Communication method, network device, terminal, communication system, computer program product, and storage medium

Abstract

The method comprises: sending first information to a second network device; wherein the first network device belongs to a second type network; and the first information is used for indicating at least one of the following: a terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network; and reserving registration information of the terminal in the first type network. The technical solution provided by the embodiments of the present disclosure can better adapt to network interworking.

Description

Communication method, network device, terminal, communication system, computer program product and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, a first network device, a second network device, a terminal, a communication system, a computer program product and a storage medium. BACKGROUND

[0002] In the field of communication technology, in order to support the interworking of the fifth generation mobile communication technology (5G, 5th Generation Mobile Communication Technology) network and the sixth generation mobile communication system (6G, 6th Generation Wireless Systems) network. It is required that in the area without 6G signal coverage, the terminal can use the 5G network to carry out business, or in the area where 5G and 6G networks provide coverage at the same time, the terminal can use 5G network and 6G network at the same time to carry out business, in order to share the load of a single network or speed up data transmission.

[0003] SUMMARY

[0004] In order to better meet the interworking requirements of the network.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, the method is executed by a first network device, and the method comprises:

[0006] sending first information to a second network device;

[0007] wherein the first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0008] the terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network;

[0009] reserving registration information of the terminal in the first type network.

[0010] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, the method is executed by a second network device, and the method comprises:

[0011] receiving first information sent by a first network device;

[0012] wherein the first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0013] The terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and a second type network;

[0014] Registration information of the terminal in the first type network is reserved.

[0015] According to a third aspect of an embodiment of the present disclosure, a communication method is provided, the method being performed by a terminal, and the method comprising:

[0016] sending second information to a first network device;

[0017] The second information is used to indicate a first globally unique temporary terminal identity (GUTI), the first GUTI being used to complete registration in a second type network, the first GUTI being an identity allocated to the terminal by the second type network, or the first GUTI being determined according to a second GUTI allocated to the terminal by the first type network.

[0018] According to a fourth aspect of an embodiment of the present disclosure, a communication method is provided, the method comprising:

[0019] a first network device sending first information to a second network device;

[0020] The first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0021] The terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network;

[0022] Registration information of the terminal in the first type network is reserved.

[0023] According to a fifth aspect of an embodiment of the present disclosure, a first network device is provided, the first network device comprising:

[0024] a transceiver module configured to:

[0025] send first information to a second network device;

[0026] The first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0027] The terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network;

[0028] Registration information of the terminal in the first type network is reserved.

[0029] According to a sixth aspect of embodiments of the present disclosure, a second network device is provided, the second network device comprising:

[0030] a transceiver configured to:

[0031] receive first information sent by a first network device;

[0032] wherein the first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0033] the terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in the first type network and the second type network;

[0034] the registration information of the terminal in the first type network is reserved.

[0035] According to a seventh aspect of embodiments of the present disclosure, a terminal is provided, the terminal comprising:

[0036] a transceiver configured to:

[0037] send second information to a first network device;

[0038] wherein the second information is used to indicate a first globally unique temporary terminal identity (GUTI), the first GUTI being used to complete registration in a second type network, the first GUTI being an identity allocated to the terminal by the second type network, or the first GUTI being determined according to a second GUTI allocated to the terminal by the first type network.

[0039] According to an eighth aspect of embodiments of the present disclosure, a communication system is provided, wherein the communication system comprises a first network device, a second network device and a terminal; the first network device is configured to implement the method of the first aspect, the second network device is configured to implement the method of the second aspect, and the terminal is configured to implement the method of the third aspect.

[0040] According to a ninth aspect of embodiments of the present disclosure, a first network device is provided, the first network device comprising:

[0041] one or more processors;

[0042] wherein the first network device is configured to perform the method of the first aspect.

[0043] According to a tenth aspect of embodiments of the present disclosure, a second network device is provided, the second network device comprising:

[0044] one or more processors;

[0045] ​​​​The second network device is configured to perform the method of the second aspect.

[0046] According to a first aspect of the embodiments of the present disclosure, a first network device is provided, and the first network device comprises:

[0047] one or more processors;

[0048] The second network device is configured to perform the method of the third aspect.

[0049] According to a twelfth aspect of the embodiments of the present disclosure, a computer program product is provided, comprising a computer program or instructions, which, when executed by a processor, implement the steps of the method of the first aspect, the second aspect and / or the third aspect.

[0050] According to a thirteenth aspect of the embodiments of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, when the instructions are run on a communication device, the communication device executes the method provided by the first aspect, the second aspect and / or the third aspect.

[0051] The technical solutions provided by the embodiments of the present disclosure can better adapt to network interworking.

[0052] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the embodiments of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following describes the drawings required for the embodiment description, and the following drawings are only some embodiments of the present disclosure, and do not specifically limit the protection scope of the present disclosure.

[0054] FIG. 1a is a schematic diagram of a communication system architecture according to an example embodiment;

[0055] FIG. 1b is a schematic diagram of a communication architecture according to an example embodiment;

[0056] FIG. 2a is a schematic diagram of a communication method flow according to an example embodiment;

[0057] FIG. 3a is a schematic diagram of a communication method flow according to an example embodiment;

[0058] FIG. 3b is a schematic diagram of a communication method flow according to an example embodiment;

[0059] FIG. 4a is a schematic diagram of a communication method flow according to an example embodiment;

[0060] FIG. 4b is a flow diagram of a communication method according to an example embodiment;

[0061] FIG. 5a is a flow diagram of a communication method according to an example embodiment;

[0062] FIG. 5b is a flow diagram of a communication method according to an example embodiment;

[0063] FIG. 6a is a flow diagram of a communication method according to an example embodiment;

[0064] FIG. 7a is a flow diagram of a communication method according to an example embodiment;

[0065] FIG. 7b is a flow diagram of a communication method according to an example embodiment;

[0066] FIG. 8a is a structural diagram of a first network device according to an example embodiment;

[0067] FIG. 8b is a structural diagram of a second network device according to an example embodiment;

[0068] FIG. 8c is a structural diagram of a terminal according to an example embodiment;

[0069] FIG. 9a is a structural diagram of a UE according to an example embodiment;

[0070] FIG. 9b is a structural diagram of a communication device according to an example embodiment. DETAILED DESCRIPTION

[0071] Embodiments of the present disclosure provide a communication method, a first network device, a second network device, a terminal, a communication system, a computer program product and a storage medium.

[0072] In a first aspect, the embodiments of the present disclosure provide a communication method, the method being performed by a first network device, and the method comprising: sending first information to a second network device; wherein the first network device belongs to a second type network; and the first information is used to indicate at least one of the following: a terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network; and reservation of registration information of the terminal in the first type network.

[0073] In the above embodiments, after the first network device sends the first information to the second network device, the terminal uses the first mode and / or the registration information of the terminal in the first type network is reserved based on the first information, so that the dual-network registration can be reliably performed and / or subsequent operations can be efficiently and reliably performed according to the first information.

[0074] In some embodiments of the first aspect, in some embodiments, the sending the first information to the second network device comprises: registering the terminal to the second type of network, and sending the first information to the second network device.

[0075] In the above embodiments, the sending the first information to the second network device can be performed after the terminal registers to the second type of network.

[0076] In some embodiments of the first aspect, in some embodiments, the registration of the terminal to the first type of network has been completed before the terminal registers to the second type of network, and the second network device stores registration information of the terminal to the first type of network.

[0077] In the above embodiments, since the second network device stores the registration information of the terminal to the first type of network, the registration information can be directly used subsequently.

[0078] In some embodiments of the first aspect, in some embodiments, during the registration of the terminal to the first type of network, the terminal is authorized to use or is not authorized to use the first mode.

[0079] In the above embodiments, during the registration of the terminal to the first type of network, the terminal can be authorized to use or not authorized to use the first mode.

[0080] In some embodiments of the first aspect, in some embodiments, during the registration of the terminal to the second type of network, the terminal is authorized to use or is not authorized to use the first mode.

[0081] In the above embodiments, during the registration of the terminal to the second type of network, the terminal can be authorized to use or not authorized to use the first mode, and the authorization manner is more flexible.

[0082] In some embodiments of the first aspect, in some embodiments, the terminal is authorized to use or is not authorized to use the first mode by the first network device based on user subscription information, or the terminal is authorized to use or is not authorized to use the first mode by the second network device based on user subscription information.

[0083] In the above embodiments, the authorization result can be adapted to the user subscription information.

