Communication methods, communication apparatus, and storage medium

Abstract

Provided in the present disclosure are communication methods, a communication apparatus, devices and a storage medium. A communication method is executed by a first device, the first device comprising a first communication assembly having a first identifier and a second communication assembly having a second identifier. The communication method comprises: after a first device registers with a first network using a first identifier, determining a network accessed by the first device using a second identifier. Thus, after it is determined that a dual 3GPP access device registers with a first network using a first identifier, a network accessed by the dual 3GPP access device using a second identifier can be determined, so that the network access efficiency of dual 3GPP access devices can be improved.

Description

Communication method, apparatus and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, apparatus and storage medium. BACKGROUND

[0002] The dual 3GPP access device can be a single terminal with dual universal subscriber identity modules (USIMs), or two separate terminals each with a USIM. Different subscription permanent identifiers (SUPIs) of the dual 3GPP access device can access the same or different public land mobile networks (PLMNs).

[0003] SUMMARY

[0004] The present disclosure provides a communication method, apparatus, communication device, communication system and storage medium.

[0005] According to a first aspect of embodiments of the present disclosure, a communication method is provided, performed by a first device, the first device comprising a first communication component with a first identity and a second communication component with a second identity, the method comprising: determining, after the first device registers to a first network using the first identity, a network accessed by the first device using the second identity.

[0006] In the above method, the network accessed by the first device using the second identity can be determined, and the efficiency of the first device accessing the network can be improved.

[0007] According to a second aspect of embodiments of the present disclosure, a communication method is provided, performed by a second device, the method comprising: sending, to a first device, second information, the second information being used to assist the first device in determining first information, the first device comprising a first communication component with a first identity and a second communication component with a second identity, the first information being used by the first device to determine a network accessed by the first device using the second identity after the first device registers to a first network using the first identity.

[0008] In the above method, the second device can assist the first device in determining the network accessed by the first device using the second identity by sending the second information, and the network selection efficiency of the first device can be improved.

[0009] According to a third aspect of embodiments of the present disclosure, a first device is provided, comprising a processing module configured to determine, after the first device registers to a first network using a first identity, a network accessed by the first device using a second identity.

[0010] According to a fourth aspect of the embodiments of the present disclosure, a second device is provided, comprising a transceiver configured to send second information to a first device, the second information being used to assist the first device to determine first information, the first device comprising a first communication component with a first identity and a second communication component with a second identity, the first information being used by the first device to determine a network accessed by the first device using the second identity after the first device registers to a first network using the first identity.

[0011] According to a fifth aspect of the embodiments of the present disclosure, a communication device is provided, comprising: a transceiver; a memory; and a processor connected with the transceiver and the memory respectively, configured to control the transceiver to receive and send wireless signals by executing computer executable instructions on the memory, and capable of executing the method in any of the embodiments of the first aspect or the second aspect.

[0012] According to a sixth aspect of the embodiments of the present disclosure, a storage medium is provided, which stores instructions, when the instructions are executed on a communication device, causing the communication device to execute the method in any of the embodiments of the first aspect or the second aspect.

[0013] According to a seventh aspect of the embodiments of the present disclosure, a communication system is provided, comprising a first device and a second device, wherein the first device is configured to implement the method in the embodiments of the first aspect, and the second device is configured to implement the method in the embodiments of the second aspect. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and / or additional aspects and advantages of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, wherein:

[0015] FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure;

[0016] FIG. 2 is a schematic diagram of an interaction of a communication method according to an embodiment of the present disclosure;

[0017] FIGS. 3a-3b are schematic diagrams of flows of some communication methods according to embodiments of the present disclosure;

[0018] FIGS. 4a-4c are schematic diagrams of flows of some communication methods according to embodiments of the present disclosure;

[0019] FIG. 5 is a schematic diagram of an interaction of another communication method according to an embodiment of the present disclosure;

[0020] FIG. 6 is a schematic diagram of a flow of a network selection method in a dual connectivity scenario according to an embodiment of the present disclosure;

[0021] FIG. 7 is a schematic diagram of a flow of another network selection method in a dual connectivity scenario according to an embodiment of the present disclosure;

[0022] FIG. 8a is a structural schematic diagram of a first device provided by an embodiment of the present disclosure;

[0023] FIG. 8b is a structural schematic diagram of a second device provided by an embodiment of the present disclosure;

[0024] FIG. 9a is a structural schematic diagram of a communication device provided by an embodiment of the present disclosure;

[0025] FIG. 9b is a structural schematic diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure provide a communication method and device, a communication device, a communication system, and a storage medium.

