WO2013079025A1

WO2013079025A1 - Non-voice emergency service media selection method and system, network side, and terminal

Info

Publication number: WO2013079025A1
Application number: PCT/CN2012/085675
Authority: WO
Inventors: 谢振华
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-11-30
Filing date: 2012-11-30
Publication date: 2013-06-06
Also published as: CN103139743A

Abstract

Disclosed is a non-voice emergency service (NOVES) media selection method, comprising: a terminal initiating an emergency service voice session request; a network side notifying the terminal of supported NOVES media resource information; and the terminal selecting media resource information for use according to the received NOVES media resource information. Also disclosed are a NOVES media selection system, a network side, and a terminal. Through the solution of the present invention, the terminal can initiate a NOVES session establishment process according to the selected NOVES media resource information, and a user is enabled to implement an emergency session by using non-voice media.

Description

Non-voice emergency service media selection method, system and network side, terminal technical field

The present invention relates to a network capability information notification technology, and in particular, to a non-voice emergency service media selection method and system, and a network side and a terminal. Background technique

IP Multimedia Subsystem (IMS, IP Multimedia Subsystem) is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3GPP), which builds an open and flexible business environment and supports multimedia. Application, and can provide users with rich multimedia services. After the introduction of the IMS network, emergency services are one of the services that the communication network must support. The IMS network also needs to support emergency services. At present, the 3GPP standards organization has completed the support of the network emergency call service. The network does not have a specific solution for non-voice emergency services (NOVES, Non-Voice Emergency Service), and cannot meet the needs of users for non-speech media for emergency sessions. Summary of the invention

In view of this, the main purpose of the present invention is to provide a non-voice emergency service media selection method and system, and a network side and a terminal, so that the terminal can initiate a NOVES session establishment process according to the selected NOVES media resource information, and can be used by the user. Non-speech media for emergency conversations.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The invention provides a NOVES media selection method, the method comprising:

The terminal initiates an emergency service voice session request;

The NOVES media resources that will be supported after the network side receives the emergency service voice session request. Notifying the terminal of the information;

The terminal selects the used media resource information according to the received NOVES media resource information. In the above solution, the network side notifies the terminal of the supported NOVES media resource information as:

The Public Safety Access Point (PSAP) carries the NOVES media resource information that it supports in the refusal response to the terminal, or the IMS network element adds the NOVES media resource information supported by the PSAP in the forwarded rejection response.

In the above solution, the network side notifies the terminal of the supported NOVES media resource information as:

The PSAP carries the NOVES media resource information supported by the PSAP to the terminal in the call response, or the IMS network element adds the NOVES media resource information supported by the PSAP in the forwarded call response.

In the foregoing solution, the media resource information selected by the terminal according to the received NOVES media resource information is:

The terminal independently selects the NOVES media resource information in the received NOVES media resource information, or selects the used NOVES media resource information according to the user's decision.

In the above solution, the method further includes: the terminal re-initiating the NOVES session establishment process according to the received rejection response, and carrying the selected NOVES media resource information in the re-initiated emergency service voice session request.

In the above solution, the method further includes:

The terminal sends an update request to the PSAP according to the received call response, and carries the relevant information used by the terminal to receive the NOVES media in the update request according to the selected NOVES media resource information.

The invention provides a non-voice emergency service media selection system, and the system comprises: a network Network side and terminal;

a terminal, configured to initiate an emergency service voice session request; and select media resource information to be used according to the received NOVES media resource information;

The network side is configured to notify the terminal of the supported NOVES media resource information after receiving the emergency service voice session request.

In the foregoing solution, the network side includes: an IMS network element and a PSAP, where

The IMS network element is configured to: after receiving the emergency service voice session request, forward the emergency service voice session request to the PSAP; and forward the rejection response or the call response carrying the NOVES media resource information supported by the PSAP to the terminal;

The PSAP is configured to send a reject response or a call response carrying the NOVES media resource information supported by the PSAP to the IMS network element.

The IMS network element is configured to: after receiving the emergency service voice session request, forward the emergency service voice session request to the PSAP; and receive the rejection response or the call response that does not carry the NOVES media resource information supported by the PSAP, and then forward the message to the terminal Adding PSAP-supported NOVES media resource information in the refusal response or call response;

PSAP, used to return a rejection response or call response that does not carry NOVES media resource information that it supports.

