CN110881183B

CN110881183B - Emergency service processing method and device

Info

Publication number: CN110881183B
Application number: CN201811031745.9A
Authority: CN
Inventors: 姚琴波; 夏苗方
Original assignee: Huawei Technologies Co Ltd
Current assignee: XFusion Digital Technologies Co Ltd
Priority date: 2018-09-05
Filing date: 2018-09-05
Publication date: 2021-05-18
Anticipated expiration: 2038-09-05
Also published as: CN110881183A

Abstract

An embodiment of the present application provides an emergency service method and a device, where the emergency service processing method is applied to an access network device to connect a first core network device and a second core network device, and the emergency service processing method may include the following steps: the user terminal determines a target core network device from the first core network device and the second core network device, wherein the target core network device supports emergency services; and the user terminal initiates emergency service registration to the target core network equipment through the access network equipment. By adopting the embodiment of the application, under the condition that the access network equipment can be connected with a plurality of core network equipment and the user terminal initiates the emergency service, the times that the user terminal tries to access the core network equipment can be reduced, the time delay of the emergency service is shortened, and the success rate of the emergency service is ensured.

Description

Emergency service processing method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to an emergency service processing method and an emergency service processing device.

Background

In mobile communication technology, after a user terminal (e.g., a User Equipment (UE)) enters a network, a mobile network can provide a service for the user terminal. The UE network access process can comprise three parts: (1) the process of cell search and cell selection is carried out, downlink synchronization is completed, broadcast information is read, and a cell is selected to reside; (2) in the random access process, the UE establishes uplink synchronization and initial connection with an access network; (3) and an attach (attach) process, which completes UE capability reporting, authentication request and security establishment.

With the development of mobile communication technology, fifth generation mobile communication (5)^thGeneration, 5G) system has been developed, but the current 5G system has not completely replaced the fourth low-mobile communication (4)^thGeneration, 4G), there are evolved universal terrestrial radio access network (E-UTRAN) cells in the network architecture, which can be connected to both an Evolved Packet Core (EPC) and a (5G core network, 5G CN or 5 GC). Referring specifically to fig. 1, a schematic diagram of a network architecture in which EPC and 5G CN coexist, the bold E-UTRAN in fig. 1 can be connected to both EPC and 5G CN.

The protocol provides that, for the 4G non-access stratum, a core network registration accept message (attach accept) sent by a core network to an access network may indicate an emergency service support situation of the core network, where "0" indicates that the core network does not support an emergency service, and "1" indicates that the core network supports an emergency service; for the 5G non-access stratum, a core network registration accept message (registration accept) sent by the core network to the access network may indicate a support situation of the emergency service of the core network, where "00" indicates that the core network is not supported, "01" is supported only when a New Radio (NR) is connected to the 5G CN, "10" indicates that the core network is supported when the E-UTRAN is connected to the 5G CN, and "11" indicates that the core network is supported when the NR and the E-UTRAN are connected to the 5G CN; for the 4G access layer, a System Information Block (SIB) sent by the access network to the UE may indicate an emergency service support situation of the access network.

In a scenario that the E-UTRAN can connect to both the EPC and the 5G CN, when the UE initiates an emergency service, after the UE performs the above (1) and (2) of the network access procedure, the UE initiates an emergency service registration to the core network through the access network, at this time, it is unclear whether the access network sends the emergency service registration to the EPC or the 5G CN, and it is unclear whether the access network supports the emergency service, and also the emergency service support situation of the EPC and the 5G CN. Even if the access network supports the emergency service, it is not clear whether to initiate the emergency service registration to the EPC or the 5G CN, nor the emergency service support condition of the EPC and the 5G CN, at this time, after the UE tries to access a certain core network through the access network, if the core network does not support the emergency service, the UE needs to access another core network through the access network, which causes the delay of the emergency service to be prolonged, and affects the success rate of the emergency service. In other words, in a scenario where the access network may connect to multiple different core networks, when the UE initiates an emergency service, the UE may access to the core network supporting the emergency service after multiple attempts, which may cause a delay of the emergency service to be extended, and affect a success rate of the emergency service.

Disclosure of Invention

The embodiments of the present application are directed to provide an emergency service processing method and an apparatus thereof, which can reduce the number of times that a user terminal attempts to access a core network device, shorten the time delay of an emergency service, and ensure the success rate of the emergency service when a user terminal initiates the emergency service in a scenario that an access network device can be connected to multiple core network devices.

A first aspect of an embodiment of the present application provides an emergency service processing method, where the method is applied to an access network device to connect a first core network device and a second core network device, and the method includes:

the user terminal determines target core network equipment from the first core network equipment and the second core network equipment, and the target core network equipment supports emergency services; and initiating emergency service registration to the target core network equipment through the access network equipment.

In the first aspect of the embodiment of the application, the user terminal determines the target core network device supporting the emergency service from the first core network device and the second core network device, so that the user terminal can initiate emergency service registration to the target core network device through the access network device when initiating the emergency service, thereby reducing the times of trying to access the core network device by the user terminal, shortening the time delay of the emergency service, ensuring the success rate of the emergency service, and facilitating the development of emergency rescue.

In a possible implementation manner, a user terminal receives first indication information from an access network device, where the first indication information is used to indicate emergency service support information of a first core network device and emergency service support information of a second core network device; and determining the target core network equipment from the first core network equipment and the second core network equipment according to the emergency service support information of the first core network equipment and the emergency service support information of the second core network equipment. The user terminal determines the target core network device from the first core network device and the second core network device by receiving the first indication information from the access network device, so that the user terminal can directly initiate emergency service registration to the target core network device through the access network device under the condition of initiating the emergency service.

The receiving of the first indication information from the access network device by the user terminal may be performed before the target core network device is determined, so that the user terminal determines the target core network device according to the first indication information.

In a possible implementation manner, the first indication information is carried in a system message block type1 message, that is, the access network device sends the first indication information to the user terminal through the system message block type1 message, and the system message block type1 message is a broadcast message, so that the user terminal obtains the first indication information in the cell search and cell selection processes.

In a possible implementation manner, the user terminal receives second indication information from the access network device, where the second indication information is used to indicate the core network device supporting the emergency service, which is determined by the access network device; and determining the target core network equipment from the first core network equipment and the second core network equipment according to the second indication information. The access network equipment directly informs the user terminal of the determined core network equipment supporting the emergency service, so that the user terminal directly initiates emergency service registration to the core network equipment through the access network equipment.

In a possible implementation manner, the second indication information is carried in a radio resource control RRC connection setting message, that is, the access network device informs the core network device supporting the emergency service determined by the user terminal through the RRC connection setting message, so that the user terminal directly initiates emergency service registration to the core network device through the access network device.

In a possible implementation manner, the user terminal sends an RRC connection request message to the access network device, where the RRC connection request message includes a reason for supporting establishment of an RRC connection, and the reason for supporting establishment of the RRC connection includes an emergency service, so that the access network device can select a core network device supporting the emergency service for the user terminal.

