CN111770558A - A slice access method, terminal and network device - Google Patents

Abstract

The present invention provides a slice access method, terminal and network equipment, the method includes: sending a registration request message, the registration request message carries single network slice selection auxiliary information S-NSSAI, and S-NSSAI carries home slice information , and does not carry the slicing information of the visited site; a registration accept message is received, and the registration accept message is sent by the access and mobility management function AMF after receiving the registration request message. The S-NSSAI sent by the terminal of the present invention to the network device only contains the home slicing information but not the visited slicing information, so that the slice information of the HPLMN can be sent to the AMF without sending the slice information of the corresponding VPLMN. scene.

Description

A slice access method, terminal and network device

technical field

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

Background technique

In a mobile communication system, different types of application scenarios have different network requirements. Network slicing technology provides isolated network environments for different application scenarios by virtualizing independent logical networks on the same network infrastructure, so that different application scenarios can customize network functions and features according to their own needs, thus ensuring the needs of different services. . A terminal may access one or more network slices, and the terminal provides network slice selection assistance information (Network Slice Selection Assistance Information, NSSAI) to access a suitable network slice. The NSSAI is composed of a series of single network slice selection assistance information (Single Network Slice Selection Assistance Information, S-NSSAI), and the S-NSSAI is used to identify the network slice. Among them, S-NSSAI includes a slice service type (Slice/Service Type, SST) field and a slice differentiator (Slice Differentiator, SD) field. As shown in Figure 1, the SST field occupies 8 bits, that is, 1 byte. The SD field occupies 24 bits, that is, 3 bytes.

As shown in Figure 2, the data format of S-NSSAI includes 10 bytes, wherein the first byte (octet1) is the information element indication (Information Element Indication, IEI) field of S-NSSAI, and the second byte (octet2) is the Length of S-NSSAI contents field, the third byte (octet3) is the SST field, the fourth to sixth bytes (octet4~octet6) are the SD field, and the seventh byte is the SD field. The byte (octet7) is the mapped Home Public Land Mobile Network (HPLMN) SST (Mapped HPLMNSST) field, and the eighth to tenth bytes (octet8-octet10) are the mapped HPLMN SD (Mapped HPLMN ST) field. HPLMN SD) field. Among them, the first to third bytes are mandatory, and the fourth to tenth bytes are optional (as shown by the mark * in Figure 2).

Wherein, different values of the second byte are used to indicate fields carried in the S-NSSAI data structure, that is, different values of this byte are used to indicate different S-NSSAI contents. At present, the value of the second byte can only be 1, 2, 4, 5 and 8. The meaning of the value of the second byte is shown in Table 1:

Table 1

The third to sixth bytes represent the S-NSSAI of the Visited Public Land Mobile Network (VPLMN), in the following two cases:

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

2. In the international roaming scenario, the third to sixth bytes indicate that the S-NSSAI of the user's home place is mapped to the S-NSSAI of the visited place. The seventh to tenth bytes represent the home S-NSSAI before mapping.

According to the existing method, when the terminal sends the S-NSSAI of the HPLMN to the access and mobility management function (Access management Function, AMF) without the S-NSSAI with the corresponding VPLMN, the terminal cannot realize it, that is, the existing method does not support this scenario.

SUMMARY OF THE INVENTION

The present invention provides a slice access method, a terminal and a network device, which solve the problem that a specific scenario cannot be supported in the prior art.

An embodiment of the present invention provides a slice access method, applied to a terminal, including:

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

A registration accept message is received, 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 connected to the processor, and a transceiver connected to the processor; wherein the processor is used to call and execute a program stored in the memory and data, transceivers are used to:

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

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

The first receiving module is configured to receive a registration acceptance message, where the registration acceptance 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 the access and mobility management function AMF, including:

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

After the registration request message is received, a registration accept message is sent.

