Call processing method during termination busy state of terminal in radio intelligent network system

• US 7,043,245 B2
• Filed: 12/17/2001
• Issued: 05/09/2006
• Est. Priority Date: 12/16/2000
• Status: Expired due to Fees

• Current Assignee: LG-Ericsson Company Limited (Telefonaktiebolaget LM Ericsson)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Dokko, Sehjoon
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): Doan, Kiet
• Application Number:
  US10/015,644
• Publication Number:
  US 20020077101A1
• Time in Patent Office: 1,604 Days
• Field of Search: 455/404.2, 455/433, 455/528, 455/414, 455/63.3, 455/550, 455/560, 455/445, 455/417, 455/414.1, 370/350, 370/58, 370/209.1, 370/207.2, 370/210.1, 370/63, 370/201, 379/230, 379/219, 379/221.08
• US Class Current: 455/445
• CPC Class Codes: H04M 2207/12 intelligent networks
• CPC Class Codes: H04M 2207/18 wireless networks
• CPC Class Codes: H04M 3/424 Arrangements for automatic redialling at the subscriber's set H04M1/27
• CPC Class Codes: H04Q 3/0037 involving call modelling techniques, e.g. modifications to the basic call state model [BCSM]
• CPC Class Codes: H04W 4/16 Communication-related supplementary services, e.g. call-transfer or call-hold
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A call processing method during terminating BUSY states (busy, power down, and paging failure) of a terminal in a radio intelligent network system. The method includes detecting the terminating BUSY state of the terminal from an HLR (Home Location Register); performing an OBUSY operation between a SCP and a T_Busy DP in a T_SSP when the terminating BUSY state is detected; generating an O_BCSM as a result of the operation; and re-attempting a call connect to a termination switch number transmitted to the generated O_BCSM.

Claims

1. A call processing method during a termination BUSY state of a terminal in an intelligent network system comprising:

detecting a termination BUSY state of a terminal from an HLR (Home Location Register);

directly performing an origin BUSY (OBUSY) operation between an SCP (Service Control Point) and a T_Busy DP of an origin SSP (Service Switching Point), after the termination BUSY state is detected without generating a T_BCSM in the origin SSP;

generating an O_BCSM as a result of the OBUSY operation; and

re-attempting a call connect to a termination switch number which is transmitted to the O_BCSM.

2. The method of claim 1, wherein performing the OBUSY operation comprises:

receiving termination BUSY state information and trigger information from the HLR when the termination BUSY state is detected; and

performing the OBUSY operation between the SCP which received the trigger information and the T_Busy DP of the O_SSP.

3. The method of claim 1, wherein re-attempting the call connect comprises:

receiving the termination switch number to the generated O_BCSM;

moving a PIC (Point in Call) to a Resume PIC after the termination switch number is received;

checking whether or not an automatic termination switch is set in the O_BCSM after moving the PIC; and

re-attempting the call connect to the termination switch number which is transmitted to the O_BCSM if the automatic termination switch is set.

4. The method of claim 3, further comprising:

translating the PIC to the Resume PIC, and to an Analyzed_Info PIC.

5. The method of claim 4, wherein the Resume PIC appoints the Analyzed_Info PIC in order to call again to the termination switch number.

6. The method of claim 1, wherein the HLR transmits location information signal, the termination BUSY state information, and the trigger information to the O_SSP.

7. The method of claim 2, wherein the trigger information comprises an O_Busy trigger which represents the busy state of an origin subscriber, an O_No_Page_Response trigger which represents a state that a paging is attempted when the origin subscriber is in a pause state but a response signal is not transmitted, and an O_Unroutable trigger which represents a state that the termination can not be made because of failure of termination occurs during call connecting.

8. The method of claim 3, wherein receiving the termination switch number comprises:

detecting the trigger information on the T_BUSY DP;

transmitting the termination BUSY state signal of the mobile terminal on the terminated side from the T_Busy DP of the O_SSP to the SCP when the trigger information is detected; and

receiving the termination switch number by the OBUSY operation between the SCP which received the termination BUSY state signal and the T_Busy DP.

9. The method of claim 1, wherein the T₁₃ Busy DP detects the trigger information in order of priority.

10. The method of claim 1, wherein an originating BCSM (O_BCSM:

Origin Basic Call State Model) and a terminating BCSM (T_BCSM) in a T_SSP and a T_BCSM in the O_SSP are released.