[0027] In a first aspect, embodiments of the present disclosure provide a communication method, the method is performed by a first device, the first device includes a first communication component with a first identifier and a second communication component with a second identifier, and the method includes: after the first device registers to a first network using the first identifier, determining a network accessed by the first device using the second identifier.

[0028] In the above embodiment, the network accessed by the first device using the second identifier can be determined, and the efficiency of the first device accessing the network can be improved.

[0029] In combination with some embodiments of the first aspect, in some embodiments, determining the network accessed by the first device using the second identifier includes: determining the network accessed by the first device using the second identifier based on first information and / or second information, wherein the first information and / or the second information is used to indicate a correspondence between the first identifier and / or the second identifier and network information.

[0030] In the above embodiment, the network accessed by the first device using the second identifier can be determined, and the network selection efficiency of the first device can be improved.

[0031] In combination with some embodiments of the first aspect, in some embodiments, the network information includes at least one of the following: an access network type; an identifier of a public land mobile network (PLMN); and a network access priority.

[0032] In the above embodiment, the network information of the network that the first device can access is constituted, and the network selection efficiency of the first device is improved.

[0033] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: determining the first information, the first information being information preconfigured in the first device.

[0034] In the above embodiment, the first information can be determined, so as to facilitate the first device to determine the network accessed by the first device using the second identifier according to the first information, and improve the network selection efficiency of the first device.

[0035] In some embodiments of the first aspect, in some embodiments, the second information includes at least one of the following: registration information of the first device registered to the first network using the first identifier; registration information of the first device at the last registration; wherein the registration information is used to indicate network information registered by the first identifier and / or the second identifier.

[0036] In the above embodiment, the second information can be determined, so as to facilitate the first device to determine the network accessed by the first device using the second identifier according to the second information, and improve the network selection efficiency of the first device.

[0037] In some embodiments of the first aspect, in some embodiments, the second information includes at least one of the following: network information determined by the second device and available for the first device to access using the second identifier; network information received by the second device from the fourth device and available for the first device to access using the second identifier.

[0038] In the above embodiment, the second information can be determined, so as to facilitate the first device to determine the network accessed by the first device using the second identifier according to the second information, and improve the network selection efficiency of the first device.

[0039] In some embodiments of the first aspect, in some embodiments, the method further includes: sending third information to the second device, the third information being used to identify network information available to the first device at a current location; wherein the second information is determined according to the third information.

[0040] In the above embodiment, the first device can send the third information to the second device, so as to facilitate the second device to determine the second information based on the third information, and facilitate the first device to determine the network accessed by the first device using the second identifier according to the second information, and improve the network selection efficiency of the first device.

[0041] In some embodiments of the first aspect, in some embodiments, based on the first information and / or the second information, determining the network accessed by the first device using the second identifier includes: determining the network accessed by the first device using the second identifier according to the first rule based on the first information and / or the second information.

[0042] In the above embodiment, the network accessed by the first device using the second identifier can be determined, and the efficiency of the first device to access the network is improved.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the first rule includes at least one of the following: preferentially selecting the Home Public Land Mobile Network (HPLMN) to which the first device is subscribed as the network for the first device to access using the second identifier; under a first condition, preferentially selecting an access network type and / or HPLMN different from the first network as the network for the first device to access using the second identifier, wherein the first condition is that the first device has already registered to the subscribed HPLMN using the first identifier; under a second condition, determining the network for the first device to access using the second identifier according to network priority as the network for the first device to access using the second identifier, wherein the second condition is that there is currently no HPLMN available; under a third condition, preferentially selecting a network having a second PLMN and a second access type as the network for the first device to access using the second identifier, wherein the second PLMN is the same as the first PMLN and the second access type is different from the first access type, wherein the third condition is that the first network has a first access type and a first PLMN.

