CN101902715A - Emergency service processing method, equipment and network system - Google Patents
Emergency service processing method, equipment and network system Download PDFInfo
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Abstract
The embodiment of the invention provides an emergency service processing method, emergency service processing equipment and a network system. The emergency service processing method comprises the following steps of: acquiring emergency service information of a network which is to be switched by user equipment UE needing switching and emergency service information of the UE; determining whether target networks which support the UE to perform emergency service are present in the network to be switched by the UE according to the emergency service information of the network to be switched by the UE and the emergency service information of the UE; if so, switching the emergency service performed by the UE to one of the target networks. The technical scheme provided by the embodiment of the invention can guarantee the uninterrupted emergency service when the UE performs network switching.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a device, and a network system for processing an emergency service.
Background
At present, most networks support User Equipment (UE) to perform emergency services, and regardless of whether the UE is in a limited state or in an unrestricted state, the most networks can utilize an IP connectivity access network and an IMS (IP Multimedia Subsystem) to provide the emergency services for the UE, so as to ensure normal operation of the emergency services. However, in some networks, the UE cannot perform emergency services in the network for various reasons. If the UE is switching from the source network to the target network when the UE is in the emergency service, and the target network does not support the emergency service currently performed by the UE, the emergency service currently performed by the UE is interrupted.
Disclosure of Invention
The embodiment of the invention provides an emergency service processing method, equipment and a network system, which can ensure that the emergency service is not interrupted when UE (user equipment) performs network switching.
In view of this, the embodiment of the present invention provides:
an emergency service processing method includes:
acquiring emergency service information of a network to be switched of User Equipment (UE) needing to be switched and the emergency service information of the UE;
and determining whether a target network supporting the UE to perform the emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE and the emergency service information of the UE, and if so, switching the emergency service performed by the UE to one of the target networks.
An emergency service processing method includes:
acquiring emergency service information of User Equipment (UE) needing to be switched;
determining whether the target network supports the UE to perform emergency service according to the emergency service information of the UE and the emergency service information of the target network to be switched by the UE;
and sending the information whether the target network supports the UE to perform the emergency service to a source network where the UE is currently located.
An emergency service processing method includes:
when User Equipment (UE) with SRVCC capability needs to be switched, determining that the UE is in a limited state and is carrying out emergency service;
and initiating an SRVCC switching request to a mobility management network element, and switching the ongoing emergency service of the UE from the PS domain to the CS domain.
An emergency service processing apparatus, comprising:
a first obtaining unit, configured to obtain emergency service information of a network to be switched of a user equipment UE that needs to be switched;
a second obtaining unit, configured to obtain emergency service information of the UE;
a determining unit, configured to determine whether a target network supporting the UE to perform an emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE acquired by the first acquiring unit and the emergency service information of the UE acquired by the second acquiring unit;
and the switching unit is used for switching the emergency service performed by the UE to one of the target networks when the determining unit determines that the target network supporting the emergency service performed by the UE exists in the network to be switched by the UE.
An emergency service processing device, located in a target network to be switched by a UE, includes:
an obtaining unit, configured to obtain emergency service information of a user equipment UE that needs to be switched;
a determining unit, configured to determine whether the target network supports the UE to perform an emergency service according to the emergency service information of the UE acquired by the acquiring unit and the emergency service information of the target network to be switched by the UE;
and the sending unit is used for sending the information whether the target network supports the UE to carry out the emergency service to the source network where the UE is currently located according to the determination result of the determining unit.
An emergency service processing apparatus, comprising:
a determining unit, configured to determine that a user equipment UE with SRVCC capability is in a restricted state and is performing an emergency service when the UE needs to perform handover;
a sending unit, configured to initiate an SRVCC handover request to a mobility management network element after the determining unit determines that the UE is in the limited state and is performing an emergency service, and handover the emergency service being performed by the UE from a PS domain to a CS domain.
A network system, comprising: a mobility management network element in a source network, a mobility management network element in a target network, wherein,
the mobility management network element of the target network is used for receiving the emergency service information of the UE needing to be switched, which is sent by the mobility management network element in the source network, determining whether the target network supports the UE to perform the emergency service according to the emergency service information of the UE and the emergency service information of the target network, and sending the information whether the target network supports the UE to perform the emergency service to the mobility management network element in the source network;
the mobility management network element in the source network is configured to send emergency service information of the UE that needs to be switched to a mobility management network element in a target network, receive information that is sent by the mobility management network element in the target network and used for determining whether the target network supports the UE to perform the emergency service, and notify an access network element in the source network whether the target network supports the UE to perform the emergency service according to the information that whether the target network supports the UE to perform the emergency service.
The embodiment of the invention determines whether a target network supporting the UE to perform the emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE and the emergency service information of the UE, and if so, the emergency service of the UE is switched to the target network so as to ensure that the emergency service is not interrupted due to the switching of the UE.
The embodiment of the invention determines whether the target network supports the UE to perform the emergency service according to the emergency service information of the target network to be switched by the UE and the emergency service information of the UE, and informs the source network of the determination result (the information whether the target network supports the UE to perform the emergency service), so that the source network can determine whether to approve the UE to be switched to the target network according to the determination result, and the interruption of the emergency service caused by the switching of the UE is ensured.
