CN112543173B

CN112543173B - IMS information transmission method, terminal, device and equipment

Info

Publication number: CN112543173B
Application number: CN201910901676.0A
Authority: CN
Inventors: 谢振华
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2022-03-18
Anticipated expiration: 2039-09-23
Also published as: WO2021057774A1; CN112543173A

Abstract

The embodiment of the invention provides an IMS information transmission method, a terminal, a device and equipment, wherein the method comprises the following steps: sending an NAS request, wherein the NAS request carries IMS information; wherein the first terminal has registered with IMS prior to sending the NAS request. The embodiment of the invention can reduce the time length of IMS information processing.

Description

IMS information transmission method, terminal, device and equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, an apparatus, and a device for transmitting internet protocol Multimedia Subsystem (IMS) information.

Background

Some communication systems support IMS, and in these communication systems, before sending IMS information, a terminal needs to activate or establish a connection with a mobile network to send IMS information on the connection, which results in a long time for processing IMS information.

Disclosure of Invention

The embodiment of the invention provides an IMS information transmission method, terminal, device and equipment, and aims to solve the problem that the time for processing IMS information is long.

In a first aspect, an embodiment of the present invention provides an IMS information transmission method, applied to a first terminal, including:

sending a Non-access stratum (NAS) request, wherein the NAS request carries IMS information;

wherein the first terminal has registered with IMS prior to sending the NAS request.

In a second aspect, an embodiment of the present invention provides an IMS information transmission method, applied to a first network function, including:

receiving a first request message, wherein the first request message carries IMS information;

the relevant operation of the IMS session is performed.

In a third aspect, an embodiment of the present invention provides an IMS information transmission method, applied to a second network function, including:

receiving IMS information from a first network function;

sending second media information to a third network function, wherein the second media information is generated based on the IMS information.

In a fourth aspect, an embodiment of the present invention provides a terminal, where the terminal is a first terminal, and the terminal includes:

a sending module, configured to send a non-access stratum NAS request, where the NAS request carries IMS information;

In a fifth aspect, an embodiment of the present invention provides an IMS information transmission apparatus, including:

a receiving module, configured to receive a first request message, where the first request message carries IMS information;

and the execution module is used for executing related operations of the IMS session.

In a sixth aspect, an embodiment of the present invention provides an IMS information transmission apparatus, including:

a receiving module for receiving IMS information from a first network function;

a first sending module, configured to send second media information to a third network function, where the second media information is generated based on the IMS information.

In a seventh aspect, an embodiment of the present invention provides a terminal, where the terminal is a first terminal, and the terminal includes: the present invention provides an IMS information transmission method according to the first aspect of the embodiments of the present invention, which includes a memory, a processor, and a program stored in the memory and executable on the processor.

In an eighth aspect, an embodiment of the present invention provides a network device, including: the IMS information transmission method according to the second aspect of the embodiments of the present invention includes a memory, a processor, and a program stored in the memory and executable on the processor, where the program implements the steps of the IMS information transmission method according to the second aspect of the embodiments of the present invention when executed by the processor.

In a ninth aspect, an embodiment of the present invention provides a network device, including: the IMS information transmission method according to the third aspect of the embodiment of the present invention includes a memory, a processor, and a program stored in the memory and executable on the processor, where the program implements the steps in the IMS information transmission method according to the third aspect of the embodiment of the present invention when executed by the processor.

In a tenth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program, when executed by a processor, implements the steps in the IMS information transmission method provided in the first aspect of the embodiment of the present invention, or the computer program, when executed by the processor, implements the steps in the IMS information transmission method provided in the second aspect of the embodiment of the present invention, or the computer program, when executed by the processor, implements the steps in the IMS information transmission method provided in the third aspect of the embodiment of the present invention.

In the embodiment of the invention, an NAS request is sent, and the NAS request carries IMS information; wherein the first terminal has registered with IMS prior to sending the NAS request. In this way, the IMS information is carried by the NAS, so that the connection with the mobile network can be inactivated or established before the IMS information is sent, and the time length of IMS information processing is reduced.

Drawings

Fig. 1 is a block diagram of a network system to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart of an IMS information transmission method according to an embodiment of the present invention;

fig. 3 is a flowchart of another IMS information transmission method according to an embodiment of the present invention;

fig. 4 is a flowchart of another IMS information transmission method according to an embodiment of the present invention;

fig. 5 is a schematic diagram of an IMS information transmission method according to an embodiment of the present invention;

fig. 6 is a schematic diagram of another IMS information transmission method according to an embodiment of the present invention;

fig. 7 is a structural diagram of a terminal according to an embodiment of the present invention;

fig. 8 is a block diagram of another terminal provided in an embodiment of the present invention;

FIG. 9 is a block diagram of a network function provided by an embodiment of the present invention;

fig. 10 is a block diagram of another IMS information transmission apparatus according to an embodiment of the present invention;

fig. 11 is a block diagram of another IMS information transmission apparatus according to an embodiment of the present invention;

fig. 12 is a block diagram of another IMS information transmission apparatus according to an embodiment of the present invention;

fig. 13 is a block diagram of another IMS information transmission apparatus according to an embodiment of the present invention;

fig. 14 is a block diagram of another terminal provided in an embodiment of the present invention;

fig. 15 is a block diagram of another network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

Embodiments of the present invention are described below with reference to the accompanying drawings. The IMS information transmission method, the terminal and the network function provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a 5G system, an Evolved Long Term Evolution (LTE) system, a subsequent Evolution communication system, or the like.

Referring to fig. 1, fig. 1 is a structural diagram of a network system applicable to the embodiment of the present invention, and as shown in fig. 1, the network system includes a terminal 11, a first network element 12, and a second network element 13, where the terminal 11 may communicate with the first network element 12, the second network element 12 may communicate with the terminal 11, and may also communicate with the second network element 13, and further, the terminal 11 may also communicate with the second network element 13 through the first network element 11.

The terminal 11 may be a User Equipment (UE) or other terminal-side Equipment, for example: a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), a smart car, a vehicle-mounted Device, or a robot, and other terminal-side devices, it should be noted that a specific type of a terminal is not limited in the embodiment of the present invention.