Another embodiment of the present invention provides a network device, which is an access and mobility management function AMF, including: a processor; a memory connected to the processor, and a transceiver connected to the processor; wherein , the processor is used to call and execute the programs and data stored in the memory, and the transceiver is used to:

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

After the registration request message is received, a registration accept message is sent.

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

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

The second sending module is configured to send a registration acceptance message after receiving the registration request message.

Another embodiment of the present invention 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 steps of the foregoing slice access method are implemented.

The beneficial effects of the above technical solutions of the present invention are: the S-NSSAI sent by the terminal to the network device only contains the home slicing information but not the visited slicing information, so that the slicing information of the HPLMN can be sent to the AMF, and Scenarios where slice information of the corresponding VPLMN is not sent.

Description of drawings

Fig. 1 shows the data structure schematic diagram of SST and SD;

Figure 2 shows a schematic diagram of the data structure of S-NSSAI

FIG. 3 is a schematic flowchart of a method for accessing slices on a terminal side according to an embodiment of the present invention;

FIG. 4 shows a schematic flowchart of a slice access method according to an embodiment of the present invention;

5 shows a schematic diagram of the S-NSSAI data structure of Mode 1 in an embodiment of the present invention;

6 shows a schematic diagram of the S-NSSAI data structure of Mode 2 in an embodiment of the present invention;

7 shows a schematic diagram of the S-NSSAI data structure of Mode 3 in an embodiment of the present invention;

FIG. 8 is a schematic diagram of a module structure of a terminal according to an embodiment of the present invention;

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

FIG. 10 shows a schematic flowchart of a slice access method on the network device side according to an embodiment of the present invention;

11 is a schematic diagram of a module structure of a network device according to an embodiment of the present invention;

FIG. 12 shows a block diagram of a network device according to an embodiment of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to assist in a comprehensive understanding of embodiments of the present invention. Accordingly, it should be apparent to those skilled in the art that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It is to be understood that reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic associated with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily necessarily 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 size of the sequence numbers of the following processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, rather than the implementation of the present invention The implementation of the examples constitutes no limitation.

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

In the embodiments provided in this application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean that B is only determined according to A, and B may also be determined according to 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: Send a registration request message. The registration request message carries the single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries the home slice information and does not carry the visited slice information.

After triggering registration (Registration is triggered), the terminal sends slice information to the AMF through a registration request (RegistrationRequest) message. The registration request message carries S-NSSAI for indicating slice information, wherein the S-NSSAI may carry different slice information for different application scenarios. For example, when only the slice information of the visited place needs to be sent, the S-NSSAI can carry only the slice information of the visited place; when it is necessary to send the information of the home place slice and the slice information of the visited place, the S-NSSAI can carry the information of the home place slice and the slice information of the visited place. information; when only the home slicing information needs to be sent, the S-NSSAI may only carry the home slicing information, but not the visited slicing information.

Step 32: Receive 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 related operations according to the registration request message, and returns a registration accept (Registration Accept) message, or a registration response message, to complete the registration process.

Wherein, the home slice information in the embodiment of the present invention includes: the slice service type SST of the home public land mobile network HPLMN and/or the slice differentiator SD of the HPLMN.

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

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

In some embodiments, the terminal registration process may include the following steps as shown in Figure 4:

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

Step 42: NG-RAN performs AMF selection.

Step 43: After selecting the AMF, the NG-RAN sends a registration request message to the selected AMF, so that the AMF performs the interaction process on the core network side.

Step 44: After the AMF completes the interaction process with other network elements on the core network side, the AMF sends a registration acceptance message to the terminal.

Further, in this embodiment of the present invention, the terminal carries the home slicing information in the S-NSSAI, but does not carry the visited slicing information, so as to send only the home slicing information to the AMF. The implementation methods include but are not limited to The following way:

Mode 1: S-NSSAI includes: 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 visited site slice information, and are filled with reserved Value; the second SST field and the second SD field are related to the home slice information.

