CN109548006B

CN109548006B - Method and device for establishing data channel and computer readable storage medium

Info

Publication number: CN109548006B
Application number: CN201710670506.7A
Authority: CN
Inventors: 孙滔; 刘超; 王丹
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2017-08-08
Filing date: 2017-08-08
Publication date: 2021-04-13
Anticipated expiration: 2037-08-08
Also published as: CN109548006A; WO2019029297A1

Abstract

The invention provides a method and equipment for establishing a data channel and a computer readable storage medium, relates to the technical field of communication, and aims to improve the flexibility of establishing the data channel for a terminal. The method for establishing the data channel comprises the following steps: when downlink data arrives at a network side, directly calling a terminal reachable service to establish a user plane data channel for the terminal; or when downlink data arrives at the network side, indirectly calling the terminal reachable service to establish a user plane data channel for the terminal. The invention is mainly used in the field of wireless communication.

Description

Method and device for establishing data channel and computer readable storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for establishing a data channel, and a computer-readable storage medium.

Background

When the terminal does not transmit the control signaling and the user data for a period of time, the air interface resource of the terminal is released, and the tunnel (from the base station to the gateway) of the user plane of the terminal is often released. When downlink data or signaling is sent to the terminal, the network triggers the base station to page in a certain Area (such as a Tracking Area (TA) list). After detecting the paging message, the terminal initiates a connection establishment request and enters a connection state.

In order to realize the paging that the terminal can perform, it is one of the functions of the core network control plane device in the traditional network that mainly consumes resources. In addition, paging is not required for all terminals. For a micro (mobile Initiated Communication) terminal or a fixed non-mobile terminal, the initiation of the service is actively triggered by the terminal. The situation that the terminal is in an IDLE state and the network calls the terminal to transmit data through a control plane signaling or a user plane data channel does not exist.

For the above reasons, in the 5G service architecture design, one Network Function (NF) is defined by a plurality of services. For example, the AMF (Access and Management Function) may be composed of: a plurality of services such as a Communication (Communication) service and an information opening service. In the prior art, most terminal paging and data plane channels are completed by communication services. For the above reasons, in order to customize the functions and expand the capacity of the service as needed, a more flexible data channel establishment method needs to be considered.

Disclosure of Invention

In view of the above, the present invention provides a method, an apparatus and a computer readable storage medium for establishing a data channel, so as to improve flexibility of establishing a data channel for a terminal.

In order to solve the above technical problem, the present invention provides a method for establishing a data channel, which is applied to a session management function SMF or a related service thereof, and includes:

when downlink data arrives at a network side, directly calling a terminal reachable service to establish a user plane data channel for the terminal; or

When downlink data arrives at the network side, the terminal reachable service is indirectly called to establish a user plane data channel for the terminal.

The directly calling the terminal reachable service to establish a user plane data channel for the terminal includes:

directly calling a terminal reachable service, wherein when the terminal is determined to be in a connected state, the terminal reachable service calls access and mobility management related functions or services to establish a user plane data channel for the terminal; and the terminal reachable service pages the terminal when determining that the terminal is in an idle state, and calls access and mobility management related functions or services to establish a user plane data channel for the terminal after determining that the terminal is in a connected state.

Wherein the method further comprises:

and receiving the information of the user plane data channel sent by the terminal reachable service.

The indirectly invoking the terminal reachable service to establish a user plane data channel for the terminal includes:

calling access and mobility management related functions or services, wherein the access and mobility management related functions or services call terminal reachable services to determine that the terminal is in a connected state; when the access and mobility management related function or service receives the information that the terminal reachable service determines that the terminal is in a connected state, a user plane data channel is established for the terminal; and when the access and mobility management related functions or services receive the information that the terminal reachable service determines that the terminal is in the idle state, calling the terminal reachable service to page the terminal, and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

calling access and mobility management related functions or services, and establishing a user plane data channel for the terminal when the access and mobility management related functions or services determine that the terminal is in a connected state; and when the access and mobility management related functions or services determine that the terminal is in an idle state, calling a terminal reachable service to page the terminal, and establishing a user plane data channel for the terminal after determining that the terminal is in a connected state.

Wherein the method further comprises:

and receiving the information of the user plane data channel sent by the access and mobility management related function or service.

In a second aspect, an embodiment of the present invention provides a method for establishing a data channel, which is applied to a terminal-reachable service, and includes:

receiving a data channel establishment notice of a Session Management Function (SMF) or related services thereof;

and establishing a user plane data channel for the terminal according to the data channel establishing notice.

Wherein, the establishing a user plane data channel for a terminal according to the data channel establishing notification includes:

acquiring state information of the terminal;

when the terminal is determined to be in a connection state according to the state information, calling access and mobility management related functions or services to establish a user plane data channel for the terminal;

and when the terminal is determined to be in an idle state according to the state information, paging the terminal, and after the terminal is determined to be in a connection state, calling access and mobility management related functions or services to establish a user plane data channel for the terminal.

The invoking of the access and mobility management related functions or services establishes a user plane data channel for the terminal, including:

sending a calling request to the access and mobility management related function or service, wherein the calling request carries a terminal reachable indication, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the terminal reachable indication; or

And sending a calling request to the access and mobility management related function or service, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the calling request.

In a third aspect, an embodiment of the present invention provides a method for establishing a data channel, where the method is applied to a terminal-reachable service, and includes:

acquiring state information of the terminal according to the indication of the access and mobility management related functions or services;

when the terminal is determined to be in a connection state according to the state information, informing that the access and mobility management related functions or services are accessible to the terminal, and establishing a user plane data channel for the terminal by the access and mobility management related functions or services;

and when the terminal is determined to be in an idle state according to the state information, paging the terminal, and when the terminal is connected, informing the access and mobility management related function or service that the terminal can be reached so as to establish a user plane data channel for the terminal by the access and mobility management related function or service.

