WO2023241614A1 - Ims服务获取方法、终端、网络侧设备及介质 - Google Patents

Ims服务获取方法、终端、网络侧设备及介质 Download PDF

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Publication number
WO2023241614A1
WO2023241614A1 PCT/CN2023/100132 CN2023100132W WO2023241614A1 WO 2023241614 A1 WO2023241614 A1 WO 2023241614A1 CN 2023100132 W CN2023100132 W CN 2023100132W WO 2023241614 A1 WO2023241614 A1 WO 2023241614A1
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WIPO (PCT)
Prior art keywords
ims
information
indication information
service
terminal
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PCT/CN2023/100132
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English (en)
French (fr)
Inventor
王慧
康艳超
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维沃移动通信有限公司
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Publication of WO2023241614A1 publication Critical patent/WO2023241614A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1016—IP multimedia subsystem [IMS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/10—Architectures or entities
    • H04L65/1059—End-user terminal functionalities specially adapted for real-time communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1069—Session establishment or de-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/80—Responding to QoS

Definitions

  • This application belongs to the field of communication technology, and specifically relates to an IMS service acquisition method, terminal, network side equipment and medium.
  • the terminal when a terminal uses Internet protocol multimedia subsystem (IMS) services, the terminal first registers with the 5G system (fifth-generation system, 5GS). From the access and mobility management functions (access and mobility management function (AMF) entity obtains the allowable network slice selection assistance information (NSSAI), and selects a 5G network slice based on the NSSAI to establish a protocol data unit through the 5G network slice , PDU) session, then, the terminal accesses IMS through the user plane function (UPF) entity, and finally achieves the acquisition of IMS services.
  • 5G network slicing does not involve IMS network functional entities. In order to provide corresponding service quality guarantees for different IMS service types, how to obtain IMS services through a two-layer network slicing architecture has become an urgent problem to be solved. .
  • Embodiments of the present application provide an IMS service acquisition method, terminal, network-side device and medium, which can solve the problem of obtaining IMS services through a two-layer network slicing architecture.
  • an IMS service acquisition method which is applied to a terminal.
  • the method includes: the terminal receives URSP rules from a network side device; the terminal obtains IMS information through the URSP rules; and the terminal establishes an IMS service based on the IMS information. PDU session and IMS signaling connection.
  • an IMS service acquisition device which includes: a receiving module, an acquisition module, and an establishment module.
  • the receiving module is used to receive URSP rules from the network side device;
  • the obtaining module is used to obtain IMS information through the URSP rules received by the receiving module;
  • the establishing module is used to establish an IMS service based on the IMS information obtained by the obtaining module PDU session and IMS signaling connections.
  • an IMS service acquisition method is provided, which is applied to a network side device.
  • the method includes: the network side device sends a URSP rule to the terminal; wherein the URSP rule includes IMS information; the IMS information is used for terminal establishment. PDU sessions for IMS services and IMS signaling connections.
  • an IMS service acquisition device which includes: a sending module.
  • a sending module configured to send URSP rules to the terminal; wherein the URSP rules include IMS information; the IMS information is used by the terminal to establish a PDU session and IMS signaling connection for IMS services.
  • a terminal in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the communication interface is used to receive URSP rules from a network side device; the processor is used to obtain IMS information through URSP rules, and based on the IMS information , establish a PDU session and IMS signaling connection for IMS services.
  • a network side device in a seventh aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor.
  • a network side device including a processor and a communication interface, wherein the communication interface is used to send URSP rules to the terminal; wherein the URSP rules include IMS information; the IMS information is used for the terminal to establish PDU sessions and IMS signaling connections for IMS services.
  • a communication system including: a terminal and a network side device, where the terminal can be used to perform as described in the first aspect
  • the network side device may be configured to perform the steps of the IMS service acquisition method described in the third aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the third aspect.
  • a chip in an eleventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. method, or implement a method as described in the third aspect.
  • a computer program/program product is provided, 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 as described in the first aspect Steps of the IMS service acquisition method.
  • the terminal can receive URSP rules from the network side device, and obtain IMS information through the URSP rules, so as to establish a PDU session and IMS signaling connection for IMS services based on the IMS information.
  • the terminal can obtain IMS information through URSP rules, and based on the IMS information, establish a PDU session and IMS signaling connection for IMS services, thereby achieving the use of 5G network slicing and IMS network slicing to obtain IMS services, further ensuring Service quality of IMS services.
  • Figure 1 is a schematic diagram of a possible communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a flow chart of an IMS service acquisition method provided by an embodiment of the present application.
  • FIG. 3 is one of the structural schematic diagrams of an IMS service acquisition device provided by an embodiment of the present application.
  • FIG. 4 is a second structural schematic diagram of an IMS service acquisition device provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 6 is a schematic diagram of the hardware structure of a terminal according to an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a network side device provided by an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and “second” are distinguished objects It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • 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 side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • Mobile Internet Device MID
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • VUE vehicle-mounted equipment
  • PUE pedestrian terminal
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • PC personal computers
  • teller machines or self-service Terminal devices such as mobile phones
  • wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart watches chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the network side device 12 may include an access network device or a core network device, where the access network device 12 may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or Wireless access network unit.
  • the access network device 12 may include a base station, a WLAN access point or a WiFi node, etc.
  • the base station may be called a Node B, an evolved Node B (eNB), an access point, a Base Transceiver Station (BTS), a radio Base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B, Home Evolved Node B, Transmitting Receiving Point (TRP) or all
  • eNB evolved Node B
  • BTS Base Transceiver Station
  • BSS Basic Service Set
  • ESS Extended Service Set
  • Home Node B Home Evolved Node B
  • TRP Transmitting Receiving Point
  • Core network equipment may include but is not limited to at least one of the following: 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 Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), centralized network configuration ( Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (Binding Support Function, BSF), application function (Application Function, AF), etc.
  • MME mobility management entities
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • PCF Policy Control Function
  • Network slicing creates different logical partitions of the network and serves various service needs with appropriate network isolation and specific configuration.
  • the terminal's slicing operation mainly includes the following steps: select AMF during initial registration, and obtain permissible single network slicing auxiliary information in the process, and then, the terminal selects the route according to the terminal routing policy (user equipment route selection policy,
  • the network slice selection policy (NSSP) in the URSP (URSP) rule selects a slice, and queries or selects relevant NFs based on the slice information to request the establishment of a PDU session.
  • NSP network slice selection policy
  • URSP URSP
  • 5GS itself does not provide voice services, and terminals access IMS through 5GS to use voice services.
  • both IMS signaling and IMS media belong to user plane data, that is, the terminal needs to establish user plane resources in 5GS before it can use IMS voice services.
  • QoS quality of service
  • 5QI quality of service identifier
  • the IMS network uses PCRF to trigger the network to establish corresponding QoS flows according to different IMS service types to transmit IMS media data.
  • the terminal first registers with 5GS, obtains the allowable NSSAI from the AMF entity, and selects a 5G network slice based on the NSSAI to establish a PDU session through the 5G network slice. Then, the terminal accesses IMS through UPF, and finally realizes Acquisition of IMS services.
  • 5G network slicing does not involve IMS network functional entities, and 5GS provides the same QoS guarantee for different IMS services through different QoS flows.
  • IMS service types such as real-time audio, real-time video, instant messaging, etc.
  • embodiments of the present application provide a method for a terminal to obtain IMS services using a two-layer network slicing architecture, that is, adding IMS network slicing to the original 5G network slicing, so as to use a complete IMS network slicing based on the IMS network slicing.
  • IMS network functions. Specifically, by adding IMS information to the URSP rules, the terminal obtains the IMS information through the URSP rules, and establishes a PDU session and IMS signaling connection for IMS services based on the IMS information, thereby realizing the use of 5G network slicing and IMS network slicing obtains IMS services.
  • FIG. 2 shows a flow chart of an IMS service acquisition method provided by an embodiment of the present application.
  • the IMS service acquisition method provided by the embodiment of the present application includes the following steps 201 to 204.
  • Step 201 The network side device sends the URSP rule to the terminal.
  • the above-mentioned URSP rules include IMS information; the IMS information is used by the terminal to establish a PDU session and IMS signaling connection for IMS services.
  • the terminal can receive URSP rules from the network side device, and obtain IMS information through the URSP rules, so as to establish a PDU session and IMS signaling connection for IMS services based on the IMS information, thereby realizing the use of the 5G network Slices and IMS network slices obtain IMS services.
  • the above URSP rules may be pre-configured on the terminal by the network-side device, or may be currently configured by the network-side device for the terminal.
  • the above-mentioned IMS information includes at least one of the following: IMS slice information, P-CSCF address indication information, and IMS data network name.
  • the P-CSCF address indication information is used to indicate the address of the P-CSCF (for example, the IP address of the P-CSCF).
  • the above-mentioned IMS slice information may include an identifier of the IMS slice; the above-mentioned P-CSCF address indication information is used to indicate the entry information of the IMS service requested by the terminal.
  • P-CSCF is the entry point for UE to request IMS services from the IMS network.
  • the above-mentioned IMS slice information includes single network slice selection assistance information (S-NSSAI), and the S-NSSAI includes slice service type (slice/service type, SST) and slice differentiator (SD);
  • S-NSSAI single network slice selection assistance information
  • SST slice service type
  • SD slice differentiator
  • the service type indicated by SST is IMS, and SD is used to indicate the type of IMS service; or, the service type indicated by SST is a service type other than IMS, and SD is used to indicate the type of IMS service.
  • the service type indicated by the above SST is IMS, which can be understood as: the IMS type newly added to the SST.
  • the service type indicated by the above SST is a service type other than IMS and can be understood as: the original service type in SST.
  • an IMS type is added to SST.
  • different IMS services are distinguished by different SDs, such as multimedia telephony (MMTel) voice service (MMTel voice), multimedia telephony video service (MMTel video), mobile initiated (mobile origin, MO) IMS registration related signaling (MO IMS registration related signaling) etc.
  • MMTel multimedia telephony
  • MMTel video multimedia telephony video service
  • MO IMS registration related signaling mobile initiated IMS registration related signaling
  • Step 202 The terminal receives URSP rules from the network side device.
  • Step 203 The terminal obtains IMS information through URSP rules.
  • the terminal can obtain IMS information from URSP rules.
  • the route selection descriptor (RSD) in the URSP rule includes an IMS slice selection component
  • the IMS slice selection component includes IMS slice information
  • the network slice selection component in RSD includes IMS slice information
  • the network side device can add IMS switching to the RSD in the traffic descriptor of the URSP rule.
