Systems And Methods For Managing A Packet Network

• US 20140269303A1
• Filed: 03/14/2013
• Published: 09/18/2014
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Original Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Inventors: Toy, Mehmet
• Granted Patent: US 10,142,236 B2
• Time in Patent Office: Days
• US Class Current: 370/235
• CPC Class Codes: H04L 43/0852 Delays
• CPC Class Codes: H04L 43/16 Threshold monitoring
• CPC Class Codes: H04L 47/12 Avoiding congestion; Recovering from congestion
• CPC Class Codes: H04L 47/283 in response to processing delays, e.g. caused by jitter or round trip time [RTT]

Abstract

Systems and methods for managing congestion in a network are disclosed. One method can comprise receiving delay information relating to one or more network points wherein the delay information represents one or more of link level delay, connection level delay, and class of service level delay. The method can also comprise comparing delay information to a threshold and if the delay information exceeds the threshold, executing a congestion control process associated with the one or more network points.

Claims

1. A method comprising:

receiving delay information relating to one or more network points, wherein the delay information represents one or more of link level delay, connection level delay, and class of service level delay;

comparing delay information to a threshold; and

when the delay information exceeds the threshold, executing a congestion control process associated with the one or more network points.

2. The method of claim 1, wherein the one or more network points are part of a multipoint-to-multipoint network, a point-to-multipoint, or a point-to-point network.

3. The method of claim 1, wherein the delay information represents one or more of a one-way and round trip point-to-point delay measurement.

4. The method of claim 1, wherein the delay information represents a sliding window delay measurement.

5. The method of claim 1, wherein the one or more network points comprise a network boundary node.

6. The method of claim 1, wherein the one or more network points comprise a user interface, a boundary of a domain of a packet network such as carrier Ethernet network, or a boundary of a domain on a label switched path (LSP) in a multiprotocol label switching (MPLS) network, or a combination thereof.

7. The method of claim 1, wherein the one or more network points comprise an identifier.

8. The method of claim 7, wherein the identifier comprises a maintenance end point, an Internet Protocol address, or a MAC address, or a combination thereof.

9. The method of claim 1, wherein executing a congestion control process comprises modifying one or more of an ingress data rate and an egress data rate based upon a congestion control algorithm.

10. A method comprising:

determining delay information of at least a portion of a point-to-point network, point-to-multipoint network, or a multipoint-to-multipoint network;

providing a threshold crossing alert based on the determined delay information; and

modifying one or more of an ingress data rate and an egress data rate in response to the threshold crossing alert.

11. The method of claim 10, wherein the delay information represents one or more of link level delay, connection level delay, and class of service level delay.

12. The method of claim 10, wherein the delay information represents one or more of a one-way and round trip delay measurement.

13. The method of claim 10, wherein the delay information represents a sliding window delay measurement.

14. The method of claim 10, wherein providing the threshold crossing alert comprises transmitting a congestion control message to one or more points of the point-to-point network, point-to-multipoint, or multipoint-to-multipoint network.

15. The method of claim 10, wherein modifying one or more of an ingress data rate and an egress data rate comprises reducing one or more of an ingress data rate and an egress data rate based upon a congestion control algorithm.

16. A method comprising:

receiving an indication of network delay, the indication relating to a service flow;

determining an effective bandwidth for the service flow; and

modifying one or more of an ingress data rate and an egress data rate associated with the service flow based upon the effective bandwidth determined and in response to the indication of network delay.

17. The method of claim 16, wherein the indication of network delay represents one or more of link level delay, connection level delay, and class of service level delay.

18. The method of claim 16, wherein the indication of network delay represents one or more of a one-way and round trip point-to-point delay measurement.

19. The method of claim 16, wherein the indication of network delay represents a sliding window delay measurement.

20. The method of claim 16, wherein modifying one or more of an ingress data rate and an egress data rate comprises reducing one or more of an ingress data rate and an egress data rate based upon a congestion control algorithm.