CN111770558A

CN111770558A - Slice access method, terminal and network equipment

Info

Publication number: CN111770558A
Application number: CN201910261460.2A
Authority: CN
Inventors: 刘超; 孙滔
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: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-10-13

Abstract

The invention provides a slice access method, a terminal and network equipment, wherein the method comprises the following steps: sending a registration request message, wherein the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information and does not carry visiting location slice information; receiving a registration accept message, which is sent by the access and mobility management function AMF after receiving the registration request message. The S-NSSAI sent by the terminal to the network equipment only contains the home location slice information but not the visit location slice information, so that the scenario that the slice information of the HPLMN is sent to the AMF but not the corresponding slice information of the VPLMN is supported.

Description

Slice access method, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a slice access method, a terminal, and a network device.

Background

In mobile communication systems, the demands on the network are different for different types of application scenarios. The network slicing technology provides mutually isolated network environments for different application scenes in a mode of simulating an independent logic network on the same network infrastructure, so that different application scenes can customize network functions and characteristics according to respective requirements, and requirements of different services are met. The terminal may access one or more network slices, and the terminal provides Network Slice Selection Assistance Information (NSSAI) to access an appropriate network slice. Wherein, the NSSAI is composed of a series of Single Network Slice Selection assistance information (S-NSSAI), and the S-NSSAI is used for identifying the Network Slice. The S-NSSAI includes a Slice Service Type (SST) field and a Slice Differentiator (SD) field, as shown in fig. 1, where the SST field occupies 8bits, i.e., 1 byte, and the SD field occupies 24bits, i.e., 3 bytes.

As shown in fig. 2, the data format of the S-NSSAI includes 10 bytes, wherein the first byte (octet1) is an Information Element Indication (IEI) field of the S-NSSAI, the second byte (octet2) is an S-NSSAI content Length (Length of S-NSSAI contents) field, the third byte (octet3) is an SST field, the fourth to six bytes (octets 4-octet 6) are SD fields, the seventh byte (octet7) is a Mapped Home Public Land Mobile Network (Home Public Land Mobile Network, HPLMN) SST (Mapped hplmnsst) field, and the eighth to tenth bytes (octets 8-octet 10) are Mapped HPLMN (Mapped HPLMN) SD fields. The first to third bytes are necessary and the fourth to tenth bytes are optional (as indicated by the prime symbol in fig. 2).

Wherein, the different value of the second byte is used to indicate the field carried in the S-NSSAI data structure, i.e. the different value of the byte is used to indicate the different S-NSSAI content. Currently, the value of the second byte can only be 1, 2, 4, 5 and 8, wherein the value meaning of the second byte is shown in table 1:

TABLE 1

The third to sixth bytes represent the S-NSSAI of a Visited Public Land Mobile Network (VPLMN), and there are two cases:

1. a non-international roaming scenario, wherein the third to sixth bytes represent the S-NSSAI of a Public Land Mobile Network (PLMN) where the user is located;

2. in the international roaming scenario, the third to sixth bytes represent mapping of the S-NSSAI of the user home location to the S-NSSAI after the visited location. The seventh to tenth bytes represent the home S-NSSAI before mapping.

According to the existing mode, when the terminal sends the S-NSSAI of the HPLMN to an access and mobility management Function (AMF), but there is no S-NSSAI with a corresponding VPLMN, the terminal cannot implement, that is, the existing mode does not support such a scenario.

Disclosure of Invention

The invention provides a slice access method, a terminal and network equipment, which solve the problem that the prior art cannot support a specific scene.

The embodiment of the invention provides a slice access method, which is applied to a terminal and comprises the following steps:

sending a registration request message, wherein the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information and does not carry visiting location slice information;

receiving a registration accept message, which is sent by the access and mobility management function AMF after receiving the registration request message.

Another embodiment of the present invention provides a terminal, including: a processor; a memory coupled to the processor, and a transceiver coupled to the processor; wherein the processor is configured to invoke and execute programs and data stored in the memory, and the transceiver is configured to:

Another embodiment of the present invention provides a terminal, including:

the system comprises a first sending module, a second sending module and a third sending module, wherein the first sending module is used for sending a registration request message, the registration request message carries single-network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information and does not carry visiting location slice information;

a first receiving module, configured to receive a registration accept message, where the registration accept message is sent by the access and mobility management function AMF after receiving the registration request message.

