Method to re-provision bandwidth in P-OTN network based on current traffic demand

• US 10,455,301 B2
• Filed: 06/28/2013
• Issued: 10/22/2019
• Est. Priority Date: 01/17/2013
• Status: Active Grant

• Current Assignee: Infinera Corp.
• Original Assignee: Infinera Corp.
• Inventors: Ahuja, Satyajeet, Pan, Ping, Rao, Rajan, Lu, Biao
• Primary Examiner(s): Payne, David C
• Assistant Examiner(s): Barua, Pranesh K
• Application Number:
  US13/931,439
• Publication Number:
  US 20140199067A1
• Time in Patent Office: 2,307 Days
• Field of Search: 398 47, 398 52, 398 75, 370230, 370468
• CPC Class Codes: H04Q 11/0066 Provisions for optical burst or packet networks

Abstract

A method, comprises measuring, by circuitry of a computer system, a first bandwidth of data traffic of a transport path over a time period, the transport path passing through a plurality of nodes and conforming to a protocol using a number of time slots to allocate a second bandwidth to the transport path. The method further includes passing a signal, from the computer system to at least one of the nodes of the transport path, the signal including at least one instruction that when executed by circuitry of the at least one node causes a change to the number of time slots allocated to the transport path.

Claims

1. A method, comprising the steps of:

measuring, by circuitry of a computer system, a peak of a first bandwidth of data traffic of a transport path over a time period, the transport path passing through a plurality of nodes and conforming to a protocol using a number of time slots to allocate a second bandwidth to the transport path; and

passing a signal, from the computer system to at least one of the nodes of the transport path, the signal including at least one instruction that when executed by circuitry of the at least one node causes a change to the number of time slots allocated to the transport path based upon the measured peak of the first bandwidth of data traffic, wherein the change to the number of time slots is an increase in the number of time slots by an added number of time slots, the signal being a GMPLS label including the added number of time slots to each of a plurality of ODUflex containers.

2. The method of claim 1, wherein the computer system is a component of at least one of the nodes of the transport path.

3. The method of claim 1, wherein the step of passing the signal is responsive to a determination that the first bandwidth differs from the second bandwidth by an amount exceeding a preset threshold.

4. The method of claim 3, wherein the preset threshold is between about 0.1% and about 100%.

5. The method of claim 1, wherein the time period is a first time period, and the method further comprises the step of measuring, by circuitry of the computer system, a third bandwidth of data traffic of the transport path over a second time period, and the step of passing the signal is responsive to a determination that the first bandwidth differs from the third bandwidth by an amount exceeding a preset threshold.

6. The method of claim 5, wherein the preset threshold is between about 0.1% and about 100%.

7. The node of claim 1, wherein the transport path is a Label Switched Path (LSP).

8. A node, comprising:

an input interface for receiving traffic from a first link;

an output interface for transmitting traffic to a second link;

a switch for communicating the traffic from the input interface to the output interface; and

a control module controlling the input interface, the output interface, and the switch, the control module;

measuring a peak of a first bandwidth of data traffic of a transport path over a time period, the transport path passing through a plurality of nodes and conforming to a protocol using a number of time slots to allocate a second bandwidth to the transport path; and

passing a signal, from the node to at least one of the plurality of nodes of the transport path, the signal including at least one instruction that when executed by circuitry of the at least one of the plurality of nodes causes a change to the number of time slots allocated to the transport path based upon the measured peak of the first bandwidth of data traffic, wherein the change to the number of time slots is an increase in the number of time slots by an added number of time slots, the signal being a GMPLS label including the added number of time slots to each of a plurality of ODUflex containers.

9. The node of claim 8, wherein the node passes the signal in response to a determination that the first bandwidth differs from the second bandwidth by an amount exceeding a preset threshold.

10. The node of claim 9, wherein the preset threshold is between about 0.1% and about 100%.

11. The node of claim 8, wherein the time period is a first time period, and wherein the control module further measures a third bandwidth of data traffic of the transport path over a second time period, and passes the signal in response to a determination that the first bandwidth differs from the third bandwidth by an amount exceeding a preset threshold.

12. The node of claim 11, wherein the preset threshold is between about 0.1% and about 100%.

13. The node of claim 8, wherein the transport path is a Label Switched Path (LSP).