Method and apparatus for providing user identity based routing in a wireless communications environment

• US 20040081118A1
• Filed: 10/24/2002
• Published: 04/29/2004
• Est. Priority Date: 10/24/2002
• Status: Active Grant

• Current Assignee: RPX Corporation
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Paul, Sanjoy, Mukherjee, Sarit
• Granted Patent: US 7,426,195 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04W 48/17 Selecting a data network PoA [Point of Attachment]
• CPC Class Codes: H04W 76/11 Allocation or use of connection identifiers
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation

Abstract

A method and apparatus for providing user orientated wireless data services over a wireless communications network to a plurality of mobile nodes. The wireless communications network includes a plurality of packet data servicing nodes (PDSN'"'"'s), a plurality of packet control functions (PCFs), and a PCF-PDSN routing controller (PPRC). The PPRC acts as a single PDSN, as well as a surrogate PCF from the perspective of the PDSNs in the private IP network of the service provider. The PPRC serves to provide user oriented wireless services, as opposed to device orientated services. The method includes receiving a data session request from a mobile node, and initiating a point-to-point connection between a PCF receiving the data session request and a PPRC. The PPRC selects one of the PDSNs, and initiates a point-to-point connection between the PPRC and the selected PDSN. The PPRC splices a point-to-point connection between the receiving PCF and the selected PDSN, and commences a point-to-point data session between the mobile node and the PDSN, wherein IP packets are routed over a public IP network.

Claims

1. A method for providing data services over a wireless communications network, said wireless communications network comprising a plurality of packet data servicing nodes (PDSN'"'"'s), a plurality of packet control functions (PCFs), and a PCF-PDSN routing controller (PPRC), said method comprising:

receiving a data session request from a mobile node;

initiating a point-to-point connection between a PCF receiving said data session request and a PPRC;

selecting one of said plurality of PDSNs;

initiating a point-to-point connection between said PPRC and said selected PDSN;

splicing a point-to-point connection between said receiving PCF and said selected PDSN; and

commencing a point-to-point data session between said mobile node and said PDSN, wherein IP packets are routed over a public IP network.

2. The method of claim 1, wherein initiating said point-to-point connection between said PCF and a PPRC comprises:

initiating an A11 signaling interface connection therebetween; and

initiating an A10 bearer interface connection therebetween.

3. The method of claim 2, wherein initiating said A11 signaling interface connection comprises:

sending a registration request to said PPRC; and

sending a registration reply to said PCF.

4. The method of claim 2, wherein initiating said A10 bearer interface connection comprises:

establishing link control protocol configuration therebetween; and

identifying and authenticating a user identity associated with said data session.

5. The method of claim 4, wherein authenticating said user identity comprises an authentication technique selected from the group comprising CHAP and PAP.

6. The method of claim 1, wherein selecting one of said plurality of PDSNs comprises identifying a PDSN from the plurality of PDSNs having particular service capabilities.

7. The method of claim 1, wherein selecting one of said plurality of PDSNs comprises identifying a PDSN from the plurality of PDSNs having available bandwidth.

8. The method of claim 1, wherein commencing a point-to-point data session further comprises:

selectively decompressing compressed IP packets sent by said PCF receiving said data session request to the selected PDSN; and

selectively compressing IP packets sent by said selected PDSN to said PCF receiving said data session request.

9. A packet control function (PCF)-to-packet data serving node (PDSN) routing control (PPRC) operating in a controller having a processor and memory, for dynamically controlling distribution of packetized information from a wireless communications network over a public IP network, comprising:

a control channel monitor, for initiating and terminating point-to-point protocol (PPP) control messages for a session;

a PPRC manager, for maintaining configuration information, said PPRC manager interfacing with said control channel monitor;

a P-interface processor, for implementing a P-interface of A11 signaling, said P-interface processor interfacing with said PPRC manager;

an R-interface processor, for implementing an R-interface of A11 signaling, said P-interface processor interfacing with said PPRC manager;

a data tunnel splicer, for splicing data sessions between a PCF-PDSN pair for a PPP session; and

an authentication, authorization, and accounting (AAA) client, interfacing with an AAA database of a service provider, said PPRC manager, and said control channel monitor, for authorizing said PPP session.

