Method for providing closed user group service in mobile communication network

• US 6,097,949 A
• Filed: 04/14/1998
• Issued: 08/01/2000
• Est. Priority Date: 04/15/1997
• Status: Expired due to Term

• Current Assignee: SK Telecom Co., Ltd.
• Original Assignee: SK Telecom Co., Ltd.
• Inventors: Lim, Seul Gi, Lim, Jae Sung, Jung, Hae Kwan, Jang, Han Sik
• Primary Examiner(s): Hunter, Daniel S.
• Assistant Examiner(s): WYCHE, MYRON
• Application Number:
  US09/060,392
• Time in Patent Office: 840 Days
• Field of Search: 455/426, 455/414, 455/422, 455/466, 455/31.3
• US Class Current: 455/466
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/184 Messaging devices, e.g. message centre
• CPC Class Codes: H04W 92/02 Inter-networking arrangements

Abstract

A method for providing a closed user group service in mobile communication network. The mobile stations belonging to a certain CUG group must save the correspondence message identifier(ID) before start of service. For assigning or cancelling a message identifier to a mobile station, teleservice identifier(TI) message in a point-to-point short message is used. The mobile stations receive the cell broadcast message and compares the message ID of the received message with the saved message ID in their storage device. If the message ID of the received message is equal to the saved message ID, the mobile stations belonging to the certain group display the message information on their own display panel. If not, the mobile stations do not display.

Claims

1. A method for providing a closed user group service in a mobile communication network which comprises at least a first mobile station, and a cell broadcast center/short message center, said method including the steps of:

(a) respectively assigning a first closed user group (CUG) identifier to each mobile station belonging to a first closed user group having at least a first mobile station;

(b) storing said first CUG identifier in a storage means within said at least a first mobile station;

(c) comparing a received CUG identifier in a received cell broadcast message with said stored first CUG identifier after receiving said broadcast message at said at least a first mobile station; and

(d) displaying said received cell broadcast message on a panel of said at least a first mobile station, if said received CUG identifier is equal to said stored first CUG identifier.

2. A method as claimed in claim 1, further including the step of:

(e) cancelling said first CUG identifier from said storage means within said at least a first mobile station, when a subscriber belonging to said closed user group does not want to be provided said service any more.

3. A method as claimed in claim 1, wherein in said step a) respectively assigning, a teleservice identifier (TI) message in a point-to-point short message is used to assign said CUG identifier.

4. A method as claimed in claim 2, wherein in said step e) cancelling, a teleservice identifier (TI) message in a point-to-point short message is used to cancel said first CUG identifier from said storage means.