In a possible implementation manner, the first core network device or the second core network device is a 5G core network device, and the 5G core network device supports an emergency service; the user terminal selects the 5G core network device from the first core network device and the second core network device, and determines the 5G core network device as a target core network device. The default 5G core network equipment supports the emergency service, and at the moment, the user terminal can directly initiate emergency service registration to the 5G core network equipment through the access network equipment, so that the times of trying to access the core network equipment by the user terminal are reduced, and the time delay of the emergency service is shortened.

In a possible implementation manner, when determining the type of the access network device, the user terminal selects a core network device corresponding to the type of the access network device from the first core network device and the second core network device, and determines the core network device as the target core network device. For example, the access network device is an E-UTRAN device, the E-UTRAN device may be connected to both the EPC device and the 5G core network device, and at this time, the user terminal uses the EPC device as a target core network device and initiates emergency service registration to the EPC device. The 4G network architecture and protocol are mature, and compared with the access of 5G core network equipment, the access of EPC equipment has higher probability of successful emergency service registration.

A second aspect of an embodiment of the present application provides a user terminal, where the user terminal has a function of implementing the method provided in the first aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible implementation, the user terminal includes a processing unit and a transceiving unit; the processing unit is used for determining target core network equipment from the first core network equipment and the second core network equipment, and the target core network equipment supports emergency services; and the receiving and sending unit is used for initiating emergency service registration to the target core network equipment through the access network equipment.

In one possible implementation, the user terminal includes a processor, a transceiver, and a memory, where the memory stores a computer program comprising program instructions, and the processor is configured to invoke the program code to perform the following operations: determining target core network equipment from the first core network equipment and the second core network equipment, wherein the target core network equipment supports emergency services; and the control transceiver initiates emergency service registration to the target core network equipment through the access network equipment.

Based on the same inventive concept, as the principle and the beneficial effects of the ue to solve the problem can refer to the method and the beneficial effects brought by the method in the first aspect, the implementation of the apparatus can refer to the implementation of the method, and repeated details are not repeated.

A third aspect of the embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the method according to the first aspect.

A fourth aspect of the embodiments of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the method according to the first aspect.

A fifth aspect of the present embodiment provides an emergency service processing method, where the method is applied to an access network device to connect a first core network device and a second core network device, and the method includes:

the access network equipment determines the emergency service support information of the first core network equipment and the emergency service support information of the second core network equipment; and sending first indication information to the user terminal, wherein the first indication information is used for indicating the emergency service support information of the first core network equipment and the emergency service support information of the second core network equipment.

In a fifth aspect of the embodiment of the present application, the access network device notifies the user terminal of the emergency service support information of the first core network device and the emergency service support information of the second core network device when determining the emergency service support information of the first core network device and the emergency service support information of the second core network device, so that the user terminal determines a target core network device supporting the emergency service from the first core network device and the second core network device, and initiates an emergency service registration to the target core network device through the access network device when initiating the emergency service, thereby reducing the number of times that the user terminal attempts to access the core network device, shortening a time delay of the emergency service, ensuring a success rate of the emergency service, and facilitating emergency rescue.

In a possible implementation manner, the emergency service support information of the first core network device indicates that the first core network device supports the emergency service, and the emergency service support information of the second core network device indicates that the second core network device does not support the emergency service;

the access network equipment receives an emergency service registration request from a user terminal, wherein the emergency service registration request carries indication information, and the indication information is used for indicating that an emergency service is registered to the first core network equipment; and sending the emergency service registration request to the first core network equipment, and not sending the emergency service registration request to the second core network.

The emergency service registration request carries indication information so that the access network device determines to which core network device the emergency service registration request is forwarded.

A sixth aspect of the present embodiment provides an access network device, where the access network device has a function of implementing the method provided in the fifth aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible implementation manner, the access network device includes a processing unit and a transceiver unit; a processing unit, configured to determine emergency service support information of a first core network device and emergency service support information of a second core network device; and the receiving and sending unit is used for sending first indication information to the user terminal, wherein the first indication information is used for indicating the emergency service support information of the first core network equipment and the emergency service support information of the second core network equipment.

In one possible implementation, the access network device includes a processor, a transceiver, and a memory, where the memory stores a computer program comprising program instructions, and the processor is configured to invoke the program code to perform the following operations: determining emergency service support information of first core network equipment and emergency service support information of second core network equipment; and controlling the transceiver to send first indication information to the user terminal, wherein the first indication information is used for indicating the emergency service support information of the first core network equipment and the emergency service support information of the second core network equipment.

Based on the same inventive concept, as the principle and the beneficial effects of the access network device for solving the problems can refer to the method and the beneficial effects brought by the method in the fifth aspect, the implementation of the apparatus can refer to the implementation of the method, and repeated parts are not described again.

A seventh aspect of the embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the method according to the fifth aspect.

An eighth aspect of the embodiments of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the method according to the fifth aspect.

A ninth aspect of the present application provides an emergency service processing method, where the method is applied to an access network device to connect a first core network device and a second core network device, and the method includes:

the access network equipment determines target core network equipment from the first core network equipment and the second core network equipment, and the target core network equipment supports emergency services; and sending second indication information to the user terminal, wherein the second indication information is used for indicating the target core network equipment determined by the access network equipment.

In the ninth aspect of the embodiment of the present application, the access network device informs the core network device supporting the emergency service to the user terminal through the second indication information, so that the user terminal can initiate emergency service registration to the core network device through the access network device when initiating the emergency service, thereby reducing the number of times that the user terminal attempts to access the core network device, shortening the time delay of the emergency service, ensuring the success rate of the emergency service, and facilitating the development of emergency rescue.

In a possible implementation manner, the second indication information is carried in an RRC connection setting message, that is, the access network device informs the core network device supporting the emergency service, which is determined by the user terminal, through the RRC connection setting message, so that the user terminal directly initiates emergency service registration to the core network device through the access network device.

In a possible implementation manner, when receiving an RRC connection request message from a user equipment, an access network device determines a target core network from a first core network device and a second core network device; the RRC connection request message includes a reason for supporting establishment of the RRC connection, and the reason for supporting establishment of the RRC connection includes emergency services.

A tenth aspect of the embodiments of the present application provides an access network device, where the access network device has a function of implementing the method provided in the ninth aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible implementation manner, the access network device includes a processing unit and a transceiver unit; the processing unit is used for determining target core network equipment from the first core network equipment and the second core network equipment, and the target core network equipment supports emergency services; a transceiving unit, configured to send second indication information to the user terminal, where the second indication information is used to indicate the target core network device determined by the access network device

In one possible implementation, the access network device includes a processor, a transceiver, and a memory, where the memory stores a computer program comprising program instructions, and the processor is configured to invoke the program code to perform the following operations: determining target core network equipment from the first core network equipment and the second core network equipment, wherein the target core network equipment supports emergency services; and the control transceiver sends second indication information to the user terminal, wherein the second indication information is used for indicating the target core network equipment determined by the access network equipment.

Based on the same inventive concept, as the principle and the beneficial effects of the access network device for solving the problems can refer to the method and the beneficial effects brought by the ninth aspect, the implementation of the apparatus can refer to the implementation of the method, and repeated parts are not described again.

An eleventh aspect of embodiments of the present application provides a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the method according to the ninth aspect.

