System and method for control of packet data serving node selection in a mobile internet protocol network

• US 7,346,684 B2
• Filed: 01/31/2003
• Issued: 03/18/2008
• Est. Priority Date: 01/31/2003
• Status: Expired due to Term

• Current Assignee: UTStarcom Incorporated (UTStarcom Holdings Corp.)
• Original Assignee: UTStarcom Incorporated (UTStarcom Holdings Corp.)
• Inventors: Borella, Michael S.
• Primary Examiner(s): Flynn; Nathan
• Assistant Examiner(s): Patel; Ashok
• Application Number:
  US10/355,468
• Publication Number:
  US 20040153525A1
• Time in Patent Office: 1,873 Days
• Field of Search: 718/105, 455/517, 455/509, 455/446, 455/436, 455/410, 455/433, 455/422.1, 455/432, 455/419, 455/550.1, 455/556.2, 455/403, 455/440, 455/411, 455/434, 455/437, 455/418, 455/425, 455/461, 370/338, 370/401, 370/310, 370/328, 370/912
• US Class Current: 709/225
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]
• CPC Class Codes: H04W 88/005 Data network PoA devices

Abstract

A system and methods are shown for selecting a packet data serving node (PDSN) for a mobile node in an Internet Protocol network. A network node receives a message associated with a mobile node. The message includes a service request parameter corresponding to a requested service. The network node uses the service request parameter to select the address of a packet data serving node (PDSN) offering the service. The network node then sends a response message directing a connection with the selected PDSN. The service request parameter may be an international mobile subscriber identifier (IMSI) that identifies a subscriber requesting a static IP address, in which case the network node directs a connection with a PDSN that offers an. Internet connection with the static IP address.

Claims

1. A method of selecting a PDSN (Packet Data Serving Node) for a mobile station, wherein the mobile station has a communication link with a PCF (Packet Control Function), the method comprising:

sending an A11 registration request message from the PCF to a control node, wherein the A11 registration request message includes an identifier of the mobile station;

receiving the A11 registration request message at the control node and, in response, based on the identifier of the mobile station, selecting a PDSN that offers a static IP service for the mobile station;

sending an A11 registration denial message from the control node to the PCF, wherein the registration denial message includes an address of the selected PDSN;

receiving the A11 registration denial message at the PCF and, in response, establishing an R-P connection between the PCF and the selected PDSN;

providing an NAI (Network Access Identifier) of the mobile station to the selected PDSN;

based on the NAI, selecting a predetermined static IP address of the mobile station; and

providing for the mobile station a network connection wherein the mobile station is addressed with a static IP address.

2. A method according to claim 1, wherein the registration denial message includes registration denial code 136.

3. A method according to claim 1, wherein the control node is a foreign agent control node.

4. A method of providing a static IP address for a mobile station having an IMSI (International Mobile Subscriber Identifier) and an NAI (Network Access Identifier), wherein the mobile station has a first communication link with a PCF (Packet Control Function), the method comprising:

based on the IMSI of the mobile station, selecting a PDSN (Packet Data Serving Node) that offers a static IP service for the mobile station;

after selecting the PDSN, establishing a second communication link between the mobile station and the selected PDSN, wherein establishing the second communication link includes providing the NAI of the mobile station to the PDSN;

based on the NAI of the mobile station, identifying a predetermined static IP address of the mobile station; and

providing for the mobile station a network connection wherein the mobile station is addressed with the predetermined static IP address.

5. A method according to claim 4, wherein establishing the second communications link includes establishing an R-P connection between the PCF and the selected PDSN.

6. A method according to claim 5, wherein establishing the second communication link includes establishing a PPP session between the mobile station and the PDSN.

7. A method according to claim 4, wherein establishing the second communication link includes establishing a PPP session between the mobile station and the PDSN.

8. A method according to claim 4, wherein the step of selecting a PDSN is performed by a foreign agent control node.

9. A method according to claim 4, further comprising, in response to the selection of a PDSN that offers a static IP service for the mobile station, sending a registration denial message to the radio node, wherein the registration denial message includes an address of the selected PDSN.