11. The method of claim 1, further comprising:

generating a new O_BCSM in the O_SSP as a result of the OBUSY operation.

12. The method of claim 11, wherein the O_SSP receives the termination switch number from the SCP as a result of the OBUSY operation.

13. The method of claim 3, wherein the terminal disconnects the call connect if the automatic termination switch is not set.

14. A call processing method during a termination BUSY state of a terminal in a radio intelligent network system comprising:

detecting a termination pause state of a terminal from an HLR (Home Location Register);

checking whether there is a REDREQ (Redirect Request) transmitted from a T_BCSM (Terminating Basic Call State Model) in a T_SSP (Termination Service Switching Point), when the termination pause state is detected;

generating an O_BCSM in an O_SSP (Originating SSP) to process the termination BUSY state if there is the REDREQ, and receiving a termination switch number in the generated O_BCSM

directly notifying an SCP (Service Control Point) of the termination pause state without generating a corresponding T_BCSM in the O_SSP;

checking whether or not an automatic termination switch is set in the O_BCSM (Originating Basic Call State Model); and

re-attempting the call connect if the automatic termination switch is set.

15. The method of claim 14, wherein the terminal disconnects the call connect if the automatic termination switch is not set.

16. The method of claim 14 further comprising:

re-checking whether there is the REDREQ;

generating the T_BCSM from a Send_Call PIC;

receiving the REDREQ from the T_BCSM which received the termination BUSY state information of the mobile terminal on a terminated side from a Select_Facility PIC; and

re-checking whether there is the REDREQ.

17. The method of claim 14, wherein receiving the termination switch number comprises:

receiving a signal which represent that the OBUSY operation can be performed from the T_SSP which received the REDREQ; and

receiving the termination switch number by the OBUSY operation between the SCP which received the above signal and the T_Busy DP of the O_SSP.

18. The method of claim 16, wherein the T_SSP transmits a signal, which represents that the OBUSY operation can be performed, to the O_SSP after the REDREQ is transmitted from the O_SSP.

19. The method of claim 14, wherein re-attempting the call connect comprises:

translating the PIC to a Resume PIC;

translating the PIC to an Analyzed_Info PIC set by the Resume PIC after the translation to the Resume PIC; and

calling again to the termination switch number transmitted from the SCP after the translation to the Analyzed_Info PIC and the OBUSY operation is performed.

20. The method of claim 19, wherein the Resume PIC appoints the Analyzed_Info PIC in order to call again to the termination switch number.

21. The method of claim 14, further comprising:

receiving the termination switch number by the OBUSY operation between the SCP, which received the terminating BUSY state information from the T_Busy DP of the T_SSP, and the T_Busy DP of the SSP after a signal which represents that the OBUSY operation can not be performed is transmitted from the T_SSP which did not receive the REDREQ, if there is not the REDREQ; and

trying to call again to the transmitted termination switch number.

22. A method of processing a termination state of a called terminal, comprising:

detecting the termination state of the called terminal;

generating an Originating Basic Call State Model (O_BCSM) in an Originating Service Switching Point (O_SSP) associated with a calling terminal when the termination state is detected;

transferring a termination state and trigger information for processing the termination state of the called terminal from a Home Location Register (HLR) to the O_BCSM; and

notifying from the O_BCSM to a Service Control Point (SCP) associated with the calling terminal and the called terminal without generating a Terminating BCSM (T_BCSM) in the O_SSP the termination state of the called terminal using the transferred termination state and trigger information.

23. The method of claim 22, wherein the termination state comprises a busy termination state or a pause termination state.

24. The method of claim 22, further comprising:

re-attempting to call connect with the called terminal.

26. The method of claim 22, wherein the trigger information comprises an O_Busy trigger which represents the busy state of an origin subscriber, an O_No_Page_Response trigger which represents a state that a paging is attempted when the origin subscriber is in a pause state but a response signal is not transmitted, and an O_Unroutable trigger which represents a state that the termination can not be made because of failure of termination occurs during call connecting.

25. The method of claim 25, wherein re-attempting to call connect comprises:

receiving the termination switch number to the generated O_BCSM;

moving a PIC (Point in Call) to a Resume PIC after the termination switch number is received;

checking whether or not an automatic termination switch is set in the O_BCSM after moving the PIC; and

re-attempting the call connect to the termination switch number which is transmitted to the O_BCSM if the automatic termination switch is set.