[0044] In the above embodiments, a first rule can be determined, which can be used to assist in determining the network accessed by the first device using the second identifier, thereby improving the efficiency of the first device accessing the network.

[0045] In some embodiments, in conjunction with the first aspect, the method further includes: registering to the network using a second identifier; and after registration, saving the network information used by the first device.

[0046] In the above embodiments, the first device can save the network information used. In other words, regardless of whether the network information is accessed using the first identifier or the second identifier, saving this network information allows the first device to provide a reference for the next network access, thereby improving network selection efficiency and increasing network access success rate and accuracy.

[0047] Secondly, this disclosure provides a communication method executed by a second device. The method includes: sending second information to a first device, the second information being used to assist the first device in determining first information, the first device including a first communication component having a first identifier and a second communication component having a second identifier, the first information being used by the first device to determine the network accessed by the first device using the second identifier after the first device registers with the first identifier to the first network.

[0048] In the above embodiments, the second device can assist the first device in determining the network accessed by the first device using the second identifier by sending second information, thereby improving the network selection efficiency of the first device.

[0049] In conjunction with some embodiments of the second aspect, in some embodiments, the first information and / or the second information are used to indicate the correspondence between the first identifier and / or the second identifier and the network information.

[0050] In the above embodiment, the first information can be determined, so as to facilitate the first device to determine the network accessed by the first device using the second identifier according to the first information, and improve the network selection efficiency of the first device.

[0051] In combination with some embodiments of the second aspect, in some embodiments, the network information comprises at least one of: an access network type; an identifier of a public land mobile network (PLMN); and a network access priority.

[0052] In the above embodiment, the constitution of the network information of the network that the first device can access can be determined, so as to facilitate the first device to determine the network accessed by the first device using the second identifier according to the correspondence between the first identifier and / or the second identifier and the network information, and improve the network selection efficiency of the first device.

[0053] In combination with some embodiments of the second aspect, in some embodiments, the second information comprises at least one of: registration information of the first device registered to the first network using the first identifier; and registration information of the first device at the last registration; wherein the registration information is used to indicate the network information registered by the first identifier and / or the second identifier.

[0054] In the above embodiment, the second information can be determined, so as to facilitate the first device to determine the network accessed by the first device using the second identifier according to the second information, and improve the network selection efficiency of the first device.

[0055] In combination with some embodiments of the second aspect, in some embodiments, the second information comprises at least one of: network information determined by the second device and available for the first device to access using the second identifier; and network information received by the second device from the fourth device and available for the first device to access using the second identifier.

[0056] In the above embodiment, the second information can be determined, so as to facilitate the first device to determine the network accessed by the first device using the second identifier according to the second information, and improve the network selection efficiency of the first device.

[0057] In combination with some embodiments of the second aspect, in some embodiments, the method further comprises: receiving third information sent by the first device, the third information being used to identify network information available for the first device at a current location; and obtaining fourth information from the third device, the fourth information being used to indicate network information accessible by the first device; wherein the second information is determined by the second device or the fourth device according to the third information and / or the fourth information.

[0058] In the above embodiment, the second device can obtain the third information and the fourth information, so as to facilitate the second device to determine the second information based on the third information and / or the fourth information, facilitate the first device to determine the network accessed by the first device using the second identifier according to the second information, and improve the network selection efficiency of the first device.

[0059] In some embodiments combined with the second aspect, in some embodiments, the method further includes: determining the second information according to the third information and / or the fourth information.

[0060] In the above embodiments, the second device can determine the second information, which facilitates the first device to determine the network accessed by the first device using the second identifier according to the second information, and improves the network selection efficiency of the first device.

[0061] In some embodiments combined with the second aspect, in some embodiments, the method further includes: sending the third information and / or the fourth information to a fourth device; and receiving the second information sent by the fourth device, the second information being determined by the fourth device according to the third information and / or the fourth information.

