi 239-0847, Japan (e-mail: kanai.takuya@lab.ntt.co.jp; senoo.yumiko@lab.ntt. co.jp; asaka.kota@lab.ntt.co.jp; suzuki.kenichi@lab.ntt.co.jp; ootaka.akihiro@ lab.ntt.co.jp).
Publisher Copyright:
© 2017 IEEE.
PY - 2018/4/15
Y1 - 2018/4/15
N2 - This paper shows the concept of the elastic lambda aggregation network (EλAN) that will achieve an elastic common access infrastructure for the metro-access network. It proposes a service restoration technique that uses optical path switching and intercentral office handover for EλAN to recover from disasters. The feasibility of the proposed service restoration technique is successfully demonstrated for the first time by using a prototype testbed of a metro-access network. By applying both orthogonal frequency division multiplexing and adaptive modulation, the system automatically changes the transmission parameters (modulation level, the number of subcarriers, and symbol rate) according to the service requirements and conditions of the optical distribution network, such as the link's end-to-end optical loss, in order to achieve accommodate multiple services. In the experiment, an optical network unit in a faulted system automatically reconnected within 10 s to another office 20-km away with the same throughput.
AB - This paper shows the concept of the elastic lambda aggregation network (EλAN) that will achieve an elastic common access infrastructure for the metro-access network. It proposes a service restoration technique that uses optical path switching and intercentral office handover for EλAN to recover from disasters. The feasibility of the proposed service restoration technique is successfully demonstrated for the first time by using a prototype testbed of a metro-access network. By applying both orthogonal frequency division multiplexing and adaptive modulation, the system automatically changes the transmission parameters (modulation level, the number of subcarriers, and symbol rate) according to the service requirements and conditions of the optical distribution network, such as the link's end-to-end optical loss, in order to achieve accommodate multiple services. In the experiment, an optical network unit in a faulted system automatically reconnected within 10 s to another office 20-km away with the same throughput.
KW - Adaptive modulation
KW - elastic
KW - metro-access network
KW - optical access network
KW - orthogonal frequency division multiplexing (OFDM)
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U2 - 10.1109/JLT.2017.2787999
DO - 10.1109/JLT.2017.2787999
M3 - Article
AN - SCOPUS:85041232544
VL - 36
SP - 1516
EP - 1523
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
SN - 0733-8724
IS - 8
ER -