Linking of bearer and control for a multimedia session

• US 20030214958A1
• Filed: 04/14/2003
• Published: 11/20/2003
• Est. Priority Date: 04/12/2002
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Greene, Nancy M., Bishai, Nadia, Madour, Lila
• Application Number:
  US10/412,307
• Publication Number:
  US 20030214958A1
• Time in Patent Office: Days
• US Class Current: 370/401
• CPC Class Codes: H04L 12/14 Charging , metering or billing arrangements for data wireline or wireless communications
• CPC Class Codes: H04L 63/0281 Proxies
• CPC Class Codes: H04L 63/0892 by using authentication-authorization-accounting [AAA] servers or protocols
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1073 Registration or de-registration
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

The present invention relates to a method for linking control and bearer for a multimedia session in an ALL-IP network, and to an Access Gateway (AGW) and an Authentication, Authorization, and Accounting (AAA) server therefore. For doing so, a Mobile IP Request message is received at the AGW from a terminal. The AGW requests authentication of the terminal at the AAA server. The AAA server allocates a Proxy Session Control Manager (P-SCM) for the terminal. Then, the AAA sends an identity of the P-SCM to the AGW, and stores the identity of the allocated P-SCM for the terminal.

Claims

1. A method for linking control and bearer for a multimedia session in an ALL-IP network, the method comprising steps of:

receiving at an Access Gateway (AGW) a Mobile IP Request message from a terminal;

requesting by the AGW authentication of the terminal at an Authentication, Authorization, and Accounting (AAA) server;

allocating at the AAA a Proxy Session Control Manager (P-SCM) for the terminal;

sending from the AAA an identity of the P-SCM to the AGW; and

storing at the AGW the identity of the allocated P-SCM for the terminal.

2. The method of claim 1, wherein the Mobile IP request message is sent in an Authentication/Authorization request message from the AGW to a Local-AAA.

3. The method of claim 1, wherein the step of allocating further comprises a step of:

using an algorithm and the Mobile IP request for determining the identity of the P-SCM.

4. The method of claim 1, wherein the identity of the P-SCM is sent from the AAA to the AGW in an Authentication/Authorization Response message.

5. The method of claim 1, further comprising a step of sending from the AGW to the terminal the identity of the P-SCM in a Mobile IP Registration Reply message.

6. An Access Gateway (AGW) for storing an identity of a Proxy-Session Control manager (P-SCM), the AGW being capable of:

receiving a Mobile IP request from a terminal;

forwarding the Mobile IP request to an AAA in an Authentication/Authorization Request message;

receiving an Authentication/Authorization Response message from the AAA, the message including an identity of a P-SCM allocated for the terminal; and

storing the identity of the P-SCM in an internal memory.

7. The AGW of claim 6, wherein the AGW is further capable of sending the identity of the allocated P-SCM to the terminal.

8. The AGW of claim 6, wherein the AGW is further capable of:

detecting a bearer loss for the terminal in an ALL-IP network;

informing the P-SCM allocated for the terminal using the stored identity of the P-SCM; and

correlating charging information for the terminal.

9. The AGW of claim 6, wherein the AGW is further capable of:

receiving a Change of Authorization (COA) message from the AAA;

updating an internal memory of the AGW.

10. An Authentication, Authorization, and Accounting (AAA) server for allocating a Proxy Session Control Manager (P-SCM) to a terminal, the AAA being capable of:

receiving an Authentication/Authorization Request message from an Access Gateway, the Authentication/Authorization Request message including a Mobile IP Request received from the terminal;

using the Mobile IP Request and an attribute of the AAA, allocating the P-SCM; and

informing the Access Gateway of the allocated P-SCM for the terminal.

11. The AAA of claim 10, wherein the AAA is further capable of:

forwarding the Authentication/Authorization Request message to a Home-AAA of the terminal; and

receiving an Authentication/Authorization Response message from the Home-AAA.