Network access method, terminal and network side device

Abstract

This application discloses a network access method, a terminal, and a network-side device, belonging to the field of communication technology. The network access method of this application includes: when a first condition is met, the terminal performs a first operation; the first operation includes at least one of the following: accessing the first network using a first type identifier, and accessing the first network without using a third type identifier.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a network access method, a terminal, and network-side equipment. Background Technology

[0002] Normally, 5G Stand-alone Non-Public Network (SNPN) subscribers are not supported in accessing Public Land Mobile Networks (PLMNs). However, in emergency service scenarios, terminals are allowed to urgently register with the PLMN network.

[0003] In related technologies, when a terminal accesses a PLMN for services, it can only use a terminal identifier in the format of the International Mobile Subscriber Identity (IMSI). However, if the PLMN ID of the SNPN to which the terminal is subscribed is not unique, an additional Network Identification (NID) is required to identify the terminal to support possible authentication. However, PLMN networks currently do not support emergency services using NID and Network-Specific Identifier (NSI) formats. Therefore, how to uniquely identify a terminal when it accesses a PLMN under an SNPN subscription is a problem that needs to be solved. Summary of the Invention

[0004] This application provides a network access method, a terminal, and a network-side device, which can solve the problem of how to uniquely identify a terminal when an SNPN-subscribed terminal accesses a PLMN.

[0005] Firstly, a network access method is provided for use in a terminal, the method comprising:

[0006] If the first condition is met, the terminal performs the first operation;

[0007] The first operation includes at least one of the following: accessing the first network using a first type identifier and accessing the first network without using a third type identifier;

[0008] The first condition includes at least one of the following:

[0009] The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier.

[0010] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier.

[0011] The first network does not support Network Identifier (NID);

[0012] The first network does not support end-user identifiers in the Network Specific Identifier (NSI) format;

[0013] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0014] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0015] The first type of identifier includes end-user identifiers that cannot contain NID;

[0016] The third type of identifier includes an end-user identifier that can contain an NID.

[0017] The first type of identifier includes end-user identifiers that cannot contain NID.

[0018] Secondly, a network access method is provided for use in a terminal, the method comprising:

[0019] If the second condition is met, the terminal performs the second operation;

[0020] The second operation includes one of the following:

[0021] Access the first network using the second type of identifier;

[0022] Access to the first network using a first type of identifier and first indication information;

[0023] The second condition includes at least one of the following:

[0024] The PLMN ID of the network to which the terminal belongs is not unique;

[0025] The PLMN ID in the first type of identifier of the terminal is not unique;

[0026] The first network does not support Network Identifier (NID);

[0027] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0028] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0029] The first network does not support the network-specific identifier (NSI) format for end-user identifiers;

[0030] The first type of identifier includes end-user identifiers that cannot contain NID;

[0031] The second type of identifier includes at least one of the following: terminal device identifier, media access control MAC address, 64-bit extended unique identifier EUI-64, and terminal identifier other than the terminal user identifier;

[0032] The first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0033] The third operation includes at least one of the following:

[0034] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0035] Select the network function (NF) of the terminal's home network for the terminal;

[0036] The process of authenticating and / or authorizing the terminal;

[0037] The process of activating the security mode on the terminal;

[0038] The fifth operation includes at least one of the following:

[0039] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0040] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0041] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0042] Thirdly, a network access method is provided for use in a terminal, the method comprising:

[0043] If the third condition is met, the terminal will perform the fourth operation;

[0044] The fourth operation includes one of the following:

[0045] Access the first network using a third-type identifier;

[0046] Access to the first network using a first type of identifier and first indication information;

[0047] The third condition includes at least one of the following:

[0048] The PLMN ID of the network to which the terminal belongs is not unique;

[0049] The PLMN ID in the first type of identifier of the terminal is not unique;

[0050] The first network supports Network Identifier (NID);

[0051] The first network supports the Network Specific Identifier (NSI) format for end-user identifiers;

[0052] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0053] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0054] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0055] The third operation includes at least one of the following:

[0056] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0057] Select the network function (NF) of the terminal's home network for the terminal;

[0058] The process of authenticating and / or authorizing the terminal;

[0059] The process of activating the security mode on the terminal;

[0060] The fifth operation includes at least one of the following:

[0061] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0062] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0063] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier;

[0064] The first type of identifier includes: end-user identifiers that cannot contain NID;

[0065] The third type of identifier includes: an end-user identifier that can contain an NID.

[0066] Fourthly, a network access method is provided, applied to a terminal, the method comprising:

[0067] The terminal receives an identifier acquisition request from the first network, and the requested identifier type is the fourth type;

[0068] The terminal executes an identifier retrieval response operation based on the identifier type in the identifier retrieval request;

[0069] The identifier acquisition response operation includes at least one of the following:

[0070] Send a first type identifier to the first network;

[0071] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[0072] Return the first type identifier and the first indication information to the first network;

[0073] Send a third type identifier to the first network;

[0074] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID;

[0075] The first type of identifier includes: end-user identifiers that cannot contain NID;

[0076] The third type of identifier includes: an end-user identifier that can contain an NID;

[0077] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0078] The third operation includes at least one of the following:

[0079] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0080] Select the network function (NF) of the terminal's home network for the terminal;

[0081] The process of authenticating and / or authorizing the terminal;

[0082] The process of activating the security mode on the terminal;

[0083] The fifth operation includes at least one of the following:

[0084] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0085] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0086] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0087] Fifthly, a network access method is provided, applied to a terminal, the method comprising:

[0088] The terminal uses a first type identifier and second indication information to access the first network;

[0089] The second indication information is used to indicate at least one of the following:

[0090] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0091] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0092] The first type identifier is not unique, or the first type identifier is unique;

[0093] Request to skip or not perform the third operation, or request to perform the third operation;

[0094] Request to perform the fifth operation, or request not to perform the fifth operation;

[0095] The third operation includes at least one of the following:

[0096] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0097] Select the network function (NF) of the terminal's home network for the terminal;

[0098] The process of authenticating and / or authorizing the terminal;

[0099] The process of activating the security mode on the terminal;

[0100] The fifth operation includes at least one of the following:

[0101] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0102] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0103] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier;

[0104] The first type of identifier includes end-user identifiers that cannot contain a Network Identifier (NID).

[0105] Sixthly, a network access method is provided, applied to a network-side device, the method comprising:

[0106] The network-side device receives the first information;

[0107] Based on the first information, the network-side device may skip or not perform the third operation; and / or perform the fifth operation;

[0108] The first information includes one of the following:

[0109] Second type of identifier;

[0110] First type of identification and first indication information;

[0111] First type of identification and second indication information;

[0112] The first type of identifier includes an end-user identifier that cannot contain a network identification code (NID); the second type of identifier includes at least one of the following: a terminal device identifier, a media access control (MAC) address, a 64-bit extended unique identifier (EUI-64), or a terminal identifier other than an end-user identifier.

[0113] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0114] The second indication information is used to indicate at least one of the following:

[0115] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0116] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0117] The first type identifier is not unique, or the first type identifier is unique;

[0118] Request to skip or not perform the third operation, or request to perform the third operation;

[0119] Request to perform the fifth operation, or request not to perform the fifth operation;

[0120] The third operation includes at least one of the following:

[0121] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0122] Select the network function (NF) of the terminal's home network for the terminal;

[0123] The process of authenticating and / or authorizing the terminal;

[0124] The process of activating the security mode on the terminal;

[0125] The fifth operation includes at least one of the following:

[0126] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0127] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0128] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0129] Seventhly, a network access method is provided, applied to a network-side device, the method comprising:

[0130] The network-side device sends a second message, which includes at least one of the following: a third indication message, a fourth indication message, and a fifth indication message;

[0131] in,

[0132] The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID);

[0133] The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers.

[0134] The fifth instruction information is used to indicate at least one of the following:

[0135] The PLMN ID of a network is unique, or the PLMN ID of a network is not unique;

[0136] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0137] Eighthly, a terminal is provided, comprising:

[0138] The first execution unit is configured to perform a first operation when a first condition is met;

[0139] The first operation includes at least one of the following: accessing the first network using a first type identifier and accessing the first network without using a third type identifier;

[0140] The first condition includes at least one of the following:

[0141] The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier.

[0142] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier.

[0143] The first network does not support Network Identifier (NID);

[0144] The first network does not support the network-specific identifier (NSI) format for end-user identifiers;

[0145] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0146] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0147] The first type of identifier includes end-user identifiers that cannot contain NID;

[0148] The third type of identifier includes an end-user identifier that can contain an NID.

[0149] Ninthly, a terminal is provided, comprising:

[0150] The second execution unit is used to execute the second operation when the second condition is met;

[0151] The second operation includes one of the following:

[0152] Access the first network using the second type of identifier;

[0153] Access to the first network using a first type of identifier and first indication information;

[0154] The second condition includes at least one of the following:

[0155] The PLMN ID of the network to which the terminal belongs is not unique;

[0156] The PLMN ID in the first type of identifier of the terminal is not unique;

[0157] The first network does not support Network Identifier (NID);

[0158] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0159] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0160] The first network does not support the network-specific identifier (NSI) format for end-user identifiers;

[0161] The first type of identifier includes end-user identifiers that cannot contain NID;

[0162] The second type of identifier includes at least one of the following: terminal device identifier, media access control MAC address, 64-bit extended unique identifier EUI-64, and terminal identifier other than the terminal user identifier;

[0163] The first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0164] The third operation includes at least one of the following:

[0165] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0166] Select the network function (NF) of the terminal's home network for the terminal;

[0167] The process of authenticating and / or authorizing the terminal;

[0168] The process of activating the security mode on the terminal;

[0169] The fifth operation includes at least one of the following:

[0170] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0171] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0172] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0173] In a tenth aspect, a terminal is provided, comprising:

[0174] The fourth execution unit is used to execute the fourth operation when the third condition is met;

[0175] The fourth operation includes one of the following:

[0176] Access the first network using a third-type identifier;

[0177] Access to the first network using a first type of identifier and first indication information;

[0178] The third condition includes at least one of the following:

[0179] The PLMN ID of the network to which the terminal belongs is not unique;

[0180] The PLMN ID in the first type of identifier of the terminal is not unique;

[0181] The first network supports Network Identifier (NID);

[0182] The first network supports the Network Specific Identifier (NSI) format for end-user identifiers;

[0183] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0184] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0185] The first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0186] The third operation includes at least one of the following:

[0187] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0188] Select the network function (NF) of the terminal's home network for the terminal;

[0189] The process of authenticating and / or authorizing the terminal;

[0190] The process of activating the security mode on the terminal;

[0191] The first type of identifier includes: end-user identifiers that cannot contain NID;

[0192] The third type of identifier includes: an end-user identifier that can contain an NID;

[0193] The third operation includes at least one of the following:

[0194] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0195] Select the network function (NF) of the terminal's home network for the terminal;

[0196] The process of authenticating and / or authorizing the terminal;

[0197] The process of activating the security mode on the terminal;

[0198] The fifth operation includes at least one of the following:

[0199] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0200] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0201] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0202] Eleventhly, a terminal is provided, comprising:

[0203] The third receiving unit is used to receive an identifier from the first network to obtain a request, wherein the identifier type of the request is a fourth type;

[0204] The sixth execution unit is used to perform an identifier retrieval response operation based on the identifier type in the identifier retrieval request;

[0205] The identifier acquisition response operation includes at least one of the following:

[0206] Send a first type identifier to the first network;

[0207] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[0208] Return the first type identifier and the first indication information to the first network;

[0209] Send a third type identifier to the first network;

[0210] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID;

[0211] The first type of identifier includes: end-user identifiers that cannot contain NID;

[0212] The third type of identifier includes: an end-user identifier that can contain an NID;

[0213] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0214] The third operation includes at least one of the following:

[0215] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0216] Select the network function (NF) of the terminal's home network for the terminal;

[0217] The process of authenticating and / or authorizing the terminal;

[0218] The process of activating the security mode on the terminal;

[0219] The fifth operation includes at least one of the following:

[0220] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0221] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0222] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0223] In a twelfth aspect, a terminal is provided, comprising:

[0224] The seventh execution unit is used to access the first network using a first type identifier and second indication information;

[0225] The second indication information is used to indicate at least one of the following:

[0226] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0227] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0228] The first type identifier is not unique, or the first type identifier is unique;

[0229] Request to skip or not perform the third operation, or request to perform the third operation;

[0230] Request to perform the fifth operation, or request not to perform the fifth operation;

[0231] The first type of identifier includes end-user identifiers that cannot contain a network identification code (NID).

[0232] The third operation includes at least one of the following:

[0233] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0234] Select the network function (NF) of the terminal's home network for the terminal;

[0235] The process of authenticating and / or authorizing the terminal;

[0236] The process of activating the security mode on the terminal;

[0237] The fifth operation includes at least one of the following:

[0238] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0239] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0240] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0241] In a thirteenth aspect, a network-side device is provided, comprising:

[0242] The fourth receiving unit is used to receive the first information;

[0243] The eighth execution unit is configured to skip or not perform the third operation based on the first information, and / or perform the fifth operation;

[0244] The first information includes one of the following:

[0245] Second type of identifier;

[0246] First type of identification and first indication information;

[0247] First type of identification and second indication information;

[0248] The first type of identifier includes an end-user identifier that cannot contain a network identification code (NID); the second type of identifier includes at least one of the following: a terminal device identifier, a media access control (MAC) address, a 64-bit extended unique identifier (EUI-64), or a terminal identifier other than an end-user identifier.

[0249] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0250] The second indication information is used to indicate at least one of the following:

[0251] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0252] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0253] The first type identifier is not unique, or the first type identifier is unique;

[0254] Request to skip or not perform the third operation, or request to perform the third operation;

[0255] Request to perform the fifth operation, or request not to perform the fifth operation;

[0256] The third operation includes at least one of the following:

[0257] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0258] Select the network function (NF) of the terminal's home network for the terminal;

[0259] The process of authenticating and / or authorizing the terminal;

[0260] The process of activating the security mode on the terminal;

[0261] The fifth operation includes at least one of the following:

[0262] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0263] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0264] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0265] In a fourteenth aspect, a network-side device is provided, comprising:

[0266] The first transmitting unit is configured to transmit second information, the second information including at least one of the following: third indication information, fourth indication information, and fifth indication information;

[0267] in,

[0268] The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID);

[0269] The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers.