  • Slice selection component the terminal can obtain IMS slice information from the IMS slice selection component; or, the network side device can add IMS slice information to the network slice selection (network slice selection) component in the RSD, and the terminal can obtain the IMS slice information from the network slice selection component. , obtain IMS slice information.
  • the above-mentioned IMS slice selection component is used to indicate the IMS slice matching the IMS session.
  • the IMS slice selection component is used to indicate that traffic for matching IMS services should be routed through any IMS session that supports IMS S-NSSAI.
  • the IMS slice selection component includes at least one IMS S-NSSAI.
  • the network side device can add a new component to the RSD, and the new component includes IMS slicing information, or add IMS slicing information to the original components in the RSD.
  • the network side device adds an IMS slice selection component to the RSD, and the IMS slice selection component includes IMS slice information; or, the network side device adds an IMS slice to the network slice selection component in the RSD. information.
  • the terminal can obtain IMS information and 5G slice information through URSP rules.
  • the terminal when the network side device adds IMS slice information to the network slice selection component in the RSD, the terminal can obtain the IMS information and 5G slice information through the network slice selection component; in another implementation, When the network side device adds an IMS slice selection component to the RSD, the terminal can obtain 5G slice information through the network slice selection component and obtain IMS information through the IMS slice selection component.
  • the RSD in the URSP rule includes a P-CSCF selection component
  • the P-CSCF selection component includes a P-CSCF address indication. information.
  • the network side device can add the P-CSCF selection component to the RSD in the traffic descriptor of the URSP rule, and the terminal can obtain the P-CSCF address indication information from the P-CSCF selection component.
  • the above-mentioned P-CSCF selection component is used to indicate the P-CSCF matching the IMS session. Also, the P-CSCF selection component is used to indicate that traffic for matching IMS services should be routed through support for any IMS session containing the P-CSCF IP address.
  • the P-CSCF selection component includes one or more P-CSCF IP addresses.
  • the network side device can add a new component to the RSD, and the new component includes P-CSCF address indication information.
  • the network side device adds a P-CSCF selection component to the RSD, and the P-CSCF selection component includes P-CSCF address indication information.
  • the IMS service acquisition method provided by the embodiment of the present application further includes the following step 301.
  • Step 301 The terminal obtains IMS service indication information.
  • the above-mentioned IMS service indication information includes at least one of the following: application identification of the IMS service, demand indication information, and IMS connection capability indication information;
  • the above requirement indication information is used to indicate the type of IMS service
  • the above-mentioned IMS connection capability indication information is used to request a network connection with IMS capability
  • the above IMS information is information matching the type of IMS service in the URSP rule.
  • the terminal obtaining the IMS service indication information may include: the terminal receiving the IMS service indication information from an upper layer.
  • the “upper layer” may be the NAS layer, RRC layer or application layer, which is not specifically limited in the embodiment of this application.
  • the type of the above-mentioned IMS service may be real-time audio service, real-time video service, instant messaging, etc.
  • the details can be determined according to actual usage requirements, and are not limited by the embodiments of this application.
  • the above-mentioned URSP rule includes a traffic descriptor that matches the IMS service indication information, or the application descriptor in the URSP rule includes information that matches the IMS service indication information.
  • the above IMS information may be the traffic descriptor in the URSP rule that matches the IMS service indication information; or the above IMS information may be the information in the application descriptor in the URSP rule that matches the IMS service indication information.
  • the above-mentioned information matching the IMS service indication information may be: matching the application identifier of the IMS service. configured information and/or information that matches the demand indication information.
  • the information matching the IMS service indication information is: the information matching the demand indication information.
  • the URSP rule includes a traffic descriptor that matches the requirement indication information, that is, IMS service requirement indication, or the application descriptors in the URSP rule includes a traffic descriptor that matches the IMS service indication information.
  • Information namely IMS service requirement indication.
  • the above-mentioned IMS service requirement indication may be expressed in the form of IMS service identification (IMS service ID) or IMS service type (IMS service type), and may also be in any other possible form. Specifically, it may be It is determined according to actual usage requirements and is not limited by the embodiments of this application.
  • the terminal can obtain the IMS information matching the IMS service indication information from the URSP rules based on the IMS service indication information, and based on the IMS information, establish a PDU session and IMS signaling connection for the IMS service, This enables the use of 5G network slicing and IMS network slicing to obtain IMS services, further ensuring the service quality of IMS services.
  • the method for the terminal to obtain IMS information through URSP rules in the embodiment of the present application will be specifically described below through three situations.
  • the above-mentioned IMS service indication information includes demand indication information.
  • Step 203 above this can be achieved through the following step 203a.
  • Step 203a The terminal determines the first URSP rule and the second URSP rule from the URSP rules according to the demand indication information.
  • the above-mentioned IMS information is the information in the second URSP rule; the above-mentioned first URSP rule is used to establish a PDU session, and the above-mentioned second URSP rule is used to establish an IMS signaling connection.
  • the terminal in the first implementation manner, can determine the first URSP rule and the second URSP rule from the URSP rules according to the demand indication information; in the second implementation manner, the terminal can determine the first URSP rule and the second URSP rule according to the demand indication information.
  • indication information determine the first URSP rule, and determine the second URSP rule based on the demand indication information and IMS connection capability indication information; in the third implementation manner, the terminal can determine the first URSP rule based on the demand indication information and IMS connection capability indication information.
  • URSP rules and determines the second URSP rule based on the demand indication information; in the fourth implementation manner, the terminal can determine the first URSP rule and the second URSP rule based on the demand indication information and the IMS connection capability indication information.
  • the first URSP rule and the second URSP rule have the same data network name, thereby associating the PDU session with the IMS signaling connection.
  • 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 use the first URSP rule to establish a PDU session, and use the second URSP rule to establish an IMS signaling connection.
  • This enables the use of 5G network slicing and IMS network slicing to obtain IMS services, further ensuring the service quality of IMS services.
  • the above-mentioned IMS service indication information includes application identification and requirement indication information.
  • the above step 203 can be specifically implemented through the following steps 203b and 203c.
  • Step 203b The terminal determines the first URSP rule from the URSP rules according to the application identifier.
  • Step 203c The terminal determines the second URSP rule from the URSP rules according to the demand indication information.
  • the above-mentioned IMS information is the information in the second URSP rule; the above-mentioned first URSP rule is used to establish a PDU session, and the above-mentioned second URSP rule is used to establish an IMS signaling connection.
  • the terminal can determine the URSP rule with the application identifier as APP3 (i.e., the first URSP rule) based on the application identifier, and determine the URSP rule with the requirement indication information as IMS service3 (i.e., the first URSP rule) based on the demand indication information. Second URSP rules).
  • the above-mentioned IMS service indication information may also include IMS connection capability indication information.
  • the above step 203b can be specifically implemented through the following step 203b1, and the above step 203c can be specifically implemented through the following step 203c1.
  • Step 203b1 The terminal determines the first URSP rule from the URSP rules according to the application identifier and the IMS connection capability indication information.
  • Step 203c1 The terminal determines the second URSP rule from the URSP rules according to the demand indication information and the IMS connection capability indication information.
  • the first URSP rule and the second URSP rule have the same data network name, thereby associating the PDU session with the IMS signaling connection.
  • the terminal may determine the third RSD from the first URSP rule; and, after determining the second URSP rule, the terminal may determine the third RSD from the second URSP rule. Fourth RSD.
  • the terminal may determine the third RSD from the first URSP rule and determine the fourth RSD from the second URSP rule according to the preference indication of the IMS service, the configuration information of the terminal, etc.
  • the terminal can also determine the third RSD and the fourth RSD based on other information of the IMS service. The specific determination can be based on actual usage requirements, which is not limited by the embodiments of this application.
  • the above-mentioned third RSD is: the RSD in the first URSP rule that best matches the current IMS service, that is, the optimal RSD in the first URSP rule; the above-mentioned fourth RSD is: the second URSP rule that matches the current IMS service. The most matching RSD of the service is the optimal RSD in the second URSP rule.
  • 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 demand indication information, so as to use the first URSP rule to establish the PDU session, and use
  • the second URSP rule establishes an IMS signaling connection, thereby realizing the use of 5G network slicing and IMS network slicing to obtain IMS services, further ensuring the service quality of IMS services.
  • the above-mentioned IMS service indication information includes application identification or requirement indication information.
  • the above step 203 can be specifically implemented through the following steps 203d and 203e.
  • Step 203d The terminal determines the 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 URSP rule.
  • the above-mentioned IMS information is information in the second RSD; the above-mentioned first RSD is used to establish a PDU session, and the above-mentioned second RSD is used to establish an IMS signaling connection.
  • the terminal can determine, based on the demand indication information, that the demand indication information is the URSP rule of IMS service3 (ie, the third URSP rule), and obtain the IMS service indication information from the URSP
  • the RSD belonging to the PDU session (ie, the first RSD) and the RSD belonging to the IMS signaling connection (ie, the second RSD) are determined in the rule.
  • the above-mentioned IMS service indication information may also include IMS connection capability indication information. That is, the terminal determines the third URSP rule from the URSP rules according to the application identifier and the IMS connection capability indication information; or the terminal determines the third URSP rule from the URSP rules according to the demand indication information and the IMS connection capability indication information.
  • the terminal may determine the first RSD and the second RSD from the third URSP rule according to the preference indication of the IMS service, the configuration information of the terminal, etc.
  • the terminal can also determine the first RSD and the second RSD from the third URSP rule based on other information of the IMS service. The specific determination can be based on actual usage requirements, which is not limited by the embodiments of this application.
  • first RSD and second RSD are: the two RSDs in the third URSP rule that best match the current IMS service, that is, the two optimal RSDs.
  • the terminal can obtain IMS information and 5G slice information through URSP rules.
  • the terminal when the network side device adds IMS slice information in the network slice selection component in the RSD, the terminal can The slice selection component obtains IMS information and 5G slice information; in another implementation, when the network side device adds the IMS slice selection component to the RSD, the terminal can obtain the 5G slice information through the network slice selection component, and obtain the 5G slice information through the IMS The slice selection component obtains IMS information.
  • the terminal can determine the third URSP rule from the URSP rule according to the application identification or demand indication information, and determine the first RSD and the second RSD from the second URSP rule to establish a PDU session using the first RSD. , and uses the second RSD to establish an IMS signaling connection, thereby realizing the use of 5G network slicing and IMS network slicing to obtain IMS services, further ensuring the service quality of IMS services.
  • Step 204 The terminal establishes a PDU session and IMS signaling connection for IMS services based on the IMS information.