Wherein, the first SST field in the data format of the S-NSSAI of this mode is filled with a reserved value, indicating that the first SST field of the SST of the VPLMN of the visited public land mobile network is invalid; the first SD field is filled with a reserved value, indicating that the visited public land mobile network VPLMN is invalid. The first SD field of the SD of the land mobile network VPLMN is invalid. The first SST includes 8 bits, and the value range is 0 to 255. The first SST is filled with 0 to 127 and belongs to the standard SST range. When the first SST is filled with 128 to 254, it belongs to the operator-defined range. The first SST is filled with 255 (0xFF) is a reserved value. The first SD includes 24 bits, and the value ranges from 0 to (2 ²⁴ -1). When the first SD is filled with 2 ²⁴ -1 (0xFFFFFF), it is a reserved value. For example, when the terminal moves from the Evolved Packet System (EPS) to the 5th Generation System ( ^5GS ) in the single-registration mode with the N26 interface, when the terminal only has the home slice information, but does not have visited When slicing information, the terminal can carry the S-NSSAI in the registration request message, wherein, as shown in FIG. 5, the data structure of the S-NSSAI includes: including 10 bytes, wherein the first byte is S-NSSAI The information element of NSSAI indicates the IEI field, the second byte is the S-NSSAI content length field, the third byte is the first SST field, the fourth to sixth bytes are the first SD field, and the seventh byte is the second SST field, and the eighth to tenth bytes are the second SD field. The first SST field is used to represent the SST of the VPLMN, the first SD is used to represent the SD of the VPLMN, and both the first SST field and the first SD field are filled with reserved values (0xFF, 0xFFFFFF). The second SST field is used to represent the SST of the HPLMN or the SST of the mapped HPLMN, and the second SD field is used to represent the SD of the HPLMN or the SD of the mapped HPLMN.

As a supplement to the first mode, when the first SST field and the first SD field are filled with valid values (non-reserved values), the SST and SD of the VPLMN can be represented.

In this mode, it is assumed that the value of the second byte can be 1, 2, 4, 5, and 8, and the meaning of the value of the second byte is shown in Table 2:

Table 2

Manner 2, the 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, the first SST field in the data format of S-NSSAI in this method is filled with a reserved value, indicating that the first SST field of the SST of the visited public land mobile network VPLMN is invalid; when the SD of the VPLM needs to be sent, the S-NSSAI only Include the second SD field. The first SST includes 8 bits, and the value range is 0 to 255. The first SST is filled with 0 to 127 and belongs to the standard SST range. When the first SST is filled with 128 to 254, it belongs to the operator-defined range. The first SST is filled with 255 (0xFF) is a reserved value. 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 but no visited slice information, the terminal can carry S-NSSAI in the registration request message, where, as shown in the figure As shown in 6, the data structure of the S-NSSAI includes: including 7 bytes, wherein the first byte is the information element indication IEI field of the S-NSSAI, and the second byte is the S-NSSAI content length field. The third byte is the first SST field, the fourth byte is the second SD field, and the fifth to seventh bytes are the second SST field. The first SST field is used to represent the SST of the VPLMN, and the first SST field is filled with a reserved value of 0xFF. The second SST field is used to represent the SST of the HPLMN or the SST of the mapped HPLMN, and the second SD field is used to represent the SD of the HPLMN or the SD of the mapped HPLMN.

As a supplement to the second method, when the SST and SD of the VPLMN need to be sent, the S-NSSAI includes the first SST field and the first SD field, and the first SST field and the first SD field are filled with valid values (non-reserved values) , to denote the SST and SD of the VPLMN.

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

table 3

Manner 3: The registration request message also carries indication information, and the S-NSSAI includes: an SST field and an SD field; when the indication information is the first value, the SST field and the SD field are related to the home slice information.