[0270] The fifth instruction information is used to indicate at least one of the following:

[0271] The PLMN ID of a network is unique, or the PLMN ID of a network is not unique;

[0272] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0273] In a fifteenth aspect, a terminal is provided, the terminal including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein when executed by the processor, the program or instructions implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect, or the steps of the method as described in the fourth aspect, or the steps of the method as described in the fifth aspect.

[0274] In a sixteenth aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is configured to perform a first operation when a first condition is met; or, the processor is configured to perform a second operation when a second condition is met; or, the terminal performs a fourth operation when a third condition is met; or, the communication interface is configured to receive an identifier acquisition request from a first network, wherein the requested identifier type is a fourth type; the processor is configured to perform an identifier acquisition response operation according to the identifier type in the identifier acquisition request; or, the processor is configured to access the first network using a first type identifier and second indication information.

[0275] In a seventeenth aspect, a network-side device is provided, the network-side device including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method as described in the sixth aspect, or implement the steps of the method as described in the seventh aspect.

[0276] Eighteenthly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to receive first information, and the processor is used to skip or not perform a third operation and perform a fifth operation based on the first information. Alternatively, the communication interface is used to send second information, the second information including at least one of the following: third indication information, fourth indication information, and fifth indication information.

[0277] In a nineteenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect, or the steps of the method as described in the fourth aspect, or the steps of the method as described in the fifth aspect, or the steps of the method as described in the sixth aspect, or the steps of the method as described in the seventh aspect.

[0278] In a twentieth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the method as described in the first aspect, or the method as described in the second aspect, or the method as described in the third aspect, or the method as described in the fourth aspect, or the method as described in the fifth aspect, or the method as described in the sixth aspect, or the method as described in the seventh aspect.

[0279] In a twenty-first aspect, a computer program / program product is provided, the computer program / program product being stored in a non-transient storage medium, the program / program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect, or the steps of the method as described in the fourth aspect, or the steps of the method as described in the fifth aspect, or the steps of the method as described in the sixth aspect, or the steps of the method as described in the seventh aspect.

[0280] In this application embodiment, a method for terminal access to the network under different conditions is provided, so that the terminal can flexibly access the public network to carry out network services. Attached Figure Description

[0281] Figure 1 This is a structural diagram of a wireless communication system applicable to the embodiments of this application;

[0282] Figure 2 One of the flowcharts of the network access method provided in the embodiments of this application;

[0283] Figure 3 A second schematic flowchart illustrating the network access method provided in this application embodiment;

[0284] Figure 4 The third flowchart illustrating the network access method provided in this application embodiment;

[0285] Figure 5 Fourth flowchart illustrating the network access method provided in this application embodiment;

[0286] Figure 6 Fifth flowchart illustrating the network access method provided in this application embodiment;

[0287] Figure 7 A flowchart illustrating the network access method provided in this application embodiment is shown in Figure 6.

[0288] Figure 7A Seventh schematic flowchart of the network access method provided in the embodiments of this application;

[0289] Figure 8 This is one of the structural schematic diagrams of the terminal provided in the embodiments of this application;

[0290] Figure 9 This is a second schematic diagram of the terminal structure provided in the embodiments of this application;

[0291] Figure 10 This is the third schematic diagram of the terminal structure provided in the embodiments of this application;

[0292] Figure 11 This is the fourth schematic diagram of the terminal structure provided in the embodiments of this application;

[0293] Figure 12 Fifth schematic diagram of the terminal structure provided in the embodiments of this application;

[0294] Figure 13 This is one of the structural schematic diagrams of the network-side device provided in the embodiments of this application;

[0295] Figure 13A A second schematic diagram of the network-side device provided in the embodiments of this application;

[0296] Figure 14 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0297] Figure 15 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application;

[0298] Figure 16 This is a schematic diagram of the network-side device provided in an embodiment of this application. Detailed Implementation

[0299] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0300] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0301] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to applications other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0302] Figure 1This diagram illustrates a structural diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. In this context, terminal 11 can also be referred to as a terminal device or user equipment (UE). Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication functions, such as refrigerators, televisions, washing machines, or furniture), etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, game consoles, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side device 12 can be a base station or a core network. The base station can be referred to as a node B, evolved node B, access point, base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, WLAN access point, WiFi node, transmitting and receiving point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only the base station in the NR system is used as an example, but the specific type of base station is not limited.

[0303] In one optional embodiment of this application, obtaining or acquiring can be understood as acquiring from configuration, receiving, receiving after a request, acquiring through self-learning, inferring from unreceived information, or acquiring after processing received information. The specific method can be determined according to actual needs, and this embodiment does not limit this. For example, if a certain capability indication information sent by the device is not received, it can be inferred that the device does not support that capability.

[0304] In one optional embodiment of this application, the transmission may include a broadcast, a system message broadcast, or a response to a request followed by a return.

[0305] In one alternative embodiment of this application, "alone" and "independent" can mean the same thing and can be used interchangeably.

[0306] In one optional embodiment of this application, the communication device may include at least one of the following: a communication network element and a terminal.

[0307] In one optional embodiment of this application, the communication network element may include at least one of the following: a core network element and a radio access network element.

[0308] In one optional embodiment of this application, the core network element (CN element) may include, but is not limited to, at least one of the following: core network equipment, core network node, core network function, core network element, Mobility Management Entity (MME), Access Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Serving Gateway (SGW), PDN Gateway (PDN Gateway), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Serving GPRS Support Node (SGSN), Gateway GPRS Support Node (GGSN), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), and Application Function. Function (AF) is a network element used for digital twin task management.

[0309] In one optional embodiment of this application, the RAN network element may include, but is not limited to, at least one of the following: radio access network equipment, radio access network node, radio access network function, radio access network unit, 3GPP radio access network, non-3GPP radio access network, centralized unit (CU), distributed unit (DU), base station, evolved Node B (eNB), 5G base station (gNB), radio network controller (RNC), base station (NodeB), non-3GPP interworking function (N3IWF), access controller (AC) node, access point (AP) equipment, or wireless local area network (WLAN) node, N3IWF.

[0310] In this embodiment, UE refers to a terminal. Terminal 11 may include a relay that supports terminal functions and / or a terminal that supports relay functions. A terminal may also be called a terminal device or user equipment (UE). A terminal may be a mobile phone, tablet personal computer, laptop computer, personal digital assistant (PDA), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, or vehicle-mounted device, etc. It should be noted that the specific type of terminal is not limited in this embodiment.

[0311] In addition, the embodiments of this application can be applied to communication systems such as 4G, 5G, and 6G.

[0312] In an optional embodiment of the present invention, the home network of the terminal includes the terminal's subscription network.

[0313] In an optional embodiment of the present invention, the terminal's subscription network refers to the network to which the terminal has subscribed.

[0314] In an optional embodiment of the present invention, the subscriber data of the home network refers to the subscriber data of those who have signed up for the network. The subscriber data includes at least one of the following: subscription data, a certificate, a terminal subscriber identifier (also referred to as an end-user identifier), and information about the network corresponding to the subscriber data. The certificate is used by the subscribed network to authenticate the terminal and / or by the terminal to authenticate the subscribed network.

[0315] In an optional embodiment of the present invention, the subscription data in the subscriber data is the subscriber's subscription information on the subscription network. The subscription data may be a collection of the subscriber's subscription information for a set of network services, such as at least one of the following: voice, SMS, and data traffic.

[0316] In an optional embodiment of the invention, the NSI (Network Specific Identifier) ​​format can be represented as the NAI (Network Access Identifier) ​​format. The NID can be included in the realm field of the end-user identifier associated with the NSI format.

[0317] In an optional embodiment of the invention, the emergency service includes an emergency call.

[0318] In an optional embodiment of the present invention, the user is a subscriber;

[0319] In an optional embodiment of the present invention, the terminal user identifier may be a user terminal identifier (UE identifier);

[0320] In one optional embodiment of the present invention, one subscriber acts as one UE. It is easy to understand that when a terminal device has multiple subscribers, it can act as multiple UEs.

[0321] In an optional embodiment of the present invention, the terminal identifier includes at least one of the following: a terminal user identifier and a terminal device identifier.

[0322] In an optional embodiment of the invention, "unique" means globally unique.

[0323] In an optional embodiment of the present invention, the first network supports Network Identifier (NID) including: the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type identifier; the first network supports terminal user identifiers that can include NID.

[0324] In an optional embodiment of the present invention, the first network does not support network identification code NID including at least one of the following: the first network does not support obtaining the network identification code NID of the terminal's home network by means other than the first type identifier; the first network does not support terminal identifiers (such as terminal user identifiers) that can contain NID.

[0325] In one optional embodiment of the present invention, the NID is used together with the PLMN ID as identification information for a network (such as an SNPN). In one implementation, the PLMN ID is unique, and the PLMN ID can identify the network or network elements indexed to the network (e.g., network elements for data management (such as UDM, UDR), network elements for authentication (such as AUSF)). In another implementation, the NID is unique, and the NID can identify the network or network elements indexed to the network. In yet another implementation, the PLMN ID is not unique, and the network or network elements indexed to the network can only be identified by using both the NID and the PLMN ID together.

[0326] In an optional embodiment of the present invention, the Nth indication information (where N is one, two, three, four, and / or five) can be implemented through the value of a routing indicator. For example, the meaning of the Nth indication information can be reflected through a conventional value in the routing indicator. The routing indicator is included in the end-user identifier (such as SUPI or SUCI).

[0327] In an optional embodiment of the present invention, the PLMN ID includes at least one of the following: MNC, MCC.

[0328] In an optional embodiment of the present invention, the PLMN ID in the first type identifier of the terminal includes at least one of the following: the PLMN ID of the terminal's home network, and the PLMN ID of the network that assigned the first type identifier. In one embodiment, when the first type identifier is a permanent terminal user identifier (such as SUCI, SUPI, or IMSI), the PLMN ID in the first type identifier is the PLMN ID of the terminal's home network. In another embodiment, when the first type identifier is a temporary terminal user identifier (such as GUTI or 5G-GUTI), the PLMN ID in the first type identifier is the PLMN ID of the network that assigned the temporary terminal user identifier.

[0329] In an optional embodiment of the present invention, the network that assigns the first type of identifier to the terminal is, for example, the network serving the terminal. In this case, the assigned first type of identifier includes a temporary terminal user identifier, such as a terminal user identifier related to a globally unique temporary identifier (GUTI) or a terminal user identifier related to a temporary mobile subscriber identity (S-TMSI).

[0330] In an optional embodiment of the present invention, the network that assigns the first type identifier includes at least one of the following: the home network of the terminal, and the network that assigns the temporary terminal user identifier (i.e., the first type identifier).

[0331] In an optional embodiment of the present invention, the terminal user identifier does not include at least one of the following: terminal device identifier, media access control MAC address, or 64-bit extended unique identifier EUI-64.

[0332] The network access method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0333] Figure 2 This is one of the flowcharts illustrating a network access method provided in an embodiment of this application. Figure 2As shown, the network access method is executed by a terminal. The network access method includes the following steps:

[0334] Step 200: If the first condition is met, the terminal performs the first operation;

[0335] The first operation includes at least one of the following: accessing the first network using a first type identifier and accessing the first network without using a third type identifier;

[0336] In one embodiment, the first condition includes at least one of the following:

[0337] The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier.

[0338] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier.

[0339] The first network does not support Network Identifier (NID);

[0340] The first network does not support the network-specific identifier (NSI) format for end-user identifiers;

[0341] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0342] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

[0343] In another implementation, the first condition includes at least one of the following:

[0344] The first network does not support Network Identifier (NID);

[0345] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes SNPN.

[0346] The first type of identifier includes end-user identifiers that cannot contain NID;

[0347] The third type of identifier includes an end-user identifier that can contain an NID.

[0348] In an optional embodiment of the present invention, the PLMN ID includes at least one of the following: MNC, MCC.

[0349] In an optional embodiment of the present invention, the PLMN ID in the first type identifier of the terminal includes at least one of the following: the PLMN ID of the terminal's home network, and the PLMN ID of the network that assigned the first type identifier.

[0350] In one embodiment, when the first type identifier is a permanent terminal user identifier (such as SUCI, SUPI, or IMSI), the PLMN ID in the first type identifier is the PLMN ID of the terminal's home network. In another embodiment, when the first type identifier is a temporary terminal user identifier (such as GUTI or 5G-GUTI), the PLMN ID in the first type identifier is the PLMN ID of the network that assigned the temporary terminal user identifier.

[0351] In an optional embodiment of the present invention, the network that assigns the first type of identifier to the terminal is, for example, the network serving the terminal. In this case, the assigned first type of identifier includes a temporary terminal user identifier, such as a terminal user identifier related to a globally unique temporary identifier (GUTI) or a terminal user identifier related to a temporary mobile subscriber identity (S-TMSI).

[0352] In an optional embodiment of the present invention, the network that assigns the first type identifier includes at least one of the following: the home network of the terminal, and the network that assigns the temporary terminal user identifier (i.e., the first type identifier).

[0353] In one implementation, the identification information of the terminal's home network includes a PLMN ID and an NID. If the PLMN ID of the terminal's home network is not unique, for example, two terminals from different home networks may have the same IMSI. If two terminals use their IMSIs to access the first network, the first network will not be able to distinguish between the two terminals. Therefore, in one implementation, the terminal cannot access the network using the first type of identifier. Therefore, in order to uniquely identify the terminal in the first network and enable the terminal to access the first network, it may be necessary to use an additional NID to identify the terminal to support possible authentication. However, if the first network does not support NIDs, this method cannot be implemented. Therefore, this embodiment proposes that, under the condition of satisfying a first condition, the terminal uses the first type of identifier to access the first network, and / or does not use the third type of identifier to access the first network.