Another embodiment of the present invention provides a slice access method, which is applied to an access and mobility management function AMF, and includes:

receiving a registration request message, wherein the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information but does not carry visited location slice information;

after receiving the registration request message, a registration accept message is sent.

Another embodiment of the present invention provides a network device, where the network device is an access and mobility management function AMF, and the network device includes: a processor; a memory coupled to the processor, and a transceiver coupled to the processor; wherein the processor is configured to invoke and execute programs and data stored in the memory, and the transceiver is configured to:

Another embodiment of the present invention provides a network device, where the network device is an access and mobility management function AMF, and the network device includes:

the second receiving module is used for receiving a registration request message, wherein the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information but does not carry visiting location slice information;

and the second sending module is used for sending the registration acceptance message after receiving the registration request message.

Another embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the slice access method described above.

The technical scheme of the invention has the beneficial effects that: the S-NSSAI sent by the terminal to the network equipment only contains the home slice information and does not contain the visited slice information, so that the scenario that the slice information of the HPLMN is sent to the AMF but not the corresponding slice information of the VPLMN is supported.

Drawings

FIG. 1 shows a data structure diagram of SST and SD;

FIG. 2 shows a data structure diagram of S-NSSAI

Fig. 3 is a flowchart illustrating a slice access method at a terminal side according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating a slice access method according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating an S-NSSAI data structure according to a first embodiment of the present invention;

FIG. 6 is a diagram illustrating a S-NSSAI data structure according to a second embodiment of the present invention;

FIG. 7 is a diagram illustrating a data structure of S-NSSAI in a third embodiment of the present invention;

fig. 8 is a schematic block diagram of a terminal according to an embodiment of the present invention;

FIG. 9 shows a block diagram of a terminal of an embodiment of the invention;

fig. 10 is a flowchart illustrating a slice access method on a network device side according to an embodiment of the present invention;

FIG. 11 is a block diagram of a network device according to an embodiment of the present invention;

fig. 12 is a block diagram of a network device 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. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In addition, the terms "system" and "network" are often used interchangeably herein.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

As shown in fig. 3, an embodiment of the present invention provides a slice access method, which specifically includes the following steps:

step 31: and sending a registration request message, wherein the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information and does not carry visiting location slice information.

After triggering Registration (Registration is triggered), the terminal sends slice information to the AMF through a Registration request (Registration request) message. The registration request message carries an S-NSSAI for indicating slice information, where the S-NSSAI may carry different slice information for different application scenarios. For example, when only the visiting place slice information needs to be sent, only the visiting place slice information can be carried in the S-NSSAI; when the attribution place slice information and the visiting place slice information need to be sent, the attribution place slice information and the visiting place slice information are carried in the S-NSSAI; when only the home slice information needs to be transmitted, only the home slice information, and not the visited slice information, may be carried in the S-NSSAI.

Step 32: receiving a registration accept message, which is sent by the access and mobility management function AMF after receiving the registration request message.

After receiving the Registration request message, the AMF performs a related operation according to the Registration request message, and returns a Registration Accept (Registration Accept) message, or referred to as a Registration response message, to complete the Registration process.

The attribution slice information in the embodiment of the invention comprises the following steps: a slicing service type SST of a home public land mobile network HPLMN and/or a slicing differentiator SD of the HPLMN.

The home slice information includes: a slicing service type SST of the mapped home public land mobile network HPLMN and/or a slicing differentiator SD of the mapped HPLMN.

The visiting place slice information includes: a slicing service type SST of the visited public land mobile network VPLMN and/or a slicing differentiator SD of the VPLMN.

In some embodiments, the terminal registration procedure may include the following steps as shown in fig. 4:

step 41: the terminal transmits a registration request message to a Next Generation Radio Access Network (NG-RAN).

Step 42: the NG-RAN performs AMF selection.