In a fourth aspect, an embodiment of the present invention provides a method for establishing a data channel, where the method is applied to a terminal-reachable service, and includes:

when the access and mobility management related function or service determines that the terminal is in an idle state, the terminal is paged according to the indication of the access and mobility management related function or service, and when the terminal is connected, the access and mobility management related function or service is informed that the terminal can be reached, so that a user plane data channel is established for the terminal by the access and mobility management related function or service.

In a fifth aspect, an embodiment of the present invention provides a method for establishing a data channel, where the method is applied to access and mobility management related functions or services, and includes:

Wherein, the establishing a user plane data channel for the terminal includes:

acquiring state information of the terminal;

when the terminal is determined to be in a connection state according to the state information, establishing a user plane data channel for the terminal;

and calling a terminal reachable service to page the terminal when the terminal is determined to be in an idle state according to the state information, and establishing a user plane data channel for the terminal after receiving the information that the terminal reachable service determines that the terminal is in a connected state.

Wherein, the establishing a user plane data channel for the terminal includes:

calling a terminal reachable service to determine that the terminal is in a connected state;

and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

Wherein the invoking the terminal reachable service to determine that the terminal is in a connected state comprises:

receiving a response message of the terminal reachable service, determining that the terminal is in a connected state according to the response message, wherein the response message comprises a terminal reachable indication; or

And receiving a response message of the terminal reachable service, acquiring context information of the terminal according to the response message, and determining that the terminal is in a connected state according to the context information.

In a sixth aspect, an embodiment of the present invention provides an apparatus for establishing a data channel, including: a processor and a transceiver;

the processor is used for directly calling the terminal reachable service to establish a user plane data channel for the terminal when downlink data arrives at the network side; or when downlink data arrives at the network side, indirectly calling the terminal reachable service to establish a user plane data channel for the terminal;

the transceiver is used for receiving and transmitting data under the control of the processor.

The processor is further configured to directly invoke a terminal-reachable service, and when the terminal-reachable service determines that the terminal is in a connected state, invoke access and mobility management related functions or services to establish a user plane data channel for the terminal; and the terminal reachable service pages the terminal when determining that the terminal is in an idle state, and calls access and mobility management related functions or services to establish a user plane data channel for the terminal after determining that the terminal is in a connected state.

The transceiver is further configured to receive information of a user plane data channel sent by the terminal reachable service.

The processor is further configured to invoke access and mobility management related functions or services, where the access and mobility management related functions or services invoke terminal reachable services to determine that the terminal is in a connected state; when the access and mobility management related function or service receives the information that the terminal reachable service determines that the terminal is in a connected state, a user plane data channel is established for the terminal; and when the access and mobility management related functions or services receive the information that the terminal reachable service determines that the terminal is in the idle state, calling the terminal reachable service to page the terminal, and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

The processor is further configured to invoke access and mobility management related functions or services, and establish a user plane data channel for the terminal when the access and mobility management related functions or services determine that the terminal is in a connected state; and when the access and mobility management related functions or services determine that the terminal is in an idle state, calling a terminal reachable service to page the terminal, and establishing a user plane data channel for the terminal after determining that the terminal is in a connected state.

The transceiver is further configured to receive information of a user plane data channel sent by the access and mobility management related function or service.

In a seventh aspect, an embodiment of the present invention provides an apparatus for establishing a data channel, where the apparatus includes: a processor and a transceiver;

the transceiver is used for receiving a data channel establishment notice of a Session Management Function (SMF) or related services thereof;

and the processor is used for establishing a user plane data channel for the terminal according to the data channel establishment notice.

The processor is further configured to acquire state information of the terminal; when the terminal is determined to be in a connection state according to the state information, calling access and mobility management related functions or services to establish a user plane data channel for the terminal; and when the terminal is determined to be in an idle state according to the state information, paging the terminal, and after the terminal is determined to be in a connection state, calling access and mobility management related functions or services to establish a user plane data channel for the terminal.

The processor is further configured to send a call request to the access and mobility management related function or service through the transceiver, where the call request carries a terminal reachable indication, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the terminal reachable indication; or

And sending a calling request to the access and mobility management related function or service through the transceiver, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the calling request.

In an eighth aspect, an embodiment of the present invention provides an apparatus for establishing a data channel, including: a processor and a transceiver;

the processor is used for acquiring the state information of the terminal according to the instructions of the access and mobility management related functions or services; when the terminal is determined to be in a connection state according to the state information, informing that the access and mobility management related functions or services are accessible to the terminal, and establishing a user plane data channel for the terminal by the access and mobility management related functions or services; when the terminal is determined to be in an idle state according to the state information, paging the terminal, and when the terminal is connected, informing access and mobility management related functions or services that the terminal is accessible, so that a user plane data channel is established for the terminal by the access and mobility management related functions or services;

In a ninth aspect, an embodiment of the present invention provides an apparatus for establishing a data channel, including: a processor and a transceiver;

the processor is used for paging the terminal according to the indication of the access and mobility management related function or service when the access and mobility management related function or service determines that the terminal is in an idle state, and informing the access and mobility management related function or service that the terminal is accessible when the terminal is connected so as to establish a user plane data channel for the terminal by the access and mobility management related function or service;

In a tenth aspect, an embodiment of the present invention provides an apparatus for establishing a data channel, including: a processor and a transceiver;

the transceiver is used for establishing a notification of a data channel of a Session Management Function (SMF) or related services thereof;

The processor is further configured to acquire state information of the terminal; when the terminal is determined to be in a connection state according to the state information, establishing a user plane data channel for the terminal; and calling a terminal reachable service to page the terminal when the terminal is determined to be in an idle state according to the state information, and establishing a user plane data channel for the terminal after receiving the information that the terminal reachable service determines that the terminal is in a connected state.

