System and method for provisioning flows in a mobile network environment

• US 8,599,865 B2
• Filed: 10/26/2010
• Issued: 12/03/2013
• Est. Priority Date: 10/26/2010
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Venkataswami, Balaji Venkat, Subramanian, Kowsalya, Somi Ramasamy Subramanian, Jegan Kumar, Dhayalan, Manikandan, Andhavaram, Rajesh Kumar, Sivasubramanian, Girish
• Primary Examiner(s): Taha, Shaq
• Application Number:
  US12/912,556
• Publication Number:
  US 20120099538A1
• Time in Patent Office: 1,134 Days
• Field of Search: 370/401
• US Class Current: 370/401
• CPC Class Codes: H04L 47/24 Traffic characterised by specific attributes, e.g. priority or QoS
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections

Abstract

An example method is provided and includes receiving a request from a mobile node for an Internet protocol (IP) address and establishing a point-to-point (PPP) link for the mobile node. The method also includes provisioning a first tunnel associated with a first communication flow for the mobile node, and provisioning a sub-tunnel with the first tunnel for a second communication flow. The second communication flow is associated with a high priority type of data to be transported on the sub-tunnel. In more specific embodiments, a call admission control (CAC) mechanism is used to establish the sub-tunnel with the first tunnel for the second communication flow. Additionally, an inner label is installed in a header of a packet associated with the second communication flow in order to identify the sub-tunnel.

Claims

1. A method for managing a first communication flow and a second communication flow in a network environment, the second communication flow associated with voice data and/or video data, comprising:

receiving, at a mobile access gateway, a request from a mobile node for an Internet protocol (IP) address;

establishing a point-to-point (PPP) link between the mobile node and the mobile access gateway;

provisioning a first tunnel associated with the first communication flow for the mobile node between the local mobility anchor of the mobile node and the mobile access gateway, wherein said first tunnel is a guaranteed bandwidth traffic-engineered tunnel; and

applying Quality of Service (QoS) parameters associated with the second communication flow against the guaranteed bandwidth of the first tunnel to ensure the first tunnel has the capacity to carry the second communication flow;

provisioning a sub-tunnel within the first tunnel for transporting the second communication flow, wherein the sub-tunnel consumes a portion of the available bandwidth of the first tunnel.

2. The method of claim 1, wherein a call admission control (CAC) mechanism is used to apply Quality of Service (QoS) parameters associated with the second communication flow against the guaranteed bandwidth of the first tunnel.

3. The method of claim 1, wherein an inner label is installed in a header of a packet associated with the second communication flow in order to identify the sub-tunnel.

4. The method of claim 1, further comprising:

determining whether the second communication flow is associated with voice data or video data based on common characteristics in voice or video communication flows.

5. The method of claim 1, wherein a traffic flow template (TFT) and a packet filter are provisioned for the first communication flow in conjunction with the mobile node roaming into a network.

6. The method of claim 1, wherein an entry in a database is provisioned for the first communication flow, and wherein the entry includes a care of address (CoA) through which the mobile node is reachable.

7. The method of claim 1, wherein an advertisement message is sent to the mobile node to indicate a home address (HoA) associated with the mobile node, and wherein a packet exchange indicates that a CoA is to be associated with the HoA.

8. Logic encoded in one or more non-transitory tangible media that includes code for execution and when executed by a processor operable to perform operations comprising:

receiving, at a mobile access gateway, a request from a mobile node for an Internet protocol (IP) address;

establishing a point-to-point (PPP) link between the mobile node and the mobile access gateway;

provisioning a first tunnel associated with the first communication flow for the mobile node between the local mobility anchor of the mobile node and the mobile access gateway, wherein said first tunnel is a guaranteed bandwidth traffic-engineered tunnel; and

applying Quality of Service (QoS) parameters associated with the second communication flow against the guaranteed bandwidth of the first tunnel to ensure the first tunnel has the capacity to carry the second communication flow;

provisioning a sub-tunnel within the first tunnel for transporting the second communication flow, wherein the sub-tunnel consumes a portion of the available bandwidth of the first tunnel.

9. The logic of claim 8, wherein a call admission control (CAC) mechanism is used to apply Quality of Service (QoS) parameters associated with the second communication flow against the guaranteed bandwidth of the first tunnel.

10. The logic of claim 8, wherein an entry in a database is provisioned for the first communication flow, and wherein the entry includes a care of address (CoA) through which the mobile node is reachable.

11. The logic of claim 8, wherein an inner label is installed in a header of a packet associated with the second communication flow in order to identify the sub-tunnel.

12. The logic of claim 8, wherein the operations further comprises:

determining whether the second communication flow is associated with voice data or video data based on common characteristics in voice or video communication flows.

13. The logic of claim 8, wherein a traffic flow template (TFT) and a packet filter are provisioned for the first communication flow in conjunction with the mobile node roaming into a network.

14. The logic of claim 8, wherein an advertisement message is sent to the mobile node to indicate a home address (HoA) associated with the mobile node, and wherein a packet exchange indicates that a CoA is to be associated with the HoA.

15. A mobile access gateway for managing a first communication flow and a second communication flow in a network environment, the second communication flow associated with voice data and/or video data, the mobile access gateway configured for:

receive, at a mobile access gateway, a request from a mobile node for an Internet protocol (IP) address;

establish a point-to-point (PPP) link between the mobile node and the mobile access gateway;

provision a first tunnel associated with the first communication flow for the mobile node between the local mobility anchor of the mobile node and the mobile access gateway, wherein said first tunnel is a guaranteed bandwidth traffic-engineered tunnel; and

apply Quality of Service (QoS) parameters associated with the second communication flow against the guaranteed bandwidth of the first tunnel to ensure the first tunnel has the capacity to carry the second communication flow;

provision a sub-tunnel within the first tunnel for transporting the second communication flow, wherein the sub-tunnel consumes a portion of the available bandwidth of the first tunnel.

16. The mobile access gateway of claim 15, wherein a call admission control (CAC) mechanism is used to apply Quality of Service (QoS) parameters associated with the second communication flow against the guaranteed bandwidth of the first tunnel.

17. The mobile access gateway of claim 15, wherein an inner label is installed in a header of a packet associated with the second communication flow in order to identify the sub-tunnel.

18. The mobile access gateway of claim 15 is further configured to determine whether the second communication flow is associated with voice data or video data based on common characteristics in voice or video communication flows.

19. The mobile access gateway of claim 15, wherein a traffic flow template (TFT) and a packet filter are provisioned for the first communication flow in conjunction with the mobile node roaming into a network.

20. The mobile access gateway of claim 15, wherein an advertisement message is sent to the mobile node to indicate a home address (HoA) associated with the mobile node, and wherein a packet exchange indicates that a CoA is to be associated with the HoA.