CN114080000A

CN114080000A - Network slice determining method and device, core network equipment and terminal

Info

Publication number: CN114080000A
Application number: CN202010805736.1A
Authority: CN
Inventors: 侯云静; 邓强
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2022-02-22
Anticipated expiration: 2040-08-12
Also published as: CN114080000B

Abstract

The embodiment of the invention provides a method and a device for determining a network slice, core network equipment and a terminal, wherein the method comprises the following steps: acquiring first allowable network slice selection auxiliary information NSSAI of a relay terminal; according to the first NSSAI allowed by the relay terminal, first information is sent to the remote terminal; the first information includes: a second allowed NSSAI of the remote terminal; the embodiment of the invention determines the second allowed NSSAI of the remote terminal based on the first allowed NSSAI of the relay terminal, so that the network slice allowed to be used by the remote terminal can be determined when the remote terminal is connected with the N3IWF through the relay terminal.

Description

Network slice determining method and device, core network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for determining a network slice, a core network device, and a terminal.

Background

Fig. 1 shows an infrastructure of a terminal-to-Network Relay (UE-to-Network Relay) in 5G. When the terminal equipment is out of the network coverage range or the Uu interface signal quality is poor, the terminal equipment cannot be directly connected with the network, and the terminal equipment with the Relay function can be connected with the network, wherein the terminal equipment is called Remote terminal (Remote UE), and the terminal equipment with the Relay function is called Relay terminal (Relay UE). As shown in fig. 1, the relay terminal 12 registers in the network device 13, and establishes a Protocol Data Unit (PDU) session and a Quality of Service (QoS) flow to implement communication with the network. The remote terminal 11 communicates with the relay terminal 12 through a PC5 interface (a communication interface between terminal devices), and performs data forwarding through a PDU session and a QoS flow of the relay terminal 12, so as to achieve the purpose of communicating with a network.

When a remote terminal uses a terminal device to relay transmission terminal flow to a network, in order to support end-to-end security of data, the remote terminal registers to a 5G core network through a Non-3GPP InterWorking Function (N3 IWF), and then establishes a PDU session. The internet security protocol IPSec between the remote terminal and the N3IWF is responsible for protecting the data transmitted over the PDU session.

In the prior art, the problem of how to determine the network slice available for the remote terminal in the scenario that the remote terminal is connected to the N3IWF through the relay terminal is not considered.

Disclosure of Invention

An embodiment of the present invention provides a method and an apparatus for determining a network slice, a core network device, and a terminal, so as to solve a problem in the prior art that a network slice that can be used by a remote terminal cannot be determined.

In order to solve the above problem, an embodiment of the present invention provides a method for determining a network slice, which is applied to a core network device of a remote terminal, and includes:

acquiring first allowable network slice selection auxiliary information NSSAI of a relay terminal;

according to the first NSSAI allowed by the relay terminal, first information is sent to the remote terminal; the first information includes: a second NSSAI allowed for the remote terminal.

Wherein the first information further comprises:

mapping relation between the second allowed NSSAI of the remote terminal and the first allowed NSSAI of the relay terminal;

and/or the presence of a gas in the gas,

a first allowed NSSAI of the relay terminal mapped with a second allowed NSSAI of the remote terminal.

Wherein, the obtaining of the first allowed network slice selection auxiliary information NSSAI of the relay terminal includes:

receiving a first registration request sent by a remote terminal, wherein the first registration request carries a first allowed NSSAI of the relay terminal.

receiving a second registration request sent by a remote terminal, wherein the second registration request carries the identifier of the relay terminal;

sending a first request message to core network equipment of the relay terminal according to the identifier of the relay terminal, wherein the first request message carries the identifier of the relay terminal;

and receiving a first response message sent by the core network equipment of the relay terminal, wherein the first response message carries the first allowed NSSAI of the relay terminal.

Wherein sending first information to the remote terminal comprises:

and sending a registration acceptance message to the remote terminal, wherein the registration acceptance message carries the first information.

Wherein the method further comprises:

determining the first information according to a first allowed NSSAI of the relay terminal;

alternatively, the first and second electrodes may be,

sending a slicing request message to a network slicing selection function network element, wherein the slicing request message carries a first allowed NSSAI of the relay terminal; and receiving a slice request response message sent by the network slice selection function network element, wherein the slice request response message carries the first information.