Step 43: and after selecting the AMF, the NG-RAN sends a registration request message to the selected AMF so that the AMF carries out an interactive process at the core network side.

Step 44: and after the AMF completes the interactive process with other network elements at the core network side, the AMF sends a registration acceptance message to the terminal.

Further, in the embodiment of the present invention, the terminal implements sending only home slice information to the AMF by a manner of carrying the home slice information in the S-NSSAI without carrying the visited slice information, and the implementation manner includes, but is not limited to, the following manners:

in a first mode, the S-NSSAI comprises: a first SST field, a first SD field, a second SST field, and a second SD field; wherein the first SST field and the first SD field are related to visited place slice information and are filled with reserved values; the second SST field and the second SD field are related to home slice information.

Wherein, a first SST field in the data format of the S-NSSAI of the mode is filled with a reserved value, and the first SST field of the SST of the visited public land mobile network VPLMN is invalid; the first SD field is filled with a reserved value, and the first SD field of the SD of the visited public land mobile network VPLMN is failed. The first SST comprises 8bits and has a value range of 0-255, wherein the first SST belongs to a standard SST range when being filled with 0-127 bits, the first SST belongs to an operator self-defined range when being filled with 128-254 bits, and the first SST belongs to a reserved value when being filled with 255(0 xFF). The first SD comprises 24bits, and the value range is 0 to (2)²⁴-1) when the first SD is filled 2²⁴And-1 (0xFFFFFF) belongs to the reserved value. For example, the terminal in the single registration mode with the N26 interface is from an Evolved Packet System (EPS) to a fifth generation communication System (5)^thGeneration system, 5GS), when the terminal has only home slice information and no visited slice information, the terminal may carry S-NSSAI in the registration request message, wherein, as shown in fig. 5, the data structure of the S-NSSAI includes: comprises 10 bytes, wherein the first byte is an information element indication IEI field of S-NSSAI, the second byte is an S-NSSAI content length field, the third byte is a first SST field, the fourth to six bytes are a first SD field, the seventh byte is a second SST field, and the eighth to tenth bytes areA second SD field. Wherein the first SST field is used for representing SST of VPLMN, the first SD is used for representing SD of VPLMN, and the first SST field and the first SD field are both filled with reserved values (0xFF, 0 xFFFFFF). The second SST field is used to indicate an SST of the HPLMN or an SST of the mapped HPLMN, and the second SD field is used to indicate an SD of the HPLMN or an SD of the mapped HPLMN.

In addition to the first way one, when the first SST field and the first SD field are filled with valid values (unreserved values), the SST and SD of the VPLMN can be represented.

In this manner, it is assumed that the value of the second byte may be 1, 2, 4, 5, and 8, where the value meaning of the second byte is shown in table 2:

TABLE 2

Mode two, S-NSSAI includes: a first SST field, a second SST field, and a second SD field; wherein the first SST field is filled with a reserved value, and the second SST field and the second SD field are related to home slice information.

Wherein, in the data format of the S-NSSAI, a first SST field in the mode is filled with a reserved value, which indicates that the first SST field of the SST of the visited public land mobile network VPLMN is invalid; the second SD field is included in the S-NSSAI when a SD of VPLM needs to be sent. The first SST comprises 8bits and has a value range of 0-255, wherein the first SST belongs to a standard SST range when being filled with 0-127 bits, the first SST belongs to an operator self-defined range when being filled with 128-254 bits, and the first SST belongs to a reserved value when being filled with 255(0 xFF). For example, when the terminal moves from EPS to 5GS in single registration mode with N26 interface, when the terminal only has home slice information and does not have visited slice information, the terminal may carry S-NSSAI in the registration request message, where, as shown in fig. 6, the data structure of S-NSSAI includes: the information element comprises 7 bytes, wherein the first byte is an S-NSSAI information element indication IEI field, the second byte is an S-NSSAI content length field, the third byte is a first SST field, the fourth byte is a second SD field, and the fifth to seven bytes are second SST fields. Wherein the first SST field is used to represent an SST of the VPLMN, and the first SST field is populated with a reserved value of 0 xFF. The second SST field is used to indicate an SST of the HPLMN or an SST of the mapped HPLMN, and the second SD field is used to indicate an SD of the HPLMN or an SD of the mapped HPLMN.

