CN117294679A

CN117294679A - IMS service acquisition method, terminal, network equipment and medium

Info

Publication number: CN117294679A
Application number: CN202210691846.9A
Authority: CN
Inventors: 王慧; 康艳超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2023-12-26
Also published as: WO2023241614A1

Abstract

The application discloses an IMS service acquisition method, a terminal, network side equipment and a medium, which belong to the technical field of communication, and the IMS service acquisition method comprises the following steps: the terminal receives URSP rules from network side equipment; the terminal acquires IMS information through URSP rules; the terminal establishes a PDU session and an IMS signaling connection for an IMS service based on the IMS information.

Description

IMS service acquisition method, terminal, network equipment and medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to an IMS service acquisition method, a terminal, network side equipment and a medium.

Background

Currently, during the use of an internet protocol multimedia subsystem (Internet protocol multimedia subsystem, IMS) service by a terminal, the terminal first registers with a 5G system (fifth-generation system,5 GS), obtains allowable network slice selection assistance information (network slice selection assistance information, nsai) from an access and mobility management function (access and mobility management function, AMF) entity, and selects a 5G network slice based on the nsai to establish a protocol data unit (protocol data unit, PDU) session through the 5G network slice, and then accesses the IMS through a user plane function (user plane function, UPF) entity, finally achieving the acquisition of IMS services. However, when the terminal uses the IMS service, the 5G network slice does not relate to the IMS network functional entity, and how to obtain the IMS service through the two-layer network slice architecture in order to provide corresponding quality of service guarantee for different IMS service types is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides an IMS service acquisition method, a terminal, network side equipment and a medium, which can solve the problem of acquiring IMS service through a two-layer network slicing architecture.

In a first aspect, an IMS service acquisition method is provided, applied to a terminal, the method including: the terminal receives URSP rules from network side equipment; the terminal acquires IMS information through URSP rules; the terminal establishes a PDU session and an IMS signaling connection for an IMS service based on the IMS information.

In a second aspect, there is provided an IMS service acquisition apparatus, the apparatus comprising: the device comprises a receiving module, an obtaining module and an establishing module. The receiving module is used for receiving URSP rules from the network side equipment; the acquisition module is used for acquiring the IMS information through the URSP rules received by the receiving module; the establishing module is used for establishing PDU session and IMS signaling connection for IMS service based on the IMS information acquired by the acquiring module.

In a third aspect, an IMS service obtaining method is provided, which is applied to a network side device, and the method includes: the network equipment sends URSP rules to the terminal; wherein the URSP rule comprises IMS information; the IMS information is used for the terminal to establish PDU sessions for IMS services and IMS signaling connections.

In a fourth aspect, there is provided an IMS service acquisition apparatus, comprising: and a transmitting module. The sending module is used for sending URSP rules to the terminal; wherein the URSP rule comprises IMS information; the IMS information is used for the terminal to establish PDU sessions for IMS services and IMS signaling connections.

In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the communication interface is configured to receive a urs p rule from a network side device; the processor is configured to obtain IMS information via the urs p rule, and establish a PDU session and an IMS signaling connection for an IMS service based on the IMS information.

In a seventh aspect, a network side device is provided, comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method according to the third aspect.

An eighth aspect provides a network side device, including a processor and a communication interface, where the communication interface is configured to send a urs rule to a terminal; wherein the URSP rule comprises IMS information; the IMS information is used for the terminal to establish PDU sessions for IMS services and IMS signaling connections.

In a ninth aspect, there is provided a communication system comprising: a terminal and a network side device, the terminal being operable to perform the steps of the IMS service acquisition method according to the first aspect, the network side device being operable to perform the steps of the IMS service acquisition method according to the third aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect, or performs the steps of the method according to the third aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the third aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the IMS service acquisition method according to the first aspect.

In the embodiment of the application, the terminal may receive the urs p rule from the network side device, and acquire IMS information through the urs p rule, so as to establish a PDU session and an IMS signaling connection for IMS service based on the IMS information. According to the scheme, the terminal can acquire the IMS information through the URSP rule, and establish PDU session and IMS signaling connection for IMS service based on the IMS information, so that the IMS service is acquired by using the 5G network slice and the IMS network slice, and the service quality of the IMS service is further ensured.

Drawings

FIG. 1 is a schematic diagram of one possible communication system architecture provided by an embodiment of the present application;

fig. 2 is a flowchart of an IMS service obtaining method according to an embodiment of the present application;

fig. 3 is one of schematic structural diagrams of an IMS service obtaining apparatus according to an embodiment of the present application;

fig. 4 is a second schematic structural diagram of an IMS service obtaining apparatus according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 6 is a schematic hardware structure of a terminal according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a network side device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

The IMS service acquisition method provided in the embodiments of the present application is described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.

1) Network slice

Network slicing creates different logical partitions for the network and satisfies various service requirements through appropriate network isolation and specific configuration. In the existing protocol, the slicing operation of the terminal mainly comprises the following steps: AMF is selected at initial registration, and allowable single network slice assistance information is obtained in the process, then the terminal selects slices according to network slice selection policies (network slice selection policy, NSSP) in terminal routing policies (user equipment route selection policy, URSP) rules, and queries or selects relevant NF according to slice information to request establishment of PDU session.