[0354] In one implementation, if the PLMN ID of the terminal's home network is unique, and / or the first network does not support Network Identifier (NID), then a first type of identifier is used to access the first network, and / or a third type of identifier is not used to access the first network.

[0355] In one implementation, the PLMN ID of the terminal's home network is not unique, but the first network supports obtaining the network identifier (NID) of the terminal's home network through methods other than the first type identifier. The terminal accesses the first network using the first type identifier and / or accesses the first network without using the third type identifier.

[0356] In one implementation, if the PLMN ID in the first type identifier of the terminal is not unique, but the first network supports obtaining the network identifier (NID) of the network that assigned the first type identifier through a means other than the first type identifier, then the first type identifier is used to access the first network, and / or the third type identifier is not used to access the first network.

[0357] It should be noted that the fact that the first network supports obtaining the network identifier (NID) of the terminal's home network through methods other than the first type identifier implicitly reveals that the first network supports NID.

[0358] Optionally, the first condition further includes at least one of the following:

[0359] The terminal needs to initiate an emergency service;

[0360] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0361] The first network supports emergency services or emergency calls;

[0362] The terminal needs to access the first network for emergency services;

[0363] The network type of the first network is a Public Land Mobile Network (PLMN).

[0364] The terminal does not have a temporary user identifier assigned by the first network;

[0365] The terminal accesses the first network using subscriber data from the home network;

[0366] The network type of the second network is an Independent Non-Public Network (SNPN).

[0367] It is understood that the terminal determines the terminal identification type (such as a first type identifier, a second type identifier, or a third type identifier) ​​for accessing the first network based on information from its home network (such as identification information and / or network type), and it can be determined that the terminal uses subscriber data from the home network to access the first network.

[0368] It is understood that if at least one of the first conditions mentioned above is met, the terminal is allowed to access the first network.

[0369] Optionally, the end-user identifier that cannot contain an NID includes at least one of the following:

[0370] End-user identifiers related to the International Mobile Subscriber Identity (IMSI);

[0371] Temporary end-user identifiers that cannot contain NIDs.

[0372] Alternatively, the end-user identifier that cannot contain NID includes at least one of the following:

[0373] It cannot contain a permanent end-user identifier (NID);

[0374] Temporary end-user identifiers that cannot contain NIDs are not allowed.

[0375] In one implementation, the temporary end-user identifier that cannot contain NID includes the end-user identifier associated with the International Mobile Subscriber Identity (IMSI).

[0376] Furthermore, the end-user identifier associated with the IMSI includes at least one of the following:

[0377] IMSI;

[0378] Subscription Permanent Identifier (SUPI) in IMSI format;

[0379] Subscription Concealed Identifier (SUCI) in IMSI format;

[0380] Furthermore, the temporary end-user identifier that cannot contain NID includes at least one of the following:

[0381] End-user identifiers related to a globally unique temporary identifier (GUTI);

[0382] The end-user identifier associated with the Temporary Mobile Subscriber Identity (S-TMSI).

[0383] Furthermore, the end-user identifier associated with the GUTI includes at least one of the following:

[0384] GUTI;

[0385] 5G Globally Unique Temporary Identifier (GUTI).

[0386] Furthermore, the S-TMSI-related end-user identifier includes at least one of the following:

[0387] S-TMSI;

[0388] 5G Temporary Mobile Subscriber Identity (5G-S-TMSI).

[0389] In one embodiment, the terminal user identifier capable of containing NID includes at least one of the following: a permanent terminal user identifier capable of containing NID, or a terminal user identifier capable of containing NID.

[0390] In one embodiment, the NID's end-user identifier includes at least one of the following: an NSI-related end-user identifier, or a temporary end-user identifier that can contain the NID.

[0391] In one embodiment, the NSI-related end-user identifier includes at least one of the following:

[0392] SUPI in NSI format;

[0393] SUCI in NSI format.

[0394] Optionally, the identification information of the terminal's home network may further include a PLMN ID; and / or,

[0395] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[0396] In this embodiment of the application, when the first condition is met, the terminal uses a first type identifier to access the first network and / or does not use a third type identifier to access the first network, thereby enabling the terminal to flexibly access the public network to perform network services (such as emergency services).

[0397] In some optional embodiments of this application, the method further includes:

[0398] The terminal acquires second information, which includes at least one of the following: third instruction information, fourth instruction information, and fifth instruction information.

[0399] The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID).

[0400] The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers.

[0401] The fifth indication information is used to indicate at least one of the following:

[0402] The PLMN ID of a network is unique, or the PLMN ID of a network is not unique;

[0403] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0404] In one embodiment, the terminal obtains third indication information from a first network, the third indication information being used to indicate one of the following: the first network does not support Network Identifier (NID), or the first network supports Network Identifier (NID);

[0405] In one embodiment, the terminal obtains fourth indication information from a first network, the fourth indication information indicating one of the following: the first network supports NSI format terminal user identifiers, or the first network does not support NSI format terminal user identifiers.

[0406] In one embodiment, the terminal obtains fifth indication information from the home network, the fifth indication information being used to indicate at least one of the following:

[0407] The PLMN ID of the home network is unique, or the PLMN ID of the home network is not unique;

[0408] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0409] In one embodiment, the terminal obtains fifth indication information from the network of the serving terminal, the fifth indication information being used to indicate at least one of the following:

[0410] The PLMN ID of the home network is unique, or the PLMN ID of the home network is not unique;

[0411] The PLMN ID of the network of the service terminal is unique, or the PLMN ID of the network of the service terminal is not unique;

[0412] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0413] For example, when a terminal obtains "fifth indication information" from the network of the serving terminal, and the fifth indication information indicates one of the following: the PLMN ID of the home network is unique, or the PLMN ID of the home network is not unique;", this includes the terminal obtaining the fifth information from the home network through the network of the serving terminal.

[0414] In one implementation, when the second information is generated by the terminal's home network, the network-side device (such as UDM or HSS) in the terminal's home network sends the second information to the terminal through the network-side device (such as AMF or MME) serving the terminal.

[0415] In one implementation, a terminal accesses a first network using a first type identifier, including: the terminal sending the first type identifier to the first network.

[0416] Through the embodiments of this application, the terminal can flexibly access the public network to perform network services (such as emergency services).

[0417] Figure 3 This is a second schematic flowchart illustrating the network access method provided in an embodiment of this application. Figure 3 As shown, the network access method is executed by a terminal.

[0418] The network access method includes the following steps:

[0419] Step 300: If the second condition is met, the terminal performs the second operation;

[0420] The second operation includes one of the following:

[0421] Access the first network using the second type of identifier;

[0422] Access to the first network using a first type of identifier and first indication information;

[0423] In one embodiment, the second condition includes at least one of the following:

[0424] The PLMN ID of the network to which the terminal belongs is not unique;

[0425] The PLMN ID in the first type of identifier of the terminal is not unique;

[0426] The first network does not support Network Identifier (NID);

[0427] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0428] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0429] The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

[0430] In another implementation, the second condition includes at least one of the following:

[0431] The first network does not support Network Identifier (NID);

[0432] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes SNPN.

[0433] Optionally, the first network does not support network identification code NID including at least one of the following: the first network does not support obtaining the network identification code NID of the terminal's home network through means other than the first type identifier, and the first network does not support terminal user identifiers that can contain NID.

[0434] In one implementation, when the PLMN ID of the terminal's home network is not unique and the first network does not support the Network Identifier (NID), the terminal uses a second type of identifier to access the first network.

[0435] In one implementation, when the PLMN ID of the terminal's home network is not unique, the terminal uses a second type of identifier to access the first network.

[0436] In another implementation, if the identification information of the terminal's home network includes NID and the first network does not support network identification code NID, the terminal uses a second type of identifier to access the first network.

[0437] In one implementation, when the PLMN ID of the terminal's home network is not unique, the terminal can use a first type identifier and first indication information to access the first network.

[0438] In another implementation, if the PLMN ID of the terminal's home network is not unique and the first network does not support the Network Identifier (NID), the terminal can use the first type identifier and the first indication information to access the first network.

[0439] The first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation.

[0440] In one implementation, the terminal accesses the first network using a first type identifier and first indication information. This can be understood as follows: during the process of accessing the first network using the first type identifier, the terminal sends the first indication information to the first network to request to skip or not perform the third operation; and requests to perform the fifth operation, thereby enabling the terminal to successfully access the first network.

[0441] Optionally, the first indication information is implemented through a routing indicator. For example, the routing indicator is set to a first value, which indicates at least one of the following: the PLMN of the UE's home network is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); a request to skip or not perform the third operation; or a request to perform the fifth operation.

[0442] The third operation includes at least one of the following:

[0443] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0444] Select the network function (NF) of the terminal's home network for the terminal;

[0445] The process of authenticating and / or authorizing the terminal;

[0446] The process of activating the security mode on the terminal.

[0447] The first type of identifier includes end-user identifiers that cannot contain an NID. For an understanding of "end-user identifiers that cannot contain an NID," please refer to... Figure 2 The descriptions in the embodiments will not be repeated here.

[0448] The second type of identifier includes at least one of the following: terminal device identifier, Media Access Control (MAC) address, 64-bit Extended Unique Identifier (EUI-64), and terminal identifier other than the terminal user identifier.

[0449] In this embodiment of the application, when the second condition is met, the terminal uses the second type identifier to access the first network, or uses the first type identifier and the first indication information to access the first network, thereby enabling the terminal to flexibly access the public network to perform network services (such as emergency services).

[0450] Optionally, the second condition further includes at least one of the following:

[0451] The terminal needs to initiate an emergency service;

[0452] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0453] The first network supports emergency services or emergency calls;

[0454] The terminal needs to access the first network for emergency services;

[0455] The network type of the first network is a Public Land Mobile Network (PLMN).

[0456] The terminal does not have a temporary user identifier assigned by the first network;

[0457] The terminal accesses the first network using subscriber data from the home network;

[0458] The network type of the second network is an Independent Non-Public Network (SNPN).

[0459] It is understood that the terminal determines the terminal identification type (such as a first type identifier, a second type identifier, or a third type identifier) ​​for accessing the first network based on information from its home network (such as identification information and / or network type), and it can be determined that the terminal uses subscriber data from the home network to access the first network.

[0460] It is understandable that the terminal is allowed to access the first network if at least one of the second conditions mentioned above is met.

[0461] Optionally, the terminal identifier other than the terminal user identifier includes at least one of the following: terminal device identifier, MAC address, EUI-64.

[0462] Optionally, the terminal device identifier includes at least one of the following:

[0463] Permanent Equipment Identifier (PEI);

[0464] International Mobile Equipment Identity (IMEI);

[0465] International Mobile Equipment Identity Software Version (IMEISV) with software version number.

[0466] Optionally, after the step of accessing the first network using the second type identifier, the method further includes:

[0467] The terminal receives an identifier acquisition request from the first network, and the identifier type requested is the fourth type;

[0468] The terminal executes an identifier retrieval response operation based on the identifier type in the identifier retrieval request.

[0469] The identifier acquisition response operation includes at least one of the following:

[0470] Send a first type identifier to the first network;

[0471] Send a message to the first network indicating that there is no requested UE Identity (e.g., no UE Identity) or that identity acquisition has failed;

[0472] Return the first type identifier and the first indication information to the first network;

[0473] Send a third type identifier to the first network.

[0474] It should be noted that the statement "the terminal performs an identifier acquisition response operation based on the identifier type in the identifier acquisition request" can be found by referring to... Figure 5 The embodiments shown are not described in detail here.

[0475] The third type of identifier includes: an end-user identifier that can contain an NID;

[0476] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

[0477] Optionally, the identification information of the terminal's home network may also include the PLMN ID;

[0478] and / or

[0479] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[0480] In one implementation, the terminal accesses the first network using a second type identifier, including: the terminal sending the second type identifier to the first network.

[0481] In one embodiment, a terminal accesses a first network using a first type identifier and first indication information, including: the terminal sending the first type identifier and first indication information to the first network.

[0482] Through the embodiments of this application, the terminal can flexibly access the public network to perform network services (such as emergency services).

[0483] Figure 4 This is the third flowchart illustrating the network access method provided in this application embodiment. Figure 4 As shown, the network access method is executed by a terminal. The network access method includes the following steps:

[0484] Step 400: If the third condition is met, the terminal performs the fourth operation;

[0485] The fourth operation includes one of the following:

[0486] Access the first network using a third-type identifier;

[0487] Access to the first network is achieved using a first type of identifier and first indication information.

[0488] The third condition includes at least one of the following:

[0489] The PLMN ID of the network to which the terminal belongs is not unique;

[0490] The PLMN ID in the first type of identifier of the terminal is not unique;

[0491] The first network supports Network Identifier (NID);

[0492] The first network supports the Network Specific Identifier (NSI) format for end-user identifiers;

[0493] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0494] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0495] In one implementation, the terminal uses a third-type identifier to access the first network.

[0496] In another implementation, a first type identifier and first indication information are used to access the first network.

[0497] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0498] The third operation includes at least one of the following:

[0499] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0500] Select the network function (NF) of the terminal's home network for the terminal;

[0501] The process of authenticating and / or authorizing the terminal;

[0502] The process of activating the security mode on the terminal.

[0503] The first type of identifier includes: end-user identifiers that cannot contain an NID. For an understanding of "end-user identifiers that cannot contain an NID," please refer to [link / reference needed]. Figure 2 The descriptions in the embodiments will not be repeated here.

[0504] The third type of identifier includes: an end-user identifier that can contain an NID.

[0505] Optionally, the terminal user identifier that can contain NID includes at least one of the following: a permanent terminal user identifier that can contain NID, or a terminal user identifier that can contain NID;

[0506] or,

[0507] The NID end-user identifier includes at least one of the following: an NSI-related end-user identifier, or a temporary end-user identifier that can contain the NID.

[0508] In one implementation, the permanent end-user identifier that can include NID includes the end-user identifier associated with NSI.

[0509] Optionally, the NSI-related end-user identifier includes at least one of the following:

[0510] SUPI in NSI format;

[0511] SUCI in NSI format.

