Keep-alive handling in a wireless network

• US 8,077,657 B2
• Filed: 03/22/2007
• Issued: 12/13/2011
• Est. Priority Date: 03/19/2007
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Venkatachalam, Muthaiah, Taaghol, Pouya
• Primary Examiner(s): Shedrick, Charles
• Application Number:
  US11/726,515
• Publication Number:
  US 20080232288A1
• Time in Patent Office: 1,727 Days
• Field of Search: 370/392, 370/349, 709/204
• US Class Current: 370/328
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 67/145 avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
• CPC Class Codes: H04L 67/56 Provisioning of proxy services store-and-forward switching systems in data switching networks H04L12/54
• CPC Class Codes: H04L 67/59 Providing operational support to end devices by off-loading in the network or by emulation, e.g. when they are unavailable
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• CPC Class Codes: H04W 76/25 Maintenance of established connections
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 88/18 Service support devices; Network management devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Briefly, in accordance with one or more embodiments, in wireless network, keep-alive type packets may be received from a remote application for a mobile station. A determination may be made whether the mobile station is in an idle mode. If the mobile station is in an idle mode, a determination may be made whether a port in a keep-alive type packet is recognized. If the port is recognized, an application server may respond to the keep-alive type packet on behalf of the mobile station so that the mobile station is not required to exit the idle mode to respond to the keep-alive type packets.

Claims

1. A method, comprising:

receiving a packet at an application server from a remote application for a mobile station, the application server acting as a proxy for the mobile station, and the received packet comprising a keep-alive packet;

determining at the application server if the mobile station is in an idle mode, the mobile station not actively communicating with a base station when the mobile station is in the idle mode;

if the remote station is in the idle mode, determining at the application server whether a port in the packet is recognized; and

if the port is recognized, responding to the packet by the application server on behalf of the mobile station.

2. A method as claimed in claim 1, further comprising, if the port in the packet is not recognized, paging the mobile station by the application server and forwarding the packet by the application server to the mobile station for handling of the packet by the mobile station.

3. A method as claimed in claim 1, wherein responding to the packet comprises providing a response to the packet by the application server to the remote application so that the response appears to have come from the mobile station.

4. A method as claimed in claim 1, wherein responding to the packet comprises providing a response to the packet by the application server to the remote application so that the response appears to have come from the mobile station by including an Internet Protocol address of the mobile station, or the media access control address of the mobile station, or combinations thereof.

5. A method as claimed in claim 1, wherein responding to the packet comprises providing a response to the packet by the application server to the remote application so that the response appears to have come from the mobile station by providing the response in accordance with a client application to the remote application.

6. A method as claimed in claim 1, further comprising, if the mobile station is not in the idle mode, forwarding the packet by the application server to the mobile station for handling of the packet by the mobile station.

7. A method as claimed in claim 1, if the mobile station is in the idle mode, updating a status of the mobile station as in the idle mode, and storing an Internet Protocol address of the mobile station, or the media access control address of the mobile station, or combinations thereof, for handling responses to packets received from the mobile station.

8. An article of manufacture comprising a non-transitory storage medium having machine-readable instructions stored thereon that, if executed, result in the handling of packets received from a remote application, by:

receiving a packet at an application server from a remote application for a mobile station, the application server acting as a proxy for the mobile station, and the received packet comprising a keep-alive packet;

determining at the application server if the mobile station is in an idle mode, the mobile station not actively communicating with a base station when the mobile station is in the idle mode;

if the remote station is in the idle mode, determining at the application server whether a port in the packet is recognized; and

if the port is recognized, responding to the packet by the application server on behalf of the mobile station.

9. An article of manufacture as claimed in claim 8, wherein the instructions, if executed, further result in the handling of packets received from a remote application, by:

if the port in the packet is not recognized, paging the mobile station by the application server and forwarding the packet by the application server to the mobile station for handling of the packet by the mobile station.

10. An article of manufacture as claimed in claim 8, wherein responding to the packet comprises providing a response to the packet by the application server to the remote application so that the response appears to have come from the mobile station.

11. An article of manufacture as claimed in claim 8, wherein responding to the packet comprises providing a response to the packet by the application server to the remote application so that the response appears to have come from the mobile station by including an Internet Protocol address of the mobile station, or the media access control address of the mobile station, or combinations thereof.