When the embodiment of the invention determines that the UE in the limited state is carrying out the emergency service, the embodiment of the invention initiates a Single Radio Voice Call Continuity (SRVCC) switching request of Single Radio access to a mobility management network element, so that the emergency service carried out by the UE is switched from a PS domain to a CS domain, and the emergency service is ensured not to be interrupted.
Drawings
Fig. 1 is a flowchart of an emergency service processing method according to an embodiment of the present invention;
fig. 2 is a flowchart of an emergency service processing method according to a second embodiment of the present invention;
fig. 3 is a signaling diagram of an access network element acquiring a service restriction indication and a service restriction cause indication of a UE in the second embodiment of the present invention;
fig. 4 is a flowchart of an emergency service processing method according to a third embodiment of the present invention;
fig. 5 is a flowchart of an emergency service processing method according to a fourth embodiment of the present invention;
fig. 6 is a flowchart of an emergency service processing method according to a sixth embodiment of the present invention
Fig. 7 is a structural diagram of an emergency service processing apparatus according to a seventh embodiment of the present invention;
fig. 8 is a structural diagram of an emergency service processing apparatus according to an eighth embodiment of the present invention;
fig. 9 is a structural diagram of an emergency service processing apparatus according to a ninth embodiment of the present invention.
Detailed Description
The first embodiment is as follows:
referring to fig. 1, an embodiment of the present invention provides an emergency service processing method, where the method includes:
101. the method comprises the steps of obtaining emergency service information of a network to be switched of User Equipment (UE) needing to be switched and the emergency service information of the UE.
102. And determining whether a target network supporting the UE to perform the emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE and the emergency service information of the UE, and if so, switching the emergency service performed by the UE to one of the target networks.
The emergency service information of the network to be switched by the UE comprises a service limitation reason indication supported by the network to be switched by the UE, and the emergency service information of the UE comprises the service limitation reason indication of the UE;
or the emergency service information of the network to be switched by the UE comprises an indication whether the network to be switched by the UE supports the emergency service, and the emergency service information of the UE comprises an indication that the emergency service exists in the UE.
The embodiment of the invention determines whether a target network supporting the UE to perform the emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE and the emergency service information of the UE, and if so, the emergency service of the UE is switched to the target network so as to ensure that the emergency service is not interrupted due to the switching of the UE.
Example two:
referring to fig. 2, a second embodiment of the present invention provides an emergency service processing method, where the method is applied to a UE in a limited state and performing an emergency service when a network is switched, and the method includes:
201. and the access network element in the source network acquires the service limitation indication and the service limitation reason indication of the UE.
Due to the particularity of the emergency service, the network may support the emergency service performed by the UE under some special conditions, for example, the UE does not have an International Mobile Subscriber Identity (IMSI), or the UE is in a restricted area, or the UE does not obtain network authorization, and the like, if the UE does not have an IMSI, the reason for the restriction of the service is that there is no IMSI; if the UE is in the restricted area, the reason that the service is restricted is that the UE is in the restricted area; if the UE is not authorized by the network, the service limitation reason is not authorized by the network at the moment.
And the access network element in the subsequent source network acquires the service limitation reason of the UE in the source network according to the service limitation reason indication.
202. An access network element in a source network acquires emergency service information of a plurality of networks, wherein the emergency service information of each network comprises: an indication of whether the network supports emergency services, and/or an indication of a reason for limited service supported by the network. In this embodiment, the emergency service information at least includes an indication of a service restriction reason supported by the network. The service limitation reason indication supported by the network identifies the service limitation reason of the UE which is supported by the network to carry out the emergency service. That is, if the service restriction reason of the UE belongs to the service restriction reason identified by the service restriction reason indication supported by the network, the network supports the UE to perform the emergency service.
The plurality of networks are networks to which the UE may be handed over, that is, target networks to which the UE is to be handed over.
In this step, the access network element in the source network may obtain information of the emergency services supported by the multiple networks, where the information is obtained by the access network element in the source network from other network element devices, or obtained by information pre-configured in the access network element.
It should be noted that, the above steps 201 and 202 have no sequence, and do not affect the implementation of the present invention.
203. When knowing that the UE needs to perform network switching, an access network element in a source network determines that the UE is performing emergency service according to the bearer APR information, and determines whether a network supporting the UE with the service limitation reason to perform emergency service exists in a plurality of networks (wherein, the network supporting the UE with the service limitation reason to perform emergency service is called a target network) according to the pre-acquired service limitation reason of the UE and service limitation reason indications supported by the plurality of networks, if so, 204 is executed, and if not, 205 is executed.
The specific implementation manner of this step may be: and respectively judging whether the service limitation reason indication supported by each network in the plurality of networks is matched with the service limitation reason indication of the UE, if a network matched with the service limitation reason indication of the UE exists in the plurality of networks, determining that a target network supporting the UE to carry out emergency service exists in the plurality of networks, wherein the target network is the network matched with the service limitation reason indication of the UE.
