System and method for optimization of multi-party calls in a satellite network

• US 6,138,014 A
• Filed: 02/27/1998
• Issued: 10/24/2000
• Est. Priority Date: 02/27/1998
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Alperovich, Vladimir, Valentine, Eric
• Primary Examiner(s): Vo, Nguyen
• Assistant Examiner(s): APPIAH, CHARLES NANA
• Application Number:
  US09/031,624
• Time in Patent Office: 970 Days
• Field of Search: 455/12.1, 455/13.1, 455/426, 455/432, 455/427, 455/430, 455/507, 455/508, 455/509, 455/428, 455/435, 455/445, 370/316, 370/351
• US Class Current: 455/428
• CPC Class Codes: H04B 7/18567 Arrangements for providing additional services to the basic mobile satellite telephony service

Abstract

A telecommunications system and method is disclosed for optimizing multi-party calls within a satellite network. This can be accomplished by the Mobile Switching Center (MSC) that the subscriber is currently registered in receiving a multi-party request from the subscriber and determining the most optimal MSC for the given multi-party call. The subscriber can then be re-registered in the most optimal MSC, and either the subscriber or the optimal MSC can set up the entire multi-party call. Alternatively, the subscriber can be re-registered in the optimal MSC, which then sets up the call to the first party of the multi-party call. Thereafter, the subscriber can set up the rest of the multi-party call.

Claims

1. A telecommunications system for optimizing a call between a given one of a plurality of mobile terminals within a satellite network and at least two called subscribers, each said called subscriber having a number associated therewith, said telecommunications system comprising:

an original mobile switching center in communication with said given mobile terminal via a satellite, said original mobile switching center receiving a service code from said given mobile terminal via said satellite, said service code triggering receiving means within said original mobile switching center for receiving each said number associated with each said called subscriber from said given mobile terminal;

an optimal mobile switching center in communication with said given mobile terminal via said satellite, said given mobile terminal registering with said optimal mobile switching center, said optimal mobile switching center connecting said call between said given mobile terminal and said at least two subscribers; and

determining means for determining said optimal mobile switching center based on each said number associated with each said called subscriber.

2. The telecommunications system of claim 1, wherein said determining means are located within said original mobile switching center.

3. The telecommunications system of claim 1, wherein said optimal mobile switching center is said original mobile switching center.

4. The telecommunications system of claim 1, wherein said given mobile terminal sends said service code and each said number associated with each said called subscriber to said optimal mobile switching center when said given mobile terminal registers with said optimal mobile switching center, said optimal mobile switching center connecting said call between said given mobile terminal and each said called subscriber using each said number associated with each said called subscriber.

5. The telecommunications system of claim 1, wherein said given mobile terminal sends a first one of said numbers associated with a first one of said called subscribers to said optimal mobile switching center when said given mobile terminal registers with said optimal mobile switching center, said optimal mobile switching center connecting said call between said given mobile terminal and said first called subscriber.

6. The telecommunications system of claim 5, wherein at least one additional one of said numbers is entered on said given mobile terminal, each said additional number being associated with an additional one of said called subscribers not connected with said given mobile terminal, said at least one additional number being sent from said given mobile terminal to said optimal mobile switching center, said optimal mobile switching center connecting said call between said given mobile terminal and said at least one additional called subscriber.

7. The telecommunications system of claim 1, wherein said original mobile switching center sends a first one of said numbers associated with a first one of said called subscribers to said given mobile terminal, said first number being associated with said optimal mobile switching center, said given mobile terminal dialing said first number, said original mobile switching center instructing said given mobile terminal to re-register with said optimal mobile switching center via said satellite based on said first number, said optimal mobile switching center connecting said call between said given mobile terminal and said first called subscriber.

8. The telecommunications system of claim 7, wherein at least one additional one of said numbers is entered on said given mobile terminal, each said additional number being associated with an additional one of said called subscribers not connected with said given mobile terminal, said at least one additional number being sent from said given mobile terminal to said optimal mobile switching center, said optimal mobile switching center connecting said call between said given mobile terminal and said at least one additional called subscriber.

