WO2016183775A1

WO2016183775A1 - Emergency call method, apparatus and device

Info

Publication number: WO2016183775A1
Application number: PCT/CN2015/079197
Authority: WO
Inventors: 李欢; 靳维生
Original assignee: 华为技术有限公司
Priority date: 2015-05-18
Filing date: 2015-05-18
Publication date: 2016-11-24
Also published as: CN106464653A

Abstract

Disclosed in the present invention are an emergency call method, apparatus and device. The method comprises: when receiving an emergency call instruction sent by a UE, obtaining position information of the UE; according to the position information of the UE, determining establishment information for establishing an emergency call session; and transmitting the establishment information to the UE.

Description

Emergency call method, device and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to an emergency call method, apparatus, and device.

Background technique

In the wireless evolution communication network, as shown in FIG. 1 , the core network mainly includes a mobility management network element (English: Mobility Management Entity, abbreviation: MME), a service gateway (English: Serving Gateway, abbreviation: S-GW), and The packet data network gateway (English: Packet Data Network Gateway, abbreviation: P-GW) has three logical functional entities.

The wireless evolution communication network includes not only the 3rd Generation Partnership Project (English: The 3rd Generation Partnership Project, 3GPP) network, but also the 3GPP network. Non-3GPP networks include trusted non-3GPP networks and non-trusted non-3GPP networks. When the current non-3GPP network accesses the 3GPP core network, as shown in FIG. 2, the trusted non-3GPP network accesses the 3GPP core network through the S2a interface with the P-GW. The non-trusted non-3GPP network accesses the 3GPP core network through an S2b interface between the evolved packet data gateway (English: Evolved Packet Data Gateway, abbreviated as: ePDG) and the P-GW. The ePDG is used to forward or allocate the mobile IP address of the UE, register the local IP address of the UE, and bind the mobile IP address of the UE to the local IP address. When the UE accesses the non-3GPP network, the authentication, authorization, and accounting server (English: Authentication, Authorization and Accounting server, AAA server) implements the authentication and authorization operation of the UE by interacting with the HSS network element, and establishes the UE. The P-GW identification information used for each packet data network (English: Packet Data Network, abbreviation: PDN) is registered in the HSS.

Generally, when the non-3GPP network accesses the 3GPP core network, as shown in FIG. 3, the trusted non-3GPP network or the non-trusted non-3GPP network can be accessed through the S2c interface between the UE and the P-GW. At the same time, when the UE accesses the 3GPP network, the UE can also establish a binding with the P-GW through the S2c interface. Currently, the WiFi-based voice (English: Voice over WiFi, abbreviation: VoWiFi) deployment generally uses the S2b access architecture, and the UE generally configures the ePDG location of the home location in advance. The address, regardless of the WLAN access network access from the UE, will select the home ePDG access. In the EPC network of the home location, the UE belongs to the non-roaming scenario, as shown in FIG. 4 .

When the terminal uses the VoWiFi service, only the home network deploys the ePDG, or the operator configures the terminal to prefer the ePDG access in the preferred home network, so that when the UE roams to other networks, the home network is still selected. The ePDG accesses the EPC. When the UE needs to make an emergency call, it will access the emergency call service of the home location according to the non-roaming architecture. However, since the UE is actually in an area other than the home location, in this case, the emergency call service of the home location cannot provide the UE with a real service at this time, so that the emergency call initiated by the UE fails.

Summary of the invention

The present invention provides an emergency call method, device and device for solving the problem that the UE initiates an emergency call failure in the case of a roaming place.

The first aspect provides an emergency call method, including: acquiring location information of the UE when receiving an emergency call indication sent by the UE; and determining establishment information for establishing an emergency call session according to the location information of the UE Sending the setup information to the UE.

In a first possible implementation manner of the first aspect, the establishing information includes at least one of: an indication for reselecting an evolved packet data gateway ePDG; and a trusted connection for accessing an emergency call An indication of an entry point; an indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing an emergency call service.

With reference to the first aspect or the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect, the indication for reselecting the ePDG includes: corresponding to the location information An ePDG address; and/or an ePDG identifier corresponding to the location information.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the indication for accessing the P-CSCF network element that provides the emergency call service includes: An address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information.

In a second aspect, an emergency call method is provided, including: sending an emergency call indication by a UE; And establishing setup information for establishing an emergency call session corresponding to the location information of the UE; and establishing an emergency call session according to the setup information.

In a first possible implementation manner of the second aspect, the establishing information includes at least one of: an indication for reselecting an evolved packet data gateway ePDG; and a trusted connection for accessing an emergency call An indication of an entry point; an indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing an emergency call service.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner of the second aspect, the indication for reselecting the ePDG includes: corresponding to the location information An ePDG address; and/or an ePDG identifier corresponding to the location information.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the indication for accessing the P-CSCF network element that provides the emergency call service includes: An address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the fourth possible implementation manner of the second aspect, the establishing information is used to re-select the indication of the ePDG, according to the establishing The information establishes an emergency call session, including: the UE selects an ePDG access of the roaming place to establish an emergency call session.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the establishing information is an indication of a trusted access point for accessing an emergency call And establishing an emergency call session according to the establishing information, including: the UE selecting a trusted WLAN access, and establishing an emergency call.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the establishing information is used to establish an indication of a 3GPP network connection, The information establishes an emergency call session, including: the UE selecting a 3GPP network connection to establish an emergency call session.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the establishing information is used to access a P-CSCF that provides an emergency call service. When the network element indicates, establishing an emergency call session according to the establishment information includes: sending a registration request to the P-CSCF network element to establish an emergency call session.

The third aspect provides an emergency call device, including: a receiving module, configured to receive an emergency call indication sent by the user terminal UE, and transmit the emergency call indication to an acquiring module; and an acquiring module, configured to receive the Obtaining the location information of the UE when the emergency call indication transmitted by the receiving module is received; the determining module is configured to determine, according to the location information of the UE, establishment information for establishing an emergency call session; and a sending module, configured to send to the UE Sending the setup information.

In a first possible implementation manner of the third aspect, the establishing information that is determined by the determining module includes at least one of: an indication for reselecting an evolved packet data gateway ePDG; An indication of a trusted access point into the emergency call; an indication for selecting a third generation partner plan 3GPP network connection; an indication for accessing the proxy call session control function P-CSCF network element providing the emergency call service.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the determining, by the determining module, the indication for reselecting the ePDG includes: An ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

With reference to the third aspect, or the first possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the determining, determining, by the determining module, accessing the P-CSCF that provides the emergency call service The indication of the network element includes: an address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information.