A twelfth aspect of embodiments of the present application provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the method of the ninth aspect described above.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

FIG. 1 is a schematic diagram of a network architecture in which EPCs and 5G CNs coexist;

FIG. 2 is a schematic diagram of a network architecture to which embodiments of the present application are applied;

fig. 3 is a schematic flowchart of an emergency service processing method according to an embodiment of the present application;

fig. 4 is a schematic flowchart of an emergency service processing method according to a second embodiment of the present application;

fig. 5 is a schematic block diagram of a user terminal provided in an embodiment of the present application;

fig. 6 is another schematic block diagram of a user terminal provided in an embodiment of the present application;

fig. 7 is a schematic block diagram of an access network device provided in an embodiment of the present application;

fig. 8 is another schematic block diagram of an access network device provided in an embodiment of the present application;

fig. 9 is a schematic block diagram of a communication device provided in an embodiment of the present application;

fig. 10 is another schematic block diagram of a communication device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Where in the description of the present application, "/" indicates a relationship where the objects associated before and after are an "or", unless otherwise stated, for example, a/B may indicate a or B; in the present application, "and/or" is only an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise specified. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple. In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

In addition, the network architecture and the application scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it can be known by a person skilled in the art that, along with the evolution of the network architecture and the appearance of a new application scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

Reference will now be made in detail to the names or terms to which the embodiments of the present application relate:

the emergency service refers to a service that provides emergency help to users in a communication network when personal/public health and safety, and life or property are in danger, and may include an emergency call service, a Commercial Mobile Alert Service (CMAS), an Earthquake and Tsunami Warning System (ETWS) service, and the like.

For example, when a vehicle has a major traffic accident, an in-vehicle emergency call (eCall) service in a vehicle can automatically dial an emergency call telephone 112 unified by european union countries or a user manually dials 112, and the information of the emergency call signal and the location of the accident vehicle is transferred to a Public Safety Answering Point (PSAP) closest to the accident location through a wireless communication network at the fastest speed, and the PSAP routes the service to a most suitable Emergency Call Center (ECC) for processing, and the ECC provides help to the help seeker quickly. The information passed to the PSAP is referred to as Minimum Set of Data (MSD) and may include location information, time, number of passengers, license plate number, and other information needed for emergency assistance.

Emergency service registration refers to attachment (attach) of emergency service. In this embodiment of the present application, a specific procedure of emergency service registration may refer to an attach procedure in a Long Term Evolution (LTE) system.

Please refer to fig. 2, which is a schematic diagram of a network architecture to which an embodiment of the present invention is applied, where the schematic diagram of the network architecture includes a user terminal 201, an access network device 202, a first core network device 203, and a second core network device 204.

The user terminal 201 may establish a communication connection with the access network device 202, and initiate an attach procedure to the core network device through the access network device 202 on the basis of establishing the connection, so as to establish a service connection with the core network device.

The user device 201 may include various handheld devices with wireless communication capabilities, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem; user Equipment (UE), subscriber unit (subscriber unit), cellular phone (cellular phone), smart phone (smart phone), wireless data card, Personal Digital Assistant (PDA) computer, tablet computer, wireless modem (modem), hand held device (hand), laptop computer (laptop computer), cordless phone (cordless phone) or Wireless Local Loop (WLL) station, Machine Type Communication (MTC) terminal, Mobile Station (MS), terminal equipment (terminal device) or relay user equipment, etc. may also be included. The relay user equipment may be, for example, a 5G home gateway (RG). The user terminal 201 may also include terminal devices in future 5G networks or networks after 5G, and the like. For convenience of description, in the embodiments of the present application, the above-mentioned devices are collectively referred to as a user terminal.

The access network device 202 is configured to implement information transfer between the user terminal 201 and a core network device. The access network device 202 may connect a first core network device 203 and a second core network device 204.

The access network device may also be referred to as a radio access network device. The access network equipment is connected with the user terminal and used for receiving the data of the user terminal and sending the data to the core network equipment. The access network device corresponds to a different device in a different communication system, e.g. in a second mobile communication (2)^nd-generation, 2G) system corresponding to 2G access network equipment, which may be a base station and a base station controller; in a third mobile communication (3)^rdGeneration, 3G) system, which may be a base station and Radio Network Controller (RNC); corresponding to the E-UTRAN device in the LTE system, it may be an evolved Node B (eNB); the corresponding 5G access network device in the 5G system may be, for example, an access network device (e.g., a gNB) in a new radio access technology (NR).

The core network mainly provides user connection, user management and service completion bearing, and serves as an interface provided by the bearing network to an external network. A core network device (CN) is a device in a core network and may include one or more devices depending on network deployment.

The core network device corresponds to different devices in different communication systems, for example, the core network device corresponds to a 3G core network device in a 3G system, and may be a serving General Packet Radio Service (GPRS) support node (SGSN) or a Gateway GPRS Support Node (GGSN); the corresponding 4G core network (EPC) device in the 4G system may be a Mobility Management Entity (MME) or a serving gateway (S-GW); the corresponding 5G core network device in the 5G system may be, for example, an access and mobility management (AMF) network element or a User Plane Function (UPF) network element.

The first core network device 203 and the second core network device 204 are different core network devices, and may use different Radio Access Technologies (RATs). For example, the first core network device 203 employs a RAT in a 4G system, and the second core network device 204 employs a RAT in a 5G system, but the access network device 202 may be connected to both the first core network device 203 and the second core network device 204.

Further, the access network device 202 may connect more than two core network devices, where the more than two core network devices employ different RATs. In other words, the embodiments of the present application may be applied to a scenario in which an access network device connects two core network devices, and may also be applied to a scenario in which an access network device connects multiple core network devices.

In this embodiment, in a possible implementation manner, the access network device 202 may carry, in the process that the user terminal 201 acquires the broadcast information, indication information for indicating whether the first core network device 203 and the second core network device 204 support the emergency service, in the broadcast information, so that when the user terminal 201 initiates the emergency service, the user terminal selects to initiate emergency service registration to the core network supporting the emergency service according to the indication information; in a possible implementation manner, the access network device 202 receives a Radio Resource Control (RRC) connection request message from the user terminal 201, where the RRC connection request message carries an RRC connection establishment cause, that is, an emergency service, selects a core network device supporting the emergency service for the user terminal 201, and informs the user terminal 201 of the selected core network device through an RRC connection setting message, so that the user terminal 201 directly initiates an emergency service registration to the core network device when initiating the emergency service registration; in a possible implementation manner, the user terminal 201 determines that 5G core network equipment exists in two core network devices connected to the access network equipment 202, and the 5G core network equipment supports emergency services by default, and can directly initiate emergency service registration to the 5G core network equipment when initiating emergency service registration; in one possible implementation, the access network device 202 is an E-UTRAN device, the user equipment is connected to the E-UTRAN device, and the user terminal 201 may preferentially initiate emergency service registration with the EPC device when initiating emergency service registration. Because the user terminal 201 initiates the emergency service registration to the core network device supporting the emergency service according to the indication of the access network device 202, it is not necessary to try to access another core network device when the attempt to access a certain core network device fails, thereby reducing the times of trying to access the core network device by the user terminal, shortening the time delay of the emergency service, and ensuring the success rate of the emergency service.