In the above solution, the terminal includes: a requesting module, a selecting module, where

a requesting module, configured to initiate an emergency service voice session request;

A selection module is configured to select a media resource information to be used according to the received NOVES media resource information.

The network side of the non-voice emergency service medium selection provided by the present invention, the network side includes: an IMS network element and a PSAP, where

An IMS network element, configured to forward the emergency service after receiving an emergency service voice session request The voice session requests to the PSAP; and forwards the rejection response or the call response carrying the NOVES media resource information supported by the PSAP to the terminal;

The terminal provided by the present invention for non-speech emergency service media selection, the terminal includes: a request module, a selection module, where

The present invention provides a non-speech emergency service media selection method and system, and a network side and a terminal, and the terminal initiates an emergency service voice session request; the network side notifies the terminal of the supported NOVES media resource information; The NOVES media resource information selects the media resource information used; thus, the terminal can initiate a NOVES session establishment process according to the selected NOVES media resource information, and can enable the user to use the non-speech media for the emergency session. DRAWINGS

1 is a schematic flowchart of a method for selecting a non-voice emergency service medium according to the present invention; FIG. 2 is a schematic structural diagram of a non-voice emergency service media selection system according to the present invention; 3 is a schematic flowchart of a method for selecting a non-voice emergency service medium according to an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a method for selecting a non-voice emergency service medium according to Embodiment 2 of the present invention. The basic idea of the present invention is: The terminal initiates an emergency service voice session request; the network side notifies the terminal of the supported NOVES media resource information; and the terminal selects the used media resource information according to the received NOVES media resource information.

The network side includes: an IMS network element, a PSAP, and the like; the IMS network element includes: a proxy call session control function (P-CSCF) and an emergency call session control function (E-CSCF).

The invention will be further described in detail below with reference to the drawings and specific embodiments.

The present invention implements a non-voice emergency service media selection method. As shown in FIG. 1, the method includes the following steps:

Step 101: The terminal initiates an emergency service voice session request.

The emergency service voice session request generally carries voice media resource information or non-voice media resource information;

The emergency service voice session request is an invitation (INVITE) message carrying a SOS identifier, where the invitation message carries a voice media type, and receives an IP address, a port number, and an encoding of the voice media, or carries a video media type and receives the Information such as the IP address, port number, and encoding of the video media;

Further, in the header field of the invite message or the Session Description Protocol (SDP) part in the message body, an identifier supporting NOVES is carried, and the identifier is used as an indication to support NOVES.

Step 102: After receiving the emergency service voice session request, the network side notifies the terminal of the supported NOVES media resource information.

Specifically, after receiving the emergency service voice session request, the IMS network element on the network side forwards the The emergency service voice session request to the PSAP; when the PSAP does not support the media type indicated by the voice media resource information carried in the emergency service voice session request or the NOVES media type indicated by the non-voice media resource information, the PSAP carries its own support in the rejection response. The NOVES media resource information is sent to the terminal, or the PSAP directly returns a rejection response. After the IMS network element receives the PSAP rejection response, the IMS network element adds the PSAP-supported NOVES media resource information in the forwarded rejection response according to the network configuration. ;

When the PSAP supports the media type indicated by the voice media resource information carried in the emergency service voice session request or the media type indicated by the non-voice media resource information, the PSAP sends the NOVES media resource information supported by the PSAP to the terminal in the call response. Or, the PSAP directly returns the call response, and after the IMS network element receives the call response of the PSAP, the IMS network element adds the NOVES media resource information supported by the PSAP to the forwarded call response according to the network configuration;

The NOVES media resource information includes: a type of the NOVES media resource and related information such as an IP address, a port number, and a code of the NOVES media.

Step 103: The terminal selects the used NOVES media resource information in the received NOVES media resource information.

