Voice call connection method during a push to talk call in a mobile communication system

• US 20060035658A1
• Filed: 08/01/2005
• Published: 02/16/2006
• Est. Priority Date: 08/10/2004
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kang, Dong-Han, Shin, Jae-Gwan, Yoon, Sung-Jae
• Granted Patent: US 7,599,704 B2
• Time in Patent Office: Days
• US Class Current: 455/518
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/4061 Push-to services, e.g. push-to-talk or push-to-video
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Abstract

Disclosed is a method for connecting a phone call during a Push To Talk (PTT) call traffic in a mobile communication system. The method comprises the steps of searching for a subscriber information of a selected current subscriber from both a PTT subscriber information and a subscriber group list, if a predetermined phone call key has been input; determining if the subscriber information of the selected current subscriber which has been searched from the PTT subscriber information and the subscriber group list is matched to a subscriber information stored in an address registry to confirm the matched subscriber information of the address registry; and terminating the PTT session of the PTT call traffic, connecting the phone call to the selected current subscriber'"'"'s phone number based on the matched subscriber information of the address registry to perform the phone call traffic.

Claims

1. A method for connecting a phone call during a Push To Talk (PTT) call in a mobile communication system, the method comprising the steps of:

searching for subscriber information of a selected current subscriber from both a PTT subscriber information and a subscriber group list, if a predetermined phone call key has been input;

determining if the subscriber information of the selected current subscriber which has been searched from the PTT subscriber information and the subscriber group list is matched to a subscriber information stored in an address registry to confirm the matched subscriber information of the address registry; and

terminating the PTT session of the PTT call, connecting the phone call to the selected current subscriber'"'"'s phone number based on the matched subscriber information of the address registry to perform the phone call.

2. The method as claimed in one of claims 1, wherein the step for determining if the subscriber information of the current selected subscriber searched from the PTT subscriber information and the subscriber group list is matched to the subscriber information stored in the address registry, comprises comparing the corresponding subscriber'"'"'s name or phone number of the buddy list with those of the address registry.

3. The method as claimed in claim 1, wherein the method further comprises the steps of:

sending, to a PTT server, a request message of a predetermined format for requesting the PTT subscriber information and the subscriber group list, if the subscriber information of the selected current subscriber searched from the PTT subscriber information and the subscriber group list is not matched to the subscriber information stored in the address registry;

receiving the requested PTT subscriber information and the subscriber group list from the PTT server to update the address registry based on the received PTT subscriber information and the received subscriber group list; and

terminating the PTT session of the PTT call, connecting the phone call to the selected subscriber'"'"'s phone number based on the updated subscriber information to perform the phone call traffic.

4. The method as claimed in one of claims 3, wherein the step for determining if the subscriber information of the current selected subscriber searched from the PTT subscriber information and the subscriber group list is matched to the subscriber information stored in the address registry, comprises comparing the corresponding subscriber'"'"'s name or phone number of the buddy list with those of the address registry.

5. The method as claimed in claim 1, wherein the method further comprises the steps of:

sending, to a PTT server, a request message of a predetermined format for requesting a certain phone number from among the PTT subscriber information and a subscriber information of the subscriber group list, if the subscriber information of the selected current subscriber is not matched to the subscriber information stored in the address registry;

receiving and storing temporally the requested certain phone number from among the subscriber information from the PTT server; and

terminating the PTT session of the PTT call, connecting the phone call to the temporally stored phone number to perform the phone call.

6. The method as claimed in one of claims 5, wherein the step for determining if the subscriber information of the current selected subscriber searched from the PTT subscriber information and the subscriber group list is matched to the subscriber information stored in the address registry, comprises comparing the corresponding subscriber'"'"'s name or phone number of the buddy list with those of the address registry.

7. The method as claimed in claim 3, wherein the PTT server comprises a PTT over cellular server and a Group and List Management Server (GLMS).

8. The method as claimed in claim 1, wherein users can remotely establish, change or delete the group list information.

9. A system for connecting a phone call during a Push To Talk (PTT) call in a mobile communication system, comprising:

a mobile terminal for requesting subscriber information of a selected current subscriber from both a PTT subscriber information list and a subscriber group list, if a predetermined phone call key has been input on the mobile terminal; and

a PTT server for determining if the subscriber information of the selected current subscriber which has been searched from the PTT subscriber information and the subscriber group list is matched to a subscriber information stored in an address registry to confirm the matched subscriber information of the address registry, and terminating the PTT session of the PTT call, connecting the phone call to the selected current subscriber'"'"'s phone number based on the matched subscriber information of the address registry to perform the phone call.

10. The system as claimed in claim 9, wherein the PTT server comprises a PTT over cellular server and a Group and List Management Server (GLMS).

11. The system as claimed in claim 9, wherein the PTT server compares the selected subscriber'"'"'s name or phone number of the buddy list with those of the address registry.

12. A method for connecting a phone call during a Push To Talk (PTT) call between a first and second subscriber in a mobile communication system, the method comprising the steps of:

selecting the second subscriber from a buddy list;

selecting a predetermined key on a mobile terminal associated with converting a PTT call to a phone call;

comparing subscriber information to the buddy list; and

if there is a match, establishing the phone call.