Wherein the method further comprises:

receiving first notification information sent by core network equipment of a relay terminal, wherein the first notification information is used for indicating that NSSAI allowed by the relay terminal is updated; or the first notification information includes the updated allowed NSSAI of the relay terminal;

determining the updated allowed NSSAI of the remote terminal according to the first notification information;

and sending configuration updating information to the remote terminal, wherein the configuration updating information comprises the updated allowed NSSAI of the remote terminal.

The embodiment of the invention also provides a method for determining the network slice, which is applied to a remote terminal and comprises the following steps:

receiving first information sent by core network equipment of a remote terminal according to first allowed network slice selection auxiliary information NSSAI of a relay terminal, wherein the first information comprises: a second NSSAI allowed for the remote terminal.

Wherein the first information further comprises:

and/or the presence of a gas in the gas,

Wherein the method further comprises:

establishing a first Protocol Data Unit (PDU) session corresponding to a first S-NSSAI contained in a second allowed NSSAI according to the second allowed NSSAI of the remote terminal;

if the remote terminal and the relay terminal have established the PC5 connection related to the second S-NSSAI, establishing a mapping relation between the first PDU session and the PC5 connection identifier; wherein the second S-NSSAI is mapped with the first S-NSSAI, and belongs to the first allowed NSSAI of the relay terminal.

Wherein the method further comprises:

if the PC5 connection related to the second S-NSSAI is not established between the remote terminal and the relay terminal, sending a PC5 connection establishment request message to the relay terminal; the PC5 connection establishment request message carries the second S-NSSAI;

receiving a PC5 connection success message sent by the relay terminal after the PDU session related to the second S-NSSAI is established;

a mapping between the first PDU session and the identity of the PC5 connection is established.

Before the receiving the first information sent by the core network device of the remote terminal according to the first allowed network slice selection auxiliary information NSSAI of the relay terminal, the method further includes:

sending a first registration request or a second registration request to core network equipment of a remote terminal, wherein the first registration request carries a first allowed NSSAI of the relay terminal; the second registration request carries the identifier of the relay terminal;

receiving first information sent by core network equipment of a remote terminal according to first allowed network slice selection auxiliary information NSSAI of a relay terminal, wherein the first information comprises:

and receiving a registration receiving message sent by the core network equipment of the remote terminal, wherein the registration receiving message carries the first information.

Wherein the method further comprises:

receiving second notification information sent by the relay terminal, wherein the second notification information is used for indicating that NSSAI allowed by the relay terminal is updated; or the second notification information includes the updated allowed NSSAI of the relay terminal;

sending a first registration request or a second registration request to core network equipment of a remote terminal, wherein the first registration request or the second registration request comprises:

and sending a first registration request or a second registration request to the core network equipment of the remote terminal according to the second notification information.

Wherein the method further comprises:

receiving configuration update information sent by core network equipment of a remote terminal, wherein the configuration update information comprises updated allowed NSSAI of the remote terminal.

The embodiment of the invention also provides core network equipment of the remote terminal, which comprises a memory, a transceiver and a processor: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

Wherein the first information further comprises:

and/or the presence of a gas in the gas,

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

alternatively, the first and second electrodes may be,

The embodiment of the present invention further provides a device for determining a network slice, which is applied to a core network device of a remote terminal, and includes:

an obtaining unit, configured to obtain first allowed network slice selection assistance information NSSAI of a relay terminal;

a sending unit, configured to send first information to the remote terminal according to a first allowed NSSAI of the relay terminal; the first information includes: a second NSSAI allowed for the remote terminal.

The embodiment of the invention also provides a terminal, which is a far-end terminal and comprises a memory, a transceiver and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

Wherein the first information further comprises:

and/or the presence of a gas in the gas,

The embodiment of the present invention further provides a device for determining a network slice, which is applied to a remote terminal, and includes:

a receiving unit, configured to receive first information sent by a core network device of a remote terminal according to first allowed network slice selection auxiliary information NSSAI of a relay terminal, where the first information includes: a second NSSAI allowed for the remote terminal.

An embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is configured to cause the processor to execute the method described above.

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

in the method, the device, the core network equipment and the terminal for determining the network slice of the embodiment of the invention, the second allowed NSSAI of the remote terminal is determined based on the first allowed NSSAI of the relay terminal, so that the network slice allowed to be used by the remote terminal can be determined when the remote terminal is connected with the N3IWF through the relay terminal.