Wherein, in this manner, the registration request message also carries dedicated indication information, and the values of the indication information are different, and the corresponding S-NSSAI data formats have different meanings. For example, when the indication information is filled with a specific value (first value), such as a valid value and a default value, the S-NSSAI only includes a set of SST fields and SD fields, and the SST field is used to represent the SST of the HPLMN or the SST of the mapped HPLMN, The SD field is used to represent the SD of the HPLMN or the 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 but no visited slice information, the terminal can carry S-NSSAI in the registration request message, where, as shown in the figure 7, the data structure of the S-NSSAI includes: including 6 bytes, wherein the first byte is the S-NSSAI information element indication IEI field, and the second byte is the S-NSSAI content length field, The third byte is the SST field, and the fourth to sixth bytes are the SD field. The SST field is used to represent the SST of the HPLMN or the SST of the mapped HPLMN, and the SD field is used to represent the SD of the HPLMN or the SD of the mapped HPLMN.

As a supplement to the third mode, in the case that the indication information is the second value, the SST field and the SD field are related to the visited site slice information. For example, if 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 or a non-default value, the S-NSSAI only includes a set of SST fields and SD fields, and the SST field is used to indicate The SST, SD field of the VPLMN is used to indicate the SD of the VPLMN.

Assuming that the indication information includes 1 bit, when the value of the indication information is 0, the SST field in the S-NSSAI is used to represent the SST of the HPLMN or the SST of the mapped HPLMN, and the SD field is used to represent 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 to indicate the SST of the VPLMN, and the SD field is used to indicate the SD of the VPLMN. Or, vice versa.

Alternatively, in the case where the presence of indication information is detected, the SST field in the S-NSSAI is used to represent the SST of the HPLMN or the SST of the mapped HPLMN, and the SD field is used to represent the SD of the HPLMN or the SD of the mapped HPLMN; otherwise, S - The SST field in NSSAI is used to represent the SST of the VPLMN, and the SD field is used to represent the SD of the VPLMN.

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

Table 4

In the slice access method according to the embodiment of the present invention, the S-NSSAI sent by the terminal to the network device only includes the home slice information but not the visited slice information, so that the slice information of the HPLMN can be sent to the AMF, and Scenarios where slice information of the corresponding VPLMN is not sent.

The above embodiments respectively introduce the slice access method of the present invention, and the corresponding terminal thereof will be further described in this embodiment below with reference to the accompanying drawings.

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

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

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

Optionally, the S-NSSAI includes: 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 slicing information of the visited site, 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 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.

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

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

Optionally, when the indication information is the second value, the SST field and the SD field are related to the visited slice information.

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

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

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

The terminal embodiments of the present invention are corresponding to the foregoing method embodiments, and all implementation means in the foregoing method embodiments are applicable to the terminal embodiments, and the same technical effects can also be achieved. The S-NSSAI sent by the terminal to the network device only contains the home slicing information but not the visited slicing information, which can support the scenario of sending the HPLMN slicing information to the AMF without sending the corresponding VPLMN slicing information .

As shown in FIG. 9, this embodiment provides a terminal, including:

a processor 91; and a memory 93 connected to the processor 91 through a bus interface 92, the memory 93 is used to store programs and data used by the processor 91 when performing operations, when the processor 91 calls and When the programs and data stored in the memory 93 are executed, the following processes are executed.

The transceiver 94 is connected to the bus interface 92, and is used for receiving and sending data under the control of the processor 91, and is specifically used for: sending a registration request message, which carries the single network slice selection auxiliary information S-NSSAI , S-NSSAI carries the home slice information, and does not carry the visited slice information;

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

Optionally, the S-NSSAI includes: 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 slicing information of the visited site, 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 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.

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

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

Optionally, when the indication information is the second value, the SST field and the SD field are related to the visited slice information.

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

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

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

It should be noted that, in FIG. 9 , the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by processor 91 and various circuits of memory represented by memory 93 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 94 may be a number of elements, including transmitters and transceivers, that provide means for communicating with various other devices over a transmission medium. For different terminals, the user interface 95 may also be an interface capable of externally connecting a required device, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like. 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 can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a computer program, where the computer program includes instructions for executing part or all of the steps of the above method ; and the computer program can be stored in a readable storage medium, and the storage medium can be any form of storage medium.