  • the terminal can establish a PDU session for IMS services according to the 5G slice information in the URSP rules, and establish an IMS signaling connection according to the IMS information in the URSP rules.
  • the terminal can carry IMS information (including S-NSSAI indicating IMS) in the PDU session establishment request message, and send it to the UPF through SMF, so that the UPF can perform the processing according to the P-CSCF address in the IMS information.
  • IMS information including S-NSSAI indicating IMS
  • the terminal can carry IMS information (including S-NSSAI indicating IMS) in the PDU session establishment request message, and send it to the UPF through SMF, so that the UPF can perform the processing according to the P-CSCF address in the IMS information.
  • Instruction information to access the appropriate P-CSCF so that the P-CSCF can select other IMS network elements based on the IMS slice information in the IMS information.
  • the SMF since the PDU session establishment request message only carries the S-NSSAI of the 5G system and does not carry IMS information, the SMF usually selects P- for the terminal based on operator policy, local configuration and other information. CSCF, so that UPF accesses the P-CSCF.
  • an appropriate P-CSCF can be selected for the terminal based on IMS information, and for different IMS services, different P-CSCFs can be selected for the terminal. That is to say, for each IMS Service, you can select a customized P-CSCF for the terminal. In this way, customized resource configuration is provided for different IMS services, which meets the service requirements of different IMS services, thereby providing more efficient and high-quality IMS services to the terminal.
  • the terminal can perform registration and session initialization processes based on IMS information. Moreover, when different IMS services arrive, the UE uses different IMS services through the established PDU and different bearers.
  • the terminal can first establish a PDU session and then establish an IMS signaling connection to use the IMS service.
  • the embodiment of the present application provides a method for obtaining IMS services.
  • the terminal can receive URSP rules from the network side device, and obtain IMS information through the URSP rules, so as to establish a PDU session and IMS signaling connection for IMS services based on the IMS information.
  • the terminal can obtain IMS information through URSP rules, and based on the IMS information, establish a PDU session and IMS signaling connection for IMS services, thereby achieving the use of 5G network slicing and IMS network slicing to obtain IMS services, further ensuring Service quality of IMS services.
  • the IMS service acquisition method provided by the embodiment of the present application further includes the following steps 401 to 404.
  • Step 401 The terminal sends IMS slicing capability indication information to the network side device.
  • the above-mentioned IMS slice capability indication information is used to indicate that the terminal supports using IMS services based on IMS slices.
  • the terminal can perform a registration process in the 5G system, and during the registration process, send IMS slicing capability indication information to the network side device.
  • the above-mentioned IMS slicing capability indication information may be transmitted during the initial registration process of the terminal; or the above-mentioned IMS slicing capability indication information may be transmitted during the mobility registration update process.
  • Step 402 The network side device receives the IMS slicing capability indication information sent by the terminal.
  • Step 403 The network side device sends a first instruction message to the terminal.
  • the above-mentioned first indication message is used to indicate that the terminal is allowed to use IMS services based on IMS slices.
  • the network side device can indicate to the terminal whether the terminal is allowed to use IMS services based on IMS slicing based on terminal subscription, network policy, local configuration and other information.
  • Step 404 The terminal receives the first instruction message sent by the network side device.
  • the terminal can indicate to the network side device that the terminal supports the use of IMS services based on IMS slices, so that the terminal can only use IMS when the network side device indicates that the terminal is allowed to use IMS services based on IMS slices. service, thereby further ensuring the service quality of terminals using IMS services.
  • the execution subject may be an IMS service acquisition device.
  • the IMS service acquisition device executed by the IMS service acquisition method is used as an example to illustrate the IMS service acquisition device provided by the embodiment of the present application.
  • the IMS service acquisition device 500 includes: a receiving module 501, an acquisition module 502, and an establishment module 503.
  • the receiving module 501 is used to receive URSP rules from the network side device.
  • the obtaining module 502 is configured to obtain IMS information through the URSP rules received by the receiving module 501.
  • the establishment module 503 is configured to establish a PDU session and an IMS signaling connection for IMS services based on the IMS information obtained by the acquisition module 502.
  • the IMS service acquisition device can acquire IMS information through URSP rules, and based on the IMS information, establish a PDU session and IMS signaling connection for IMS services, thereby realizing acquisition using 5G network slicing and IMS network slicing. IMS service further ensures the service quality of IMS service.
  • the above-mentioned IMS information includes at least one of the following: IMS slice information, P-CSCF address indication information, and IMS data network name; wherein, the P-CSCF address indication information is used for the P-CSCF address .
  • the above-mentioned IMS information includes IMS slice information
  • the RSD in the above URSP rule includes an IMS slice selection component, and the IMS slice selection component includes IMS slice information, or the network slice selection component in the RSD includes IMS slice information.
  • the above IMS information includes P-CSCF address indication information
  • the RSD in the above URSP rule includes a P-CSCF selection component, and the P-CSCF selection component includes P-CSCF address indication information.
  • the above-mentioned acquisition module 502 is also used to acquire IMS service indication information before acquiring IMS information through URSP rules;
  • the above-mentioned IMS service indication information includes at least one of the following: application identification of the IMS service, demand indication information, and IMS connection capability indication information;
  • the above requirement indication information is used to indicate the type of IMS service
  • the above-mentioned IMS connection capability indication information is used to request a network connection with IMS capability
  • the above IMS information is information matching the type of IMS service in the URSP rule.
  • the above-mentioned URSP rule includes a traffic descriptor that matches the IMS service indication information, or the application descriptor in the above-mentioned URSP rule includes information that matches the IMS service indication information.
  • the above-mentioned IMS service indication information includes demand indication information;
  • the above-mentioned acquisition module 502 is specifically configured to determine the first URSP rule and the second URSP rule from the URSP rules according to the demand indication information;
  • the IMS information is the information in the second URSP rule; the first URSP rule is used to establish a PDU session, and the second URSP rule is used to establish an IMS signaling connection.
  • the above-mentioned IMS service indication information includes application identification and demand indication information; the above-mentioned acquisition module 502 is specifically used to determine the first URSP rule from the URSP rules according to the application identification; and according to the demand indication information , determine the second URSP rule from the URSP rules;
  • the IMS information is the information in the second URSP rule; the first URSP rule is used to establish a PDU session, and the second URSP rule is used to establish an IMS signaling connection.
  • the above-mentioned IMS service indication information includes application identification or demand indication information; the above-mentioned acquisition module 502 is specifically used to determine the third URSP rule from the URSP rules according to the application identification or demand indication information; and Determine the first RSD and the second RSD from the third URSP rule;
  • the IMS information is information in the second RSD; the first RSD is used to establish a PDU session, and the second RSD is used to establish an IMS signaling connection.
  • the above-mentioned IMS slice information includes S-NSSAI, and the S-NSSAI includes SST and SD;
  • the service type indicated by SST is IMS, and SD is used to indicate the type of IMS service; or, the service type indicated by SST is a service type other than IMS, and SD is used to indicate the type of IMS service.
  • the above-mentioned device 500 further includes: a sending module.
  • the sending module is configured to send IMS slice capability indication information to the network side device before the acquisition module 502 acquires IMS information through URSP rules.
  • the IMS slice capability indication information is used to indicate that the terminal supports using IMS services based on IMS slices.
  • the above-mentioned receiving module 501 is also configured to receive a first indication message sent by the network side device. The first indication message is used to indicate that the terminal is allowed to use IMS services based on IMS slices.
  • the embodiment of the present application also provides an IMS service acquisition device, which is applied to network side equipment.
  • the IMS service acquisition device 600 includes: a sending module 601.
  • the sending module 601 is used to send URSP rules to the terminal.
  • the URSP rules include IMS information; this IMS information is used by the terminal to establish a PDU session and IMS signaling connection for IMS services.
  • the IMS service acquisition device provided by the embodiment of the present application can send URSP rules including IMS information to the terminal, so that the terminal establishes a PDU session and IMS signaling connection for IMS services based on the IMS information, thereby realizing the use of 5G network slicing. and IMS network slicing to obtain IMS services, further ensuring the service quality of IMS services.
  • the above-mentioned IMS information includes at least one of the following: IMS slice information, P-CSCF address indication information, and IMS data network name; where the P-CSCF address indication information is used to indicate the P-CSCF the address of.
  • the above-mentioned IMS information includes IMS slice information
  • the RSD in the above URSP rule includes an IMS slice selection component, and the IMS slice selection component includes IMS slice information, or the network slice selection component in the RSD includes IMS slice information.
  • the above IMS information includes P-CSCF address indication information
  • the RSD in the above URSP rule includes a P-CSCF selection component, and the P-CSCF selection component includes P-CSCF address indication information.
  • the above-mentioned IMS slice information includes S-NSSAI, and the S-NSSAI includes SST and SD;
  • the service type indicated by SST is IMS, and SD is used to indicate the type of IMS service; or, the service type indicated by SST is a service type other than IMS, and SD is used to indicate the type of IMS service.
  • the above-mentioned device 600 further includes: a receiving module.
  • the receiving module is configured to receive the IMS slice capability indication information sent by the terminal before the sending module 601 sends the URSP rule to the terminal.
  • the IMS slice capability indication information is used to indicate that the terminal supports using IMS services based on IMS slices.
  • the above-mentioned sending module 601 is also 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 the IMS slice.
  • the IMS service acquisition device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • NAS Network Attached Storage
  • the IMS service acquisition device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2 and achieve the same technical effect. To avoid duplication, the details will not be described here.
  • this embodiment of the present application also provides a communication device 700, which includes a processor 701 and a memory 702.
  • the memory 702 stores programs or instructions that can be run on the processor 701, for example.
  • the communication device 700 is a terminal
  • the program or instruction is executed by the processor 701
  • each step of the terminal of the above IMS service acquisition method embodiment is implemented, and the same technical effect can be achieved.
  • the communication device 700 is a network-side device
  • the program or instruction is executed by the processor 701
  • it implements each step of the network-side device in the above IMS service acquisition method embodiment, and can achieve the same technical effect. To avoid duplication, it will not be repeated here. Repeat.
  • Embodiments of the present application also provide a terminal, including a processor and a communication interface.
  • the communication interface is used to receive URSP rules from a network side device.
  • the processor is used to obtain IMS information through the URSP rules, and establish an IMS service based on the IMS information. PDU session and IMS signaling connections.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 6 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, a processor 810, etc. At least some parts.
  • the terminal 800 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 810 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 6 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 804 may include a graphics processing unit (GPU) 8041 and a microphone 8042.