According to a fourth aspect, an emergency call device is provided, including: a sending module, configured to send an emergency call indication; and a receiving module, configured to receive, according to location information of the UE, establishment information for establishing an emergency call session; And used to establish an emergency call session according to the establishment information.

In a first possible implementation manner of the fourth aspect, the establishing information received by the receiving module includes at least one of: an indication for reselecting an evolved packet data gateway ePDG; An indication of a trusted access point into the emergency call; an indication for selecting a third generation partner plan 3GPP network connection; an indication for accessing the proxy call session control function P-CSCF network element providing the emergency call service.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in the second possible implementation manner of the fourth aspect, the receiving, by the receiving module, the indication for reselecting the ePDG includes: An ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the receiving module is configured to access a P-CSCF that provides an emergency call service The indication of the network element includes: an address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the establishing information that is received by the receiving module is used to re-select an ePDG The indicating module is specifically configured to select an ePDG access of the UE roaming place to establish an emergency call session.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the establishing information that is received by the receiving module is used for accessing an emergency call. When the trusted access point is instructed, the establishing module is specifically configured to select a trusted WLAN access and establish an emergency call.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a sixth possible implementation manner of the fourth aspect, the setup information received by the receiving module is used to select a 3GPP network connection And indicating, establishing an emergency call session according to the establishing information, including: the establishing module, specifically for selecting a 3GPP network connection, and establishing an emergency call session.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in the seventh possible implementation manner of the fourth aspect, the establishing information received by the receiving module is used for accessing an emergency call When the serving P-CSCF network element indicates, the establishing module is specifically configured to send a registration request to the P-CSCF network element to establish an emergency call session.

A fifth aspect provides an emergency call device, including: an interface, configured to receive an emergency call indication sent by a user terminal UE, and transmit the emergency call indication to a signal processor; a memory for storing a program instruction; a processor for following the program instructions stored in the memory, Acquiring the location information of the UE when receiving the emergency call indication transmitted by the interface; determining establishment information for establishing an emergency call session according to the location information of the UE; and transmitting the establishment information to the interface; The interface is further configured to send the setup information to the UE.

In a first possible implementation manner of the fifth aspect, the establishing information that is determined by the signal processor includes at least one of: an indication for reselecting an evolved packet data gateway ePDG; An indication of a trusted access point for accessing an emergency call; an indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing an emergency call service.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the signal processor determines an indication for reselecting the ePDG, including: An ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the signal processor determines a P- for accessing the emergency call service The indication of the CSCF network element includes: an address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information.

A sixth aspect provides an emergency call device, including: an interface for transmitting an emergency call indication, a memory for storing program instructions, and a signal processor for receiving and receiving the UE according to program instructions stored in the memory The location information corresponds to establishment information for establishing an emergency call session; and an emergency call session is established according to the establishment information.

In a first possible implementation manner of the sixth aspect, the establishing information received by the signal processor includes at least one of: an indication for reselecting an evolved packet data gateway ePDG; An indication of a trusted access point for accessing an emergency call; an indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing an emergency call service.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the fourth aspect, the signal processor receives the indication for reselecting an ePDG, And including: an ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a third possible implementation manner of the sixth aspect, the P- received by the signal processor for accessing the emergency call service is provided The indication of the CSCF network element includes: an address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a fourth possible implementation manner of the sixth aspect, the setup information received by the signal processor is used for reselection When the indication of the ePDG is performed; the ePDG access of the UE roaming location is selected to establish an emergency call session.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the setup information received by the signal processor is used for accessing an emergency call When the indication of the trusted access point is selected, a trusted WLAN access is selected to establish an emergency call.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a sixth possible implementation manner of the sixth aspect, the setup information received by the signal processor is used to select a 3GPP network connection When the indication is made, the 3GPP network connection is selected to establish an emergency call session.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a seventh possible implementation manner of the sixth aspect, the setup information received by the signal processor is used for accessing an emergency When the indication of the P-CSCF network element of the calling service is sent, a registration request is sent to the P-CSCF network element to establish an emergency call session.

By adopting the foregoing technical solution, when receiving an emergency call indication sent by the UE, acquiring location information of the UE; determining establishment information for establishing an emergency call session according to location information of the UE; and sending establishment information to the UE, according to the UE receiving The establishment information establishes an emergency call, so that the UE can guarantee the success rate of the emergency call initiated by the UE in other areas except the home location.

DRAWINGS

1 is a schematic diagram of a wireless evolved network architecture;

2 is a schematic diagram of a non-3GPP system accessing a wireless evolved network architecture by using an S2a or S2b interface;

3 is a schematic diagram of a non-3GPP system accessing a wireless evolved network architecture by using an S2c interface;

4 is a schematic diagram of a non-3GPP system accessing a wireless evolved network architecture by using an S2b interface;

FIG. 5 is a flowchart of an emergency call method according to Embodiment 1 of the present invention; FIG.

6 is a flowchart of an emergency call method according to Embodiment 2 of the present invention;

7 is a flowchart of an emergency call method according to Embodiment 3 of the present invention;

8 is a flowchart of an emergency call method according to Embodiment 4 of the present invention;

9 is a flowchart of an emergency call method according to Embodiment 5 of the present invention;

10 is a schematic structural diagram of an emergency call device according to Embodiment 6 of the present invention;

11 is a schematic structural diagram of a structure of an emergency call device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of an emergency call device according to Embodiment 7 of the present invention.

detailed description

The main implementation principles, specific implementation manners, and the corresponding beneficial effects that can be achieved by the technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

In the technical solution proposed by the embodiments of the present invention, the UE may access the network at home to establish an emergency call, or may access in other areas except the attribution (for convenience, simply referred to as a visited place or a roaming place). Network, establish an emergency call.

The process of establishing an emergency call by the UE at the home location may establish an emergency call service according to the processing manner of the call service under normal circumstances, and may also establish an emergency call according to the technical solution proposed by the present invention. In the technical solution given by the embodiment, the emergency call method will be elaborated by taking the UE as an example of establishing an emergency call by roaming access to the network.

The embodiments of the present invention provide and/or are used to indicate three technical solutions including the A and B conditions, the A condition, and the B condition.

Embodiment 1

The first embodiment of the present invention provides an emergency call method, as shown in FIG. 5, and the specific processing flow is as follows:

In step 50, the UE sends an emergency call indication.