Drawings

Fig. 1 illustrates a block diagram of a wireless communication system in which embodiments of the present invention are applicable;

fig. 2 is a flowchart illustrating steps of a method for determining a network slice according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a second step of the method for determining a network slice according to the embodiment of the present invention;

FIG. 4 is an interaction diagram of an example I provided by an embodiment of the invention;

FIG. 5 is an interaction diagram of example two provided by an embodiment of the invention;

FIG. 6 shows one of the interaction diagrams of example three provided by embodiments of the present invention;

FIG. 7 is a second interaction diagram of a third example provided by the embodiments of the present invention;

fig. 8 is a flowchart illustrating a third step of a method for determining a network slice according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a core network device according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a network slice determination apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 12 is a second schematic structural diagram of an apparatus for determining a network slice according to an embodiment of the present invention;

fig. 13 is a second schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 14 is a third schematic structural diagram of an apparatus for determining a network slice according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present invention are applicable. The wireless communication system includes a remote terminal 11, a relay terminal 12, and a network-side device 13. The remote terminal and/or the relay terminal according to the embodiments of the present invention may be a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in the embodiments of the present invention. The network side device 13 may be a base station or a core network, and it should be noted that, in the embodiment of the present invention, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The term "plurality" in the embodiments of the present invention means two or more, and other terms are similar thereto.

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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 technical scheme provided by the embodiment of the invention can be suitable for various systems, particularly 5G systems. For example, the applicable System may be a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (General Packet Radio Service, GPRS) System, a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (Frequency Division Duplex, FDD) System, a LTE Time Division Duplex (TDD) System, a Long Term Evolution (Long Term Evolution Access, LTE-a) System, a Universal Mobile Telecommunications System (UMTS), a Universal Mobile telecommunications Access (WiMAX) System, a New Radio network Access (NR 5, WiMAX) System, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

As shown in fig. 2, an embodiment of the present invention further provides a method for determining a network slice, which is applied to a core network device of a remote terminal (for example, an authentication management function AMF network element of the remote terminal), and includes:

step 21, acquiring first allowed network slice selection auxiliary information NSSAI (allowed NSSAI) of the relay terminal;

step 22, sending first information to the remote terminal according to the first allowed NSSAI of the relay terminal; the first information includes: a second NSSAI allowed for the remote terminal.

It should be noted that NSSAI is a set of multiple S-NSSAIs (Single Network Slice Selection Assistance Information), and the S-NSSAI is used to identify one Network Slice.

Wherein the relay terminal is a relay terminal in a terminal-to-network relay (UE-to-NW relay) scenario.

As an optional embodiment, the first information further includes:

and/or the presence of a gas in the gas,

In this case, the core network device of the remote terminal further needs to acquire the PLMN of the relay terminal and the PLMN of the remote terminal. Optionally, if the relay terminal and the remote terminal are located in the same PLMN, the first allowed NSSAI of the relay terminal and the second allowed NSSAI of the remote terminal have the same label; if the relay terminal and the remote terminal are located in different PLMNs, labels of a first allowed NSSAI of the relay terminal and a second allowed NSSAI of the remote terminal may be different, so that the core network device of the remote terminal also needs to send a mapping relationship between the second allowed NSSAI of the remote terminal and the first allowed NSSAI of the relay terminal when sending the second allowed NSSAI to the remote terminal; and/or a first allowed NSSAI of the relay terminal mapped with a second allowed NSSAI of the remote terminal.

As another alternative, step 21 comprises:

receiving a first registration request sent by a remote terminal, wherein the first registration request carries a first allowed NSSAI of the relay terminal. That is, the core network device of the remote terminal obtains the first allowed NSSAI of the relay terminal from the remote terminal, and the remote terminal may obtain the first allowed NSSAI in the relay discovery process.

Alternatively, step 21 comprises:

That is, the core network device of the remote terminal acquires the first allowed NSSAI of the relay terminal from the core network device of the relay terminal.

Bearing the above example, step 22 comprises:

As an alternative embodiment, the method further comprises:

alternatively, the first and second electrodes may be,

sending a slice request message to a network slice selection function NSSF network element, wherein the slice request message carries a first allowed NSSAI of the relay terminal; and receiving a slice request response message sent by the network slice selection function network element, wherein the slice request response message carries the first information.

Optionally, in the above embodiment of the present invention, the method further includes:

In the embodiment of the present invention, the update of the second allowed NSSAI of the remote terminal may be triggered by the update of the first allowed NSSAI of the relay terminal, or may be caused by a factor of the remote terminal itself (for example, subscription change or movement).