204. And switching the ongoing emergency service of the UE into the target network, and ending the process.
205. If the UE has SRVCC capability, initiating SRVCC handover, and switching the ongoing emergency service of the UE from a Packet Switch (PS) domain to a Circuit Switch (CS) domain.
The specific implementation manner of the step is as follows: an access network element in a source network initiates an SRVCC handover request to a mobility management network element, the mobility management network element identifies a voice bearer of an emergency service based on a bearer service class Identity (QCI), and initiates a conversion from a PS domain to a CS domain to a target Mobile Switching Center (MSC) for the voice bearer of the emergency service.
Wherein, step 201 can be implemented at least in the following ways:
the first mode is as follows: as shown in fig. 3, includes:
301. the UE initiates an attach request message to an access network element.
If the UE knows that it is in the restricted state, the attach request message sent in this step is an emergency attach request message.
302. The access network element forwards the attach request message to the mobility management network element.
303. And executing an attachment process, determining the service limitation of the UE in the attachment process, and recording the reason of the service limitation.
Specifically, in the attaching process, acquiring subscription data of the UE, authenticating the UE, determining whether the UE is in a restricted area according to the subscription data of the UE, and if the UE is in the restricted area, recording the service restriction reason because the UE is in the restricted area; if the authentication of the UE fails, for example, the IMSI of the UE is false, the cause of the limited service is recorded as the authentication failure, and so on.
304-.
The second mode is as follows: the method may be applicable to the tracking area update of the UE in an idle state, the tracking area update of the UE in a connected state, or the tracking area update of the UE after handover, for example, in a process that the mobility management network element sends a tracking area accept message TAUAccept to the UE, where a Downlink NAS transport message Downlink NAS transport sent by the mobility management network element to the access network element carries the service limitation indication and the service limitation reason indication of the UE.
The third mode is as follows: the UE is switched in a connected state, and the service limitation in the switched network is limited, and the service limitation indication and the service limitation reason indication of the UE of the target access network element need to be notified.
Specifically, the third implementation manner may be any one of the following manner a or manner B:
mode A: in the X2-based handover procedure, the mobility management element notifies the target access network element of the traffic limitation indication and the traffic limitation reason indication of the UE, for example, notifies the target access network element (i.e., the access network element in step 201) through a path switch request response message (path switch request ack).
Mode B: at S1-based handover, the mobility management element may notify the target access network element UE of the service restriction indication and the service restriction reason indication through a handover request message (handover request).
The fourth mode is that: in the session management process, the UE notifies the access network element of its own traffic limitation indication and traffic limitation reason indication, for example, the UE may carry the traffic limitation indication and traffic limitation reason indication of the UE in a Bearer Setup Request/PDN connection Request PDN connectivity access message sent by the UE to the access network element.
The fifth mode is as follows: in the modification process of the subscription data, the service restriction indication and the service restriction reason indication of the UE are notified to the access network element, for example, after the UE is attached (may be a normal attachment or an emergency attachment), the subscription data of the UE changes, and when the subscription data is re-inserted, the mobility management network element finds that the UE is service restricted at this time, and may notify the access network element of the service restriction indication and the service restriction reason indication of the UE in a bearer modification request or Downlink NAS transport message transmitted by a Downlink non-access stratum.
It should be noted that: in the first implementation manner (notifying the service limitation indication and the service limitation reason indication of the UE in the attach process), the second implementation manner (notifying the access network element of the service limitation indication and the service limitation reason indication of the UE in the tracking area update process), the third implementation manner (notifying the access network element of the service limitation indication and the service limitation reason indication of the UE in the handover process), and the fifth implementation manner (notifying the access network element of the service limitation indication and the service limitation reason indication of the UE in the modification process of the subscription data), when the service limitation indication and the service limitation reason indication of the UE are notified to the access network element, it is possible that the UE does not perform an emergency service, and the subsequent UE initiates the emergency service.
Wherein, step 202 can be implemented at least as follows:
the first implementation mode comprises the following steps: the mobility management network element configures emergency service information of multiple networks related to the mobility management network element, where the multiple networks are networks to which the UE may be switched, and notifies the access network element of the emergency service information of the multiple networks. In particular, the mobility management element may inform the access network element in the following procedures, but not limited to these procedures: when UE is attached to a network, a mobility management network element establishes an initial context setup message to notify emergency service information of a plurality of networks to an access network element through an initial context; or, in the tracking area updating process, the mobility management network element notifies the access network element attached to the UE of the emergency service information of the multiple networks related to the mobility management network element.
The second implementation mode comprises the following steps: the mobility management element configures emergency service information of multiple networks related to the mobility management element, where the multiple networks are networks to which the UE may be handed over, and in an X2-based handover process, the mobility management element (i.e., the source side mobility management element) notifies emergency service information of other networks related to the mobility management element to an access network element through a Path switch request response message Path switch request ack.
The third implementation mode comprises the following steps: the access network element obtains the emergency service information of a plurality of networks from the mobility management network element at the target side: for example, during handover, the target side mobility management element notifies the source side mobility management element of the emergency service information of the target network through a Forward handover response message Forward handover response, and then the source side mobility management element notifies the source side access element of the emergency service information of the target network through a handover command, and the source side access element can store the emergency service information of the networks, so that the source side access network can subsequently select the handover target network for the UE.