The UE may send an emergency call indication through the second version of the Internet Key Exchange Protocol (English: Internet Key Exchange Version 2, abbreviation: IKEv2).

A preferred implementation manner, in the technical solution proposed by the first embodiment of the present invention, the UE sends IKEv2 signaling to the network side, and the emergency call indication is included in the IKEv2 signaling.

Step 51: The network side receives an emergency call indication sent by the UE.

If the UE sends an emergency call indication through IKEv2 signaling, the network side can obtain an emergency call indication in the received IKEv2 signaling. If the UE sends an emergency call indication through other signaling, the network side obtains an emergency call indication in other received signaling. If the UE sends an emergency call indication to the network side, the network side directly receives the emergency call indication sent by the UE.

A preferred implementation manner, in the technical solution proposed by the first embodiment of the present invention, the UE sends IKEv2 signaling to the network side, and the emergency call indication is included in the IKEv2 signaling. The network side can obtain an emergency call indication by receiving the IKEv2 signaling.

Step 52: The network side acquires location information of the UE when receiving the emergency call indication sent by the UE.

The location information of the UE may be reported to the network side together with the emergency call indication, or may be obtained by the network side according to the received emergency call indication.

The location information of the UE includes at least one of the following:

A: The address of the visited public land mobile network (English: Visited Public Land Mobile Network, abbreviation: vPLMN).

The address of the vPLMN where the UE is currently located.

B: Service Set Identifier (English: Service Set Identifier, abbreviation: SSID);

C: Geographical location information.

Address location information of the UE currently located, such as longitude, dimension, and so on.

D: Basic service set identifier of the WLAN access point (English: basic service set identifier, abbreviation: BSSID).

E: Location type (English: Venue type).

Obtaining the location information of the UE may generally include the following two methods:

One way is: the UE reports its own location information. In this case, the location information of the UE is pre-configured in the UE. For example, the location information of the UE is determined by the positioning module in the UE, and then the UE reports the location information to the network side. Alternatively, the UE uses the Access Network Query Protocol (ANQP) query or the DNS query to obtain its own location information, and reports the queried location information to the network side.

One way is that the network side can query the location information of the UE in the DNS when receiving the emergency call indication sent by the UE.

Step 53: Determine establishment information for establishing an emergency call session corresponding to the location information of the UE.

Among them, the establishment information includes at least one of the following:

The first way: an indication for reselecting the ePDG.

The network side device determines, according to the received emergency call indication, and the obtained location information of the UE, that the UE needs to select the ePDG access in the vPLMN to establish an emergency call, and the establishment information is an indication for reselecting the ePDG.

The indication for reselecting the ePDG includes an ePDG address corresponding to the location information of the UE; and/or an ePDG identifier corresponding to the location information of the UE.

The ePDG for reselection may be a visited v-ePDG address, and/or a visited v-ePDG identity.

The second way: an indication of a trusted access point for accessing an emergency call.

The indication of the trusted access point for accessing the emergency call, the indication may be an emergency indication of the S2a interface.

The network side device determines, according to the received emergency call indication and the acquired location information of the UE, that the UE needs to select a trusted access network to access the network to establish an emergency call.

For example, the UE needs to access the wireless local area network (Wireless Local Area Networks, WLAN) in a trusted manner to establish an emergency call, or the UE needs to select a trusted WLAN access to establish an emergency call.

The third way: an indication for selecting a 3GPP network connection.

The network side device determines, according to the received emergency call indication, and the acquired location information of the UE, that the UE needs to select a 3GPP network connection access network to establish an emergency call. The indication for selecting a 3GPP network connection may be a 3GPP emergency indication.

The fourth mode is used to access the indication of the network element of the proxy call session control function (English: Proxy Call Session Control Function, abbreviation: P-CSCF).

The network side device determines, according to the received emergency call indication, and the acquired location information of the UE, that the UE needs to select the visited P-CSCF network element to access the network, and establish an emergency call. The indication for accessing the P-CSCF network element providing the emergency call service may include an address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information.

Step 54: Send setup information to the UE.

The network side may send the setup information to the UE by using IKEv2 signaling.

Specifically, if the establishment information is an indication for accessing the P-CSCF network element providing the emergency call service, the network side creates the session request for the address and/or the identifier of the P-CSCF network element (English: create session request) In the case of the additional protocol configuration option (English: Additional Protocol Configuration Options, Abbreviation: APCO), the ePDG sends the P-CSCF address in the APCO to the UE by using IKEv2 signaling.

Step 55: The UE receives and establishes setup information for establishing an emergency call session.

In step 56, the UE establishes an emergency call session according to the setup information.

The first way: an indication for reselecting the ePDG.

The UE receives the setup information sent by the network side for re-selecting the ePDG. The UE reselects the v-ePDG according to the indication for reselecting the ePDG, performs a process of authentication and authorization, and establishes an emergency call.

The UE needs to access the WLAN in a trusted manner to establish an emergency call, or the UE needs to select a trusted WLAN access to establish an emergency call.

In a preferred embodiment, the UE selects a WLAN network that supports trusted WLAN access and supports emergency calls.

The third way: an indication for selecting a 3GPP network connection.

The indication for selecting a 3GPP network connection may be a 3GPP emergency indication.

The UE performs a selective 3GPP network connection according to the received indication for selecting a 3GPP network connection, and accesses the 3GPP network to establish an emergency call.

The fourth mode: an indication for accessing a P-CSCF network element that provides an emergency call service.

The indication for accessing the P-CSCF network element providing the emergency call service may include an address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information.

When receiving the indication indication for accessing the P-CSCF network element providing the emergency call service, the UE sends a registration request to the P-CSCF network element to establish an emergency call.

In the foregoing technical solution of the first embodiment of the present invention, the UE acquires the location information of the UE when the UE needs to make an emergency call, and determines the establishment information when establishing the emergency call according to the location information, and The establishment information is sent to the UE, and the UE establishes an emergency call according to the received setup information, so that the UE can establish a connection with the emergency call service network element of the visited place.

Embodiment 2

In the technical solution proposed by the second embodiment of the present invention, the network side device mainly includes an MME (not shown in FIG. 6), H-ePDG, v-ePDG, PGW, V-PCRF, H-PCRF, HSS/AAAServer, and the like.