  • the graphics processor 8041 is responsible for the image capture device (GPU) in the video capture mode or the image capture mode. Process the image data of still pictures or videos obtained by cameras (such as cameras).
  • the display unit 806 may include a display panel 8061, which 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 a touch panel 8071 and at least one of other input devices 8072 .
  • Touch panel 8071 also known as touch screen.
  • Touch panel 8071 may include a touch detection device and a touch controller Two parts.
  • Other input devices 8072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 801 after receiving downlink data from the network side device, the radio frequency unit 801 can transmit it to the processor 810 for processing; in addition, the radio frequency unit 801 can send uplink data to the network side device.
  • the radio frequency unit 801 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 809 may be used to store software programs or instructions as well as various data.
  • the memory 809 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 809 may include volatile memory or non-volatile memory, or memory 809 may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 810 may include one or more processing units; optionally, the processor 810 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 810.
  • the radio frequency unit 801 is used to receive URSP rules from the network side device.
  • the processor 810 is configured to obtain IMS information through URSP rules; and based on the IMS information, establish a PDU session and IMS signaling connection for IMS services.
  • Embodiments of this application provide a terminal that can obtain IMS information through URSP rules, and based on the IMS information, establish a PDU session and IMS signaling connection for IMS services, thereby achieving the use of 5G network slicing and IMS network slicing to obtain IMS service, further ensuring the service quality of IMS services.
  • the processor 810 is also used to obtain IMS service indication information
  • the above-mentioned IMS service indication information includes at least one of the following: application identification of the IMS service, demand indication information, and IMS connection capability indication information;
  • the above requirement indication information is used to indicate the type of IMS service
  • the above-mentioned IMS connection capability indication information is used to request a network connection with IMS capability
  • the above IMS information is information matching the type of IMS service in the URSP rule.
  • the above-mentioned IMS service indication information includes demand indication information;
  • the processor 810 is specifically configured to determine the first URSP rule and the second URSP rule from the URSP rules according to the demand indication information;
  • the IMS information is the information in the second URSP rule; the first URSP rule is used to establish a PDU session, and the second URSP rule is used to establish an IMS signaling connection.
  • the above-mentioned IMS service indication information includes application identification and demand indication information; the processor 810 is specifically configured to determine the first URSP rule from the URSP rules according to the application identification; and according to the demand indication information, Determine the second URSP rule from the URSP rules;
  • the IMS information is the information in the second URSP rule; the first URSP rule is used to establish a PDU session, and the second URSP rule is used to establish an IMS signaling connection.
  • the above-mentioned IMS service indication information includes application identification or demand indication information; the processor 810 is specifically configured to determine the third URSP rule from the URSP rules according to the application identification or demand indication information; and from The first RSD and the second RSD are determined in the third URSP rule;
  • the IMS information is information in the second RSD; the first RSD is used to establish a PDU session, and the second RSD is used to establish an IMS signaling connection.
  • the radio frequency unit 801 is also used to send IMS slicing capability indication information to the network side device.
  • the IMS slicing capability indication information is used to instruct the terminal to support using IMS services based on IMS slicing; and receive the IMS slicing capability indication information from the network side.
  • the first instruction message sent by the device information, the first indication message is used to indicate that the terminal is allowed to use IMS services based on IMS slices.
  • Embodiments of the present application also provide a network side device, including a processor and a communication interface.
  • the communication interface is used to send URSP rules to the terminal; wherein the URSP rules include IMS information; the IMS information is used by the terminal to establish an IMS service PDU session and IMS signaling connections.
  • This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • 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 (CPRI).
  • CPRI common public radio interface
  • the network side device 900 in this embodiment of the present invention also includes: instructions or programs stored in the memory 903 and executable on the processor 901.
  • the processor 901 calls the instructions or programs in the memory 903 to execute each of the steps shown in Figure 4. The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.
  • Embodiments of the present application also provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, each process of the above IMS service acquisition method embodiment is implemented, and can achieve The same technical effects are not repeated here to avoid repetition.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above IMS service acquisition method embodiment. Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above IMS service acquisition method.
  • Each process in the example can achieve the same technical effect. To avoid repetition, we will not repeat it here.