[0084] In some embodiments of the first aspect, the first authorization result, which is that the terminal is authorized to use or is not authorized to use the first mode, has a higher priority than the second authorization result, which is that the terminal is authorized to use or is not authorized to use the first mode, in a priority mechanism.

[0085] In the above embodiments, the first authorization result or the second authorization result can be determined based on the priority mechanism, and the implementation is more flexible.

[0086] In some embodiments of the first aspect, the method further includes: receiving an authorization result from the second network device; and wherein the authorization result includes the first authorization result and / or the second authorization result.

[0087] In the above embodiments, the authorization result can be obtained from the second network device.

[0088] In some embodiments of the first aspect, the method further includes: sending the authorization result to the terminal.

[0089] In the above embodiments, the first network device can send the authorization result to the terminal in a timely manner.

[0090] In some embodiments of the first aspect, the method further includes: receiving second information sent by the terminal; and wherein the second information is used to indicate a first globally unique temporary terminal identifier (GUTI), the first GUTI is used to complete registration in the second type network, the first GUTI is an identifier allocated to the terminal by the second type network, or the first GUTI is determined according to a second GUTI allocated to the terminal by the first type network.

[0091] In the above embodiments, the first GUTI used for registration can be obtained from the terminal.

[0092] In some embodiments of the first aspect, the receiving of the second information sent by the terminal includes: receiving a registration request message sent by the terminal; and wherein the registration request message contains the second information.

[0093] In the above embodiments, the second information can be sent through the registration request message, and the signaling overhead can be saved.

[0094] In some embodiments of the first aspect, the registration request message contains third information, and the third information is used to indicate that the terminal uses the first mode.

[0095] In some embodiments of the first aspect, the method further comprises: obtaining fourth information from a third network device; wherein the third network device belongs to the first type of network; and the fourth information comprises at least one of: mobility management (MM) context information of the terminal in the first type of network; and session management (SM) context information of the terminal in the first type of network.

[0096] In the above embodiments, the MM context information and / or the SM context information can be obtained from a third network device.

[0097] In a second aspect, the embodiments of the present disclosure provide a communication method, the method being performed by a second network device, and the method comprising: receiving first information sent by a first network device; wherein the first network device belongs to a second type of network; and the first information is used to indicate at least one of: that the terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type of network and a second type of network; and that registration information of the terminal in the first type of network is reserved.

[0098] In some embodiments of the second aspect, the receiving of the first information sent by the first network device comprises: receiving the first information sent by the first network device after the terminal registers with the second type of network.

[0099] In some embodiments of the second aspect, the registration of the terminal in the first type of network has been completed before the terminal registers with the second type of network, and the second network device has saved registration information of the terminal in the first type of network.

[0100] In some embodiments of the second aspect, the method further comprises at least one of: performing an authorization operation for the terminal to use the first mode during a registration process of the terminal with the first type of network, to obtain a first authorization result; and performing an authorization operation for the terminal to use the first mode during a registration process of the terminal with the second type of network, to obtain a second authorization result; wherein the first authorization result is that the terminal is authorized to use or is not authorized to use the first mode; and the second authorization result is that the terminal is authorized to use or is not authorized to use the first mode.

[0101] In some embodiments of the second aspect, the performing of the authorization operation for the terminal to use the first mode comprises: performing the authorization operation for the terminal to use the first mode based on user subscription information.

[0102] In some embodiments of the second aspect, the priority of the first authorization result is higher than the priority of the second authorization result.

[0103] In some embodiments of the second aspect, the method further includes: sending an authorization result to the first network device; wherein the authorization result includes the first authorization result and / or the second authorization result.

[0104] In some embodiments of the second aspect, the method further includes: sending fifth information to a third network device; wherein the third network device belongs to the first type of network; and the fifth information is used to indicate that the terminal deregisters from the first type of network.

[0105] In a third aspect, the embodiments of the present disclosure provide a communication method, the method is performed by a terminal, and the method includes:

[0106] sending second information to a first network device; wherein the second information is used to indicate a first globally unique temporary terminal identifier (GUTI), the first GUTI is used to complete registration in a second type of network, the first GUTI is an identifier allocated to the terminal by the second type of network, or the first GUTI is determined according to a second GUTI allocated to the terminal by the first type of network.

[0107] In some embodiments of the third aspect, the registration request message includes third information, and the third information is used to indicate that the terminal uses the first mode.

[0108] In some embodiments of the third aspect, the method further includes: receiving an authorization result sent by the first network device; wherein the authorization result is that the terminal is authorized to use or is not authorized to use the first mode.

[0109] In some embodiments of the third aspect, in a registration process in which the terminal registers to the first type of network, the terminal is authorized to use or is not authorized to use the first mode.

[0110] In some embodiments of the third aspect, in a registration process in which the terminal registers to the second type of network, the terminal is authorized to use or is not authorized to use the first mode.

[0111] In some embodiments of the third aspect, the terminal is authorized to use or is not authorized to use the first mode by the first network device or a second network device based on user subscription information.

[0112] In some embodiments, the authorization result includes a first authorization result and / or a second authorization result; the first authorization result is an authorization result obtained in a registration procedure of the second type network; the second authorization result is an authorization result obtained in a registration procedure of the first type network; the first authorization result is that the terminal is authorized to use or is not authorized to use the first mode; the second authorization result is that the terminal is authorized to use or is not authorized to use the first mode; and the first authorization result has a higher priority than the second authorization result.

[0113] In a fourth aspect, the embodiments of the present disclosure provide a communication method, including: a first network device sending first information to a second network device; wherein the first network device belongs to a second type network; and the first information is used to indicate at least one of the following: a terminal using a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network; and reserving registration information of the terminal in the first type network.

[0114] In a fifth aspect, the embodiments of the present disclosure provide a first network device, including:

[0115] a transceiver module, configured to:

[0116] send first information to a second network device;

[0117] wherein the first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0118] a terminal using a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network;

[0119] and reserving registration information of the terminal in the first type network.

[0120] In a sixth aspect, the embodiments of the present disclosure provide a second network device, including:

[0121] a transceiver module, configured to:

[0122] receive first information sent by a first network device;

[0123] wherein the first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0124] a terminal using a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network;

[0125] reserve registration information of the terminal in the first type network.

[0126] In a seventh aspect, an embodiment of the present disclosure provides a terminal, the terminal comprising:

[0127] a transceiver module configured to:

[0128] send second information to the first network device;

[0129] wherein the second information is used to indicate a first global unique temporary terminal identity (GUTI), the first GUTI is used to complete registration in the second type network, and the first GUTI is an identity allocated to the terminal by the second type network or is determined according to a second GUTI allocated to the terminal by the first type network.

[0130] In an eighth aspect, an embodiment of the present disclosure provides a communication system comprising a first network device, a second network device, and a terminal; the first network device is configured to implement the method of the first aspect, the second network device is configured to implement the method of the second aspect, and the terminal is configured to implement the method of the third aspect.

[0131] In a ninth aspect, an embodiment of the present disclosure provides a first network device, the first network device comprising:

[0132] one or more processors;

[0133] wherein the first network device is configured to implement the method provided in the first aspect.

[0134] In a tenth aspect, an embodiment of the present disclosure provides a second network device, the second network device comprising:

[0135] one or more processors;

[0136] wherein the second network device is configured to implement the method provided in the second aspect.

[0137] In an eleventh aspect, an embodiment of the present disclosure provides a terminal, the terminal comprising:

[0138] one or more processors;

[0139] wherein the terminal is configured to implement the method provided in the third aspect.

[0140] In a twelfth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores instructions, when the instructions run on a communication device, cause the communication device to execute the method described in the optional implementation manner of the first aspect, the second aspect, and / or the third aspect.

[0141] In a thirteenth aspect, the embodiments of the present disclosure provide a program product, which, when executed by a communication device, causes the communication device to perform the method described in the optional implementation of the first aspect, the second aspect, and / or the third aspect.

[0142] In a fourteenth aspect, the embodiments of the present disclosure provide a computer program, which, when running on a computer, causes the computer to perform the method described in the optional implementation of the first aspect, the second aspect, and / or the third aspect.

[0143] In a fifteenth aspect, the embodiments of the present disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described in the optional implementation of the first aspect, the second aspect, and / or the third aspect.

[0144] It can be understood that the terminal, the first network device, the second network device, the communication system, the storage medium, the program product, the computer program, the chip or the chip system are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be described here.

