A WDM Network Controller With Real-Time Updates of the Physical Layer Abstraction

被引：4

作者：

Zhang, Tianliang ^{[1
]}

Samadian, Azadeh ^{[1
]}

Shakeri, Ali ^{[1
]}

Mirkhanzadeh, Behzad ^{[1
]}

Shao, Chencheng ^{[1
,2
]}

Razo, Miguel ^{[1
]}

Tacca, Marco ^{[1
]}

Ferrari, Alessio ^{[3
]}

Cantono, Mattia ^{[3
,4
]}

Curri, Vittorio ^{[3
]}

Martinelli, Giovanni ^{[5
]}

Galimberti, Gabriele Maria ^{[5
]}

Xia, Tiejun ^{[6
]}

Wellbrock, Glenn ^{[6
]}

Fumagalli, Andrea ^{[1
]}

机构：

[1] Univ Texas Dallas, Richardson, TX 75080 USA

[2] Comtech TeleCommun, Seattle, WA 98121 USA

[3] Polytech Univ Turin, I-10129 Turin, Italy

[4] Google Inc, Mountain View, CA 94043 USA

[5] Cisco Photon, I-20871 Vimercate, Italy

[6] Verizon, Dallas, TX 75224 USA

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2019年 / 37卷 / 16期

基金：

美国国家科学基金会;

关键词：

Quality of transmission; real-time estimation; signal power margin; software defined networking; wavelength division multiplexing; MODEL;

D O I：

10.1109/JLT.2019.2924397

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper describes the implementation of a wavelength division multiplexing network controller that accounts for the varying conditions of the network physical layer in real time. A newly added software module is used to estimate the physical layer quality of transmission (QoT-E) in the form of a single transmission figure of merit for every line span in the network, i.e., the optical signal-to-noise ratio (OSNR) degradation. The estimated OSNR degradation is used to verify lightpath feasibility in the network, and produce optimal routing and wavelength assignment solutions in real time, without the need for a separate network planning tool. The OSNR degradation is estimated without requiring detailed knowledge of the optical components deployed in the network, and consequently the approach is vendor agnostic. The accuracy of the estimated OSNR degradation is assessed experimentally, and its impact on two network-wide performance indicators is studied through simulation.

引用

页码：4073 / 4080

页数：8

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