In this embodiment, the access network device 202 takes E-UTRAN devices in a 4G system as an example, the first core network device 203 and the second core network device 204 take EPC devices and 5G CN devices as examples, and the user terminal takes UE as an example for introduction.

The emergency service processing method provided in the embodiment of the present application will be specifically described below.

It should be noted that, in the following embodiments of the present application, names of messages between devices or names of parameters in messages are only an example, and other names may also be used in a specific implementation, which is not specifically limited in this embodiment of the present application.

Taking the schematic network architecture diagram shown in fig. 2 as an example, as shown in fig. 3, the schematic network architecture diagram is a flowchart of an emergency service processing method provided in the embodiment of the present application, where the method may include, but is not limited to, the following steps:

step S301, the access network device sends a system message block type1 message to the user terminal. Accordingly, the user terminal receives a system message block type1 message from the access network device.

Wherein, a System Information Block (SIB) type 1(type 1) message includes first indication information, which may be ims-emergency support-r 9. The first indication information is used to indicate the emergency service support information of the first core network device and the emergency service support information of the second core network device, that is, the first indication information is used to indicate whether the first core network device supports the emergency service and whether the second core network device supports the emergency service. For example, the E-UTRAN device may connect the EPC device and the 5G core network device, and the first indication information is used to indicate whether the EPC device supports the emergency service and whether the 5G core network device supports the emergency service.

The SIB type1 message is one of many messages broadcasted by the access network device to the user terminal, the access network device broadcasts the SIB type1 message to the cell covered by the access network device, and the user terminal is in the cell covered by the access network device. The access network device transmitting the SIB type1 message to the user terminal may be performed in a cell search and cell selection procedure.

In a possible implementation manner, the first indication information uses 2 bits to indicate whether the first core network device supports the emergency service and whether the second core network device supports the emergency service. For example, a bit is used to indicate whether the EPC device supports emergency services, where a bit of "0" indicates that the EPC device does not support emergency services, and a bit of "1" indicates that the EPC device supports emergency services; and the other bit is used for indicating whether the 5G core network equipment supports the emergency service, the bit is '0' to indicate that the 5G core network equipment does not support the emergency service, and the bit is '1' to indicate that the 5G core network equipment supports the emergency service.

Currently, the description of the ims-EmergenestSupport in the SIB type1 description field is: indicating whether a cell where the UE is located supports an Internet protocol multimedia subsystem (IMS) emergency bearer service in the limited service mode, and if not, the network does not support an IMS emergency call in the cell where the UE is located in the limited service mode. In the embodiment of the present application, the description of the ims-emergenesupport in the SIB type1 description field includes two parts, one part is used for describing the EPC, and the description of this part is as follows: indicating whether a cell where the UE is located supports an IMS emergency bearer service when accessing an EPC in a limited service mode, if not, a network does not support the IMS emergency call of the cell where the UE is located in the limited service mode; another part is used to describe the 5G core network, which is described as: and indicating whether the cell where the UE is located supports the IMS emergency bearer service when the cell where the UE is located is accessed to the 5G core network in the limited service mode, and if not, the network does not support the IMS emergency call of the cell where the UE is located in the limited service mode. In other words, the embodiment of the present application may indicate the emergency service support information of the first core network device and the second core network device to which the access network device is connected.

It can be seen that, at present, it is not distinguished which core network the cell where the UE is located is accessed to, and the access network device does not know which core network can support the emergency service, so that when the UE initiates the emergency service, it needs to try to access the core network many times to access the core network supporting the emergency service, so that the time delay of the emergency service is prolonged (i.e., the processing time is prolonged), and the success rate of the emergency service is affected. Generally, the shorter the processing time of the emergency service is, the better the processing time is, the more the emergency rescue is facilitated to be carried out, in the embodiment of the application, the access network device informs the user terminal of the emergency service support information of the first core network device and the second core network device which are connected with the access network device, and the user terminal selects the target core network device which supports the emergency service from the first core network device and the second core network device, so that the frequency of trying to access the core network device by the user terminal can be reduced, the time delay of the emergency service is shortened, the success rate of the emergency service is ensured, and the emergency rescue is facilitated to be carried out.

Before the access network device sends the system message block type1 message to the user terminal, the access network device may obtain, from the first core network device, whether the first core network device supports the emergency service, and obtain, from the second core network device, whether the second core network device supports the emergency service, thereby determining emergency service support information of the first core network device and emergency service support information of the second core network device. The method for how the access network device obtains, from the first core network device, whether the first core network device supports the emergency service is not limited in this embodiment of the present application.

Step S302, the user terminal determines the target core network equipment according to the system message block type1 message.

The user terminal determines a target core network device from the first core network device and the second core network device according to the first indication information carried by the system message block type1 message, wherein the target core network device is the first core network device or the second core network device and can support the emergency service. Specifically, the user terminal determines a target core network device from the first core network device and the second core network device according to the emergency service support information of the first core network device and the emergency service support information of the second core network device.

If the emergency service support information of the first core network device is supported and the emergency service support information of the second core network device is not supported, the user terminal determines the first core network device as a target core network device supporting the emergency service. And if the emergency service support information of the first core network equipment is not supported and the emergency service support information of the second core network equipment is supported, the user terminal determines the second core network equipment as target core network equipment supporting the emergency service.

If the emergency service support information of the first core network device is supported and the emergency service support information of the second core network device is also supported, the user terminal can randomly select one core network device from the first core network device and the second core network device as the target core network device. If the emergency service support information of the first core network device is not supported and the emergency service support information of the second core network device is not supported, the user terminal does not select the target core network device from the first core network device and the second core network device, and may select the target core network device from other core network devices, for example, the E-UTRAN device is connected with the EPC device and the 5G core network device, but the EPC device and the 5G core network device do not support the emergency service, and the user terminal may select the core network device corresponding to the 3G system as the target core network device.

The user terminal may determine the target core network device when receiving the SIB type1 message, or may determine the target core network device when the user terminal is about to initiate emergency service registration.

Step S303, the user terminal sends an emergency service registration request to the access network device. Accordingly, the access network device receives an emergency service registration request from the user terminal.

And under the condition that the target core network equipment is determined, when the user terminal is about to initiate the emergency service, the user terminal sends an emergency service registration request to the access network equipment. The emergency service registration request may carry indication information, where the indication information is used to indicate that the emergency service is registered with the target core network device, so that the access network device determines to which core network device to forward the emergency service registration request. The indication information may indicate a device identifier of the target core network device, so that the access network device sends the emergency service registration request to the corresponding core network device according to the device identifier.

The user terminal sends an emergency service registration request to the access network device, which may be performed after the user terminal successfully establishes an RRC connection with the access network device, and the emergency service registration request may be carried in an RRC connection setup complete (RRC connection setup complete) message.

Step S304, the access network device sends an emergency service registration request to the target core network device. Accordingly, the target core network device receives an emergency service registration request from the access network device.