The processor is further configured to invoke a terminal reachable service to determine that the terminal is in a connected state; and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

Wherein the processor is further configured to,

receiving a response message of the terminal reachable service through the transceiver, determining that the terminal is in a connected state according to the response message, and including a terminal reachable indication in the response message; or

And receiving a response message of the reachable service of the terminal through the transceiver, acquiring context information of the terminal according to the response message, and determining that the terminal is in a connected state according to the context information.

In an eleventh aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; the processor, when executing the computer program, implements the steps in the method according to the first aspect as described above.

In a twelfth aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; the processor, when executing the computer program, implements the steps in the method according to the second aspect as described above.

In a thirteenth aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; the processor, when executing the computer program, implements the steps in the method according to the aforementioned third aspect.

In a fourteenth aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; the processor, when executing the computer program, implements the steps in the method according to the fourth aspect described above.

In a fifteenth aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; the processor, when executing the computer program, implements the steps in the method according to the fifth aspect described above.

In a sixteenth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing a computer program, which when executed by a processor implements the steps in the method according to any one of the preceding first aspects; or which when executed by a processor implements a step in a method according to any of the preceding second aspects; the computer program, when executed by a processor, implementing the steps in the method according to the aforementioned third aspect; the computer program, when executed by a processor, implementing the steps in the method according to the fourth aspect; which when executed by a processor implements the steps in the method according to the fifth aspect described above.

The technical scheme of the invention has the following beneficial effects:

in the embodiment of the invention, the user plane data channel can be established for the terminal by directly calling or indirectly calling the terminal reachable service. The terminal reachable service is taken as an independent service, so that the flexible configuration of the terminal reachable service can be realized, and the flexibility of establishing a data channel for the terminal is further improved.

Drawings

FIG. 1 is a flow chart of a method for establishing a data channel according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method for establishing a data channel according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for establishing a data channel according to an embodiment of the present invention;

FIG. 4 is a flowchart of a method for establishing a data channel according to an embodiment of the present invention;

FIG. 5 is a flowchart of a method for establishing a data channel according to an embodiment of the present invention;

FIG. 6 is a flow chart of a method for establishing a data channel according to an embodiment of the present invention;

FIG. 7 is a flowchart of a method for establishing a data channel according to an embodiment of the present invention;

FIG. 8 is a flowchart of a method for establishing a data channel according to an embodiment of the present invention;

FIG. 9 is a diagram illustrating an apparatus for establishing a data channel according to an embodiment of the present invention;

FIG. 10 is a diagram illustrating an apparatus for establishing a data channel according to an embodiment of the present invention;

FIG. 11 is a diagram illustrating an apparatus for establishing a data channel according to an embodiment of the present invention;

FIG. 12 is a diagram illustrating an apparatus for establishing a data channel according to an embodiment of the present invention;

FIG. 13 is a diagram illustrating an apparatus for establishing a data channel according to an embodiment of the present invention;

FIG. 14 is a schematic view of an electronic device according to an embodiment of the invention;

FIG. 15 is a schematic view of an electronic device according to an embodiment of the invention;

FIG. 16 is a schematic view of an electronic device according to an embodiment of the invention;

FIG. 17 is a schematic view of an electronic device according to an embodiment of the invention;

fig. 18 is a schematic diagram of an electronic device according to an embodiment of the invention.

Detailed Description

The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the embodiment of the invention, the terminal reachable service is taken as a single service and can be arranged in the AMF, so that the function customization is convenient, and the capacity function of the service is expanded and contracted as required.

In order to realize flexible configuration of reachable services of a terminal and further improve the flexibility of establishing a data channel for the terminal, the embodiment of the invention provides the following solution:

in the scheme 1, when downlink data arrives at a network side but a data channel of a terminal user plane does not exist, related functions (such as a Session Management Function (SMF)) in the network call a terminal reachable service (MT). The terminal reachable service judges the state of the terminal, and if the terminal is found to be in a connected state, the related service is called to establish a user plane data channel for the terminal. If the terminal is in an idle state, the terminal can be paged by the service, and after the terminal responds to the paging and enters a connection state, the related service is called to establish a user plane data channel for the terminal.

And in the scheme 2, the SMF calls the communication service, and the communication service judges the state of the terminal. And if the communication service finds that the terminal is in a connected state, establishing a user plane data channel for the terminal. If the communication service finds that the terminal is in an idle state, the communication service calls the terminal reachable service to page the terminal, and establishes a user plane data channel for the terminal after the terminal responds to the page and enters a connected state.

And 3, the SMF calls the communication service, the communication service does not judge the state of the terminal, but directly calls the reachable service of the terminal, and the reachable service of the terminal judges the state of the terminal. If the terminal reachable service finds that the terminal is in a connected state, the terminal reachable service immediately informs the communication service that the terminal is reachable, and the communication service further establishes a user plane data channel for the terminal. If the terminal reachable service finds that the terminal is in an idle state, the terminal reachable service pages the terminal, and after the terminal responds to paging and enters a connected state, the terminal reachable service responds to the communication service, and the communication service further establishes a user plane data channel for the terminal.

The above-described embodiments will be described in detail with reference to the following examples.

As shown in fig. 1, the method for establishing a data channel according to the embodiment of the present invention is applied to SMF or its related services. Wherein, the SMF-related service refers to a certain service included in the SMF. The method comprises the following steps:

step 101, when downlink data arrives at a network side, directly calling a terminal reachable service to establish a user plane data channel for a terminal; or when downlink data arrives at the network side, indirectly calling the terminal reachable service to establish a user plane data channel for the terminal.