In addition to the second way, when the SST and the SD of the VPLMN need to be sent, the S-NSSAI includes a first SST field and a first SD field, and the first SST field and the first SD field are both filled with valid values (unreserved values) to represent the SST and the SD of the VPLMN.

In this manner, it is assumed that the value of the second byte may be 1, 2, 4, 5, and 8, where the value meaning of the second byte is shown in table 3:

TABLE 3

In a third mode, the registration request message also carries indication information, and the S-NSSAI includes: an SST field and an SD field; in case the indication information is a first value, the SST field and the SD field are related to home slice information.

The registration request message in this manner also carries dedicated indication information, the values of the indication information are different, and the meanings of the data formats of the corresponding S-NSSAIs are different. For example, the indication information fills a specific value (first value), and in case of a valid value, a default value, the S-NSSAI includes only one set of SST field for indicating SST of the HPLMN or SST of the mapped HPLMN and SD field for indicating SD of the HPLMN or SD of the mapped HPLMN. For example, when the terminal moves from EPS to 5GS in the single registration mode with N26 interface, when the terminal only has home slice information and does not have visited slice information, the terminal may carry S-NSSAI in the registration request message, where, as shown in fig. 7, the data structure of the S-NSSAI includes: including 6 bytes, wherein the first byte is an information element indication IEI field of S-NSSAI, the second byte is a content length field of S-NSSAI, the third byte is an SST field, and the fourth to six bytes are SD fields. Wherein the SST field is used to indicate SST of the HPLMN or SST of the mapped HPLMN, and the SD field is used to indicate SD of the HPLMN or SD of the mapped HPLMN.

In addition to the third mode, in the case where the indication information is the second value, the SST field and the SD field are related to the visiting place slice information. For example, the indication information is not filled with a specific value (a second value, a value different from the first value), such as an invalid value, a non-default value, the S-NSSAI only includes a set of SST field for indicating SST of the VPLMN and SD field for indicating SD of the VPLMN.

Assuming that the indication information comprises 1bit, when the value of the indication information is 0, the SST field in the S-NSSAI is used for indicating the SST of the HPLMN or the SST of the mapped HPLMN, and the SD field is used for indicating the SD of the HPLMN or the SD of the mapped HPLMN; when the value of the indication information is 1, the SST field in the S-NSSAI is used for representing the SST of the VPLMN, and the SD field is used for representing the SD of the VPLMN. Or vice versa.

Or, in case the presence indication information is detected, the SST field in the S-NSSAI is used to indicate SST of the HPLMN or SST of the mapped HPLMN, and the SD field is used to indicate SD of the HPLMN or SD of the mapped HPLMN; otherwise, the SST field in the S-NSSAI is used for representing the SST of the VPLMN, and the SD field is used for representing the SD of the VPLMN.

In this manner, it is assumed that the value of the second byte may be 1, 2, 4, 5, and 8, where the value meaning of the second byte is shown in table 4:

TABLE 4

In the slice access method of the embodiment of the invention, the S-NSSAI sent by the terminal to the network equipment only contains the home slice information but not the visited slice information, so that the scenario that the slice information of the HPLMN is sent to the AMF but not the corresponding slice information of the VPLMN is supported.

The above embodiments are respectively introduced to the slice access method of the present invention, and the following embodiments will further describe the corresponding terminal with reference to the drawings.

Specifically, as shown in fig. 8, the terminal 800 of the embodiment of the present invention includes the following functional modules:

a first sending module 810, configured to send a registration request message, where the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home slice information and does not carry visited slice information;

a first receiving module 820, configured to receive a registration accept message, where the registration accept message is sent by the access and mobility management function AMF after receiving the registration request message.

Optionally, the S-NSSAI comprises: a first SST field, a first SD field, a second SST field, and a second SD field;

wherein the first SST field and the first SD field are related to visited place slice information and are filled with reserved values;

the second SST field and the second SD field are related to home slice information.

Optionally, the S-NSSAI comprises: a first SST field, a second SST field, and a second SD field; wherein the first SST field is filled with a reserved value, and the second SST field and the second SD field are related to home slice information.