  • Embodiments of the present application also provide a communication system, including: a terminal and a network side device.
  • the terminal can be used to perform the steps of the IMS service acquisition method as described above.
  • the network side device can be used to perform the IMS service acquisition method as described above. The steps of the service acquisition method.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

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Abstract

本申请公开了一种IMS服务获取方法、终端、网络侧设备及介质，本申请实施例的IMS服务获取方法包括：终端从网络侧设备接收URSP规则；终端通过URSP规则，获取IMS信息；终端基于IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。

Description

IMS服务获取方法、终端、网络侧设备及介质
相关申请的交叉引用
本申请主张在2022年6月17日在中国提交的中国专利申请号No.202210691846.9的优先权，其全部内容通过引用包含于此。
技术领域
本申请属于通信技术领域，具体涉及一种IMS服务获取方法、终端、网络侧设备及介质。
背景技术
目前，在终端使用网际互连协议多媒体子系统(Internet protocol multimedia subsystem，IMS)服务的过程中，终端首先在5G系统(fifth-generation system，5GS)进行注册，从接入和移动管理功能(access and mobility management function，AMF)实体获取可允许的网络切片选择辅助信息(network slice selection assistance information，NSSAI)，并基于该NSSAI选择5G网络切片，以通过该5G网络切片建立协议数据单元(protocol data unit，PDU)会话，然后，终端通过用户面功能(user plane function，UPF)实体访问IMS，最终实现IMS服务的获取。然而，当终端使用IMS服务时，5G网络切片并不会涉及IMS网络功能实体，为了给不同的IMS服务类型提供对应的服务质量保障，如何通过两层网络切片架构获取IMS服务成为亟待解决的问题。
发明内容
本申请实施例提供一种IMS服务获取方法、终端、网络侧设备及介质，能够解决通过两层网络切片架构获取IMS服务的问题。
第一方面，提供了一种IMS服务获取方法，应用于终端，该方法包括：终端从网络侧设备接收URSP规则；终端通过URSP规则，获取IMS信息；终端基于IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。
第二方面，提供了一种IMS服务获取装置，该装置包括：接收模块、获取模块和建立模块。其中，接收模块，用于从网络侧设备接收URSP规则；获取模块，用于通过接收模块接收的URSP规则，获取IMS信息；建立模块，用于基于获取模块获取的IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。
第三方面，提供了一种IMS服务获取方法，应用于网络侧设备，该方法包括：网络侧设备向终端发送URSP规则；其中，该URSP规则中包括IMS信息；该IMS信息用于终端建立用于IMS服务的PDU会话和IMS信令连接。
第四方面，提供了一种IMS服务获取装置，该装置包括：发送模块。发送模块，用于向终端发送URSP规则；其中，该URSP规则中包括IMS信息；该IMS信息用于终端建立用于IMS服务的PDU会话和IMS信令连接。
第五方面，提供了一种终端，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面，提供了一种终端，包括处理器及通信接口，其中，所述通信接口用于从网络侧设备接收URSP规则；所述处理器用于通过URSP规则，获取IMS信息，并基于IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。
第七方面，提供了一种网络侧设备，该网络侧设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第三方面所述的方法的步骤。
第八方面，提供了一种网络侧设备，包括处理器及通信接口，其中，所述通信接口用于向终端发送URSP规则；其中，该URSP规则中包括IMS信息；该IMS信息用于终端建立用于IMS服务的PDU会话和IMS信令连接。
第九方面，提供了一种通信系统，包括：终端及网络侧设备，所述终端可用于执行如第一方面所述 的IMS服务获取方法的步骤，所述网络侧设备可用于执行如第三方面所述的IMS服务获取方法的步骤。
第十方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第三方面所述的方法的步骤。
第十一方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法，或实现如第三方面所述的方法。
第十二方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的IMS服务获取方法的步骤。
在本申请实施例中，终端可以从网络侧设备接收URSP规则，并通过该URSP规则获取IMS信息，以基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。通过本方案，终端可以通过URSP规则获取IMS信息，并基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
附图说明
图1是本申请实施例提供的一种可能的通信系统架构示意图；
图2为本申请实施例提供的一种IMS服务获取方法的流程图；
图3为本申请实施例提供的一种IMS服务获取装置的结构示意图之一；
图4为本申请实施例提供的一种IMS服务获取装置的结构示意图之二；
图5为本申请实施例提供的一种通信设备的结构示意图；
图6为本申请实施例的一种终端的硬件结构示意图；
图7为本申请实施例提供的一种网络侧设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)或称为笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(ultra-mobile personal computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(augmented reality，AR)/虚拟现实(virtual reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、车载设备(VUE)、行人终端(PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(personal computer，PC)、柜员机或者自助机等终端侧设备，可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手 链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。需要说明的是，在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备12也可以称为无线接入网设备、无线接入网(Radio Access Network,RAN)、无线接入网功能或无线接入网单元。接入网设备12可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。核心网设备可以包含但不限于如下至少一项：核心网节点、核心网功能、移动管理实体(Mobility Management Entity，MME)、接入移动管理功能(Access and Mobility Management Function，AMF)、会话管理功能(Session Management Function，SMF)、用户平面功能(User Plane Function，UPF)、策略控制功能(Policy Control Function，PCF)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)、边缘应用服务发现功能(Edge Application Server Discovery Function，EASDF)、统一数据管理(Unified Data Management，UDM)，统一数据仓储(Unified Data Repository，UDR)、归属用户服务器(Home Subscriber Server，HSS)、集中式网络配置(Centralized network configuration，CNC)、网络存储功能(Network Repository Function，NRF)，网络开放功能(Network Exposure Function，NEF)、本地NEF(Local NEF，或L-NEF)、绑定支持功能(Binding Support Function，BSF)、应用功能(Application Function，AF)等。需要说明的是，在本申请实施例中仅以NR系统中的核心网设备为例进行介绍，并不限定核心网设备的具体类型。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的IMS服务获取方法进行详细地说明。
1)网络切片
网络切片为网络创建不同的逻辑分区，并通过适当的网络隔离和特定的配置来满足各种服务需求。现有协议中，终端的切片操作主要包括以下步骤：初始注册时选择AMF，并在此过程中获得可允许的单网络切片辅助信息，然后，终端根据终端路由选择策略(user equipment route selection policy，URSP)规则中的网络切片选择策略(network slice selection policy，NSSP)选择切片，并根据切片信息查询或选择相关NF，以请求建立PDU会话。
2)IMS
5GS本身不提供语音服务，终端通过5GS接入IMS使用语音服务。对于5GS而言，IMS信令和IMS媒体都属于用户面数据，即终端需要在5GS中建立用户面资源后才能使用IMS语音服务。用户建立DNN为IMS的PDU会话，通过“5G服务质量标识(fifth-generation QoS identifier，5QI)＝5”的服务质量(quality of service，QoS)流传输IMS信令数据，包括IMS注册信令和IMS呼叫信令等。在呼叫过程中，IMS网络通过PCRF，根据不同的IMS服务类型，触发网络建立对应的QoS流以传输IMS媒体数据。
现有技术中，终端首先在5GS进行注册，从AMF实体获取可允许的NSSAI，并基于该NSSAI选择5G网络切片，以通过该5G网络切片建立PDU会话，然后，终端通过UPF访问IMS，最终实现IMS服务的获取。然而，当终端使用IMS服务时，5G网络切片并不会涉及IMS网络功能实体，并且，5GS通过不同的QoS流为不同的IMS服务提供相同的QoS保障，为了给不同的IMS服务类型(如实时音频、实时视频、即时消息等)提供对应的服务质量保障，如何通过两层网络切片架构获取IMS服务成为亟待解决的问题。
为了解决上述技术问题，本申请实施例提供了一种终端使用两层网络切片架构获取IMS服务的方法，即，在原有5G网络切片的基础上增加IMS网络切片，从而基于IMS网络切片使用完整的IMS网络功能。具体地，通过在URSP规则中增加IMS信息，以使得终端通过该URSP规则获取IMS信息，以基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务。
本申请实施例提供一种IMS服务获取方法，图2示出了本申请实施例提供的一种IMS服务获取方法的流程图。如图2所示，本申请实施例提供的IMS服务获取方法包括下述的步骤201至步骤204。
步骤201、网络侧设备向终端发送URSP规则。
本申请实施例中，上述URSP规则中包括IMS信息；该IMS信息用于终端建立用于IMS服务的PDU会话和IMS信令连接。
本申请实施例中，终端可以从网络侧设备接收URSP规则，并通过该URSP规则获取IMS信息，以基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务。
可选地，本申请实施例中，上述URSP规则可以为网络侧设备预配置在终端的，也可以为网络侧设备为终端当前配置的。
可选地，本申请实施例中，上述IMS信息包括以下至少之一：IMS切片信息，P-CSCF地址指示信息，IMS的数据网名称。
其中，该P-CSCF地址指示信息用于指示P-CSCF的地址(例如P-CSCF的IP地址)。
可选地，本申请实施例中，上述IMS切片信息可以包括IMS切片的标识；上述P-CSCF地址指示信息用于指示终端请求的IMS服务的入口信息。P-CSCF是UE向IMS网络请求IMS服务的入口点。
可选地，本申请实施例中，上述IMS切片信息包括单网络切片辅助信息(single network slice selection assistance information，S-NSSAI)，该S-NSSAI包括切片服务类型(slice/service type，SST)和切片区分符(slice differentiator，SD)；
其中，SST指示的服务类型为IMS，SD用于指示IMS服务的类型；或者，SST指示的服务类型为除IMS之外的服务类型，SD用于指示IMS服务的类型。
需要说明的是，上述SST指示的服务类型为IMS可以理解为：SST中新增的IMS类型。上述SST指示的服务类型为除IMS之外的服务类型可以理解为：SST中原有的服务类型。