2)IMS

The 5GS itself does not provide voice services, and the terminal uses voice services through the 5GS access IMS. For 5GS, both IMS signaling and IMS media belong to user plane data, i.e. the terminal needs to establish user plane resources in 5GS before using IMS voice services. The user establishes a PDU session with DNN of IMS, and flows IMS signaling data including IMS registration signaling and IMS call signaling through a quality of service (quality of service, qoS) of "5G quality of service identifier (fifth-generation QoS identifier,5 QI) =5". In the calling process, the IMS network triggers the network to establish a corresponding QoS flow to transmit IMS media data according to different IMS service types through the PCRF.

In the prior art, a terminal firstly registers in 5GS, acquires allowable nsai from an AMF entity, selects a 5G network slice based on the nsai to establish a PDU session through the 5G network slice, and then accesses IMS through UPF to finally realize acquisition of IMS service. However, when the terminal uses the IMS service, the 5G network slice does not involve the IMS network functional entity, and how to obtain the IMS service through the two-layer network slice architecture is a challenge to provide the same QoS guarantee for different IMS services through different QoS flows in order to provide corresponding quality of service guarantees for different IMS service types (e.g. real-time audio, real-time video, instant messaging, etc.).

In order to solve the above technical problems, the embodiments of the present application provide a method for a terminal to obtain IMS services using a two-layer network slice architecture, that is, adding an IMS network slice on the basis of an original 5G network slice, so that a complete IMS network function is used based on the IMS network slice. Specifically, IMS information is added in the urs p rule, so that the terminal obtains the IMS information through the urs p rule, and based on the IMS information, a PDU session and an IMS signaling connection for an IMS service are established, thereby obtaining the IMS service using the 5G network slice and the IMS network slice.

An embodiment of the present application provides an IMS service obtaining method, and fig. 2 shows a flowchart of the IMS service obtaining method provided in the embodiment of the present application. As shown in fig. 2, the IMS service acquisition method provided in the embodiment of the present application includes the following steps 201 to 204.

Step 201, the network device sends a urs rule to the terminal.

In this embodiment of the present application, IMS information is included in the above-mentioned urs rule; the IMS information is used for the terminal to establish PDU sessions for IMS services and IMS signaling connections.

In the embodiment of the application, the terminal can receive the URSP rule from the network side equipment and acquire the IMS information through the URSP rule so as to establish PDU session and IMS signaling connection for IMS service based on the IMS information, thereby realizing acquisition of IMS service by using the 5G network slice and the IMS network slice.

Optionally, in the embodiment of the present application, the oss rule may be preconfigured on the terminal for the network side device, or may be configured currently for the terminal for the network side device.

Optionally, in an embodiment of the present application, the IMS information includes at least one of the following: IMS slice information, P-CSCF address indication information, data network name of IMS.

Wherein the P-CSCF address indication information is used to indicate the address of the P-CSCF (e.g. the IP address of the P-CSCF).

Optionally, in an embodiment of the present application, the IMS slice information may include an identifier of an IMS slice; the P-CSCF address indication information is used to indicate entry information of an IMS service requested by the terminal. The P-CSCF is an entry point for the UE to request IMS services from the IMS network.

Optionally, in an embodiment of the present application, the IMS slice information includes single network slice assistance information (single network slice selection assistance information, S-nsai), where the S-nsai includes a Slice Service Type (SST) and a slice identifier (slice differentiator, SD);

wherein, the service type indicated by the SST is IMS, and the SD is used for indicating the type of IMS service; alternatively, the service type indicated by the SST is a service type other than IMS, and the SD is used to indicate the type of IMS service.

It should be noted that, the above-mentioned service type indicated by SST is IMS and may be understood as: the IMS type added in SST. The above SST indicated service type being a service type other than IMS can be understood as: the original service type in SST.

Illustratively, as shown in table 1, an IMS type is newly added in SST.

Table 1 service types and characteristics indicated by SST

Optionally, in the embodiment of the present application, different IMS services are distinguished by different SDs, for example, multimedia telephony (MMTel) voice service (MMTel voice), multimedia telephony video service (MMTel video), mobile Originating (MO) IMS registration related signaling (MO IMS registration related signalling), which respectively correspond to different SD codes, and the specific coding manner depends on the implementation of the operator.

Step 202, the terminal receives the urs p rule from the network side device.

And 203, the terminal acquires IMS information through URSP rules.

Optionally, in the embodiment of the present application, the terminal may acquire IMS information from the urs rules.

Optionally, in the embodiment of the present application, in a case that the IMS information includes IMS slice information, an IMS slice selection component is included in a routing descriptor (route selection descriptor, RSD) in the urs rule, and the IMS slice information is included in the IMS slice selection component, or the IMS slice information is included in a network slice selection component in the RSD.

It can be understood that the network side device may add an IMS slice selection component to the RSD in the traffic descriptor (traffic descriptor) of the urs p rule, and the terminal may obtain IMS slice information from the IMS slice selection component; or, the network side device may add IMS slice information to a network slice selection (network slice selection) component in the RSD, and the terminal may obtain IMS slice information from the network slice selection component.

Optionally, in an embodiment of the present application, the IMS slice selecting component is configured to indicate an IMS slice that an IMS session matches. In particular, the IMS slice selection component is operative to indicate that traffic for a matching IMS service should be routed through support of any IMS session containing IMS S-nsai. At least one IMS S-NSSAI is included in the IMS slice selection component.