The access network equipment sends an emergency service registration request to target core network equipment when receiving the emergency service registration request from the user terminal. It can be understood that the access network device forwards the emergency service registration request sent by the user terminal to the target core network device, but the emergency service registration request sent by the access network device to the target core network device does not carry the indication information indicating the target core network device.

The emergency service registration request sent by the access network device to the target core network device may be carried in an initial UE message (initial UE message).

When receiving the emergency service registration request from the access network device, the target core network device may establish an emergency service bearer, so that the user terminal transfers the emergency call related information to the target core network device through the emergency service bearer, and the target core network device transfers the emergency call related information to a suitable PSAP. The emergency call related information may include location information of the user terminal, an emergency call signal, time, and other related information.

If the target core network device is the first core network device, the access network device sends an emergency service registration request to the first core network device, and does not send the emergency service registration request to the second core network device. If the target core network device is a second core network device, the access network device sends an emergency service registration request to the second core network device, and does not send the emergency service registration request to the first core network device.

It is understood that steps S303 and S304 initiate emergency service registration for the user terminal to the target core network device through the access network device.

In the embodiment shown in fig. 3, the access network device broadcasts an SIB type1 message, the user terminal can obtain the emergency service support information of the first core network device and the emergency service support information of the second core network device according to the SIB type1 message, and determine a target core network device supporting the emergency service from the first core network device and the second core network device, so that the user terminal can initiate emergency service registration to the target core network device through the access network device when initiating the emergency service, thereby reducing the number of times that the user terminal attempts to access the core network device, shortening the time delay of the emergency service, ensuring the success rate of the emergency service, and facilitating emergency rescue.

In the first embodiment shown in fig. 3, the SIB type1 message is extended and updated based on the current access network E-UTRAN protocol asn.1, so that the SIB type1 message broadcasted by the access network device to the user terminal may indicate the emergency service support information of the first core network device and the emergency service support information of the second core network device, so that the user terminal determines the target core network device supporting the emergency service and initiates emergency service registration to the target core network device.

Taking the schematic network architecture diagram shown in fig. 2 as an example of the application of the embodiment of the present application, as shown in fig. 4, a schematic flow diagram of an emergency service processing method provided in the second embodiment of the present application is provided, where the method may include, but is not limited to, the following steps:

step S401, the user terminal sends an RRC connection request message to the access network device. Accordingly, the access network device receives an RRC connection request message from the user terminal.

In the random access process, the user terminal sends an RRC connection request (RRC connection request) message to the access network device, where the RRC connection request message is used to request establishment of a communication connection with the access network device.

In an embodiment of the present application, the RRC connection request message includes a reason for supporting establishment of the RRC connection, and the reason for supporting establishment of the RRC connection includes emergency services. It will be appreciated that emergency services may trigger establishment of an RRC connection between the user terminal and the access network equipment. The RRC connection request message carries a reason for supporting establishment of RRC connection, which includes the emergency service, so that the access network device can determine a target core network device supporting the emergency service.

Step S402, the access network device determines the target core network device.

When receiving an RRC connection request message carrying a reason for supporting establishment of RRC connection including an emergency service, the access network equipment determines target core network equipment in a random access process, and the target core network equipment supports the emergency service, so that a user terminal can directly access the target core network equipment.

If the first core network device or the second core network device supports the emergency service, the target core network device may determine the target core network device from the first core network device and the second core network device, where the target core network device is the first core network device or the second core network device. If the first core network device and the second core network device both support the emergency service, the target core network may determine any one of the first core network device and the second core network device as the target core network device. If neither the first core network device nor the second core network device supports the emergency service, the access network device selects one core network device supporting the emergency service from other access network devices connectable to the access network device as a target core network device.

Step S403, the access network device sends an RRC connection setup message to the user terminal, where the RRC connection setup message includes second indication information for indicating the target core network device. Accordingly, the user terminal receives an RRC connection setup message from the access network device.

The access network device may notify the user terminal of the target core network device supporting the emergency service through an RRC connection setup (RRC connection setup) message when determining the target core network device.

The RRC connection setup message includes second indication information, where the second indication information is used to indicate the target core network device determined by the access network device, so that the user terminal can directly initiate emergency service registration to the target core network device when initiating an emergency service, thereby reducing the number of times of attempting to access the core network device, shortening the time delay of the emergency service, and ensuring the success rate of the emergency service.

Step S404, the ue sends an RRC connection setup complete message to the access network device. Accordingly, the access network device receives an RRC connection setup complete message from the user terminal.

In a possible implementation manner, the user terminal sends an RRC connection setup complete message to the access network device when receiving an RRC connection setup message from the access network device. And then, when initiating the emergency service registration, the user terminal sends an emergency service registration request to the access network equipment, so that the access network equipment sends the emergency service registration request to the target core network equipment. It will be appreciated that in this manner, the RRC connection setup message is not sent simultaneously with the emergency service registration request.

In one possible implementation manner, when initiating the emergency service registration, the user terminal sends an RRC connection setup complete message to the access network device, where the RRC connection setup complete message may include an emergency service registration request. It will be appreciated that in this manner, the RRC connection setup message is sent with the emergency service registration request.

The user terminal can obtain the target core network equipment according to the second indication information under the condition of receiving the second indication information, and when the emergency service registration is initiated, the emergency service registration can be directly initiated to the target core network equipment through the access network equipment, so that the times of trying to access the core network equipment are reduced, the time delay of the emergency service is shortened, and the success rate of the emergency service is ensured.

In the embodiment shown in fig. 4, the access network device informs the user terminal of the target core network device supporting the emergency service through the RRC connection setup message, so that the user terminal can initiate emergency service registration to the target core network device through the access network device when initiating the emergency service, thereby reducing the number of times that the user terminal attempts to access the core network device, shortening the time delay of the emergency service, ensuring the success rate of the emergency service, and facilitating the emergency rescue.

The second embodiment shown in fig. 4 performs extended update on the RRC connection setup message based on the current access network E-UTRAN protocol asn.1, so that the RRC connection setup message sent by the access network device to the user terminal may indicate a target core network device supporting the emergency service, so that the user terminal initiates emergency service registration to the target core network device through the access network device.

Taking the schematic network architecture shown in fig. 2 as an example, the embodiment of the present application further provides a third embodiment, and the third embodiment performs extension update on the basis of the current 5G core network protocol asn.1.

In the current 5G core network protocol asn.1, a registration accept sent by a core network to an access network may indicate a support situation of an emergency service of the core network, where "00" indicates no support, "01" only supports when a New Radio (NR) is connected to a 5G CN, "10" indicates support when an E-UTRAN is connected to the 5G CN, and "11" indicates support when the NR and the E-UTRAN are both connected to the 5G CN. In the third updated 5G core network protocol asn.1 of the embodiment of the present application, all cells accessing the 5G CN support emergency services. It will be appreciated that the 5G core network equipment supports emergency services by default. At this time, in a scenario where the access network device connects the EPC device and the 5G core network device, when the user terminal initiates an emergency service, the access network device may not indicate which core network device the user terminal accesses, or may not indicate emergency service support information of each core network device, and when the access network device receives an emergency service registration request from the user terminal, the access network device directly forwards the emergency service registration request to the 5G core network device.