It should be noted that, in the embodiment of the present invention, a mobility management network element in a source network may also determine whether a target network supporting the UE to perform an emergency service exists according to the emergency service information of the network to be switched by the UE and the emergency service information of the UE, if the target network exists, the UE is switched to one of the target networks to perform the emergency service, and if the target network does not exist, SRVCC switching is initiated, or non-3 GPP switching is initiated, the emergency service of the UE is switched to a CS domain, so as to ensure normal operation of the emergency service of the UE.
In the second embodiment of the present invention, when the UE in the limited state is performing the emergency service, according to the indication of the service limitation reasons supported by the multiple networks, the network supporting the UE to perform the emergency service is searched in the multiple networks, if the network supporting the UE to perform the emergency service is found, the UE is switched to the network supporting the UE to perform the emergency service, and if the network supporting the UE to perform the emergency service is not found, the emergency service of the UE is switched from the PS domain to the CS domain, so that it is ensured that the emergency service performed by the UE is not interrupted due to the switching.
Example three:
referring to fig. 4, a third embodiment of the present invention provides an emergency service processing method, where the method is applied to a UE in a normal state and performing an emergency service when a network is switched, and the method includes:
401. an access network element in a source network acquires emergency service information of a plurality of networks, wherein the acquired emergency service information supported by each network comprises: an indication of whether the network supports emergency services.
In this step, the manner in which the access network element in the source network acquires the emergency service information of the multiple networks is similar to the five implementation manners in step 201 in embodiment two, and details are not described here again.
402. When it is known that the UE needs to perform network handover, an access network element in the source network determines that the UE is performing an emergency service according to the bearer APR information, where the bearer APR information may be an indication that the UE has the emergency service, and searches whether a network supporting the emergency service exists in the multiple networks according to the obtained indication whether each network supports the emergency service in the multiple networks, if so, execute 403, and if not, end the process.
403. And switching the emergency service which is carried out by the UE into a network which supports the emergency service in the plurality of networks.
If more than two networks support the emergency service, selecting one network, switching the emergency service of the UE into the selected network, and if only one network supports the emergency service, switching the ongoing emergency service of the UE into the network.
It should be noted that, in the embodiment of the present invention, a mobility management network element in a source network may also determine whether a target network supporting the UE to perform an emergency service exists according to the emergency service information of the network to be switched by the UE and the emergency service information of the UE, switch the UE to one of the target networks to perform the emergency service if the target network exists, and initiate SRVCC handover if the target network does not exist, or initiate non-3 GPP handover, switch the emergency service of the UE to a CS domain, thereby ensuring normal operation of the emergency service of the UE.
In the third embodiment of the present invention, when the UE is performing the emergency service, a network supporting the emergency service is searched in the plurality of networks according to the indication whether the plurality of networks support the emergency service, and if the network supporting the emergency service is found, the emergency service supported by the UE is switched to the found network.
Example four:
referring to fig. 5, a fourth embodiment of the present invention provides an emergency service processing method, where the method is applied to a UE in a limited state and performing an emergency service when a network is switched, and the method includes:
501. and the source access network element sends a switching request message to the source mobility management network element.
502. The source mobility management network element sends a forwarding switching request message to a target mobility management network element, wherein the message comprises: the service limitation reason indication of the UE can also comprise the service limitation indication of the UE in the message.
The target mobility management network element is a mobility management network element in a network to be switched by the UE.
503. And the target mobility management network element determines the reason of the service limitation of the UE according to the received indication of the reason of the service limitation of the UE, confirms whether the target network supports the UE with the reason of the service limitation to carry out emergency service, if so, executes 504, and if not, executes 507.
The specific implementation manner of this step may be: and determining whether the service limitation reason indication supported by the target network is matched with the service limitation reason indication of the UE, and if so, determining that the target network supports the UE to perform emergency service.
504. And the target mobility management network element sends a load establishing request to the target service gateway, the target service gateway sends a load establishing response to the target mobility management network element, and a load for transmitting data between the target mobility management network element and the target service gateway is established.
505. And the target mobility management network element sends a switching request to the target access network element, and the target access network element sends a switching confirmation to the target mobility management network element.
506. The target mobility management network element sends a load establishing request to the target service gateway, the target service gateway sends a load establishing response to the target mobility management network element, and a load established by the forwarding data of the source network to the target network is established.
507. The target mobility management network element sends a forward switching response message to the source mobility management network element, if the step 503 determines that the target network does not support the UE to perform the emergency service, the forward switching response message carries an indication that the target network does not support the UE to perform the emergency service, and if the step 503 determines that the target network supports the UE to perform the emergency service, the forward switching response message carries an indication that the target network supports the UE to perform the emergency service; or, no matter whether the target network supports the UE to perform the emergency service, the forward handover response message sent by the target mobility management network element to the source mobility management network element carries the service limitation indication supported by the target network.
Or, when the forward switch response message carries the indication cell, the target network supports the UE to perform the emergency service, and the target network does not support the UE to perform the emergency service; or, when the forward switch response message carries the indication cell, the target network does not support the UE to perform the emergency service, and the forward switch response message does not carry the indication cell, the target network supports the UE to perform the emergency service.