The first Network element 12 may be a Radio Access Network (RAN) Network element, which may include but is not limited to at least one of the following: radio Access Network equipment, Radio Access Network nodes, Radio Access Network functions, Radio Access Network units, Third Generation Partnership Project (3 GPP) Radio Access Networks, Non-3GPP Radio Access Networks, Centralized Units (CUs), Distributed Units (DUs), base stations, evolved Node bs (enbs), 5G base stations (gnbs), Radio Network controllers (Radio Network controllers, RNCs), base stations (nodebs), Non-3GPP interworking functions (Non-3GPP Inter Working Function, N3IWF), Access control (Access Controller, AC) nodes, Access Point (AP) devices, or Wireless Local Area Network (WLAN) nodes.

The second Network element 13 may be a Core Network (CN) Network element that may include, but is not limited to, at least one of the following: core network equipment, core network nodes, core network functions, Mobility Management Entity (MME), Access Management Function (AMF), IMS Control Function (IMS Control Function, IMSCF), Session Management Function (Session Management Function, SMF), User Plane Function (User Plane Function, UPF), serving gateway (serving GW, SGW), PDN gateway (PDN gateway), Policy Control Function (Policy Control Function, PCF), Proxy IMS Session Control Function (P-CSC), Policy and Charging Rules Function (Policy and Charging Rules Function, PCRF), Home Subscriber Server (Home Subscriber Server, HSS), Application Function (Application Function, AF), and the like.

It should be noted that the specific types of the terminal 11, the first network element 12, and the second network element 13 are not limited in the embodiment of the present invention.

Referring to fig. 2, fig. 2 is a flowchart of an IMS information transmission method according to an embodiment of the present invention, where the method is applied to a first terminal, and as shown in fig. 2, the method includes the following steps:

step S201, sending an NAS request, wherein the NAS request carries IMS information;

The NAS request may be a NAS request sent by the terminal in an idle state or an inactive state, or may be a NAS request sent by the terminal in a connected state.

In the above step, since the NAS request carries the IMS information, it may be supported that the connection with the mobile network is not activated or established before sending the IMS information, so as to reduce the time duration of processing (e.g. transmission) the IMS information. Because, sending the NAS request may be sent without activating or establishing a connection with the mobile network.

Optionally, the NAS request message includes:

a service request or a Protocol Data Unit (PDU) session update request.

The Service Request may be a Service Request (Service Request) message or other messages for activating or establishing a wireless air interface connection.

Therefore, the IMS information can be sent through the service request or the PDU session update request, so that the multiplexing of the IMS information and the service request or the PDU session update request is realized, and the time length for sending the IMS information is reduced.

In the embodiment of the present invention, the IMS information may be information related to IMS session establishment, so as to implement fast IMS session establishment through the IMS information. Of course, the IMS information is not limited to this, and may be any information that can be transmitted in the IMS.

Optionally, the IMS information includes at least one of the following:

IMS messages, media information.

The IMS message may be an IMS call setup request, such as: SIP INVITE message, this is not limiting, for example: the IMS message may be any IMS message that a first terminal may send to a second terminal in the IMS, where the second terminal may be a terminal other than the first terminal.

The media information may represent media description information, such as: the media information may reflect media description information carried in the IMS call setup request, and may be specifically used to assist related information for IMS session setup. For example: the media information may include at least one of:

media type, session bandwidth, bandwidth of media type, address of one end of media connection.

The media type may be one or more media types, and the bandwidth of the media type may be a bandwidth of one or more media types. The address of one end of the media connection may be an address of a certain terminal of the media connection related to the IMS information, such as the address of the first terminal.

The media information can enable a network element (such as a session management function) to reserve resources in advance so as to establish the IMS session quickly.

In this embodiment of the present invention, the first terminal may already be registered in the IMS before sending the NAS request, where the first terminal establishes a connection with a mobile network to initiate an IMS registration procedure to register in the IMS in a connected state. For example: the first terminal sends the NAS request in an idle state, but before the terminal enters the idle state, the first terminal registers to the IMS in a connection state.

Because the first terminal is registered to the IMS before sending the NAS request, the IMS registration process does not need to be initiated before sending the IMS information, so that the time length for sending the IMS information by the terminal is reduced.

Optionally, before sending the NAS request, the method further includes:

receiving an IMS indication from a network, wherein the IMS indication is used for indicating an IMS session establishment mode supported by the network.

The receiving of the IMS indication from the network may be that the terminal receives an IMS indication sent by a CN network element, for example, receives an IMS indication sent by an SMF, so as to indicate an IMS session establishment method supported by the SMF.

It should be noted that, in the embodiment of the present invention, a duration of sending the IMS information may be reduced, that is, the IMS session may be established quickly, so that the IMS session establishment method in the embodiment of the present invention may be referred to as fast IMS session establishment, that is, the IMS indication is used to indicate that the IMS session establishment method supported by the network may be, the IMS indication is used to indicate that the network supports fast IMS session establishment. For example: the SMF may send an IMS indication to the terminal via a signaling message (e.g., a Service Accept message) to indicate that the SMF supports fast IMS session establishment.

Of course, if a network function does not support fast IMS session establishment, the network function does not send an IMS indication to indicate that it does not support fast IMS session establishment.

In the above embodiment, since the first terminal receives the IMS indication, the IMS session establishment method supported by the network can be determined, and the IMS information can be sent in a corresponding manner according to the actual situation, so as to avoid the transmission waste caused by inconsistency between the first terminal and the network side.

For example: the first terminal may determine to carry the IMS information in the NAS request according to the IMS indication. Specifically, if the IMS indicates that the network supports fast IMS session establishment and the first terminal also supports fast IMS session establishment, the NAS request carries the IMS information to implement fast IMS session establishment. If the IMS indicates that the network supports fast IMS session establishment but the first terminal does not support fast IMS session establishment, or the network does not send the IMS indication to the terminal, or the sent IMS indication is used for indicating that the network does not support fast IMS session establishment, the IMS information is not carried in the NAS request, so that resource waste or transmission errors caused by the fact that the NAS request carries the IMS are avoided.