In a possible implementation manner, the user terminal may know in advance which core network device is the 5G core network device, so that when the user terminal initiates an emergency service, the emergency service registration request sent to the access network device may carry indication information indicating the 5G core network device, so that the access network device forwards the emergency service registration request to the 5G core network device. Or, when the user terminal initiates the emergency service, it may indicate that the emergency service is registered to the 5G core network device in the emergency service registration request sent to the access network device, and the access network device selects the 5G core network device and sends the emergency service registration request to the 5G core network device when receiving the emergency service registration request.

Taking the schematic network architecture diagram shown in fig. 2 as an example, the embodiment of the present application further provides a fourth embodiment, and the fourth embodiment performs extension and update on a core network describing a priority access on the basis of the current access network E-UTRAN protocol asn.1.

At present, the core network with priority access is not described in the access network E-UTRAN protocol ASN.1. In the fourth embodiment of the present application, description of a core network with a priority access is added to an access network E-UTRAN protocol asn.1, and it can be described that if a user terminal is connected to an E-UTRAN device, the E-UTRAN device can be connected to an EPC device as well as a 5G core network device, and the user terminal preferentially attempts to access the EPC device. In other words, the ue initiates an emergency service registration with the EPC device preferentially through the E-UTRAN device. Since the 4G network architecture and protocol are mature, the probability of successful emergency service registration is higher when accessing the EPC device than when accessing the 5G core network device, and therefore the description of the core network with the priority access is increased.

Furthermore, it can be deduced that the user terminal is connected to the access network device, the access network device is connected to the first core network device and the second core network device, and the user terminal preferentially tries to access the core network device corresponding to the type of the access network device, that is, the user terminal preferentially initiates emergency service registration to the core network device corresponding to the type of the access network device through the access network device. The type of the access network device refers to whether the access network device is a 4G access network device, a 5G access network device, or the like. Assuming that the type of the access network equipment is 4G access network equipment, the corresponding core network equipment is 4G core network equipment, that is, EPC equipment; and assuming that the type of the access network device is 5G access network device, the corresponding core network device is 5G core network device.

Taking the schematic network architecture shown in fig. 2 as an example, the embodiment of the present application further provides a fifth embodiment, and the fifth embodiment updates the implementation process of the user terminal.

Currently, in the process of attempting to access a core network device, a user terminal does not preferentially attempt to access which core network device, but randomly accesses one core network device, and attempts to access another core network device under the condition that the core network device does not support emergency services. In the fifth embodiment of the present application, on the premise that the protocol asn.1 and the protocol description are not changed, if the user terminal is connected to the E-UTRAN device, the E-UTRAN device may be connected to both the EPC device and the 5G core network device, and when the user terminal is implemented, when initiating an emergency service, it is preferred to attempt to access the EPC device. In other words, the user equipment can directly initiate emergency service registration to the EPC device through the E-UTRAN device with priority. Due to the fact that the 4G network architecture and the protocol are mature, compared with the 5G core network equipment, the probability of success of emergency service registration is higher when the EPC equipment is accessed, and therefore the user terminal can try to access the EPC equipment preferentially.

The difference between the fourth embodiment and the fifth embodiment is that the fourth embodiment updates the access network E-UTRAN protocol asn.1 so that the ue preferentially attempts to access the EPC device, and the fifth embodiment updates from the ue implementation perspective so that the ue preferentially attempts to access the EPC device.

The emergency service processing method provided by the embodiment of the present application is described above, and the user terminal and the access network device provided by the embodiment of the present application are described below.

Fig. 5 is a schematic block diagram of a user terminal 500 according to an embodiment of the present application, where the user terminal 500 is applied to an access network device to connect a first core network device and a second core network device, and the user terminal 500 includes a processing unit 510 and a transceiver unit 520;

a processing unit 510, configured to determine a target core network device from a first core network device and a second core network device, where the target core network device supports an emergency service;

a transceiving unit 520, configured to initiate an emergency service registration to a target core network device through an access network device.

In a possible implementation manner, the transceiver unit 520 is further configured to receive first indication information from the access network device, where the first indication information is used to indicate emergency service support information of the first core network device and emergency service support information of the second core network device;

the processing unit 510 is configured to determine a target core network device from the first core network device and the second core network device, and specifically, to determine the target core network device from the first core network device and the second core network device according to the emergency service support information of the first core network device and the emergency service support information of the second core network device.

In a possible implementation manner, the transceiver unit 520 is further configured to receive second indication information from the access network device, where the second indication information is used to indicate the core network device supporting the emergency service, which is determined by the access network device;

the processing unit 510 is configured to determine a target core network device from the first core network device and the second core network device, and specifically, determine the target core network device from the first core network device and the second core network device according to the second indication information.

In one possible implementation, the second indication information is carried in a radio resource control, RRC, connection setup message.

In a possible implementation manner, the transceiving unit 520 is further configured to send an RRC connection request message to the access network device, where the RRC connection request message includes a reason for supporting establishment of an RRC connection, and the reason for supporting establishment of the RRC connection includes an emergency service.

In a possible implementation manner, the first core network device or the second core network device is a 5G core network device, and the 5G core network device supports an emergency service;

the processing unit 510 is configured to determine a target core network device from the first core network device and the second core network device, specifically, to select a 5G core network device from the first core network device and the second core network device, and determine the 5G core network device as the target core network device.

In a possible implementation manner, the processing unit 510 is configured to determine a target core network device from the first core network device and the second core network device, and specifically, select a core network device corresponding to the type of the access network device from the first core network device and the second core network device and determine the core network device as the target core network device when the type of the access network device is determined.

The user terminal 500 may implement the functions of the user terminal in the first to fifth embodiments, and for the detailed process executed by each unit in the user terminal 500, reference may be made to the execution steps of the user terminal in the foregoing method embodiments, which are not described herein again.

It should be understood that the processing unit 510 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver unit 520 may be implemented by a transceiver or a transceiver-related circuit component.

As shown in fig. 6, an embodiment of the present application further provides a user terminal 600, where the user terminal 600 includes a processor 610, a memory 620 and a transceiver 630, where the memory 620 stores instructions or programs, and the processor 610 is configured to execute the instructions or programs stored in the memory 620. When the instructions or programs stored in the memory 620 are executed, the processor 610 is configured to perform the operations performed by the processing unit 510 in the above embodiments, and the transceiver 630 is configured to perform the operations performed by the transceiver module 520 in the above embodiments.

It should be understood that the ue 500 or the ue 600 according to the embodiment of the present application may correspond to the ue in the embodiment of the present application, and operations and/or functions of the respective modules in the ue 500 or the ue 600 are respectively for implementing the corresponding flows of the respective methods in fig. 3 and fig. 4, and are not described herein again for brevity.

Fig. 7 is a schematic block diagram of an access network device 700 provided in an embodiment of the present application, where the access network device 700 connects a first core network device and a second core network device, and the access network device 700 includes a processing unit 710 and a transceiver unit 720;

in a possible implementation manner, the processing unit 710 is configured to determine emergency service support information of a first core network device and emergency service support information of a second core network device; the transceiving unit 720 is configured to send first indication information to the user terminal, where the first indication information is used to indicate emergency service support information of the first core network device and emergency service support information of the second core network device.