[0062] In the above embodiments, the second device can send the third information and / or the fourth information to the fourth device, which facilitates the fourth device to determine the second information, facilitates the first device to determine the network accessed by the first device using the second identifier according to the second information, and improves the network selection efficiency of the first device.

[0063] In a third aspect, the embodiments of the present disclosure provide a first device, including a processing module, configured to determine a network accessed by the first device using a second identifier after the first device registers to a first network using a first identifier.

[0064] In a fourth aspect, the embodiments of the present disclosure provide a second device, including a transceiver module, configured to send second information to a first device, the second information being used to assist the first device to determine first information, the first device including a first communication component having a first identifier and a second communication component having a second identifier, the first information being used by the first device to determine the network accessed by the first device using the second identifier after the first device registers to a first network using the first identifier.

[0065] In a fifth aspect, the embodiments of the present disclosure provide a communication device, and the above includes: a processor configured to invoke instructions to cause the communication device to perform the method described in the optional implementation manners of the first aspect and the second aspect of the present disclosure.

[0066] In a sixth aspect, the embodiments of the present disclosure provide a communication system, and the above communication system includes: a first device and a second device; wherein the first device is configured to perform the method described in the first aspect and the optional implementation manners of the first aspect, and the second device is configured to perform the method described in the second aspect and the optional implementation manners of the second aspect.

[0067] In the above embodiments, the communication system further comprises a third device and / or a fourth device, the third device is configured to provide fourth information to the second device, the fourth information is used to indicate network information that the first device can access; and the fourth device is configured to determine the second information according to the third information provided by the second device and the fourth information.

[0068] In a seventh aspect, the embodiments of the present disclosure provide a storage medium, the computer storage medium stores computer executable instructions; the computer executable instructions are executed by a processor, and the computer executable instructions can execute the method described in the first aspect or the optional implementation manner of the first aspect, or the computer executable instructions can execute the method described in the second aspect or the optional implementation manner of the second aspect.

[0069] It can be understood that the first device, the second device, the communication device, the communication system and the storage medium are all used to execute the method provided by the embodiments of the present disclosure. Therefore, the beneficial effects achieved by the first device, the second device, the communication device, the communication system and the storage medium can refer to the beneficial effects in the corresponding method, which will not be described here again.

[0070] The embodiments of the present disclosure provide a communication method and device, a communication device, a communication system and a storage medium. In some embodiments, the communication method and the information processing method, the communication method and other terms can be replaced with each other, the device and the terminal, the network device, the communication device and other terms can be replaced with each other, and the information processing system, the communication system and other terms can be replaced with each other.

[0071] 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 manners 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 manners of other embodiments.

[0072] In the embodiments 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 new embodiments according to their inherent logical relationship.

[0073] 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.

[0074] In the embodiments of the present disclosure, an element represented 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.

[0075] In the embodiments of the present disclosure, "plurality" refers to two or more.

[0076] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", and the like can be replaced with each other.

[0077] In the embodiments of the present disclosure, the description manner such as "at least one of A, B, C, and the like", "A and / or B and / or C, and the like" includes any one of A, B, C, and the like existing alone, and also includes any combination of any multiple of A, B, C, and the like, each of which can exist alone; for example, "at least one of A, B, C" includes the cases of A alone, B alone, C alone, A and B in combination, A and C in combination, B and C in combination, A and B and C in combination; for example, A and / or B includes the cases of A alone, B alone, and the combination of A and B.

[0078] In some embodiments, the description manner such as "A in one case, and B in another case", "in response to case A, in response to case B", and the like, according to the case, can include the following technical solutions: A is executed regardless of B, that is, A in some embodiments; B is executed regardless of A, that is, B in some embodiments; A and B are selectively executed, that is, A and B are selected from A and B to be executed in some embodiments; A and B are both executed, that is, A and B in some embodiments. When there are more branches such as A, B, C, and the like, it is similar to the above.

[0079] 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.

[0080] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0081] 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.

[0082] 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.

