SYSTEM AND METHOD FOR DATA PACKET TRANSPORT IN HYBRID WIRELESS COMMUNICATION SYSTEM

• US 20070237111A1
• Filed: 06/04/2007
• Published: 10/11/2007
• Est. Priority Date: 12/14/2001
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Jain, Nikhil, Parekh, Nileshkumar
• Granted Patent: US 8,483,124 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 88/14 Backbone network devices
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

Computer data is transferred between a CDMA radio access network and a GSM core infrastructure using a switch that acts on the CDMA side as a packet data serving node (PDSN) element and on the GSM side as a serving GPRS service node (SGSN) element. Switching message sequences and protocol stacks are disclosed.

Claims

1. A switch for supporting wireless communication, comprising:

a first element communicating with a code division multiple access (CDMA) radio access network (RAN) using CDMA protocol; and

a second element communicating with a GSM core infrastructure using GSM protocol, the first and second elements communicating with each other, whereby use of the CDMA RAN with the GSM core infrastructure is facilitated.

2. The switch of claim 1, wherein the first element is a packet data serving node (PDSN) element.

3. The switch of claim 1, wherein the second element is a serving GPRS service node (SGSN) element.

4. The switch of claim 3, wherein the SGSN element communicates with a gateway GPRS service node (GGSN).

5. The switch of claim 2, wherein the PDSN element communicates with a CDMA base station controller (BSC).

6. The switch of claim 1, wherein the switch transfers computer data between the CDMA RAN and GSM core infrastructure.

7. The switch of claim 1, wherein the switch terminates point-to-point protocol (PPP) framing from the CDMA RAN and sends Internet Protocol (IP) to the GSM core infrastructure in response to selection of IP by a user of a CDMA mobile station communicating with the CDMA RAN.

8. A method for facilitating the use of a CDMA RAN with a GSM core infrastructure, comprising steps of:

terminating point-to-point protocol (PPP) framing from the CDMA RAN and sending Internet Protocol (IP) to the GSM core infrastructure in response to selection of IP by a user of a CDMA mobile station communicating with the CDMA RAN; and

initiating packet data protocol (PDP) context activation including specifying at least one access point name from the CDMA mobile station.

9. The method of claim 8, further comprising initiating PDP context activation including specifying at least one access point name from a GSM home location registry (HLR).

10. The method of claim 8, wherein the terminating step and the initiating step are performed using a switch having a packet data serving node (PDSN) element communicating with the CDMA RAN using CDMA protocol and a serving GPRS service node (SGSN) element communicating with the GSM core infrastructure using GSM protocol, the elements of the switch communicating with each other.

11. The method of claim 8, further comprising encapsulating IP from the GSM core infrastructure in point-to-point protocol (PPP) framing and transmitting the PPP to a CDMA mobile station in response to selection of IP by a user of the CDMA mobile station

12. The method of claim 8, wherein PDP context activation is initiated without changing a CDMA standard used by the mobile station.

13. A method for facilitating the use of a CDMA RAN with a GSM core infrastructure, comprising steps of:

terminating point-to-point protocol (PPP) framing from the CDMA RAN and sending Internet Protocol (IP) to the GSM core infrastructure in response to selection of IP by a user of a CDMA mobile station communicating with the CDMA RAN; and

initiating packet data protocol (PDP) context activation including specifying at least one access point name from a GSM home location registry (HLR).

14. The method of claim 13, wherein the initiating step is performed using existing CDMA messages.

15. The method of claim 13, wherein the terminating step and the initiating step are performed using a switch having a packet data serving node (PDSN) element communicating with the CDMA RAN using CDMA protocol and a serving GPRS service node (SGSN) element communicating with the GSM core infrastructure using GSM protocol, the elements of the switch communicating with each other.

16. A wireless data communication system, comprising:

a CDMA RAN;

a GSM core infrastructure; and

at least one switch interconnecting the CDMA RAN and GSM core infrastructure, the at least one switch receiving and transmitting computer data using CDMA protocol to the CDMA RAN, the at least one switch receiving and transmitting computer data using GSM protocol to the GSM core infrastructure.

17. The wireless data communication system of claim 16, wherein the at least one switch includes a first element communicating with the CDMA RAN and a second element communicating with the GSM core infrastructure.

18. The wireless data communication system of claim 17, wherein the first element is a packet data serving node (PDSN) element.

19. The wireless data communication system of claim 17, wherein the second element is a serving GPRS service node (SGSN) element.

20. The wireless data communication system of claim 19, further comprising at least one gateway GPRS service node (GGSN) communicating with the SGSN element.

21. The wireless data communication system of claim 16, wherein the at least one switch terminates point-to-point protocol (PPP) framing from the CDMA RAN and sends Internet Protocol (IP) to the GSM core infrastructure in response to selection of IP by a user of a CDMA mobile station communicating with the CDMA RAN.