Method and system for voice calls in a wireless local area network (WLAN)

• US 20040095924A1
• Filed: 11/18/2002
• Published: 05/20/2004
• Est. Priority Date: 11/18/2002
• Status: Active Grant

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Holur, Balaji S., Davidson, Kenneth W., Shannon, Michael L.
• Granted Patent: US 7,079,521 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 84/04 Large scale networks; Deep hierarchical networks
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A method and system for providing voice calls in a macro wireless network includes providing at a router of the micro wireless network an interface for communication with a service node of a macro wireless network coupled to the micro wireless network. The interface is of a same type as is used by a radio access network of the macro wireless network to communicate with the service node. A real-time protocol communication path is established from the interface through a voice module of the service node to a public switch telephone network. Voice traffic is communicated to the public switch telephone network through the interface and the real-time protocol path.

Claims

1. A method for providing a voice session in a micro wireless network, comprising:

providing at a router of a micro wireless network an interface for communication with a service node of a macro wireless network coupled to the micro wireless network, the interface of a same type as used by a radio access network of the macro wireless network to communicate with the service node;

establishing a real-time protocol communication path from the interface through a voice module of the service node to a public switched telephone network; and

communicating voice traffic to the public switched telephone network through the interface and the real-time protocol communication path.

2. The method of claim 1, wherein the micro wireless network comprises a wireless local area network (WLAN).

3. The method of claim 1, wherein the macro wireless network comprises a code division multiple access (CDMA) wireless network.

4. The method of claim 1, wherein the interface comprises a packet control function (PCF).

5. The method of claim 1, wherein the service node comprises a packet data serving node (PDSN).

6. The method of claim 1, further comprising at the service node converting the voice traffic from a mobile station format to a network format.

7. A system for providing a voice session in a micro wireless network, comprising:

means for providing at a router of a micro wireless network an interface for communication with a service node of a macro wireless network coupled to the micro wireless network, the interface of a same type as used by a radio access network of the macro wireless network to communicate with the service node;

means for establishing a real-time protocol communication path from the interface through a voice module of the service node to a public switched telephone network; and

means for communicating voice traffic to the public switched telephone network through the interface and the real-time protocol communication path.

8. The system of claim 7, wherein the micro wireless network comprises a wireless local area network (WLAN).

9. The system of claim 7, wherein the macro wireless network comprises a code division multiple access (CDMA) wireless network.

10. The system of claim 7, wherein the interface comprises a packet control function (PCF).

11. The system of claim 7, wherein the service node comprises a packet data serving node (PDSN).

12. The system of claim 7, further comprising means at the service node for converting the voice traffic from a mobile station format to a network format.

13. A system for providing a voice session in a micro wireless network, comprising:

logic encoded media; and

the logic operable to communicate between a micro wireless network and a service node of a macro wireless network coupled to the micro wireless network through an interface of a same type as used by a radio access network of the macro wireless network to communicate with the service node, to establish a real-time protocol communication path from the interface through a voice module of the service node to a public switched telephone network and to communicate voice traffic to the public switched telephone network through the interface and the real-time protocol communication path.

14. The system of claim 13, wherein the micro wireless network comprises a wireless local area network (WLAN).

15. The system of claim 13, wherein the macro wireless network comprises a code division multiple access (CDMA) wireless network.

16. The system of claim 13, wherein the interface comprises a packet control function (PCF).

17. The system of claim 13, wherein the service node comprises a packet data serving node (PDSN).

18. The system of claim 13, the logic further operable at the service node to convert the voice traffic from a mobile station format to a network format.

19. A packet data serving node (PDSN) for a wireless communication system, comprising:

a voice module operable to establish a real-time protocol path between a router of a disjoint micro wireless network and a public switched telephone network; and

a vocoding function operable to convert voice traffic received from the micro wireless network in a real-time protocol path from a mobile node format to a format for communication in a public switched telephone network.

20. The PDSN of claim 19, wherein the micro wireless network comprises a wireless local access network (WLAN).