9. The telecommunications system of claim 1, wherein said determining means comprises an optimization node connected to said original mobile switching center.

10. The telecommunications system of claim 1, wherein said optimal mobile switching center has the least cost connection to said called subscribers.

11. The telecommunications system of claim 1, wherein said original mobile switching center and said optimal mobile switching center are within said satellite network.

12. A telecommunications system for optimizing a call between a given one of a plurality of mobile terminals within a satellite network and at least two called subscribers, each said called subscriber having a number associated therewith, said telecommunications system comprising:

an original mobile switching center in communication with said given mobile terminal via a satellite, said original mobile switching center receiving at least said number associated with a given one of said called subscribers from said given mobile terminal;

an additional mobile switching center in communication with said given mobile terminal via said satellite, said original mobile switching center instructing said given mobile terminal to re-register with said additional mobile switching center, said additional mobile switching center connecting said call between said given mobile terminal and said given called subscriber, said additional mobile switching center further receiving at least one additional one of said numbers associated with at least one additional one of said called subscribers not connected with said given mobile terminal from said given mobile terminal; and

an optimal mobile switching center in communication with said given mobile terminal via said satellite, said additional mobile switching center instructing given mobile terminal to re-register with said optimal mobile switching center, said optimal mobile switching center connecting said call between said given mobile terminal, said given called subscriber and said at least one additional called subscriber; and

determining means for determining said additional mobile switching center based on said number associated with said given called subscriber and for determining said optimal mobile switching center based cn said number associated with said given called subscriber and said at least one additional number.

13. The telecommunications system of claim 12, wherein said determining means are located within said additional mobile switching center.

14. The telecommunications system of claim 12, wherein said additional mobile switching center sends an optimal one of said additional numbers to said given mobile terminal, said optimal additional number being associated with said optimal mobile switching center.

15. The telecommunications system of claim 14, wherein said given mobile terminal disconnects said call to said given called subscriber and sends said optimal additional number to said original mobile switching center, said original mobile switching center instructing said given mobile terminal to re-register with said optimal mobile switching center based on said optimal additional number, said optimal mobile switching center connecting said call between said given mobile terminal and said called subscribers.

16. The telecommunications system of claim 14, wherein said optimal additional number is displayed on a display on said given mobile terminal.

17. The telecommunications system of claim 12, wherein said additional mobile switching center is said optimal mobile switching center.

18. The telecommunications system of claim 12, wherein said determining means comprises an optimization node connected to said original mobile switching center.

19. The telecommunications system of claim 12, wherein said optimal mobile switching center has the least cost connection to said called subscribers.

20. The telecommunications system of claim 12, wherein said original mobile switching center and said optimal mobile switching center are within said satellite network.

24. The method of claim 20, further comprising, after said step of registering, the step of:

sending, by said given mobile terminal said service code and each said number associated with each said called subscriber to said optimal mobile switching center.

25. The method of claim 20, further comprising, after said step of registering, the steps of:

sending, by said given mobile terminal, a first one of said numbers associated with a first one of said called subscribers to said optimal mobile switching center; and

connecting, by said optimal mobile switching center, said call between said given mobile terminal and said first called subscriber.

26. The method of claim 25, further comprising, after the step of connecting said call between said given mobile terminal and said first called subscriber, the steps of:

entering, on said given mobile terminal, at least one additional one of said numbers, each said additional number being associated with an additional one of said called subscribers not connected with said given mobile terminal; and

sending, by said given mobile terminal, said at least one additional number being sent to said optimal mobile switching center, said optimal mobile switching center connecting said call between said given mobile terminal and said at least one additional called subscriber.

27. The method of claim 20, further comprising, after said step of determining, the steps of:

sending, by said original mobile switching center, a first one of said numbers associated with a first one of said called subscribers to said given mobile terminal, said first number being associated with said optimal mobile switching center; and

sending, by said given mobile terminal, said first number to said original mobile switching center, said original mobile switching center instructing said given mobile terminal to re-register with said optimal mobile switching center via said satellite based on said first number, said optimal mobile switching center connecting said call between said given mobile terminal and said first called subscriber.

