Method of keeping-alive session and packet control function for the same

• US 20030128676A1
• Filed: 12/31/2002
• Published: 07/10/2003
• Est. Priority Date: 01/09/2002
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Kyung Sook
• Application Number:
  US10/331,639
• Publication Number:
  US 20030128676A1
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04L 12/2856 Access arrangements, e.g. Internet access asynchronous transfer mode networks H04L12/5601; broadband local area networks H04L12/2801; optical access or distribution networks H04Q11/0067; access to open networks H04L12/5691; digital subscriber line end-user equipment and bit-level processing of data on a PSTN-based network H04M11/00; home network gateways H04L12/2834; wireless access networks H04W
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/28 Timers or timing mechanisms used in protocols
• CPC Class Codes: H04L 69/327 in the session layer [OSI layer 5]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04W 76/25 Maintenance of established connections

Abstract

Disclosed is a method of keeping-alive a session and a packet control function for the same. According to the present invention, a packet control function, A packet control function, comprises a packet data control section for generating messages for keeping-alive of a session between a terminal and a network, and a session management section for keeping-alive the session based on the messages.

Claims

1. A packet control function, comprising:

a packet data control section for generating messages for keeping-alive of a session between a terminal and a network; and

a session management section for keeping-alive the session based on the messages.

2. The packet control function of claim 1, wherein the packet data control section generates a message for driving a coupled timer when a resource allocated to the terminal is de-allocated.

3. The packet control function of claim 2, wherein the session management section drives the timer based on the message for driving the coupled timer.

4. The packet control function of claim 3, wherein the packet data control section monitors whether there is data to be transmitted to/from a terminal or to/from a packet data serving node during the driving of the timer.

7. The packet control function of the claim 1, wherein the session management section terminates the session after a predetermined number of requests for the keep-alive.

8. The packet control function of claim 1, wherein the session management section stores registration information related to the session into coupled memory.

5. The packet control function of claim 5, wherein the packet data control section generates a message for stopping a coupled timer when any resource is allocated to the terminal.

6. The packet control function of claim 5, wherein the session management section stops the timer based on the message for stopping the coupled timer.

9. A packet control function, comprising:

a packet data control section for monitoring whether there is data to be transmitted to/from a terminal or to/from a packet data serving node and generating messages for keep-alive of a session between a terminal and a network according to the monitoring result; and

a session management section for releasing and/or connecting the session based on the messages.

10. A method of keeping-alive a session between a terminal and a network in a communication device having a packet data control section and a session management function, comprising:

monitoring whether there is data to be transmitted to/from the terminal or to/from a packet data serving node where the terminal is in an idle mode or dormant mode;

where there is no data, transmitting a message for confirming that a predetermined session is effective or not to the terminal; and

where there is no response to the message, terminating the predetermined session.

11. A method of keeping-alive a session between a terminal and a network in a communication device having a packet control function and a session management function, comprising:

storing registration information related to newly established session;

generating a message for stopping a timer for keep-alive of the established session; and

stopping the timer based on the message.

12. A method of keeping-alive a session between a terminal and a network in a communication device having a packet control function and a session management function, comprising:

generating a first message for driving a timer for keep-alive of a predetermined session when a connection between the terminal, the network, and the communication device is released by a request of the terminal;

driving the timer based on the first message and monitoring whether there is data to be transmitted to/from the terminal or to/from a packet data serving node; and

adjusting the keep-alive of the predetermined session according to the monitoring result.

13. The method of claim 12, wherein monitoring whether there is data to be transmitted to/from a terminal or to/from a packet data serving node where the terminal is in an idle mode or dormant mode.

14. The method of claim 12, the adjusting step further comprising the steps of:

where there is no data, transmitting a second message for confirming that the predetermined session is effective or not to the terminal; and

where there is no response to the second message, terminating the predetermined session.

15. A method of keeping-alive a session between a terminal and a network in a communication device having a packet control function and a session management function, comprising:

establishing a connection between the terminal, the network, and the communication device by request of a packet data serving node;

generating a message for stopping a timer for keep-alive of a predetermined session after the establishing step; and

stopping the timer based on the message.

16. The method of claim 15, wherein the terminal is in an idle mode or dormant mode.

17. A session keep-alive control method in a mobile communication network, having a Access Terminal, an access network, a packet control function (PCF), and a packet data serving node (PDSN), for supporting a packet data service, the method comprising the steps of:

establishing a session between the AT and the access network, and registering information of the established session in the PCF;

starting driving of a timer for a keep-alive function at the PCF;

after a connection between the mobile station and the access network is established, transmitting a connection setup request message for the mobile station to the PCF at the access network;

transmitting a connection setup completion message for informing completion of the requested connection setup to the access network at the PCF;

stopping the driving of the timer for the keep-alive function at the PCF; and

transmitting/receiving desired packet data through a connection path set between the mobile station and the PDSN.

18. The method of claim 17, further comprising the step of:

when a radio resource allocated to the mobile station is de-allocated after the packet data transmitting/receiving step, starting the driving of the timer for the keep-alive function at the PCF.

19. The method of claim 17, wherein when a radio resource is allocated to the mobile terminal and the access terminal receives a packet data transmitting/receiving service after the packet data transmitting/receiving step, stopping the driving of the timer for the keep-alive function at the PCF.