Under the condition of being triggered by the updating of the first allowed NSSAI of the relay terminal, the core network equipment of the relay terminal sends first notification information to the core network equipment of the remote terminal, the core network equipment of the remote terminal determines the updated allowed NSSAI of the remote terminal according to the first notification information, and sends the updated allowed NSSAI of the remote terminal to the remote terminal through configuring the updating information.

It should be noted that, in the case that the allowed NSSAI of the remote terminal is updated, since the remote terminal stores the allowed NSSAI and the S-NSSAI of the mapped relay terminal before updating, after updating, the remote terminal may further determine whether the updated allowed NSSAI affects the established PC5 connection, and if the S-NSSAI of the established PC5 connection does not belong to the updated allowed NSSAI any more, the remote terminal needs to release the corresponding PC5 connection.

In summary, in the embodiment of the present invention, the second allowed NSSAI of the remote terminal is determined based on the first allowed NSSAI of the relay terminal, so that when the remote terminal connects to the N3IWF through the relay terminal, a network slice allowed to be used by the remote terminal can be determined.

As shown in fig. 3, an embodiment of the present invention further provides a method for determining a network slice, which is applied to a remote terminal, and includes:

step 31, receiving first information sent by a core network device of a remote terminal according to first allowed network slice selection auxiliary information NSSAI of a relay terminal, where the first information includes: a second NSSAI allowed for the remote terminal.

As an optional embodiment, the first information further includes:

and/or the presence of a gas in the gas,

As an alternative embodiment, the method further comprises:

Correspondingly, the method further comprises the following steps:

and receiving a PC5 connection success message sent by the relay terminal after the PDU session related to the second S-NSSAI is established.

For example, the second allowed NSSAI of the remote terminal includes S-NSSAI1 and S-NSSAI 2. The S-NSSAI of the relay terminal mapped with S-NSSAI1 is S-NSSAI3, and the S-NSSAI of the relay terminal mapped with S-NSSAI2 is S-NSSAI 4.

When the remote terminal requests to establish a PDU session related to S-NSSAI1 (assuming that the PDU session is PDU session 1), the remote terminal finds that the S-NSSAI of the relay terminal mapped with S-NSSAI1 is S-NSSAI3 according to the information, and the remote terminal judges whether to establish PC5 connection related to S-NSSAI 3; if so, storing the mapping relation between PDU conversation 1 and PC5 connection identification; if not, initiating the establishment of PC5 connection, the remote terminal carrying S-NSSAI3 in the connection establishment request, after receiving the request, the relay terminal judging whether to establish PDU session to S-NSSAI3, if not, the relay terminal establishing PDU session related to S-NSSAI 3. After the connection establishment of the PC5 is successful, the remote terminal stores the mapping relationship between PDU session 1 and PC5 connection identification.

As another alternative, before step 31, the method further comprises:

accordingly, step 31 comprises:

As yet another alternative embodiment, the method further comprises:

Alternatively, the method further comprises:

Under the condition of being triggered by the updating of the first NSSAI allowed by the relay terminal, the relay terminal sends second notification information to the remote terminal, and the remote terminal updates the NSSAI allowed by the remote terminal according to the first registration request or the second registration request.

In order to more clearly describe the method for determining a network slice provided by the embodiment of the present invention, the following description is made with reference to several examples.

As an example, a core network device of a remote terminal acquires a first allowed NSSAI of a relay terminal from the remote terminal, as shown in fig. 4:

1. the remote terminal sends a first registration request to core network equipment of the remote terminal, wherein the first registration request comprises a PLMN of the relay terminal and a first allowed NSSAI of the relay terminal. The information of the relay terminals can be obtained by the remote terminal in the relay discovery process.

2. If the NSSF network element determines the second NSSAI allowed by the remote terminal, the core network equipment of the remote terminal sends a slice selection request message to the NSSF network element, wherein the slice selection request message comprises the PLMN of the relay terminal and the first NSSAI allowed by the relay terminal. Otherwise, the core network device of the remote terminal determines the second allowed NSSAI of the remote terminal and skips step 2-3.

The NSSF network element returns a slice selection response message to the core network equipment of the remote terminal, wherein the slice selection response message comprises: the second allowed NSSAI of the far-end terminal, and the S-NSSAI of the relay terminal to which it is mapped.

4. The core network equipment of the far-end terminal sends a registration acceptance message to the far-end terminal, wherein the registration acceptance message comprises: the second allowed NSSAI of the far-end terminal, and the S-NSSAI of the relay terminal to which it is mapped.

