Virtual private network over asynchronous transfer mode

• US 7,609,699 B2
• Filed: 10/10/2006
• Issued: 10/27/2009
• Est. Priority Date: 07/19/2001
• Status: Expired due to Fees

• Current Assignee: AT&T Labs Incorporated (AT&T, Inc.)
• Original Assignee: AT&T Labs Incorporated (AT&T, Inc.)
• Inventors: Allen, Keith Joseph, Chen, Weijing, Salguero, Anna
• Primary Examiner(s): LEE, CHI HO A
• Application Number:
  US11/539,908
• Publication Number:
  US 20070086466A1
• Time in Patent Office: 1,113 Days
• Field of Search: 370/395.2, 370/401
• US Class Current: 370/395.2
• CPC Class Codes: H04L 2012/563 Signalling, e.g. protocols, reference model
• CPC Class Codes: H04L 2012/5667 IP over ATM
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections

Abstract

A method for using broadband network resources includes providing simultaneous access to an asynchronous transfer mode switched virtual circuit for a plurality of sessions. The access for each session is provided based on an internet protocol session request being received at a service gateway for the sessions. The method also includes tearing down the asynchronous transfer mode switched virtual circuit when all of the sessions are terminated.

Claims

1. A method for using broadband network resources, comprising:

providing simultaneous access to an asynchronous transfer mode switched virtual circuit for a plurality of sessions based on internet protocol session requests being received at a service gateway for the plurality of sessions, and

tearing down the asynchronous transfer mode switched virtual circuit when all of the sessions are terminated,

wherein a plurality of service gateways are located in different geographical regions and access different directory servers which are loaded with asynchronous transfer mode network addresses for different geographical regions, thereby preventing service gateways in one region from launching asynchronous transfer mode switched virtual circuits to destinations in other regions.

2. The method according to claim 1, further comprising:

retaining the asynchronous transfer mode switched virtual circuit for a predetermined period of time before the asynchronous transfer mode switched virtual circuit connection is torn down.

3. The method according to claim 1, further comprising:

retrieving an asynchronous transfer mode network address of a broadband destination for each session from a directory server.

4. The method according to claim 3,

wherein the directory server is provided with a table which correlates asynchronous transfer mode network addresses with domain names.

5. The method according to claim 4,

wherein the table further includes a connection sharing protocol for each domain name.

6. The method according to claim 4,

wherein the table further indicates whether the session is exclusive for each domain name.

7. The method according to claim 4,

wherein the table further includes whether caller identification, for security purposes, is provided when sessions are established to the destination identified by the domain name.

8. The method according to claim 3,

wherein the service gateway is provided with a database which is updated each time a subscriber logs in and logs out, to internally track existing asynchronous transfer mode switched virtual circuit connections.

9. The method according to claim 1, further comprising:

forwarding, for each session, the session request and subsequent packets to a destination to establish a session over the asynchronous transfer mode switched virtual circuit connection.

10. The method according to claim 1,

wherein the plurality of sessions are established for a single subscriber connected to a plurality of different destinations.

11. The method according to claim 1,

wherein the plurality of sessions are established over the asynchronous transfer mode switched virtual circuit connection for a plurality of subscribers connected to a single destination.

12. The method according to claim 11,

wherein connection sharing is established by multiplexing each of the plurality of sessions onto the asynchronous transfer mode switched virtual circuit connection using one of layer 2 tunneling protocol and point-to-point protocol tunnel aggregation.

13. The method according to claim 1, further comprising:

querying, for each session, a directory server with a domain name.

14. The method according to claim 13, further comprising:

receiving, for each query, the respective asynchronous transfer mode network address, a connection sharing protocol, data on whether the session is exclusive, and whether caller identification for security purposes is provided, for the respective domain name which has been queried.

15. The method according to claim 1,

wherein the service gateway is integrated into a single unit with a fiber terminating device.

16. The method according to claim 1, further comprising:

establishing a permanent virtual connection between subscriber customer premise equipment and the service gateway.

17. A service gateway, comprising:

a first interface to an internet protocol network, and

a second interface configured to provide simultaneous access to an asynchronous transfer mode switched virtual circuit for a plurality of sessions based on internet protocol session requests being received for the plurality of sessions,

wherein the asynchronous transfer mode switched victual circuit is torn down when all of the sessions are terminated, and

wherein a plurality of service gateways are located in different geographical regions and access different directory servers which are loaded with asynchronous transfer mode network addresses for different geographical regions, thereby preventing service gateways in one region from launching asynchronous transfer mode switched virtual circuits to destinations in other regions.

18. A computer readable medium storing a computer program, comprising:

an access providing code segment that provides simultaneous access to an asynchronous transfer mode switched virtual circuit for a plurality of sessions based on internet protocol session requests being received at a service gateway for the plurality of sessions, and

a tearing down code segment that tears down the asynchronous transfer mode switched virtual circuit when all of the sessions are terminated,

wherein a plurality of service gateways are located in different geographical regions and access different directory servers which are loaded with asynchronous transfer mode network addresses for different geographical regions, thereby preventing service gateways in one region from launching asynchronous transfer mode switched virtual circuits to destinations in other regions.