FRONTHAUL CONTROL DEVICE AND OPERATING METHOD OF FRONTHAUL CONTROL DEVICE, PROGRAM FOR CONTROLLING ALLOCATION OF OPTICAL WAVELENGTH BAND, AND COMPUTER-READABLE RECORDING MEDIUM ONTO WHICH PROGRAM IS RECORDED

• US 20180254846A1
• Filed: 05/13/2016
• Published: 09/06/2018
• Est. Priority Date: 08/28/2015
• Status: Active Grant

• Current Assignee: SK Telecom Co., Ltd.
• Original Assignee: SK Telecom Co., Ltd.
• Inventors: CHOI, Chang Soon, NA, Min Soo
• Granted Patent: US 10,447,421 B2
• Time in Patent Office: Days
• CPC Class Codes: H04J 14/0238 Wavelength allocation for communications one-to-many, e.g. multicasting wavelengths
• CPC Class Codes: H04J 14/0257 Wavelength assignment algorithms
• CPC Class Codes: H04J 2203/0069 Channel allocation
• CPC Class Codes: H04J 3/14 Monitoring arrangements for SDH/SONET rings H04J3/085

Abstract

The present disclosure provides a fronthaul control device which can adjust a center wavelength of an optical signal to changeably control allocation of an optical wavelength band; an operating method of the fronthaul control device; a program for controlling allocation of an optical wavelength band; and a computer-readable recording medium in which the program is recorded.

Claims

1. A fronthaul control device comprising:

a bandwidth identification unit configured to identify a frequency bandwidth of a particular cell among a plurality of cells according to an optical wavelength data rate required for the particular cell;

a center wavelength determination unit configured to determine a center wavelength for allocating the frequency bandwidth of the particular cell; and

an optical wavelength band allocation unit configured to allocate an optical wavelength band to the particular cell on the basis of the center wavelength and the frequency bandwidth of the particular cell,

wherein the center wavelength is determined such that the optical wavelength band allocated to the particular cell is adjacent to an optical wavelength band allocated to at least one of other cells other than the particular cell among the plurality of cells.

2. The fronthaul control device of claim 1, wherein the bandwidth identification unit is configured to identify that the frequency bandwidth of the particular cell becomes narrow when the particular cell is off or when at least one of a plurality of antennas related to the particular cell is off.

3. The fronthaul control device of claim 1, wherein the center wavelength determination unit is configured to determine the center wavelength such that the optical wavelength band to be allocated to the particular cell is included in an optical wavelength band allowing use of an optical amplifier, when a distance between the particular cell and a toll center is equal to or greater than a predetermined value.

4. A computer-readable recording medium comprising a command to perform:

identifying a frequency bandwidth of a particular cell among a plurality of cells according to an optical wavelength data rate required for the particular cell;

determining a center wavelength for allocating the frequency bandwidth of the particular cell; and

allocating an optical wavelength band to the particular cell on the basis of the center wavelength and the frequency bandwidth of the particular cell,

wherein the center wavelength is determined such that the optical wavelength band allocated to the particular cell is adjacent to an optical wavelength band allocated to at least one of other cells other than the particular cell among the plurality of cells.

5. The computer-readable recording medium of claim 4, wherein the identifying comprises identifying that the frequency bandwidth of the particular cell becomes narrow when the particular cell is off or when at least one of a plurality of antennas related to the particular cell is off.

6. The computer-readable recording medium of claim 4, wherein the determining comprises determining the center wavelength such that the optical wavelength band to be allocated to the particular cell is included in an optical wavelength band allowing use of an optical amplifier when a distance between the particular cell and a toll center is equal to or greater than a predetermined value.

7. A program stored in a medium to perform:

identifying a frequency bandwidth of a particular cell among a plurality of cells according to an optical wavelength data rate required for the particular cell;

determining a center wavelength for allocating the frequency bandwidth of the particular cell; and

allocating an optical wavelength band to the particular cell on the basis of the center wavelength and the frequency bandwidth of the particular cell,

wherein the center wavelength is determined such that an optical wavelength band allocated to the particular cell is adjacent to an optical wavelength band allocated to at least one of other cells other than the particular cell among the plurality of cells.