示例性地，如表1所示，在SST中新增IMS类型。
表1 SST指示的服务类型及特性
可选地，本申请实施例中，不同的IMS服务通过不同的SD进行区分，例如多媒体电话(multi-media telephony，MMTel)语音业务(MMTel voice)，多媒体电话视频业务(MMTel video)，移动发起(mobile originate，MO)IMS注册相关信令(MO IMS registration related signalling)等分别对应不同的SD编码，具体的编码方式取决于运营商实现。
步骤202、终端从网络侧设备接收URSP规则。
步骤203、终端通过URSP规则，获取IMS信息。
可选地，本申请实施例中，终端可以从URSP规则中获取IMS信息。
可选地，本申请实施例中，在IMS信息包括IMS切片信息的情况下，URSP规则中的路由选择描述符(route selection descriptor，RSD)中包括IMS切片选择组件，该IMS切片选择组件中包括IMS切片信息，或者，RSD中的网络切片选择组件中包括IMS切片信息。
可以理解，网络侧设备可以在URSP规则的流量描述符(traffic descriptor)中的RSD中增加IMS切 片选择组件，终端可以从IMS切片选择组件中，获取IMS切片信息；或者，网络侧设备可以在RSD中的网络切片选择(network slice selection)组件中增加IMS切片信息，终端可以从网络切片选择组件中，获取IMS切片信息。
可选地，本申请实施例中，上述IMS切片选择组件用于指示IMS会话匹配的IMS切片。具体地，IMS切片选择组件用于指示匹配的IMS服务的流量应通过支持任何包含IMS S-NSSAI的IMS会话进行路由。IMS切片选择组件中包括至少一个IMS S-NSSAI。
也就是说，网络侧设备可以在RSD中增加新的组件，该新的组件中包括IMS切片信息，或者在RSD中原有的组件中增加IMS切片信息。
示例性地，如表2所示，网络侧设备在RSD中增加IMS slice selection组件，该IMS slice selection组件中包括IMS切片信息；或者，网络侧设备在RSD中的network slice selection组件中增加IMS切片信息。
表2 RSD及相关说明
表2 RSD及相关说明

可选地，本申请实施例中，终端可以通过URSP规则，获取IMS信息和5G切片信息。一种实现方式中，在网络侧设备在RSD中的网络切片选择组件中增加IMS切片信息的情况下，终端可以通过网络切片选择组件，获取IMS信息和5G切片信息；另一种实现方式中，在网络侧设备在RSD中增加IMS切片选择组件的情况下，终端可以通过网络切片选择组件获取5G切片信息，并通过IMS切片选择组件获取IMS信息。
可选地，本申请实施例中，在IMS信息包括P-CSCF地址指示信息的情况下，URSP规则中的RSD中包括P-CSCF选择组件，该P-CSCF选择组件中包括P-CSCF地址指示信息。
可以理解，网络侧设备可以在URSP规则的流量描述符中的RSD中增加P-CSCF选择组件，终端可以从P-CSCF选择组件中，获取P-CSCF地址指示信息。
可选地，本申请实施例中，上述P-CSCF选择组件用于指示IMS会话匹配的P-CSCF。并且，P-CSCF选择组件用于指示匹配的IMS服务的流量应通过支持任何包含P-CSCF IP地址的IMS会话进行路由。P-CSCF选择组件包括一个或多个P-CSCF IP地址。
也就是说，网络侧设备可以在RSD中增加新的组件，该新的组件中包括P-CSCF地址指示信息。
示例性地，如表3所示，网络侧设备在RSD中增加P-CSCF selection组件，该P-CSCF selection组件中包括P-CSCF地址指示信息。
表3 RSD及相关说明

可选地，本申请实施例中，在上述步骤203之前，本申请实施例提供的IMS服务获取方法还包括下述的步骤301。
步骤301、终端获取IMS服务指示信息。
其中，上述IMS服务指示信息包括以下至少一项：IMS服务的应用标识，需求指示信息，IMS连接能力指示信息；
上述需求指示信息用于指示IMS服务的类型；
上述IMS连接能力指示信息用于请求具备IMS能力的网络连接；
上述IMS信息为URSP规则中与IMS服务的类型匹配的信息。
可选地，本申请实施例中，终端获取IMS服务指示信息可以包括：终端从上层接收IMS服务指示信息。可选的，“上层”可以是NAS层、RRC层或应用层，本申请实施例不做具体限定。
可选地，本申请实施例中，上述IMS服务的类型可以为实时音频服务、实时视频服务和即时消息等。具体的可以根据实际使用需求确定，本申请实施例不做限制。
可选地，本申请实施例中，上述URSP规则包括与IMS服务指示信息匹配的流量描述符，或者，URSP规则中的应用描述符包括与IMS服务指示信息匹配的信息。
可以理解，上述IMS信息可以为URSP规则中与IMS服务指示信息匹配的流量描述符；或者，上述IMS信息可以为URSP规则中的应用描述符中与IMS服务指示信息匹配的信息。
可选地，本申请实施例中，上述与IMS服务指示信息匹配的信息可以为：与IMS服务的应用标识匹 配的信息和/或与需求指示信息匹配的信息。
示例性地，假设与IMS服务指示信息匹配的信息为：与需求指示信息匹配的信息。如表4所示，URSP规则包括与需求指示信息匹配的流量描述符(traffic descriptor)，即IMS service requirement indication，或者，URSP规则中的应用描述符(application descriptors)中包括与IMS服务指示信息匹配的信息，即IMS service requirement indication。
表4流量描述符及相关说明
可选地，本申请实施例中，上述IMS service requirement indication的表现形式可以IMS服务标识(IMS service ID)或IMS服务类型(IMS service type)，并且还可以为其他任意可能的形式，具体的可以根据实际使用需求确定，本申请实施例不做限制。
本申请实施例中，终端可以基于IMS服务指示信息，从URSP规则中获取与IMS服务指示信息匹配的IMS信息，并基于该IMS信息，建立用于该IMS服务的PDU会话和IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
下面基于不同的IMS服务指示信息，通过三种情况对本申请实施例中终端通过URSP规则获取IMS信息的方法进行具体说明。
可选地，本申请实施例中，第一种情况下，上述IMS服务指示信息包括需求指示信息。上述步骤203 具体可以通过下述的步骤203a来实现。
步骤203a、终端根据需求指示信息，从URSP规则中确定第一URSP规则和第二URSP规则。
其中，上述IMS信息为第二URSP规则中的信息；上述第一URSP规则用于建立PDU会话，上述第二URSP规则用于建立IMS信令连接。
可选地，本申请实施例中，第一种实现方式中，终端可以根据需求指示信息，从URSP规则中确定第一URSP规则和第二URSP规则；第二种实现方式中，终端可以根据需求指示信息，确定第一URSP规则，并根据需求指示信息和IMS连接能力指示信息，确定第二URSP规则；第三种实现方式中，终端可以根据需求指示信息和IMS连接能力指示信息，确定第一URSP规则，并根据需求指示信息，确定第二URSP规则；第四种实现方式中，终端可以根据需求指示信息和IMS连接能力指示信息，确定第一URSP规则和第二URSP规则。
可选地，本申请实施例中，上述第一URSP规则和第二URSP规则具有相同的数据网名称，从而将PDU会话和IMS信令连接关联。
本申请实施例中，终端可以根据需求指示信息，从URSP规则中确定第一URSP规则和第二URSP规则，以使用第一URSP规则建立PDU会话，并使用第二URSP规则建立IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
可选地，本申请实施例中，第二种情况下，上述IMS服务指示信息包括应用标识和需求指示信息。上述步骤203具体可以通过下述的步骤203b和步骤203c来实现。
步骤203b、终端根据应用标识，从URSP规则中确定第一URSP规则。
步骤203c、终端根据需求指示信息，从URSP规则中确定第二URSP规则。
其中，上述IMS信息为第二URSP规则中的信息；上述第一URSP规则用于建立PDU会话，上述第二URSP规则用于建立IMS信令连接。
示例性地，如表5所示，终端可以根据应用标识，确定应用标识为APP3的URSP规则(即第一URSP规则)，并根据需求指示信息，确定需求指示信息为IMS service3的URSP规则(即第二URSP规则)。
表5 URSP规则及相关说明
可选地，本申请实施例中，上述IMS服务指示信息还可以包括IMS连接能力指示信息。上述步骤203b具体可以通过下述的步骤203b1来实现，且上述步骤203c具体可以通过下述的步骤203c1来实现。
步骤203b1、终端根据应用标识和IMS连接能力指示信息，从URSP规则中确定第一URSP规则。
步骤203c1、终端根据需求指示信息和IMS连接能力指示信息，从URSP规则中确定第二URSP规则。
可选地，本申请实施例中，上述第一URSP规则和第二URSP规则具有相同的数据网名称，从而将PDU会话和IMS信令连接关联。
可选地，本申请实施例中，在确定第一URSP规则之后，终端可以从第一URSP规则中确定第三RSD；并且，在确定第二URSP规则之后，终端可以从第二URSP规则中确定第四RSD。
可选地，本申请实施例中，终端可以根据IMS服务的偏好指示、终端的配置信息等，从第一URSP规则中确定第三RSD，并从第二URSP规则中确定第四RSD。此外，终端还可以根据IMS服务的其他信息，确定第三RSD和第四RSD，具体的可以根据实际使用需求确定，本申请实施例不做限制。
可以理解，上述第三RSD为：第一URSP规则中与当前的IMS服务最匹配的RSD，即第一URSP规则中最优的RSD；上述第四RSD为：第二URSP规则中与当前的IMS服务最匹配的RSD，即第二URSP规则中最优的RSD。
本申请实施例中，终端可以根据应用标识，从URSP规则中确定第一URSP规则，并根据需求指示信息，从URSP规则中确定第二URSP规则，以使用第一URSP规则建立PDU会话，并使用第二URSP规则建立IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
可选地，本申请实施例中，第三种情况下，上述IMS服务指示信息包括应用标识或需求指示信息。上述步骤203具体可以通过下述的步骤203d和步骤203e来实现。
步骤203d、终端根据应用标识或需求指示信息，从URSP规则中确定第三URSP规则。
步骤203e、终端从第三URSP规则中确定第一RSD和第二RSD。
其中，上述IMS信息为第二RSD中的信息；上述第一RSD用于建立PDU会话，上述第二RSD用于建立IMS信令连接。
示例性地，如表6所示，假设IMS服务指示信息包括需求指示信息，则终端可以根据需求指示信息，确定需求指示信息为IMS service3的URSP规则(即第三URSP规则)，并从该URSP规则中确定属于PDU会话的RSD(即第一RSD)和属于IMS信令连接的RSD(即第二RSD)。
表6 URSP规则及相关说明
可选地，本申请实施例中，上述IMS服务指示信息还可以包括IMS连接能力指示信息。即，终端根据应用标识和IMS连接能力指示信息，从URSP规则中确定第三URSP规则；或者，终端根据需求指示信息和IMS连接能力指示信息，从URSP规则中确定第三URSP规则。
可选地，本申请实施例中，终端可以根据IMS服务的偏好指示、终端的配置信息等，从第三URSP规则中确定第一RSD和第二RSD。并且，终端还可以根据IMS服务的其他信息，从第三URSP规则中确定第一RSD和第二RSD，具体的可以根据实际使用需求确定，本申请实施例不做限制。
可以理解，上述第一RSD和第二RSD为：第三URSP规则中与当前的IMS服务最匹配的两个RSD，即最优的两个RSD。
可选地，本申请实施例中，终端可以通过URSP规则，获取IMS信息和5G切片信息。一种实现方式中，在网络侧设备在RSD中的网络切片选择组件中增加IMS切片信息的情况下，终端可以通过网络 切片选择组件，获取IMS信息和5G切片信息；另一种实现方式中，在网络侧设备在RSD中增加IMS切片选择组件的情况下，终端可以通过网络切片选择组件获取5G切片信息，并通过IMS切片选择组件获取IMS信息。
本申请实施例中，终端可以根据应用标识或需求指示信息，从URSP规则中确定第三URSP规则，并从第二URSP规则中确定第一RSD和第二RSD，以使用第一RSD建立PDU会话，并使用第二RSD建立IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
步骤204、终端基于IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。
可选地，本申请实施例中，终端可以根据URSP规则中的5G切片信息，建立用于IMS服务的PDU会话，并根据URSP规则中的IMS信息，建立IMS信令连接。
可选地，本申请实施例中，终端可以在PDU会话建立请求消息中携带IMS信息(包括指示IMS的S-NSSAI)，通过SMF发送给UPF，以使得UPF根据IMS信息中的P-CSCF地址指示信息，接入合适的P-CSCF，从而P-CSCF可以根据IMS信息中的IMS切片信息选择其他IMS网元。
需要说明的是，传统方案中，由于PDU会话建立请求消息只会携带5G系统的S-NSSAI，并不会携带IMS信息，因此SMF通常根据运营商策略，本地配置等信息，为终端选择P-CSCF，以使得UPF接入该P-CSCF。相较于传统方案，本申请实施例中，可以根据IMS信息，为终端选择合适的P-CSCF，且对于不同IMS服务，可以为终端选择不同的P-CSCF，也就是说，针对每个IMS服务，可以为终端选择定制化的P-CSCF，如此，为不同的IMS服务提供定制化的资源配置，满足了不同的IMS服务的服务需求，从而能够向终端提供更加高效优质的IMS服务。
可选地，本申请实施例中，终端可以基于IMS信息，执行注册和会话初始化流程。并且，当不同的IMS业务到来时，UE通过建立的PDU和不同的承载，使用不同的IMS服务。