Specifically, when downlink data arrives at the network side, the SMF or its related service may directly invoke the terminal reachable service. Then, when the terminal is determined to be in a connected state, the terminal reachable service invokes an access and mobility management related function or service (such as an AMF or a communication service) to establish a user plane data channel for the terminal; and the terminal reachable service pages the terminal when determining that the terminal is in an idle state, and calls access and mobility management related functions or services to establish a user plane data channel for the terminal after determining that the terminal is in a connected state.

After the user plane data channel is established, the SMF or the related service thereof receives the information of the user plane data channel sent by the terminal reachable service.

Specifically, the process of indirectly invoking the terminal reachable service may include:

when downlink data arrives at a network side, the SMF or the related service thereof calls the access and mobility management related function or service, and the access and mobility management related function or service calls the terminal reachable service to determine that the terminal is in a connected state. When the access and mobility management related function or service receives the information that the terminal reachable service determines that the terminal is in a connected state, a user plane data channel is established for the terminal; and when the access and mobility management related functions or services receive the information that the terminal reachable service determines that the terminal is in the idle state, calling the terminal reachable service to page the terminal, and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

When downlink data arrives at a network side, calling access and mobility management related functions or services, and establishing a user plane data channel for the terminal when the access and mobility management related functions or services determine that the terminal is in a connected state; and when the access and mobility management related functions or services determine that the terminal is in an idle state, calling a terminal reachable service to page the terminal, and establishing a user plane data channel for the terminal after determining that the terminal is in a connected state.

After the user plane data channel is established, the SMF or the related service thereof receives the information of the user plane data channel sent by the access and mobility management related function or service.

As shown in fig. 2, the method for establishing a data channel according to the embodiment of the present invention is applied to a terminal-reachable service, and includes:

step 201, receiving a data channel establishment notification of the SMF or its related service.

When downlink data arrives at the network side, the SFM may notify the terminal accessible service to establish a data channel for the terminal, for example, the SMF or its related service may send a data channel establishment notification to the terminal accessible service; accordingly, the terminal-reachable-service may receive the data-channel setup notification.

Step 202, establishing a user plane data channel for the terminal according to the data channel establishment notification.

In this step, the terminal reachable service may obtain state information of the terminal; when the terminal is determined to be in a connection state according to the state information, calling access and mobility management related functions or services to establish a user plane data channel for the terminal; and when the terminal is determined to be in an idle state according to the state information, paging the terminal, and after the terminal is determined to be in a connection state, calling access and mobility management related functions or services to establish a user plane data channel for the terminal.

Specifically, the invoking of the access and mobility management related function or service to establish the user plane data channel for the terminal includes:

the terminal reachable service sends a calling request to the access and mobility management related function or service, and the calling request carries a terminal reachable indication, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the terminal reachable indication; or

The terminal reachable service sends a calling request to the access and mobility management related function or service, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the calling request.

After the user plane data channel is established, the terminal reachable service may send the information of the user plane data channel to the SMF or its related service.

In the embodiment of the invention, the user plane data channel can be established for the terminal by directly calling the terminal reachable service. The terminal reachable service is taken as an independent service, so that the flexible configuration of the terminal reachable service can be realized, and the flexibility of establishing a data channel for the terminal is further improved.

As shown in fig. 3, the method for establishing a data channel according to the embodiment of the present invention is applied to a terminal-reachable service, and includes:

step 301, obtaining the state information of the terminal according to the indication of the access and mobility management related function or service.

When downlink data arrives at the network side, the SMF or the related service thereof can inform the access and mobility management related function or service to establish a user plane data channel for the terminal. The access and mobility management related functions or services can judge the state of the terminal by themselves or indicate that the terminal can reach the service to judge the state of the terminal.

If the access and mobility management related functions or services indicate that the terminal can reach the service, the terminal can be indicated to reach the service. At this time, the reachable service of the terminal obtains the state information of the terminal according to the indication of the access and mobility management related functions or services.

Step 302, when the terminal is determined to be in the connection state according to the state information, notifying access and mobility management related functions or services that the terminal is reachable, so as to establish a user plane data channel for the terminal by the access and mobility management related functions or services.

Step 303, when it is determined that the terminal is in an idle state according to the state information, paging the terminal, and when the terminal is in a connection state, notifying access and mobility management related functions or services that the terminal is reachable, so as to establish a user plane data channel for the terminal by the access and mobility management related functions or services.

In the embodiment of the invention, the user plane data channel can be established for the terminal by indirectly calling the terminal reachable service. The terminal reachable service is taken as an independent service, so that the flexible configuration of the terminal reachable service can be realized, and the flexibility of establishing a data channel for the terminal is further improved.

As shown in fig. 4, the method for establishing a data channel according to the embodiment of the present invention is applied to a terminal-reachable service, and includes:

step 401, when the access and mobility management related function or service determines that the terminal is in an idle state, paging the terminal according to the indication of the access and mobility management related function or service, and when the terminal is in a connection state, notifying the access and mobility management related function or service that the terminal is reachable, so as to establish a user plane data channel for the terminal by the access and mobility management related function or service.

If the access and mobility management related function or service judges the state of the terminal, then the access and mobility management related function or service can indicate that the terminal can reach the service paging terminal when the terminal is judged to be in an idle state. Correspondingly, the terminal reachable service pages the terminal according to the indication of the access and mobility management related function or service, and informs the access and mobility management related function or service that the terminal is reachable when the terminal is connected, so that a user plane data channel is established for the terminal by the access and mobility management related function or service.

As shown in fig. 5, the method for establishing a data channel according to the embodiment of the present invention is applied to access and mobility management related functions or services, and includes:

step 501, receiving a data channel establishment notification of the SMF or its related service.