12. An article of manufacture as claimed in claim 8, wherein responding to the packet comprises providing a response to the packet by the application server to the remote application so that the response appears to have come from the mobile station by providing the response in accordance with a client application to the remote application.

13. An article of manufacture as claimed in claim 8, wherein the instructions, if executed, further result in the handling of packets received from a remote application, by:

if the mobile station is not in the idle mode, forwarding the packet by the application server to the mobile station for handling of the packet by the mobile station.

14. An article of manufacture as claimed in claim 8, wherein the instructions, if executed, further result in the handling of packets received from a remote application, by:

if the mobile station is in the idle mode, updating a status of the mobile station as in the idle mode; and

storing an Internet Protocol address of the mobile station, or the media access control address of the mobile station, or combinations thereof, for handling responses to packets received from the mobile station.

15. An apparatus, comprising:

a home agent capable of receiving packets for a mobile station from a remote application; and

an application server coupled to said home agent, said application server being capable of determining whether the mobile station is in an idle mode and responding to the packets on behalf of the mobile station if the mobile station is in the idle mode, the application server acting as a proxy for the mobile station, and the mobile station not actively communicating with a base station when the mobile station is in the idle mode, and the received packets comprising keep-alive packets.

16. An apparatus as claimed in claimed in claim 15, further comprising a foreign agent capable of receiving the packets from said home agent if the mobile station is not within range of a home network of the mobile station, said foreign agent being further capable of forwarding the packets to said application server for handling by said application server if said foreign agent recognizes a port in the packets.

17. An apparatus as claimed in claimed in claim 15, further comprising a foreign agent capable of receiving the packets from the home agent if the mobile station is not within range of a home network of the mobile station, and a paging controller, said foreign agent being further capable of forwarding the packets to said paging controller for paging of the mobile station and handling of the packets by the mobile station if the foreign agent does not recognize a port in the packets.

18. An apparatus as claimed in claim 15, said home agent being further capable of forwarding the packets to said application server for handling by the application server if said home agent recognizes a port in the packets.

19. An apparatus as claimed in claim 15, further comprising a paging controller, said home agent being further capable of forwarding the packets to said paging controller for paging of the mobile station and handling of the packets by the mobile station if said home agent does not recognize a port in the packets.

20. An apparatus as claimed in claim 15, said home agent comprising one of a connectivity service network, or a packet data serving node, or combinations thereof.

21. An apparatus as claimed in claim 16, said foreign agent comprising an access service network gateway or a mobility management entity, or combinations thereof.

22. An application server, comprising:

a processor;

a storage device coupled to said processor;

and a fiber optic network adapter capable of communicating with said processor and coupling the application server to one or more other network elements in a network;

said storage device having data stored thereon pertaining to a mobile station proximate to the network;

said processor being capable of executing instructions that, if executed, result in the application server determining whether the mobile station is in an idle mode and providing a response to keep-alive packets sent from a remote application to the mobile station, the response being provided by the application server on behalf of the mobile station if the mobile station is in an idle mode, and the mobile station not actively communicating with a base station when the mobile station is in the idle mode.

23. An application server as claimed in claim 22, said storage device comprising a semiconductor-type memory, a polymer-type memory, a phase-change-type memory, or a disk drive-type memory, or combinations thereof.

24. An application server as claimed in claim 22, said storage device having stored thereon one or more formats for a keep-alive response to the keep-alive packets sent from the remote application for one or more applications.

25. An application server as claimed in claim 22, said storage device having stored thereon an Internet Protocol address of a mobile station, or a media access control address of the mobile station, or combinations thereof.

26. An application server as claimed in claim 22, said storage device having stored thereon a state of the mobile station as being in the idle mode or not in the idle mode.

27. An application server as claimed in claim 22, said processor being capable of executing instructions that, if executed, result in the application server providing an acknowledgment in response to receiving an update in a state of the mobile station, and updating the information pertaining to the mobile station stored on said storage device with the state of the mobile station.

28. An application server as claimed in claim 22, said processor being capable of executing instructions that, if executed, result in the application server constructing a keep-alive response to the remote application on behalf of the mobile station, the constructed response including an Internet Protocol address of a mobile station, or a media access control address of the mobile station, or combinations thereof, to appear to the remote application as if the mobile station provide the keep-alive response.