[0145] The embodiments of the present disclosure propose a communication method, a terminal, a first network device, a second network device, a communication system, and a storage medium. In some embodiments, the communication method and the information indication method, the information processing method, the information transmission method, and the like can be replaced with each other, and the communication system and the information processing system can be replaced with each other.

[0146] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps of different embodiments or part of the steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation of other embodiments.

[0147] In each embodiment of the present disclosure, the terms and / or descriptions between the embodiments are consistent if there is no special description and logical conflict, and can be referred to each other, and the technical features in different embodiments can be combined to form a new embodiment according to their inherent logical relationship.

[0148] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and not as a limitation on the present disclosure.

[0149] In the embodiments of the present disclosure, an element expressed in singular form, such as "a", "an", "the", "said", "the aforementioned", "the foregoing", "this", and the like, unless otherwise specified, can represent "one and only one", or can represent "one or more", "at least one", and the like. For example, in the case of using an article such as "a", "an", "the" in English, the noun after the article can be understood as a singular expression, or can be understood as a plural expression.

[0150] In the embodiments of the present disclosure, "plurality" refers to two or more.

[0151] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple", and the like can be replaced with each other.

[0152] In some embodiments, the description modes such as "at least one of A, B", "A and / or B", "A in one case and B in another case", "in response to a case A, in response to a case B", and the like can include the following technical solutions according to the case: in some embodiments, A is executed regardless of B; in some embodiments, B is executed regardless of A; in some embodiments, A and B are selectively executed from A and B; in some embodiments, A and B are executed (A and B are both executed). When there are more branches such as A, B, C, and the like, it is similar to the above.

[0153] In some embodiments, the description modes such as "A or B" and the like can include the following technical solutions according to the case: in some embodiments, A is executed regardless of B; in some embodiments, B is executed regardless of A; in some embodiments, A and B are selectively executed from A and B; when there are more branches such as A, B, C, and the like, it is similar to the above.

[0154] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different. For another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0155] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0156] In some embodiments, the terms of "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0157] In some embodiments, the terms of "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above" and the like can be replaced with each other, and the terms of "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0158] In some embodiments, the apparatuses and devices can be interpreted as physical, as well as virtual, whose names are not limited to the names described in the embodiments, and in some cases can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0159] In some embodiments, "network" can be interpreted as an apparatus contained in the network, such as an access network device, a core network device, etc.

[0160] In some embodiments, "access network device (AN device)" can also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments can also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0161] In some embodiments, a "terminal" or "terminal device" can be referred to as a "user equipment" (UE), a "user terminal," a "mobile station" (MS), a "mobile terminal" (MT), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, and / or the like.

[0162] In some embodiments, data, information and / or the like can be obtained in compliance with laws and regulations of a country where the data, information and / or the like is obtained.

[0163] In some embodiments, data, information and / or the like can be obtained after consent of a user.

[0164] In addition, each element, each row, or each column in a table of embodiments of the present disclosure can be implemented as an independent embodiment, and a combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0165] FIG. 1a is a schematic diagram of an architecture of a communication system according to embodiments of the present disclosure.

[0166] As shown in FIG. 1a, a communication system 100 includes a terminal 101 and a network device 102.

[0167] In some embodiments, the network device 102 can include at least one of a first network device 1021, a second network device 1022, and a third network device 1023.

[0168] In some embodiments, the terminal includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable automobile, a smart automobile, a tablet (Pad), a wireless transceiver-equipped computer, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, and the like, but is not limited thereto.

[0169] In some embodiments, the access network device can be at least one of a node or a device that accesses a terminal to a wireless network, and can include an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, an access node in a Wi-Fi system, and the like, but is not limited thereto.

[0170] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, in which case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0171] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, with some of the protocol layers being controlled by the CU and the rest of the protocol layers or all of the protocol layers being distributed in the DUs and controlled by the CU, but is not limited thereto.

[0172] In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups including all or part of the one or more network elements. The network element can be virtual or physical. The core network includes at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next-generation core (NGC).

[0173] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art can know that, as the system architecture evolves and new business scenarios appear, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0174] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1a or part of the subject, but are not limited thereto. The subjects shown in FIG. 1a are exemplary, and the communication system can include all or part of the subjects in FIG. 1a, or can include other subjects other than those in FIG. 1a. The number and form of each subject is arbitrary, and the connection relationship between the subjects is exemplary. The subjects can be connected or not connected, and the connection can be in any manner, can be direct connection or indirect connection, and can be wired connection or wireless connection.

[0175] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0176] In some embodiments, considering the migration from 5G to 6G, there can be areas with insufficient 6G network coverage in the early stage of 6G deployment. To improve the user experience in such areas, it is necessary to consider the co-deployment of 5G and 6G networks so that a UE can simultaneously connect to 5G and 6G networks in such areas. If the UE is located in an area covered by 6G, it can connect to the 6G network. If the UE is located in an area covered by both 5G and 6G, it can simultaneously connect and use both networks.

[0177] In some embodiments, if the UE simultaneously uses 5G access and 6G access, it can be controlled whether the traffic can use the 5G network or the 6G network, or traffic switching or offloading on the 5G network and the 6G network.

[0178] In some embodiments, referring to FIG. 1b, the UE can access the 5G network alone, or access the 6G network alone, or can access the 5G and 6G networks simultaneously. The 5G-RAN is a 5G access network, and the 6G-RAN is a 6G access network. The 5G-Access and Mobility Management Function (AMF) and the 6G-AMF represent the network functions responsible for user access management in the 5G and 6G networks, respectively. The 5G / 6G-Session Management Function (SMF) is a network function shared by the 5G and 6G networks responsible for session management related to user access. The Policy Control Function (PCF) is a policy control function, which can be divided into a Session Management (SM)-PCF related to session management and a User Equipment (UE)-PCF related to user access. The SM-PCF selected during session creation is responsible for providing session management related policies, such as Quality of Service (QoS) policies. The UE-PCF, selected during UE registration, is responsible for providing access related policies, such as User Equipment Routing Selection Policy (URSP) rules, etc. The 5G / 6G-User Plane Function (UPF) is a user plane function shared by the 5G and 6G networks. In order to support 5G and 6G interworking, when a user accesses the 5G and 6G networks simultaneously, the same dedicated SMF (referred to as 5G / 6G SMF) and dedicated UPF (referred to as 5G / 6G UPF) are selected to serve the user access. The interworking interface between the 5G-AMF and the 6G-AMF (referred to as AMF-I) is used to transfer UE mobility management state and session management state. The reference architecture supports UE registration to the 5G Core network (5GC) alone, registration to the 6GC alone, or registration to the 5GC and the 6GC simultaneously.

[0179] In some embodiments, when a user migrates from a 5G network to a 6G network, a UE supporting a single registration mode can use an AMF-I to transfer the mobility management and session management state, and vice versa. For example, a UE is registered in a 5G network and is in an idle mode. When the UE moves to a 6G coverage, it can perform a 6G registration using a 6G-Globally Unique Temporary UE Identity (GUTI), which is mapped from a 5G-GUTI, and indicates that it is migrating from a 5G network to a 6G network in the 6G registration procedure. When a 6G-AMF receives a registration request from the UE, it can obtain the mobility management (MM) and session management (SM) context of the UE at the time of registration in the 5G network from the 5G network through the AMF-I interface. After successful registration to the 6G network, the unified data management (UDM) should perform the deregistration of the UE in the 5G network.

[0180] In some embodiments, the AMF-I interface can be applied to UEs supporting a single registration mode. However, it can also be considered to apply it to UEs supporting a dual registration mode. One of the reasons is that non-terrestrial network (NTN) access (such as satellite access) will become a common access technology in the 6G era compared to the 5G era. Before it is widely applied, the NTN access procedure should be optimized to reduce the access latency. When 5G and 6G interworking is supported, such access optimization can be achieved through the AMF-I interface.

[0181] FIG. 2a is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2a, the embodiment of the present disclosure relates to a communication method, for a communication system 100, the method comprising:

[0182] Step S2101: The second network device sends an authorization result to the first network device.

[0183] In some embodiments, the first network device receives the authorization result sent by the second network device.

[0184] In some embodiments, the first network device is a 5G-Access and Mobility Management Function (AMF), and the second network device is a 5G / 6G-Unified Data Management (UDM).

[0185] In some embodiments, the first network device can send a request message to the second network device for requesting authorization of the first mode; and the second network device sends an authorization result to the first network device. Of course, the second network device can also actively send the authorization result to the first network device.

