Management of flexible grid and supercarriers in optical networks using a data model

• US 10,200,770 B2
• Filed: 04/04/2018
• Issued: 02/05/2019
• Est. Priority Date: 04/07/2017
• Status: Active Grant

• Current Assignee: Ciena Corporation
• Original Assignee: Ciena Corporation
• Inventors: Swinkels, Gerard L., Prakash, Anurag, Boertjes, David W., Miedema, David, Chen, Edward, Ibach, Trevor J., Richens, Dominic
• Primary Examiner(s): Singh, Dalzid E
• Application Number:
  US15/944,892
• Publication Number:
  US 20180295429A1
• Time in Patent Office: 307 Days
• Field of Search: 398 48
• CPC Class Codes: H04J 14/0212 using optical switches or wavelength selective switches [WSS]
• CPC Class Codes: H04J 14/02122 Colourless, directionless or contentionless [CDC] arrangements
• CPC Class Codes: H04J 14/0213 Groups of channels or wave bands arrangements
• CPC Class Codes: H04J 14/0257 Wavelength assignment algorithms
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 11/0062 Network aspects
• CPC Class Codes: H04Q 2011/0075 Wavelength grouping or hierarchical aspects
• CPC Class Codes: H04Q 2011/0086 Network resource allocation, dimensioning or optimisation

Abstract

A method of managing optical services in a node in an optical network utilizing a flexible grid includes utilizing a Media Channel (MC) Trail Termination Point (TTP) to model frequency allocation of a MC on the node; utilizing a Network Media Channel (NMC) Connection Termination Point (CTP) to model a specific port for an optical channel corresponding to the NMC; utilizing a NMC cross connection (CRS) to model a path of the NMC in the MC; and programming hardware in the node based on the MC TTP, the NMC CTP, and the NMC CRS.

Claims

1. A method of managing optical services in a node utilizing a flexible grid for optical spectrum, the method comprising:

utilizing a Media Channel (MC) Trail Termination Point (TTP) to model frequency allocation of a MC on the node;

utilizing a Network Media Channel (NMC) Connection Termination Point (CTP) to model a specific port for an optical channel corresponding to the NMC;

utilizing a NMC cross connection (CRS) to model a path of the NMC in the MC; and

programming hardware in the node based on the MC TTP, the NMC CTP, and the NMC CRS.

2. The method of claim 1, wherein the MC TTP allocates bandwidth in physical media comprising a Wavelength Selective Switch (WSS) passband with provisions for deadbands to account for roll off in the WSS.

3. The method of claim 1, wherein the NMC CTP models termination points as one of filtered ports and unfiltered ports for the optical channel.

4. The method of claim 1, wherein the NMC CRS further models a frequency assignment of the NMC.

5. The method of claim 1, further comprising:

utilizing an NMC Controller (NMCC) object and Spectrum Shape Control (SSC) object for control of the optical channel with the hardware.

6. The method of claim 5, wherein the NMCC is aligned to optical spectrum of the NMC which does not necessarily align to control granularity of the hardware and wherein the SSC is aligned to the control granularity of the hardware.

7. The method of claim 5, wherein the programming utilizes the NMCC and the SSC for control of the hardware and the MC TTP, the NMC CTP, and the NMC for allocation of the optical channel through the hardware.

8. The method of claim 1, further comprising:

utilizing a control plane object for modeling the NMC as a routed entity in a control plane.

9. The method of claim 1, further comprising:

utilizing a Virtual Connection Point (VCP) as a termination point to aggregate multiple hardware modules into one or more MCs.

10. The method of claim 1, further comprising:

utilizing a Flexible Cross Connect (FCC) to manage connectivity to the NMC CTP.

11. An apparatus configured to manage optical services in a node utilizing a flexible grid, the apparatus comprising:

circuitry configured to utilize a Media Channel (MC) Trail Termination Point (TTP) to model frequency allocation of a MC on the node;

circuitry configured to utilize a Network Media Channel (NMC) Connection Termination Point (CTP) to model a specific port for an optical channel corresponding to the NMC;

circuitry configured to utilize a NMC cross connection (CRS) to model a path of the NMC in the MC; and

circuitry configured to program hardware in the node based on the MC TTP, the NMC CTP, and the NMC CRS.

12. The apparatus of claim 11, wherein the MC TTP allocates bandwidth in physical media comprising a Wavelength Selective Switch (WSS) passband with provisions for deadbands to account for roll off in the WSS.

13. The apparatus of claim 11, wherein the NMC CTP models termination points as one of filtered ports and unfiltered ports for the optical channel.

14. The apparatus of claim 11, wherein the NMC CRS further models a frequency assignment of the NMC.

15. The apparatus of claim 11, further comprising:

circuitry configured to utilize an NMC Controller (NMCC) object and Spectrum Shape Control (SSC) object for control of the optical channel with the hardware.

16. The apparatus of claim 15, wherein the NMCC is aligned to optical spectrum of the NMC which does not necessarily align to control granularity of the hardware and wherein the SSC is aligned to the control granularity of the hardware.

17. The apparatus of claim 15, wherein the programming utilizes the NMCC and the SSC for control of the hardware and the MC TTP, the NMC CTP, and the NMC for allocation of the optical channel through the hardware.

18. The apparatus of claim 11, further comprising:

circuitry configured to utilize a control plane object for modeling the NMC as a routed entity in a control plane.

19. A node configured to manage optical services in an optical network utilizing a flexible grid, the node comprising:

one or more optical ports;

a Wavelength Selective Switch (WSS) coupled to the one or more optical ports; and

a controller configured to

utilize a Media Channel (MC) Trail Termination Point (TTP) to model frequency allocation of a MC,

utilize a Network Media Channel (NMC) Connection Termination Point (CTP) to model a specific port for an optical channel corresponding to the NMC,

utilize a NMC cross connection (CRS) to model a path of the NMC in the MC, and

program the one or more optical ports and the WSS based on the MC TTP, the NMC CTP, and the NMC CRS.

20. The node of claim 19, wherein the MC TTP allocates bandwidth in physical media comprising a Wavelength Selective Switch (WSS) passband with provisions for deadbands to account for roll off in the WSS.