Referring to fig. 3, fig. 3 is a flowchart of another IMS information transmission method according to an embodiment of the present invention, where the method is applied to a first network function, and as shown in fig. 3, the method includes the following steps:

step S301, receiving a first request message, wherein the first request message carries IMS information;

and step S302, relevant operation of the IMS session is executed.

The first network function may be a CN network element, for example: SMF.

The first request message may be a first request message sent by a receiving access management function, or a first request message sent by another network function, such as an IMS control function. The first request message may be a PDU context update request, or other request.

The IMS information carried in the first request message may be IMS information from the first terminal, for example: the IMS information may contain at least one of:

IMS message, first media information.

And the first media information comprises at least one of the following items:

It should be noted that, for IMS information in this embodiment, reference may be made to corresponding descriptions in the embodiment shown in fig. 2, which is not described herein again.

The operation related to the execution of the IMS session may be an operation related to the establishment of the IMS session, for example: an operation of reserving resources for the IMS session is performed. Or may be sending the IMS information, such as an IMS message, to the IMS network.

In this embodiment, through the above steps, after receiving the IMS information, the relevant operation of the IMS session may be executed, and the relevant operation of the IMS session is executed without waiting for a response of the second terminal to the IMS information, so that the processing time of the IMS information is reduced.

Optionally, the performing related operations of the IMS session includes:

and sending an IMS policy creating request to a second network function, wherein the IMS policy creating request carries the IMS information.

The second network function may be a CN network element, for example: an IMSCF.

In this embodiment, since the second network function sends the IMS policy creation request, and the IMS policy creation request carries the IMS information, the second network function may respond to the IMS policy creation request according to the IMS information, for example, send a policy authorization creation request to the third network function, or create an IMS policy. It should be noted that, in the embodiment of the present invention, a manner in which the second network function responds to the IMS policy creation request is not limited, and a response manner defined in the protocol or defined in a subsequent protocol version may be adopted.

Further, after sending the IMS policy creation request, the first network function may also receive an IMS policy creation response sent by the second network function to indicate that the second network function has successfully responded to the IMS policy creation request. The IMS policy creation response may include the IMS message described above.

In this embodiment, the IMS policy creation request can be used to establish an IMS session quickly.

Optionally, the performing related operations of the IMS session includes:

sending a policy authorization creation request to a third network function, where the policy authorization creation request carries second media information, where the second media information is generated based on the IMS information, and the second media information includes at least one of the following:

bandwidth, address of one end of the media connection.

The second media information may be a media parameter for creating a mobile network connection that meets the IMS session requirement.

Wherein, the third network function may be a CN network element, for example: a policy control function.

In addition, after sending the policy authorization creation request to the third network function, the third network function may respond to the policy authorization creation request. It should be noted that, in the embodiment of the present invention, a manner in which the third network function responds to the policy authorization creation request is not limited, and a response manner defined in the protocol or defined in a subsequent protocol version may be adopted.

Further, the first network function may further receive a policy authorization creation response sent by the third network function, where the response indicates that the third network function has successfully responded to the policy authorization creation.

Optionally, the IMS information includes an IMS message, and the performing of the relevant operation of the IMS session includes:

sending the IMS message to a fourth network function.

Wherein, the fourth network function may be a CN network element, for example: the IMS session control function is proxied.

In this embodiment, the IMS message is sent to the fourth network function, so that the fourth network function may forward the IMS message to the second terminal. Certainly, the proxy IMS session control function may temporarily not forward the IMS message, but determines whether to forward the IMS message to the second terminal according to the event after receiving the user plane management event notification, where the user plane management event notification may be used to notify that the IMS media user plane resource is completely reserved.

Optionally, after sending the IMS message to the fourth network function, the method further includes:

and the IMS media user interface resource of the terminal is reserved and completed, and a resource reservation completion notification message is sent to the fourth network function.

The resource reservation completion notification message can timely notify the completion of the resource reservation of the IMS media user plane, so that the fourth network function can forward the IMS message to the second terminal in time to quickly establish the IMS session.

Optionally, before receiving the first request message, the method further includes:

and sending an IMS indication to the terminal, wherein the IMS indication is used for indicating an IMS session establishment mode supported by the first network function.

The IMS indication may refer to the IMS indication in the embodiment shown in fig. 2, which is not described herein again and may achieve the same beneficial effects.

In this embodiment, after receiving the IMS information, the relevant operation of the IMS session may be performed without waiting for a response of the second terminal to the IMS information, so that the processing time of the IMS information is reduced.

Referring to fig. 4, fig. 4 is a flowchart of another IMS information transmission method according to an embodiment of the present invention, where the method is applied to a second network function, and as shown in fig. 4, the method includes the following steps:

step S401, receiving IMS information from a first network function;

step S402, sending second media information to a third network function, wherein the second media information is generated based on the IMS information.

Wherein, the second network function may be a CN network element, such as an IMSCF. The third network function may be a CN network element, for example: a policy control function.

The IMS information may refer to the IMS information shown in fig. 2 and fig. 3, which is not described herein, for example: the IMS information may contain at least one of: IMS message, first media information.

The second media information may refer to the second media information in the embodiment shown in fig. 3, and is not described herein again.

In this embodiment, through the above steps, when the response of the second terminal to the IMS information is not received, the second media information may be sent, so that the third network function can quickly respond to the second media information, thereby reducing the time duration for processing the IMS information.

Optionally, the sending the second media information to the third network function includes:

sending a policy authorization creation request to the third network function, where the policy authorization creation request carries the second media information;

the IMS information includes the IMS message, and the method further includes:

and receiving a policy authorization creation response sent by the third network function, and sending the IMS message to the first network function.

The policy authorization creation request and the policy authorization creation response may refer to corresponding descriptions in the embodiment shown in fig. 3, which are not described herein again.

In this embodiment, since the IMS message is sent to the first network function, the IMS message can accurately tell that the processing of the IMS information is completed, so that the first network function can perform other processing quickly, thereby further reducing the time duration for processing the IMS information.