And 502, establishing a user plane data channel for the terminal according to the data channel establishing notice.

Wherein, in this step, the access and mobility management related function or service acquires the state information of the terminal. When the terminal is determined to be in a connection state according to the state information, establishing a user plane data channel for the terminal; and calling a terminal reachable service to page the terminal when the terminal is determined to be in an idle state according to the state information, and establishing a user plane data channel for the terminal after receiving the information that the terminal reachable service determines that the terminal is in a connected state.

Alternatively, in this step, the access and mobility management related functions or services invoke terminal reachable services to determine that the terminal is in a connected state. And after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

Specifically, the invoking the terminal reachable service to determine that the terminal is in the connected state includes:

In the following embodiments, the implementation process of the embodiments of the present invention is described in detail by taking interaction among the SMF, the communication service, the reachable service of the terminal, and several entities of the terminal as an example.

As shown in fig. 6, the method for establishing a data channel according to the embodiment of the present invention includes:

step 601, after receiving the user plane Downlink Data channel establishment notification, the SMF initiates a Downlink Data arrival notification (or a user plane Data channel establishment notification) to the terminal reachable service, where the notification includes an identifier of a PDU (Protocol Data Unit) session.

Step 602, after receiving the notification, the terminal reachable service determines whether the terminal is in a connected state:

a) if the terminal is in an idle state, paging is initiated. After receiving the paging, the terminal sends a response to the terminal-reachable service, and the terminal-reachable service stops paging, and then the step 603 is performed.

b) If the terminal is in the connected state, step 603 is entered.

Step 603, the terminal reachable service sends a request for establishing a user plane channel to the communication reachable service to inform the terminal of being reachable. The terminal reachable service calls corresponding communication service according to the user information and carries the identification of the PDU conversation.

Step 604, the communication service initiates a user plane data channel establishment request to the base station side according to the session identifier (other possible information, such as the user ID), and informs the terminal of the availability of the user plane downlink and uplink channel information through the user plane channel establishment request.

Meanwhile, the communication service may send a user plane channel setup response to the terminal reachable service.

Step 605, the terminal reachable service sends a Downlink data notification ACK (Downlink data notify ACK) to the SMF, and notifies the SMF of the user plane data channel information.

The SMF may further interact with the user plane Network function subsequently to complete the establishment of a user channel between the RAN (Radio Access Network) and the user plane.

As shown in fig. 7, the method for establishing a data channel according to the embodiment of the present invention includes:

step 701, a service managed by a user plane (e.g. SMF) in the network invokes a control plane service (e.g. a communication service in AMF), and initiates a downlink data transfer request service. The SMF may select a corresponding communication service based on the PDU session identification of the user. The SMF transmits a Downlink data notify (Downlink data notify) to the communication service.

Step 702, the communication service judges whether the terminal is in a connected state:

a) if the communication service determines that the terminal is in the connected state, the process directly proceeds to step 703.

a) If the terminal is in the idle state, calling the terminal reachable (or paging) service, and sending a request for the terminal to enter the connection state to the terminal reachable service, so that the terminal reachable service initiates a paging request according to the request. The terminal responds to the paging, and the terminal can reach the service and stop paging. Then, the terminal reachable service informs the communication service that the terminal enters an Active (or reachable) state through establishing a user plane channel request (Active UE response). And after the terminal enters the connection state, sending a response that the terminal enters the connection state to the communication service.

Step 703, the communication service establishes a user plane data channel for the terminal.

Step 704, the communication service sends Downlink data notify ACK to SMF and informs the user plane management service of the information of the user plane data channel

As shown in fig. 8, the method for establishing a data channel according to the embodiment of the present invention includes:

step 801, a service managed by a user plane (such as SMF) in the network invokes a control plane service (such as a communication service in AMF), and initiates a downlink data transfer request service. The SMF may select a corresponding communication service based on the PDU session identification of the user. The SMF transmits a Downlink data notify (Downlink data notify) to the communication service.

Step 802, the communication service calls a terminal reachable service, and sends a terminal connection state entering request to the terminal reachable service.

If the information that the terminal is in the connection state is received, the step 805 is directly entered. Otherwise, step 803-804 is performed.

Step 803, if the terminal is judged to be in the idle state, paging is initiated to the terminal. The terminal responds to the paging, and the terminal can reach the service and stop paging.

Step 804, the terminal reachable service informs the communication service that the terminal is in an Active (or reachable) state by sending a request that the terminal enters a connected state.

Step 805, the communication service establishes a user plane data channel for the terminal.

Step 806, the communication service sends a Downlink data notification ACK (Downlink data notify ACK) to the SMF, and notifies the user plane management service of the information of the user plane data channel.

As shown in fig. 9, the apparatus for establishing a data channel according to the embodiment of the present invention is disposed in an SMF or a related service thereof, and includes: a processor 901 and a transceiver 902;

the processor 901 is configured to directly invoke a terminal reachable service to establish a user plane data channel for the terminal when downlink data arrives at the network side; or when downlink data arrives at the network side, indirectly calling the terminal reachable service to establish a user plane data channel for the terminal;

the transceiver 902 is used for receiving and transmitting data under the control of the processor.

The processor 901 is further configured to directly invoke a terminal-reachable service, where the terminal-reachable service invokes access and mobility management related functions or services to establish a user plane data channel for the terminal when determining that the terminal is in a connected state; and the terminal reachable service pages the terminal when determining that the terminal is in an idle state, and calls access and mobility management related functions or services to establish a user plane data channel for the terminal after determining that the terminal is in a connected state.

The transceiver 902 is further configured to receive information of a user plane data channel sent by the terminal reachable service.