[0083] In some embodiments, an apparatus or the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments, and the terms "apparatus", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0084] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", "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", "carrier", "component carrier", "bandwidth part (BWP)" and the like can be replaced with each other.

[0085] In some embodiments, the terms "terminal," "terminal device," "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," and so on can be replaced with each other.

[0086] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, for a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (for example, also referred to as device-to-device (D2D), vehicle-to-everything (V2X), and so on), embodiments of the present disclosure can also be applied. In this case, a structure in which a terminal has all or part of the functions of an access network device can also be provided. Furthermore, the language of "uplink," "downlink," and so on can also be replaced with language corresponding to communication between terminals (for example, "side"). For example, an uplink channel, a downlink channel, and so on can be replaced with a side channel, and an uplink, a downlink, and so on can be replaced with a side link.

[0087] In some embodiments, a terminal can be replaced with an access network device, a core network device, or a network device. In this case, a structure in which an access network device, a core network device, or a network device has all or part of the functions of a terminal can also be provided.

[0088] In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", "chip", and the like can be replaced with each other.

[0089] In some embodiments, terms such as "uplink", "uplink", "physical uplink", and the like can be replaced with each other, terms such as "downlink", "downlink", "physical downlink" and the like can be replaced with each other, terms such as "side", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct connection link", "direct connection", "direct connection link communication" and the like can be replaced with each other.

[0090] In some embodiments, terms such as "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI", and the like can be replaced with each other.

[0091] In some embodiments, terms such as "physical downlink shared channel (PDSCH)", "DL data", and the like can be replaced with each other, and terms such as "physical uplink shared channel (PUSCH)", "UL data", and the like can be replaced with each other.

[0092] In some embodiments, terms such as "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like can be replaced with each other.

[0093] In some embodiments, the terms "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", "pilot signal" and the like can be replaced with each other.

[0094] In some embodiments, the terms "moment", "time point", "time", "time position" and the like can be replaced with each other, and the terms "time length", "time period", "time window", "window", "time" and the like can be replaced with each other.

[0095] In some embodiments, "acquire", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" and the like can be replaced with each other, which can be interpreted as receiving from other subjects, obtaining from protocols, obtaining by oneself, autonomously implementing and the like.

[0096] In some embodiments, the terms "send", "transmit", "report", "issue", "transmit", "bidirectional transmission", "send and / or receive" and the like can be replaced with each other.

[0097] In some embodiments, "predetermined" and "preset" can be interpreted as being previously specified in protocols and the like, or can be interpreted as being previously set by devices and the like.

[0098] In some embodiments, determining can be interpreted as judging, deciding, judging, calculating, computing, processing, deriving, investigating, searching, looking up, retrieving, inquiring, ascertaining, receiving, transmitting, inputting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, "assuming", "expecting", "considering", broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but is not limited thereto.

[0099] In some embodiments, determining or judging can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited thereto.

[0100] In some embodiments, "network" can be interpreted as devices (for example, access network devices, core network devices, etc.) contained in the network.

[0101] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or can be interpreted as, after receiving data, etc., not performing subsequent processing on the data, etc.; "not expecting to send" can be interpreted as not sending, or can be interpreted as sending but not expecting the receiving party to respond to the content of the sending.

[0102] In some embodiments, obtaining data, information, etc. can comply with the laws and regulations of the country where the location is located.

[0103] In some embodiments, data, information, etc. can be acquired after obtaining user consent. To solve the above problems, the present disclosure proposes a communication method and device, a communication device, a communication system, and a storage medium.

[0104] The dual 3GPP access device has two subscription permanent identifiers (SUPIs) and can share profiles from the same operator. At any given point in time, each SUPI of the dual 3GPP access device can be used to connect to only one 3GPP access.

[0105] Optionally, the name of the dual 3GPP device can also be a "dual connectivity device", a "dual steering device", a "dual steer device", etc. In the present application, the above names can be replaced with each other.

[0106] The present application can be applied to the following scenarios:

[0107] 1. Both SUPIs access a PLMN using NR / 5GC access, and the PLMN can be a home public land mobile network (HPLMN) or a visited public land mobile network (VPLMN). The accessed network can be an NR terrestrial network (NR TN) or an NR non-terrestrial network (NR NTN).