28. The method of claim 27, further comprising, after said step of sending said first number, the steps of:

entering, on said given mobile terminal, at least one additional one of said numbers, each said additional number being associated with an additional one of said called subscribers not connected with said given mobile terminal; and

sending, by said given mobile terminal, said at least one additional number to said optimal mobile switching center, said optimal mobile switching center connecting said call between said given mobile terminal and said at least one additional called subscriber.

21. A method for optimizing a call between a given one of a plurality of mobile terminals within a satellite network and at least two called subscribers, each said called subscriber having a number associated therewith, said method comprising the steps of:

sending, by said given mobile terminal, a service code to an original mobile switching center in communication with said given mobile switching center via said satellite;

receiving, by said original mobile switching center, each said number associated with each said called subscriber from said given mobile terminal;

determining an optimal mobile switching center for said call based on each said number associated with each said called subscriber;

registering, by said given mobile terminal, with said optimal mobile switching center; and

connecting, by said optimal mobile switching center, said call between said given mobile terminal and said at least two subscribers.

22. The method of claim 21, wherein said step of determining is performed by said original mobile switching center.

23. The method of claim 21, wherein said step of registering is performed when said optimal mobile switching center is said original mobile switching center.

29. The method of claim 21, wherein said step of determining is performed by an optimization node connected to said original mobile switching center.

30. The method of claim 21, wherein said optimal mobile switching center has the least cost connection to said called subscribers.

31. The method of claim 21, wherein said original mobile switching center and said optimal mobile switching center are within said satellite network.

32. A method for optimizing a call between a given one of a plurality of mobile terminals within a satellite network and at least two called subscribers, each said, called subscriber having a number associated therewith, said method comprising the steps of:

receiving, by an original mobile switching center in communication with said given mobile terminal via a satellite, at least said number associated with a given one of said called subscribers from said given mobile terminal;

determining an additional mobile switching center for said call based on said number associated with said given called subscriber;

instructing, by said original mobile switching center, said given mobile terminal to re-register with said additional mobile switching center via said satellite, said additional mobile switching center connecting said call between said given mobile terminal and said given called subscriber;

receiving, by said additional mobile switching center, at least one additional one of said numbers associated with at least one additional one of said called subscribers not connected with said given mobile terminal from said given mobile terminal;

determining an optimal mobile switching center for said call based on said number associated with said given called subscriber and said at least one additional number;

registering, by said given mobile terminal, with said optimal mobile switching center; and

connecting, by said optimal mobile switching center, said call between said given mobile terminal and said at least two subscribers.

33. The method of claim 32, wherein said second step of determining is performed by said additional mobile switching center.

34. The method of claim 32, further comprising, after said step of determining said optimal mobile switching center, the step of:

sending, by said additional mobile switching center, an optimal one of said additional numbers to said given mobile terminal, said optimal additional number being associated with said optimal mobile switching center.

35. The method of claim 34, further comprising, after said step of sending said optimal additional number, the steps of:

disconnecting, by said given mobile terminal, said call to said given called subscriber, said step of disconnecting re-registering said given mobile terminal with said original mobile terminal;

sending, by said given mobile terminal, said optimal additional number to said original mobile switching center; and

instructing, by said original mobile switching center, said given mobile terminal to re-register with said optimal mobile switching center based on said optimal additional number, said optimal mobile switching center connecting said call between said given mobile terminal and said called subscribers.

36. The method of claim 35, wherein said optimal additional number is displayed on a display on said given mobile terminal.

37. The method of claim 32, wherein said additional mobile switching center is said optimal mobile switching center.

38. The method of claim 32, wherein said step of determining is performed by an optimization node connected to said original mobile switching center.

39. The method of claim 32, wherein said optimal mobile switching center has the least cost connection to said called subscribers.

40. The method of claim 32, wherein said original mobile switching center and said optimal mobile switching center are within said satellite network.