The MME is configured to transmit NAS signaling between the user equipment (English: User Equipment, abbreviated: UE), encrypt the transmitted NAS signaling, assign a temporary identity to the UE, and access the UE. Selecting core network elements such as S-GW and P-GW, and providing roaming, tracking, and security functions for the UE, the MME corresponds to the current general mobile communication system (English: Universal Mobile Telecommunications System, abbreviation: UMTS) internal service general grouping The control plane part of the wireless service (English: General Packet Radio Service: GPRS) support node (English: Serving GPRS Support Node, abbreviation: SGSN). The S-GW is a mobility anchor for handover between the local evolved base stations (English: eNodeB), and is used to provide related functions such as lawful interception for the UE. The P-GW is used to allocate UE address, policy control, and enforcement of charging rules, as well as related functions such as lawful interception.

The H-ePDG is an ePDG deployed in the UE home network, and the v-ePDG is an ePDG deployed in the UE roaming network. The V-PCRF is a PCRF deployed in the UE roaming network, and the H-PCRF is a PCRF deployed in the UE home network.

The emergency call method proposed in Embodiment 2 of the present invention is as shown in FIG. 6, and the specific processing flow is as follows:

In step 61, the UE selects the H-ePDG and sends IKEv2 signaling to the selected H-ePDG.

The UE selects the H-ePDG, and the address of the H-ePDG may be pre-configured in the UE or obtained by the UE in the DNS query.

The UE includes an emergency call indication and current location information of the UE in the IKEv2 signaling. The location information of the UE includes at least one of the following:

A: The address of the vPLMN.

The address of the vPLMN where the UE is currently located.

B: SSID;

C: Geographical location information.

D: BSSID of the WLAN access point.

E: Venue type.

Step 62: The H-ePDG receives the IKEv2 signaling sent by the UE, and sends an authentication authentication request message to the AAA server.

The authentication authentication request message includes an emergency call indication and current location information of the UE.

Specifically, the H-ePDG transmits the received emergency call indication and location information to the AAA server via the authentication authentication request message.

Step 63: The AAA server receives the authentication authentication request message sent by the H-ePDG, and obtains the location information of the UE in the received authentication authentication request message.

Step 64: The AAA server determines, according to the obtained location information of the UE, that the UE should select an ePDG access network in the vPLMN, thereby establishing an emergency call.

In step 65, the AAA server returns an authentication authorization response message to the H-ePDG.

The authentication authorization response message includes an indication for reselecting the ePDG.

The indication for reselecting the ePDG may be an indication message, and may also include an ePDG address corresponding to the location information of the UE; and/or an ePDG identifier corresponding to the location information of the UE.

Specifically, the indication for reselecting the ePDG may include an address of the v-ePDG or an identifier of the v-ePDG.

Step 66: The H-ePDG receives an authentication authorization response message replied by the AAA server.

Step 67: The H-ePDG obtains an indication for reselecting the ePDG in the received authentication authorization response message.

Step 68: The H-ePDG sends the obtained indication for reselecting the ePDG to the UE by using IKEv2 signaling.

Correspondingly, for the above steps 62 to 68, the following steps can also be performed:

Step 62', the H-ePDG receives the IKEv2 signaling sent by the UE, and obtains an emergency call indication and current location information of the UE.

In step 63', the H-ePDG determines that the UE should select the ePDG access in the vPLAN and establish an emergency call.

In step 64', the H-ePDG sends an indication for reselecting the ePDG to the UE through IKEv2 signaling.

Comparing steps 62 to 68 and steps 62' to 64', it can be seen that steps 62' to 64' can be To save the H-ePDG to AAA authentication and authorization process, speed up the emergency call setup process.

Step 69: The UE receives the IKEv2 signaling sent by the H-ePDG, and obtains an indication for reselecting the ePDG in the received IKEv2 signaling.

Step 70: The UE reselects the v-ePDG access according to the obtained indication for reselecting the ePDG.

In step 71, the UE sends IKEv2 signaling to the selected v-ePDG.

Step 72: The v-ePDG receives the IKEv2 signaling sent by the UE, and sends an authentication authentication request message to the AAA server.

Step 73: The AAA server receives the authentication authentication request message sent by the v-ePDG, and returns an authentication authorization response message to the v-ePDG.

Step 74: After the authentication is passed, the v-ePDG sends a create session request for establishing an emergency call to the PGW.

In step 75, the PGW replies with a create session response (create session response) to establish a PDN connection for the emergency call initiated by the UE.

In step 76, the v-ePDG receives the create session response, and obtains the IP address allocated by the PGW to the UE.

In step 77, the v-ePDG sends IKEv2 signaling to the UE.

The IKEv2 signaling includes an IP address allocated for the UE.

Embodiment 3

In the technical solution proposed by the third embodiment of the present invention, the network side device mainly includes an H-ePDG, a WLAN access gateway TWAG, a PGW, a V-PCRF, an H-PCRF, an HSS/AAAServer, and the like. The emergency call method proposed in the third embodiment of the present invention is as shown in FIG. 7, and the specific processing flow is as follows:

In step 701, the UE selects the H-ePDG and sends IKEv2 signaling to the selected H-ePDG.

The UE selects an H-ePDG, and the address of the H-ePDG may be pre-configured in the UE or obtained by the UE in a DNS query.

A: The address of the vPLMN.

The address of the vPLMN where the UE is currently located.

B: SSID.

C: Geographical location information.

D: BSSID of the WLAN access point.

E: Venue type.

Step 702: The H-ePDG receives the IKEv2 signaling sent by the UE, and sends an authentication authentication request message to the AAA server.

Step 703: The AAA server receives the authentication authentication request message sent by the H-ePDG, and obtains the location information of the UE in the received authentication authentication request message.

Step 704: The AAA server determines, according to the obtained location information of the UE, that the UE should select a trusted access mode access, thereby establishing an emergency call.

Step 705: The AAA server returns an authentication authorization response message to the H-ePDG.

The authentication authorization response message includes an indication of a trusted access point for accessing the emergency call.

Wherein, the indication for accessing the trusted access point of the emergency call, the indication may be a S2aemergency indication.

The trusted WLAN can support the emergency access point (English: emergency access point name, abbreviation: emergency APN).

Step 706: The H-ePDG receives an authentication authorization response message replied by the AAA server.

Step 707: The H-ePDG obtains an emergency for access in the received authentication authorization response message. An indication of the trusted access point of the call.

Step 708: The H-ePDG sends the obtained indication of the trusted access point for accessing the emergency call to the UE by using IKEv2 signaling.

Correspondingly, for the above steps 702 to 708, the following steps can also be performed:

Step 702', the H-ePDG receives the IKEv2 signaling sent by the UE, and obtains an emergency call indication and current location information of the UE.