In this embodiment, when the response of the second terminal to the IMS information is not received, the second media information may be sent, so that the third network function can quickly respond to the second media information, thereby reducing the time duration for processing the IMS information.

In the following, the first terminal is taken as UE, and the IMS message is sent in idle state, and the IMS message is an IMS call setup request for example:

in one embodiment, as shown in FIG. 5, the following steps may be included:

step 200: the UE is in an idle state, the UE may initiate an IMS call after registering to the IMS, the UE may enter a connection state to establish a connection with the mobile network to initiate an IMS registration process, and before the UE enters the idle state, an SMF (i.e., an SMF in this embodiment) serving an IMS Service of the UE may send an IMS indication to the UE through a signaling message (e.g., a Service Accept message) to indicate that the SMF supports fast IMS session establishment.

Step 201: the UE sends a Service Request, for example, sends a Service Request message to an Access Management Function (AMF) of the mobile network through a base station of the mobile network to activate a wireless air interface connection, where the message carries an IMS call setup Request, for example, SIP INVITE message, and the Service Request message may also carry media information, where the media information reflects media description information carried in the IMS call setup Request in step 201, and includes a media type, a session bandwidth, a bandwidth for a certain media type, and a media connection address. The UE may determine whether the IMS indication is received to determine whether the service request carries IMS related information.

Step 202: the AMF sends a PDU context update Request to a Session Management Function (SMF), for example, sends an Nsmf _ PDU session _ update smcontext Request, and carries the PDU session update Request in step 201, or carries an IMS call setup Request and media information received from the UE.

Step 203: the SMF sends an IMS policy creation Request, such as a Nims _ policy create Request, to an IMS control function (IMSCF), where the step 202 includes media information, and the message carries the media information, and the step 202 includes an IMS call establishment Request, and the message carries the IMS call establishment Request, and may also carry an IP address of the UE (obtained from a user context stored in the SMF).

Another embodiment is where the SMF and IMSCF are combined, where step 203 is absent.

Step 204: the method includes that an IMSCF sends a Policy Authorization creation Request, such as a Policy Authorization creation Request, to a Policy Control Function (PCF), the Request carries media parameters, the media parameters are generated by using media information as parameters, the media parameters are used for creating a mobile network connection meeting IMS session requirements, including media types, and also including connection address information (i.e., connection address information of UE, including IP address and port number), bandwidth, and the like, of a session connection end, and the PCF sends a Policy Authorization creation Response, such as a Policy Authorization creation Response, to the IMSCF.

In another embodiment, the SMF and IMSCF are combined, in which case the IMSCF is the SMF.

Step 205: the PCF sends a session management Policy update Request, such as an SM Policy Association Modification Request, carrying Quality of Service (QoS) parameters of the IMS session, such as QoS priority information, bandwidth, etc., to the SMF, and the SMF sends a session management Policy update Response, such as an SM Policy Association Modification Response, to the PCF.

Step 206: after step 204, the IMSCF sends an IMS policy creation Response, such as a Nims _ policy create Response, to the SMF, and if step 203 includes an IMS call establishment request, the IMS policy creation Response carries the IMS call establishment request.

Another embodiment is where the SMF and IMSCF are combined, where step 206 is not present.

Step 207: if step 202 or step 206 includes an IMS call setup request, the SMF sends an IMS call setup request to the P-CSCF, the IMS call setup request may be forwarded via the UPF, and the P-CSCF may temporarily not forward the IMS call setup request, but determines whether to forward the IMS call setup request to the target user according to the event after receiving the user plane management event notification in step 217.

Another embodiment is that the P-CSCF and the IMSCF are combined, step 207 is not present, and if step 202 comprises an IMS call setup request, step 203 carries the IMS call setup request, and step 206 is optional.

Step 208: the SMF sends an N4 interface Session update Request to a User Plane Function (UPF), such as sending an N4 Session Modification Request, may carry a rule based on connection address information at a Session connection end (i.e., connection address information of the UE, including an IP address and a port number), and is used for the UPF to process a downlink data packet according to the rule and receive an N4 interface Session update Response, such as an N4 Session Modification Response, sent by the UPF and carrying UPF receive address information.

Step 209: the SMF sends a PDU context update Response to the AMF, such as sending an Nsmf _ pdusesion _ update smcontext Response, carrying the UPF receiving address information, carrying a PDU Session update Command, such as a PDU Session Modification Command message, carrying a QoS parameter for establishing an air interface connection, and carrying an IMS indication for indicating that the SMF supports fast IMS Session establishment.

Step 210: the AMF sends an air interface update Request to the base station, for example, sends an N2 Request, which carries parameters for establishing an air interface connection, including QoS parameters for establishing an air interface connection from the SMF and UPF receiving address information, and also carries a PDU session update command.

Step 211: the base station sends an air interface configuration Request, such as an RRC Connection Reconfiguration Request, to the UE, where the air interface configuration Request carries a PDU session update command.

Step 212: the UE sends an air interface configuration Response, such as an RRC Connection Reconfiguration Response, to the base station.

Step 213: the base station sends an air interface update Response to the AMF, for example, sends N2 Response, which carries the receiving address information of the base station.

Step 214: the AMF sends a PDU context update Request to the SMF, such as an Nsmf _ PDUSESS _ UpdateSMContext Request, which carries the receiving address information of the base station.

Step 215: the SMF sends an N4 interface Session update Request, such as an N4 Session Modification Request, to a User Plane Function (UPF), carrying the received address information of the base station, and receives an N4 interface Session update Response, such as an N4 Session Modification Response, sent by the UPF.

Step 216: the SMF sends a PDU context update Response to the AMF, such as an Nsmf _ PDUSESSion _ UpdateSMContext Response.

Step 217: after step 216, the IMS media User plane resource reservation of the UE is completed, optionally, the SMF may send a User plane Management event Notification, such as a User plane Management Notification message, to the P-CSCF, and the P-CSCF may determine whether the IMS media User plane resource reservation of the UE is successful according to the message, and determine whether to forward the received IMS call establishment request to the target User according to the message.