可选地，本申请实施例中，终端可以先建立PDU会话，然后再建立IMS信令连接，从而使用IMS服务。
本申请实施例提供一种IMS服务获取方法，终端可以从网络侧设备接收URSP规则，并通过该URSP规则获取IMS信息，以基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。通过本方案，终端可以通过URSP规则获取IMS信息，并基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
可选地，本申请实施例中，在上述步骤201之前，本申请实施例提供的IMS服务获取方法还包括下述的步骤401至步骤404。
步骤401、终端向网络侧设备发送IMS切片能力指示信息。
本申请实施例中，上述IMS切片能力指示信息用于指示终端支持基于IMS切片使用IMS服务。
可选地，本申请实施例中，终端可以在5G系统执行注册过程，在注册过程中向网络侧设备发送IMS切片能力指示信息。
可选地，本申请实施例中，上述IMS切片能力指示信息可以在终端初始注册的过程中传输；或者，上述IMS切片能力指示信息可以在移动性注册更新的过程中传输。
步骤402、网络侧设备接收终端发送的IMS切片能力指示信息。
步骤403、网络侧设备向终端发送第一指示消息。
本申请实施例中，上述第一指示消息用于指示允许终端基于IMS切片使用IMS服务。
可选地，本申请实施例中，网络侧设备接收到终端的IMS切片能力指示信息之后，可以基于终端签约，网络策略和本地配置等信息，向终端指示是否允许终端基于IMS切片使用IMS服务。
步骤404、终端接收网络侧设备发送的第一指示消息。
本申请实施例中，终端在注册的过程中，可以向网络侧设备指示终端支持基于IMS切片使用IMS服务，以在网络侧设备指示允许终端基于IMS切片使用IMS服务的情况下，终端才使用IMS服务，从而进一步保证终端使用IMS服务的服务质量。
本申请实施例提供的IMS服务获取方法，执行主体可以为IMS服务获取装置。本申请实施例中以IMS服务获取装置执行IMS服务获取方法为例，说明本申请实施例提供的IMS服务获取装置。
本申请实施例提供一种IMS服务获取装置，应用于终端，如图3所示，该IMS服务获取装置500包括：接收模块501、获取模块502和建立模块503。其中，接收模块501，用于从网络侧设备接收URSP规则。获取模块502，用于通过接收模块501接收的URSP规则，获取IMS信息。建立模块503，用于基于获取模块502获取的IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。
本申请实施例提供的IMS服务获取装置，可以通过URSP规则获取IMS信息，并基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
可选地，本申请实施例中，上述IMS信息包括以下至少之一：IMS切片信息，P-CSCF地址指示信息，IMS的数据网名称；其中，P-CSCF地址指示信息用于P-CSCF地址。
可选地，本申请实施例中，上述IMS信息包括IMS切片信息；
其中，上述URSP规则中的RSD中包括IMS切片选择组件，IMS切片选择组件中包括IMS切片信息，或者，RSD中的网络切片选择组件中包括IMS切片信息。
可选地，本申请实施例中，上述IMS信息包括P-CSCF地址指示信息；
其中，上述URSP规则中的RSD中包括P-CSCF选择组件，P-CSCF选择组件中包括P-CSCF地址指示信息。
可选地，本申请实施例中，上述获取模块502，还用于在通过URSP规则，获取IMS信息之前，获取IMS服务指示信息；
其中，上述IMS服务指示信息包括以下至少一项：IMS服务的应用标识，需求指示信息，IMS连接能力指示信息；
上述需求指示信息用于指示IMS服务的类型；
上述IMS连接能力指示信息用于请求具备IMS能力的网络连接；
上述IMS信息为URSP规则中与IMS服务的类型匹配的信息。
可选地，本申请实施例中，上述URSP规则包括与IMS服务指示信息匹配的流量描述符，或者，上述URSP规则中的应用描述符包括与IMS服务指示信息匹配的信息。
可选地，本申请实施例中，上述IMS服务指示信息包括需求指示信息；上述获取模块502，具体用于根据需求指示信息，从URSP规则中确定第一URSP规则和第二URSP规则；
其中，该IMS信息为第二URSP规则中的信息；该第一URSP规则用于建立PDU会话，该第二URSP规则用于建立IMS信令连接。
可选地，本申请实施例中，上述IMS服务指示信息包括应用标识和需求指示信息；上述获取模块502，具体用于根据应用标识，从URSP规则中确定第一URSP规则；并根据需求指示信息，从URSP规则中确定第二URSP规则；
其中，该IMS信息为第二URSP规则中的信息；该第一URSP规则用于建立PDU会话，该第二URSP规则用于建立IMS信令连接。
可选地，本申请实施例中，上述IMS服务指示信息包括应用标识或需求指示信息；上述获取模块502，具体用于根据应用标识或需求指示信息，从URSP规则中确定第三URSP规则；并从第三URSP规则中确定第一RSD和第二RSD；
其中，该IMS信息为第二RSD中的信息；该第一RSD用于建立PDU会话，该第二RSD用于建立IMS信令连接。
可选地，本申请实施例中，上述IMS切片信息包括S-NSSAI，该S-NSSAI包括SST和SD；
其中，SST指示的服务类型为IMS，SD用于指示IMS服务的类型；或者，SST指示的服务类型为除IMS之外的服务类型，SD用于指示IMS服务的类型。
可选地，本申请实施例中，上述装置500还包括：发送模块。发送模块，用于在获取模块502通过URSP规则，获取IMS信息之前，向网络侧设备发送IMS切片能力指示信息，该IMS切片能力指示信息用于指示终端支持基于IMS切片使用IMS服务。上述接收模块501，还用于接收网络侧设备发送的第一指示消息，该第一指示消息用于指示允许终端基于IMS切片使用IMS服务。
本申请实施例还提供一种IMS服务获取装置，应用于网络侧设备，如图4所示，该IMS服务获取装置600包括：发送模块601。发送模块601，用于向终端发送URSP规则。其中，该URSP规则中包括 IMS信息；该IMS信息用于终端建立用于IMS服务的PDU会话和IMS信令连接。
本申请实施例提供的IMS服务获取装置，可以向终端发送包括IMS信息的URSP规则，以使得终端基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
可选地，本申请实施例中，上述IMS信息包括以下至少之一：IMS切片信息，P-CSCF地址指示信息，IMS的数据网名称；其中，P-CSCF地址指示信息用于指示P-CSCF的地址。
可选地，本申请实施例中，上述IMS信息包括IMS切片信息；
其中，上述URSP规则中的RSD中包括IMS切片选择组件，IMS切片选择组件中包括IMS切片信息，或者，RSD中的网络切片选择组件中包括IMS切片信息。
可选地，本申请实施例中，上述IMS信息包括P-CSCF地址指示信息；
其中，上述URSP规则中的RSD中包括P-CSCF选择组件，P-CSCF选择组件中包括P-CSCF地址指示信息。
可选地，本申请实施例中，上述IMS切片信息包括S-NSSAI，该S-NSSAI包括SST和SD；
其中，SST指示的服务类型为IMS，SD用于指示IMS服务的类型；或者，SST指示的服务类型为除IMS之外的服务类型，SD用于指示IMS服务的类型。
可选地，本申请实施例中，上述装置600还包括：接收模块。接收模块，用于在发送模块601向终端发送URSP规则之前，接收终端发送的IMS切片能力指示信息，该IMS切片能力指示信息用于指示终端支持基于IMS切片使用IMS服务。上述发送模块601，还用于向终端发送第一指示消息，该第一指示消息用于指示允许终端基于IMS切片使用IMS服务。
本申请实施例中的IMS服务获取装置可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
本申请实施例提供的IMS服务获取装置能够实现图2的方法实施例实现的各个过程，并达到相同的技术效果，为避免重复，这里不再赘述。
可选的，如图5所示，本申请实施例还提供一种通信设备700，包括处理器701和存储器702，存储器702上存储有可在所述处理器701上运行的程序或指令，例如，该通信设备700为终端时，该程序或指令被处理器701执行时实现上述IMS服务获取方法实施例终端的各个步骤，且能达到相同的技术效果。该通信设备700为网络侧设备时，该程序或指令被处理器701执行时实现上述IMS服务获取方法实施例网络侧设备的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种终端，包括处理器和通信接口，通信接口用于从网络侧设备接收URSP规则，处理器用于通过URSP规则，获取IMS信息，并基于IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。该终端实施例与上述终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图6为实现本申请实施例的一种终端的硬件结构示意图。
该终端800包括但不限于：射频单元801、网络模块802、音频输出单元803、输入单元804、传感器805、显示单元806、用户输入单元807、接口单元808、存储器809以及处理器810等中的至少部分部件。
本领域技术人员可以理解，终端800还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器810逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗管理等功能。图6中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元804可以包括图形处理单元(Graphics Processing Unit，GPU)8041和麦克风8042，图形处理器8041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元806可包括显示面板8061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板8061。用户输入单元807包括触控面板8071以及其他输入设备8072中的至少一种。触控面板8071，也称为触摸屏。触控面板8071可包括触摸检测装置和触摸控制器 两个部分。其他输入设备8072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元801接收来自网络侧设备的下行数据后，可以传输给处理器810进行处理；另外，射频单元801可以向网络侧设备发送上行数据。通常，射频单元801包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器809可用于存储软件程序或指令以及各种数据。存储器809可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器809可以包括易失性存储器或非易失性存储器，或者，存储器809可以包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM，DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synch link DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器809包括但不限于这些和任意其它适合类型的存储器。
处理器810可包括一个或多个处理单元；可选的，处理器810集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器810中。
其中，射频单元801，用于从网络侧设备接收URSP规则。处理器810，用于通过URSP规则，获取IMS信息；并基于IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。
本申请实施例提供一种终端，终端可以通过URSP规则获取IMS信息，并基于该IMS信息，建立用于IMS服务的PDU会话和IMS信令连接，从而实现使用5G网络切片和IMS网络切片获取IMS服务，进一步保证了IMS服务的服务质量。
可选地，本申请实施例中，处理器810，还用于获取IMS服务指示信息；
其中，上述IMS服务指示信息包括以下至少一项：IMS服务的应用标识，需求指示信息，IMS连接能力指示信息；
上述需求指示信息用于指示IMS服务的类型；
上述IMS连接能力指示信息用于请求具备IMS能力的网络连接；
上述IMS信息为URSP规则中与IMS服务的类型匹配的信息。
可选地，本申请实施例中，上述IMS服务指示信息包括需求指示信息；处理器810，具体用于根据需求指示信息，从URSP规则中确定第一URSP规则和第二URSP规则；
其中，该IMS信息为第二URSP规则中的信息；该第一URSP规则用于建立PDU会话，该第二URSP规则用于建立IMS信令连接。
可选地，本申请实施例中，上述IMS服务指示信息包括应用标识和需求指示信息；处理器810，具体用于根据应用标识，从URSP规则中确定第一URSP规则；并根据需求指示信息，从URSP规则中确定第二URSP规则；
其中，该IMS信息为第二URSP规则中的信息；该第一URSP规则用于建立PDU会话，该第二URSP规则用于建立IMS信令连接。
可选地，本申请实施例中，上述IMS服务指示信息包括应用标识或需求指示信息；处理器810，具体用于根据应用标识或需求指示信息，从URSP规则中确定第三URSP规则；并从第三URSP规则中确定第一RSD和第二RSD；
其中，该IMS信息为第二RSD中的信息；该第一RSD用于建立PDU会话，该第二RSD用于建立IMS信令连接。
可选地，本申请实施例中，射频单元801，还用于向网络侧设备发送IMS切片能力指示信息，该IMS切片能力指示信息用于指示终端支持基于IMS切片使用IMS服务；并接收网络侧设备发送的第一指示消 息，该第一指示消息用于指示允许终端基于IMS切片使用IMS服务。