[0512] Optionally, the third condition further includes at least one of the following:

[0513] The terminal needs to initiate an emergency service;

[0514] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0515] The first network supports emergency services or emergency calls;

[0516] The terminal needs to access the first network for emergency services;

[0517] The network type of the first network is a Public Land Mobile Network (PLMN).

[0518] The terminal does not have a temporary user identifier assigned by the first network;

[0519] The terminal accesses the first network using subscriber data from the home network;

[0520] in,

[0521] The network type of the second network is an independent non-public network (SNPN).

[0522] Optionally, after the step of accessing the first network using a third type identifier, the method further includes:

[0523] The terminal receives an identifier acquisition request from the first network, and the identifier type requested is the fourth type;

[0524] The terminal executes an identifier retrieval response operation based on the identifier type in the identifier retrieval request;

[0525] The identifier acquisition response operation includes at least one of the following:

[0526] Send a first type identifier to the first network;

[0527] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[0528] Return the first type identifier and the first indication information to the first network;

[0529] Send a third type identifier to the first network.

[0530] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

[0531] It should be noted that the statement "the terminal performs an identifier acquisition response operation based on the identifier type in the identifier acquisition request" can be found by referring to... Figure 5 The embodiments shown are not described in detail here.

[0532] Optionally, the identification information of the terminal's home network may also include the PLMN ID;

[0533] and / or

[0534] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[0535] In one implementation, the terminal accesses the first network using a third type identifier, including: the terminal sending the third type identifier to the first network.

[0536] In one embodiment, a terminal accesses a first network using a first type identifier and first indication information, including: the terminal sending the first type identifier and first indication information to the first network.

[0537] Through the embodiments of this application, the terminal can flexibly access the public network to perform network services (such as emergency services).

[0538] Figure 5 This is the fourth flowchart illustrating the network access method provided in this application embodiment. Figure 5 As shown, the execution subject of this network access method is the terminal. The network access method includes the following steps:

[0539] Step 500: The terminal receives an identifier acquisition request from the first network, and the requested identifier type is the fourth type;

[0540] That is, the terminal receives an identifier acquisition request, and the identifier type requested in the identifier acquisition request is the fourth type.

[0541] Step 501: The terminal executes an identifier retrieval response operation based on the identifier type in the identifier retrieval request;

[0542] If the identifier type in the identifier acquisition request is type 4, the terminal executes the identifier acquisition response operation.

[0543] In one implementation, the identifier type of the request includes at least one of the following: SUCI, 5G-GUTI, IMEI, 5G-S-TMSI, IMEISV, MAC address, EUI-64, IMSI.

[0544] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID;

[0545] The first type of identifier includes: end-user identifiers that cannot contain NID;

[0546] The third type of identifier includes: an end-user identifier that can contain an NID.

[0547] In one implementation, SUCI includes SUCIs that can contain NIDs (such as SUCIs in NSI format) or SUCIs that cannot contain NIDs (such as SUCIs in NSI format).

[0548] In one implementation, the SUPI includes either a SUPI that can contain an NID (such as a SUPI in NSI format) or a SUPI that cannot contain an NID (such as a SUPI in NSI format).

[0549] In one implementation, the end-user identifier that cannot contain NID is one of the following: GUTI, 5G-GUTI, 5G-S-TMSI, S-TMSI.

[0550] For an understanding of "end-user identifiers that cannot contain NIDs", please refer to [link / reference]. Figure 2 The descriptions in the embodiments will not be repeated here. For an understanding of "end-user identifiers that can contain NIDs", please refer to... Figure 4 The descriptions in the embodiments will not be repeated here.

[0551] The identifier acquisition response operation includes at least one of the following:

[0552] Send a first type identifier to the first network;

[0553] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[0554] Return the first type identifier and the first indication information to the first network;

[0555] Send a third type identifier to the first network;

[0556] Return the first type identifier and the first indication information to the first network;

[0557] Send a third type identifier to the first network.

[0558] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0559] The third operation includes at least one of the following:

[0560] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0561] Select the network function (NF) of the terminal's home network for the terminal;

[0562] The process of authenticating and / or authorizing the terminal;

[0563] The process of activating the security mode on the terminal.

[0564] Optionally, sending the first type identifier to the first network includes:

[0565] If the fourth condition is met, a first type identifier is sent to the first network;

[0566] The fourth condition includes at least one of the following:

[0567] The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier.

[0568] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier.

[0569] The first network does not support Network Identifier (NID);

[0570] The first network does not support end-user identifiers in the Network Specific Identifier (NSI) format;

[0571] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0572] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0573] Optionally, sending information to the first network indicating that no requested terminal identifier was found or that identifier acquisition failed, or returning a first type identifier and first indication information to the first network, includes:

[0574] If the fifth condition is met, send information to the first network indicating that there is no requested terminal identifier or that identifier acquisition has failed, or return a first type identifier and first indication information to the first network.

[0575] The fifth condition includes at least one of the following:

[0576] The PLMN ID of the network to which the terminal belongs is not unique;

[0577] The PLMN ID in the first type of identifier of the terminal is not unique;

[0578] The first network does not support Network Identifier (NID);

[0579] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0580] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0581] The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

[0582] Optionally, sending the third type identifier to the first network includes:

[0583] If the sixth condition is met, a third type identifier is sent to the first network;

[0584] The sixth condition includes at least one of the following:

[0585] The PLMN ID of the network to which the terminal belongs is not unique;

[0586] The PLMN ID in the first type of identifier of the terminal is not unique;

[0587] The first network supports Network Identifier (NID);

[0588] The first network supports the Network Specific Identifier (NSI) format for end-user identifiers;

[0589] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0590] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

[0591] Optionally, at least one of the fourth, fifth, and sixth conditions further includes at least one of the following:

[0592] The terminal needs to initiate an emergency service;

[0593] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0594] The first network supports emergency services or emergency calls;

[0595] The terminal needs to access the first network for emergency services;

[0596] The network type of the first network is a Public Land Mobile Network (PLMN).

[0597] The terminal does not have a temporary user identifier assigned by the first network;

[0598] The terminal accesses the first network using subscriber data from the home network;

[0599] in,

[0600] The network type of the second network is an independent non-public network (SNPN).

[0601] In this embodiment of the application, a method is provided for a terminal to respond to an identifier acquisition request after receiving the identifier acquisition request, thereby enabling the terminal to flexibly access the public network for network services (such as emergency services).

[0602] Figure 6 This is the fifth flowchart illustrating the network access method provided in this application embodiment. Figure 6 As shown, the execution subject of this network access method is a terminal; optionally, the terminal can be a terminal device. The network access method includes the following steps:

[0603] Step 600: The terminal accesses the first network using the first type identifier and the second indication information;

[0604] The second indication information is used to indicate at least one of the following:

[0605] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0606] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0607] The first type identifier is not unique, or the first type identifier is unique;

[0608] Request to skip or not perform the third operation, or request to perform the third operation;

[0609] Request to perform the fifth operation, or request not to perform the fifth operation;

[0610] The first type of identifier includes end-user identifiers that cannot contain a Network Identifier (NID).

[0611] It should be noted that the understanding of "end-user identifiers that cannot contain NIDs" can be found by referring to [reference needed]. Figure 2 The descriptions in the embodiments will not be repeated here.

[0612] Optionally, the second indication information is implemented through a routing indicator. For example, the routing indicator is set to a second value, which indicates at least one of the following:

[0613] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0614] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0615] The first type identifier is not unique, or the first type identifier is unique;

[0616] Request to skip or not perform the third operation, or request to perform the third operation;

[0617] Request to perform the fifth operation, or request not to perform the fifth operation.

[0618] Optionally, the terminal accesses the first network using a first type identifier and second indication information, including:

[0619] If the seventh condition is met, the terminal uses the first type identifier and the second indication information to access the first network;

[0620] The seventh condition includes at least one of the following:

[0621] The terminal needs to initiate an emergency service;

[0622] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0623] The first network supports emergency services or emergency calls;

[0624] The terminal needs to access the first network for emergency services;

[0625] The network type of the first network is a Public Land Mobile Network (PLMN).

[0626] The terminal does not have a temporary user identifier assigned by the first network;

[0627] The terminal accesses the first network using subscriber data from the home network;

[0628] in,

[0629] The network type of the second network is an independent non-public network (SNPN).

[0630] In one embodiment, a terminal accesses a first network using a first type identifier and a second indication information, including: the terminal sending the first type identifier and the second indication information to the first network.

[0631] In this embodiment of the application, the terminal uses a first type identifier and a second indication information to access the first network, thereby enabling the terminal to flexibly access the public network to perform network services (such as emergency services).

[0632] Figure 7 This is a flowchart illustrating the network access method provided in an embodiment of this application. Figure 7 As shown, the execution subject of this network access method is a network-side device, including core network elements (such as one of the following: AMF, UDM). Optionally, the network-side device can be a communication device in the first network.

[0633] The network access method includes the following steps:

[0634] Step 700: The network-side device receives the first information;

[0635] Step 701: The network-side device skips or does not perform the third operation based on the first information; and / or performs the fifth operation;

[0636] The first information includes one of the following:

[0637] Second type of identifier;

[0638] First type of identification and first indication information;

[0639] First type of identification and second indication information;

[0640] The first type of identifier includes an end-user identifier that cannot contain a network identification code (NID); the second type of identifier includes at least one of the following: a terminal device identifier, a media access control (MAC) address, a 64-bit extended unique identifier (EUI-64), or a terminal identifier other than an end-user identifier.

[0641] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0642] The second indication information is used to indicate at least one of the following:

[0643] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0644] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0645] The first type identifier is not unique, or the first type identifier is unique;

[0646] Request to skip or not perform the third operation, or request to perform the third operation;

[0647] Request to perform the fifth operation, or request not to perform the fifth operation.

[0648] In one implementation, the first information is received from the terminal.

[0649] In one implementation, the network-side device is a communication device in the first network, such as a core network (CN) network, an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), etc.

[0650] The third operation includes at least one of the following:

[0651] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0652] Select the network function (NF) of the terminal's home network for the terminal;

[0653] The process of authenticating and / or authorizing the terminal;

[0654] The process of activating the security mode on the terminal.

[0655] In one embodiment, the network-side device terminal receives first information.

[0656] The fifth operation includes at least one of the following:

[0657] The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier.

[0658] When sending an identifier acquisition request to the terminal, the requested identifier type is type 5;

[0659] The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

[0660] In one embodiment, the terminal identifier type other than the first type identifier includes at least one of the following: the terminal identifier type corresponding to the second type identifier, and the terminal identifier type corresponding to the third type identifier.

[0661] It should be noted that the understanding of the relevant concepts in this embodiment can be referred to the aforementioned embodiment with the terminal as the execution subject, and will not be repeated here.

[0662] In this embodiment of the application, if the network-side device receives the first information sent by the terminal, it will skip or not perform the third operation, thereby enabling the terminal to flexibly access the public network for network services (such as emergency services).

[0663] Figure 7A The seventh flowchart illustrating the network access method provided in this application embodiment is as follows: Figure 7A As shown, the execution subject of this network access method is a network-side device, including core network elements (such as one of the following: AMF, UDM); optionally, the network-side device can be one of the following: a network-side device in a first network, a network-side device in the terminal's home network, or a network-side device in the network serving the terminal.

[0664] The network access method includes the following steps:

[0665] Step 7A0, the network-side device sends second information, which includes at least one of the following: third indication information, fourth indication information, and fifth indication information.

[0666] in,

[0667] The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID);

[0668] The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers.

[0669] The fifth instruction information is used to indicate at least one of the following:

[0670] The PLMN ID of a network is unique, or the PLMN ID of a network is not unique;

[0671] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0672] In one embodiment, the terminal obtains third indication information from a first network, the third indication information being used to indicate one of the following: the first network does not support Network Identifier (NID), or the first network supports Network Identifier (NID);

[0673] In one embodiment, the terminal obtains fourth indication information from a first network, the fourth indication information indicating one of the following: the first network supports NSI format terminal user identifiers, or the first network does not support NSI format terminal user identifiers.

[0674] In one embodiment, the terminal obtains fifth indication information from the home network, the fifth indication information being used to indicate at least one of the following:

[0675] The PLMN ID of the home network is unique, or the PLMN ID of the home network is not unique;

[0676] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0677] In one embodiment, the terminal obtains fifth indication information from the network of the serving terminal, the fifth indication information being used to indicate at least one of the following:

[0678] The PLMN ID of the home network is unique, or the PLMN ID of the home network is not unique;

[0679] The PLMN ID of the network of the service terminal is unique, or the PLMN ID of the network of the service terminal is not unique;

[0680] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0681] For example, when a terminal obtains "fifth indication information" from the network of the serving terminal, and the fifth indication information indicates one of the following: the PLMN ID of the home network is unique, or the PLMN ID of the home network is not unique;", this includes the terminal obtaining the fifth information from the home network through the network of the serving terminal.

[0682] In one implementation, when the second information is generated by the terminal's home network, the network-side device (such as UDM or HSS) in the terminal's home network sends the second information to the terminal through the network-side device (such as AMF or MME) serving the terminal.

[0683] Optionally, the network-side device sending the second information includes: sending the second information when the eighth condition is met;

[0684] The eighth condition includes at least one of the following:

[0685] The network does not support Network Identifier (NID);

[0686] The network does not support NSI format end-user identifiers;

[0687] The PLMN ID of a network is not unique;

[0688] The PLMN ID in the first type identifier of the terminal is not unique.

[0689] Optionally, if the second information is generated by the terminal's home network, the network-side device in the terminal's home network sends the second information to the terminal through the network-side device serving the terminal.

[0690] In one embodiment, the network-side device sends second information to the terminal.