Specifically, the terminal may independently use any of the NOVES media resource information in the received NOVES media resource information, or may select the NOVES media resource information to be used according to the user's decision, for example, prompting in a dialog box form. NOVES media resource information selected by the user;

The step further includes: the terminal establishing an emergency session media connection according to the selected NOVES media resource information;

Specifically, the terminal re-initiates the NOVES session establishment process according to the received rejection response, and carries the selected NOVES media resource information in the re-initiated emergency service voice session request; the network side IMS network element can be based on two emergency The time difference between the call requests is less than the set value, and the re-initiated emergency call request is routed to the last PSAP, or may be based on the terminal. The re-initiated identifier added in the newly initiated emergency call request, and the re-initiated emergency call request is routed to the last PSAP, that is, the two emergency call requests are processed by the same PSAP; the terminal according to the received call In response, sending an update request to the PSAP, such as sending an UPDATE message, according to the selected NOVES media resource information, carrying an update request to receive information about the IP address, port number, and encoding of the NOVES media, the update request being used by the IMS network The meta-forwarding is forwarded to the PSAP; after receiving the update request, the PSAP updates the used media resource information and sends an agreement to update the message, such as sending a "200 OK" message, agreeing that the update message carries the IP address, port number and the PSAP used to receive the NOVES media. Coding and other related information; after sending the consent update message, the PSAP also sends a response message, such as sending a "200 OK" message, which is forwarded to the terminal through the IMS network element.

In order to implement the above method, the present invention further provides a non-voice emergency service media selection system. As shown in FIG. 2, the system includes: a network side 21 and a terminal 22;

The terminal 22 is configured to initiate an emergency service voice session request, and select, according to the received NOVES media resource information, the used media resource information;

The network side 21 is configured to notify the terminal 22 of the supported NOVES media resource information after receiving the emergency service voice session request;

The terminal 22 is further configured to establish an emergency session media connection according to the selected NOVES media resource information;

The network side 21 includes: an IMS network element 211 and a PSAP 212, where

The IMS network element 211 is configured to: after receiving the emergency service voice session request, forward the emergency service voice session request to the PSAP 212; and forward the rejection response or call response carrying the NOVES media resource information supported by the PSAP 212 to the terminal 22;

The PSAP 212 is configured to send a reject response or a call response that carries the NOVES media resource information supported by itself to the IMS network element 211;

Specifically, the voice media carried in the emergency service voice session request is not supported by the PSAP 212. When the media type indicated by the resource information or the NOVES media type indicated by the non-voice media resource information, the PSAP 212 carries the NOVES media resource information supported by the PSAP 212 to the IMS network element 211 in the rejection response; and the PSAP 212 supports the emergency service voice session request. When the media type indicated by the carried voice media resource information or the media type indicated by the non-voice media resource information, the PSAP 212 carries the NOVES media resource information supported by the PSAP 212 to the IMS network element 211 in the call response;

Alternatively, the IMS network element 211 is configured to: after receiving the emergency service voice session request, forward the emergency service voice session request to the PSAP 212; after receiving the rejection response or the call response that does not carry the NOVES media resource information supported by the PSAP 212, Adding NOVES media resource information supported by the PSAP 212 in the reject response or call response forwarded to the terminal 22;

The PSAP 212 is configured to return a rejection response or a call response that does not carry the NOVES media resource information supported by itself;

Specifically, when the PSAP 212 does not support the media type indicated by the voice media resource information carried in the emergency service voice session request or the NOVES media type indicated by the non-voice media resource information, the PSAP 212 directly returns the rejection response; the emergency service is supported at the PSAP 212. When the media type indicated by the voice media resource information carried in the voice session request or the media type indicated by the non-voice media resource information, the PSAP 212 directly returns the call response.

The terminal 22 includes: a requesting module 221, a selecting module 222, where

The requesting module 221 is configured to initiate an emergency service voice session request;

The selecting module 222 is configured to select the used media resource information according to the received NOVES media resource information, and notify the establishment session module 223;

The terminal 22 further includes: a setup session module 223, configured to establish an emergency session media connection according to the selected NOVES media resource information;

The selecting module 222 is specifically configured to: in the NOVES media resource information supported by the received PSAP 212, independently select any of the NOVES media resource information, or use a dialog box. The form prompts the user to select the NOVES media resource information used;

The establishing session module 223 is specifically configured to re-initiate the NOVES session establishment process according to the received rejection response, and carry the selected NOVES media resource information in the re-initiated emergency service voice session request; according to the received call response, An update request is sent to the PSAP 212, and the update request carries the terminal 22 for receiving related information such as an IP address, a port number, and a code of the NOVES media.