Optionally, the registration request message further carries indication information, and the S-NSSAI includes: an SST field and an SD field;

in case the indication information is a first value, the SST field and the SD field are related to home slice information.

Optionally, in case that the indication information is a second value, the SST field and the SD field are related to the visitor slice information.

Optionally, the home slice information includes: a slicing service type SST of a home public land mobile network HPLMN and/or a slicing differentiator SD of the HPLMN.

Optionally, the home slice information includes: a slicing service type SST of the mapped home public land mobile network HPLMN and/or a slicing differentiator SD of the mapped HPLMN.

Optionally, the visited place slice information includes: a slicing service type SST of the visited public land mobile network VPLMN and/or a slicing differentiator SD of the VPLMN.

The terminal embodiment of the invention is corresponding to the embodiment of the method, all implementation means in the method embodiment are applicable to the embodiment of the terminal, and the same technical effect can be achieved. The S-NSSAI sent by the terminal to the network equipment only contains the home slice information and does not contain the visited slice information, so that the scenario that the slice information of the HPLMN is sent to the AMF and the corresponding slice information of the VPLMN is not sent can be supported.

As shown in fig. 9, the present embodiment provides a terminal including:

a processor 91; and a memory 93 connected to the processor 91 through a bus interface 92, wherein the memory 93 is used for storing programs and data used by the processor 91 in executing operations, and when the processor 91 calls and executes the programs and data stored in the memory 93, the following processes are performed.

Among other things, the transceiver 94 is connected to the bus interface 92 for receiving and transmitting data under the control of the processor 91, in particular for: sending a registration request message, wherein the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information and does not carry visiting location slice information;

It should be noted that in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 91 and various circuits of memory represented by memory 93 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 94 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. For different terminals, the user interface 95 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 91 is responsible for managing the bus architecture and general processing, and the memory 93 may store data used by the processor 91 in performing operations.

Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.

The slice access method according to the embodiment of the present invention is introduced from the terminal side, and the slice access method at the network device side will be further described with reference to the drawings.

As shown in fig. 10, an embodiment of the present invention provides a slice access method applied to AMF, where the method may include the following steps:

step 101: and receiving a registration request message, wherein the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information but does not carry visited location slice information.

And after triggering registration, the terminal sends the slice information to the AMF through the registration request message. The registration request message carries an S-NSSAI for indicating slice information, where the S-NSSAI may carry different slice information for different application scenarios. For example, when only the visiting place slice information needs to be sent, only the visiting place slice information can be carried in the S-NSSAI; when the attribution place slice information and the visiting place slice information need to be sent, the attribution place slice information and the visiting place slice information are carried in the S-NSSAI; when only the home slice information needs to be transmitted, only the home slice information, and not the visited slice information, may be carried in the S-NSSAI.

Step 102: after receiving the registration request message, a registration accept message is sent.

After receiving the registration request message, the AMF performs a related operation according to the registration request message, and returns a registration acceptance message, or a registration response message, to complete the registration process.

Similar to the terminal-side embodiment, the network device-side embodiment of the present invention includes: a slicing service type SST of a home public land mobile network HPLMN and/or a slicing differentiator SD of the HPLMN.

Wherein, a first SST field in the data format of the S-NSSAI of the mode is filled with a reserved value, and the first SST field of the SST of the visited public land mobile network VPLMN is invalid; the first SD field is filled with a reserved value, and the first SD field of the SD of the visited public land mobile network VPLMN is failed. The first SST comprises 8bits and has a value range of 0-255, wherein the first SST belongs to a standard SST range when being filled with 0-127 bits, the first SST belongs to an operator self-defined range when being filled with 128-254 bits, and the first SST belongs to a reserved value when being filled with 255(0 xFF). The first SD comprises 24bits, and the value range is 0 to (2)²⁴-1) when the first SD is filled 2²⁴And-1 (0xFFFFFF) belongs to the reserved value. Mode two, S-NSSAI includes: a first SST field, a second SST field, and a second SD field; wherein the first SST field is filled with a reserved value, and the second SST field and the second SD field are related to home slice information. Wherein, in the data format of the S-NSSAI, a first SST field in the mode is filled with a reserved value, which indicates that the first SST field of the SST of the visited public land mobile network VPLMN is invalid; the second SD field is included in the S-NSSAI when a SD of VPLM needs to be sent. The first SST comprises 8bits and has a value range of 0-255, wherein the first SST is filled in a range of 0-127 times and belongs to a standard SST range, and the first SST is filled in a range of 128-254 timesThe operator defines the range, the first SST padding 255(0xFF) belongs to the reserved value.