[0186] In some embodiments, the second network device can send an update location response message to the first network device, the update location response message including the authorization result.

[0187] In some embodiments, the first network device can also authorize the terminal to use the first mode based on user subscription information provided by the second network device.

[0188] In some embodiments, the first mode is a mode that the terminal supports simultaneous registration in the first type network and the second type network.

[0189] In some embodiments, the authorization result is used to indicate that the terminal is authorized or not authorized by the first network device to use the first mode.

[0190] In some embodiments, the authorization result is used to indicate that the terminal is authorized or not authorized by the second network device to use the first mode.

[0191] In some embodiments, during a registration process in which the terminal registers to the first type network, the terminal is authorized or not authorized by the first network device to use the first mode.

[0192] In some embodiments, during a registration process in which the terminal registers to the first type network, the terminal is authorized or not authorized by the second network device to use the first mode.

[0193] In some embodiments, during a registration process in which the terminal registers to the second type network, the terminal is authorized or not authorized by the first network device to use the first mode.

[0194] In some embodiments, during a registration process in which the terminal registers to the second type network, the terminal is authorized or not authorized by the second network device to use the first mode.

[0195] In some embodiments, the terminal is authorized or not authorized by the first network device to use the first mode based on user subscription information.

[0196] In some embodiments, the terminal is authorized or not authorized by the second network device to use the first mode based on user subscription information.

[0197] In some embodiments, the first authorization result obtained in the registration procedure of the second type network has a higher priority than the second authorization result obtained in the registration procedure of the first type network. Here, when the terminal obtains the first authorization result and the second authorization result, the first authorization result is used preferentially due to its higher priority.

[0198] In some embodiments, the first authorization result is that the terminal is authorized or not authorized by the first network device to use the first mode.

[0199] In some embodiments, the first authorization result is that the terminal is authorized or not authorized by the second network device to use the first mode.

[0200] In some embodiments, the second authorization result is that the terminal is authorized or not authorized by the first network device to use the first mode.

[0201] In some embodiments, the second authorization result is that the terminal is authorized or not authorized by the second network device to use the first mode.

[0202] In some embodiments, the second network device performs an authorization operation on the terminal using the first mode in a registration procedure of registering to the first type network, and obtains a first authorization result.

[0203] In some embodiments, the second network device performs an authorization operation on the terminal using the first mode in a registration procedure of registering to the second type network, and obtains a second authorization result.

[0204] In some embodiments, the authorization result includes the first authorization result and / or the second authorization result.

[0205] In some embodiments, the first network device belongs to the second type network.

[0206] In some embodiments, the first type network is a 6G network, and the second type network is a 5G network.

[0207] Step S2102: The first network device or the second network device sends an authorization result to the terminal.

[0208] In some embodiments, the terminal receives the authorization result sent by the first network device or the second network device.

[0209] In some embodiments, the terminal receives the authorization result sent by the second network device through the third network device. The third network device can be a 5G-AMF.

[0210] In some embodiments, the first network device sends a registration accept message to the terminal, and the registration accept message contains the authorization result.

[0211] Step S2103: The first network device sends first information to the second network device.

[0212] In some embodiments, the second network device receives the first information sent by the first network device.

[0213] In some embodiments, the second network device sends an update location request to the first network device, and the update location request contains the first information.

[0214] In some embodiments, the first information is used to indicate at least one of the following:

[0215] The terminal uses a first mode, and the first mode is a mode in which the terminal supports simultaneous registration in the first type network and the second type network;

[0216] The registration information of the terminal in the first type network is reserved.

[0217] It should be noted that reserving the registration information of the terminal in the first type network can be to continue saving the registration information of the terminal in the first type network, rather than deleting the registration information.

[0218] In some embodiments, the terminal registers to the second type network and sends the first information to the second network device. That is, the first information can be sent to the second network device after completing registration in the second type network.

[0219] In some embodiments, the registration in the first type network has been completed before the terminal registers to the second type network, and the second network device has saved the registration information of the terminal in the first type network.

[0220] Step S2104: The terminal sends second information to the first network device.

[0221] In some embodiments, the first network device receives the second information sent by the terminal.

[0222] In some embodiments, the second information is used to indicate a first globally unique temporary user identity (GUTI, Globally Unique Temporary UE Identity).

[0223] In some embodiments, the first GUTI is used to complete registration in the second type network.

[0224] In some embodiments, the first GUTI is an identifier allocated by the second type network for the terminal.

[0225] In some embodiments, the first GUTI is determined according to a second GUTI allocated by the first type network for the terminal.

[0226] In some embodiments, there is a mapping relationship between the first GUTI and the second GUTI.

[0227] In some embodiments, a registration request message sent by the terminal is received, wherein the registration request message contains the second information.

[0228] In some embodiments, the registration request message contains third information, and the third information is used to indicate that the terminal uses the first mode.

[0229] Step S2105: The first network device acquires fourth information.

[0230] In some embodiments, the fourth information is acquired from a third network device; and the third network device belongs to the first type network.

[0231] In some embodiments, the first network device sends request information to the third network device, and the third network device sends the fourth information to the first network device.

[0232] In some embodiments, the third network device can acquire the fourth information from a fourth network device.

[0233] In some embodiments, the fourth information includes at least one of the following:

[0234] Mobile management (MM) context information of the terminal in the first type network;

[0235] Session management (SM) context information of the terminal in the first type network.

[0236] In some embodiments, the third network device can be a 5G-AMF, and the fourth network device can be a 5G / 6G-session management function (SMF).

[0237] In some embodiments, there is an interface between the first network device and the third network device, for example, the first network device is a 6G-AMF, the third network device is a 5G-AMF, and the interface is an AMF-I, and the AMF-I supports interworking between 5G and 6G.

[0238] Step S2106: The second network device sends fifth information to the third network device.

[0239] In some embodiments, the third network device receives the fifth information sent by the second network device.

[0240] In some embodiments, the fifth information is used to indicate that the terminal is deregistered from the first type network.

[0241] In some embodiments, the term "information" can be mutually replaced with the terms "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", "data", and the like.

[0242] In some embodiments, the term "send" can be mutually replaced with the terms "transmit", "report", "transport", and the like.

[0243] The information indication method related to the embodiments of the present disclosure can include at least one of steps S2101 to S2106. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, step S2104 can be implemented as an independent embodiment, step S2105 can be implemented as an independent embodiment, and step S2106 can be implemented as an independent embodiment. For example, step S2101 in combination with step S2102, step S2103 can be implemented as an independent embodiment, step S2103 in combination with step S2105, step S2106 can be implemented as an independent embodiment, step S2101 in combination with step S2102, step S2103, step S2105, step S2106 can be implemented as an independent embodiment, step S2101 in combination with step S2102, step S2103, step S2104, step S2105, step S2106 can be implemented as an independent embodiment, but is not limited thereto.

[0244] FIG. 3a is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3a, the embodiment of the present disclosure relates to a communication method, which is performed by a first network device, and the method comprises the following steps.

[0245] Step S3101: receiving an authorization result sent by a second network device.

[0246] In some embodiments, optional implementation of step S3101 can refer to other associated parts in the embodiments related to step S2101 in FIG. 2a, which will not be repeated here.

[0247] Step S3102: sending the authorization result to a terminal.

[0248] In some embodiments, optional implementation of step S3102 can refer to other associated parts in the embodiments related to step S2102 in FIG. 2a, which will not be repeated here.

[0249] Step S3103: sending first information to the second network device.

[0250] In some embodiments, optional implementation of step S3103 can refer to other associated parts in the embodiments related to step S2103 in FIG. 2a, which will not be repeated here.

[0251] Step S3104: receiving second information sent by the terminal.

[0252] In some embodiments, optional implementation of step S3104 can refer to other associated parts in the embodiments related to step S2104 in FIG. 2a, which will not be repeated here.

[0253] Step S3105: obtaining fourth information.

[0254] In some embodiments, optional implementation of step S3105 can refer to other associated parts in the embodiments related to step S2105 in FIG. 2a, which will not be repeated here.

[0255] The information indication method related to the embodiments of the present disclosure can include at least one of steps S3101 to S3105. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, step S3103 can be implemented as an independent embodiment, step S3104 can be implemented as an independent embodiment, and step S3105 can be implemented as an independent embodiment. For example, step S3101 in combination with step S3102, step S3103 can be implemented as an independent embodiment, step S3103 in combination with step S3105 can be implemented as an independent embodiment, step S3101 in combination with step S3102, step S3103, and step S3105 can be implemented as an independent embodiment, step S3101 in combination with step S3102, step S3103, step S3104, and step S3105 can be implemented as an independent embodiment, but the present disclosure is not limited thereto.