Based on the above system, the present invention implements a non-voice emergency service media selection network side. As shown in FIG. 2, the network side 21 includes: an IMS network element 211 and a PSAP 212, where

Specifically, when the PSAP 212 does not support the media type indicated by the voice media resource information carried in the emergency service voice session request or the NOVES media type indicated by the non-voice media resource information, the PSAP 212 carries the NOVES media resource supported by the PSAP 212 in the rejection response. The information is sent to the IMS network element 211. When the PSAP 212 supports the media type indicated by the voice media resource information carried in the emergency service voice session request or the media type indicated by the non-voice media resource information, the PSAP 212 carries its own support in the call response. The NOVES media resource information is sent to the IMS network element 211;

PSAP 212, used to return the rejection of NOVES media resources information that does not carry its own support Response or call response;

Based on the above system, the present invention implements a non-speech emergency service media selection terminal. As shown in FIG. 2, the terminal 22 includes: a requesting module 221 and a selection module 222, where

The selecting module 222 is specifically configured to: in the NOVES media resource information supported by the received PSAP 212, independently select one of the NOVES media resource information, or prompt the user to select the used NOVES media resource information in a dialog box form;

The establishing session module 223 is specifically configured to re-initiate the NOVES session establishment process according to the received rejection response, and carry the selected NOVES media resource information in the re-initiated emergency service voice session request; according to the received call response, An update request is sent to the PSAP 212, and the update request carries the terminal 22 for receiving related information such as an IP address, a port number, and a code of the NOVES media. Embodiment 1

In this embodiment, the terminal initiates the establishment of the NOVES session, selects the NOVES media resource information used according to the NOVES media resource information supported by the PSAP, and re-initiates the NOVES process. As shown in Figure 3, the specific steps are as follows:

Step 201: The terminal initiates an emergency service voice session request, and carries non-voice media resource information. The emergency service voice session request, such as an invitation (INVITE) message carrying a sos identifier, is in the header field of the invite message or the SDP in the message body. The part carries a logo supporting NOVES, which serves as an indication to support NOVES;

Further, the invitation message further carries a video media type and information such as an IP address, a port number, and an encoding of the video media.

Step 202: The P-CSCF receives the emergency service voice session request and forwards it to the E-CSCF. Step 203: The E-CSCF receives the emergency service voice session request and forwards the request to the PSAP. Step 204: The PSAP does not support the The NOVES media type indicated by the non-voice media resource information carried in the emergency service voice session request is sent to the terminal by the NOVES media resource information supported by the refusal response, and the rejection response is forwarded by the E-CSCF and the P-CSCF. Give the terminal

The 4 huge response 3⁄4 port "415 (Unsupported Media Type)" message.

Step 205: The terminal selects the used NOVES media resource information in the received NOVES media resource information, and establishes an emergency session media connection according to the selected NOVES media resource information.

Specifically, the terminal may select one of the NOVES media resource information in the received PSAP-supported NOVES media resource information, or prompt the user to select the used NOVES media resource information in a dialog box;

The terminal re-initiates the NOVES session establishment process according to the received rejection response, and carries the selected NOVES media resource information in the re-initiated emergency service voice session request; the network side IMS network element can be based on two emergency call requests. The time difference between the two is less than the set value, and the re-initiated emergency call request is routed to the last PSAP, and the re-initiated emergency call may be added according to the re-initiated identifier added by the terminal in the re-initiated emergency call request. The route is routed to the last PSAP, that is, two emergency call requests are processed by the same PSAP. In the above step 204, the PSAP may also not carry the supported NOVES media resource information in the reject response, and the E-CSCF or the P-CSCF adds the supported NOVES media resource information according to the network configuration in the forwarded reject response.

Embodiment 2

In this embodiment, the terminal initiates the establishment of an emergency service voice session, and selects the NOVES media resource information used by the NOVES media resource information supported by the PSAP to initiate the NOVES process, as shown in FIG. 4, and the specific steps are as follows:

Step 301: The terminal initiates an emergency service voice session request, and carries the voice media resource information. The emergency service voice session request is an invitation message carrying the SOS identifier, where the invitation message carries the voice media type and the IP address and port that receives the voice media. The information such as the number and the encoding carries an identifier supporting the NOVES media type in the header field of the invitation message or the SDP part in the message body, and the identifier serves as an indication supporting the NOVES media type.

