Method for client-server-based communication over several interfaces and client supporting the method

• US 20070143396A1
• Filed: 12/07/2006
• Published: 06/21/2007
• Est. Priority Date: 12/09/2005
• Status: Abandoned Application

• Current Assignee: BenQ Corporation (Qisda Corporation)
• Original Assignee: BenQ Corporation (Qisda Corporation)
• Inventors: Koora, Kalyan, Naumann, Mirko
• Application Number:
  US11/635,382
• Publication Number:
  US 20070143396A1
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04W 36/0011 for data sessions of end-to-end connection
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration

Abstract

A method for communication between a client (CL) and a server (SV) using a client that is able to use one of at least two interfaces (INTF1, INTF2, . . . , INTFN) and to switch between these interfaces (INTF1, INTF2, . . . , INTFN) during a communication session. The client (CL) uses a local proxy (LSP) to take care of appropriate re-registration with the server (SV) when the client switches between two interfaces (INTF1, INTF2, . . . , INTFN).

Claims

1. A method of communicating between a client and a server, the method comprising:

carrying on a communication session between the client and the server through a first interface;

switching from the first interface to a second interface during the communication session; and

re-registering the client with the server when switching from the first interface to the second interface the re-registering being taken care of using a local proxy at the client.

2. The method of claim 1, wherein the local proxy also takes care of modifying messages to avoid any disturbance of the communication session caused by the switching between the first interface and the second interface.

3. The method of claim 1, wherein a session initiation protocol stack sends its contact details in response to switching from the first interface to the second interface.

4. The method of claim 3, wherein the session initiation protocol stack selects one from a set of available IP addresses.

5. The method of claim 4, wherein selecting comprises selecting a local IP address and wherein the local proxy modifies the message sent by the session initiation protocol stack.

6. The method of claim 5, further comprising transmitting the modified message to the server.

7. The method of claim 1, wherein the server is configured as an IP multimedia subsystem server.

8. The method of claim 7, wherein the local proxy re-registers with the IP multimedia subsystem server.

9. The method of claim 1, wherein the first interface comprises one of a GPRS interface or a WLAN interface and the second interface comprises the other one of a GPRS interface or a WLAN interface.

10. The method of claim 1, wherein the first interface comprises a GPRS interface and the second interface comprises a WLAN interface and wherein the client switches from the GPRS interface to the WLAN interface when it reaches a WLAN service node.

11. The method of claim 1, wherein the first interface comprises a GPRS interface and the second interface comprises a WLAN interface and wherein the client switches from a WLAN interface to a GPRS interface when it leaves the reception area of a WLAN service node.

12. A method for communication between a client and a server, the method comprising:

providing a client that uses one of two or more interfaces and to switch between the two or more interfaces during a communication session; and

at the client, using a local proxy taking care of appropriate re-registration with the server when the client switches between the two or more interfaces.

13. A client for communication with a server, the client comprising:

a first interface;

a second interface; and

a local proxy between the client module and the first and second interfaces;

wherein the client is set up for communication with the server over at least the first interface and the second interface with the ability to switch between these interfaces during a communication session;

wherein the local proxy takes care of re-registration with the server when the client switches between the first interface and the second interface.

14. The client of claim 13, wherein the local proxy also takes care of modifying messages to avoid any disturbance of the communication session caused by the switching between interfaces.

15. The client of claim 14, wherein the first interface comprises a GPRS interface and the second interface comprises a WLAN interface.