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

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

Step 101: Receive a registration request message, where the registration request message carries the single network slice selection auxiliary information S-NSSAI, and the S-NSSAI carries the home slice information, but does not carry the visited slice information.

After triggering the registration, the terminal sends slice information to the AMF through a registration request message. The registration request message carries S-NSSAI for indicating slice information, wherein the S-NSSAI may carry different slice information for different application scenarios. For example, when only the slice information of the visited place needs to be sent, the S-NSSAI can carry only the slice information of the visited place; when it is necessary to send the information of the home place slice and the slice information of the visited place, the S-NSSAI can carry the information of the home place slice and the slice information of the visited place. information; when only the home slicing information needs to be sent, the S-NSSAI may only carry the home slicing information, but not the visited slicing information.

Step 102: After receiving the registration request message, send a registration acceptance message.

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

The network device side embodiment of the present invention is similar to the above-mentioned terminal side embodiment, and the home slice information includes: the slice service type SST of the home public land mobile network HPLMN and/or the slice differentiator SD of the HPLMN.

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

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

Further, in this embodiment of the present invention, the terminal carries the home slicing information in the S-NSSAI, but does not carry the visited slicing information, so as to send only the home slicing information to the AMF. The implementation methods include but are not limited to The following way:

Mode 1: S-NSSAI includes: 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 visited site slice information, and are filled with reserved Value; the second SST field and the second SD field are related to the home slice information.

Wherein, the first SST field in the data format of the S-NSSAI of this mode is filled with a reserved value, indicating that the first SST field of the SST of the VPLMN of the visited public land mobile network is invalid; the first SD field is filled with a reserved value, indicating that the visited public land mobile network VPLMN is invalid. The first SD field of the SD of the land mobile network VPLMN is invalid. The first SST includes 8 bits, and the value range is 0 to 255. The first SST is filled with 0 to 127 and belongs to the standard SST range. When the first SST is filled with 128 to 254, it belongs to the operator-defined range. The first SST is filled with 255 (0xFF) is a reserved value. The first SD includes 24 bits, and the value ranges from 0 to (2 ²⁴ -1). When the first SD is filled with 2 ²⁴ -1 (0xFFFFFF), it is a reserved value. Manner 2, the 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, the first SST field in the data format of S-NSSAI in this method is filled with a reserved value, indicating that the first SST field of the SST of the visited public land mobile network VPLMN is invalid; when the SD of the VPLM needs to be sent, the S-NSSAI only Include the second SD field. The first SST includes 8 bits, and the value range is 0 to 255. The first SST is filled with 0 to 127 and belongs to the standard SST range. When the first SST is filled with 128 to 254, it belongs to the operator-defined range. The first SST is filled with 255 (0xFF) is a reserved value.

Manner 3: The registration request message also carries indication information, and the S-NSSAI includes: an SST field and an SD field; when the indication information is the first value, the SST field and the SD field are related to the home slice information.

Wherein, in this manner, the registration request message also carries dedicated indication information, and the values of the indication information are different, and the corresponding S-NSSAI data formats have different meanings. For example, when the indication information is filled with a specific value (first value), such as a valid value and a default value, the S-NSSAI only includes a set of SST fields and SD fields, and the SST field is used to represent the SST of the HPLMN or the SST of the mapped HPLMN, The SD field is used to represent the SD of the HPLMN or the SD of the mapped HPLMN.

As a supplement to the third mode, in the case that the indication information is the second value, the SST field and the SD field are related to the visited site slice information. For example, if 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 or a non-default value, the S-NSSAI only includes a set of SST fields and SD fields, and the SST field is used to indicate The SST, SD field of the VPLMN is used to indicate the SD of the VPLMN.