It should be noted that the S-NSSAI of the mapped relay terminal in the above process is an optional parameter, and when the remote terminal and the relay terminal are located in the same PLMN, the network does not return the parameter.

The remote terminal stores its second allowed NSSAI, the S-NSSAI of the mapped relay terminal.

In example two, the core network device of the remote terminal acquires the first allowed NSSAI of the relay terminal from the core network device of the relay terminal, as shown in fig. 5:

1. and the remote terminal sends a second registration request to the core network equipment of the remote terminal, wherein the second registration request comprises the identifier of the relay terminal. The remote terminal may obtain the identity of the relay terminal during the relay discovery process.

2. And the core network equipment of the remote terminal sends a first request message to the core network equipment of the relay terminal. Before step 2, the core network device of the remote terminal may obtain information of the core network device of the relay terminal from the unified data management system UDM by providing the identifier of the relay terminal to the UDM.

3. And the core network equipment of the relay terminal returns a first response message to the core network equipment of the remote terminal, wherein the first response message comprises the first allowed NSSAI of the terminal.

4. If the NSSF network element determines the allowed NSSAI of the remote terminal, the core network equipment of the remote terminal sends a slice selection message to the NSSF network element, wherein the slice selection message comprises: the identity of the relay terminal and the first allowed NSSAI allowed by the relay terminal. Otherwise, the core network equipment of the remote terminal determines the allowed NSSAI of the remote terminal.

The 5NSSF network element returns a slice selection response message to the core network equipment of the remote terminal, wherein the slice selection response message comprises: the second allowed NSSAI allowed by the far-end terminal, and the S-NSSAI of the mapped relay terminal.

6. The core network equipment of the far-end terminal sends a registration acceptance message to the far-end terminal, wherein the registration acceptance message comprises: the second allowed NSSAI of the far-end terminal, and the S-NSSAI of the relay terminal to which it is mapped.

Third, the update of the allowed NSSAI of the remote terminal may be triggered by the change of the allowed NSSAI of the relay terminal, or may be caused by factors of the remote terminal itself, such as a subscription change or a mobility.

If the NSSAI change is triggered by the allowed NSSAI change of the relay terminal and the relay terminal can notify the remote terminal of the relevant event, the process of updating the allowed NSSAI of the remote terminal is shown in fig. 6:

1. the relay terminal sends a notification message to the remote terminal, the notification message including a new NSSAI allowed or NSSAI update allowed indication for the relay terminal.

2. The remote terminal triggers the procedure in example one or example two to update its allowed NSSAI.

If the NSSAI change is triggered by the NSSAI change allowed by the relay terminal and the core network device of the relay terminal can notify the core network device of the remote terminal of the event, the process of updating the NSSAI allowed of the remote terminal is shown in fig. 7:

1. the method comprises the following steps that core network equipment of a relay terminal sends first notification information to core network equipment of a far-end terminal, wherein the notification information comprises: the identity of the relay terminal, the allowed NSSAI of the relay terminal.

2. And the core network equipment of the remote terminal determines the allowed NSSAI of the remote terminal and the S-NSSAI of the mapped relay terminal.

3. And if the allowed NSSAI of the remote terminal is changed, the core network equipment of the remote terminal sends configuration updating information to the remote terminal, wherein the configuration updating information comprises the allowed NSSAI and the S-NSSAI of the mapped relay terminal.

As shown in fig. 8, an embodiment of the present invention further provides a method for determining a network slice, which is applied to a remote terminal, and includes:

step 81, determining a request NSSAI (requested NSSAI) of the remote terminal according to the first allowed network slice selection assistance information NSSAI (allowed NSSAI) of the relay terminal.

Namely, the embodiment of the invention is a solution based on the terminal, namely, the remote terminal considers the allowed NSSAI of the relay terminal when determining the request NSSAI of the remote terminal.

As an alternative embodiment, if the relay terminal and the remote terminal are located in the same public land mobile network PLMN, step 81 includes:

determining the request NSSAI of the remote terminal comprises: a first allowed NSSAI of the relay terminal.

As another alternative, if the relay terminal and the remote terminal are located in different public land mobile networks PLMN, step 81 includes:

determining that the first allowed NSSAI is mapped to NSSAI in a PLMN selected by a remote terminal according to the first allowed NSSAI of the relay terminal and preset configuration parameters;

determining the request NSSAI of the remote terminal comprises: the first allowed NSSAI is mapped to part or all of NSSAI within a PLMN selected by the remote terminal.

