Call set-up in mobile communications system

• US 6,466,786 B1
• Filed: 07/21/1999
• Issued: 10/15/2002
• Est. Priority Date: 12/04/1996
• Status: Expired due to Term

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Telecommunications Oy (Nokia Corporation)
• Inventors: Wallenius, Jukka
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): Ferguson, Keith
• Application Number:
  US09/319,516
• Time in Patent Office: 1,182 Days
• Field of Search: 455/432, 455/433, 455/435, 455/422, 455/440, 455/404, 455/527, 455/445, 455/403, 455/412, 455/414, 455/424, 455/425, 455/9, 455/517, 455/512, 455/521, 455/550, 455/552
• US Class Current: 455/433
• CPC Class Codes: H04M 3/436 Arrangements for screening incoming calls , i.e. evaluating the characteristics of a call before deciding whether to answer it based on the calling party profile H04M3/42059; based on location H04M3/42348; based on presence H04M3/42365; diversion H04M3/54
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor

Abstract

In a call set-up method a called mobile station is checked upon routing an incoming call to see if incoming calls are barred. In prior art call set-up an incoming call barring prevents the routing of all calls destined to the mobile station. The call set-up method of the present invention is characterized by bypassing the incoming call barring in the case of a priority call. The invention also relates to a mobile communications system comprising a first subscriber register for permanent storage of subscriber data and a second subscriber register for temporary storage of subscriber data. Incoming call barring is set in subscriber data. The mobile communications system of the invention is characterized by the system begin arranged to bypass the incoming call barring in the case of a priority call.

Claims

1. A call set-up method in a mobile communications system, in which method a called mobile station is checked upon routing an incoming call to see if incoming call barring is activated, the method comprising the steps of

checking whether the call set-up signaling contain a priority call identifier,

bypassing the checking of the incoming call barring or a possible incoming call barring on the basis of said identifier upon routing of the priority call, and

connecting a call to a called mobile station.

2. A method as claimed in claim 1, in order to bypass the incoming call barring, the method further comprises the steps of:

attaching the priority call identifier to a routing information inquiry message and

bypassing the incoming call barring in a home location register on the basis of the identifier upon routing of the priority call.

3. A method as claimed in claim 2, in order to bypass the incoming call barring, the method further comprises the steps of:

attaching the priority call identifier to a call routing message

attaching the priority call identifier to a subscriber data inquiry message, and

bypassing the incoming call barring in a visitor location register on the basis of said identifier upon routing of the priority call.

4. A method as claimed in claim 3, in order to bypass the incoming call barring, the method further comprises the steps of:

attaching the priority call identifier to a call set-up message

attaching the priority call identifier to speech connection set-up message, and

bypassing the incoming call barring in a mobile station on the basis of said identifier upon routing of the priority call.

5. A method as claimed in claim 4, in order to connect a call to a call to a called mobile station, the method further comprising the step of

selecting a mobile station alarm signal on the basis of said identifier.

6. A method as claimed in claim 2, in order to bypass the incoming call barring, the method further comprises the steps of:

attaching the priority call identifier to a call set-up message

attaching the priority call identifier to speech connection set-up message, and

bypassing the incoming call barring in a mobile station on the basis of said identifier upon routing of the priority call.

7. A method as claimed in claim 6, in order to connect a call to a call to a called mobile station, the method further comprises the step of

selecting a mobile station alarm signal on the basis of said identifier.

8. A method as claimed in claim 1, in order to bypass the incoming call barring, the method further comprises the steps of:

attaching the priority call identifier to a call routing message

attaching the priority call identifier to a subscriber data inquiry message, and

bypassing the incoming call barring in a visitor location register on the basis of said identifier upon routing of the priority call.

9. A method as claimed in claim 8, in order to bypass the incoming call barring, the method further comprises the steps of:

attaching the priority call identifier to a call set-up message

attaching the priority call identifier to speech connection set-up message, and

bypassing the incoming call barring in a mobile station on the basis of said identifier upon routing of the priority call.

10. A method as claimed in claim 9, in order to connect a call to a call to a called mobile station, the method further comprises the step of

selecting a mobile station alarm signal on the basis of said identifier.

11. A method as claimed in claim 1, in order to bypass the incoming call barring, the method further comprises the steps of:

attaching the priority call identifier to a call set-up message

attaching the priority call identifier to speech connection set-up message, and

bypassing the incoming call barring in a mobile station on the basis of said identifier upon routing of the priority call.

12. A method as claimed in claim 11, in order to connect a call to a called mobile station, the method further comprises the step of

selecting a mobile station alarm signal on the basis of said identifier.

13. A method as claimed in claim 1, further comprising the step of recognizing the priority call on the basis of subscriber A'"'"'s subscriber class.

14. A method as claimed in claim 1, further comprising the step of recognizing the priority call on the basis of subscriber A'"'"'s number.

15. A method as claimed in claim 1, further comprising the step of comparing, in order to recognize the priority call, said identifier with a predefined identifier list.

16. A mobile communications system comprising a first subscriber register for permanent storage of subscriber data and a second subscriber register for temporary storage of subscriber data, in which subscriber data incoming call barring is set, the mobile communications system being arranged

to attach a priority call identifier to call set-up signaling,

to bypass the incoming call barring on the basis of said identifier upon routing of the priority call, and

to connect the call to the called mobile station.

17. A mobile communications system as claimed in claim 16, wherein the home location register of the mobile communications system is arranged to bypass the incoming call barring on the basis of said identifier upon routing of the priority call.

18. A mobile communications system as claimed in claim 17, wherein the visitor location register is arranged to bypass the incoming call barring on the basis of the identifier upon routing of the priority call.

19. A mobile communications system as claimed in claim 16, wherein the visitor location register is arranged to bypass the incoming call barring on the basis of the identifier upon routing of the priority call.

20. A mobile communications system as claimed in claim 16, wherein the incoming call barring is set at a mobile station and the mobile station is arranged to bypass the incoming call barring on the basis of the identifier upon routing of the priority call.