Step 218: the P-CSCF sends the received IMS call establishment response or IMS ringing message to the UE, the message is transparently forwarded through the UPF and the base station, if the message is an IMS ringing message, after step 211 (the IMS ringing message may arrive at the UE earlier than step 211), the UE can play a reminding sound to prompt the user that the IMS call connection establishment is completed, and the target user rings.

The IMS ringing message may be sent to the UE earlier than step 211, where the UE may forward the IMS call request after the P-CSCF receives the IMS call request.

Step 219: if the P-CSCF receives the media description information from the terminal of the target user, the P-CSCF sends a Policy Authorization creation Request to the Policy control function PCF, such as sending a Policy Authorization creation Request, which carries the media parameters of the IMS session, and is used for creating a mobile network connection meeting the requirements of the IMS session, including the media type, address information of two ends of the session connection, and the like, and the PCF sends a Policy Authorization creation Response to the P-CSCF, such as sending a Policy Authorization creation Response.

Step 220: the PCF finds that the Policy information is updated, for example, the connection address information of the opposite end is added, or the media type is reduced, etc., the PCF sends a session management Policy update Request, for example, the SM Policy Association Modification Request is sent, which carries updated IMS session Policy parameters, for example, the connection address information of the opposite end, the remaining QoS priority information after the media type is reduced, the bandwidth, etc., to the SMF, and the SMF sends a session management Policy update Response, for example, the SM Policy Association Modification Response is sent to the PCF.

Step 221: the SMF sends a message forwarding Request to the AMF, for example, sends a Namf _ Communication _ N1N2MessageTransfer Request, carries a PDU Session update Command, for example, a PDU Session Modification Command, the PDU Session update Command carries opposite end connection address information, and the message forwarding Request also carries updated air interface connection QoS parameters.

Step 222: the AMF sends an air interface update Request to the base station, such as sending an N2 Request, carrying the updated QoS parameters of the air interface connection from the SMF, and also carrying a PDU session update command.

Step 223: the base station sends an air interface configuration Request, such as an RRC Connection Reconfiguration Request, to the UE, where the air interface configuration Request carries a PDU session update command.

Step 224: the UE sends an air interface configuration Response, such as an RRC Connection Reconfiguration Response, to the base station.

Step 225: the base station sends an air interface update Response to the AMF, such as N2 Response.

Step 226: the AMF sends a PDU context update Request to the SMF, such as an Nsmf _ PDUSESS _ UpdateSMContext Request.

Step 227: the SMF sends a PDU context update Response to the AMF, such as an Nsmf _ PDUSESSion _ UpdateSMContext Response.

The following steps 228-230 exist only if a response is established for the IMS call in step 218.

Step 228: after step 218 and step 211, the UE sends an IMS session resource reservation complete message, such as a SIP PRACK message, to the target user through the P-CSCF, which forwards the message to the target user through the base station and the UPF transparently.

Step 229: the UE receives an IMS session resource reservation confirm message, such as a SIP 200OK message, for the target user.

Step 230: the UE receives an IMS Ringing message of the target user, such as an SIP 180Ringing message, and plays a reminding sound to prompt the user that the IMS call connection is established and the target user rings.

Step 231: the target user answers the IMS call, the UE receives an IMS session answering message from the target user, such as SIP 200OK, and the IMS session is connected.

If step 218 is an IMS ringing message and does not carry media description information, the media description information of the terminal of the target user is received only in step 231, that is, steps 219 to 227 occur after step 231.

In another embodiment, which mainly describes a procedure of the terminal accepting IMS call setup through the mobile network, as shown in fig. 6, the method includes the following steps:

step 301: the UE has completed a Registration procedure in the IMS network, such as initiating a SIP Registration message to the IMS network, the message being forwarded via a P-CSCF of the IMS network, and receiving a SIP 200OK message from the IMS network, forwarded via the P-CSCF. The UE is in a connected state, and an SMF (i.e., an SMF in this embodiment) in the mobile network serving the IMS Service of the UE may send an IMS indication to the UE through a signaling message (e.g., a Service Accept message) to indicate that the SMF supports fast IMS session establishment.

Step 302: the P-CSCF receives an IMS session establishment request, such as SIP INVITE message, from the calling user, where the IMS session establishment request also carries media description information (including information such as media type and media connection address) of the terminal of the calling user, and forwards the request to the terminal UE of the target user, where the request is transparently forwarded through the UPF and the base station.

Step 303: the UE generates media description information of the UE that needs to respond according to the received media description information, and the UE sends a PDU Session update Request, such as sending a PDU Session Modification Request message, which can carry media information, to an AMF of the mobile network through a base station of the mobile network, where the media information is generated according to the received media description information and the media description information of the UE, and the media information includes a media type, a Session bandwidth, a bandwidth for a certain media type, connection addresses at both ends of the media, and the like, and the message can also carry an IMS call setup response message including the media description information of the UE, such as an SIP Progress message, and the SIP183Progress message carries an Answer (including the media description information of the UE) of a Session Description Protocol (SDP). The UE may determine whether to initiate a PDU session update request according to whether the IMS indication is received, or whether the PDU session update request carries a SIP183Progress message.

Step 304: the AMF sends a PDU context update Request to a Session Management Function (SMF), for example, sends an Nsmf _ PDU _ update smcontext Request, which carries the PDU session update Request in step 303.

Step 305: the SMF sends an IMS policy creation Request, such as a Nims _ PolicyCreate Request, to an IMS control function (IMSCF), where the message carries media information in step 303, and the message may carry an IMS call setup response message in step 303, and the message may also carry an IP address of the UE (obtained from a user context stored in the SMF).

Another embodiment is where the SMF and IMSCF are combined, without step 305.

Step 306: the method includes that an IMSCF sends a Policy Authorization creation Request, such as a Policy Authorization creation Request, to a Policy Control Function (PCF), the Request carries media parameters, the media parameters are generated by using media information as parameters, the media parameters are used for creating a mobile network connection meeting IMS session requirements, including media types, and also including connection address information (i.e., connection address information of UE, including IP address and port number), bandwidth, and the like, of a session connection end, and the PCF sends a Policy Authorization creation Response, such as a Policy Authorization creation Response, to the IMSCF.

