System and method for providing a push to talk over cellular service

• US 9,445,439 B2
• Filed: 05/13/2015
• Issued: 09/13/2016
• Est. Priority Date: 10/04/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Chang, Deugku
• Primary Examiner(s): Trinh, Tan H
• Application Number:
  US14/711,353
• Publication Number:
  US 20150250005A1
• Time in Patent Office: 489 Days
• Field of Search: 455/422.1, 455/518, 455/519, 455/90.2, 455/466, 455/406, 455/507, 455/416, 455/435.3, 455/527, 455/512, 455/33.1, 455/34.1, 455/514, 455/450, 370/230, 370/252, 370/229, 370/310, 370/328, 370/331, 370/416, 709/203, 709/206, 709/227, 709/232, 709/204, 375/147
• US Class Current: 1/1
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 76/18 Management of setup rejection or failure
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Abstract

Systems, methods, and apparatuses (including, but not limited to, User Equipment (UE) and servers) that provide Push to Talk (PTT) over Cellular (PoC) service are described. Whether a PoC group call is established and/or released depends on the priority of any currently connected PoC groups and the number of current PoC connections.

Claims

1. A method for a User Equipment (UE) which provides a Push to talk over Cellular (PoC) service, comprising:

transmitting, to a server, a PoC group call request for a PoC connection for a PoC group; and

receiving a PoC group call response from the server in response to the PoC group call request, the PoC group call response comprising one of a rejection response and an acceptance response, based on a priority of any currently connected PoC groups and a number of current PoC connections.

2. The method of claim 1, wherein the acceptance response is received when the number of current PoC connections is less than a maximum number of PoC connections.

3. The method of claim 1, wherein the acceptance response is received when a priority of the PoC group for which the UE is requesting a PoC connection is greater than or equal to a lowest priority among currently connected PoC groups.

4. The method of claim 3, wherein, if the priority of the PoC group for which the UE is requesting a PoC connection is greater than the lowest priority among currently connected PoC groups and the number of current PoC connections is greater than or equal to a maximum number of PoC connections, a PoC connection corresponding to the PoC group with the lowest priority is released.

5. A user equipment (UE) which provides a Push to talk over Cellular (PoC) service, the UE comprising:

a transceiver; and

a controller that;

transmits, via the transceiver to a server, a PoC group call request for a PoC connection for a PoC group; and

receives via the transceiver a PoC group call response from the server in response to the PoC group call request, the PoC group call response comprising one of a rejection response and an acceptance response, based on a priority of any currently connected PoC groups and a number of current PoC connections.

6. The UE of claim 5, wherein the acceptance response is received when the number of current PoC connections is less than a maximum number of PoC connections.

7. The UE of claim 5, wherein the acceptance response is received when a priority of the PoC group for which the UE is requesting a PoC connection is greater than or equal to a lowest priority among currently connected PoC groups.

8. The UE of claim 7, wherein, if the priority of the PoC group for which the UE is requesting a PoC connection is greater than the lowest priority among currently connected PoC groups and the number of current PoC connections is greater than or equal to a maximum number of PoC connections, a PoC connection corresponding to the PoC group with the lowest priority is released.

9. A method for a User Equipment (UE) which provides a Push to talk over Cellular (PoC) service, comprising:

when a session release request for releasing a current PoC connection is received from a server, transmitting, to the server, a session release response in response to the session release request, wherein whether a session release request is received depends on a priority of any currently connected PoC groups and a number of current PoC connections; and

when a session invitation request for requesting a PoC connection is received from the server, transmitting, to the server, a session invitation response in response to the session invitation request, wherein whether a session invitation request is received depends on a priority of any currently connected PoC groups and a number of current PoC connections.

10. The method of claim 9, wherein the session invitation request is received when the number of current PoC connections is less than a maximum number of PoC connections and a priority of the PoC group for which the PoC connection is being requested is greater than or equal to a lowest priority among currently connected PoC groups.

11. The method of claim 9, wherein the session release request is received when a priority of a PoC group of the current PoC connection is less than a priority of another PoC group for which a PoC Connection has been requested and the number of current PoC connections is greater than or equal to a maximum number of PoC connections.

12. A user equipment (UE) which provides a Push to talk over Cellular (PoC) service, comprising:

a transceiver; and

a controller that;

when a session release request for releasing a current PoC connection is received from a server via the transceiver, transmits, via the transceiver to the server, a session release response in response to the session release request, wherein whether a session release request is received depends on a priority of any currently connected PoC groups and a number of current PoC connections; and

when a session invitation request for requesting a PoC connection is received from a server, transmits, via the transceiver to the server, a session invitation response in response to the session invitation request, wherein whether a session invitation request is received depends on a priority of any currently connected PoC groups and a number of current PoC connections.

13. The UE of claim 12, wherein the session invitation request is received when the number of current PoC connections is less than a maximum number of PoC connections and a priority of the PoC group for which the PoC connection is being requested is greater than or equal to a lowest priority among currently connected PoC groups.

14. The UE of claim 12, wherein the session release request is received when a priority of a PoC group of the current PoC connection is less than a priority of another PoC group for which a PoC Connection has been requested and the number of current PoC connections is greater than or equal to a maximum number of PoC connections.