METHOD, SERVER, AND SYSTEM FOR PROCESSING EMERGENCY CALL IN POC SERVICE

• US 20130102351A1
• Filed: 12/11/2012
• Published: 04/25/2013
• Est. Priority Date: 09/17/2010
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Mo, Lan
• Granted Patent: US 9,071,943 B2
• Time in Patent Office: Days
• US Class Current: 455/518
• 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 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
• CPC Class Codes: H04W 76/50 for emergency connections

Abstract

The present disclosure provides a method, a server and a system for processing an emergency call in a PoC service. The method includes: receiving, by a PoC server, an emergency call request sent by an initiator; adding, by the PoC server, a mobile terminal as one party to an established emergency call group according to the emergency call request, where a first party of the emergency call group is a dispatcher; and forwarding, by the PoC server, a two-way session between the mobile terminal and the dispatcher. In the embodiments of the present disclosure, an emergency call may be provided in a PoC service.

Claims

1. A method for processing an emergency call in a Push to talk over Cellular (PoC) service, comprising:

receiving, by a PoC server, an emergency call request sent by an initiator;

adding, by the PoC server, a mobile terminal as one party to an established emergency call group according to the emergency call request, wherein a first party of the emergency call group is a dispatcher; and

forwarding, by the PoC server, a two-way session between the mobile terminal and the dispatcher.

2. The method according to claim 1, wherein the initiator is the mobile terminal, and adding, by the PoC server, the mobile terminal as one party to the established emergency call group according to the emergency call request comprises:

selecting, by the PoC server, one emergency call group for the mobile terminal from multiple established emergency call groups according to busy/idle states of dispatchers that correspond to the multiple emergency call groups;

sending, by the PoC server, a floor request to a dispatcher that corresponds to a selected emergency call group, so that the dispatcher performs queuing processing on the floor request; and

receiving, by the PoC server, a floor grant response sent by the dispatcher, and forwarding the floor grant response to the mobile terminal, so that the mobile terminal initiates a conversation.

3. The method according to claim 1, wherein the initiator is the dispatcher, the emergency call request carries a mobile terminal ID, and adding, by the PoC server, the mobile terminal as one party to the established emergency call group according to the emergency call request comprises:

sending, by the PoC server, an emergency call request to a mobile terminal that corresponds to the mobile terminal ID; and

receiving, by the PoC server, a success response returned by the mobile terminal, and forwarding the success response to the dispatcher, so that the dispatcher initiates a conversation.

4. The method according to claim 2, wherein before receiving, by the PoC server, the emergency call request sent by the initiator, the method further comprises:

receiving, by the PoC server, a session release request sent by a mobile terminal; and

releasing, by the PoC server, a current session of the mobile terminal.

5. The method according to claim 3, wherein before sending, by the PoC server, the emergency call request to the mobile terminal that corresponds to the mobile terminal ID, the method further comprises:

sending, by the PoC server, a session release request to the mobile terminal, so that the mobile terminal releases a current session.

6. The method according to claim 1, further comprising:

receiving, by the PoC server, a request for establishing an emergency call group, wherein the request for establishing an emergency call group is sent by the dispatcher; and

establishing, by the PoC serve, an emergency call group, and using the dispatcher as a first party of the emergency call group.

7. The method according to claim 1, further comprising:

receiving, by the PoC server, an emergency call ending request sent by the dispatcher, wherein the emergency call ending request carries a mobile terminal ID;

deleting, by the PoC server, relevant emergency call information of a mobile terminal that corresponds to the mobile terminal ID, and changing a state of the dispatcher to an idle state; and

sending, by the PoC server, a session release request to the mobile terminal, so that the mobile terminal releases an emergency call.

8. The method according to claim 1, further comprising:

receiving, by the PoC server, an emergency call ending request sent by the mobile terminal;

deleting, by the PoC server, relevant emergency call information of the mobile terminal, and changing a state of a dispatcher that corresponds to the mobile terminal to an idle state; and

sending, by the PoC server, a floor idle message to the dispatcher, so that the dispatcher processes a next floor request.

9. A Push to talk over Cellular (PoC) server, comprising:

a receiving module, configured to receive an emergency call request sent by an initiator;

an adding module, configured to add a mobile terminal as one party to an established emergency call group according to the emergency call request, wherein a first party of the emergency call group is a dispatcher; and

a forwarding module, configured to forward a two-way session between the mobile terminal and the dispatcher.

10. The server according to claim 9, wherein the initiator is the mobile terminal, and the adding module comprises:

a selecting unit, configured to select one emergency call group for the mobile terminal from multiple established emergency call groups according to busy/idle states of dispatchers that corresponds to the multiple emergency call groups;

a request unit, configured to send a floor request to a dispatcher that corresponds to a selected emergency call group, so that the dispatcher performs queuing processing on the floor request; and

a granting unit, configured to receive a floor grant response sent by the dispatcher, and forward the floor grant response to the mobile terminal, so that the mobile terminal initiates a conversation.

11. The server according to claim 9, wherein the initiator is the dispatcher, the emergency call request carries a mobile terminal ID, and the adding module comprises:

a sending unit, configured to send an emergency call request to a mobile terminal that corresponds to the mobile terminal ID; and

a forwarding unit, configured to receive a success response returned by the mobile terminal, and forward the success response to the dispatcher, so that the dispatcher initiates a conversation.

12. The server according to claim 10, further comprising:

a release request receiving module, configured to receive a session release request sent by the mobile terminal; and

a release module, configured to release a current session of the mobile terminal.

13. The server according to claim 11, further comprising:

a release request sending module, configured to send a session release request to the mobile terminal, so that the mobile terminal releases a current session.

14. The server according to claim 9, further comprising:

an establishment request receiving module, configured to receive a request for establishing an emergency call group, wherein the request for establishing an emergency call group is sent by the dispatcher; and

an establishment module, configured to establish an emergency call group, and use the dispatcher as a first party of the emergency call group.

15. The server according to claim 9, further comprising:

a first ending request receiving module, configured to receive an emergency call ending request sent by the dispatcher, wherein the emergency call ending request carries a mobile terminal ID;

a first deleting module, configured to delete relevant emergency call information of a mobile terminal that corresponds to the mobile terminal ID, and change a state of the dispatcher to an idle state; and

a first ending module, configured to send a session release request to the mobile terminal, so that the mobile terminal releases an emergency call.

16. The server according to claim 9, further comprising:

a second ending request receiving module, configured to receive an emergency call ending request sent by the mobile terminal;

a second deleting module, configured to delete relevant emergency call information of the mobile terminal, and change a state of a dispatcher that corresponds to the mobile terminal to an idle state; and

a second ending module, configured to send a floor idle message to the dispatcher, so that the dispatcher processes a next floor request.

17. A system for processing an emergency call in a Push to talk over Cellular (PoC) service, comprising:

a dispatcher, configured to send a request for establishing an emergency call group to a PoC server, and as a first party of an emergency call group, perform an emergency call with a mobile terminal; and

the PoC server, configured to establish an emergency call group according to the request for establishing an emergency call group, add the mobile terminal as one party to an established emergency call group after receiving an emergency call request sent by an initiator, wherein the first party of the emergency call group is the dispatcher.