Step 307: the PCF sends a session management Policy update Request, such as an SM Policy Association Modification Request, carrying QoS parameters of the IMS session, such as QoS priority information, bandwidth, etc., to the SMF, and the SMF sends a session management Policy update Response, such as an SM Policy Association Modification Response, to the PCF.

Step 308: after step 306, the IMSCF sends an IMS policy creation Response, such as a Nims _ PolicyCreate Response, to the SMF, and if step 305 includes an IMS session establishment Response message, the IMS policy creation Response includes an IMS session establishment Response message.

Another embodiment is where the SMF and IMSCF are combined, where step 308 is not present.

Step 309: if step 305 or step 308 includes an IMS call setup response message, the SMF sends the IMS call setup response message to the P-CSCF, the IMS call setup response message may be forwarded via the UPF, and the P-CSCF may not forward the IMS call setup response for the moment, but determines whether to forward the IMS call setup response to the calling party according to the event after receiving the user plane management event notification in step 219.

Another embodiment is that the P-CSCF and the IMSCF are combined, at which point there is no step 309, and if step 304 includes an IMS call setup response message, step 305 carries the IMS call setup response message, and step 308 is optional.

Step 310: the SMF sends an N4 interface Session update Request to a User Plane Function (UPF), such as sending an N4 Session Modification Request, may carry a rule based on connection address information at a Session connection end (i.e., connection address information of the UE, including an IP address and a port number), and is used for the UPF to process a downlink data packet according to the rule and receive an N4 interface Session update Response, such as an N4 Session Modification Response, sent by the UPF and carrying UPF receive address information.

Step 311: the SMF sends a PDU context update Response to the AMF, such as sending an Nsmf _ pdusesion _ update smcontext Response, carrying the UPF receiving address information, carrying a PDU Session update Command, such as a PDU Session Modification Command message, carrying a QoS parameter for establishing an air interface connection, and carrying an IMS indication for indicating that the SMF supports fast IMS Session establishment.

Step 312: the AMF sends an air interface update Request to the base station, for example, sends an N2 Request, which carries parameters for establishing an air interface connection, including QoS parameters for establishing an air interface connection from the SMF and UPF receiving address information, and also carries a PDU session update command.

Step 313: the base station sends an air interface configuration Request, such as an RRC Connection Reconfiguration Request, to the UE, where the air interface configuration Request carries a PDU session update command.

Step 314: the UE sends an air interface configuration Response, such as an RRC Connection Reconfiguration Response, to the base station.

Step 315: the base station sends an air interface update Response to the AMF, such as N2 Response.

Step 316: the AMF sends a PDU context update Request to the SMF, such as an Nsmf _ PDUSESS _ UpdateSMContext Request.

Step 317: the SMF sends an N4 interface Session update Request, such as an N4 Session Modification Request, to the user plane function UPF, carrying the received address information of the base station, and receives an N4 interface Session update Response, such as an N4 Session Modification Response, sent by the UPF.

Step 318: the SMF sends a PDU session update Response to the AMF, such as an Nsmf _ PDUSESSion _ UpdateSMContext Response.

Step 320: after step 302, if the UE does not include the IMS call setup response message in step 303, the UE sends the IMS call setup response message to the calling user, the message is transparently forwarded to the P-CSCF via the base station of the mobile network and the UPF of the mobile network, and the P-CSCF forwards the message to the calling user.

Step 321: the UE may receive an IMS session resource reservation complete message, such as a SIP PRACK message, forwarded by the calling user through the P-CSCF, and the message is transparently forwarded through the base station and the UPF.

Step 322: the UE sends an IMS session resource reservation confirm message, such as a SIP 200OK message, to the calling user.

Step 323: the UE sends an IMS Ringing message, such as a SIP 180Ringing message, to the calling user, and the UE plays the Ringing tone.

Step 324: the user answers the IMS call, and the UE sends an IMS session answer message, such as SIP 200OK, to the calling user, and the IMS session is connected.

The terminal in the embodiment of the invention can be realized as follows:

and sending IMS related information to the mobile network by taking non-access stratum (NAS) signaling as a bearer, wherein the IMS related information comprises IMS signaling information or media description information, and the media description information is generated according to the content in the IMS signaling information.

Further, an IMS indication is received from the mobile network indicating that the mobile network supports fast IMS session establishment.

Further, before sending the IMS related information to the mobile network, it is determined that the IMS indication from the mobile network is received, and it is determined to send the IMS related information.

The first network function (e.g., SMF) in the embodiments of the present invention may be implemented as follows:

receiving IMS related information from a terminal, wherein the IMS related information comprises IMS signaling information or media description information;

sending the IMS signaling message to an IMS network, or sending the IMS related information or the media description information to a second network function (IMSCF), or sending media parameters generated based on the IMS related information to a third network function (PCF) of the mobile network.

Further, an IMS indication is sent to the terminal, for indicating that the mobile network of the terminal supports fast IMS session establishment.

Further, before sending the IMS signaling message to the IMS network, the IMS related information is sent to the second network function, and the IMS signaling message sent by the second network function is received.

The second network function (for example: IMSCF) in the embodiments of the present invention may be implemented as follows:

receiving IMS related information from a first network function in a mobile network, wherein the IMS related information comprises IMS signaling information or media description information;

sending media parameters (generated based on IMS signaling messages, or generated based on media description information) generated based on the IMS-related information to a third network function (PCF) in the mobile network.

Further, the IMS related information includes the IMS signaling message, and the IMS signaling message is sent to the first network function.

Referring to fig. 7, fig. 7 is a structural diagram of a terminal according to an embodiment of the present invention, where the terminal is a first terminal, and as shown in fig. 7, a terminal 700 includes:

a sending module 701, configured to send an NAS request, where the NAS request carries IMS information;

Optionally, the NAS request message includes:

a service request or a PDU session update request.

