Method and devices for dialling services

• US 20040209603A1
• Filed: 05/07/2004
• Published: 10/21/2004
• Est. Priority Date: 11/30/1999
• Status: Active Grant

• Current Assignee: Optis Wireless Technology, LLC (Brevet Capital)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Kaibel, Martin, Keutmann, Heinz-Peter, Kobriger, Peter
• Granted Patent: US 7,324,811 B2
• Time in Patent Office: Days
• US Class Current: 455/414.2
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

The invention relates to a method and devices for dialling services in a mobile telecommunication network. A set of stored character strings used for comparison with character strings entered by a subscriber to call a service is modified, if a mobile user equipment switches from or to a visited telecommunication network.

In case that an entered character string matches a stored one, it is translated into a service identifier. This enables a subscriber to use character strings defined in a visited network for dialling services.

Claims

1-8. -8. (Cancelled)

9. Mobile user equipment comprising:

a unit for entering a desired call;

a memory for storing a service identifier;

a processing unit for mapping the desired call into a service identifier allocated to the desired call;

a sending unit for sending the allocated service identifier;

a storage for storing character strings used for dialing services; and

means for increasing the set of character strings stored in said storage by character strings used in a visited telecommunication network for dialing services.

10. The mobile user equipment according to claim 9, comprising means for reducing a stored set of character strings by character strings used in a visited telecommunication network for dialing services responsive to the mobile user equipment leaving the visited telecommunication network.

11. The mobile user equipment according to claim 9, wherein character strings are allocated to service identifiers.

12. A node for a telecommunication network, comprising:

a receiving unit for receiving a service identifier;

a memory for storing a dialing number;

a processing unit for mapping the service identifier into a dialing number allocated to the service identifier;

means for setting up a call to the service allocated to the dialing number; and

means for updating a set of character strings used for dialing services stored in a mobile user equipment.

13. The node according to claim 12, comprising:

means for recognising a language indicator; and

means for allocating dialing numbers to the language indicator.

14. The node according to claim 12, comprising:

means for determining a country code of a home telecommunication network; and

means for allocating dialing numbers to a country code.

15-19. -19. (Cancelled)

20. A method for dialing a service by a mobile station within a mobile telecommunication network, comprising the steps of:

receiving a call request;

mapping the desired call into a service identifier by said mobile station, said service identifier associated with a particular service;

transmtting the service identifier to the mobile telecommunications network to setup a call to said service;

detecting that said mobile station has switched to a visited telecommunication network; and

adding in said mobile station a new set of character strings to be used in said visited telecommunications network for dialing services.

21. The method of claim 20 further comprising the steps of:

detecting that said mobile station has switched from said visited telecommunication network; and

deleting the set of character strings added in the mobile station for said visited telecommunicaitons network.

22. The method of claim 20 further comprising the steps of:

wherein the step of receiving a call request is done by receiving a character string by said mobile station;

wherein a comparison of the received character string with pre-defined chacter strings is performed; and

if the received character string corresponds to a pre-defined character string, the requested call is mapped in the service identifier and the service identifier allocated to said character string is determined.

23. The method of claim 22 wherein said predefined character strings are stored on a subscriber identification card associated with said mobile station.

24. The method of claim 20 wherein an identification of a calling subscriber is transmitted and wherein a preferred language for the mapped service is determined by means of the identification of the calling subscriber.

25. The method of claim 20 wherein a language indicator is additionally transmitted from the mobile station to the telecommunication network and a preferred language is determined for the mapped service by means of the language indicator.

26. The method of claim 20 wherein the requested call is an emergency call service.