That is, the network side device may add a new component to the RSD, where IMS slice information is included in the new component, or add IMS slice information to an original component in the RSD.

Illustratively, as shown in table 2, the network side device adds a IMS slice selection component in the RSD, the IMS slice selection component including IMS slice information therein; alternatively, the network side device adds IMS slice information in network slice selection component in RSD.

TABLE 2RSD and related description

Optionally, in the embodiment of the present application, the terminal may acquire IMS information and 5G slice information through a urs rule. In one implementation manner, under the condition that the network side equipment adds IMS slice information in a network slice selection component in the RSD, the terminal can acquire the IMS information and 5G slice information through the network slice selection component; in another implementation manner, in the case that the network side device adds an IMS slice selection component in the RSD, the terminal may obtain 5G slice information through the network slice selection component, and obtain IMS information through the IMS slice selection component.

Optionally, in the embodiment of the present application, in a case where the IMS information includes P-CSCF address indication information, a P-CSCF selection component is included in the RSD in the urs rule, and the P-CSCF selection component includes P-CSCF address indication information.

It can be appreciated that the network side device may add a P-CSCF selection component to the RSD in the traffic descriptor of the urs P rule, and the terminal may obtain the P-CSCF address indication information from the P-CSCF selection component.

Optionally, in an embodiment of the present application, the P-CSCF selection component is configured to indicate a P-CSCF with which an IMS session matches. And, the P-CSCF selection component is to indicate that traffic for the matching IMS service should be routed through support of any IMS session containing the P-CSCF IP address. The P-CSCF selection component includes one or more P-CSCF IP addresses.

That is, the network side device may add a new component to the RSD, where the new component includes P-CSCF address indication information.

Illustratively, as shown in table 3, the network side device adds a P-CSCF selection component in RSD, which includes P-CSCF address indication information therein.

TABLE 3RSD and related description

Optionally, in the embodiment of the present application, before the step 203, the IMS service obtaining method provided in the embodiment of the present application further includes the following step 301.

Step 301, the terminal acquires IMS service indication information.

Wherein the IMS service indication information includes at least one of: an application identifier of IMS service, demand indication information and IMS connection capability indication information;

The above-mentioned demand indication information is used for indicating the type of IMS service;

the IMS connection capability indication information is used for requesting network connection with IMS capability;

the IMS information is information matching with the type of IMS service in the urs rule.

Optionally, in the embodiment of the present application, the terminal acquiring IMS service indication information may include: the terminal receives IMS service indication information from an upper layer. Alternatively, the "upper layer" may be a NAS layer, an RRC layer, or an application layer, and embodiments of the present application are not specifically limited.

Optionally, in the embodiment of the present application, the types of IMS services may be real-time audio services, real-time video services, instant messaging, and so on. The specific determination may be determined according to actual use requirements, and the embodiments of the present application are not limited.

Optionally, in an embodiment of the present application, the above-mentioned urs rule includes a traffic descriptor matching with IMS service indication information, or an application descriptor in the urs rule includes information matching with IMS service indication information.

It can be understood that the IMS information may be a traffic descriptor matched with IMS service indication information in the urs p rule; alternatively, the IMS information may be information matching the IMS service indication information in the application descriptor in the urs rule.

Optionally, in the embodiment of the present application, the information matching with IMS service indication information may be: information matching the application identity of the IMS service and/or information matching the requirement indication information.

Illustratively, assume that the information matching the IMS service indication information is: information matching the demand indication information. As shown in table 4, the urs rule includes a traffic descriptor (traffic descriptor), IMS service requirement indication, matching the requirement indication information, or the application descriptor (application descriptors) in the urs rule includes information matching the IMS service indication information, IMS service requirement indication.

Table 4 traffic descriptors and related description

Alternatively, in the embodiment of the present application, the foregoing IMS service requirement indication may be in a form of an IMS service identifier (IMS service ID) or an IMS service type (IMS service type), and may also be in any other possible form, specifically may be determined according to actual use requirements, which is not limited in the embodiment of the present application.

According to the embodiment of the application, the terminal can acquire the IMS information matched with the IMS service indication information from the URSP rule based on the IMS service indication information, and establish PDU session and IMS signaling connection for the IMS service based on the IMS information, so that the IMS service is acquired by using the 5G network slice and the IMS network slice, and the service quality of the IMS service is further ensured.

The method for acquiring the IMS information by the terminal according to the urs rule in the embodiment of the present application is specifically described below based on different IMS service indication information.

Optionally, in an embodiment of the present application, in the first case, the IMS service indication information includes requirement indication information. The above step 203 may be specifically implemented by the following step 203 a.

Step 203a, the terminal determines a first urs rule and a second urs rule from the urs rules according to the requirement indication information.

Wherein the IMS information is information in a second URSP rule; the first URSP rule is used for establishing PDU session, and the second URSP rule is used for establishing IMS signaling connection.

Optionally, in the embodiment of the present application, in a first implementation manner, the terminal may determine, according to the requirement indication information, a first urs rule and a second urs rule from the urs rules; in a second implementation manner, the terminal may determine a first urs rule according to the requirement indication information, and determine a second urs rule according to the requirement indication information and the IMS connection capability indication information; in a third implementation manner, the terminal may determine a first urs rule according to the requirement indication information and the IMS connection capability indication information, and determine a second urs rule according to the requirement indication information; in a fourth implementation manner, the terminal may determine the first urs p rule and the second urs p rule according to the requirement indication information and the IMS connection capability indication information.