[0256] FIG. 3b is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3b, the embodiments of the present disclosure relate to a communication method, which is performed by a first network device, and the above method includes:

[0257] Step S3201: sending first information to a second network device.

[0258] In some embodiments, the first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0259] The terminal uses a first mode, and the first mode is a mode in which the terminal supports simultaneous registration in the first type network and the second type network;

[0260] Reserving registration information of the terminal in the first type network.

[0261] In some embodiments, the optional implementation of step S3201 can refer to other associated parts in the embodiments related to step S2103 in FIG. 2a, which will not be described here.

[0262] In some embodiments, the sending of the first information to the second network device includes:

[0263] The terminal registers to the second type network and sends the first information to the second network device.

[0264] In some embodiments, the registration in the first type network has been completed before the terminal registers to the second type network, and the second network device saves the registration information of the terminal in the first type network.

[0265] In some embodiments, the terminal is authorized to use or not authorized to use the first mode in a registration procedure in which the terminal registers to the first type network.

[0266] In some embodiments, the terminal is authorized to use or not authorized to use the first mode in a registration procedure in which the terminal registers to the second type network.

[0267] In some embodiments, the terminal is authorized to use or not authorized to use the first mode by the first network device based on user subscription information, or the terminal is authorized to use or not authorized to use the first mode by the second network device based on user subscription information.

[0268] In some embodiments, a first authorization result obtained in a registration procedure of the second type network has a higher priority than a second authorization result obtained in a registration procedure of the first type network; the first authorization result is that the terminal is authorized to use or not authorized to use the first mode; the second authorization result is that the terminal is authorized to use or not authorized to use the first mode.

[0269] In some embodiments, the method further comprises:

[0270] receiving an authorization result from the second network device;

[0271] The authorization result includes the first authorization result and / or the second authorization result.

[0272] In some embodiments, the method further comprises:

[0273] sending the authorization result to the terminal.

[0274] In some embodiments, the method further comprises:

[0275] receiving second information sent by the terminal;

[0276] The second information is used to indicate a first globally unique temporary terminal identity (GUTI), the first GUTI is used to complete registration in the second type network, the first GUTI is an identifier allocated to the terminal by the second type network, or the first GUTI is determined according to a second GUTI allocated to the terminal by the first type network.

[0277] In some embodiments, the receiving second information sent by the terminal comprises:

[0278] receiving a registration request message sent by the terminal;

[0279] The registration request message contains the second information.

[0280] In some embodiments, the registration request message contains third information, which is used to indicate that the terminal uses the first mode.

[0281] In some embodiments, the method further comprises:

[0282] obtaining fourth information from a third network device;

[0283] The third network device belongs to the first type of network; and the fourth information includes at least one of the following:

[0284] mobility management (MM) context information of the terminal in the first type of network;

[0285] session management (SM) context information of the terminal in the first type of network.

[0286] FIG. 4a is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 4a, the embodiment of the present disclosure relates to a communication method, which is performed by a second network device, and the above method comprises:

[0287] Step S4101: sending an authorization result to a first network device.

[0288] In some embodiments, the optional implementation of step S4101 can refer to other associated parts in the embodiments related to step S2101 in FIG. 2a, which will not be repeated here.

[0289] Step S4102: sending an authorization result to a terminal.

[0290] In some embodiments, the optional implementation of step S4102 can refer to other associated parts in the embodiments related to step S2102 in FIG. 2a, which will not be repeated here.

[0291] Step S4103: receiving first information sent by a first network device.

[0292] In some embodiments, the optional implementation of step S4103 can refer to other associated parts in the embodiments related to step S2103 in FIG. 2a, which will not be repeated here.

[0293] Step S4104: sending fifth information to a third network device.

[0294] In some embodiments, the optional implementation of step S4104 can refer to other associated parts in the embodiments related to step S2106 in FIG. 2a, which will not be repeated here.

[0295] The information indication method related to the embodiments of the present disclosure can include at least one of steps S4101 to S4104. For example, step S4101 can be implemented as an independent embodiment, step S4102 can be implemented as an independent embodiment, step S4103 can be implemented as an independent embodiment, and step S4104 can be implemented as an independent embodiment. For example, step S4101 in combination with step S4103 and step S4104 can be implemented as an independent embodiment, step S4102 in combination with step S4103 and step S4104 can be implemented as an independent embodiment, and step S4103 in combination with step S4104 can be implemented as an independent embodiment, but the present disclosure is not limited thereto.

[0296] FIG. 4b is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 4b, the embodiments of the present disclosure relate to a communication method, which is performed by a second network device, and the above method includes:

[0297] Step S4201: receiving first information sent by a first network device.

[0298] In some embodiments, the first network device belongs to a second type network; and the first information is used to indicate at least one of the following:

[0299] The terminal uses a first mode, and the first mode is a mode supported by the terminal and simultaneously supported by the terminal in the first type network and the second type network;

[0300] Reserving registration information of the terminal in the first type network.

[0301] In some embodiments, the optional implementation of step S4201 can refer to other associated parts in the embodiments related to step S2101 in FIG. 2a, which will not be described here.

[0302] In some embodiments, the receiving of the first information sent by the first network device includes:

[0303] The terminal registers to the second type network and receives the first information sent by the first network device.

[0304] In some embodiments, the registration in the first type network has been completed before the terminal registers to the second type network, and the second network device saves the registration information of the terminal in the first type network.

[0305] In some embodiments, the method further includes at least one of the following:

[0306] In the registration process of the terminal to the first type network, an authorization operation of the terminal using the first mode is performed to obtain a first authorization result;

[0307] In the registration procedure of registering to the second type network, the terminal is performed with the authorization operation of using the first mode, and a second authorization result is obtained;

[0308] The first authorization result is that the terminal is authorized to use or is not authorized to use the first mode, and the second authorization result is that the terminal is authorized to use or is not authorized to use the first mode.

[0309] In some embodiments, the performing of the authorization operation of the terminal using the first mode comprises:

[0310] The authorization operation of the terminal using the first mode is performed based on user subscription information.

[0311] In some embodiments, the priority of the first authorization result is higher than the priority of the second authorization result.

[0312] In some embodiments, the method further comprises:

[0313] The authorization result is sent to the first network device.

[0314] The authorization result comprises the first authorization result and / or the second authorization result.

[0315] In some embodiments, the method further comprises:

[0316] The fifth information is sent to a third network device.

[0317] The third network device belongs to the first type network, and the fifth information is used to indicate that the terminal is deregistered from the first type network.

[0318] FIG. 5a is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 5a, the embodiment of the present disclosure relates to a communication method performed by a terminal, and the above method comprises:

[0319] Step S5101: obtaining an authorization result.

[0320] In some embodiments, the optional implementation of step S5101 can refer to other associated parts in the embodiments related to step S2102 in FIG. 2a, which will not be repeated here.

[0321] Step S5102: sending second information to a first network device.

[0322] In some embodiments, the optional implementation of step S5102 can refer to other associated parts in the embodiments related to step S2104 in FIG. 2a, which will not be repeated here.

[0323] The information indication method related to the embodiments of the present disclosure can include at least one of steps S5101 to S5102. For example, step S5101 can be implemented as an independent embodiment, and step S5102 can be implemented as an independent embodiment. For example, step S5101 in combination with step S5102 can be implemented as an independent embodiment, but is not limited thereto.

[0324] FIG. 5b is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 5b, the embodiments of the present disclosure relate to a communication method, which is performed by a terminal, and the above method includes:

[0325] Step S5201: sending second information to a first network device.

[0326] In some embodiments, the second information is used to indicate a first globally unique temporary terminal identity (GUTI), the first GUTI is used to complete registration in a second type network, the first GUTI is an identity allocated to the terminal by the second type network, or the first GUTI is determined according to a second GUTI allocated to the terminal by the first type network.

[0327] In some embodiments, the optional implementation of step S5201 can refer to other associated parts in the embodiments related to step S2104 in FIG. 2a, which will not be described here.

[0328] In some embodiments, the registration request message contains third information, and the third information is used to indicate that the terminal uses the first mode.

[0329] In some embodiments, the method further includes:

[0330] receiving an authorization result sent by the first network device;

[0331] The authorization result is that the terminal is authorized to use or is not authorized to use the first mode.