Optionally, the IMS information includes at least one of the following:

IMS messages, media information.

Optionally, the media information includes at least one of:

Optionally, as shown in fig. 8, the terminal 700 further includes:

a receiving module 702, configured to receive an IMS indication from a network, where the IMS indication is used to indicate an IMS session establishment manner supported by the network.

Optionally, the first terminal determines, according to the IMS indication, that the NAS request carries the IMS information.

The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the method embodiment of fig. 2, and for avoiding repetition, details are not described here, and the processing delay of the IMS information can be reduced.

Referring to fig. 9, fig. 9 is a structural diagram of an IMS information transmission apparatus according to an embodiment of the present invention, where the IMS information transmission apparatus corresponds to a first network function, and as shown in fig. 9, the IMS information transmission apparatus 900 includes:

a receiving module 901, configured to receive a first request message, where the first request message carries IMS information;

an executing module 902 is configured to execute relevant operations of the IMS session.

Optionally, the IMS information includes at least one of the following:

IMS message, first media information.

Optionally, the first media information includes at least one of:

Optionally, the performing related operations of the IMS session includes:

bandwidth, address of one end of the media connection.

sending the IMS message to a fourth network function.

Optionally, as shown in fig. 10, the IMS information transmitting apparatus 900 further includes:

a notification module 903, configured to send a resource reservation complete notification message to the fourth network function when the IMS media user plane resource reservation of the terminal is completed.

Optionally, as shown in fig. 11, the IMS information transmitting apparatus 900 further includes:

a sending module 904, configured to send an IMS indication to the terminal, where the IMS indication is used to indicate an IMS session establishment manner supported by the first network function.

The network function provided in the embodiment of the present invention can implement each process of implementing the first network function in the method embodiment of fig. 3, which is not described herein again to avoid repetition, and can reduce the processing delay of the IMS information.

Referring to fig. 12, fig. 12 is a structural diagram of an IMS information transmission apparatus according to an embodiment of the present invention, where the IMS information transmission apparatus corresponds to a second network function, and as shown in fig. 12, the IMS information transmission apparatus 1200 includes:

a receiving module 1201, configured to receive IMS information from a first network function;

a first sending module 1202, configured to send second media information to a third network function, where the second media information is generated based on the IMS information.

Optionally, the IMS information includes at least one of the following: IMS message, first media information.

the IMS information includes the IMS message, and as shown in fig. 13, the IMS information transmission apparatus 1200 further includes:

a second sending module 1203, configured to receive a policy authorization creation response sent by the third network function, and send the IMS message to the first network function.

The network function provided in the embodiment of the present invention can implement each process implemented by the second network function in the method embodiment of fig. 4, and is not described here again to avoid repetition, and the processing delay of the IMS information can be reduced.

Figure 14 is a schematic diagram of the hardware architecture of a terminal implementing various embodiments of the invention,

the terminal 1400 includes but is not limited to: radio frequency unit 1401, network module 1402, audio output unit 1403, input unit 1404, sensor 1405, display unit 1406, user input unit 1407, interface unit 1408, memory 1409, processor 1410, and power supply 1411. Those skilled in the art will appreciate that the terminal configuration shown in fig. 14 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a robot, a wearable device, a pedometer, and the like.

A radio frequency unit 1401, configured to send an NAS request, where the NAS request carries IMS information;

Optionally, the NAS request message includes:

a service request or a protocol data unit, PDU, session update request.

Optionally, the IMS information includes at least one of the following:

IMS messages, media information.

Optionally, the media information includes at least one of:

Optionally, before the sending the NAS request, the radio frequency unit 1401 is further configured to:

The terminal can reduce the processing time of the IMS information.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 1401 may be configured to receive and transmit signals during a message transmission or call process, and specifically, receive downlink data from a base station and then process the received downlink data to the processor 1410; in addition, the uplink data is transmitted to the base station. In general, radio unit 1401 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. The radio unit 1401 may also communicate with a network and other devices via a wireless communication system.

The terminal provides the user with wireless broadband internet access through the network module 1402, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 1403 can convert audio data received by the radio frequency unit 1401 or the network module 1402 or stored in the memory 1409 into an audio signal and output as sound. Also, the audio output unit 1403 may also provide audio output related to a specific function performed by the terminal 1400 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 1403 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1404 is for receiving an audio or video signal. The input Unit 1404 may include a Graphics Processing Unit (GPU) 14041 and a microphone 14042, the Graphics processor 14041 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 processed image frames may be displayed on the display unit 1406. The image frames processed by the graphics processor 14041 may be stored in the memory 1409 (or other storage medium) or transmitted via the radio unit 1401 or the network module 1402. The microphone 14042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 1401 in case of a phone call mode.

Terminal 1400 also includes at least one sensor 1405, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 14061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 14061 and/or the backlight when the terminal 1400 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 1405 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 1406 is used to display information input by the user or information provided to the user. The Display unit 1406 may include a Display panel 14061, and the Display panel 14061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 1407 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 1407 includes a touch panel 14071 and other input devices 14072. The touch panel 14071, also referred to as a touch screen, may collect touch operations by a user (e.g., operations by a user on or near the touch panel 14071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 14071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1410, receives a command from the processor 1410, and executes the command. In addition, the touch panel 14071 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 14071, the user input unit 1407 may include other input devices 14072. In particular, the other input devices 14072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.

Further, the touch panel 14071 may be overlaid on the display panel 14061, and when the touch panel 14071 detects a touch operation on or near the touch panel 14071, the touch operation is transmitted to the processor 1410 to determine the type of the touch event, and then the processor 1410 provides a corresponding visual output on the display panel 14061 according to the type of the touch event. Although in fig. 14, the touch panel 14071 and the display panel 14061 are two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 14071 and the display panel 14061 may be integrated to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 1408 is an interface to which an external device is connected with the terminal 1400. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. Interface unit 1408 may be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within terminal 1400 or may be used to transmit data between terminal 1400 and external devices.