Optionally, in this embodiment of the present application, the first urs rule and the second urs rule have the same data network name, so as to associate the PDU session with the IMS signaling connection.

In the embodiment of the application, the terminal can determine the first URSP rule and the second URSP rule from the URSP rules according to the demand indication information so as to establish PDU session by using the first URSP rule and establish IMS signaling connection by using the second URSP rule, thereby realizing the acquisition of IMS service by using the 5G network slice and the IMS network slice, and further ensuring the service quality of the IMS service.

Optionally, in the embodiment of the present application, in the second case, the IMS service indication information includes an application identifier and requirement indication information. The above step 203 may be specifically realized by the following steps 203b and 203 c.

Step 203b, the terminal determines a first urs rule from the urs rules according to the application identifier.

And 203c, the terminal determines a second URSP rule from the URSP rules according to the requirement indication information.

Illustratively, as shown in table 5, the terminal may determine, according to the application identifier, a urs rule (i.e., a first urs rule) of the application identifier APP3, and determine, according to the requirement indicating information, that the requirement indicating information is a urs rule (i.e., a second urs rule) of the IMS service 3.

TABLE 5URSP rules and related description

Optionally, in an embodiment of the present application, the IMS service indication information may further include IMS connection capability indication information. The above step 203b may be specifically realized by the following step 203b1, and the above step 203c may be specifically realized by the following step 203c 1.

Step 203b1, the terminal determines a first urs rule from the urs rules according to the application identifier and the IMS connection capability indication information.

In step 203c1, the terminal determines a second urs rule from the urs rules according to the requirement indication information and the IMS connection capability indication information.

Optionally, in the embodiment of the present application, after determining the first urs p rule, the terminal may determine a third RSD from the first urs p rule; and, after determining the second urs rule, the terminal may determine a fourth RSD from the second urs rule.

Optionally, in the embodiment of the present application, the terminal may determine the third RSD from the first urs p rule and determine the fourth RSD from the second urs p rule according to a preference indication of the IMS service, configuration information of the terminal, and the like. In addition, the terminal may determine the third RSD and the fourth RSD according to other information of the IMS service, and specifically may determine the third RSD and the fourth RSD according to actual use requirements, which is not limited in the embodiments of the present application.

It can be appreciated that the third RSD is: the RSD in the first urs rule that is the best match with the current IMS service, i.e. the best RSD in the first urs rule; the fourth RSD is: the RSD in the second urs rule that best matches the current IMS service, i.e. the best RSD in the second urs rule.

In the embodiment of the application, the terminal can determine the first URSP rule from the URSP rules according to the application identifier, and determine the second URSP rule from the URSP rules according to the requirement indication information, so as to establish PDU session by using the first URSP rule and establish IMS signaling connection by using the second URSP rule, thereby realizing the acquisition of IMS service by using the 5G network slice and the IMS network slice, and further ensuring the service quality of the IMS service.

Optionally, in an embodiment of the present application, in a third case, the IMS service indication information includes application identification or requirement indication information. The above step 203 may be specifically realized by the following steps 203d and 203 e.

And 203d, the terminal determines a third URSP rule from the URSP rules according to the application identifier or the requirement indication information.

Step 203e, the terminal determines the first RSD and the second RSD from the third urs p rule.

Wherein, the IMS information is information in a second RSD; the first RSD is used for establishing a PDU session, and the second RSD is used for establishing an IMS signaling connection.

For example, as shown in table 6, assuming that the IMS service indication information includes the requirement indication information, the terminal may determine that the requirement indication information is a urs rule (i.e., a third urs rule) of the IMS service3 according to the requirement indication information, and determine an RSD (i.e., a first RSD) belonging to the PDU session and an RSD (i.e., a second RSD) belonging to the IMS signaling connection from the urs rule.

TABLE 6URSP rules and related description

Optionally, in an embodiment of the present application, the IMS service indication information may further include IMS connection capability indication information. Namely, the terminal determines a third URSP rule from the URSP rules according to the application identifier and the IMS connection capability indication information; or the terminal determines a third URSP rule from the URSP rules according to the requirement indication information and the IMS connection capability indication information.

Optionally, in the embodiment of the present application, the terminal may determine the first RSD and the second RSD from the third urs p rule according to a preference indication of the IMS service, configuration information of the terminal, and the like. In addition, the terminal may further determine the first RSD and the second RSD from the third urs p rule according to other information of the IMS service, and specifically may be determined according to an actual use requirement, which is not limited in the embodiments of the present application.

It can be appreciated that the first RSD and the second RSD are: the two RSDs in the third urs rule that best match the current IMS service, i.e. the best two RSDs.

In the embodiment of the application, the terminal can determine the third URSP rule from the URSP rules according to the application identifier or the demand indication information, and determine the first RSD and the second RSD from the second URSP rule, so that PDU session is established by using the first RSD, IMS signaling connection is established by using the second RSD, thereby realizing the acquisition of IMS service by using the 5G network slice and the IMS network slice, and further ensuring the service quality of the IMS service.

Step 204, the terminal establishes PDU session and IMS signaling connection for IMS service based on IMS information.

Optionally, in the embodiment of the present application, the terminal may establish a PDU session for IMS service according to the 5G slice information in the urs p rule, and establish an IMS signaling connection according to the IMS information in the urs p rule.