The processor 901 is further configured to invoke an access and mobility management related function or service, where the access and mobility management related function or service invokes a terminal reachable service to determine that the terminal is in a connected state; when the access and mobility management related function or service receives the information that the terminal reachable service determines that the terminal is in a connected state, a user plane data channel is established for the terminal; and when the access and mobility management related functions or services receive the information that the terminal reachable service determines that the terminal is in the idle state, calling the terminal reachable service to page the terminal, and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

The processor 901 is further configured to invoke an access and mobility management related function or service, where the access and mobility management related function or service establishes a user plane data channel for the terminal when determining that the terminal is in a connected state; and when the access and mobility management related functions or services determine that the terminal is in an idle state, calling a terminal reachable service to page the terminal, and establishing a user plane data channel for the terminal after determining that the terminal is in a connected state.

The transceiver 902 is further configured to receive information of a user plane data channel sent by the access and mobility management related function or service.

As shown in fig. 10, the apparatus for establishing a data channel according to the embodiment of the present invention is configured in a terminal-reachable service, and includes: a processor 1001 and a transceiver 1002;

the transceiver 1002 is configured to receive a data channel establishment notification of a session management function SMF or a service related thereto; the processor 1001 is configured to establish a user plane data channel for the terminal according to the data channel establishment notification.

The processor 1001 is further configured to obtain state information of the terminal; when the terminal is determined to be in a connection state according to the state information, calling access and mobility management related functions or services to establish a user plane data channel for the terminal; and when the terminal is determined to be in an idle state according to the state information, paging the terminal, and after the terminal is determined to be in a connection state, calling access and mobility management related functions or services to establish a user plane data channel for the terminal.

The processor 1001 is further configured to send a call request to the access and mobility management related function or service through the transceiver 1002, where the call request carries a terminal reachable indication, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the terminal reachable indication; or sending a call request to the access and mobility management related function or service through the transceiver 1002, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the call request.

As shown in fig. 11, the apparatus for establishing a data channel according to the embodiment of the present invention is configured in a terminal-reachable service, and includes: a processor 1101 and a transceiver 1102;

the processor 1101 is configured to obtain state information of the terminal according to an instruction of an access and mobility management related function or service; when the terminal is determined to be in a connection state according to the state information, informing that the access and mobility management related functions or services are accessible to the terminal, and establishing a user plane data channel for the terminal by the access and mobility management related functions or services; when the terminal is determined to be in an idle state according to the state information, paging the terminal, and when the terminal is connected, informing access and mobility management related functions or services that the terminal is accessible, so that a user plane data channel is established for the terminal by the access and mobility management related functions or services;

the transceiver 1102 is configured to receive and transmit data under control of the processor.

As shown in fig. 12, the apparatus for establishing a data channel according to the embodiment of the present invention is configured in a terminal-reachable service, and includes: a processor 1201 and a transceiver 1202;

the processor 1201 is configured to page the terminal according to an indication of the access and mobility management related function or service when the access and mobility management related function or service determines that the terminal is in an idle state, and notify that the access and mobility management related function or service is reachable when the terminal is in a connected state, so that a user plane data channel is established for the terminal by the access and mobility management related function or service;

the transceiver 1202 is configured to receive and transmit data under control of the processor.

As shown in fig. 13, the apparatus for establishing a data channel according to the embodiment of the present invention is configured in an access and mobility management related function or service, and includes: a processor 1301 and a transceiver 1302;

the transceiver 1302 is configured to receive a data channel establishment notification of a session management function SMF or a service related thereto;

the processor 1301 is configured to establish a user plane data channel for the terminal according to the data channel establishment notification.

The processor 1301 is further configured to acquire state information of the terminal; when the terminal is determined to be in a connection state according to the state information, establishing a user plane data channel for the terminal; and calling a terminal reachable service to page the terminal when the terminal is determined to be in an idle state according to the state information, and establishing a user plane data channel for the terminal after receiving the information that the terminal reachable service determines that the terminal is in a connected state.

The processor 1301 is further configured to invoke a terminal reachable service to determine that the terminal is in a connected state; and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

The processor 1301 is further configured to receive, through the transceiver 1302, a response message of the terminal-reachable service, determine that the terminal is in a connected state according to the response message, and include a terminal-reachable indication in the response message; or receiving a response message of the reachable service of the terminal through the transceiver 1302, obtaining context information of the terminal according to the response message, and determining that the terminal is in a connected state according to the context information.

As shown in fig. 14, the electronic device according to the embodiment of the present invention includes:

the processor 1400 is used for reading the program in the memory 1420 and executing the following processes:

when downlink data arrives at a network side, directly calling a terminal reachable service to establish a user plane data channel for the terminal; or when downlink data arrives at the network side, indirectly calling the terminal reachable service to establish a user plane data channel for the terminal.

A transceiver 1410 for receiving and transmitting data under the control of the processor 1400.

Where in fig. 14 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors, represented by the processor 1400, and various circuits of memory, represented by the memory 1420, 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 1410 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 may store data used by the processor 1400 in performing operations.

The processor 1400 is further configured to read the computer program and perform the steps of directly invoking a terminal-reachable service, which invokes an access and mobility management related function or service to establish a user plane data channel for the terminal when determining that the terminal is in a connected state; and the terminal reachable service pages the terminal when determining that the terminal is in an idle state, and calls access and mobility management related functions or services to establish a user plane data channel for the terminal after determining that the terminal is in a connected state.

The processor 1400 is further configured to read the computer program and execute the following steps:

and receiving information of the user plane data channel sent by the terminal reachable service through the transceiver 1410.

information of the user plane data channel sent by the access and mobility management related functions or services is received through the transceiver 1410.

