Call localization and processing offloading

• US 8,526,448 B2
• Filed: 10/19/2010
• Issued: 09/03/2013
• Est. Priority Date: 10/19/2010
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Velandy, Rajesh, Ramankutty, Rajesh, Alex, Arun C.
• Primary Examiner(s): Pezzlo, John
• Application Number:
  US12/907,575
• Publication Number:
  US 20120093167A1
• Time in Patent Office: 1,050 Days
• Field of Search: 370/400, 370/401, 370/352, 370/252, 370/466, 370/467
• US Class Current: 370/401
• CPC Class Codes: H04W 76/00 Connection management
• CPC Class Codes: H04W 8/082 for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
• CPC Class Codes: H04W 88/16 Gateway arrangements

Abstract

In one embodiment, a gateway implements: receiving an indication that a first and a second end point of a communication session are both associated with a first gateway, the first gateway in communication with a second gateway to access services; receiving from the first end point at the first gateway a compressed packet; and communicating within the first gateway, the compressed packet from the first end point to the second end point, where the communicating is initiated in response to the indication that the first and second end points of the communication session are both associated with the first gateway, and where the communicated compressed packet is communicated through the first gateway without passing through the second gateway.

Claims

1. A method comprising:

receiving a first indication, for a first and a second user equipment (UE) associated with a first gateway in communication with a second gateway to access services, that the first UE has identified the second UE as a remote endpoint of a first communication session;

receiving a second indication that the second UE has identified the first UE as a remote endpoint of a second communication session;

receiving from the first UE at the first gateway a compressed packet; and

communicating, within the first gateway, the compressed packet from the first UE to the second UE, wherein the communicating is initiated in response to the first indication and the second indication, and wherein the forwarded compressed packet is communicated through the first gateway without passing through the second gateway.

2. The method of claim 1, wherein the first gateway is a high-rate packet data serving gateway (HSGW) and the second gateway is a packet data network gateway (PDN-GW), and wherein a policy and charging rules function (PCRF) node is used to generate the first and second indications.

3. The method of claim 2, wherein the first and second indications are received within one or more policy charging and control (PCC) rules.

4. The method of claim 3, wherein the HSGW is within the same device as a PCRF.

5. The method of claim 1, wherein the compressed packet is compressed using Robust Header Compression.

6. The method of claim 1, further comprising determining that the remote endpoint of the first communication session and the remote endpoint of the second communication session are both associated with the first gateway, wherein the determination is performed at one of a policy and charging rules function (PCRF), a packet data network gateway (PDN-GW), and a high-rate packet data serving gateway (HSGW).

7. The method of claim 6, wherein the identification of the second UE as a remote endpoint of a first communication session, and the identification of the first UE as a remote endpoint of a second communication session, is performed by comparing the IP source and destination of a first Real Time Protocol (RTP) bearer with the IP source and destination of a second RTP bearer.

8. A gateway comprising:

a memory capable of storing data;

a first network interface in communication with a first and a second user equipment (UE);

a second network interface in communication with a second gateway, the second gateway for providing access to services;

and

a processor connected to the first network interface and the second network interface, and configured to forward packets from the first network interface to the second network interface, and configured to use the stored data such that the gateway can;

receive an indication that the first UE has identified the second UE as a remote endpoint of a communication session;

receive from the first UE via the first network interface a compressed packet; and

communicate, within the gateway, the compressed packet from the first UE to the second UE, wherein the communication is initiated in response to the indication that the first UE has identified the second UE as a remote endpoint of a communication session, and wherein the communicated compressed packet is communicated through the first user interface without passing through the second network interface.

9. The gateway of claim 8, wherein the gateway is a high-rate packet data serving gateway (HSGW) and the second gateway is a packet data network gateway (PDN-GW), and wherein a policy and charging rules function (PCRF) node is connected to the HSGW and the PCRF node is configured to generate an indication that the first and the second end point of the communication session are both associated with the first gateway.

10. The gateway of claim 9, wherein the indication that the first and the second end point of the communication session are both associated with the first gateway is received within one or more policy charging and control (PCC) rules.

11. The gateway of claim 10, wherein the HSGW is within the same device as a PCRF.

12. The gateway of claim 8, wherein the compressed packet is compressed using Robust Header Compression.

13. The gateway of claim 8, the processor being further configured to receive an indication that the first and the second end point of a communication session are both associated with the first gateway, wherein the indication is received from one of a policy and charging rules function (PCRF), a packet data network gateway (PDN-GW), and a high-rate packet data serving gateway (HSGW).

14. The gateway of claim 8, wherein the indication that the first UE has identified the second UE as a remote endpoint of a communication session is based upon a comparison of the IP source and destination of a first Real Time Protocol (RTP) bearer with the IP source and destination of a second RTP bearer.

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

receiving a first indication, for a first and a second user equipment (UE) associated with a first gateway in communication with a second gateway to access services, that the first UE has identified the second UE as a remote endpoint of a first communication session;

receiving a second indication that the second UE has identified the first UE as a remote endpoint of a second communication session;

receiving from the first UE at the first gateway a compressed packet; and

communicating, within the first gateway, the compressed packet from the first UE to the second UE, wherein the communicating is initiated in response to the first indication and the second indication, and wherein the forwarded compressed packet is communicated through the first gateway without passing through the second gateway.

16. The logic of claim 15, wherein the first gateway is a high-rate packet data serving gateway (HSGW) and the second gateway is a packet data network gateway (PDN-GW), and wherein a policy and charging rules function (PCRF) node is used to generate the first and second indications.

17. The logic of claim 16, wherein the first and second indications are received within one or more policy charging and control (PCC) rules.

18. The logic of claim 17, wherein the HSGW is within the same device as a PCRF.

19. The logic of claim 15, wherein the compressed packet is compressed using Robust Header Compression.

20. The logic of claim 15, wherein a first and a second indication that the first and the second end point of a communication session are both associated with the first gateway are received from one of a policy and charging rules function (PCRF), a packet data network gateway (PDN-GW), and a high-rate packet data serving gateway (HSGW).