[0691] Optionally, embodiments of this application also provide a network access method, including the following steps:

[0692] Step a1: The network-side device sends second information, which includes at least one of the following: third indication information, fourth indication information, and fifth indication information;

[0693] Step b1: The terminal receives the second information;

[0694] Step c1: If the terminal meets the first condition, it performs a first operation, which includes at least one of the following: using a first type identifier to access the first network, and not using a third type identifier to access the first network;

[0695] Alternatively, if the second condition is met, the terminal performs a second operation; the second operation includes one of the following: accessing the first network using a second type identifier; or accessing the first network using a first type identifier and first indication information.

[0696] Alternatively, if the third condition is met, the terminal performs a fourth operation; the fourth operation includes one of the following: accessing the first network using a third type identifier; or accessing the first network using a first type identifier and first indication information.

[0697] Alternatively, the terminal can access the first network using a first type identifier and second indication information.

[0698] Alternatively, the terminal may access the first network using a first type of identifier and second indication information;

[0699] Step d1: Upon receiving the first information, the network-side device skips or does not perform the third operation based on the first information; wherein, the first information includes: a second type identifier; a first type identifier and first indication information; a first type identifier and second indication information;

[0700] In step e1, optionally, the network-side device sends an identifier acquisition request to the terminal, and the requested identifier type is the fourth type;

[0701] Step f1: The terminal performs an identifier retrieval response operation based on the identifier type in the identifier retrieval request.

[0702] Optionally, embodiments of this application also provide a network access method, including the following steps:

[0703] Step a2: The network-side device sends an identifier acquisition request to the terminal, and the requested identifier type is the fourth type;

[0704] Step b2: The terminal executes an identifier retrieval response operation based on the identifier type in the identifier retrieval request.

[0705] For an understanding of each of the above steps, please refer to the foregoing. Figures 2-7 and Figure 7A The descriptions in the illustrated embodiments will not be repeated here.

[0706] It should be noted that the network access method provided in this application embodiment can be executed by a network access device, or by a control module within the network access device for executing the network access method. This application embodiment uses the execution of the network access method by a network access device as an example to illustrate the network access device provided in this application embodiment.

[0707] Figure 8 This is one of the structural schematic diagrams of the terminal provided in the embodiments of this application, such as... Figure 8 As shown, the terminal 800 includes:

[0708] The first execution unit 801 is used to execute a first operation when a first condition is met;

[0709] The first operation includes at least one of the following: accessing the first network using a first type identifier and accessing the first network without using a third type identifier;

[0710] In one embodiment, the first condition includes at least one of the following:

[0711] The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier.

[0712] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier.

[0713] The first network does not support Network Identifier (NID);

[0714] The first network does not support end-user identifiers in the Network Specific Identifier (NSI) format;

[0715] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0716] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

[0717] In another implementation, the first condition includes at least one of the following:

[0718] The first network does not support Network Identifier (NID);

[0719] The identification information of the terminal's home network includes a Network ID (NID), and / or the network type of the terminal's home network includes an SNPN. The first type of identifier includes terminal user identifiers that cannot contain an NID.

[0720] The third type of identifier includes an end-user identifier that can contain an NID.

[0721] Optionally, the first condition further includes at least one of the following:

[0722] The terminal needs to initiate an emergency service;

[0723] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0724] The first network supports emergency services or emergency calls;

[0725] The terminal needs to access the first network for emergency services;

[0726] The network type of the first network is a Public Land Mobile Network (PLMN).

[0727] The terminal does not have a temporary user identifier assigned by the first network;

[0728] The terminal accesses the first network using subscriber data from the home network;

[0729] The network type of the second network is an Independent Non-Public Network (SNPN).

[0730] Optionally, the end-user identifier that cannot contain NID includes at least one of the following:

[0731] International Mobile Subscriber Identity (IMSI) related to end-user identification;

[0732] It cannot contain temporary end-user identifiers with NID;

[0733] or,

[0734] The end-user identifier that cannot contain NID includes at least one of the following:

[0735] It cannot contain a permanent end-user identifier (NID);

[0736] Temporary end-user identifiers that cannot contain NIDs are not allowed.

[0737] Optionally, the end-user identifier associated with the IMSI includes at least one of the following:

[0738] IMSI;

[0739] User Permanent Identifier (SUPI) in IMSI format;

[0740] User-hidden identifier SUCI in IMSI format;

[0741] And / or,

[0742] The temporary end-user identifier that cannot contain NID includes at least one of the following:

[0743] A globally unique temporary identifier (GUTI) associated with the end-user identifier;

[0744] The terminal user identifier associated with the Temporary Mobile Subscriber Identity (S-TMSI).

[0745] Optionally, the end-user identifier associated with the GUTI includes at least one of the following:

[0746] GUTI;

[0747] 5G Globally Unique Temporary Identifier (5G-GUTI);

[0748] and / or

[0749] The S-TMSI-related end-user identifier includes at least one of the following:

[0750] S-TMSI;

[0751] 5G Temporary Mobile Subscriber Identity (5G-S-TMSI).

[0752] Optionally, the identification information of the terminal's home network may also include the PLMN ID;

[0753] and / or

[0754] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[0755] Optionally, the terminal further includes:

[0756] The first acquisition unit is used to acquire second information, the second information including at least one of the following: third indication information, fourth indication information, and fifth indication information;

[0757] in,

[0758] The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID);

[0759] The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers.

[0760] The fifth instruction information is used to indicate at least one of the following:

[0761] The PLMN ID of a network is unique, or the PLMN ID of a network is not unique;

[0762] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0763] The terminal in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip within the terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0764] The terminal provided in this application embodiment can achieve... Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0765] Figure 9 This is a second schematic diagram of the terminal structure provided in the embodiments of this application, as shown below. Figure 9 As shown, the terminal 900 includes:

[0766] The second execution unit 901 is used to execute the second operation when the second condition is met;

[0767] The second operation includes one of the following:

[0768] Access the first network using the second type of identifier;

[0769] Access to the first network using a first type of identifier and first indication information;

[0770] In one embodiment, the second condition includes at least one of the following:

[0771] The PLMN ID of the network to which the terminal belongs is not unique;

[0772] The PLMN ID in the first type of identifier of the terminal is not unique;

[0773] The first network does not support Network Identifier (NID);

[0774] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0775] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0776] The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

[0777] In another implementation, the second condition includes at least one of the following:

[0778] The first network does not support Network Identifier (NID);

[0779] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes SNPN.

[0780] The first type of identifier includes end-user identifiers that cannot contain NID;

[0781] The second type of identifier includes at least one of the following: terminal device identifier, media access control MAC address, 64-bit extended unique identifier EUI-64, and terminal identifier other than the terminal user identifier;

[0782] The first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0783] The third operation includes at least one of the following:

[0784] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0785] Select the network function (NF) of the terminal's home network for the terminal;

[0786] The process of authenticating and / or authorizing the terminal;

[0787] The process of activating the security mode on the terminal.

[0788] Optionally, the second condition further includes at least one of the following:

[0789] The terminal needs to initiate an emergency service;

[0790] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0791] The first network supports emergency services or emergency calls;

[0792] The terminal needs to access the first network for emergency services;

[0793] The network type of the first network is a Public Land Mobile Network (PLMN).

[0794] The terminal does not have a temporary user identifier assigned by the first network;

[0795] The terminal accesses the first network using subscriber data from the home network;

[0796] in,

[0797] The network type of the second network is an independent non-public network (SNPN).

[0798] Optionally, the terminal identifier other than the terminal user identifier includes at least one of the following: terminal device identifier, MAC address, EUI-64.

[0799] Optionally, the terminal device identifier includes at least one of the following:

[0800] Permanent Device Identifier (PEI);

[0801] International Mobile Equipment Identity (IMEI)

[0802] The International Mobile Equipment Identity (IMEI) with a software version number.

[0803] Optionally, the device further includes:

[0804] The first receiving unit is configured to receive an identifier from the first network to obtain a request, wherein the identifier type of the request is a fourth type;

[0805] The third execution unit is used to perform an identifier retrieval response operation based on the identifier type in the identifier retrieval request;

[0806] The identifier acquisition response operation includes at least one of the following:

[0807] Send a first type identifier to the first network;

[0808] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[0809] Return the first type identifier and the first indication information to the first network;

[0810] Send a third type identifier to the first network;

[0811] The third type of identifier includes: an end-user identifier that can contain an NID;

[0812] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

[0813] Optionally, the identification information of the terminal's home network may also include the PLMN ID;

[0814] and / or

[0815] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[0816] The terminal in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip within the terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0817] The terminal provided in this application embodiment can achieve... Figure 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0818] Figure 10 This is the third schematic diagram of the terminal structure provided in the embodiments of this application, as shown below. Figure 10 As shown, the terminal 1000 includes:

[0819] The fourth execution unit 1001 is used to execute the fourth operation when the third condition is met;

[0820] The fourth operation includes one of the following:

[0821] Access the first network using a third-type identifier;

[0822] Access to the first network using a first type of identifier and first indication information;

[0823] The third condition includes at least one of the following:

[0824] The PLMN ID of the network to which the terminal belongs is not unique;

[0825] The PLMN ID in the first type of identifier of the terminal is not unique;

[0826] The first network supports Network Identifier (NID);

[0827] The first network supports the Network Specific Identifier (NSI) format for end-user identifiers;

[0828] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0829] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0830] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0831] The third operation includes at least one of the following:

[0832] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0833] Select the network function (NF) of the terminal's home network for the terminal;

[0834] The process of authenticating and / or authorizing the terminal;

[0835] The process of activating the security mode on the terminal;

[0836] The first type of identifier includes: end-user identifiers that cannot contain NID;

[0837] The third type of identifier includes: an end-user identifier that can contain an NID.

[0838] Optionally, the third condition further includes at least one of the following:

[0839] The terminal needs to initiate an emergency service;

[0840] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0841] The first network supports emergency services or emergency calls;

[0842] The terminal needs to access the first network for emergency services;

[0843] The network type of the first network is a Public Land Mobile Network (PLMN).

[0844] The terminal does not have a temporary user identifier assigned by the first network;

[0845] The terminal accesses the first network using subscriber data from the home network;

[0846] in,

[0847] The network type of the second network is an independent non-public network (SNPN).

[0848] Optionally, the terminal user identifier that can contain NID includes at least one of the following: a permanent terminal user identifier that can contain NID, or a terminal user identifier that can contain NID;

[0849] or,

[0850] The NID end-user identifier includes at least one of the following: an NSI-related end-user identifier, or a temporary end-user identifier that can contain the NID.

[0851] Optionally, the NSI-related end-user identifier includes at least one of the following:

[0852] SUPI in NSI format;

[0853] SUCI in NSI format.

[0854] Optionally, the device further includes:

[0855] The second receiving unit is used to receive an identifier from the first network to obtain a request, wherein the identifier type of the request is a fourth type;

[0856] The fifth execution unit is used to perform an identifier retrieval response operation based on the identifier type in the identifier retrieval request;

[0857] The identifier acquisition response operation includes at least one of the following:

[0858] Send a first type identifier to the first network;

[0859] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[0860] Return the first type identifier and the first indication information to the first network;

[0861] Send a third type identifier to the first network;

[0862] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

[0863] Optionally, the identification information of the terminal's home network may also include the PLMN ID;

[0864] and / or

[0865] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[0866] The terminal in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip within the terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0867] The terminal provided in this application embodiment can achieve... Figure 4 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0868] Figure 11 This is the fourth schematic diagram of the terminal structure provided in the embodiments of this application, as shown below. Figure 11 As shown, the terminal 1100 includes:

[0869] The third receiving unit 1101 is used to receive an identifier from the first network to obtain a request, wherein the identifier type of the request is a fourth type;

[0870] The sixth execution unit 1102 is used to perform an identifier acquisition response operation according to the identifier type in the identifier acquisition request;

[0871] The identifier acquisition response operation includes at least one of the following:

[0872] Send a first type identifier to the first network;

[0873] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[0874] Return the first type identifier and the first indication information to the first network;

[0875] Send a third type identifier to the first network;

[0876] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID;

[0877] The first type of identifier includes: end-user identifiers that cannot contain NID;

[0878] The third type of identifier includes: an end-user identifier that can contain an NID;

[0879] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0880] The third operation includes at least one of the following:

[0881] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0882] Select the network function (NF) of the terminal's home network for the terminal;

[0883] The process of authenticating and / or authorizing the terminal;

[0884] The process of activating the security mode on the terminal.

[0885] Optionally, sending the first type identifier to the first network includes:

[0886] If the fourth condition is met, a first type identifier is sent to the first network;

[0887] The fourth condition includes at least one of the following:

[0888] The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier.

[0889] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier.

[0890] The first network does not support Network Identifier (NID);

[0891] The first network does not support the network-specific identifier (NSI) format for end-user identifiers;

[0892] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0893] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

[0894] Optionally, sending information to the first network indicating that no requested terminal identifier was found or that identifier acquisition failed, or returning a first type identifier and first indication information to the first network, includes:

[0895] If the fifth condition is met, send information to the first network indicating that there is no requested terminal identifier or that identifier acquisition has failed, or return a first type identifier and first indication information to the first network.

[0896] The fifth condition includes at least one of the following:

[0897] The PLMN ID of the network to which the terminal belongs is not unique;

[0898] The PLMN ID in the first type of identifier of the terminal is not unique;

[0899] The first network does not support Network Identifier (NID);

[0900] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0901] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[0902] The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

[0903] Optionally, sending the third type identifier to the first network includes:

[0904] If the sixth condition is met, a third type identifier is sent to the first network;

[0905] The sixth condition includes at least one of the following:

[0906] The PLMN ID of the network to which the terminal belongs is not unique;

[0907] The PLMN ID in the first type of identifier of the terminal is not unique;

[0908] The first network supports Network Identifier (NID);

[0909] The first network supports the Network Specific Identifier (NSI) format for end-user identifiers;

[0910] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[0911] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

[0912] Optionally, at least one of the fourth, fifth, and sixth conditions further includes at least one of the following:

[0913] The terminal needs to initiate an emergency service;

[0914] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0915] The first network supports emergency services or emergency calls;

[0916] The terminal needs to access the first network for emergency services;

[0917] The network type of the first network is a Public Land Mobile Network (PLMN).