The registration request message in this manner also carries dedicated indication information, the values of the indication information are different, and the meanings of the data formats of the corresponding S-NSSAIs are different. For example, the indication information fills a specific value (first value), and in case of a valid value, a default value, the S-NSSAI includes only one set of SST field for indicating SST of the HPLMN or SST of the mapped HPLMN and SD field for indicating SD of the HPLMN or SD of the mapped HPLMN.

It should be noted that the first, second, and third modes in the network device side embodiment correspond to the first, second, and third modes in the terminal side embodiment, respectively, and all the implementation modes of the terminal side embodiment are applicable to the network device side embodiment, so that no further description is provided herein.

In the slice access method of the embodiment of the invention, the network equipment can receive the S-NSSAI only containing the home slice information but not containing the visit slice information from the terminal, so that the scenario that the slice information of the HPLMN is sent to the AMF but not the corresponding slice information of the VPLMN is supported.

The above embodiments are respectively described with respect to the slice access method of the present invention, and the following embodiments will further describe the corresponding network device with reference to the accompanying drawings.

Specifically, as shown in fig. 11, the network device 1100 according to the embodiment of the present invention includes the following functional modules:

a second receiving module 1110, configured to receive a registration request message, where the registration request message carries single-network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home slice information and does not carry visited slice information;

a second sending module 1120, configured to send a registration acceptance message after receiving the registration request message.

The embodiment of the network equipment of the invention is corresponding to the embodiment of the method, all the implementation means in the embodiment of the method are suitable for the embodiment of the network equipment, and the same technical effect can be achieved. The network device can receive the S-NSSAI only containing the home slice information and not containing the visit slice information from the terminal, so that a scene that the slice information of the HPLMN is sent to the AMF and the corresponding slice information of the VPLMN is not sent can be supported.

To better achieve the above object, as shown in fig. 12, an embodiment of the present invention further provides a network device, including: a processor 1200; a memory 1220 connected to the processor 1200 through a bus interface, and a transceiver 1210 connected to the processor 1200 through a bus interface; the memory 1220 is used for storing programs and data used by the processor in performing operations; transmitting data information or pilot frequency through the transceiver 1210, and also receiving an uplink control channel through the transceiver 1210; when the processor 1200 calls and executes the programs and data stored in the memory 1220, the following functions are implemented:

the processor 1200 is used to read programs in the memory 1220.

A transceiver 1210 for receiving and transmitting data under control of the processor 1200, in particular for:

Where in fig. 12, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors represented by processor 1200 and memory represented by memory 1220 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 1210 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 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 in performing operations.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the slice access method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.

Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.

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 slice access method is applied to a terminal, and is characterized by comprising the following steps:

2. The slice access method of claim 1, wherein the S-NSSAI comprises: a first SST field, a first SD field, a second SST field, and a second SD field;

wherein the first SST field and the first SD field are related to the visitor slice information and are populated with reserved values;

the second SST field and the second SD field are related to the home slice information.

3. The slice access method of claim 1, wherein the S-NSSAI comprises: a first SST field, a second SST field, and a second SD field; wherein the first SST field is filled with a reserved value, and the second SST field and the second SD field are related to the home slice information.

4. The slice access method according to claim 1, wherein the registration request message further carries indication information, and the S-NSSAI includes: an SST field and an SD field;

the SST field and the SD field are related to the home slice information in case the indication information is a first value.

5. The slice access method of claim 4, wherein the SST field and the SD field are related to the visiting place slice information in case the indication information is a second value.