Step 302: The P-CSCF receives the emergency service voice session request and forwards it to the E-CSCF. Step 303: The E-CSCF receives the emergency service voice session request and forwards the request to the PSAP. Step 304: The PSAP supports the emergency The voice media type indicated by the voice media resource information carried in the service voice session request, the PSAP sends a call response, and carries the NOVES media resource information supported by the call in the call response to the terminal, where the call response is E-CSCF and P - the CSCF forwards to the terminal;

The call response is such as a "183 (Ses Progress)" message;

Further, the call response further carries information such as an IP address, a port number, and a code of the voice media received by the PSAP.

Step 305: The terminal selects the used NOVES media resource information in the received NOVES media resource information, and establishes an emergency session media connection according to the selected NOVES media resource information. Specifically, the terminal may independently use any of the NOVES media resource information in the received NOVES media resource information, or may prompt the user to select the used NOVES media resource information in a dialog box manner;

The terminal sends an update request to the PSAP according to the received call response, such as sending an UPDATE message, and carrying the IP address, port number, and encoding of the NOVES media in the update request according to the selected NOVES media resource information. Related information, the update request is forwarded to the PSAP by the IMS network element; after receiving the update request, the PSAP updates the used media resource information, and sends an agreement to update the message, such as sending a "200 OK" message, agreeing that the update message carries the PSAP for receiving The IP address, port number, and encoding information of the NOVES media; after sending the consent update message, the PSAP also sends a response message, such as sending a "200 OK" message, and forwarding it to the terminal through the IMS network element.

In the above step 304, the PSAP may not carry the supported NOVES media resource information in the call response, and the E-CSCF or the P-CSCF adds the supported NOVES media resource information according to the network configuration in the forwarded call response.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

A non-voice emergency service (NOVES) media selection method, characterized in that the method comprises:

The terminal initiates an emergency service voice session request;

After receiving the emergency service voice session request, the network side notifies the terminal of the supported NOVES media resource information;

The terminal selects the used media resource information according to the received NOVES media resource information.

2. The non-speech emergency service medium selection method according to claim 1, wherein the network side notifies the terminal of the supported NOVES media resource information as:

The Public Safety Access Point (PSAP) sends its own supported NOVES media resource information to the terminal in the rejection response, or the IP Multimedia Subsystem (IMS) network element adds the PSAP-supported NOVES media resource information in the forwarded rejection response. .

The non-speech emergency service medium selection method according to claim 1, wherein the network side notifies the terminal of the supported NOVES media resource information to:

The method for selecting a non-speech emergency service medium according to claim 1, wherein the media resource information selected by the terminal according to the received NOVES media resource information is:

The non-speech emergency service medium selection method according to claim 2, wherein the method further comprises: the terminal re-initiating a NOVES session according to the received rejection response. The establishment process carries the selected NOVES media resource information in the re-initiated emergency service voice session request.

The non-speech emergency service medium selection method according to claim 3, wherein the method further comprises:

A non-speech emergency service media selection system, the system comprising: a network side and a terminal;

The emergency service medium selection system according to claim 7, wherein the network side comprises: an IMS network element and a PSAP, where

The IMS network element is configured to: after receiving the emergency service voice session request, forward the emergency service voice session request to the PSAP; and receive the rejection response or the call response that does not carry the NOVES media resource information supported by the PSAP, and then forward the message to the terminal Refuse to respond or add a PSAP to the call response Supported NOVES media resource information;

The emergency service medium selection system according to claim 7, wherein the terminal comprises: a request module, a selection module, wherein

A network side of a non-speech emergency service medium selection, where the network side includes: an IMS network element and a PSAP, where

12. A network side of a non-voice emergency service medium selection, where the network side includes: an IMS network element and a PSAP, where

A terminal for non-speech emergency service media selection, wherein the terminal comprises: a request module, a selection module, where a requesting module, configured to initiate an emergency service voice session request;