本申请实施例还提供一种网络侧设备，包括处理器和通信接口，通信接口用于向终端发送URSP规则；其中，该URSP规则中包括IMS信息；该IMS信息用于终端建立用于IMS服务的PDU会话和IMS信令连接。该网络侧设备实施例与上述网络侧设备方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图7所示，该网络侧设备900包括：处理器901、网络接口902和存储器903。其中，网络接口902例如为通用公共无线接口(common public radio interface，CPRI)。
具体地，本发明实施例的网络侧设备900还包括：存储在存储器903上并可在处理器901上运行的指令或程序，处理器901调用存储器903中的指令或程序执行图4所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述IMS服务获取方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述IMS服务获取方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述IMS服务获取方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种通信系统，包括：终端及网络侧设备，所述终端可用于执行如上所述的IMS服务获取方法的步骤，所述网络侧设备可用于执行如上所述的IMS服务获取方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (37)

  1. 一种网际互连协议多媒体子系统IMS服务获取方法，包括：
    终端从网络侧设备接收终端路由选择策略URSP规则；
    所述终端通过所述URSP规则，获取IMS信息；
    所述终端基于所述IMS信息，建立用于IMS服务的协议数据单元PDU会话和IMS信令连接。
  2. 根据权利要求1所述的方法，其中，所述IMS信息包括以下至少之一：IMS切片信息，代理呼叫会话控制功能P-CSCF地址指示信息，IMS的数据网名称；
    其中，所述P-CSCF地址指示信息用于指示P-CSCF的地址。
  3. 根据权利要求2所述的方法，其中，所述IMS信息包括所述IMS切片信息；
    其中，所述URSP规则中的路由选择描述符RSD中包括IMS切片选择组件，所述IMS切片选择组件中包括所述IMS切片信息，或者，所述RSD中的网络切片选择组件中包括所述IMS切片信息。
  4. 根据权利要求2所述的方法，其中，所述IMS信息包括所述P-CSCF地址指示信息；
    其中，所述URSP规则中的RSD中包括P-CSCF选择组件，所述P-CSCF选择组件中包括所述P-CSCF地址指示信息。
  5. 根据权利要求1所述的方法，其中，所述终端通过所述URSP规则，获取IMS信息之前，所述方法还包括：
    所述终端获取IMS服务指示信息；
    其中，所述IMS服务指示信息包括以下至少一项：所述IMS服务的应用标识，需求指示信息，IMS连接能力指示信息；
    所述需求指示信息用于指示所述IMS服务的类型；
    所述IMS连接能力指示信息用于请求具备IMS能力的网络连接；
    所述IMS信息为所述URSP规则中与所述IMS服务的类型匹配的信息。
  6. 根据权利要求5所述的方法，其中，所述URSP规则包括与所述IMS服务指示信息匹配的流量描述符，或者，所述URSP规则中的应用描述符包括与所述IMS服务指示信息匹配的信息。
  7. 根据权利要求5或6所述的方法，其中，所述IMS服务指示信息包括所述需求指示信息；
    所述终端通过所述URSP规则，获取IMS信息，包括：
    所述终端根据所述需求指示信息，从所述URSP规则中确定第一URSP规则和第二URSP规则；
    其中，所述IMS信息为所述第二URSP规则中的信息；所述第一URSP规则用于建立所述PDU会话，所述第二URSP规则用于建立所述IMS信令连接。
  8. 根据权利要求5或6所述的方法，其中，所述IMS服务指示信息包括所述应用标识和所述需求指示信息；
    所述终端通过所述URSP规则，获取IMS信息，包括：
    所述终端根据所述应用标识，从所述URSP规则中确定第一URSP规则；
    所述终端根据所述需求指示信息，从所述URSP规则中确定第二URSP规则；
    其中，所述IMS信息为所述第二URSP规则中的信息；所述第一URSP规则用于建立所述PDU会话，所述第二URSP规则用于建立所述IMS信令连接。
  9. 根据权利要求5或6所述的方法，其中，所述IMS服务指示信息包括所述应用标识或所述需求指示信息；
    所述终端通过所述URSP规则，获取IMS信息，包括：
    所述终端根据所述应用标识或所述需求指示信息，从所述URSP规则中确定第三URSP规则；
    所述终端从所述第三URSP规则中确定第一RSD和第二RSD；
    其中，所述IMS信息为所述第二RSD中的信息；所述第一RSD用于建立所述PDU会话，所述第二RSD用于建立所述IMS信令连接。
  10. 根据权利要求2所述的方法，其中，所述IMS切片信息包括单网络切片辅助信息S-NSSAI，所述S-NSSAI包括切片服务类型SST和切片区分符SD；
    其中，所述SST指示的服务类型为IMS，所述SD用于指示所述IMS服务的类型；或者，所述SST指示的服务类型为除IMS之外的服务类型，所述SD用于指示所述IMS服务的类型。
  11. 根据权利要求1所述的方法，其中，所述终端通过所述URSP规则，获取IMS信息之前，所述方法还包括：
    所述终端向所述网络侧设备发送IMS切片能力指示信息，所述IMS切片能力指示信息用于指示所述终端支持基于IMS切片使用所述IMS服务；
    所述终端接收所述网络侧设备发送的第一指示消息，所述第一指示消息用于指示允许所述终端基于IMS切片使用所述IMS服务。
  12. 一种IMS服务获取方法，包括：
    网络侧设备向终端发送URSP规则；
    其中，所述URSP规则中包括IMS信息；所述IMS信息用于所述终端建立用于IMS服务的PDU会话和IMS信令连接。
  13. 根据权利要求12所述的方法，其中，所述IMS信息包括以下至少之一：IMS切片信息，P-CSCF地址指示信息，IMS的数据网名称；
    其中，所述P-CSCF地址指示信息用于指示P-CSCF的地址。
  14. 根据权利要求13所述的方法，其中，所述IMS信息包括所述IMS切片信息；
    其中，所述URSP规则中的RSD中包括IMS切片选择组件，所述IMS切片选择组件中包括所述IMS切片信息，或者，所述RSD中的网络切片选择组件中包括所述IMS切片信息。
  15. 根据权利要求13所述的方法，其中，所述IMS信息包括所述P-CSCF地址指示信息；
    其中，所述URSP规则中的RSD中包括P-CSCF选择组件，所述P-CSCF选择组件中包括所述P-CSCF地址指示信息。
  16. 根据权利要求13所述的方法，其中，所述IMS切片信息包括S-NSSAI，所述S-NSSAI包括SST和SD；
    其中，所述SST指示的服务类型为IMS，所述SD用于指示所述IMS服务的类型；或者，所述SST指示的服务类型为除IMS之外的服务类型，所述SD用于指示所述IMS服务的类型。
  17. 根据权利要求12所述的方法，其中，所述网络侧设备向终端发送URSP规则之前，所述方法还包括：
    所述网络侧设备接收所述终端发送的IMS切片能力指示信息，所述IMS切片能力指示信息用于指示所述终端支持基于IMS切片使用所述IMS服务；
    所述网络侧设备向所述终端发送第一指示消息，所述第一指示消息用于指示允许所述终端基于IMS切片使用所述IMS服务。
  18. 一种IMS服务获取装置，包括：接收模块、获取模块和建立模块；
    所述接收模块，用于从网络侧设备接收URSP规则；
    所述获取模块，用于通过所述接收模块接收的所述URSP规则，获取IMS信息；
    所述建立模块，用于基于所述获取模块获取的所述IMS信息，建立用于IMS服务的PDU会话和IMS信令连接。
  19. 根据权利要求18所述的装置，其中，所述IMS信息包括以下至少之一：IMS切片信息，P-CSCF地址指示信息，IMS的数据网名称；
    其中，所述P-CSCF地址指示信息用于指示P-CSCF的地址。
  20. 根据权利要求19所述的装置，其中，所述IMS信息包括所述IMS切片信息；
    其中，所述URSP规则中的RSD中包括IMS切片选择组件，所述IMS切片选择组件中包括所述IMS切片信息，或者，所述RSD中的网络切片选择组件中包括所述IMS切片信息。
  21. 根据权利要求19所述的装置，其中，所述IMS信息包括所述P-CSCF地址指示信息；
    其中，所述URSP规则的RSD中包括P-CSCF选择组件，所述P-CSCF选择组件中包括所述P-CSCF地址指示信息。
  22. 根据权利要求18所述的装置，其中，所述获取模块，还用于在通过所述URSP规则，获取所述IMS信息之前，获取IMS服务指示信息；
    其中，所述IMS服务指示信息包括以下至少一项：所述IMS服务的应用标识，需求指示信息，IMS连接能力指示信息；
    所述需求指示信息用于指示所述IMS服务的类型；
    所述IMS连接能力指示信息用于请求具备IMS能力的网络连接；
    所述IMS信息为所述URSP规则中与所述IMS服务的类型匹配的信息。
  23. 根据权利要求22所述的装置，其中，所述URSP规则包括与所述IMS服务指示信息匹配的流量描述符，或者，所述URSP规则中的应用描述符包括与所述IMS服务指示信息匹配的信息。
  24. 根据权利要求22或23所述的装置，其中，所述IMS服务指示信息包括所述需求指示信息；
    所述获取模块，具体用于根据所述需求指示信息，从所述URSP规则中确定第一URSP规则和第二URSP规则；
    其中，所述IMS信息为所述第二URSP规则中的信息；所述第一URSP规则用于建立所述PDU会话，所述第二URSP规则用于建立所述IMS信令连接。
  25. 根据权利要求22或23所述的装置，其中，所述IMS服务指示信息包括所述应用标识和所述需求指示信息；
    所述获取模块，具体用于根据所述应用标识，从所述URSP规则中确定第一URSP规则；并根据所述需求指示信息，从所述URSP规则中确定第二URSP规则；
    其中，所述IMS信息为所述第二URSP规则中的信息；所述第一URSP规则用于建立所述PDU会话，所述第二URSP规则用于建立所述IMS信令连接。
  26. 根据权利要求22或23所述的装置，其中，所述IMS服务指示信息包括所述应用标识或所述需求指示信息；
    所述获取模块，具体用于根据所述应用标识或所述需求指示信息，从所述URSP规则中确定第三URSP规则；并从所述第三URSP规则中确定第一RSD和第二RSD；
    其中，所述IMS信息为所述第二RSD中的信息；所述第一RSD用于建立所述PDU会话，所述第二RSD用于建立所述IMS信令连接。
  27. 根据权利要求19所述的装置，其中，所述IMS切片信息包括S-NSSAI，所述S-NSSAI包括SST和SD；
    其中，所述SST指示的服务类型为IMS，所述SD用于指示所述IMS服务的类型；或者，所述SST指示的服务类型为除IMS之外的服务类型，所述SD用于指示所述IMS服务的类型。
  28. 根据权利要求18所述的装置，其中，所述装置还包括：发送模块；
    所述发送模块，用于在所述获取模块通过所述URSP规则，获取所述IMS信息之前，向所述网络侧设备发送IMS切片能力指示信息，所述IMS切片能力指示信息用于指示终端支持基于IMS切片使用所述IMS服务；
    所述接收模块，还用于接收所述网络侧设备发送的第一指示消息，所述第一指示消息用于指示允许所述终端基于IMS切片使用所述IMS服务。
  29. 一种IMS服务获取装置，包括：发送模块；
    所述发送模块，用于向终端发送URSP规则；
    其中，所述URSP规则中包括IMS信息；所述IMS信息用于所述终端建立用于IMS服务的PDU会话和IMS信令连接。
  30. 根据权利要求29所述的装置，其中，所述IMS信息包括以下至少之一：IMS切片信息，P-CSCF地址指示信息，IMS的数据网名称；
    其中，所述P-CSCF地址指示信息用于指示P-CSCF的地址。
  31. 根据权利要求30所述的装置，其中，所述IMS信息包括所述IMS切片信息；
    其中，所述URSP规则中的RSD中包括IMS切片选择组件，所述IMS切片选择组件中包括所述IMS切片信息，或者，所述RSD中的网络切片选择组件中包括所述IMS切片信息。
  32. 根据权利要求30所述的装置，其中，所述IMS信息包括所述P-CSCF地址指示信息；
    其中，所述URSP规则中的RSD中包括P-CSCF选择组件，所述P-CSCF选择组件中包括所述P-CSCF地址指示信息。
  33. 根据权利要求30所述的装置，其中，所述IMS切片信息包括S-NSSAI，所述S-NSSAI包括SST和SD；
    其中，所述SST指示的服务类型为IMS，所述SD用于指示所述IMS服务的类型；或者，所述SST指示的服务类型为除IMS之外的服务类型，所述SD用于指示所述IMS服务的类型。
  34. 根据权利要求29所述的装置，其中，所述装置还包括：接收模块；
    所述接收模块，用于在所述发送模块向所述终端发送所述URSP规则之前，接收所述终端发送的IMS切片能力指示信息，所述IMS切片能力指示信息用于指示所述终端支持基于IMS切片使用所述IMS服务；
    所述发送模块，还用于向所述终端发送第一指示消息，所述第一指示消息用于指示允许所述终端基于IMS切片使用所述IMS服务。
  35. 一种终端，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至11任一项所述的IMS服务获取方法的步骤。
  36. 一种网络侧设备，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求12至17任一项所述的IMS服务获取方法的步骤。
  37. 一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至11任一项所述的IMS服务获取方法，或者实现如权利要求12至17任一项所述的IMS服务获取方法的步骤。
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