In step 703', the H-ePDG determines that the UE should select a trusted access mode access to establish an emergency call.

Step 704', the H-ePDG sends the determined indication of the trusted access point for accessing the emergency call to the UE by using IKEv2 signaling.

Comparing steps 702 to 708, and steps 702' to 708', it can be seen that steps 702' to 708' can save the H-ePDG to AAA authentication authorization process and speed up the emergency call establishment process.

Step 709: The UE receives the IKEv2 signaling sent by the H-ePDG, and obtains an indication of the trusted access point for accessing the emergency call in the received IKEv2 signaling.

Step 710: The UE performs a WLAN reselection process according to the obtained indication of the trusted access point for accessing the emergency call.

Step 711: The UE accesses the reselected WLAN, and sends an authentication authentication request message to the AAA server by using the reselected WLAN.

Step 712: The AAA server receives the authentication authentication request message sent by the UE, and returns an authentication authorization response message.

Step 713: After the authentication is passed, the UE sends a WLAN Control Protocol (English: WLAN Control Protocol, WLCP) PDN connection establishment request to the trusted WLAN access gateway TWAG, and the TWAG sends a create session for establishing an emergency call to the PGW. Request.

In step 714, the PGW replies with create sessionresponse to establish a PDN connection for the emergency call initiated by the UE.

Step 715: The create session response received by the UE obtains the IP address assigned by the PGW.

Embodiment 4

In the technical solution proposed by the fourth embodiment of the present invention, the network side device mainly includes an MME, an H-ePDG, a PGW, an HSS/AAAServer, and the like. The emergency call method proposed in Embodiment 4 of the present invention is as shown in FIG. 8 , and the specific processing flow thereof is as follows:

In step 801, the UE selects the H-ePDG and sends IKEv2 signaling to the selected H-ePDG.

A: The address of the vPLMN.

The address of the vPLMN where the UE is currently located.

B: SSID;

C: Geographical location information.

D: BSSID of the WLAN access point.

E: Venue type.

Step 802: The H-ePDG receives the IKEv2 signaling sent by the UE, and sends an authentication authentication request message to the AAA server.

Step 803: The AAA server receives the authentication authentication request message sent by the H-ePDG, and obtains the location information of the UE in the received authentication authentication request message.

Step 804: The AAA server determines, according to the obtained location information of the UE, that the UE should select 3GPP network access, thereby establishing an emergency call.

In step 805, the AAA server returns an authentication authorization response message to the H-ePDG.

The authentication authorization response message includes an indication for selecting a 3GPP network connection.

Step 806: The H-ePDG receives an authentication authorization response message replied by the AAA server.

Step 807: The H-ePDG obtains an indication for selecting a 3GPP network connection in the received authentication authorization response message.

Step 808: The H-ePDG sends the obtained indication for reselecting the ePDG to the UE by using IKEv2 signaling.

Correspondingly, for the above steps 802 to 808, the following steps can also be performed:

Step 802', the H-ePDG receives the IKEv2 signaling sent by the UE, and obtains an emergency call indication and current location information of the UE.

In step 803', the H-ePDG determines that the UE should select 3GPP network access to establish an emergency call.

Step 804', the H-ePDG sends the determined indication for reselecting the ePDG to the UE by using IKEv2 signaling.

Comparing steps 802 to 808, and steps 802' to 808', it can be seen that steps 802' to 808' can save the H-ePDG to AAA authentication authorization process and speed up the emergency call establishment process.

Step 809: The UE receives the IKEv2 signaling sent by the H-ePDG, and obtains an indication for selecting the 3GPP network connection in the received IKEv2 signaling.

Step 810: The UE selects 3GPP network access according to the obtained indication for selecting a 3GPP network connection.

In step 811, the UE sends a PDN connection establishment request to the MME.

Step 812: The MME receives the PDN connection establishment request, sends a session establishment request to the SGW, and the SGW forwards the message to the PGW.

In step 813, the PGW replies to the session establishment response message and allocates an IP address to the UE. The UE successfully establishes a PDN connection in the 3GPP network.

In step 814, the UE establishes an emergency call using the IP address assigned by the PGW.

In the foregoing technical solution of the embodiment of the present invention, if the UE selects 2/3G network access, the MME corresponds to the SGSN in the 2/3G network, and the PDN connection establishment request corresponds to the PDP context activation request.

Embodiment 5

In the technical solution proposed in the fifth embodiment of the present invention, the network side device mainly includes H-ePDG, PGW, V-PCRF, AAA proxy, H-PCRF, HSS/AAAServer, and the like. The emergency call method proposed in Embodiment 5 of the present invention is as shown in FIG. 9, and the specific processing flow is as follows:

In step 901, the UE selects the H-ePDG and sends IKEv2 signaling to the selected H-ePDG.

The UE includes an emergency call indication and current location information of the UE in the IKEv2 signaling. The location information may be a vPLMN ID or an SSID or the like.

Step 902: The H-ePDG receives the IKEv2 signaling sent by the UE, and sends an authentication authentication request message to the AAA server.

Step 903: The AAA server receives the authentication authentication request message sent by the H-ePDG, and obtains the location information of the UE in the received authentication authentication request message.

Step 904: The AAA server determines, according to the obtained location information of the UE, that the establishment information of the emergency call established by the UE is an indication for accessing the P-CSCF network element that provides the emergency call service.

In step 905, the AAA server returns an authentication authorization response message to the H-ePDG.

The authentication authorization response message includes an indication for accessing the P-CSCF network element that provides the emergency call service.

Specifically, in the technical solution of the fifth embodiment of the present invention, the indication for accessing the P-CSCF network element that provides the emergency call service is exemplified by taking the address of the P-CSCF network element as an example. The address of the P-CSCF network element will still be referenced in the following steps.

Step 906: The H-ePDG receives an authentication authorization response message replied by the AAA server.

Step 907: The H-ePDG obtains the address of the P-CSCF network element in the received authentication authorization response message.

Correspondingly, for the above steps 902 to 907, the following steps can also be performed:

Step 902', the H-ePDG receives the IKEv2 signaling sent by the UE, and obtains an emergency call indication and current location information of the UE.

Step 903', the H-ePDG determines that the UE establishes an emergency call setup information as an indication for accessing the P-CSCF network element providing the emergency call service.

Step 904', the H-ePDG sends the address of the P-CSCF network element to the UE through IKEv2 signaling.