Optionally, the emergency service support information of the first core network device indicates that the first core network device supports the emergency service, and the emergency service support information of the second core network device indicates that the second core network device does not support the emergency service;

the transceiver 720 is further configured to receive an emergency service registration request from the user terminal, where the emergency service registration request carries indication information, and the indication information is used to indicate that an emergency service is registered to the first core network device; and sending the emergency service registration request to the first core network equipment, and not sending the emergency service registration request to the second core network.

In a possible implementation manner, the processing unit 710 is configured to determine a target core network device from the first core network device and the second core network device, where the target core network device supports an emergency service;

the transceiving unit 720 is configured to send second indication information to the user terminal, where the second indication information is used to indicate the target core network device determined by the access network device.

Optionally, the second indication information is carried in an RRC connection setup message.

Optionally, the processing unit 720 is configured to determine a target core network device from the first core network device and the second core network device, and specifically, to determine a target core network from the first core network device and the second core network device when receiving an RRC connection request message from the user equipment; the RRC connection request message includes a reason for supporting establishment of the RRC connection, and the reason for supporting establishment of the RRC connection includes emergency services.

The access network device 700 may implement the functions of the access network device in the first to fifth embodiments, and for the detailed process executed by each unit in the access network device 700, reference may be made to the execution steps of the access network device in the foregoing method embodiments, which are not described herein again.

It should be understood that the processing unit 710 in the embodiments of the present application may be implemented by a processor or a processor-related circuit component, and the transceiver unit 720 may be implemented by a transceiver or a transceiver-related circuit component.

As shown in fig. 8, an embodiment of the present application further provides an access network device 800, where the access network device 800 includes a processor 810, a memory 820 and a transceiver 830, where the memory 820 stores instructions or programs, and the processor 810 is configured to execute the instructions or programs stored in the memory 820. When the instructions or programs stored in the memory 820 are executed, the processor 810 is configured to perform the operations performed by the processing unit 710 in the above embodiments, and the transceiver 830 is configured to perform the operations performed by the transceiver module 720 in the above embodiments.

It should be understood that the access network device 700 or the access network device 800 according to the embodiment of the present application may correspond to an access network device in the embodiment of the present application, and operations and/or functions of each module in the access network device 700 or the access network device 800 are respectively for implementing corresponding flows of each method in fig. 3 and fig. 4, and are not described herein again for brevity.

The embodiment of the application also provides a communication device, which can be a user terminal or a circuit. The communication device may be used to perform the actions performed by the user terminal in the above-described method embodiments.

When the communication device is a user terminal, fig. 9 shows a simplified structure diagram of the user terminal. For easy understanding and illustration, in fig. 9, the user terminal is exemplified by a mobile phone. As shown in fig. 9, the user terminal includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the user terminal, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds of user terminals may not have input/output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the user terminal, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 9. In an actual user terminal product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the rf circuit with transceiving function may be regarded as a transceiving unit of the user terminal, and the processor with processing function may be regarded as a processing unit of the user terminal. As shown in fig. 9, the user terminal includes a transceiving module 910 and a processing module 920. A transceiver module may also be referred to as a transceiver, a transceiving device, etc. The processing module may also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, a device in the transceiver module 910 for implementing a receiving function may be regarded as a receiving module, and a device in the transceiver module 910 for implementing a transmitting function may be regarded as a transmitting module, that is, the transceiver module 910 includes a receiving module and a transmitting module. A transceiver module may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving module may also be sometimes referred to as a receiver, or a receiving circuit, etc. The transmitting module may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiver module 910 is configured to perform the transmitting operation and the receiving operation on the user terminal side in the above method embodiments, and the processing module 920 is configured to perform other operations besides the transceiving operation on the user terminal in the above method embodiments.

For example, the transceiver module 910 is used to perform the transmitting and receiving operations of the ue side in fig. 3 and 4, and/or the transceiver module 910 is also used to perform other transceiving steps of the ue side in the embodiment of the present application. The processing module 20 is configured to execute step S302 in fig. 3, and/or the processing module 920 is further configured to execute other processing steps at the user terminal side in this embodiment.

When the communication device is a chip, the chip includes a transceiver module and a processing module. The transceiver module can be an input/output circuit and a communication interface; the processing module is a processor or a microprocessor or an integrated circuit integrated on the chip.

Fig. 10 shows another form of the present embodiment. The processing device 1000 includes modules such as a modulation subsystem, a central processing subsystem, and peripheral subsystems. The communication device in this embodiment may serve as a modulation subsystem therein. Specifically, the modulation subsystem may include a processor 1003 and an interface 1004. The processor 1003 performs the functions of the processing unit 510, and the interface 1004 performs the functions of the transceiver 520. As another variation, the modulation subsystem includes a memory 1006, a processor 1003, and a program stored on the memory 1006 and executable on the processor, and the processor 1003 implements the method at the user terminal side in the above method embodiment when executing the program. It should be noted that the memory 1006 may be non-volatile or volatile, and may be located inside the modulation subsystem or in the processing device 1000, as long as the memory 1006 can be connected to the processor 1003.

As another form of the present embodiment, there is provided a computer-readable storage medium having stored thereon instructions that, when executed, perform the method at the user terminal side in the above-described method embodiment.

As another form of the present embodiment, there is provided a computer program product containing instructions that, when executed, perform the method at the user terminal side in the above-described method embodiments.

One of ordinary skill in the art will appreciate that all or part of the processes in the methods of the above embodiments may be implemented by hardware related to instructions of a computer program, which may be stored in a computer-readable storage medium, and when executed, may include the processes of the above method embodiments. And the aforementioned storage medium includes: various media capable of storing program codes, such as ROM or RAM, magnetic or optical disks, etc.

Those of ordinary skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Claims

1. An emergency service processing method is applied to an access network device to connect a first core network device and a second core network device, and the method comprises the following steps:

a user terminal receives first indication information from the access network equipment, wherein the first indication information is used for indicating the emergency service support information of the first core network equipment and the emergency service support information of the second core network equipment;

the user terminal determines a target core network device from the first core network device and the second core network device according to the emergency service support information of the first core network device and the emergency service support information of the second core network device, wherein the target core network device supports the emergency service;

and the user terminal initiates emergency service registration to the target core network equipment through the access network equipment.

2. The method of claim 1, wherein the first indication information is carried in a system message block type1 message.

3. The method of claim 1, further comprising:

the user terminal receives second indication information from the access network equipment, wherein the second indication information is used for indicating the core network equipment which is determined by the access network equipment and supports the emergency service;

and the user terminal determines target core network equipment from the first core network equipment and the second core network equipment according to the second indication information.

4. The method of claim 3, wherein the second indication information is carried in a Radio Resource Control (RRC) connection setup message.

5. The method of claim 4, further comprising:

the user terminal sends an RRC connection request message to the access network equipment, wherein the RRC connection request message comprises reasons for supporting establishment of RRC connection, and the reasons for supporting establishment of RRC connection comprise emergency services.