The memory 1409 may be used to store software programs as well as various data. The memory 1409 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory 1409 can include high speed random access memory and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 1410 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 1409 and calling data stored in the memory 1409, thereby performing overall monitoring of the terminal. Processor 1410 may include one or more processing units; preferably, the processor 1410 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1410.

The terminal 1400 may further include a power source 1411 (e.g., a battery) for supplying power to various components, and preferably, the power source 1411 may be logically connected to the processor 1410 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system.

In addition, terminal 1400 includes some functional modules that are not shown, and are not described herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 1410, a memory 1409, and a computer program stored in the memory 1409 and capable of running on the processor 1410, where the computer program, when executed by the processor 1410, implements each process of the above-mentioned first terminal-side IMS information transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Referring to fig. 15, fig. 15 is a structural diagram of a network device according to an embodiment of the present invention, where the network device corresponds to a network function, and as shown in fig. 15, the network device 1500 includes: a processor 1501, a transceiver 1502, a memory 1503, and a bus interface, wherein:

in an embodiment where network device 1500 corresponds to a first network function:

the transceiver 1502 is configured to receive a first request message, where the first request message carries IMS information;

the transceiver 1502 or the processor 1501 is configured to perform operations related to the IMS session.

Optionally, the IMS information includes at least one of the following:

IMS message, first media information.

Optionally, the first media information includes at least one of:

Optionally, the performing related operations of the IMS session includes:

bandwidth, address of one end of the media connection.

sending the IMS message to a fourth network function.

Optionally, after the IMS message is successfully sent to the fourth network, the transceiver 1502 is further configured to:

Optionally, before receiving the first request message, the transceiver 1502 is further configured to:

In an embodiment where network device 1500 corresponds to a second network function:

the transceiver 1502 is configured to receive IMS information from a first network function;

the transceiver 1502 is further configured to send second media information to a third network function, wherein the second media information is generated based on the IMS information.

the IMS information includes the IMS message, and the transceiver 1502 is further configured to:

The network function can reduce the processing time of the IMS information.

Wherein the transceiver 1502 is configured to receive and transmit data under the control of the processor 1501, the transceiver 1502 includes at least two antenna ports.

In fig. 15, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1501, and various circuits, represented by memory 1503, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1502 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1504 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1501 is responsible for managing a bus architecture and general processing, and the memory 1503 may store data used by the processor 1501 in performing operations.

Preferably, an embodiment of the present invention further provides a network device, including a processor 1501, a memory 1503, and a computer program stored in the memory 1503 and operable on the processor 1501, where the computer program, when executed by the processor 1501, implements each process of the IMS information transmission method embodiment at the first network function or the second network function side, and can achieve the same technical effect, and in order to avoid repetition, the details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for transmitting IMS information at a first terminal side according to the embodiment of the present invention is implemented, or when the computer program is executed by a processor, the method for transmitting IMS information at a first network function side according to the embodiment of the present invention is implemented, or when the computer program is executed by a processor, the method for transmitting IMS information at a second network function side according to the embodiment of the present invention is implemented, and the same technical effects can be achieved, and are not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An internet protocol multimedia subsystem (IMS) information transmission method is applied to a first terminal and is characterized by comprising the following steps:

2. The method of claim 1, wherein the NAS request message comprises:

a service request or a protocol data unit, PDU, session update request.

3. The method of claim 1, wherein the IMS information comprises at least one of:

IMS messages, media information.

4. The method of claim 3, wherein the media information comprises at least one of:

5. The method of claim 1, wherein prior to the sending the NAS request, the method further comprises:

6. The method of claim 5, wherein the first terminal determines to carry the IMS information in the NAS request according to the IMS indication.

7. An IMS information transmission method is applied to a first network function, and is characterized by comprising the following steps:

receiving a first request message, wherein the first request message carries IMS information, and the IMS information is IMS information requested to be sent by a first terminal through a non-access stratum (NAS);

the relevant operation of the IMS session is performed.

8. The method of claim 7, wherein the IMS information comprises at least one of:

IMS message, first media information.

9. The method of claim 8, wherein the first media information comprises at least one of:

10. The method of claim 7, wherein the performing the related operations of the IMS session comprises:

11. The method of claim 7, wherein the performing the related operations of the IMS session comprises:

bandwidth, address of one end of the media connection.

12. The method of claim 7, wherein the IMS information comprises IMS messages, and wherein performing IMS session related operations comprises:

sending the IMS message to a fourth network function.

13. The method of claim 12, wherein after the sending the IMS message to a fourth network function, the method further comprises:

14. The method of claim 7, wherein prior to the receiving the first request message, the method further comprises:

15. An IMS information transmission method is applied to a second network function, and is characterized by comprising the following steps:

receiving IMS information from a first network function, wherein the IMS information is IMS information sent by a first terminal through a non-access stratum (NAS) request;

16. The method of claim 15, wherein the IMS information comprises at least one of: IMS message, first media information.

17. The method of claim 16, wherein said sending second media information to a third network function comprises:

the IMS information includes the IMS message, and the method further includes:

18. A terminal, the terminal being a first terminal, comprising:

19. An IMS information transfer apparatus, comprising:

a receiving module, configured to receive a first request message, where the first request message carries IMS information, and the IMS information is IMS information that is requested to be sent by a first terminal through a non-access stratum NAS;

20. An IMS information transfer apparatus, comprising:

the receiving module is used for receiving IMS information from a first network function, wherein the IMS information is the IMS information sent by a first terminal through a non-access stratum (NAS) request;

21. A terminal, the terminal being a first terminal, comprising: memory, processor and program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the IMS information transfer method according to any of claims 1 to 6.

22. A network device, comprising: a memory, a processor and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps in the IMS information transfer method according to any of claims 7 to 14.

23. A network device, comprising: a memory, a processor and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps in the IMS information transfer method according to any of claims 15 to 17.

24. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, realizes the steps in the IMS information transmission method according to any one of claims 1 to 6, or which computer program, when being executed by a processor, realizes the steps in the IMS information transmission method according to any one of claims 7 to 14, or which computer program, when being executed by a processor, realizes the steps in the IMS information transmission method according to any one of claims 15 to 17.