For example, if a byte is used to identify the reason for supporting the service restriction, if a bit in the byte is 1, it indicates that the corresponding reason for supporting the service restriction is supported.
508. The source mobility management network element determines whether the target network supports the UE to perform the emergency service according to the forward handover response message, that is, determines whether the target network supports the UE having the service restriction reason to perform the emergency service, if so, sends a bearer creation request to the source serving gateway, and the source serving gateway sends a bearer creation response to the source mobility management network element, and continues to execute 509, if not, reselects a target network, and executes step 502.
509. And the source mobility management network element sends a switching command to the source access network element.
510. And the source access network element sends a switching command to the UE.
If the source mobility management network element determines that the target network does not support the UE for the emergency service in step 508, the source mobility management network element sends a handover preparation failure message (handover failure) to the source access network element, where the message carries an indication that the target network does not support the UE for the emergency service.
And subsequently, the access network element re-initiates the switching in the PS domain, or for the UE with the SRVCC capability, the access network element initiates the SRVCC switching to switch the emergency service from the PS domain to the CS domain, and the SRVCC switching can switch all services to the CS domain, or only switch the bearer of the emergency service away and suspend the bearers of other non-emergency services. After the emergency service is completed, the emergency service can be switched back to the PS domain.
For a UE without SRVCC capability, or in a case that a UE supporting emergency service cannot be found within a specific time, the cell may be carried in the message to indicate that the UE cannot complete handover, and specifically, the cell may include a reason indication indicating that handover cannot be completed, for example, the target network does not support emergency service performed by the UE with the service restriction reason. After receiving the cell, the UE can initiate the switching of the non-3 GPP network to ensure that the emergency service is not interrupted.
The embodiment of the invention judges whether the network supports the UE to carry out the emergency service according to the emergency service information supported by the target network to be switched of the UE, and determines whether the UE is allowed to be switched to the network according to the judgment result so as to ensure that the emergency service is not interrupted due to the switching of the UE.
Example five:
the fifth embodiment of the present invention provides an emergency service processing method, which is applicable to a UE in a normal state and performing an emergency service when a network handover occurs, and the method is different from the fourth embodiment in that: in step 502, the source mobility management element sends a forward-to-switch request message to the target mobility management element, where the forward-to-switch request message carries an indication that the UE has the emergency service, and the indication indicates that the UE is performing the emergency service, and in step 503, the target mobility management element determines whether the target network supports the emergency service, and in step 507, a forward-to-switch response message carries an indication whether the target network supports the emergency service. In step 508, when the source mobility management network element determines that the target network supports the emergency service, the source mobility management network element sends a request for creating a bearer to the source serving gateway, and the source serving gateway sends a response for creating a bearer to the source mobility management network element.
If the target network does not support the emergency service, the access network element may be notified in a handover preparation failure message (handover failure) that the target network does not support the emergency service. And the subsequent access network element re-initiates the switching in the PS domain or initiates the SRVCC switching to switch the ongoing emergency service of the UE from the PS domain to the CS domain.
For the UE without SRVCC capability, or under the condition that the UE cannot be found to support emergency service within a specific time, the cell may be carried in the message to indicate that the UE cannot complete handover, and after receiving the cell, the UE may initiate handover of the non-3 GPP network.
The embodiment of the invention judges whether the target network supports the emergency service according to the emergency service information supported by the target network to be switched by the UE, and determines whether the UE is allowed to be switched to the target network according to the judgment result so as to ensure that the emergency service is not interrupted due to the switching of the UE.
Example six:
referring to fig. 6, a sixth embodiment of the present invention provides an emergency service processing method, in which an access network element initiates SRVCC handover when knowing that a UE in a limited state is performing an emergency service, and the method specifically includes:
601. and the access network element in the source network acquires the service limitation indication of the UE.
In this step, a manner in which the access network element of the source network acquires the service restriction indication of the UE is similar to the five implementation manners in step 201 of embodiment two, and details are not repeated here.
602. When the UE is informed of needing to perform network switching, an access network element in a source network determines that the UE is performing emergency service according to the APR information, and acquires a service limitation indication of the UE in advance to know that the UE is in a limited state.
603. If the UE has the SRVCC capability, initiating SRVCC switching, and switching the emergency service which the UE is carrying out from the PS domain to the CS domain.
The specific implementation manner of this step is similar to the corresponding description of step 205 in the second embodiment, and is not described herein again.
In the sixth embodiment of the present invention, when it is known that the UE in the limited state is performing the emergency service, an SRVCC handover request is initiated to the mobility management network element, so that the emergency service being performed by the UE is handed over from the PS domain to the CS domain, thereby ensuring that the emergency service is not interrupted.
Example seven:
referring to fig. 7, a sixth embodiment of the present invention provides an emergency service processing apparatus, where the emergency service processing apparatus may be located in an access network element in a source network or in a mobility management entity in the source network, and the emergency service processing apparatus includes:
a first obtaining unit 701, configured to obtain emergency service information of a network to be switched by a user equipment UE that needs to be switched;
a second obtaining unit 702, configured to obtain emergency service information of the UE;
a determining unit 703, configured to determine whether a target network supporting the UE to perform an emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE acquired in the first acquiring unit and the emergency service information of the UE acquired in the second acquiring unit;
a switching unit 704, configured to switch the emergency service performed by the UE to one of the target networks when it is determined in the determining unit that the target network supporting the UE to perform the emergency service exists in the network to be switched by the UE.