[0108] 2. Both SUPIs access different PLMNs using NR / 5GC access, and the PLMN can be an HPLMN or a VPLMN. The accessed network can be an NR TN or an NR NTN.

[0109] 3. Two SUPIs access different PLMNs using NR / 5GC access and E-UTRA / EPC access, respectively, and the PLMN can be an HPLMN or a VPLMN.

[0110] 4. Two SUPIs access the same PLMN using NR / 5GC access and E-UTRA / EPC access, respectively, and the PLMN can be an HPLMN or a VPLMN.

[0111] 5. PNI-NPN (integrated with an HPLMN or integrated with a VPLMN) and PLMN access (TN / NTN plus TN or NTN).

[0112] In order to enable dual connectivity function and support the above scenarios, the architecture of the dual connectivity device can refer to the following.

[0113] 1. Non-roaming dual connectivity architecture with two 3GPP accesses belonging to the same PLMN.

[0114] 2. Dual connectivity architecture with one access being a roaming access and the other access being a non-roaming access.

[0115] 3. Roaming dual connectivity architecture with two roaming accesses to the same VPLMN.

[0116] 4. Roaming dual connectivity architecture with two roaming accesses to two different VPLMNs.

[0117] After the dual connectivity device completes registration through one 3GPP access using one of the two SUPIs, how the device decides to register to the second 3GPP access network and how the terminal selects the 3GPP access network is a problem to be solved.

[0118] In order to solve the above problem, the present scheme proposes a communication method, which can determine the second 3GPP access network of the dual connectivity device and how the terminal selects the 3GPP access network after the dual connectivity device completes registration through one 3GPP access using one of the two SUPIs.

[0119] The specific content of the method is as follows.

[0120] FIG. 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG. 1, the communication system 100 can include a first device 101 and a second device 102.

[0121] In some embodiments, the communication system further includes a third device configured to provide fourth information to the second device, the fourth information being used to indicate network information that the first device can access, and a fourth device configured to determine the second information according to the third information provided by the second device and the fourth information.

[0122] In some embodiments, the first device can be a dual 3GPP access device, which has a dual 3GPP access function, and the device can be a single terminal, or the device can be two terminals, each of which has a separate SUPI, and the two terminals are associated through a dual steering layer.

[0123] In some embodiments, optionally, the second device can be a network device, and the second device can be a radio access network (RAN) and all core network nodes in a device communication process, but specifically can be a core network node, such as an Access and Mobility Management Function (AMF) (optionally, the AMF can be an AMF of a VPLMN or an AMF of a HPLMN).

[0124] In some embodiments, optionally, the third device can be a network device, and specifically, the third device can be a core network node, such as a home network device of the first device, such as a PCF, a Unified Data Management (UDM), an SMF, and the like, and specifically can be a UDM.

[0125] In some embodiments, optionally, the fourth device can be a network device, and specifically can be a core network node, such as a home network device of the first device (such as a PCF, a UDM, an SMF, and the like), and specifically can be a PCF.

[0126] In some embodiments, the terminal includes at least one of a mobile phone, a wearable device, an Internet of Things device, a communication-capable car, a smart car, a Pad, a computer with wireless transceiver function, 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.

[0127] In some embodiments, the "network device" can be an access network device, such as a base station. Alternatively, the network device can also be a broad sense network device including a core network device. In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network, and the access network device can include at least one of an evolved node B (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation node B (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 base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0128] In some embodiments, the technical solutions of the present disclosure can be applicable to an Open RAN architecture, at this time, 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 realized through software or programs.

[0129] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), wherein 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, and part of the functions of the protocol layers are controlled by the CU, and the remaining part or all of the functions of the protocol layers are distributed in the DU and controlled by the CU, but is not limited thereto.

[0130] 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 each including all or part of the one or more network elements. The network element can be virtual or physical. The core network includes, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0131] In some embodiments, the one or more network elements described above can include, for example, an AMF, a UPF, an MME, and the like, and can also include other network elements such as a policy control function (PCF), an application function (AF), a network application function (NAF), an authentication and key management for applications anchor function (AAnF), a bootstrapping server function (BSF), a session management function (SMF), and the like.