Comparing steps 902 to 907, and steps 902' to 908', it can be seen that steps 902' to 907' can save the H-ePDG to AAA authentication authorization process and speed up the emergency call establishment process.

In step 908, the H-ePDG sends a create session request to the PGW.

The create session request includes the address of the obtained P-CSCF network element.

In step 909, the PGW obtains the address of the P-CSCF network element in the received create session request.

Step 910: The PGW sends the obtained address of the P-CSCF network element to the UE.

The PGW sends the obtained P-CSCF network element address to the H-ePDG through the APCO cell, and the H-ePDG sends the P-CSCF network element address in the APCO to the UE by using IKEv2 signaling.

The UE obtains the address of the P-CSCF network element, and the UE subsequently initiates registration with the P-CSCF network element corresponding to the address of the P-CSCF network element, and establishes an emergency call service connection.

Embodiment 6

Embodiment 6 of the present invention provides an emergency call method, and the specific processing procedure is as follows:

Step 1: Receive an emergency call indication sent by the UE.

Step 2: Acquire location information of the UE when receiving the emergency call indication sent by the UE.

Step 3: Determine establishment information for establishing an emergency call session according to the location information of the UE.

First: an indication for reselecting the evolved packet data gateway ePDG.

Specifically, the indication for reselecting the ePDG includes: an ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

Second: An indication of a trusted access point for accessing an emergency call.

Third: An indication for selecting a 3rd Generation Partnership Project 3GPP network connection.

Fourth: an indication for accessing a P-CSCF network element that provides an emergency call service.

Specifically, the indication for accessing the P-CSCF network element that provides the emergency call service includes: an address of the P-CSCF network element corresponding to the location information; and/or an identifier of the P-CSCF network element corresponding to the location information .

Step 4: Send the setup information to the UE.

Correspondingly, an embodiment of the present invention further provides an emergency call device, as shown in FIG. 10, including:

The receiving module 101 is configured to receive an emergency call indication sent by the UE, and transmit the emergency call indication to the acquiring module 102.

The obtaining module 102 is configured to acquire location information of the UE when receiving an emergency call indication transmitted by the receiving module.

The determining module 103 is configured to determine, according to location information of the UE, establishment information used to establish an emergency call session.

Specifically, the establishment information determined by the determining module 103 includes at least one of the following: an indication for reselecting the evolved packet data gateway ePDG; an indication of a trusted access point for accessing the emergency call. An indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing emergency call service.

Specifically, the determining, by the determining module 103, the indication for reselecting the ePDG includes: an ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

Specifically, the determining, by the determining module 103, the indication for accessing the P-CSCF network element that provides the emergency call service, includes: an address of the P-CSCF network element corresponding to the location information; and And an identifier of the P-CSCF network element corresponding to the location information.

The sending module 104 is configured to send the setup information to the UE.

Correspondingly, the sixth embodiment of the present invention further provides an emergency call device, as shown in FIG. 11, comprising: an interface 111, a memory 112, and a signal processor 113. The interface 111, the memory 112, and the signal processor 113 are connected by a bus and transmit data.

The interface 111 is configured to receive an emergency call indication sent by the user terminal UE, and transmit the emergency call indication to the signal processor 113.

The interface may be one or more of the following: a network interface controller (English: network interface controller, abbreviation: NIC), such as an Ethernet NIC, which can provide a copper wire and/or a fiber interface; The NIC of the wireless interface, such as a wireless local area network (English: wireless local area network, abbreviated as WLAN) NIC.

The memory 112 is configured to store program instructions.

The memory may be a volatile memory (English: volatile memory), such as random access memory (English: random-access memory, abbreviation: RAM); or non-volatile memory (English: non-volatile memory), such as flashing Memory (English: flash memory), hard disk (English: hard disk drive, abbreviated: HDD) or solid state drive (English: solid-state drive, abbreviation: SSD); or a combination of the above types of memory.

The signal processor 113 is configured to acquire location information of the UE when receiving the emergency call indication transmitted by the interface according to the program instruction stored in the memory 112, and determine to establish an emergency call according to the location information of the UE. The establishment information of the session; the establishment information is transmitted to the interface 111.

The signal processor can be a central processing unit (English: central processing unit, abbreviated: CPU), or a combination of a CPU and a hardware chip. The signal processor can also be a network processor (English: network processor, abbreviation: NP). Either a combination of CPU and NP, or a combination of NP and hardware chips.

The above hardware chip may be a combination of one or more of the following: an application-specific integrated circuit (ASIC: ASIC), a field programmable logic gate array (English) Text: field-programmable gate array, abbreviation: FPGA), complex programmable logic device (English: complex programmable logic device, abbreviation: CPLD).

Specifically, the establishment information determined by the signal processor 113 includes at least one of the following: an indication for reselecting the evolved packet data gateway ePDG; and a trusted access point for accessing the emergency call. An indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing an emergency call service.

Specifically, the indication that is used by the signal processor 113 to reselect the ePDG includes: an ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

Specifically, the indication that is used by the signal processor 113 to access the P-CSCF network element that provides the emergency call service includes: an address of the P-CSCF network element corresponding to the location information; and/or The identifier of the P-CSCF network element corresponding to the location information.

The foregoing interface 111 is further configured to send the setup information to the UE.

Example 7

The seventh embodiment of the present invention provides an emergency call method, and the specific processing procedure is as follows:

Step 1: The UE sends an emergency call indication.

Step 2: Receive establishment information for establishing an emergency call session corresponding to the location information of the UE.

Step 3: Establish an emergency call session according to the establishment information.

First: an indication for reselecting the evolved packet data gateway ePDG.

The indication for reselecting the ePDG includes: an ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

The fourth type: an indication for accessing the proxy call session control function P-CSCF network element providing the emergency call service.

The indication for accessing the P-CSCF network element providing the emergency call service, including: The address of the P-CSCF network element corresponding to the location information; and/or the identifier of the P-CSCF network element corresponding to the location information.

Specifically, when the establishment information is an indication for reselecting the ePDG, establishing an emergency call session according to the establishment information includes: the UE selects an ePDG access of the roaming place to establish an emergency call session.

Specifically, when the establishment information is an indication for accessing the trusted access point of the emergency call, establishing an emergency call session according to the establishment information, including: the UE selects a trusted WLAN access, and establishes an emergency call.

Specifically, when the setup information is an indication for selecting a 3GPP network connection, establishing an emergency call session according to the setup information includes: the UE selecting a 3GPP network connection, and establishing an emergency call session.