6. The method of claim 1, wherein the first core network device or the second core network device is a 5G core network device, and wherein the 5G core network device supports emergency services;

the method further comprises the following steps:

and the user terminal selects the 5G core network equipment from the first core network equipment and the second core network equipment, and determines the 5G core network equipment as target core network equipment.

7. The method of claim 1, wherein the determining, by the ue, a target core network device from the first core network device and the second core network device comprises:

and under the condition that the type of the access network equipment is determined, the user terminal selects the core network equipment corresponding to the type of the access network equipment from the first core network equipment and the second core network equipment and determines the core network equipment as target core network equipment.

8. An emergency service processing method is applied to an access network device to connect a first core network device and a second core network device, and the method comprises the following steps:

the access network equipment determines the emergency service support information of the first core network equipment and the emergency service support information of the second core network equipment;

the access network equipment sends first indication information to a user terminal, wherein the first indication information is used for indicating the emergency service support information of the first core network equipment and the emergency service support information of the second core network equipment; the emergency service support information of the first core network device and the emergency service support information of the second core network device are used for the user terminal to determine a target core network device from the first core network device and the second core network device; the target core network equipment supports emergency services;

and the access network equipment receives an emergency service registration request from the user terminal and sends the emergency service registration request to the target core network equipment.

9. The method of claim 8, wherein the first indication information is carried in a system message block type1 message.

10. The method according to claim 8 or 9, wherein the emergency service support information of the first core network device indicates that the first core network device supports the emergency service, and the emergency service support information of the second core network device indicates that the second core network device does not support the emergency service;

the method further comprises the following steps:

the access network equipment receives an emergency service registration request from the user terminal, wherein the emergency service registration request carries indication information, and the indication information is used for indicating that an emergency service is registered to the first core network equipment;

and the access network equipment sends the emergency service registration request to the first core network equipment, and does not send the emergency service registration request to the second core network.

11. An emergency service processing method is applied to an access network device to connect a first core network device and a second core network device, and the method comprises the following steps:

the access network equipment determines target core network equipment from the first core network equipment and the second core network equipment, wherein the target core network equipment supports emergency services;

the access network equipment sends second indication information to the user terminal, wherein the second indication information is used for indicating the target core network equipment determined by the access network equipment; the second indication information is used for the user terminal to determine the target core network device from the first core network device and the second core network device;

12. The method of claim 11, wherein the second indication information is carried in an RRC connection setup message.

13. The method of claim 12, wherein the determining, by the access network device, a target core network device from the first core network device and the second core network device comprises:

when the access network equipment receives an RRC connection request message from the user terminal, determining a target core network from the first core network equipment and the second core network equipment; the RRC connection request message comprises reasons supporting establishment of the RRC connection, and the reasons supporting establishment of the RRC connection comprise emergency services.

14. A user terminal is characterized in that the user terminal is applied to an access network device to connect a first core network device and a second core network device, and comprises a processing unit and a transceiving unit;

the transceiver unit is configured to receive first indication information from the access network device, where the first indication information is used to indicate emergency service support information of the first core network device and emergency service support information of the second core network device;

the processing unit is configured to determine a target core network device from the first core network device and the second core network device according to the emergency service support information of the first core network device and the emergency service support information of the second core network device, where the target core network device supports an emergency service;

the transceiver unit is further configured to initiate emergency service registration to the target core network device through the access network device.

15. The user terminal of claim 14,

the transceiver unit is further configured to receive second indication information from the access network device, where the second indication information is used to indicate the core network device supporting the emergency service, which is determined by the access network device;

the processing unit is further configured to determine a target core network device from the first core network device and the second core network device according to the second indication information.

16. The ue of claim 15, wherein the second indication information is carried in a radio resource control, RRC, connection setup message.

17. The user terminal of claim 16,

the transceiver unit is further configured to send an RRC connection request message to the access network device, where the RRC connection request message includes a reason for supporting establishment of an RRC connection, and the reason for supporting establishment of the RRC connection includes an emergency service.

18. The ue of claim 14, wherein the first core network device or the second core network device is a 5G core network device, and the 5G core network device supports an emergency service;

the processing unit is further configured to select the 5G core network device from the first core network device and the second core network device, and determine the 5G core network device as a target core network device.

19. The ue of claim 14, wherein the processing unit is configured to determine a target core network device from the first core network device and the second core network device, and specifically, to select a core network device corresponding to the type of the access network device from the first core network device and the second core network device and determine the core network device as the target core network device when the type of the access network device is determined.

20. An access network device, wherein the access network device is connected to a first core network device and a second core network device, and the access network device includes a processing unit and a transceiver unit;

the processing unit is configured to determine emergency service support information of the first core network device and emergency service support information of the second core network device;

the receiving and sending unit is configured to send first indication information to a user terminal, where the first indication information is used to indicate emergency service support information of the first core network device and emergency service support information of the second core network device; the emergency service support information of the first core network device and the emergency service support information of the second core network device are used for the user terminal to determine a target core network device from the first core network device and the second core network device; the target core network equipment supports emergency services; and receiving an emergency service registration request from the user terminal, and sending the emergency service registration request to the target core network equipment.

21. The access network device of claim 20, wherein the emergency service support information of the first core network device indicates that the first core network device supports emergency services, and wherein the emergency service support information of the second core network device indicates that the second core network device does not support emergency services;

the receiving and sending unit is further configured to receive an emergency service registration request from the user terminal, where the emergency service registration request carries indication information, and the indication information is used to indicate that an emergency service is registered to the first core network device; and sending the emergency service registration request to the first core network equipment, and not sending the emergency service registration request to the second core network.

22. An access network device, wherein the access network device is connected to a first core network device and a second core network device, and the access network device includes a processing unit and a transceiver unit;

the processing unit is configured to determine a target core network device from the first core network device and the second core network device, where the target core network device supports an emergency service;

the transceiver unit is configured to send second indication information to a user terminal, where the second indication information is used to indicate the target core network device determined by the access network device; the second indication information is used for the user terminal to determine the target core network device from the first core network device and the second core network device; and receiving an emergency service registration request from the user terminal, and sending the emergency service registration request to the target core network equipment.

23. The access network device of claim 22, wherein the second indication information is carried in an RRC connection setup message.

24. The access network device according to claim 23, wherein the processing unit is configured to determine a target core network device from the first core network device and the second core network device, and specifically, to determine a target core network from the first core network device and the second core network device when receiving an RRC connection request message from the user terminal; the RRC connection request message comprises reasons supporting establishment of the RRC connection, and the reasons supporting establishment of the RRC connection comprise emergency services.

25. A user terminal comprising a memory, a processor and a program stored on the memory and executable on the processor, characterized in that the processor implements the emergency service handling method according to any of claims 1 to 7 when executing the program.

26. An access network device comprising a memory, a processor and a program stored on the memory and executable on the processor, wherein the processor when executing the program implements an emergency service handling method according to any of claims 8 to 10 or implements an emergency service handling method according to any of claims 11 to 13.

27. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out an emergency service handling method according to any one of claims 1 to 7.

28. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out an emergency service handling method according to any one of claims 8 to 10, or carries out an emergency service handling method according to any one of claims 11 to 13.