Optionally, in the embodiment of the present application, the terminal may carry IMS information (including S-nsai indicating IMS) in the PDU session establishment request message, and send the IMS information to the UPF through the SMF, so that the UPF accesses an appropriate P-CSCF according to the P-CSCF address indication information in the IMS information, and thus the P-CSCF may select other IMS network elements according to the IMS slice information in the IMS information.

It should be noted that, in the conventional scheme, since the PDU session establishment request message only carries the S-nsai of the 5G system and does not carry IMS information, the SMF generally selects a P-CSCF for the terminal according to information such as an operator policy, a local configuration, and the like, so that the UPF accesses the P-CSCF. Compared with the traditional scheme, in the embodiment of the application, the appropriate P-CSCF can be selected for the terminal according to the IMS information, and for different IMS services, different P-CSCFs can be selected for the terminal, namely, for each IMS service, the customized P-CSCF can be selected for the terminal, so that customized resource allocation is provided for different IMS services, the service requirements of different IMS services are met, and therefore more efficient and high-quality IMS services can be provided for the terminal.

Alternatively, in the embodiment of the present application, the terminal may perform registration and session initialization procedures based on IMS information. And, when different IMS services arrive, the UE uses different IMS services through the established PDU and different bearers.

Alternatively, in the embodiment of the present application, the terminal may first establish a PDU session, and then establish an IMS signaling connection, so as to use an IMS service.

The embodiment of the application provides an IMS service acquisition method, wherein a terminal can receive URSP rules from network side equipment and acquire IMS information through the URSP rules so as to establish PDU session and IMS signaling connection for IMS service based on the IMS information. According to the scheme, the terminal can acquire the IMS information through the URSP rule, and establish PDU session and IMS signaling connection for IMS service based on the IMS information, so that the IMS service is acquired by using the 5G network slice and the IMS network slice, and the service quality of the IMS service is further ensured.

Optionally, in the embodiment of the present application, before the step 201, the IMS service obtaining method provided in the embodiment of the present application further includes steps 401 to 404 described below.

Step 401, the terminal sends IMS slicing capability indication information to the network side device.

In the embodiment of the present application, the IMS slice capability indication information is used to indicate that the terminal supports using IMS services based on IMS slices.

Optionally, in the embodiment of the present application, the terminal may perform a registration process in the 5G system, and send IMS slicing capability indication information to the network side device in the registration process.

Optionally, in the embodiment of the present application, the IMS slicing capability indication information may be transmitted during initial registration of the terminal; alternatively, the IMS slicing capability indication information may be transmitted during a mobility registration update procedure.

Step 402, the network side device receives IMS slicing capability indication information sent by the terminal.

Step 403, the network side device sends a first indication message to the terminal.

In this embodiment of the present application, the first indication message is used to indicate that the terminal is allowed to use IMS services based on IMS slices.

Optionally, in the embodiment of the present application, after receiving the IMS slice capability indication information of the terminal, the network side device may indicate, to the terminal, whether to allow the terminal to use IMS services based on IMS slices, based on information such as terminal subscription, network policy, local configuration, and the like.

Step 404, the terminal receives a first indication message sent by the network side device.

In the embodiment of the application, in the process of registering, the terminal can instruct the network side equipment that the terminal supports using the IMS service based on the IMS slice, so that the terminal can only use the IMS service under the condition that the network side equipment instructs to allow the terminal to use the IMS service based on the IMS slice, thereby further ensuring the service quality of the terminal using the IMS service.

According to the IMS service acquisition method provided by the embodiment of the application, the execution main body can be an IMS service acquisition device. In the embodiment of the present application, an IMS service acquisition apparatus is described by taking an IMS service acquisition method performed by the IMS service acquisition apparatus as an example.

An embodiment of the present application provides an IMS service obtaining apparatus, applied to a terminal, as shown in fig. 3, where the IMS service obtaining apparatus 500 includes: a receiving module 501, an acquiring module 502 and a setting-up module 503. The receiving module 501 is configured to receive a urs rule from a network side device. An obtaining module 502, configured to obtain IMS information through the urs rules received by the receiving module 501. An establishing module 503, configured to establish a PDU session and an IMS signaling connection for the IMS service based on the IMS information acquired by the acquiring module 502.

According to the IMS service acquisition device provided by the embodiment of the application, the IMS information can be acquired through the URSP rule, and PDU session and IMS signaling connection for IMS service are established based on the IMS information, so that the IMS service is acquired by using the 5G network slice and the IMS network slice, and the service quality of the IMS service is further ensured.

Optionally, in an embodiment of the present application, the IMS information includes at least one of the following: IMS slice information, P-CSCF address indication information, IMS data network name; wherein the P-CSCF address indication information is for the P-CSCF address.

Optionally, in an embodiment of the present application, the IMS information includes IMS slice information;

the RSD in the above-mentioned urs rule includes an IMS slice selection component, where the IMS slice selection component includes IMS slice information, or the network slice selection component in the RSD includes IMS slice information.

Optionally, in an embodiment of the present application, the IMS information includes P-CSCF address indication information;

wherein, the RSD in the URSP rule comprises a P-CSCF selection component, and the P-CSCF selection component comprises P-CSCF address indication information.