[0332] In some embodiments, in the registration process of the terminal registering to the first type network, the terminal is authorized to use or is not authorized to use the first mode.

[0333] In some embodiments, in the registration process of the terminal registering to the second type network, the terminal is authorized to use or is not authorized to use the first mode.

[0334] In some embodiments, the terminal is authorized to use or is not authorized to use the first mode based on user subscription information by the first network device, or the terminal is authorized to use or is not authorized to use the first mode based on user subscription information by the second network device.

[0335] In some embodiments, the authorization result includes a first authorization result and / or a second authorization result; the first authorization result is an authorization result obtained in completing a registration procedure of the second type network; the second authorization result is an authorization result obtained in completing a registration procedure of the first type network; the first authorization result is that the terminal is authorized to use or is not authorized to use the first mode; the second authorization result is that the terminal is authorized to use or is not authorized to use the first mode; the priority of the first authorization result is higher than the priority of the second authorization result.

[0336] FIG. 6a is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 6a, the embodiment of the present disclosure relates to a communication method, for a communication system 100, the method comprising one of the following steps:

[0337] Step S6101: The first network device sends first information to the second network device.

[0338] In some embodiments, the first network device belongs to the second type network; the first information is used to indicate at least one of the following:

[0339] The terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in the first type network and the second type network;

[0340] The registration information of the terminal in the first type network is reserved.

[0341] The optional implementation manners of step S6101 can be respectively referred to the optional implementation manners of steps S2101 to S2106 of FIG. 2a and other associated parts in the embodiments related to FIG. 2a, which will not be described here.

[0342] In some embodiments, the above method can include the methods of the above embodiments of the communication system side, the terminal, the first network device, the second network device, etc., which will not be described here.

[0343] In order to better understand the embodiments of the present disclosure, the following will be further described through some exemplary embodiments:

[0344] In some embodiments, the UE registers to a first network, and a first network element (corresponding to the first network device) sends a first indication to a UDM; according to the first indication, the unified data management function reserves the registration information of the UE in a second network.

[0345] In some embodiments, before the UE registers to the first network, the registration to the second network has been completed, and the registration information of the UE in the second network is saved in the UDM;

[0346] The first network element is a network function responsible for access management of the user in the first network.

[0347] The first indication is used to indicate that the UE uses a dual registration mode, which means that the UE supports simultaneous registration to a 5G network and a 6G network, or an indication of reserving a second network registration.

[0348] The unified data management function is used to manage user subscription data and manage registration information of the user accessing the network.

[0349] In some embodiments, the first network is a 5G network, and the second network is a 6G network, or the first network is a 6G network, and the second network is a 5G network.

[0350] In some embodiments, the UE registering to the first network includes:

[0351] The first network element receives a registration request from the UE, and the registration request contains a globally unique temporary UE identifier (GUTI) of the UE in the first network, wherein the GUTI of the UE in the first network can be allocated by the first network for the UE, or generated according to the GUTI of the UE in the second network.

[0352] In some embodiments, the registration request further includes a second indication, wherein the second indication is used to indicate that the UE migrates from the second network to the first network.

[0353] In some embodiments, before the UE registers to the first network, completing registration to the second network includes:

[0354] The first network element or UDM authorizes the UE to use a dual-network registration mode according to the user subscription data, wherein the user subscription data indicates that the UE supports simultaneous registration to the first network and the second network.

[0355] In some embodiments, the registration request further includes a third indication, wherein the third indication is used to indicate that the UE supports a dual-network registration mode.

[0356] In some embodiments, after the UDM receives the first indication, if the UE does not support the dual-network registration capability, a fourth indication that the UE does not support the dual-network registration capability is returned. Wherein the fourth indication is returned to the UE by the first network element.

[0357] In some embodiments, the UDM sends a deregistration message to the second network element, wherein the second network element is a network function responsible for access management of the UE in the second network, and the deregistration message is used to indicate that the UE is deregistered from the second network.

[0358] In some embodiments, the first network element obtains registration information of the UE from the second network, wherein the registration information comprises mobility management context information and / or session management context information of the UE in the second network.

[0359] Example 1

[0360] The interface (AMF-I, AMF-Interface) between the 5G-Access and Mobility Management Function (AMF) and the 6G-AMF supports 5G and 6G interworking. If the UE supports the dual registration mode of 5G and 6G network at the same time, the UE subscription information stored in the 5G / 6G Unified Data Management (UDM) should include this information.

[0361] Referring to FIG. 7a, the embodiment of the disclosure provides a communication method, which comprises:

[0362] Step S7101: The UE first accesses the 5G network, and performs a registration process between the UE and the 5G network. In the registration process, if the 5G / 6G UDM checks that the UE supports the 5G / 6G dual registration mode based on the UE subscription information, the UE can be notified of a dual registration authorization indication.

[0363] Step S7101 comprises:

[0364] Step S7101a: sending a registration request message;

[0365] Step S7101b: obtaining a dual registration authorization;

[0366] Step S7101c: sending a registration acceptance message;

[0367] Step S7102: sending a registration request.

[0368] In some embodiments, if the UE moves to a location under 6G coverage, it wants to initiate 6G registration. The UE can use the 6G-GUIT mapped from the 5G- Globally Unique Temporary UE Identity (GUTI) to initiate a 6G registration request. In addition, the request message can also include an indication indicating that the UE migrates from the 5G network to the 6G network and / or a UE dual registration indication (corresponding to the first information corresponding to the terminal using the first mode).

[0369] Step S7103: Send a context request. Based on the 6G-GUTI, a 6G-AMF that supports interworking with the 5G-AMF is selected. The 6G-AMF receives the request message from the UE. Based on the indication in the message, the 6G-AMF discovers the 5G-AMF and sends a context request to the 5G-AMF. The UE can be requested for a Mobile Management (MM) context and / or a Session Management (SM) context on the 5G network.

[0370] Step S7104: Get UE SM context. The 5G-AMF can send a SM context request to the 5G / 6G Session Management Function (SMF) based on the context request message if needed. The 5G / 6G SMF sends the UE SM context to the 5G-AMF.

[0371] Step S7105: The 5G-AMF sends a context response to the 6G-AMF. The MM context and / or the SM context (corresponding to the fourth information) of the UE on the 5G network is sent to the 6G-AMF.

[0372] Step S7106: Perform authentication and authorization procedure for the UE registered with 6G. If no dual registration authorization is done in step S7106, it can be done in this step. Or there is a conflict for authorization, then the latest authorization is valid.

[0373] Step S7107: Send a context ACK message. If the context transfer is completed, the 6G-AMF sends a context ACK message to the 5G-AMF.

[0374] Step S7108: 6G session creation. Based on the SM context, the 6G-AMF can initiate a 6G session creation to the 5G / 6G SMF.

[0375] Step S7109: Send an update location request. If the 6G registration is completed, the 6G-AMF sends an update location request message to the 5G / 6G UDM. The 6G-AMF sends an indication to the 5G / 6G UDM indicating that the UE is registered in the 5G network (corresponding to the first information).

[0376] Step S7110: Send an update location ACK. An update location ACK is returned to the 6G-AMF.

[0377] Step S7111: Send a registration accept message. Based on the procedure, the UE accesses the 5G and 6G networks simultaneously.

[0378] Example 2

[0379] The interface between 5G-AMF and 6G-AMF (AMF-I) supports 5G and 6G interworking. The UE supporting single registration mode or dual registration mode will be included in the UE subscription information stored in the 5G / 6G UDM.

[0380] Referring to FIG. 7b, the embodiment of the disclosure provides a communication method, which comprises:

[0381] Step S7201: The UE first accesses the 5G network, and performs a registration procedure between the UE and the 5G network.

[0382] Step S7202: A registration request is sent. If the UE moves to a location under 6G coverage, it wants to initiate 6G registration. The UE can use the 6G-GUIT mapped from the 5G-GUTI to send the 6G registration request. In addition, the request message can include an indication that the UE is migrating from the 5G network and / or a UE dual registration indication (corresponding to the first information).

[0383] Step S7203: A context request is sent. Based on the 6G-GUTI, the 6G-AMF supporting interworking with the 5G-AMF is selected. The 6G-AMF receives the request message from the UE. Based on the indication in the message, the 6G-AMF discovers the 5G-AMF and sends a context request to the 5G AMF. The UE mobility management (MM) context and / or the session management (SM) context on the 5G network can be requested.