10. The PPRC of claim 9, further comprising a PPRC-to-PPRC communicator interfacing with said PPRC manager, P-interface processor, and R-interface processor, said PPRC-to-PPRC communicator exchanging control messages to other PPRC'"'"'s using said P-interface and R-interface processors.

11. The PPRC of claim 9, wherein said PPRC resides in a switch, and said PPRC switch is adapted to receive packetized information from a plurality of packet control function (PCF) elements, and route said packetized information from one of said plurality of PCFs to one of a plurality of packet data serving nodes (PDSN).

12. The PPRC of claim 9, further comprising a compression/decompression manager for decompressing compressed IP packets sent by a PCF, and compressing IP packets sent by a PDSN.

13. An apparatus for providing data services over a public IP network, comprising:

at least one radio network controller (RNC) for providing radio access to at least one mobile station;

at least one packet control functions (PCF) respectively interfacing with said at least one RNC;

a plurality of packet data servicing nodes (PDSN) for routing packetized information over said public IP network; and

at least one PCF-PDSN routing controller (PPRC) for dynamically routing said packetized information between one of said at least one of PCFs and one of said plurality of PDSNs.

14. The apparatus of claim 13, wherein said PPRC acts as a PDSN with respect to the at least one PCF.

15. The apparatus of claim 13, wherein said PPRC acts as a PCF with respect to the plurality of PDSNs.

16. The apparatus of claim 13, further comprising:

a first R-P Interface formed between said one of said at least one PCF and said PPRC; and

a second R-P Interface formed between said PPRC and one of said plurality of PDSNs.

17. The apparatus of claim 16, wherein said first and second R-P Interface comprise:

a signaling connection to provide a signaling connection between a PCF and a PDSN for packet data services; and

a path for user traffic between said PCF and said PDSN for said packet data services.

18. The apparatus of claim 17, wherein said signaling connection is provided by user datagram protocol (UDP);

and

said path for user traffic is provided by a generic routing encapsulation (GRE) tunnel.

19. The apparatus of claim 13, wherein said PPRC further comprises:

a table of PDSN P addresses; and

a table of PCF IP addresses,

20. The apparatus of claim 13, wherein each said PCF comprises an IP address of said PPRC, where said IP address of said PPRC acts as a surrogate for a PDSN address.

21. The apparatus of claim 13, wherein said PPRC is a switch disposed between said at least one PCFs and said plurality of PDSNs.

22. The apparatus of claim 13, wherein said PPRC is a controller board, where each PCF is coupled to an individual PPRC controller board

23. The apparatus of claim 13, wherein said PPRC further comprises a compression/decompression manager for selectively decompressing compressed IP packets sent by a PCF to a PDSN, and selectively compressing IP packets sent by a PDSN to a PCF.

24. An apparatus for providing data services over a public IP network, comprising:

at least one radio network controller (RNC) for providing radio access to at least one mobile station;

at least one support general packet radio service (GPRS) support node (SGSN) respectively interfacing with said at least one RNC;

a plurality of gateway GPRS support nodes (GGSNs) for routing packetized information over said public IP network; and

at least one SGSN-GGSN routing controller (SGRC) for dynamically routing said packetized information between one of said at least one of PCFs and one of said plurality of PDSNs.

25. A method for providing data services over a wireless communications network, said wireless communications network comprising a plurality of gateway GPRS support nodes (GGSNs), a plurality of support general packet radio service (GPRS) support node (SGSN), and a SGSN-GGSN routing controller (SGRC), said method comprising:

receiving a data session request from a mobile node;

initiating a point-to-point connection between a SGSN receiving said data session request and a SGRC;

selecting one of said plurality of GGSNs;

initiating a point-to-point connection between said SGRC and said selected GGSN;

splicing a point-to-point connection between said receiving SGSN and said selected GGSN; and

commencing a packet data protocol data session between said mobile node and said GGSN, wherein IP packets are routed over a public IP network.