Optionally, in the embodiment of the present application, the obtaining module 502 is further configured to obtain IMS service indication information before obtaining IMS information through a urs p rule;

Optionally, in an embodiment of the present application, the above-mentioned urs rule includes a traffic descriptor matching with IMS service indication information, or the application descriptor in the above-mentioned urs rule includes information matching with IMS service indication information.

Optionally, in an embodiment of the present application, the IMS service indication information includes requirement indication information; the acquiring module 502 is specifically configured to determine, according to the requirement indication information, a first urs rule and a second urs rule from the urs rules;

wherein the IMS information is information in a second URSP rule; the first urs rule is used to establish PDU sessions and the second urs rule is used to establish IMS signaling connections.

Optionally, in an embodiment of the present application, the IMS service indication information includes an application identifier and a requirement indication information; the obtaining module 502 is specifically configured to determine a first urs rule from the urs rules according to an application identifier; determining a second URSP rule from the URSP rules according to the demand indication information;

Optionally, in an embodiment of the present application, the IMS service indication information includes an application identifier or a requirement indication information; the obtaining module 502 is specifically configured to determine a third urs rule from the urs rules according to the application identifier or the requirement indication information; and determining a first RSD and a second RSD from the third urs p rule;

Wherein the IMS information is information in a second RSD; the first RSD is used to establish a PDU session and the second RSD is used to establish an IMS signaling connection.

Optionally, in an embodiment of the present application, the IMS slice information includes an S-nsai, where the S-nsai includes SST and SD;

Optionally, in an embodiment of the present application, the apparatus 500 further includes: and a transmitting module. And the sending module is configured to send IMS slice capability indication information to the network side device before the obtaining module 502 obtains IMS information through the urs p rule, where the IMS slice capability indication information is used to instruct the terminal to support using IMS services based on IMS slices. The receiving module 501 is further configured to receive a first indication message sent by a network side device, where the first indication message is used to indicate that the terminal is allowed to use IMS services based on IMS slicing.

The embodiment of the application also provides an IMS service acquisition apparatus, which is applied to a network side device, as shown in fig. 4, where the IMS service acquisition apparatus 600 includes: a transmitting module 601. A sending module 601, configured to send the urs rules to the terminal. Wherein the URSP rule comprises IMS information; the IMS information is used for the terminal to establish PDU sessions for IMS services and IMS signaling connections.

According to the IMS service acquisition device provided by the embodiment of the application, URSP rules comprising IMS information can be sent to the terminal, so that the terminal establishes PDU session and IMS signaling connection for IMS service based on the IMS information, thereby realizing the acquisition of IMS service by using 5G network slices and IMS network slices, and further ensuring the service quality of the IMS service.

Optionally, in an embodiment of the present application, the IMS information includes at least one of the following: IMS slice information, P-CSCF address indication information, IMS data network name; wherein the P-CSCF address indication information is used to indicate the address of the P-CSCF.

Optionally, in an embodiment of the present application, the apparatus 600 further includes: and a receiving module. A receiving module, configured to receive IMS slice capability indication information sent by the terminal before the sending module 601 sends the urs rule to the terminal, where the IMS slice capability indication information is used to instruct the terminal to support using IMS services based on IMS slices. The above-mentioned sending module 601 is further configured to send a first indication message to the terminal, where the first indication message is used to indicate that the terminal is allowed to use IMS services based on IMS slices.

The IMS service acquiring apparatus in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The IMS service acquiring device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Optionally, as shown in fig. 5, the embodiment of the present application further provides a communication device 700, including a processor 701 and a memory 702, where the memory 702 stores a program or an instruction that can be executed on the processor 701, for example, when the communication device 700 is a terminal, the program or the instruction is executed by the processor 701 to implement each step of the terminal of the embodiment of the IMS service obtaining method, and the same technical effects can be achieved. When the communication device 700 is a network side device, the program or the instruction, when executed by the processor 701, implements each step of the network side device in the above embodiment of the IMS service obtaining method, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for receiving URSP rules from network side equipment, the processor is used for acquiring IMS information through the URSP rules, and establishing PDU session and IMS signaling connection for IMS service based on the IMS information. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 6 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 800 includes, but is not limited to: at least part of the components of the radio frequency unit 801, the network module 802, the audio output unit 803, the input unit 804, the sensor 805, the display unit 806, the user input unit 807, the interface unit 808, the memory 809, and the processor 810, etc.

Those skilled in the art will appreciate that the terminal 800 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 810 by a power management system for performing functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 6 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 804 may include a graphics processing unit (Graphics Processing Unit, GPU) 8041 and a microphone 8042, with the graphics processor 8041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes at least one of a touch panel 8071 and other input devices 8072. Touch panel 8071, also referred to as a touch screen. The touch panel 8071 may include two parts, a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 801 may transmit the downlink data to the processor 810 for processing; in addition, the radio frequency unit 801 may send uplink data to the network side device. In general, the radio frequency unit 801 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 809 may be used to store software programs or instructions and various data. The memory 809 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 809 may include volatile memory or nonvolatile memory, or the memory 809 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 809 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 810 may include one or more processing units; optionally, the processor 810 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 810.

The radio frequency unit 801 is configured to receive a urs rule from a network side device. A processor 810 for obtaining IMS information via the urs rules; and establishes a PDU session and an IMS signaling connection for the IMS service based on the IMS information.