[0918] The terminal does not have a temporary user identifier assigned by the first network;

[0919] The terminal accesses the first network using subscriber data from the home network;

[0920] in,

[0921] The network type of the second network is an independent non-public network (SNPN).

[0922] The terminal in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip within the terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0923] The terminal provided in this application embodiment can achieve... Figure 5 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0924] Figure 12 This is the fifth schematic diagram of the terminal structure provided in the embodiments of this application, as shown below. Figure 12 As shown, the terminal 1200 includes:

[0925] The seventh execution unit 1200 is used to access the first network using a first type identifier and second indication information;

[0926] The second indication information is used to indicate at least one of the following:

[0927] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0928] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0929] The first type identifier is not unique, or the first type identifier is unique;

[0930] Request to skip or not perform the third operation, or request to perform the third operation;

[0931] Request to perform the fifth operation, or request not to perform the fifth operation.

[0932] The first type of identifier includes end-user identifiers that cannot contain a Network Identifier (NID).

[0933] Optionally, accessing the first network using the first type identifier and the second indication information includes:

[0934] If the seventh condition is met, access the first network is made using the first type of identifier and the second indication information;

[0935] The seventh condition includes at least one of the following:

[0936] The terminal needs to initiate an emergency service;

[0937] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[0938] The first network supports emergency services or emergency calls;

[0939] The terminal needs to access the first network for emergency services;

[0940] The network type of the first network is a Public Land Mobile Network (PLMN).

[0941] The terminal does not have a temporary user identifier assigned by the first network;

[0942] The terminal accesses the first network using subscriber data from the home network;

[0943] in,

[0944] The network type of the second network is an independent non-public network (SNPN).

[0945] The terminal in this application embodiment can be a device, a device or electronic device with an operating system, or a component, integrated circuit, or chip within the terminal. The device or electronic device can be a mobile terminal or a non-mobile terminal. For example, a mobile terminal can include, but is not limited to, the types of terminals 11 listed above, while a non-mobile terminal can be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not impose specific limitations.

[0946] The terminal provided in this application embodiment can achieve... Figure 6 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0947] Figure 13 This is one of the structural schematic diagrams of the network-side device provided in the embodiments of this application, such as... Figure 13 As shown, the network-side device 1300 includes:

[0948] The fourth receiving unit 1301 is used to receive the first information;

[0949] The eighth execution unit 1302 is used to skip or not perform the third operation based on the first information;

[0950] The first information includes one of the following:

[0951] Second type of identifier;

[0952] First type of identification and first indication information;

[0953] First type of identification and second indication information;

[0954] The first type of identifier includes an end-user identifier that cannot contain a network identification code (NID); the second type of identifier includes at least one of the following: a terminal device identifier, a media access control (MAC) address, a 64-bit extended unique identifier (EUI-64), or a terminal identifier other than an end-user identifier.

[0955] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[0956] The second indication information is used to indicate at least one of the following:

[0957] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[0958] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[0959] The first type identifier is not unique, or the first type identifier is unique;

[0960] Request to skip or not perform the third operation, or request to perform the third operation;

[0961] Request to perform the fifth operation, or request not to perform the fifth operation.

[0962] The third operation includes at least one of the following:

[0963] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[0964] Select the network function (NF) of the terminal's home network for the terminal;

[0965] The process of authenticating and / or authorizing the terminal;

[0966] The process of activating the security mode on the terminal.

[0967] Figure 13A This is a second schematic diagram of the network-side device provided in the embodiments of this application, as shown below. Figure 13A As shown, the network-side device 13A0 includes:

[0968] The first transmitting unit 13A1 is used to transmit second information, the second information including at least one of the following: third indication information, fourth indication information, and fifth indication information;

[0969] in,

[0970] The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID);

[0971] The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers.

[0972] The fifth instruction information is used to indicate at least one of the following:

[0973] The PLMN ID of a network is unique, or the PLMN ID of a network is not unique;

[0974] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[0975] Optionally, the first transmitting unit is specifically used for:

[0976] If the eighth condition is met, the network-side device sends the second information;

[0977] The eighth condition includes at least one of the following:

[0978] The network does not support Network Identifier (NID);

[0979] The network does not support NSI format end-user identifiers;

[0980] The PLMN ID of a network is not unique;

[0981] The PLMN ID in the first type identifier of the terminal is not unique.

[0982] Optionally, if the second information is generated by the terminal's home network, the network-side device in the terminal's home network sends the second information to the terminal through the network-side device serving the terminal.

[0983] Optional, such as Figure 14 As shown, this application embodiment also provides a communication device 1400, including a processor 1401, a memory 1402, and a program or instructions stored in the memory 1402 and executable on the processor 1401. For example, when the communication device 1400 is a terminal, the program or instructions executed by the processor 1401 implement the various processes of the above-described network access method embodiment and achieve the same technical effect. When the communication device 1400 is a network-side device, the program or instructions executed by the processor 1401 implement the various processes of the above-described network access method embodiment and achieve the same technical effect; to avoid repetition, further details are omitted here.

[0984] This application also provides a terminal, including a processor and a communication interface, wherein the processor is used to perform a first operation when a first condition is met.

[0985] Alternatively, the processor may be configured to perform a second operation if the second condition is met.

[0986] Alternatively, the processor may perform a fourth operation if the third condition is met;

[0987] Alternatively, the communication interface is used to receive an identifier acquisition request from the first network, wherein the requested identifier type is a fourth type; the processor is used to execute an identifier acquisition response operation according to the identifier type in the identifier acquisition request.

[0988] Alternatively, the processor may be used to access the first network using a first type identifier and second indication information.

[0989] This terminal embodiment corresponds to the aforementioned terminal-side method embodiment. All implementation processes and methods of the aforementioned method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 15 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0990] The terminal 1500 includes, but is not limited to, at least some of the following components: radio frequency unit 1501, network module 1502, audio output unit 1503, input unit 1504, sensor 1505, display unit 1506, user input unit 1507, interface unit 1508, memory 1509, and processor 1510.

[0991] Those skilled in the art will understand that the terminal 1500 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1510 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 15 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0992] It should be understood that, in this embodiment, the input unit 1504 may include a graphics processing unit (GPU) 15041 and a microphone 15042. The GPU 15041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1506 may include a display panel 15061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1507 includes a touch panel 15071 and other input devices 15072. The touch panel 15071 is also called a touch screen. The touch panel 15071 may include a touch detection device and a touch controller. Other input devices 15072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0993] In this embodiment, the radio frequency unit 1501 receives downlink data from the network-side device and processes it for the processor 1510; additionally, it sends uplink data to the network-side device. Typically, the radio frequency unit 1501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0994] The memory 1509 can be used to store software programs or instructions and various data. The memory 1509 may primarily include a program or instruction storage area and a data storage area. The program or instruction storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1509 may include high-speed random access memory and non-volatile memory, which may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. For example, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0995] Processor 1510 may include one or more processing units; optionally, processor 1510 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications or instructions, and the modem processor mainly handles wireless communication, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 1510.

[0996] The processor 1510 is used to perform a first operation when the first condition is met;

[0997] The first operation includes at least one of the following: accessing the first network using a first type identifier and accessing the first network without using a third type identifier;

[0998] The first condition includes at least one of the following:

[0999] The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier.

[1000] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier.

[1001] The first network does not support Network Identifier (NID);

[1002] The first network does not support end-user identifiers in the Network Specific Identifier (NSI) format;

[1003] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[1004] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[1005] The first type of identifier includes end-user identifiers that cannot contain NID;

[1006] The third type of identifier includes an end-user identifier that can contain an NID.

[1007] Optionally, the first condition further includes at least one of the following:

[1008] The terminal needs to initiate an emergency service;

[1009] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[1010] The first network supports emergency services or emergency calls;

[1011] The terminal needs to access the first network for emergency services;

[1012] The network type of the first network is a Public Land Mobile Network (PLMN).

[1013] The terminal does not have a temporary user identifier assigned by the first network;

[1014] The terminal accesses the first network using subscriber data from the home network;

[1015] The network type of the second network is an Independent Non-Public Network (SNPN).

[1016] Optionally, the end-user identifier that cannot contain NID includes at least one of the following:

[1017] International Mobile Subscriber Identity (IMSI) related to end-user identification;

[1018] It cannot contain temporary end-user identifiers with NID;

[1019] or,

[1020] The end-user identifier that cannot contain NID includes at least one of the following:

[1021] It cannot contain a permanent end-user identifier (NID);

[1022] Temporary end-user identifiers that cannot contain NIDs are not allowed.

[1023] Optionally, the end-user identifier associated with the IMSI includes at least one of the following:

[1024] IMSI;

[1025] User Permanent Identifier (SUPI) in IMSI format;

[1026] User-hidden identifier SUCI in IMSI format;

[1027] And / or,

[1028] The temporary end-user identifier that cannot contain NID includes at least one of the following:

[1029] A globally unique temporary identifier (GUTI) associated with the end-user identifier;

[1030] The terminal user identifier associated with the Temporary Mobile Subscriber Identity (S-TMSI).

[1031] Optionally, the end-user identifier associated with the GUTI includes at least one of the following:

[1032] GUTI;

[1033] 5G Globally Unique Temporary Identifier (5G-GUTI);

[1034] and / or

[1035] The S-TMSI-related end-user identifier includes at least one of the following:

[1036] S-TMSI;

[1037] 5G Temporary Mobile Subscriber Identity (5G-S-TMSI).

[1038] Optionally, the identification information of the terminal's home network may also include the PLMN ID;

[1039] and / or

[1040] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[1041] Optionally, the processor 1510 is further configured to:

[1042] Obtain second information, which includes at least one of the following: third instruction information, fourth instruction information, and fifth instruction information.

[1043] in,

[1044] The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID);

[1045] The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers.

[1046] The fifth instruction information is used to indicate at least one of the following:

[1047] The PLMN ID of a network is unique, or the PLMN ID of a network is not unique;

[1048] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

[1049] In some alternative embodiments, processor 1510 is configured to:

[1050] If the second condition is met, the terminal performs the second operation;

[1051] The second operation includes one of the following:

[1052] Access the first network using the second type of identifier;

[1053] Access to the first network using a first type of identifier and first indication information;

[1054] The second condition includes at least one of the following:

[1055] The PLMN ID of the network to which the terminal belongs is not unique;

[1056] The PLMN ID in the first type of identifier of the terminal is not unique;

[1057] The first network does not support Network Identifier (NID);

[1058] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[1059] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[1060] The first network does not support the network-specific identifier (NSI) format for end-user identifiers;

[1061] The first type of identifier includes end-user identifiers that cannot contain NID;

[1062] The second type of identifier includes at least one of the following: terminal device identifier, media access control MAC address, 64-bit extended unique identifier EUI-64, and terminal identifier other than the terminal user identifier;

[1063] The first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[1064] The third operation includes at least one of the following:

[1065] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[1066] Select the network function (NF) of the terminal's home network for the terminal;

[1067] The process of authenticating and / or authorizing the terminal;

[1068] The process of activating the security mode on the terminal.

[1069] Optionally, the second condition further includes at least one of the following:

[1070] The terminal needs to initiate an emergency service;

[1071] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[1072] The first network supports emergency services or emergency calls;

[1073] The terminal needs to access the first network for emergency services;

[1074] The network type of the first network is a Public Land Mobile Network (PLMN).

[1075] The terminal does not have a temporary user identifier assigned by the first network;

[1076] The terminal accesses the first network using subscriber data from the home network;

[1077] in,

[1078] The network type of the second network is an independent non-public network (SNPN).

[1079] Optionally, the terminal identifier other than the terminal user identifier includes at least one of the following: terminal device identifier, MAC address, EUI-64.

[1080] Optionally, the terminal device identifier includes at least one of the following:

[1081] Permanent Device Identifier (PEI);

[1082] International Mobile Equipment Identity (IMEI)

[1083] The International Mobile Equipment Identity (IMEI) with a software version number.

[1084] Optionally, the radio frequency unit 1401 is configured to: receive an identifier acquisition request from the first network, wherein the requested identifier type is a fourth type;

[1085] The processor 1510 is further configured to: perform an identifier acquisition response operation according to the identifier type in the identifier acquisition request;

[1086] The identifier acquisition response operation includes at least one of the following:

[1087] Send a first type identifier to the first network;

[1088] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[1089] Return the first type identifier and the first indication information to the first network;

[1090] Send a third type identifier to the first network;

[1091] The third type of identifier includes: an end-user identifier that can contain an NID;

[1092] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

[1093] Alternatively, the identification information of the terminal's home network may also include the PLMN ID;

[1094] and / or

[1095] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[1096] In some alternative embodiments, the processor 1410 is used for:

[1097] If the third condition is met, the terminal will perform the fourth operation;

[1098] The fourth operation includes one of the following:

[1099] Access the first network using a third-type identifier;

[1100] Access to the first network using a first type of identifier and first indication information;

[1101] The third condition includes at least one of the following:

[1102] The PLMN ID of the network to which the terminal belongs is not unique;

[1103] The PLMN ID in the first type of identifier of the terminal is not unique;

[1104] The first network supports Network Identifier (NID);

[1105] The first network supports the Network Specific Identifier (NSI) format for end-user identifiers;

[1106] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[1107] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[1108] The first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[1109] The third operation includes at least one of the following:

[1110] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[1111] Select the network function (NF) of the terminal's home network for the terminal;

[1112] The process of authenticating and / or authorizing the terminal;

[1113] The process of activating the security mode on the terminal;

[1114] The first type of identifier includes: end-user identifiers that cannot contain NID;

[1115] The third type of identifier includes: an end-user identifier that can contain an NID.

[1116] Optionally, the third condition further includes at least one of the following:

[1117] The terminal needs to initiate an emergency service;

[1118] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[1119] The first network supports emergency services or emergency calls;

[1120] The terminal needs to access the first network for emergency services;

[1121] The network type of the first network is a Public Land Mobile Network (PLMN).

[1122] The terminal does not have a temporary user identifier assigned by the first network;

[1123] The terminal accesses the first network using subscriber data from the home network;

[1124] in,

[1125] The network type of the second network is an independent non-public network (SNPN).