The emergency service information of the network to be switched by the UE comprises a service limitation reason indication supported by the network to be switched by the UE, and the emergency service information of the UE comprises the service limitation reason indication of the UE; at this time, the determining unit 703 is configured to determine whether a network matching the service restriction cause indication of the UE exists in the network to be switched of the UE according to whether the service restriction cause indication supported by the network to be switched of the UE matches the service restriction cause indication of the UE, where the network matching the service restriction cause indication of the UE is the target network.
Or the emergency service information of the network to be switched by the UE comprises an indication whether the network to be switched by the UE supports the emergency service, and the emergency service information of the UE comprises an indication that the emergency service exists in the UE.
Preferably, when the emergency service processing apparatus is located in an access network element in the source network, the apparatus further includes: a first message sending unit 705, configured to send, when the UE has an SRVCC capability and a target network that supports the UE to perform an emergency service does not exist in a network to be switched by the UE, an SRVCC handover request to a mobility management network element in a source network to request to handover the emergency service that the UE is performing from a packet switched PS domain to a circuit switched CS domain; or, a second message sending unit, configured to send a notification message to the UE to notify the UE to initiate handover of the non-3 GPP network.
The emergency service processing device in the seventh embodiment of the present invention determines whether a target network supporting the UE to perform the emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE, and if so, switches the UE to the target network, so as to ensure that the emergency service is not interrupted due to the switching of the UE.
Example eight:
referring to fig. 8, an eighth embodiment of the present invention provides an emergency service processing apparatus, where the emergency service processing apparatus may be located in a target mobility management network element in a target network, and the apparatus includes:
an obtaining unit 801, configured to obtain emergency service information of a user equipment UE that needs to be switched;
a determining unit 802, configured to determine whether the target network supports the UE to perform an emergency service according to the emergency service information of the UE acquired by the acquiring unit and the emergency service information of the target network to be switched by the UE;
a sending unit 803, configured to send, according to the determination result of the determining unit, information about whether the target network supports the UE to perform the emergency service to a source network where the UE is currently located.
Wherein the emergency service information of the UE comprises an indication that the UE has the emergency service, and the emergency service information of the target network comprises an indication whether the target network supports the emergency service.
Or, the emergency service information of the UE includes a service restriction reason indication of the UE, and the emergency service information of the target network includes a service restriction reason indication supported by the target network, at this time, the determining unit 803 is configured to determine whether the service restriction reason indication supported by the target network matches the service restriction reason indication of the UE, and if so, determine that the target network supports the UE to perform the emergency service.
Preferably, the sending unit 803 is configured to send, to a mobility management network element in the source network, information whether the target network supports the emergency service.
The eighth embodiment of the present invention determines whether the target network supports the UE to perform the emergency service according to the emergency service information of the target network to be switched by the UE and the emergency service information of the UE, and notifies the source network of the determination result (information whether the target network supports the UE to perform the emergency service), so that the source network can determine whether to approve the UE to be switched to the target network according to the determination result, thereby ensuring that the emergency service is not interrupted due to the switching of the UE.
Example nine:
referring to fig. 9, a ninth embodiment of the present invention provides an emergency service processing apparatus, where the emergency service processing apparatus may be located in an access network element, and the apparatus includes:
a determining unit 901, configured to determine that a user equipment UE with SRVCC capability is in a limited state and is performing an emergency service when the UE needs to perform handover;
a sending unit 902, configured to initiate an SRVCC handover request to a mobility management network element to request to handover the emergency service being performed by the UE from the PS domain to the CS domain after the determining unit determines that the UE is in the limited state and is performing the emergency service.
The ninth embodiment of the present invention, when determining that the UE in the limited state is performing the emergency service, initiates an SRVCC handover request to a mobility management network element, so as to switch the emergency service being performed by the UE from a PS domain to a CS domain, thereby ensuring that the emergency service is not interrupted.
Example ten:
an embodiment of the present invention provides a network system, including: a mobility management network element in a source network, a mobility management network element in a target network, wherein,
the mobile management network element of the target network is used for receiving the emergency service information of the UE needing to be switched, which is sent by the mobile management network element in the source network, determining whether the target network supports the UE to perform the emergency service according to the emergency service information of the UE and the emergency service information of the target network, and sending the information whether the target network supports the UE to perform the emergency service to the mobile management network element in the source network;
the mobile management network element in the source network is used for sending the emergency service information of the UE needing to be switched to the mobile management network element in the target network, receiving the information whether the target network supports the UE to perform the emergency service and sent by the mobile management network element in the target network, and informing the access network element in the source network whether the target network supports the UE to perform the emergency service or not according to the information whether the target network supports the UE to perform the emergency service or not.