The embodiment of the application provides a terminal, which can acquire IMS information through URSP rules, and establish PDU session and IMS signaling connection for IMS service based on the IMS information, thereby realizing the acquisition of IMS service by using 5G network slices and IMS network slices, and further ensuring the service quality of IMS service.

Optionally, in the embodiment of the present application, the processor 810 is further configured to obtain IMS service indication information;

Optionally, in an embodiment of the present application, the IMS service indication information includes requirement indication information; the processor 810 is specifically configured to determine a first urs rule and a second urs rule from the urs rules according to the requirement indication information;

Optionally, in an embodiment of the present application, the IMS service indication information includes an application identifier and a requirement indication information; a processor 810, specifically configured to determine a first urs rule from the urs rules according to the application identifier; determining a second URSP rule from the URSP rules according to the demand indication information;

Optionally, in an embodiment of the present application, the IMS service indication information includes an application identifier or a requirement indication information; the processor 810 is specifically configured to determine a third urs rule from the urs rules according to the application identifier or the requirement indicating information; and determining a first RSD and a second RSD from the third urs p rule;

Optionally, in the embodiment of the present application, the radio frequency unit 801 is further configured to send IMS slice capability indication information to the network side device, where the IMS slice capability indication information is used to indicate that the terminal supports using IMS services based on IMS slices; and receiving a first indication message sent by the network side equipment, wherein the first indication message is used for indicating that the terminal is allowed to use the IMS service based on the IMS slice.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending URSP rules to the terminal; wherein the URSP rule comprises IMS information; the IMS information is used for the terminal to establish PDU sessions for IMS services and IMS signaling connections. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 7, the network side device 900 includes: a processor 901, a network interface 902, and a memory 903. The network interface 902 is, for example, a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 900 of the embodiment of the present invention further includes: instructions or programs stored in the memory 903 and executable on the processor 901, the processor 901 invokes the instructions or programs in the memory 903 to execute the method executed by each module shown in fig. 4, and achieve the same technical effects, so that repetition is avoided and thus a description thereof is omitted.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above embodiment of the IMS service obtaining method, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, implement each process of the above embodiment of the IMS service obtaining method, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above-mentioned IMS service obtaining method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides a communication system, which comprises: the terminal can be used for executing the steps of the IMS service acquisition method, and the network side device can be used for executing the steps of the IMS service acquisition method.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. An IMS service acquisition method, comprising:

the terminal receives a terminal routing strategy URSP rule from network side equipment;

the terminal acquires IMS information through the URSP rule;

and the terminal establishes a protocol data unit PDU session and IMS signaling connection for IMS service based on the IMS information.

2. The method of claim 1, wherein the IMS information comprises at least one of: IMS slice information, proxy call session control function P-CSCF address indication information, IMS data network name;

wherein the P-CSCF address indication information is used for indicating the address of the P-CSCF.

3. The method according to claim 2, wherein the IMS information comprises the IMS slice information;

the routing descriptor RSD in the urs rule includes an IMS slice selection component, where the IMS slice selection component includes the IMS slice information, or the network slice selection component in the RSD includes the IMS slice information.

4. The method according to claim 2, wherein the IMS information includes the P-CSCF address indication information;

Wherein, the RSD in the URSP rule comprises a P-CSCF selection component, and the P-CSCF selection component comprises the P-CSCF address indication information.

5. The method of claim 1, wherein prior to the terminal obtaining IMS information via the urs rules, the method further comprises:

the terminal acquires IMS service indication information;

wherein the IMS service indication information includes at least one of: the application identifier of the IMS service, the demand indication information and the IMS connection capability indication information;

the requirement indication information is used for indicating the type of the IMS service;

the IMS information is information matched with the type of the IMS service in the URSP rule.

6. The method of claim 5, wherein the urs rules include traffic descriptors that match the IMS service indication information or wherein application descriptors in the urs rules include information that matches the IMS service indication information.

7. The method according to claim 5 or 6, wherein the IMS service indication information comprises the requirement indication information;

The terminal obtains IMS information through the URSP rule, and the IMS information comprises:

the terminal determines a first URSP rule and a second URSP rule from the URSP rules according to the demand indication information;

wherein the IMS information is information in the second urs p rule; the first urs rule is used to establish the PDU session and the second urs rule is used to establish the IMS signaling connection.

8. The method according to claim 5 or 6, wherein the IMS service indication information comprises the application identity and the requirement indication information;

the terminal determines a first URSP rule from the URSP rules according to the application identifier;

the terminal determines a second URSP rule from the URSP rules according to the demand indication information;

9. The method according to claim 5 or 6, wherein the IMS service indication information comprises the application identity or the requirement indication information;

the terminal determines a third URSP rule from the URSP rules according to the application identifier or the requirement indication information;

the terminal determines a first RSD and a second RSD from the third URSP rule;

wherein the IMS information is information in the second RSD; the first RSD is configured to establish the PDU session, and the second RSD is configured to establish the IMS signaling connection.

10. The method according to claim 2, wherein the IMS slice information comprises single network slice assistance information, S-nsai, comprising a slice service type, SST, and a slice discriminator, SD;

wherein, the service type indicated by the SST is IMS, and the SD is used for indicating the type of the IMS service; alternatively, the service type indicated by the SST is a service type other than IMS, and the SD is used to indicate the type of the IMS service.