[1126] Optionally, the terminal user identifier that can contain NID includes at least one of the following: a permanent terminal user identifier that can contain NID, or a terminal user identifier that can contain NID;

[1127] or,

[1128] The NID end-user identifier includes at least one of the following: an NSI-related end-user identifier, or a temporary end-user identifier that can contain the NID.

[1129] Optionally, the NSI-related end-user identifier includes at least one of the following:

[1130] SUPI in NSI format;

[1131] SUCI in NSI format.

[1132] Optionally, the radio frequency unit 1501 is further configured to: receive an identifier acquisition request from the first network, wherein the requested identifier type is a fourth type;

[1133] Processor 1510 is further configured to: perform an identifier acquisition response operation based on the identifier type in the identifier acquisition request;

[1134] The identifier acquisition response operation includes at least one of the following:

[1135] Send a first type identifier to the first network;

[1136] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[1137] Return the first type identifier and the first indication information to the first network;

[1138] Send a third type identifier to the first network;

[1139] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

[1140] Optionally, the identification information of the terminal's home network may also include the PLMN ID;

[1141] and / or

[1142] The identification information of the network that assigns the first type of identifier to the terminal also includes the PLMN ID.

[1143] In some alternative embodiments, the radio frequency unit 1501 is configured to: receive an identifier acquisition request from a first network, wherein the requested identifier type is a fourth type;

[1144] Processor 1510 is configured to: perform an identifier retrieval response operation based on the identifier type in the identifier retrieval request;

[1145] The identifier acquisition response operation includes at least one of the following:

[1146] Send a first type identifier to the first network;

[1147] Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed;

[1148] Return the first type identifier and the first indication information to the first network;

[1149] Send a third type identifier to the first network;

[1150] The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID;

[1151] The first type of identifier includes: end-user identifiers that cannot contain NID;

[1152] The third type of identifier includes: an end-user identifier that can contain an NID;

[1153] Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation;

[1154] The third operation includes at least one of the following:

[1155] Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal;

[1156] Select the network function (NF) of the terminal's home network for the terminal;

[1157] The process of authenticating and / or authorizing the terminal;

[1158] The process of activating the security mode on the terminal.

[1159] Optionally, sending the first type identifier to the first network includes:

[1160] If the fourth condition is met, a first type identifier is sent to the first network;

[1161] The fourth condition includes at least one of the following:

[1162] The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier.

[1163] The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier.

[1164] The first network does not support Network Identifier (NID);

[1165] The first network does not support the network-specific identifier (NSI) format for end-user identifiers;

[1166] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[1167] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

[1168] Optionally, sending information to the first network indicating that no requested terminal identifier was found or that identifier acquisition failed, or returning a first type identifier and first indication information to the first network, includes:

[1169] If the fifth condition is met, send information to the first network indicating that there is no requested terminal identifier or that identifier acquisition has failed, or return a first type identifier and first indication information to the first network.

[1170] The fifth condition includes at least one of the following:

[1171] The PLMN ID of the network to which the terminal belongs is not unique;

[1172] The PLMN ID in the first type of identifier of the terminal is not unique;

[1173] The first network does not support Network Identifier (NID);

[1174] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[1175] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN);

[1176] The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

[1177] Optionally, sending the third type identifier to the first network includes:

[1178] If the sixth condition is met, a third type identifier is sent to the first network;

[1179] The sixth condition includes at least one of the following:

[1180] The PLMN ID of the network to which the terminal belongs is not unique;

[1181] The PLMN ID in the first type of identifier of the terminal is not unique;

[1182] The first network supports Network Identifier (NID);

[1183] The first network supports the Network Specific Identifier (NSI) format for end-user identifiers;

[1184] The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN);

[1185] The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

[1186] Optionally, at least one of the fourth, fifth, and sixth conditions further includes at least one of the following:

[1187] The terminal needs to initiate an emergency service;

[1188] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[1189] The first network supports emergency services or emergency calls;

[1190] The terminal needs to access the first network for emergency services;

[1191] The network type of the first network is a Public Land Mobile Network (PLMN).

[1192] The terminal does not have a temporary user identifier assigned by the first network;

[1193] The terminal accesses the first network using subscriber data from the home network;

[1194] in,

[1195] The network type of the second network is an independent non-public network (SNPN).

[1196] In some alternative embodiments, the processor 1510 is used for:

[1197] Access to the first network is achieved using a first type of identifier and a second indication information;

[1198] The second indication information is used to indicate at least one of the following:

[1199] The PLMN ID of the first type of identifier is not unique, or the PLMN ID of the first type of identifier is unique;

[1200] The network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN.

[1201] The first type identifier is not unique, or the first type identifier is unique;

[1202] Request to skip or not perform the third operation, or request to perform the third operation;

[1203] Request to perform the fifth operation, or request not to perform the fifth operation.

[1204] The first type of identifier includes end-user identifiers that cannot contain a Network Identifier (NID).

[1205] Optionally, the processor 1510 is specifically used for:

[1206] If the seventh condition is met, the terminal uses the first type identifier and the second indication information to access the first network;

[1207] The seventh condition includes at least one of the following:

[1208] The terminal needs to initiate an emergency service;

[1209] The terminal has no cell in its home network that it can access, or no cell in a second network that it can access.

[1210] The first network supports emergency services or emergency calls;

[1211] The terminal needs to access the first network for emergency services;

[1212] The network type of the first network is a Public Land Mobile Network (PLMN).

[1213] The terminal does not have a temporary user identifier assigned by the first network;

[1214] The terminal accesses the first network using subscriber data from the home network;

[1215] in,

[1216] The network type of the second network is an independent non-public network (SNPN).

[1217] This application embodiment also provides a network-side device, including a processor and a communication interface. The communication interface is used to receive first information; the processor is used to skip or not perform a third operation according to the first information; wherein, the first information includes one of the following: a second type identifier; a first type identifier and first indication information; a first type identifier and second indication information; wherein, the first type identifier includes a terminal user identifier that cannot contain a network identification code (NID); the second type identifier includes at least one of the following: a terminal device identifier, a media access control (MAC) address, a 64-bit extended unique identifier (EUI-64), or a terminal identifier other than a terminal user identifier; wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); a request to skip or not perform the third operation; a request to perform a fifth operation; wherein, the second indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique, or, the PLMN of the first type identifier... The ID is unique; the network type of the terminal's home network is Independent Non-Public Network (SNPN), or the network type of the terminal's home network is a network type other than SNPN; the first type identifier is not unique, or the first type identifier is unique; request to skip or not perform the third operation, or request to perform the third operation; request to perform the fifth operation, or request not to perform the fifth operation;

[1218] The third operation includes at least one of the following: obtaining the first type identifier of the terminal from the terminal, or sending an identifier acquisition request to the terminal; selecting the network function (NF) of the terminal's home network for the terminal; performing an authentication and / or authorization process for the terminal; and activating the security mode of the terminal.

[1219] This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiment can be applied to this network-side device embodiment and can achieve the same technical effect.

[1220] Specifically, embodiments of this application also provide a network-side device. For example... Figure 16 As shown, the network device 1600 includes: a processor 1601, a transceiver 1602, a memory 1603, a user interface 1604, and a bus interface, wherein:

[1221] In this embodiment of the invention, the network-side device 1600 further includes: a computer program stored on a memory 1603 and executable on a processor 1601, the computer program being executed by the processor 1601. Figure 13 or Figure 13A The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[1222] exist Figure 16 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, such as one or more processors represented by processor 1601 and memory represented by memory 1603. The bus architecture can also link together various other circuits, such as peripheral devices, 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 an interface. The transceiver 1602 can be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium. For different user equipment, the user interface 1604 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[1223] The processor 1601 is responsible for managing the bus architecture and general processing, while the memory 1603 can store the data used by the processor 1601 when performing operations.

[1224] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described network access method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[1225] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[1226] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above network access method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[1227] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[1228] This application also provides a computer program / program product, which is stored in a non-transient storage medium. The program / program product is executed by at least one processor to implement the various processes of the above-described system message reporting method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[1229] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[1230] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[1231] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A network access method, characterized in that, include: If the first condition is met, the terminal performs the first operation; The first operation includes at least one of the following: accessing the first network using a first type identifier and accessing the first network without using a third type identifier; the first type identifier includes a terminal user identifier that cannot contain an NID; the third type identifier includes a terminal user identifier that can contain an NID. The first condition includes at least one of the following: The terminal’s home network satisfies the ninth condition, and the first network satisfies the tenth condition; The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier. The ninth condition includes at least one of the following: The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier. The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The tenth condition includes at least one of the following: The first network does not support Network Identifier (NID); The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

2. The network access method according to claim 1, characterized in that, The first condition also includes at least one of the following: The terminal needs to initiate an emergency service; The terminal has no cell in its home network that it can access, or no cell in a second network that it can access. The first network supports emergency services or emergency calls; The terminal needs to access the first network for emergency services; The network type of the first network is a Public Land Mobile Network (PLMN). The terminal does not have a temporary user identifier assigned by the first network; The terminal accesses the first network using subscriber data from the home network; The network type of the second network is an Independent Non-Public Network (SNPN).

3. The network access method according to claim 1 or 2, characterized in that, The end-user identifier that cannot contain NID includes at least one of the following: International Mobile Subscriber Identity (IMSI) related to end-user identification; It cannot contain temporary end-user identifiers with NID; or, The end-user identifier that cannot contain NID includes at least one of the following: It cannot contain a permanent end-user identifier (NID); Temporary end-user identifiers that cannot contain NIDs are not allowed.

4. The network access method according to claim 3, characterized in that, The IMSI-related end-user identifier includes at least one of the following: IMSI; User Permanent Identifier (SUPI) in IMSI format; User-hidden identifier SUCI in IMSI format; And / or, The temporary end-user identifier that cannot contain NID includes at least one of the following: A globally unique temporary identifier (GUTI) associated with the end-user identifier; The terminal user identifier associated with the Temporary Mobile Subscriber Identity (S-TMSI).

5. The network access method according to claim 4, characterized in that, The GUTI-related end-user identifier includes at least one of the following: GUTI; 5G Globally Unique Temporary Identifier (5G-GUTI); and / or The S-TMSI-related end-user identifier includes at least one of the following: S-TMSI; 5G Temporary Mobile Subscriber Identity (5G-S-TMSI).

6. The network access method according to claim 1, characterized in that, The identification information of the terminal's home network also includes the PLMN ID.

7. The network access method according to claim 1, characterized in that, The method further includes: The terminal acquires second information, which includes at least one of the following: third indication information, fourth indication information, and fifth indication information; in, The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID); The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers. The fifth instruction information is used to indicate at least one of the following: The PLMN ID of a network is unique, or the PLMN ID of a network is not unique; The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

8. The network access method according to claim 1, characterized in that, The terminal user identifier that can contain NID includes at least one of the following: a permanent terminal user identifier that can contain NID, or a terminal user identifier that can contain NID; or, The NID end-user identifier includes at least one of the following: an NSI-related end-user identifier, or a temporary end-user identifier that can contain the NID.

9. The network access method according to claim 8, characterized in that, The NSI-related end-user identifier includes at least one of the following: SUPI in NSI format; SUCI in NSI format.

10. A network access method, characterized in that, include: If the second condition is met, the terminal performs the second operation; The second operation includes one of the following: Access to the first network is made using a second type of identifier; the second type of identifier includes at least one of the following: terminal device identifier, media access control MAC address, 64-bit extended unique identifier EUI-64, and terminal identifier other than terminal user identifier; Access to the first network is achieved using a first type identifier and first indication information; the first type identifier includes a terminal user identifier that cannot contain an NID; The second condition includes at least one of the following: The terminal’s home network satisfies the eleventh condition, and the first network satisfies the twelfth condition; The PLMN ID in the first type of identifier of the terminal is not unique; The eleventh condition includes at least one of the following: The PLMN ID of the network to which the terminal belongs is not unique; The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN); The twelfth condition includes at least one of the following: The first network does not support Network Identifier (NID); The first network does not support the network-specific identifier (NSI) format for end-user identifiers; Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation; The third operation includes at least one of the following: Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal; Select the network function (NF) of the terminal's home network for the terminal; The process of authenticating and / or authorizing the terminal; The process of activating the security mode on the terminal; The fifth operation includes at least one of the following: The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier. When sending an identifier acquisition request to the terminal, the requested identifier type is type 5; The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

11. The network access method according to claim 10, characterized in that, The second condition also includes at least one of the following: The terminal needs to initiate an emergency service; The terminal has no cell in its home network that it can access, or no cell in a second network that it can access. The first network supports emergency services or emergency calls; The terminal needs to access the first network for emergency services; The network type of the first network is a Public Land Mobile Network (PLMN). The terminal does not have a temporary user identifier assigned by the first network; The terminal accesses the first network using subscriber data from the home network; in, The network type of the second network is an independent non-public network (SNPN).

12. The network access method according to claim 10, characterized in that, The terminal identifier, in addition to the terminal user identifier, includes at least one of the following: terminal device identifier, MAC address, EUI-64.

13. The network access method according to claim 10 or 12, characterized in that, The terminal device identifier includes at least one of the following: Permanent Device Identifier (PEI); International Mobile Equipment Identity (IMEI) The International Mobile Equipment Identity (IMEI) with a software version number.

14. The network access method according to claim 10, characterized in that, After the step of accessing the first network using the second type identifier, the method further includes: The terminal receives an identifier acquisition request from the first network, and the identifier type requested is the fourth type; The terminal executes an identifier retrieval response operation based on the identifier type in the identifier retrieval request; The identifier acquisition response operation includes at least one of the following: Send a first type identifier to the first network; Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed; Return the first type identifier and the first indication information to the first network; Send a third type identifier to the first network; The third type of identifier includes: an end-user identifier that can contain an NID; The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

15. The network access method according to claim 10, characterized in that, The identification information of the terminal's home network also includes the PLMN ID.