Specifically, the remote terminal determines the HPLMN S-NSSAI mapped by the NSSAI allowed by the relay terminal according to the configured NSSAI of the PLMN where the relay terminal is located and the mapped HPLMN S-NSSAI (i.e., the S-NSSAI of the subscribed PLMN). And then determining that the allowed NSSAI of the relay terminal is mapped to the S-NSSAI in the PLMN selected by the remote terminal according to the configuration NSSAI of the PLMN selected by the remote terminal and the mapped HPLMN S-NSSAI. The request NSSAI determined by the remote terminal only includes the S-NSSAI described above.

And the remote terminal obtains the HPLMN S-NSSAI mapped with the S-NSSAI in the PLMN1 according to the obtained information and the HPLMN S-NSSAI mapped with the configuration NSSAI of the VPLMN1 in the local configuration information. The far-end terminal acquires an intersection of the HPLMN S-NSSAI mapped by the HPLMN S-NSSAI and the configuration NSSAI of the VPLMN2 configured in the far-end terminal, and the far-end terminal acquires the HPLMN S-NSSAI available for constructing the request NSSAI.

The remote terminal decides to construct an S-NSSAI requesting VPLMN2 available for NSSAI based on the configuration information of VPLMN 2.

In summary, in the embodiment of the present invention, when the remote terminal determines the NSSAI request of the remote terminal, the allowed NSSAI of the relay terminal is considered, so that when the remote terminal connects to the N3IWF through the relay terminal, the network slice allowed to be used by the remote terminal can be determined.

As shown in fig. 9, an embodiment of the present invention further provides a core network device of a remote terminal, which includes a memory 920, a transceiver 910, and a processor 900: a memory 920 for storing a computer program; a transceiver 910 for transceiving data under the control of the processor 900; a processor 900 for reading the computer program in the memory 920 and performing the following operations:

As an optional embodiment, the first information further includes:

and/or the presence of a gas in the gas,

As an alternative embodiment, the processor 900 is further configured to read the computer program in the memory and perform the following operations:

alternatively, the first and second electrodes may be,

In fig. 9, among other things, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 900, and various circuits, represented by memory 920, 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 910 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.

The processor 900 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

In the embodiment of the invention, the second allowed NSSAI of the remote terminal is determined based on the first allowed NSSAI of the relay terminal, so that the network slice allowed to be used by the remote terminal can be determined when the remote terminal is connected with the N3IWF through the relay terminal.

Since the principle of the core network device to solve the problem is similar to the method for determining the network slice in the embodiment of the present invention, the implementation of the core network device may refer to the implementation of the method, and the repeated points are not described again.

As shown in fig. 10, an embodiment of the present invention further provides a device for determining a network slice, which is applied to a core network device of a remote terminal, and includes:

an obtaining unit 101, configured to obtain first allowed network slice selection assistance information NSSAI of a relay terminal;

a sending unit 102, configured to send first information to the remote terminal according to a first allowed NSSAI of the relay terminal; the first information includes: a second NSSAI allowed for the remote terminal.

As an optional embodiment, the first information further includes:

and/or the presence of a gas in the gas,

As an alternative embodiment, the obtaining unit includes:

the first acquiring subunit is configured to receive a first registration request sent by a remote terminal, where the first registration request carries a first allowed NSSAI of the relay terminal.

As an alternative embodiment, the obtaining unit includes:

a second obtaining subunit, configured to receive a second registration request sent by a remote terminal, where the second registration request carries an identifier of the relay terminal;

a third obtaining subunit, configured to send a first request message to a core network device of the relay terminal according to the identifier of the relay terminal, where the first request message carries the identifier of the relay terminal;

a fourth obtaining subunit, configured to receive a first response message sent by a core network device of the relay terminal, where the first response message carries a first allowed NSSAI of the relay terminal.

As an alternative embodiment, the sending unit includes:

and the sending subunit is configured to send a registration acceptance message to the remote terminal, where the registration acceptance message carries the first information.

As an alternative embodiment, the apparatus further comprises:

an information determining unit, configured to determine the first information according to a first allowed NSSAI of the relay terminal;

or, the system is configured to send a slice request message to a network slice selection function network element, where the slice request message carries a first allowed NSSAI of the relay terminal; and receiving a slice request response message sent by the network slice selection function network element, wherein the slice request response message carries the first information.