It is worth noting that the first, second, and third modes of the network device side embodiments correspond to the first, second, and three-phase modes of the terminal-side embodiments, respectively, and all implementation modes of the above-mentioned terminal-side embodiments are applicable to In this embodiment of the network device side, details are not repeated here.

In the slice access method according to the embodiment of the present invention, the network device can receive the S-NSSAI containing only the home slice information but not the visited slice information from the terminal, so that the slice information of the HPLMN can be sent to the AMF, and Scenarios where slice information of the corresponding VPLMN is not sent.

The above embodiments respectively introduce the slice access method of the present invention, and the corresponding network equipment will be further described in this embodiment below with reference to the accompanying drawings.

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

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

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

Optionally, the S-NSSAI includes: 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 slicing information of the visited site, 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 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.

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

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

Optionally, when the indication information is the second value, the SST field and the SD field are related to the visited slice information.

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

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

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

The network device embodiments of the present invention correspond to the foregoing method embodiments, and all implementation means in the foregoing method embodiments are applicable to the network device embodiments, and the same technical effects can also be achieved. The network device can receive, from the terminal, S-NSSAI containing only the home slicing information but not the visited slicing information, so as to support the scenario of sending the slicing information of the HPLMN to the AMF without sending the corresponding slicing information of the VPLMN .

In order to better achieve the above purpose, as shown in FIG. 12, an embodiment of the present invention further provides a network device, the network device includes: 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 to store programs and data used by the processor when performing operations; data information or pilot frequencies are sent through the transceiver 1210 , and also receive the uplink control channel through the transceiver 1210; when the processor 1200 calls and executes the program and data stored in the memory 1220, the following functions are implemented:

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

The transceiver 1210 is used to receive and transmit data under the control of the processor 1200. Specifically, it is used to:

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

After the registration request message is received, a registration accept message is sent.

Optionally, the S-NSSAI includes: 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 slicing information of the visited site, 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 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.

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

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

Optionally, when the indication information is the second value, the SST field and the SD field are related to the visited slice information.

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

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

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

12, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1200 and various circuits of memory represented by memory 1220 are linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1210 may be a number of elements, including transmitters and transceivers, that provide means for communicating with various other devices 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.

Those skilled in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a computer program, where the computer program includes instructions for executing part or all of the steps of the above method ; and the computer program can be stored in a readable storage medium, and the storage medium can be any form of storage medium.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the foregoing slice access method embodiments can be implemented, and the same can be achieved. The technical effect, in order to avoid repetition, will not be repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

In addition, it should be pointed out that, in the apparatus and method of the present invention, obviously, each component or each step can be decomposed and/or recombined. These disaggregations and/or recombinations should be considered as equivalents of the present invention. Also, the steps of performing the above-mentioned series of processes can naturally be performed in chronological order in the order described, but need not necessarily be performed in chronological order, and some steps can be performed in parallel or independently of each other. Those of ordinary skill in the art can understand that all or any steps or components of the method and device of the present invention can be implemented in any computing device (including a processor, storage medium, etc.) or a network of computing devices in hardware, firmware, etc. , software or a combination thereof, which can be realized by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

Accordingly, the objects of the present invention can also be achieved by running a program or set of programs on any computing device. The computing device may be a known general purpose device. Therefore, the object of the present invention can also be achieved only by providing a program product containing program code for implementing the method or 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. Obviously, the storage medium can be any known storage medium or any storage medium developed in the future. It should also be pointed out that, in the device and method of the present invention, obviously, each component or each step can be decomposed and/or recombined. These disaggregations and/or recombinations should be considered as equivalents of the present invention. Also, the steps of executing the above-described series of processes can naturally be executed in chronological order in the order described, but need not necessarily be executed in chronological order. Certain steps may be performed in parallel or independently of each other.

The above are the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (29)

1. A slice access method is applied to a terminal, and is characterized by comprising 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.

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:

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.

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;

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.

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;

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

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:

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.

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;

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.

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;

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

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:

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.

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;

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.

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;

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

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.

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