16. A network access method, characterized in that, include: If the third condition is met, the terminal will perform the fourth operation; The fourth operation includes one of the following: Access to the first network is made using a third type of identifier; the third type of identifier includes: a terminal user identifier that can contain an NID; Access to the first network is achieved using a first type identifier and first indication information; the first type identifier includes: a terminal user identifier that cannot contain an NID; The third condition includes at least one of the following: The terminal’s home network satisfies the thirteenth condition, and the first network satisfies the fourteenth condition; The PLMN ID in the first type of identifier of the terminal is not unique; The thirteenth condition includes at least one of the following: The PLMN ID of the network to which the terminal belongs is not unique; The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The fourteenth condition includes at least one of the following: The first network supports Network Identifier (NID); The first network supports the Network Specific Identifier (NSI) format for end-user identifiers; Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation; The third operation includes at least one of the following: Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal; Select the network function (NF) of the terminal's home network for the terminal; The process of authenticating and / or authorizing the terminal; The process of activating the security mode on the terminal; The fifth operation includes at least one of the following: The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier. When sending an identifier acquisition request to the terminal, the requested identifier type is type 5; The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

17. The network access method according to claim 16, characterized in that, The third condition also includes at least one of the following: The terminal needs to initiate an emergency service; The terminal has no cell in its home network that it can access, or no cell in a second network that it can access. The first network supports emergency services or emergency calls; The terminal needs to access the first network for emergency services; The network type of the first network is a Public Land Mobile Network (PLMN). The terminal does not have a temporary user identifier assigned by the first network; The terminal accesses the first network using subscriber data from the home network; in, The network type of the second network is an independent non-public network (SNPN).

18. The network access method according to claim 16, characterized in that, The terminal user identifier that can contain NID includes at least one of the following: a permanent terminal user identifier that can contain NID, or a terminal user identifier that can contain NID; or, The NID end-user identifier includes at least one of the following: an NSI-related end-user identifier, or a temporary end-user identifier that can contain the NID.

19. The network access method according to claim 18, characterized in that, The NSI-related end-user identifier includes at least one of the following: SUPI in NSI format; SUCI in NSI format.

20. The network access method according to claim 16, characterized in that, After the step of accessing the first network using a third-type identifier, the method further includes: The terminal receives an identifier acquisition request from the first network, and the identifier type requested is the fourth type; The terminal executes an identifier retrieval response operation based on the identifier type in the identifier retrieval request; The identifier acquisition response operation includes at least one of the following: Send a first type identifier to the first network; Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed; Return the first type identifier and the first indication information to the first network; Send a third type identifier to the first network; The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

21. The network access method according to claim 16, characterized in that, The identification information of the terminal's home network also includes the PLMN ID.

22. A network access method, characterized in that, include: The terminal receives an identifier acquisition request from the first network, and the requested identifier type is the fourth type; The terminal executes an identifier retrieval response operation based on the identifier type in the identifier retrieval request; The identifier acquisition response operation includes at least one of the following: Send a first type identifier to the first network; Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed; Return the first type identifier and the first indication information to the first network; Send a third type identifier to the first network; The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID; The first type of identifier includes: end-user identifiers that cannot contain NID; The third type of identifier includes: an end-user identifier that can contain an NID; Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation; The third operation includes at least one of the following: Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal; Select the network function (NF) of the terminal's home network for the terminal; The process of authenticating and / or authorizing the terminal; The process of activating the security mode on the terminal; The fifth operation includes at least one of the following: The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier. When sending an identifier acquisition request to the terminal, the requested identifier type is type 5; The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

23. The network access method according to claim 22, characterized in that, Sending the first type identifier to the first network includes: If the fourth condition is met, a first type identifier is sent to the first network; The fourth condition includes at least one of the following: The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier. The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier. The first network does not support Network Identifier (NID); The first network does not support the network-specific identifier (NSI) format for end-user identifiers; The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

24. The network access method according to claim 22, characterized in that, The step of sending information to the first network indicating that no requested terminal identifier was found or that identifier acquisition failed, or returning a first type identifier and first indication information to the first network, includes: If the fifth condition is met, send information to the first network indicating that there is no requested terminal identifier or that identifier acquisition has failed, or return a first type identifier and first indication information to the first network. The fifth condition includes at least one of the following: The PLMN ID of the network to which the terminal belongs is not unique; The PLMN ID in the first type of identifier of the terminal is not unique; The first network does not support Network Identifier (NID); The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN); The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

25. The network access method according to claim 22, characterized in that, Sending the third type identifier to the first network includes: If the sixth condition is met, a third type identifier is sent to the first network; The sixth condition includes at least one of the following: The PLMN ID of the network to which the terminal belongs is not unique; The PLMN ID in the first type of identifier of the terminal is not unique; The first network supports Network Identifier (NID); The first network supports the Network Specific Identifier (NSI) format for end-user identifiers; The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

26. The network access method according to claim 23, 24, or 25, characterized in that, At least one of the fourth, fifth, and sixth conditions, and also at least one of the following: The terminal needs to initiate an emergency service; The terminal has no cell in its home network that it can access, or no cell in a second network that it can access. The first network supports emergency services or emergency calls; The terminal needs to access the first network for emergency services; The network type of the first network is a Public Land Mobile Network (PLMN). The terminal does not have a temporary user identifier assigned by the first network; The terminal accesses the first network using subscriber data from the home network; in, The network type of the second network is an independent non-public network (SNPN).

27. A terminal, characterized in that, include: The first execution unit is configured to perform a first operation when a first condition is met; The first operation includes at least one of the following: accessing the first network using a first type identifier and accessing the first network without using a third type identifier; the first type identifier includes a terminal user identifier that cannot contain an NID; the third type identifier includes a terminal user identifier that can contain an NID. The first condition includes at least one of the following: The terminal’s home network satisfies the ninth condition, and the first network satisfies the tenth condition; The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier. The ninth condition includes at least one of the following: The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier. The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The tenth condition includes at least one of the following: The first network does not support Network Identifier (NID); The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

28. The terminal according to claim 27, characterized in that, Also includes: The first acquisition unit is used to acquire second information, the second information including at least one of the following: third indication information, fourth indication information, and fifth indication information; in, The third indication information is used to indicate one of the following: the network supports Network Identifier (NID), or the network does not support Network Identifier (NID); The fourth indication information is used to indicate one of the following: the network supports NSI format terminal user identifiers, or the network does not support NSI format terminal user identifiers. The fifth instruction information is used to indicate at least one of the following: The PLMN ID of a network is unique, or the PLMN ID of a network is not unique; The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique.

29. A terminal, characterized in that, include: The second execution unit is used to execute the second operation when the second condition is met; The second operation includes one of the following: Access to the first network is made using a second type of identifier; the second type of identifier includes at least one of the following: terminal device identifier, media access control MAC address, 64-bit extended unique identifier EUI-64, and terminal identifier other than terminal user identifier; Access to the first network is achieved using a first type identifier and first indication information; the first type identifier includes a terminal user identifier that cannot contain an NID; The second condition includes at least one of the following: The terminal’s home network satisfies the eleventh condition, and the first network satisfies the twelfth condition; The PLMN ID in the first type of identifier of the terminal is not unique; The eleventh condition includes at least one of the following: The PLMN ID of the network to which the terminal belongs is not unique; The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The twelfth condition includes at least one of the following: The first network does not support Network Identifier (NID); The first network does not support the network-specific identifier (NSI) format for end-user identifiers; Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation; The third operation includes at least one of the following: Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal; Select the network function (NF) of the terminal's home network for the terminal; The process of authenticating and / or authorizing the terminal; The process of activating the security mode on the terminal; The fifth operation includes at least one of the following: The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier. When sending an identifier acquisition request to the terminal, the requested identifier type is type 5; The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

30. The terminal according to claim 29, characterized in that, The terminal also includes: The first receiving unit is configured to receive an identifier from the first network to obtain a request, wherein the identifier type of the request is a fourth type; The third execution unit is used to perform an identifier retrieval response operation based on the identifier type in the identifier retrieval request; The identifier acquisition response operation includes at least one of the following: Send a first type identifier to the first network; Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed; Return the first type identifier and the first indication information to the first network; Send a third type identifier to the first network; The third type of identifier includes: an end-user identifier that can contain an NID; The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

31. A terminal, characterized in that, include: The fourth execution unit is used to execute the fourth operation when the third condition is met; The fourth operation includes one of the following: Access to the first network is made using a third type of identifier; the third type of identifier includes: a terminal user identifier that can contain an NID; Access to the first network is achieved using a first type identifier and first indication information; the first type identifier includes: a terminal user identifier that cannot contain an NID; The third condition includes at least one of the following: The terminal’s home network satisfies the thirteenth condition, and the first network satisfies the fourteenth condition; The PLMN ID in the first type of identifier of the terminal is not unique; The thirteenth condition includes at least one of the following: The PLMN ID of the network to which the terminal belongs is not unique; The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The fourteenth condition includes at least one of the following: The first network supports Network Identifier (NID); The first network supports the Network Specific Identifier (NSI) format for end-user identifiers; Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation; The third operation includes at least one of the following: Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal; Select the network function (NF) of the terminal's home network for the terminal; The process of authenticating and / or authorizing the terminal; The process of activating the security mode on the terminal; The fifth operation includes at least one of the following: The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier. When sending an identifier acquisition request to the terminal, the requested identifier type is type 5; The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

32. The terminal according to claim 31, characterized in that, The terminal also includes: The second receiving unit is used to receive an identifier from the first network to obtain a request, wherein the identifier type of the request is a fourth type; The fifth execution unit is used to perform an identifier retrieval response operation based on the identifier type in the identifier retrieval request; The identifier acquisition response operation includes at least one of the following: Send a first type identifier to the first network; Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed; Return the first type identifier and the first indication information to the first network; Send a third type identifier to the first network; The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID.

33. A terminal, characterized in that, include: The third receiving unit is used to receive an identifier from the first network to obtain a request, wherein the identifier type of the request is a fourth type; The sixth execution unit is used to perform an identifier retrieval response operation based on the identifier type in the identifier retrieval request; The identifier acquisition response operation includes at least one of the following: Send a first type identifier to the first network; Send a message to the first network indicating that no terminal identifier was requested or that identifier acquisition failed; Return the first type identifier and the first indication information to the first network; Send a third type identifier to the first network; The fourth type includes at least one of the following: SUCI, SUPI, and end-user identifiers that cannot contain NID; The first type of identifier includes: end-user identifiers that cannot contain NID; The third type of identifier includes: an end-user identifier that can contain an NID; Wherein, the first indication information is used to indicate at least one of the following: the PLMN ID of the first type identifier is not unique; the first type identifier is not unique; the network type of the terminal's home network is an Independent Non-Public Network (SNPN); request to skip or not perform the third operation; request to perform the fifth operation; The third operation includes at least one of the following: Obtain the first type identifier of the terminal from the terminal, or send an identifier acquisition request to the terminal; Select the network function (NF) of the terminal's home network for the terminal; The process of authenticating and / or authorizing the terminal; The process of activating the security mode on the terminal; The fifth operation includes at least one of the following: The terminal may be identified using a terminal identifier other than the first type of identifier, or by using the second type of identifier, or by using the third type of identifier. When sending an identifier acquisition request to the terminal, the requested identifier type is type 5; The fifth type includes at least one of the following: SUCI, SUPI, the terminal identifier type corresponding to the second type identifier, the terminal identifier type corresponding to the third type identifier, and the terminal identifier type other than the first type identifier.

34. The terminal according to claim 33, characterized in that, Sending the first type identifier to the first network includes: If the fourth condition is met, a first type identifier is sent to the first network; The fourth condition includes at least one of the following: The Public Land Mobile Network ID (PLMN ID) of the terminal's home network is unique, or the PLMN ID of the terminal's home network is not unique and the first network supports obtaining the Network Identifier (NID) of the terminal's home network through a method other than the first type of identifier. The PLMN ID in the first type identifier of the terminal is unique, or the PLMN ID in the first type identifier of the terminal is not unique and the first network supports obtaining the network identifier NID of the network that assigns the first type identifier by means other than the first type identifier. The first network does not support Network Identifier (NID); The first network does not support the network-specific identifier (NSI) format for end-user identifiers; The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

35. The terminal according to claim 33, characterized in that, The step of sending information to the first network indicating that no requested terminal identifier was found or that identifier acquisition failed, or returning a first type identifier and first indication information to the first network, includes: If the fifth condition is met, send information to the first network indicating that there is no requested terminal identifier or that identifier acquisition has failed, or return a first type identifier and first indication information to the first network. The fifth condition includes at least one of the following: The PLMN ID of the network to which the terminal belongs is not unique; The PLMN ID in the first type of identifier of the terminal is not unique; The first network does not support Network Identifier (NID); The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN); The first network does not support the Network Specific Identifier (NSI) format for end-user identifiers.

36. The terminal according to claim 33, characterized in that, Sending the third type identifier to the first network includes: If the sixth condition is met, a third type identifier is sent to the first network; The sixth condition includes at least one of the following: The PLMN ID of the network to which the terminal belongs is not unique; The PLMN ID in the first type of identifier of the terminal is not unique; The first network supports Network Identifier (NID); The first network supports the Network Specific Identifier (NSI) format for end-user identifiers; The identification information of the terminal's home network includes NID, and / or the network type of the terminal's home network includes: Independent Non-Public Network (SNPN); The identification information of the network that assigns the first type identifier to the terminal includes NID, and / or the network type of the network that assigns the first type identifier to the terminal includes: Independent Non-Public Network (SNPN).

37. A terminal, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein when the program or instructions are executed by the processor, they implement the steps of the network access method as described in any one of claims 1 to 9, or the steps of the network access method as described in any one of claims 10 to 15, or the steps of the network access method as described in any one of claims 16 to 21, or the steps of the network access method as described in any one of claims 22 to 26.

38. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the network access method as described in any one of claims 1 to 9, or the steps of the network access method as described in any one of claims 10 to 15, or the steps of the network access method as described in any one of claims 16 to 21, or the steps of the network access method as described in any one of claims 22 to 26.

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