Title:
DEDICATED PROTECTION SPECTRUM ALLOCATION METHOD AND SYSTEM FOR SPACE-DIVISION MULTIPLEXING OPTICAL NETWORK OF DATA CENTER
Document Type and Number:
WIPO Patent Application WO/2023/108715
Kind Code:
A1
Abstract:
The present invention relates to a dedicated protection spectrum allocation method and system for a space-division multiplexing optical network of a data center. In the method in the present invention, firstly, a working path and a dedicated protection path are established for each connection request; secondly, idle spectrum availability values of all fiber cores are calculated according to a spectrum usage condition on each optical fiber link, and the idle spectrum availability values are arranged in descending order, so as to sequentially select the fiber cores; then, under the constraints of spectrum continuity and consistency, an available spectrum block is selected, and a crosstalk value of the spectrum block on each link is calculated; and subsequently, whether the crosstalk value on each link satisfies a crosstalk threshold limitation is determined, and if so, the spectrum block is retained, and spectrum allocation is performed. In this way, the problems of routing calculation, fiber core selection and spectrum allocation based on crosstalk awareness are solved, the spectrum resource efficiency of a space-division multiplexing optical network is improved, and the crosstalk value of each optical fiber link is reduced, such that spectrum resources occupied by a working path and a dedicated protection path, which are established for each connection request, and the crosstalk are optimized.
Inventors:
CHEN BOWEN (CN)
HU JINGWEN (CN)
ZHENG WENWEN (CN)
LIANG RUIXIN (CN)
SHAO WEIDONG (CN)
SHEN GANGXIANG (CN)
GAO MINGYI (CN)
HU JINGWEN (CN)
ZHENG WENWEN (CN)
LIANG RUIXIN (CN)
SHAO WEIDONG (CN)
SHEN GANGXIANG (CN)
GAO MINGYI (CN)
Application Number:
PCT/CN2021/140055
Publication Date:
June 22, 2023
Filing Date:
December 21, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
H04Q11/00
Foreign References:
| CN113630671A | 2021-11-09 | |||
| CN110769335A | 2020-02-07 | |||
| CN106992810A | 2017-07-28 | |||
| CN113742046A | 2021-12-03 | |||
| CN108696777A | 2018-10-23 | |||
| US20140016939A1 | 2014-01-16 |
Other References:
QING-CHENG ZHU, CHEN BO-WEN, FU XIAO-DONG: "Crosstalk-Aware Dedicated Protection Approaches based on Service Bandwidth Classification", STUDY ON OPTICAL COMMUNICATIONS, no. 216, 26 November 2019 (2019-11-26), pages 5 - 9, 57, XP093072074
Attorney, Agent or Firm:
CENTRAL SOUTH WELL INTELLECTUAL PROPERTY OFFICE (CN)
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