As an alternative embodiment, the apparatus further comprises:

a notification receiving unit, configured to receive first notification information sent by a core network device of a relay terminal, where the first notification information is used to indicate that an NSSAI allowed by the relay terminal is updated; or the first notification information includes the updated allowed NSSAI of the relay terminal;

an update determining unit, configured to determine, according to the first notification information, an updated allowed NSSAI of the remote terminal;

an update sending unit, configured to send configuration update information to the remote terminal, where the configuration update information includes an updated allowed NSSAI of the remote terminal.

Since the principle of solving the problem of the network slice determining device is similar to that of the network slice determining method in the embodiment of the present invention, the implementation of the network slice determining device can be referred to the implementation of the method, and the repetition part is not repeated.

As shown in fig. 11, the embodiment of the present invention further provides a terminal, which is a remote terminal, and includes a memory 1120, a transceiver 1110, a processor 1100, a user interface 1130;

a memory 1120 for storing a computer program; a transceiver 1110 for transceiving data under control of the processor; a processor 1100 for reading the computer program in the memory 1120 and performing the following operations:

As an optional embodiment, the first information further includes:

and/or the presence of a gas in the gas,

As an alternative embodiment, the processor 1100 is further configured to read the computer program in the memory and perform the following operations:

Where in fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1100, and various circuits, represented by memory 1120, 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 1110 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. For different user devices, the user interface 1130 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 600 in performing operations.

Alternatively, the processor 1100 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also have a multi-core architecture.

The processor is used for executing any method provided by the embodiment of the invention according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Since the principle of the terminal to solve the problem is similar to the method for determining the network slice in the embodiment of the present invention, the implementation of the terminal may refer to the implementation of the method, and the repetition part is not described again.

As shown in fig. 12, an embodiment of the present invention further provides a device for determining a network slice, which is applied to a remote terminal, and includes:

a receiving unit 121, configured to receive first information sent by a core network device of a remote terminal according to first allowed network slice selection auxiliary information NSSAI of a relay terminal, where the first information includes: a second NSSAI allowed for the remote terminal.

As an optional embodiment, the first information further includes:

and/or the presence of a gas in the gas,

As an alternative embodiment, the apparatus further comprises:

a first establishing unit, configured to establish, according to a second allowed NSSAI of the remote terminal, a first protocol data unit PDU session corresponding to a first S-NSSAI included in the second allowed NSSAI;

a second establishing unit, configured to establish a mapping relationship between the first PDU session and an identifier of a PC5 connection if a PC5 connection associated with a second S-NSSAI has been established between the remote terminal and the relay terminal; wherein the second S-NSSAI is mapped with the first S-NSSAI, and belongs to the first allowed NSSAI of the relay terminal.

As an alternative embodiment, the apparatus further comprises:

a request unit, configured to send a PC5 connection establishment request message to the relay terminal if a PC5 connection related to a second S-NSSAI is not established between the remote terminal and the relay terminal; the PC5 connection establishment request message carries the second S-NSSAI;

a successful receiving unit, configured to receive a PC5 connection success message sent by the relay terminal after establishing the PDU session related to the second S-NSSAI;

and a third establishing unit, configured to establish a mapping relationship between the first PDU session and an identifier of the PC5 connection.

As an alternative embodiment, the apparatus further comprises:

a request sending unit, configured to send a first registration request or a second registration request to a core network device of a remote terminal, where the first registration request carries a first allowed NSSAI of the relay terminal; the second registration request carries the identifier of the relay terminal;

the receiving unit includes:

and the receiving subunit is configured to receive a registration receiving message sent by the core network device of the remote terminal, where the registration receiving message carries the first information.

As an alternative embodiment, the apparatus further comprises:

a notification receiving unit, configured to receive second notification information sent by the relay terminal, where the second notification information is used to indicate that NSSAI of the relay terminal is allowed to be updated; or the second notification information includes the updated allowed NSSAI of the relay terminal;

the request transmitting unit includes:

and the request sending subunit is configured to send the first registration request or the second registration request to the core network device of the remote terminal according to the second notification information.

As an alternative embodiment, the apparatus further comprises:

an update receiving unit, configured to receive configuration update information sent by a core network device of a remote end terminal, where the configuration update information includes an updated allowed NSSAI of the remote end terminal.

As shown in fig. 13, the embodiment of the present invention further provides a terminal, which is a remote terminal, and includes a memory 1320, a transceiver 1310, a processor 1300, a user interface 1330;

a memory 1320 for storing computer programs; a transceiver 1310 for transceiving data under the control of the processor 1300; a processor 1300 for reading the computer program in the memory 1320 and performing the following operations:

and determining the request NSSAI of the remote terminal according to the first allowed network slice selection auxiliary information NSSAI of the relay terminal.

