SIP message and processing method thereof in mobile communication system

• US 20060209775A1
• Filed: 03/13/2006
• Published: 09/21/2006
• Est. Priority Date: 03/15/2005
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, Sung-Bum, Lim, Chan-Seok
• Application Number:
  US11/373,240
• Publication Number:
  US 20060209775A1
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04W 76/12 Setup of transport tunnels

Abstract

A method of defining and processing an SIP message of a binary format so as to shorten the call setting time between a server and a terminal which has not acquired a traffic channel and to thus reduce the amount of traffic. The method may comprise a step in which a calling terminal sends an invite message (INVITE) of a binary SIP message format to a server through an access channel; a step in which the server decodes the invite message into a text-based SIP message to check the message; a step in which the server converts the text-based SIP message into an invite message of a binary SIP message and sending the message to a destination terminal through an access channel; and a step in which the destination terminal sends the calling terminal a response message with respect to the invite message.

Claims

1. A session initiation protocol (SIP) message in a wireless communications system in a system in which a text-based SIP message is sent and received through a traffic channel, wherein a message sent between a server and a terminal that has not obtained the traffic channel is a binary SIP message obtained by coding a text-based SIP message to binary codes.

2. The SIP message of claim 1, wherein the binary SIP message is sent from a terminal to a server or from a server to a terminal through an access channel.

3. The SIP message of claim 1, wherein the binary SIP message comprises:

a four-bit field for indicating that a corresponding message is a binary SIP message;

a four-bit field for indicating a message type;

a two-bit field for indicating an application ID;

a two-bit field for indicating a service type;

a 36-bit field for indicating an identifier of an originator;

a 36-bit filed for indicating an identifier of a terminator; and

one or more fields including a random value.

4. The SIP message of claim 3, wherein the field including the random value comprises:

a To Tag field of four-bit;

a From Tag field of four-bit;

a Via Branch field of four-bit; and

a Call ID field of eight-bit.

5. The SIP message of claim 4, wherein the To Tag field is inputted by a destination terminal.

6. The SIP message of claim 4, wherein the From Tag field is inputted by an originator terminal.

7. The SIP message of claim 4, wherein the From Tag field uses the same value as a ‘

Cseq’

value.

8. The SIP message of claim 3, wherein the originator identifying field and the terminator identifying field are expressed as nine-digit numbers, respectively, wherein four bits represents one digit.

9. The SIP message of claim 3, wherein the originator identifying field is a mobile directory number (MDN).

10. The SIP message of claim 9, wherein the originator identifying field comprises the mobile directory number excluding a provider common number.

11. The SIP message of claim 10, wherein if the mobile directory number excluding the provider common number is not a nine-digit number, ‘

F’

is padded from the very first space.

12. The SIP message of claim 3, wherein the terminator identifying field is a mobile directory number (MDN) of a destination terminal in case of an individual ID.

13. The SIP message of claim 12, wherein the terminator identifying field is the mobile directory number excluding a provider common number.

14. The SIP message of claim 3, wherein, in case of a group ID, the terminator identifying field changes digits of the ID into eight digits and ‘

F’

is padded right in front of the eight-digit number.

15. A method for processing an SIP message in a wireless communications system, comprising:

a step in which a terminal that has not obtained a traffic channel sends a binary SIP message to a server through an access channel; and

a step in which the server decodes the binary SIP message into a text-based SIP message.

16. The method of claim 15, wherein the step of decoding the binary SIP message further comprises:

coding the text-based SIP message into a binary SIP message and sending the binary SIP message to the other terminal.

17. The method of claim 16, wherein the binary SIP message is the same as the binary SIP message that the terminal has sent to the server.

18. The method of claim 15, wherein the step in which the terminal sends the binary SIP message further comprises:

sending the binary SIP message and simultaneously starting to set a traffic channel.

19. The method of claim 15, wherein in the step of decoding the binary SIP message, a Via Branch field and a Call ID field are generated by combining fields of the binary SIP message.

20. The method of claim 19, wherein the Via Branch field and the Call ID field comprises:

a uniquely identifiable part; and

a random value part.

21. The method of claim 20, wherein the uniquely identifiable part comprises:

an identifier of an originator of the binary SIP message; and

an identifier of a terminator of the binary SIP message.

22. The method of claim 21, wherein the identifier of the terminator has ten digits by padding ‘

F’

right in front of the terminator identifying field number of the binary SIP message.

23. The method of claim 20, wherein the random value of the Via Branch field is a value of the Via Branch field of the binary SIP message.

24. The method of claim 20, wherein the random value of the Call ID field is a value of the Call ID field of the binary SIP message.

25. A method for processing an SIP message in a wireless communications system, the method comprising:

a step in which a calling terminal sends an invite message (INVITE) of a binary SIP message format to a server through an access channel;

a step in which the server decodes the invite message into a text-based SIP message to check the message;

a step in which the server converts the text-based SIP message into an invite message of a binary SIP message and sending the message to a destination terminal through an access channel; and

a step in which the destination terminal sends the calling terminal a response message with respect to the invite message.

26. The method of claim 25, wherein the step in which the calling terminal sets the invite message further comprises:

a step in which the calling terminal starts to set a traffic channel.

27. The method of claim 25, wherein the step in which the destination terminal sets the response message further comprises:

a step in which if the destination terminal has not obtained a traffic channel, the destination terminal starts to set a traffic channel.

28. The method of claim 27, wherein if the destination terminal has not obtained the traffic channel, the response message is sent as a binary SIP message through an access channel.

29. The method of claim 25, wherein the binary message that the server sends to the destination terminal is the same as a binary SIP message that the calling terminal has sent to the server.

30. The method of claim 25, wherein the step of decoding the binary SIP message generates a Via Branch field and a Call ID field by combining fields of the binary SIP message.

31. The method of claim 30, wherein the Via Branch field and the Call ID field, each comprise:

a uniquely identifiable part; and

a random value part.

32. The method of claim 31, wherein the uniquely identifiable part comprises:

an identifier of an originator of the binary SIP message; and

an identifier of a terminator of the binary SIP message.

33. The method of claim 32, wherein the identifier of the terminator has ten digits by padding ‘

F’

right in front of a terminator identifying field value of the binary SIP message.

34. The method of claim 31, wherein the random value of the Via Branch field is a Via Branch field value of the binary SIP message.

35. The method of claim 31, wherein the random value of the Call ID field is a value of a Call ID field of the binary SIP message.