[0384] Step S7204: The UE SM context is acquired. The 5G-AMF can send an SM context request to the 5G / 6G SMF based on the context request message as needed. The 5G / 6G SMF sends the UE SM context to the 5G-AMF.

[0385] Step S7205: The 5G-AMF sends a context response to the 6G-AMF. The UE MM context and / or the SM context (corresponding to the fourth information) are sent to the 6G-AMF.

[0386] Step S7206: An authentication and authorization procedure is performed for the UE registered with the 6G.

[0387] Step S7207: A context ACK message is sent. If the context transmission is complete, the 6G-AMF sends a context ACK message to the 5G-AMF.

[0388] Step S7208: 6G session establishment. Based on the SM context, the 6G-AMF can initiate 6G session creation to the 5G / 6G SMF.

[0389] Step S7209: sending an update location request. If the 6G registration is completed, the 6G AMF sends an update location request message to the 5G / 6G UDM. The 6G-AMF sends an indication to the 5G / 6G UDM that the UE registered to the 5G network should be kept.

[0390] Step S7210: determining not to allow the dual registration mode. If the 5G / 6G UDM receives the indication in step S7209, it determines that the UE does not support the dual registration mode, or based on the UE's subscription information, the dual registration mode is not allowed.

[0391] Step S7211: triggering the UE to deregister from the 5G. The 5G / 6G UDM initiates the deregistration of the UE from the 5G network via triggering Nudm_UECM_Deregistration (corresponding to sending the fifth information to the third network device).

[0392] Step S7212: triggering PDU session release. If the 5G-AMF receives the UE deregistration indication, it initiates PDU session release to the 5G / 6G SMF.

[0393] Step S7213: sending an update location ACK. After the UE deregisters from the 5G, the 5G / 6G UDM sends an update location ACK containing information indicating that the dual registration is not allowed to the 6G-AMF.

[0394] Step S7214: sending an indication that the dual registration is not allowed. The 6G-AMF uses the 6G registration accept message to inform the UE of the indication that the dual registration is not allowed.

[0395] Based on the procedure, the UE accesses the 6G network and deregisters from the 5G network.

[0396] In the embodiments of the present disclosure, part or all of the steps, and optional implementation manners thereof, can be combined with part or all of the steps in other embodiments, or can be combined with optional implementation manners in other embodiments.

[0397] The embodiments of the present disclosure also propose an apparatus for implementing any of the above methods, for example, an apparatus comprising units or modules for implementing the steps performed by the terminal in any of the above methods. For another example, another apparatus is proposed, comprising units or modules for implementing the steps performed by the network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0398] It should be understood that the division of each unit or module in the above device is only a logical function division, and all or part of them can be integrated into one physical entity or separated on the physical entity in actual implementation. In addition, the units or modules in the device can be implemented in the form of processor calling software: for example, the device includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or realize the functions of the units or modules of the device, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be realized by the design of the hardware circuit. The above hardware circuit can be understood as one or more processors; for example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are realized by the design of the logical relationship of the elements in the circuit; for another example, in another implementation, the above hardware circuit is a programmable logic device (PLD), and a field programmable gate array (FPGA) is taken as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize the functions of part or all of the units or modules. All units or modules of the above device can be implemented in the form of processor calling software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules are implemented in the form of processor calling software, and the remaining part is implemented in the form of hardware circuit.

[0399] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), and the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), and the like.

[0400] FIG. 8a is a structural schematic diagram of a first network device 8100 according to an embodiment of the present disclosure. As shown in FIG. 8a, the first network device 8100 can include at least one of a transceiver module 8101, a processing module 8102, and the like. In some embodiments, the transceiver module 8101 is configured to transmit and / or receive information. Optionally, the transceiver module 8101 is configured to perform at least one of the communication steps, such as transmitting and / or receiving, performed by the first network device in any of the methods described above. Details are not described herein again. Optionally, the processing module 8102 is configured to perform at least one of the other steps performed by the first network device in any of the methods described above. Details are not described herein again.

[0401] FIG. 8b is a structural diagram of a second network device 8200 according to an embodiment of the present disclosure. As shown in FIG. 8b, the second network device 8200 can include at least one of a transceiver module 8201, a processing module 8202, and the like. In some embodiments, the transceiver module is configured to transceive information. Optionally, the transceiver module is configured to perform at least one of the steps of transmitting and / or receiving and the like in the communication performed by the second network device in any of the methods described above, which will not be repeated here. In some embodiments, the transceiver module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0402] FIG. 8c is a structural diagram of a terminal 8300 according to an embodiment of the present disclosure. As shown in FIG. 8c, the terminal 8300 can include at least one of a transceiver module 8301, a processing module 8302, and the like. In some embodiments, the transceiver module is configured to transceive information. Optionally, the transceiver module is configured to perform at least one of the steps of transmitting and / or receiving and the like in the communication performed by the terminal in any of the methods described above, which will not be repeated here. In some embodiments, the transceiver module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be mutually replaced with a transceiver.

[0403] In some embodiments, the processing module can be a module or can include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be mutually replaced with a processor.

[0404] FIG. 9a is a structural diagram of a communication device 9100 according to an embodiment of the present disclosure. The communication device 9100 can be a network device (such as an access network device, a core network device, and the like), a terminal (such as a user equipment, and the like), a chip, a chip system, or a processor supporting the network device to implement any of the methods described above, or a chip, a chip system, or a processor supporting the terminal to implement any of the methods described above. The communication device 9100 can be used to implement the methods described in the above method embodiments, which can be referred to the descriptions in the above method embodiments.

[0405] As shown in FIG. 9a, the communication device 9100 includes one or more processors 9101. The processor 9101 can be a general purpose processor or a special purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be configured to process communication protocols and communication data, and the central processing unit can be configured to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, and the like), execute programs, and process data of the programs. The communication device 9100 is configured to perform any of the methods described above.

[0406] In some embodiments, the communication device 9100 further includes one or more memories 9102 for storing instructions. Optionally, all or part of the memories 9102 can also be outside the communication device 9100.

[0407] In some embodiments, the communication device 9100 further includes one or more transceivers 9103. When the communication device 9100 includes one or more transceivers 9103, the transceiver 9103 performs at least one of the communication steps such as transmitting and / or receiving in the above-described methods, and the processor 9101 performs at least one of the other steps.

[0408] In some embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Optionally, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced with each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced with each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced with each other.

[0409] In some embodiments, the communication device 9100 can include one or more interface circuits 9104. Optionally, the interface circuit 9104 is connected with the memory 9102, and the interface circuit 9104 can be used to receive signals from the memory 9102 or other devices, and can be used to send signals to the memory 9102 or other devices. For example, the interface circuit 9104 can read the instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0410] The communication device 9100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 can not be limited by Figure 9a. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, optionally, the set of ICs can also include storage components for storing data, programs; (3) an ASIC, such as a Modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0411] Figure 9b is a structural schematic diagram of a chip 9200 according to an embodiment of the present disclosure. For the case where the communication device 9100 is a chip or a chip system, the structural schematic diagram of the chip 9200 shown in Figure 9b can be referred to, but is not limited thereto.

[0412] The chip 9200 comprises one or more processors 9201, and the chip 9200 is configured to execute any of the above methods.

[0413] In some embodiments, the chip 9200 further comprises one or more interface circuits 9202. Optionally, the interface circuit 9202 is connected with the memory 9203, and the interface circuit 9202 can be configured to receive signals from the memory 9203 or other devices, and the interface circuit 9202 can be configured to send signals to the memory 9203 or other devices. For example, the interface circuit 9202 can read instructions stored in the memory 9203 and send the instructions to the processor 9201.

[0414] In some embodiments, the interface circuit 9202 performs at least one of the communication steps such as sending and / or receiving in the above methods, and the processor 9201 performs at least one of the other steps.

[0415] In some embodiments, the terms of interface circuit, interface, transceiver pin, transceiver, etc. can be replaced with each other.

[0416] In some embodiments, the chip 9200 further comprises one or more memories 9203 configured to store instructions. Optionally, all or part of the memory 9203 can be outside the chip 9200.

[0417] The disclosure further proposes a storage medium, and the storage medium stores instructions, and when the instructions run on the communication device 9100, the communication device 9100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a transitory storage medium.

[0418] The disclosure further proposes a program product, and when the program product is executed by the communication device 9100, the communication device 9100 executes any of the above methods. Optionally, the program product is a computer program product.