Specifically, when the establishment information is used to access the indication of the P-CSCF network element that provides the emergency call service, establishing an emergency call session according to the establishment information includes: sending a registration request to the P-CSCF network element to establish an emergency Call session.

Correspondingly, an embodiment of the present invention provides an emergency call device, as shown in FIG. 12, including:

The sending module 121 is configured to send an emergency call indication.

The receiving module 122 is configured to receive setup information for establishing an emergency call session corresponding to the location information of the UE.

The foregoing setup information received by the receiving module 122 includes at least one of the following: an indication for reselecting an evolved packet data gateway ePDG; an indication of a trusted access point for accessing an emergency call; An indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing emergency call service.

The indication for reselecting the ePDG received by the receiving module 122 includes: an ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

The indication received by the receiving module 122 for accessing the P-CSCF network element that provides the emergency call service includes: an address of the P-CSCF network element corresponding to the location information; and/or the location The identifier of the P-CSCF network element corresponding to the information.

The establishing module 123 is configured to establish an emergency call session according to the establishment information.

Specifically, when the setup information received by the receiving module is used to re-select an ePDG, the establishing module 123 is specifically configured to select an ePDG access of the UE roaming to establish an emergency call session.

Specifically, when the setup information received by the receiving module is an indication of a trusted access point for accessing an emergency call, the establishing module 123 is specifically configured to select a trusted WLAN access and establish an emergency call.

Specifically, when the setup information received by the receiving module is an indication for selecting a 3GPP network connection, the establishing module is specifically configured to select a 3GPP network connection and establish an emergency call session.

Specifically, when the setup information received by the receiving module is used to access an indication of a P-CSCF network element that provides an emergency call service, the establishing module is specifically configured to send to the P-CSCF network element. Register a request to establish an emergency call session.

Correspondingly, the embodiment of the present invention further provides an emergency call device, which has the same structural composition as FIG. 11 and includes an interface 111, a memory 112, and a signal processor 113. The interface 111, the memory 112, and the signal processor 113 are connected by a bus and transmit data.

The interface 111 is configured to send an emergency call indication.

The interface can be one or more of the following: a NIC that provides a wired interface, such as an Ethernet NIC, which can provide copper and/or fiber optic interfaces; a NIC that provides a wireless interface, such as a WLAN NIC.

The memory 112 is configured to store program instructions.

The memory may be a volatile memory such as a RAM; or a non-volatile memory such as a flash memory, HDD or SSD; or a combination of the above types of memories

The signal processor 113 is configured to receive, according to the program instruction stored in the memory 112, setup information for establishing an emergency call session corresponding to location information of the UE, and establish an emergency call session according to the establishment information.

The signal processor can be a CPU or a combination of a CPU and a hardware chip. The signal processor can also be an NP. Either a combination of CPU and NP, or a combination of NP and hardware chips.

The above hardware chip may be a combination of one or more of the following: ASIC, FPGA, CPLD.

Specifically, the setup information received by the signal processor 113 includes at least one of the following: an indication for reselecting the evolved packet data gateway ePDG; and a trusted access point for accessing the emergency call. An indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing an emergency call service.

Specifically, the indication for reselecting the ePDG received by the signal processor 113 includes: an ePDG address corresponding to the location information; and/or an ePDG identifier corresponding to the location information.

Specifically, the indication that is received by the signal processor 113 for accessing the P-CSCF network element that provides the emergency call service includes: an address of the P-CSCF network element corresponding to the location information; and/or The identifier of the P-CSCF network element corresponding to the location information.

Specifically, when the setup information received by the signal processor 113 is an indication for reselecting the ePDG, the ePDG access of the UE roaming location is selected to establish an emergency call session.

Specifically, when the setup information received by the signal processor 113 is an indication of a trusted access point for accessing an emergency call, a trusted WLAN access is selected to establish an emergency call.

Specifically, when the setup information received by the signal processor 113 is an indication for selecting a 3GPP network connection, the 3GPP network connection is selected to establish an emergency call session.

Specifically, when the setup information received by the signal processor 113 is used to access an indication of a P-CSCF network element that provides an emergency call service, send a registration request to the P-CSCF network element to establish an emergency call session. .

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, read-only optical disks, optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments of the invention. It will be understood that each flow and/or block, flow diagram, and/or block diagram in the flowchart and/or block diagram can be implemented by computer program instructions. Hehe. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including all modifications and variations of the preferred embodiments.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

An emergency call method, comprising:

Obtaining location information of the UE when receiving an emergency call indication sent by the UE;

Determining establishment information for establishing an emergency call session according to the location information of the UE;

Sending the setup information to the UE.
The method of claim 1 wherein said establishing information comprises at least one of:

An indication for reselecting the evolved packet data gateway ePDG;

An indication of a trusted access point for accessing an emergency call;

An indication for selecting a 3rd Generation Partnership Project 3GPP network connection;

An indication for accessing a proxy call session control function P-CSCF network element that provides an emergency call service.
The method of claim 2, wherein the indication for reselecting the ePDG comprises:

An ePDG address corresponding to the location information; and/or

An ePDG identifier corresponding to the location information.
The method of claim 2, wherein the indication for accessing the P-CSCF network element providing the emergency call service comprises:

The address of the P-CSCF network element corresponding to the location information; and/or

The identifier of the P-CSCF network element corresponding to the location information.
An emergency call method, comprising:

The UE sends an emergency call indication;

Receiving establishment information for establishing an emergency call session corresponding to the location information of the UE; and

An emergency call session is established in accordance with the setup information.
The method of claim 5 wherein said establishing information comprises at least one of:

An indication for reselecting the evolved packet data gateway ePDG;

An indication of a trusted access point for accessing an emergency call;

An indication for selecting a 3rd Generation Partnership Project 3GPP network connection;

An indication for accessing a proxy call session control function P-CSCF network element that provides an emergency call service.
The method of claim 6, wherein the indication for reselecting the ePDG comprises:

An ePDG address corresponding to the location information; and/or

An ePDG identifier corresponding to the location information.
The method of claim 6, wherein the indication for accessing the P-CSCF network element providing the emergency call service comprises:

The address of the P-CSCF network element corresponding to the location information; and/or

The identifier of the P-CSCF network element corresponding to the location information.
The method of claim 6, wherein the establishing information is an indication for reselecting an ePDG, and establishing an emergency call session according to the establishing information comprises:

The UE selects the ePDG access of the roaming place to establish an emergency call session.
The method according to claim 6, wherein when the establishment information is an indication for accessing a trusted access point of an emergency call, establishing an emergency call session according to the establishment information comprises:

The UE selects a trusted WLAN access to establish an emergency call
The method of claim 6, wherein the establishing information is an indication for selecting a 3GPP network connection, and establishing an emergency call session according to the establishing information comprises:

The UE selects a 3GPP network connection to establish an emergency call session.
The method of claim 6, wherein the establishing information is an indication for accessing a P-CSCF network element providing an emergency call service, and establishing an emergency call session according to the establishing information, comprising:

Sending a registration request to the P-CSCF network element to establish an emergency call session.
An emergency call device, comprising:

a receiving module, configured to receive an emergency call indication sent by the user terminal UE, and transmit the emergency call indication to the acquiring module;

An acquiring module, configured to acquire location information of the UE when receiving an emergency call indication transmitted by the receiving module;

a determining module, configured to determine, according to the location information of the UE, establishment information used to establish an emergency call session;

And a sending module, configured to send the setup information to the UE.
The apparatus according to claim 13, wherein the establishment information determined by the determining module comprises at least one of: an indication for reselecting an evolved packet data gateway ePDG; for accessing An indication of a trusted access point for an emergency call; an indication for selecting a third generation partnership plan 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing an emergency call service.
The apparatus according to claim 14, wherein the determining, by the determining module, the indication for reselecting the ePDG comprises: an ePDG address corresponding to the location information; and/or corresponding to the location information ePDG logo.
The apparatus according to claim 14, wherein the determining, by the determining module, the indication for accessing the P-CSCF network element providing the emergency call service comprises: a P-CSCF network corresponding to the location information The address of the meta; and/or the identity of the P-CSCF network element corresponding to the location information.
An emergency call device, comprising:

a sending module, configured to send an emergency call indication;

a receiving module, configured to receive setup information for establishing an emergency call session corresponding to location information of the UE;

And establishing a module, configured to establish an emergency call session according to the establishment information.
The apparatus according to claim 17, wherein said establishment information received by said receiving module comprises at least one of: an indication for reselecting an evolved packet data gateway ePDG; for accessing An indication of a trusted access point for an emergency call; used to select a third-generation partner program An indication of a 3GPP network connection; an indication for accessing a proxy call session control function P-CSCF network element providing an emergency call service.
The apparatus according to claim 18, wherein the indication for reselecting an ePDG received by the receiving module comprises: an ePDG address corresponding to the location information; and/or the location information Corresponding ePDG identifier.
The apparatus according to claim 18, wherein the indication received by the receiving module for accessing a P-CSCF network element providing an emergency call service comprises: a P-CSCF network corresponding to the location information The address of the meta; and/or the identity of the P-CSCF network element corresponding to the location information.
The device according to claim 18, wherein the establishment information received by the receiving module is an indication for reselecting an ePDG;

The establishing module is specifically configured to select an ePDG access of the UE roaming place to establish an emergency call session.
The device according to claim 18, wherein when the establishment information received by the receiving module is an indication for accessing a trusted access point of an emergency call,

The establishing module is specifically configured to select a trusted WLAN access and establish an emergency call.
The device according to claim 18, wherein when the establishment information received by the receiving module is an indication for selecting a 3GPP network connection,

Establishing an emergency call session according to the establishment information, including:

The establishing module is specifically configured to select a 3GPP network connection and establish an emergency call session.
The device according to claim 18, wherein the establishment information received by the receiving module is an indication for accessing a P-CSCF network element providing an emergency call service,

The establishing module is specifically configured to send a registration request to the P-CSCF network element to establish an emergency call session.
An emergency call device, comprising:

An interface, configured to receive an emergency call indication sent by the user terminal UE, and transmit the emergency call indication to the signal processor;

a memory for storing program instructions;

a signal processor, configured to receive the connection according to a program instruction stored in the memory Obtaining location information of the UE when the emergency call indication is transmitted by the port; determining establishment information for establishing an emergency call session according to the location information of the UE; and transmitting the establishment information to the interface;

The interface is further configured to send the setup information to the UE.
The apparatus according to claim 25, wherein said establishment information determined by said signal processor comprises at least one of: an indication for reselecting an evolved packet data gateway ePDG; An indication of a trusted access point into the emergency call; an indication for selecting a third generation partner plan 3GPP network connection; an indication for accessing the proxy call session control function P-CSCF network element providing the emergency call service.
The device according to claim 26, wherein the indication determined by the signal processor for reselecting the ePDG comprises: an ePDG address corresponding to the location information; and/or corresponding to the location information ePDG logo.
The device according to claim 26, wherein the signal processor determines an indication for accessing a P-CSCF network element providing an emergency call service, comprising: a P-CSCF corresponding to the location information The address of the network element; and/or the identifier of the P-CSCF network element corresponding to the location information.
An emergency call device, comprising:

Interface for sending emergency call indications,

a memory for storing program instructions;

And a signal processor, configured to receive, according to the program instructions stored in the memory, setup information for establishing an emergency call session corresponding to the location information of the UE; and establish an emergency call session according to the setup information.
The apparatus according to claim 29, wherein said establishment information received by said signal processor comprises at least one of: an indication for reselecting an evolved packet data gateway ePDG; An indication of a trusted access point into the emergency call; an indication for selecting a third generation partner plan 3GPP network connection; an indication for accessing the proxy call session control function P-CSCF network element providing the emergency call service.
The device according to claim 30, wherein the indication for reselecting the ePDG received by the signal processor comprises: an ePDG address corresponding to the location information; and / Or an ePDG identifier corresponding to the location information.
The device according to claim 30, wherein the indication received by the signal processor for accessing a P-CSCF network element providing an emergency call service comprises: a P-CSCF corresponding to the location information The address of the network element; and/or the identifier of the P-CSCF network element corresponding to the location information.
The device according to claim 30, wherein said establishment information received by said signal processor is for re-selecting an indication of ePDG; ePDG access for selecting a roaming location of the UE establishes an emergency call session .
The device according to claim 30, wherein when the establishment information received by the signal processor is an indication of a trusted access point for accessing an emergency call, a trusted WLAN access is selected, Establish an emergency call.
The device according to claim 30, wherein said establishment information received by said signal processor is an indication for selecting a 3GPP network connection, selecting a 3GPP network connection, and establishing an emergency call session.
The device according to claim 30, wherein said establishment information received by said signal processor is an indication for accessing a P-CSCF network element providing emergency call service to said P-CSCF The network element sends a registration request to establish an emergency call session.