As an alternative embodiment, the processor 1300 is further configured to read the computer program in the memory and perform the following operations:

if the relay terminal and the remote terminal are located in the same public land mobile network PLMN, determining the NSSAI request of the remote terminal includes: a first allowed NSSAI of the relay terminal.

if the relay terminal and the remote terminal are located in different Public Land Mobile Networks (PLMNs), determining that the first allowed NSSAI is mapped to NSSAI in the PLMN selected by the remote terminal according to the first allowed NSSAI of the relay terminal and preset configuration parameters;

In the embodiment of the invention, the remote terminal considers the allowed NSSAI of the relay terminal when determining the request NSSAI of the remote terminal, so that the network slice allowed to be used by the remote terminal can be determined when the remote terminal is connected with the N3IWF through the relay terminal.

As shown in fig. 14, an apparatus for determining a network slice according to an embodiment of the present invention is applied to a remote terminal, and includes:

the determining unit 141 is configured to determine the request NSSAI of the remote terminal according to the first allowed network slice selection assistance information NSSAI of the relay terminal.

As an alternative embodiment, if the relay terminal and the remote terminal are located in the same public land mobile network PLMN, the determining unit includes:

a first determining subunit, configured to determine the request NSSAI of the remote terminal, includes: a first allowed NSSAI of the relay terminal.

As an optional embodiment, if the relay terminal and the remote terminal are located in different public land mobile networks PLMN, the determining unit includes:

a second determining subunit, configured to determine, according to the first allowed NSSAI of the relay terminal and a preset configuration parameter, that the first allowed NSSAI is mapped to an NSSAI in a PLMN selected by a remote terminal;

a third determining subunit, configured to determine the request NSSAI of the remote terminal, including: the first allowed NSSAI is mapped to part or all of NSSAI within a PLMN selected by the remote terminal.

It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the 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.

An embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is configured to enable the processor to execute the method described above. The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for determining network slice is applied to core network equipment of a remote terminal, and is characterized by comprising the following steps:

2. The method of claim 1, wherein the first information further comprises:

and/or the presence of a gas in the gas,

3. The method according to claim 1, wherein the obtaining the first allowed network slice selection assistance information NSSAI of the relay terminal comprises:

4. The method according to claim 1, wherein the obtaining the first allowed network slice selection assistance information NSSAI of the relay terminal comprises:

5. The method according to claim 3 or 4, wherein transmitting first information to the remote terminal comprises:

6. The method according to claim 1 or 2, characterized in that the method further comprises:

alternatively, the first and second electrodes may be,

7. The method according to claim 1 or 2, characterized in that the method further comprises:

8. A method for determining a network slice is applied to a remote terminal, and is characterized by comprising the following steps:

9. The method of claim 8, wherein the first information further comprises:

and/or the presence of a gas in the gas,

10. The method according to claim 8 or 9, characterized in that the method further comprises:

11. The method of claim 10, further comprising:

12. The method according to claim 8 or 9, wherein before the receiving the first information sent by the core network device of the remote terminal according to the first allowed network slice selection assistance information NSSAI of the relay terminal, the method further comprises:

13. The method of claim 12, further comprising:

14. The method according to claim 8 or 9, characterized in that the method further comprises:

15. A core network device of a remote terminal, comprising a memory, a transceiver, a processor: a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

16. The core network device of claim 15, wherein the first information further comprises:

and/or the presence of a gas in the gas,

17. The core network device of claim 15, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

18. The core network device of claim 15, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

19. Core network device according to claim 15 or 16, wherein the processor is further configured to read the computer program in the memory and to perform the following operations:

alternatively, the first and second electrodes may be,

20. A device for determining a network slice, applied to a core network device of a remote terminal, comprising:

21. A terminal, the terminal being a remote terminal comprising a memory, a transceiver, a processor:

22. The terminal of claim 21, wherein the first information further comprises:

and/or the presence of a gas in the gas,

23. A terminal according to claim 21 or 22, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

24. The terminal of claim 23, wherein the processor is further configured to read the computer program in the memory and perform the following operations:

25. An apparatus for determining a network slice, applied to a remote terminal, comprising:

26. A processor-readable storage medium, wherein the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 7; alternatively, the computer program is for causing the processor to perform the method of any of claims 8 to 14.