[0132] 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 proposed in the embodiments of the present disclosure. It can be known by those skilled in the art that, as the system architecture evolves and new business scenarios appear, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0133] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1 or part of the subject, but are not limited thereto. The subjects shown in FIG. 1 are exemplary, and the communication system can include all or part of the subjects in FIG. 1, or other subjects other than those in FIG. 1. The number and form of each subject is arbitrary, and the connection relationship between the subjects is exemplary. The subjects can not be connected or can be connected, and the connection can be in any manner, can be direct connection or indirect connection, and can be wired connection or wireless connection.

[0134] 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. In addition, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0135] FIG. 2 is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2, the embodiment of the present disclosure relates to a communication method for a communication system 100, which can include a first device 101 and a second device 102. In some embodiments, the above method includes:

[0136] In step 2101, the first device determines first information.

[0137] In some embodiments, the first device comprises a first communication component with a first identity and a second communication component with a second identity, wherein the first information is used by the first device to determine a network accessed by the first device using the second identity after the first device registers to the first network using the first identity.

[0138] For example, the first communication component can be a terminal 1 of the first device, or can be a USIM 1 of the first device; the second communication component can be a terminal 2 of the first device, or can be a USIM 2 of the first device.

[0139] For example, the first identity can be SUPI#1; the second identity can be SUPI#2.

[0140] In some embodiments, the first information is information preconfigured in the first device, and the first information can be information preconfigured for the first device, for example, the first information can be preconfigured network selection information.

[0141] In some embodiments, the first information is used to indicate a correspondence between the first identity and / or the second identity and the network information.

[0142] In some embodiments, the network information comprises at least one of:

[0143] an access type;

[0144] an identity of a public land mobile network (PLMN ID);

[0145] a network access precedence.

[0146] In step 2102, the first device sends third information to the second device.

[0147] In some embodiments, the third information can be used to identify network information available to the first device at a current location.

[0148] In some embodiments, the first device sends the third information to the second device, which can facilitate the second device to determine the second information based on the third information.

[0149] In other words, the first device can report available network information to the network device, which can facilitate the second device to determine the second information based on the available network information of the first device.

[0150] For example, the first device can search for available network information using the second identity, and report the available network information to the network device through a process of the first identity.

[0151] In some embodiments, the second information can be information that the network device issues to the first device, for example, the second information can be network selection information that the network device issues to the first device in the last registration process of the first device.

[0152] In some embodiments, the second information includes at least one of the following:

[0153] The registration information of the first device registered to the first network using the first identifier;

[0154] The registration information of the first device in the last registration;

[0155] The registration information is used to indicate network information registered by the first identifier and / or the second identifier.

[0156] In some embodiments, the second information includes at least one of the following:

[0157] The network information determined by the second device that the first device can access using the second identifier;

[0158] The network information received by the second device from the fourth device that the first device can access using the second identifier.

[0159] The second information is used to assist the first device to determine the first information,

[0160] The second information is determined by the second device or the fourth device according to the third information and / or the fourth information.

[0161] Step 2103, the third device sends the fourth information to the second device.

[0162] In some embodiments, the fourth information can be used to indicate network information that the first device can access.

[0163] In some embodiments, the third device sends the fourth information to the second device, which can facilitate the second device to determine the second information based on the fourth information.

[0164] In other words, the network device can obtain network information that the first device can access, and determine the second information according to the network information that the first device can access.

[0165] Step 2104, the second device sends the third information and / or the fourth information to the fourth device.

[0166] In some embodiments, the second device can send the third information and / or the fourth information to the fourth device, which can facilitate the fourth device to determine the second information based on the third information and / or the fourth information.

[0167] In some embodiments, the fourth device can obtain the third information and / or the fourth information from other subjects, for example, the fourth device can obtain the fourth information from the third device, the fourth device can obtain the third information from the first device, and the like, which are not limited by the present disclosure.