The emergency service information of the UE includes: an indication that the UE has an emergency service; the emergency service information of the target network includes: an indication of whether the target network supports emergency services;
or, the emergency service information of the UE includes: a traffic restriction cause indication of the UE; the emergency service information of the target network includes: a service restriction reason indication supported by the target network;
in the tenth embodiment of the present invention, the mobility management network element in the target network determines whether the target network supports the UE to perform the emergency service according to the emergency service information of the target network and the emergency service information of the UE, and notifies the source network of the determination result (information whether the target network supports the UE to perform the emergency service), so that the source network can determine whether to approve the UE to be switched to the target network according to the determination result, thereby ensuring that the emergency service is not interrupted due to the switching of the UE.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by hardware that is instructed to implement by a program, and the program may be stored in a computer-readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like.
The method, the device and the network system for processing the emergency service provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the description to explain the principle and the embodiment of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (20)
1. An emergency service processing method, comprising:
acquiring emergency service information of a network to be switched of User Equipment (UE) needing to be switched and the emergency service information of the UE;
and determining whether a target network supporting the UE to perform the emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE and the emergency service information of the UE, and if so, switching the emergency service performed by the UE to one of the target networks.
2. The method according to claim 1, wherein when the emergency service information of the network to be switched by the UE includes the indication of the service limitation reason supported by the network to be switched by the UE, and the emergency service information of the UE includes the indication of the service limitation reason of the UE,
the determining whether a target network supporting the UE to perform emergency services exists in the network to be switched by the UE includes:
and determining whether a network matched with the service limitation reason indication of the UE exists in the network to be switched of the UE according to whether the service limitation reason indication supported by the network to be switched of the UE is matched with the service limitation reason indication of the UE, wherein the network matched with the service limitation reason indication of the UE is the target network.
3. The method of claim 1,
the emergency service information of the network to be switched by the UE comprises an indication whether the network to be switched by the UE supports the emergency service, and the emergency service information of the UE comprises an indication that the emergency service exists in the UE.
4. The method of claim 1,
when the access network element of the source network determines that a target network supporting the UE to perform emergency service does not exist in the network to be switched by the UE, the method further comprises the following steps:
if the UE has the continuous SRVCC capability of the voice call with single wireless access, an access network element of a source network sends an SRVCC switching request to a mobility management network element in the source network so as to switch the ongoing emergency service of the UE from a Packet Switching (PS) domain to a Circuit Switching (CS) domain; or,
and the access network element of the source network informs the UE to initiate the switching of the non-third generation partnership project 3GPP network.
5. The method according to any of claims 1 to 4, wherein the obtaining the emergency service information of the network to be switched of the user equipment UE needing to be switched comprises:
an access network element of a source network receives emergency service information of a network to be switched of the UE, which is sent by a mobility management network element, wherein the emergency service information of the network to be switched of the UE is pre-configured on the mobility management network element;
or,
before UE needs to be switched, an access network element of a source network receives emergency service information of a network to be switched of the UE, which is sent by a mobility management network element in the source network; the emergency service information of the network to be switched by the UE is sent to a mobility management network element in the source network by a mobility management network element in a target network in the switching process of the UE before the current switching;
or,
the access network element of the source network acquires emergency service information of a network to be switched by the UE, which is pre-configured on the access network element of the source network.
6. An emergency service processing method, comprising:
acquiring emergency service information of User Equipment (UE) needing to be switched;
determining whether the target network supports the UE to perform emergency service according to the emergency service information of the UE and the emergency service information of the target network to be switched by the UE;
and sending the information whether the target network supports the UE to perform the emergency service to a source network where the UE is currently located.
7. The method of claim 6,
the emergency service information of the UE comprises an indication that the UE has the emergency service, and the emergency service information of the target network comprises an indication whether the target network supports the emergency service.
8. The method of claim 6,
when the emergency service information of the UE comprises the service limitation reason indication of the UE and the emergency service information of the target network comprises the service limitation reason indication supported by the target network,
the determining whether the target network supports the UE to perform the emergency service according to the emergency service information of the UE and the emergency service information of the target network to be switched by the UE includes:
and determining whether the service limitation reason indication supported by the target network is matched with the service limitation reason indication of the UE, and if so, determining that the target network supports the UE to perform emergency service.
9. The method of claim 6,
the sending the information whether the target network supports the emergency service to the network where the UE is currently located includes:
a mobility management network element in a target network sends information whether the target network supports emergency services to a mobility management network element in a source network;
and the mobility management network element in the source network sends the information whether the target network supports the emergency service to the access network element in the source network.
10. The method of claim 9,
when the target network does not support the UE for emergency service, the method further comprises:
an access network element of a source network re-determines a network capable of supporting the UE to perform emergency service, and when the network capable of supporting the UE to perform emergency service is not found within a preset time period, an indication that switching cannot be completed is sent to the UE, so that the UE initiates switching of a non-3 GPP network;
or,
if the UE has the SRVCC capability, an access network element of a source network initiates SRVCC switching;
or,
and the access network element of the source network informs the UE to initiate the switching of the non-3 GPP network.
11. An emergency service processing method, comprising:
when User Equipment (UE) with SRVCC capability needs to be switched, determining that the UE is in a limited state and is carrying out emergency service;
and initiating an SRVCC switching request to a mobility management network element, and switching the ongoing emergency service of the UE from the PS domain to the CS domain.