[0419] The disclosure further proposes a computer program, and when the computer program runs on a computer, the computer executes any of the above methods.

Claims

1. A communication method characterized by comprising: The method is performed by a first network device, and the method comprises: sending first information to a second network device; wherein the first network device belongs to a second type network; and the first information is used to indicate at least one of the following: the terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration in a first type network and the second type network; reservation of registration information of the terminal in the first type network.

2. The method of claim 1, wherein, The sending of the first information to the second network device comprises: the terminal registers to the second type network and sends the first information to the second network device.

3. The method according to claim 1 or 2, characterized in that, The registration of the terminal to the second type network has been completed before the registration in the first type network, and the second network device has saved the registration information of the terminal in the first type network.

4. The method according to any one of claims 1 to 3, characterized in that, In the registration process of the terminal to the first type network, the terminal is authorized to use or is not authorized to use the first mode.

5. The method according to any one of claims 1 to 3, characterized in that, In the registration process of the terminal to the second type network, the terminal is authorized to use or is not authorized to use the first mode.

6. The method according to claim 4 or 5, characterized in that, The terminal is authorized to use or is not authorized to use the first mode by the first network device based on user subscription information, or the terminal is authorized to use or is not authorized to use the first mode by the second network device based on user subscription information.

7. The method of claim 6, wherein, The priority of a first authorization result obtained in the registration process of the second type network is higher than the priority of a second authorization result obtained in the registration process of the first type network; the first authorization result is that the terminal is authorized to use or is not authorized to use the first mode; and the second authorization result is that the terminal is authorized to use or is not authorized to use the first mode.

8. The method according to any one of claims 4 to 7, characterized in that, The method further comprises: receiving an authorization result from the second network device; wherein the authorization result comprises the first authorization result and / or the second authorization result.

9. The method of claim 8, wherein, The method further comprises: sending the authorization result to the terminal.

10. The method according to any one of claims 1 to 9, characterized in that, The method further comprises: receiving second information sent by the terminal; wherein the second information is used to indicate a first global unique temporary terminal identity (GUTI), the first GUTI being used to complete registration in the second type network, the first GUTI being an identity allocated to the terminal by the second type network, or the first GUTI being determined according to a second GUTI allocated to the terminal by the first type network.

11. The method of claim 10, wherein, The receiving of the second information sent by the terminal comprises: receiving a registration request message sent by the terminal; wherein the registration request message contains the second information.

12. The method of claim 11, wherein, The registration request message contains third information, and the third information is used to indicate that the terminal uses the first mode.

13. The method according to any one of claims 1 to 12, characterized in that, The method further comprises: obtaining fourth information from a third network device; wherein the third network device belongs to the first type network; and the fourth information comprises at least one of the following: mobility management (MM) context information of the terminal in the first type network; session management (SM) context information of the terminal in the first type network.

14. A communication method, comprising: The method is performed by a second network device, and the method comprises: receiving first information sent by a first network device; wherein the first network device belongs to a second type network; and the first information is used for indicating at least one of the following: the terminal uses a first mode, the first mode being a mode supported by the terminal and supporting registration in the first type network and the second type network simultaneously; reserving registration information of the terminal in the first type network.

15. The method of claim 14, wherein, The receiving of the first information sent by the first network device comprises: the terminal registers to the second type network and receives the first information sent by the first network device.

16. The method according to claim 14 or 15, wherein the registration in the first type network has been completed before the terminal registers to the second type network, and the second network device saves the registration information of the terminal in the first type network.

17. The method according to any one of claims 14 to 16, characterized in that, The method further comprises at least one of the following: in a registration process to the first type network, performing an authorization operation of the terminal using the first mode to obtain a first authorization result; in a registration process to the second type network, performing an authorization operation of the terminal using the first mode to obtain a second authorization result; wherein the first authorization result is that the terminal is authorized to use or is not authorized to use the first mode; and the second authorization result is that the terminal is authorized to use or is not authorized to use the first mode.

18. The method of claim 17, wherein, The performing of the authorization operation of the terminal using the first mode comprises: performing the authorization operation of the terminal using the first mode based on user subscription information.

19. The method of claim 17 or 18, wherein, The priority of the first authorization result is higher than the priority of the second authorization result.

20. The method of any one of claims 17-19, wherein, The method further comprises: sending an authorization result to the first network device; wherein the authorization result comprises the first authorization result and / or the second authorization result.

21. The method of claim 20, wherein, The method further comprises: sending fifth information to a third network device; wherein the third network device belongs to the first type network; and the fifth information is used for indicating deregistration of the terminal from the first type network.

22. A method of communication, comprising: The method is performed by a terminal, and the method comprises: sending second information to a first network device; wherein the second information is used for indicating a first globally unique temporary terminal identifier (GUTI), the first GUTI being used for completing registration in a second type network, the first GUTI being an identifier allocated to the terminal by the second type network, or the first GUTI being determined according to a second GUTI allocated to the terminal by the first type network.

23. The method of claim 22, wherein, The registration request message contains third information, and the third information is used for indicating that the terminal uses the first mode.

24. The method of any one of claims 22-23, wherein, The method further comprises: receiving an authorization result sent by the first network device; wherein the authorization result is that the terminal is authorized to use or is not authorized to use the first mode.

25. The method of claim 24, wherein, In a registration process of the terminal to the first type network, the terminal is authorized to use or is not authorized to use the first mode.

26. The method of any one of claim 24, wherein, In the registration procedure in which the terminal registers to the second type network, the terminal is authorized to use or is not authorized to use the first mode.

27. The method of claim 25 or 26, wherein, The terminal is authorized to use or is not authorized to use the first mode by the first network device based on user subscription information, or the terminal is authorized to use or is not authorized to use the first mode by the second network device based on user subscription information.

28. The method of any one of claims 24-27, wherein, The authorization result includes a first authorization result and / or a second authorization result; the first authorization result is an authorization result obtained in the registration procedure of the second type network; The second authorization result is an authorization result obtained in the registration procedure of the first type network; The first authorization result is that the terminal is authorized to use or is not authorized to use the first mode; the second authorization result is that the terminal is authorized to use or is not authorized to use the first mode; the priority of the first authorization result is higher than the priority of the second authorization result.

29. A method of communication, comprising: The method comprises: The first network device sends first information to the second network device; The first network device belongs to the second type network; the first information is used to indicate at least one of the following: The terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration to the first type network and the second type network; The registration information of the terminal in the first type network is reserved.

30. A first network device, comprising: The first network device comprises: The transceiver module is configured to: Send first information to the second network device; The first network device belongs to the second type network; the first information is used to indicate at least one of the following: The terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration to the first type network and the second type network; The registration information of the terminal in the first type network is reserved.

31. A second network device, comprising: The second network device comprises: The transceiver module is configured to: Receive the first information sent by the first network device; The first network device belongs to the second type network; the first information is used to indicate at least one of the following: The terminal uses a first mode, the first mode being a mode in which the terminal supports simultaneous registration to the first type network and the second type network; The registration information of the terminal in the first type network is reserved.

32. A terminal, characterized by The terminal comprises: The transceiver module is configured to: Send second information to the first network device; The second information is used to indicate a first globally unique temporary terminal identifier (GUTI); the first GUTI is used to complete registration to the second type network; the first GUTI is an identifier allocated to the terminal by the second type network, or the first GUTI is determined according to a second GUTI allocated to the terminal by the first type network.

33. A communication system including a first network device, a second network device and a terminal, the first network device being configured to implement the method of any one of claims 1 to 13, the second network device being configured to implement the method of any one of claims 14 to 21, and the terminal being configured to implement the method of any one of claims 22 to 28.

34. A first network device, comprising: The first network device comprises: one or more processors; wherein the first network device is configured to perform the method of any one of claims 1 to 13.

35. A second network device, comprising: The second network device comprises: one or more processors; wherein the second network device is configured to perform the method of any one of claims 14 to 21.

36. A terminal, characterized by The terminal comprises: one or more processors; wherein the terminal is configured to perform the method of any one of claims 22 to 28.

37. A computer program product comprising computer programs or instructions, characterized in that, The computer program or instructions, when executed on the processor, implement the steps of the method of any one of claims 1 to 13, 14 to 21 and / or 22 to 28.

38. A storage medium characterized by The storage medium stores instructions which, when executed on the communication device, cause the communication device to perform the method of any one of claims 1 to 13, 14 to 21 and / or 22 to 28.

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