6. The slice access method of any of claims 1 to 5, wherein the home slice information comprises: a slicing service type SST of a home public land mobile network HPLMN and/or a slicing differentiator SD of the HPLMN.

7. The slice access method of any of claims 1 to 5, wherein the home slice information comprises: a slicing service type SST of the mapped home public land mobile network HPLMN and/or a slicing differentiator SD of the mapped HPLMN.

8. The slice access method of any of claims 1 to 5, wherein the visited slice information comprises: a slicing service type SST of the visited public land mobile network VPLMN and/or a slicing differentiator SD of the VPLMN.

9. A terminal, comprising: a processor; a memory coupled to the processor, and a transceiver coupled to the processor; wherein the processor is configured to invoke and execute programs and data stored in the memory, and the transceiver is configured to:

10. The terminal of claim 9, wherein the S-NSSAI comprises: a first SST field, a first SD field, a second SST field, and a second SD field;

11. The terminal of claim 9, wherein the S-NSSAI comprises: a first SST field, a second SST field, and a second SD field; wherein the first SST field is filled with a reserved value, and the second SST field and the second SD field are related to the home slice information.

12. The terminal of claim 9, wherein the registration request message further carries indication information, and wherein the S-NSSAI comprises: an SST field and an SD field;

13. The terminal of claim 12, wherein the SST field and the SD field are related to the visitor slice information if the indication information is a second value.

14. A terminal, comprising:

the system comprises a first sending module, a second sending module and a third sending module, wherein the first sending module is used for sending a registration request message, the registration request message carries single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home location slice information and does not carry visiting location slice information;

a first receiving module, configured to receive a registration accept message, where the registration accept message is sent by an access and mobility management function AMF after receiving the registration request message.

15. A slice access method is applied to access and a mobility management function (AMF), and is characterized by comprising the following steps:

16. The slice access method of claim 15, wherein the S-NSSAI comprises: a first SST field, a first SD field, a second SST field, and a second SD field;

17. The slice access method of claim 15, wherein the S-NSSAI comprises: a first SST field, a second SST field, and a second SD field; wherein the SST field is filled with a reserved value, and the second SST field and the second SD field are related to the home slice information.

18. The slice access method of claim 15, wherein the registration request message further carries indication information, and wherein the S-NSSAI comprises: an SST field and an SD field;

19. The slice access method of claim 18, wherein the SST field and the SD field are related to the visiting place slice information if the indication information is a second value.

20. The slice access method of any of claims 15 to 19, wherein the home slice information comprises: a slicing service type SST of a home public land mobile network HPLMN and/or a slicing differentiator SD of the HPLMN.

21. The slice access method of any of claims 15 to 19, wherein the home slice information comprises: a slicing service type SST of the mapped home public land mobile network HPLMN and/or a slicing differentiator SD of the mapped HPLMN.

22. The slice access method of any of claims 15 to 19, wherein the visited slice information comprises: a slicing service type SST of the visited public land mobile network VPLMN and/or a slicing differentiator SD of the VPLMN.

23. A network device, being an access and mobility management function, AMF, comprising: a processor; a memory coupled to the processor, and a transceiver coupled to the processor; wherein the processor is configured to invoke and execute programs and data stored in the memory, and the transceiver is configured to:

24. The network device of claim 23, wherein the S-NSSAI comprises: a first SST field, a first SD field, a second SST field, and a second SD field;

25. The network device of claim 23, wherein the S-NSSAI comprises: a first SST field, a second SST field, and a second SD field; wherein the SST field is filled with a reserved value, and the second SST field and the second SD field are related to the home slice information.

26. The network device of claim 23, wherein the registration request message further carries indication information, and wherein the S-NSSAI comprises: an SST field and an SD field;

27. The network device of claim 26, wherein the SST field and the SD field are related to the visitor slice information if the indication information is a second value.

28. A network device, being an access and mobility management function, AMF, comprising:

a second receiving module, configured to receive a registration request message, where the registration request message carries single-network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries home slice information and does not carry visited slice information;

and the second sending module is used for sending a registration acceptance message after receiving the registration request message.

29. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, realizes the steps of the slice access method according to any one of claims 1 to 8, 15 to 22.