11. The method of claim 1, wherein prior to the terminal obtaining IMS information via the urs rules, the method further comprises:

the terminal sends IMS slice capability indication information to the network side equipment, wherein the IMS slice capability indication information is used for indicating the terminal to support using the IMS service based on IMS slice;

The terminal receives a first indication message sent by the network side equipment, wherein the first indication message is used for indicating that the terminal is allowed to use the IMS service based on IMS slicing.

12. An IMS service acquisition method, comprising:

the network equipment sends URSP rules to the terminal;

wherein the URSP rule comprises IMS information; the IMS information is used for the terminal to establish PDU session and IMS signaling connection for IMS service.

13. The method of claim 12, wherein the IMS information comprises at least one of: IMS slice information, P-CSCF address indication information, IMS data network name;

14. The method according to claim 13, wherein the IMS information comprises the IMS slice information;

the RSD in the urs rule includes an IMS slice selection component, where the IMS slice selection component includes the IMS slice information, or the network slice selection component in the RSD includes the IMS slice information.

15. The method according to claim 13, wherein the IMS information includes the P-CSCF address indication information;

16. The method of claim 13, wherein the IMS slice information comprises S-nsai, the S-nsai comprising SST and SD;

17. The method of claim 12, wherein before the network side device sends the urs rules to the terminal, the method further comprises:

the network side equipment receives IMS slice capability indication information sent by the terminal, wherein the IMS slice capability indication information is used for indicating the terminal to support using the IMS service based on IMS slice;

the network side equipment sends a first indication message to the terminal, wherein the first indication message is used for indicating that the terminal is allowed to use the IMS service based on IMS slicing.

18. An IMS service acquisition apparatus, comprising: the device comprises a receiving module, an acquisition module and an establishment module;

The receiving module is used for receiving URSP rules from network side equipment;

the acquisition module is used for acquiring IMS information through the URSP rules received by the receiving module;

the establishing module is configured to establish a PDU session for IMS service and IMS signaling connection based on the IMS information acquired by the acquiring module.

19. The apparatus of claim 18, wherein the IMS information comprises at least one of: IMS slice information, P-CSCF address indication information, IMS data network name;

20. The apparatus of claim 19, wherein the IMS information comprises the IMS slice information;

21. The apparatus according to claim 19, wherein the IMS information includes the P-CSCF address indication information;

the RSD of the urs rule includes a P-CSCF selection component, where the P-CSCF selection component includes the P-CSCF address indication information.

22. The apparatus of claim 18, wherein the obtaining module is further configured to obtain IMS service indication information before obtaining the IMS information via the urs rules;

23. The apparatus of claim 22, wherein the urs rules comprise traffic descriptors that match the IMS service indication information or wherein application descriptors in the urs rules comprise information that matches the IMS service indication information.

24. The apparatus according to claim 22 or 23, wherein the IMS service indication information comprises the requirement indication information;

the acquisition module is specifically configured to determine a first urs rule and a second urs rule from the urs rules according to the requirement indication information;

25. The apparatus according to claim 22 or 23, wherein the IMS service indication information comprises the application identity and the requirement indication information;

the acquisition module is specifically configured to determine a first urs rule from the urs rules according to the application identifier; determining a second URSP rule from the URSP rules according to the demand indication information;

26. The apparatus according to claim 22 or 23, wherein the IMS service indication information comprises the application identity or the requirement indication information;

the acquiring module is specifically configured to determine a third urs rule from the urs rules according to the application identifier or the requirement indication information; and determining a first RSD and a second RSD from the third urs p rule;

27. The apparatus of claim 19, wherein the IMS slice information comprises S-nsai, the S-nsai comprising SST and SD;

28. The apparatus of claim 18, wherein the apparatus further comprises: a transmitting module;

the sending module is configured to send IMS slice capability indication information to the network side device before the obtaining module obtains the IMS information through the urs p rule, where the IMS slice capability indication information is used to instruct the terminal to support using the IMS service based on IMS slices;

the receiving module is further configured to receive a first indication message sent by the network side device, where the first indication message is used to indicate that the terminal is allowed to use the IMS service based on an IMS slice.

29. An IMS service acquisition apparatus, comprising: a transmitting module;

the sending module is used for sending URSP rules to the terminal;

30. The apparatus of claim 29, wherein the IMS information comprises at least one of: IMS slice information, P-CSCF address indication information, IMS data network name;

31. The apparatus of claim 30, wherein the IMS information comprises the IMS slice information;

32. The apparatus according to claim 30, wherein the IMS information includes the P-CSCF address indication information;

33. The apparatus of claim 30, wherein the IMS slice information comprises S-nsai, the S-nsai comprising SST and SD;

34. The apparatus of claim 29, wherein the apparatus further comprises: a receiving module;

the receiving module is configured to receive IMS slice capability indication information sent by the terminal before the sending module sends the urs rule to the terminal, where the IMS slice capability indication information is used to instruct the terminal to support using the IMS service based on IMS slices;

the sending module is further configured to send a first indication message to the terminal, where the first indication message is used to indicate that the terminal is allowed to use the IMS service based on an IMS slice.

35. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the IMS service acquisition method according to any one of claims 1 to 11.

36. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the IMS service acquisition method according to any one of claims 12 to 17.

37. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implements an IMS service acquisition method according to any one of claims 1 to 11, or implements the steps of an IMS service acquisition method according to any one of claims 12 to 17.