Method and apparatus for executing a communication session between two terminals

• US 20060013148A1
• Filed: 06/22/2005
• Published: 01/19/2006
• Est. Priority Date: 07/05/2004
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Burman, Bo, Einarsson, Torbjorn
• Application Number:
  US11/158,339
• Publication Number:
  US 20060013148A1
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1083 In-session procedures
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related
• CPC Class Codes: H04L 65/756 adapting media to device capabilities
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/24 Negotiation of communication capabilities
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 8/20 Transfer of user or subscriber data

Abstract

A method and apparatus for determining session parameters for a communication session between a first terminal (A) and a second terminal (B). At least the first terminal has stored at least one default set of session parameters. An identifier (404) corresponding to a proposed default set of session parameters is sent from the first terminal to the second terminal. Then, it is determined whether the second terminal accepts the proposed default set of session parameters or not. If accepted (406), the proposed default set of session parameters is retrieved in order to execute the session (408). Otherwise, the terminals fall back to a regular session setup procedure. In this way, delays and bandwidth consumption can be substantially reduced by using a minimum of messaging between the two terminals.

Claims

1. A method of determining session parameters to be used during a communication session between a first terminal and a second terminal, wherein at least the first terminal has stored at least one default set of session parameters, the method comprising the following steps:

A) sending from the first terminal to the second terminal an identifier corresponding to a proposed default set of session parameters,

B) determining whether the second terminal accepts the proposed default set of session parameters or not, and

C) retrieving the proposed default set of session parameters in order to execute the session based on the retrieved parameters, if the second terminal has accepted the proposed default set of session parameters, or

D) falling back to a regular session setup procedure if the second terminal has not accepted the proposed default set of session parameters.

2. A method according to claim 1, wherein the session parameters are determined to establish a new session.

3. A method according to claim 1, wherein the session parameters are determined to re-negotiate parameters for an ongoing session.

4. A method according to claim 1, wherein the session is a multimedia session.

5. A method according to claim 1, wherein the default set identifier is included in a session initiating message sent from the first terminal to the second terminal, said message further including at least one specific session parameter as normally occurring in a regular first session setup message.

6. A method according to claim 5, wherein an acknowledging message is received from the second terminal, in response to the session initiating message.

7. A method according to claim 6, wherein the first terminal determines whether the second terminal accepts the proposed default set of session parameters or not by monitoring the behaviour of the second terminal after receiving the acknowledging message.

8. A method according to claim 7, wherein the session is executed if the second terminal starts to send media indicating that the proposed default set of session parameters has been accepted.

9. A method according to claim 7, wherein, if the second terminal continues signalling according to a regular setup procedure indicating that the proposed default set of session parameters has not been accepted, said regular session setup procedure is executed by using the exchanged session initiating message as the first session setup message.

10. A method according to claim 1, wherein messages of the ITU-T standard H.324 are used in the method.

11. A method according to claim 10, wherein the default parameters set identifier is included in a TCS message.

12. A first terminal capable of determining session parameters to be used during a communication session with a second terminal, wherein the first terminal has stored at least one default set of session parameters, and comprises:

means for sending to the second terminal an identifier corresponding to a proposed default set of session parameters,

means for determining whether the second terminal accepts the proposed default set of session parameters or not, and

means for retrieving the proposed default set of session parameters in order to execute the session based on the retrieved parameters, if the second terminal has accepted the proposed default set of session parameters, and

means for falling back to a regular session setup procedure if the second terminal has not accepted the proposed default set of session parameters.

13. A terminal according to claim 12, wherein the first terminal is adapted to send a session initiating message including the default set identifier, and further including at least one specific session parameter as normally occurring in a regular first session setup message.

14. A terminal according to claim 13, wherein the first terminal is adapted to determine whether the second terminal accepts the proposed default set of session parameters or not by monitoring the behaviour of the second terminal.

15. A terminal according to claim 14, wherein the first terminal is adapted to execute a regular session setup procedure by using the exchanged session initiating message as the first session setup message, if the second terminal has not accepted the proposed default set of session parameters.

16. A terminal according to claim 12, wherein the first terminal is adapted to use the ITU-T standard H.324.