12. An emergency service processing apparatus, comprising:
a first obtaining unit, configured to obtain emergency service information of a network to be switched of a user equipment UE that needs to be switched;
a second obtaining unit, configured to obtain emergency service information of the UE;
a determining unit, configured to determine whether a target network supporting the UE to perform an emergency service exists in the network to be switched of the UE according to the emergency service information of the network to be switched of the UE acquired by the first acquiring unit and the emergency service information of the UE acquired by the second acquiring unit;
and the switching unit is used for switching the emergency service performed by the UE to one of the target networks when the determining unit determines that the target network supporting the emergency service performed by the UE exists in the network to be switched by the UE.
13. The apparatus of claim 12,
the emergency service information of the network to be switched by the UE comprises service limitation reason indication supported by the network to be switched by the UE, and the emergency service information of the UE comprises the service limitation reason indication of the UE;
the determining unit determines whether a network matched with the service limitation reason indication of the UE exists in the network to be switched of the UE according to whether the service limitation reason indication supported by the network to be switched of the UE is matched with the service limitation reason indication of the UE, wherein the network matched with the service limitation reason indication of the UE is the target network.
14. The apparatus of claim 12,
the emergency service information of the network to be switched by the UE comprises an indication whether the network to be switched by the UE supports the emergency service, and the emergency service information of the UE comprises an indication that the emergency service exists in the UE.
15. The apparatus of claim 12, wherein the emergency service processing apparatus is located in an access network element in a source network, and the apparatus further comprises:
a first message sending unit, configured to send, when the UE has an SRVCC capability and a target network that supports the UE to perform an emergency service does not exist in a network to be switched by the UE, an SRVCC handover request to a mobility management network element in a source network, so as to switch the emergency service that the UE is performing from a packet switched PS domain to a circuit switched CS domain;
or,
a second message sending unit, configured to send a notification message to the UE to notify the UE to initiate handover of the non-3 GPP network.
16. An emergency service processing apparatus, located in a target network to be switched by a UE, includes:
an obtaining unit, configured to obtain emergency service information of a user equipment UE that needs to be switched;
a determining unit, configured to determine whether the target network supports the UE to perform an emergency service according to the emergency service information of the UE acquired by the acquiring unit and the emergency service information of the target network to be switched by the UE;
and the sending unit is used for sending the information whether the target network supports the UE to carry out the emergency service to the source network where the UE is currently located according to the determination result of the determining unit.
17. The apparatus of claim 16,
the emergency service information of the UE comprises an indication that the UE has the emergency service, and the emergency service information of the target network comprises an indication whether the target network supports the emergency service.
18. The apparatus of claim 16,
when the emergency service information of the UE comprises the service limitation reason indication of the UE and the emergency service information of the target network comprises the service limitation reason indication supported by the target network,
the determining unit determines whether the service limitation reason indication supported by the target network is matched with the service limitation reason indication of the UE, and if so, determines that the target network supports the UE to perform emergency service.
19. An emergency service processing apparatus, comprising:
a determining unit, configured to determine that a user equipment UE with SRVCC capability is in a restricted state and is performing an emergency service when the UE needs to perform handover;
a sending unit, configured to initiate an SRVCC handover request to a mobility management network element after the determining unit determines that the UE is in the limited state and is performing an emergency service, and handover the emergency service being performed by the UE from a PS domain to a CS domain.
20. A network system, comprising: a mobility management network element in a source network, a mobility management network element in a target network, wherein,
the mobility management network element of the target network is used for receiving the emergency service information of the UE needing to be switched, which is sent by the mobility management network element in the source network, determining whether the target network supports the UE to perform the emergency service according to the emergency service information of the UE and the emergency service information of the target network, and sending the information whether the target network supports the UE to perform the emergency service to the mobility management network element in the source network;
the mobility management network element in the source network is configured to send emergency service information of the UE that needs to be switched to a mobility management network element in a target network, receive information that is sent by the mobility management network element in the target network and used for determining whether the target network supports the UE to perform the emergency service, and notify an access network element in the source network whether the target network supports the UE to perform the emergency service according to the information that whether the target network supports the UE to perform the emergency service.
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| CN2009101421581A CN101902715A (en) | 2009-06-01 | 2009-06-01 | Emergency service processing method, equipment and network system |
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| CN102026133A (en) * | 2010-12-30 | 2011-04-20 | 华为技术有限公司 | Emergency call processing method, device and system |
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| CN102026133A (en) * | 2010-12-30 | 2011-04-20 | 华为技术有限公司 | Emergency call processing method, device and system |
| WO2014134916A1 (en) * | 2013-03-06 | 2014-09-12 | 华为技术有限公司 | Method and device for achieving congestion control |
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| CN108200618A (en) * | 2018-01-30 | 2018-06-22 | 广东欧珀移动通信有限公司 | cell switching control method, device and storage medium and mobile terminal |
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| WO2023109791A1 (en) * | 2021-12-15 | 2023-06-22 | 展讯通信（上海）有限公司 | Cell handover method and device |
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