As shown in fig. 15, the electronic device according to the embodiment of the present invention includes:

the processor 1500, which is used to read the program in the memory 1520, executes the following processes:

receiving, by the transceiver 1510, a data channel setup notification of a session management function, SMF, or a service related thereto; and establishing a user plane data channel for the terminal according to the data channel establishing notice.

A transceiver 1510 for receiving and transmitting data under the control of the processor 1500.

In fig. 15, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1500 and various circuits of memory represented by memory 1520 being 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 1510 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1500 in performing operations.

The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1520 may store data used by the processor 1500 in performing operations.

The processor 1500 is further adapted to read the computer program and perform the following steps:

acquiring state information of the terminal; when the terminal is determined to be in a connection state according to the state information, calling access and mobility management related functions or services to establish a user plane data channel for the terminal; and when the terminal is determined to be in an idle state according to the state information, paging the terminal, and after the terminal is determined to be in a connection state, calling access and mobility management related functions or services to establish a user plane data channel for the terminal.

sending a call request to the access and mobility management related function or service through a transceiver 1510, wherein the call request carries a terminal reachable indication, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the terminal reachable indication; or

A call request is sent to the access and mobility management related function or service through the transceiver 1510, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the call request.

As shown in fig. 16, the electronic device according to the embodiment of the present invention includes:

the processor 1600, which is used to read the program in the memory 1620, executes the following processes:

acquiring state information of the terminal according to the indication of the access and mobility management related functions or services; when the terminal is determined to be in a connection state according to the state information, informing that the access and mobility management related functions or services are accessible to the terminal, and establishing a user plane data channel for the terminal by the access and mobility management related functions or services; and when the terminal is determined to be in an idle state according to the state information, paging the terminal, and when the terminal is connected, informing the access and mobility management related function or service that the terminal can be reached so as to establish a user plane data channel for the terminal by the access and mobility management related function or service.

A transceiver 1610 for receiving and transmitting data under the control of the processor 1600.

In fig. 16, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the processor 1600 and various circuits of the memory represented by the memory 1620 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 1610 can be a plurality of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1600 in performing operations.

The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1600 in performing operations.

As shown in fig. 17, the electronic device according to the embodiment of the present invention includes:

a processor 1700 configured to read the program in the memory 1720 and execute the following processes:

receiving, by the transceiver 1710, a data channel setup notification for a session management function, SMF, or a service related thereto; and establishing a user plane data channel for the terminal according to the data channel establishing notice.

A transceiver 1710 for receiving and transmitting data under the control of the processor 1700.

In fig. 17, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1700 and various circuits of memory represented by memory 1720 being 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 1710 may be a plurality of elements including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1700 is responsible for managing the bus architecture and general processing, and the memory 1720 may store data used by the processor 1700 in performing operations.

The processor 1700 is responsible for managing the bus architecture and general processing, and the memory 1720 may store data used by the processor 1700 in performing operations.

The processor 1700 is further configured to read the computer program and perform the following steps:

acquiring state information of the terminal; when the terminal is determined to be in a connection state according to the state information, establishing a user plane data channel for the terminal; and calling a terminal reachable service to page the terminal when the terminal is determined to be in an idle state according to the state information, and establishing a user plane data channel for the terminal after receiving the information that the terminal reachable service determines that the terminal is in a connected state.

calling a terminal reachable service to determine that the terminal is in a connected state; and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

As shown in fig. 18, the electronic device according to the embodiment of the present invention includes:

the processor 1800, which reads the program stored in the memory 1820, executes the following processes:

when the access and mobility management related function or service determines that the terminal is in an idle state, paging the terminal according to the indication of the access and mobility management related function or service, and when the terminal is in connection, informing the access and mobility management related function or service that the terminal is reachable, so as to establish a user plane data channel for the terminal by the access and mobility management related function or service;

a transceiver 1810 for receiving and transmitting data under the control of the processor 1800.

In fig. 18, among other things, the bus architecture may include any number of interconnected buses and bridges with various circuits including one or more processors, represented by the processor 1800, and memory, represented by the memory 1820. 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 1810 may be a plurality of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 may store data used by the processor 1800 in performing operations.

The processor 1800 is responsible for managing the bus architecture and general processing, and the memory 1820 may store data used by the processor 1800 in performing operations.

The processor 1800 is further configured to read the computer program and perform the following steps:

Furthermore, a computer-readable storage medium of an embodiment of the present invention stores a computer program executable by a processor to implement:

Wherein the computer program is executable by a processor to implement the steps of:

The computer program is executable by a processor to implement the steps of: and receiving the information of the user plane data channel sent by the access and mobility management related function or service.

acquiring state information of the terminal;

Wherein, the establishing a user plane data channel for the terminal includes:

acquiring state information of the terminal;

Wherein, the establishing a user plane data channel for the terminal includes:

Compared with the prior art, the scheme of the embodiment of the invention can realize the function decoupling of the control plane network, is realized in a mode that the independent terminal can reach the service, and is beneficial to realizing paging as an independent service, thereby realizing the expansion and contraction of the paging capacity.

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

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for establishing a data channel, which is applied to a Session Management Function (SMF) or a service related to the SMF, includes:

When downlink data arrives at a network side, indirectly calling a terminal reachable service to establish a user plane data channel for the terminal;

when a user plane data channel is established, the terminal is in a connection state;

directly calling a terminal reachable service, wherein when the terminal is determined to be in a connected state, the terminal reachable service calls access and mobility management related functions or services to establish a user plane data channel for the terminal; the terminal reachable service pages the terminal when determining that the terminal is in an idle state, and calls access and mobility management related functions or services to establish a user plane data channel for the terminal after determining that the terminal is in a connected state;

calling access and mobility management related functions or services, wherein the access and mobility management related functions or services call terminal reachable services to determine that the terminal is in a connected state; when the access and mobility management related function or service receives the information that the terminal reachable service determines that the terminal is in a connected state, a user plane data channel is established for the terminal; when the access and mobility management related functions or services receive the information that the terminal reachable service determines that the terminal is in an idle state, calling the terminal reachable service to page the terminal, and after receiving the information that the terminal reachable service determines that the terminal is in a connected state, establishing a user plane data channel for the terminal;

or, the indirectly invoking the terminal reachable service to establish the user plane data channel for the terminal includes:

2. The method of claim 1, further comprising:

3. The method according to claim 1 or the method, further comprising:

4. A method for establishing a data channel, which is applied to a terminal reachable service, includes:

establishing a user plane data channel for the terminal according to the data channel establishing notice;

acquiring state information of the terminal;

5. The method of claim 4, wherein the invoking the access and mobility management related function or service to establish a user plane data channel for the terminal comprises:

6. A method for establishing a data channel, which is applied to a terminal reachable service, includes:

7. A method for establishing a data channel, which is applied to a terminal reachable service, includes:

8. A method for establishing a data channel, applied to access and mobility management related functions or services, includes:

and establishing a user plane data channel for the terminal when the terminal is determined to be in a connection state through the terminal reachable service according to the data channel establishment notification.

9. The method of claim 8, wherein establishing the user plane data channel for the terminal comprises:

acquiring state information of the terminal;

10. The method of claim 8, wherein establishing the user plane data channel for the terminal comprises:

11. The method of claim 10, wherein invoking the terminal-reachable service to determine that the terminal is in a connected state comprises:

12. An apparatus for establishing a data channel, comprising: a processor and a transceiver;

the transceiver is used for receiving and transmitting data under the control of the processor;

the processor is further configured to directly invoke a terminal-reachable service, and when the terminal-reachable service determines that the terminal is in a connected state, invoke access and mobility management related functions or services to establish a user plane data channel for the terminal; the terminal reachable service pages the terminal when determining that the terminal is in an idle state, and calls access and mobility management related functions or services to establish a user plane data channel for the terminal after determining that the terminal is in a connected state;

the processor is further configured to invoke access and mobility management related functions or services, where the access and mobility management related functions or services invoke terminal reachable services to determine that the terminal is in a connected state; when the access and mobility management related function or service receives the information that the terminal reachable service determines that the terminal is in a connected state, a user plane data channel is established for the terminal; when the access and mobility management related functions or services receive the information that the terminal reachable service determines that the terminal is in an idle state, calling the terminal reachable service to page the terminal, and after receiving the information that the terminal reachable service determines that the terminal is in a connected state, establishing a user plane data channel for the terminal; or the processor is further configured to invoke access and mobility management related functions or services, and establish a user plane data channel for the terminal when the access and mobility management related functions or services determine that the terminal is in a connected state; and when the access and mobility management related functions or services determine that the terminal is in an idle state, calling a terminal reachable service to page the terminal, and establishing a user plane data channel for the terminal after determining that the terminal is in a connected state.

13. The apparatus of claim 12, wherein the transceiver is further configured to receive information of a user plane data channel transmitted by the terminal-reachable service.

14. The apparatus of claim 12, wherein the transceiver is further configured to receive information of a user plane data channel sent by the access and mobility management related function or service.

15. An apparatus for establishing a data channel, applied to a terminal-reachable service, comprising: a processor and a transceiver;

the processor is used for establishing a user plane data channel for the terminal according to the data channel establishment notice;

16. The device of claim 15, wherein the processor is further configured to send, through the transceiver, a call request to the access and mobility management related function or service, where the call request carries a terminal reachable indication, so that the access and mobility management related function or service establishes a user plane data channel for the terminal after determining that the terminal is in a connected state according to the terminal reachable indication; or

17. An apparatus for establishing a data channel, comprising: a processor and a transceiver;

18. An apparatus for establishing a data channel, comprising: a processor and a transceiver;

19. An apparatus for establishing a data channel, which is applied to access and mobility management related functions or services, comprising: a processor and a transceiver;

and the processor is used for establishing a user plane data channel for the terminal when the terminal is determined to be in a connection state through the terminal reachable service according to the data channel establishment notification.

20. The apparatus of claim 19, wherein the processor is further configured to obtain status information of the terminal; when the terminal is determined to be in a connection state according to the state information, establishing a user plane data channel for the terminal; and calling a terminal reachable service to page the terminal when the terminal is determined to be in an idle state according to the state information, and establishing a user plane data channel for the terminal after receiving the information that the terminal reachable service determines that the terminal is in a connected state.

21. The apparatus of claim 19, wherein the processor is further configured to invoke a terminal-reachable service to determine that the terminal is in a connected state; and after receiving the information that the terminal reachable service determines that the terminal is in the connected state, establishing a user plane data channel for the terminal.

22. The apparatus of claim 21, wherein the processor is further configured to,

23. An electronic device comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; characterized in that the processor realizes the steps in the method according to any one of claims 1 to 3 when executing the computer program.

24. An electronic device comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; characterized in that the processor realizes the steps in the method according to any one of claims 4 to 5 when executing the computer program.

25. An electronic device comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; characterized in that the processor realizes the steps in the method according to claim 6 when executing the computer program.

26. An electronic device comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; characterized in that the processor realizes the steps in the method according to claim 7 when executing the computer program.

27. An electronic device comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the computer program, carries out the steps of the method according to any of claims 8-11.

28. A computer-readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the steps in the method according to any one of claims 1 to 3; or which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 4 to 5; or which computer program, when being executed by a processor, carries out the steps of the method as claimed in claim 6; or which computer program, when being executed by a processor, carries out the steps of the method as claimed in claim 7; or which computer program, when being executed by a processor, carries out the steps of the method according to any one of claims 8 to 11.