[0168] In other words, the fourth device can determine the second information according to the network information available at the current location of the first device and the network information accessible by the first device, for example, the second information can be network selection information.

[0169] Step 2105, the fourth device determines the second information.

[0170] In some embodiments, the fourth device can determine the second information based on the third information and / or the fourth information.

[0171] In some embodiments, this step is an optional step, which can be omitted when the second device can determine the second information based on the third information and / or the fourth information.

[0172] Step 2106, the fourth device sends the second information to the second device.

[0173] In some embodiments, after determining the second information, the fourth device can send the second information to the second device.

[0174] In some embodiments, this step is an optional step, which can be omitted when the second device can determine the second information.

[0175] Step 2107, the second device determines the second information.

[0176] In some embodiments, the second information is determined by the second device or the fourth device according to the third information and / or the fourth information.

[0177] In some embodiments, this step is an optional step, which can be omitted when the fourth device can determine the second information based on the third information and / or the fourth information.

[0178] Step 2108, the second device sends the second information to the first device.

[0179] In some embodiments, the second device can send the second information to the first device, so that the first device determines the network accessed by the first device using the second identifier based on the second information.

[0180] In some embodiments, this step is an optional step, which can be omitted when the first device determines the network accessed by the first device using the second identifier based on only the first information.

[0181] Step 2109, the first device determines the network accessed by the first device using the second identifier.

[0182] In some embodiments, the first device can determine, based on the first information and / or the second information, a network for the first device to access using the second identity, wherein the first information and / or the second information is used to indicate a correspondence between the first identity and / or the second identity and the network information.

[0183] In some embodiments, the network for the first device to access using the second identity can be determined after the first device registers to the first network using the first identity.

[0184] In some optional embodiments, the determining, according to the first rule, of the network for the first device to access using the second identity can follow the following general principles:

[0185] 1. Selecting the HPLMN as the first priority, and if the HPLMN is selected, considering selecting different access types under the HPLMN

[0186] 2. If the HPLMN cannot be selected, selecting the vPLMN, and if the vPLMN has been selected, preferentially selecting other access types under the same vPLMN.

[0187] In some embodiments, specifically, the determining, based on the first information and / or the second information, of the network for the first device to access using the second identity comprises: determining, according to the first rule, based on the first information and / or the second information, the network for the first device to access using the second identity.

[0188] In some embodiments, the first rule comprises at least one of the following:

[0189] Preferentially selecting a home public land mobile network (HPLMN) to which the first device is subscribed as the network for the first device to access using the second identity;

[0190] Under a first condition, preferentially selecting an access network type and / or an HPLMN different from the first network as the network for the first device to access using the second identity, the first condition being that the first device has registered to the subscribed HPLMN using the first identity;

[0191] Under a second condition, determining the network for the first device to access using the second identity according to a network priority as the network for the first device to access using the second identity, the second condition being that there is no HPLMN available for selection at present;

[0192] Under a third condition, preferentially selecting a network having a second PLMN and a second access type as the network for the first device to access using the second identity, the second PLMN being the same as the first PMLN and the second access type being different from the first access type, the third condition being that the first network has the first access type and the first PLMN.

[0193] In some embodiments, for example, the first condition can be that the home public land mobile network (HPLMN) to which the first device is subscribed has been accessed by the first device using the first identity, i.e., at this time, the HPLMN to which the first device is subscribed is the first network, at this time, an access network type and / or HPLMN different from the first network can be selected as the network accessed by the first device using the second identity, i.e., a network type and / or HPLMN different from the network accessed by the first device using the first identity.

[0194] In some embodiments, for example, the second condition can be that no HPLMN is currently available for selection, at this time, the network accessed by the first device using the second identity can be determined according to the priority.

[0195] In some embodiments, for example, the third condition can be that the first network has a first access type and a first PLMN, at this time, the second PLMN can be the same as the first PMLN and the second access type can be different from the first access type, i.e., the first network has a first access type and a first PLMN, then the network accessed by the first device using the second identity can have the same PLMN as the first network but a different access type. For example, when the first device determines the network accessed by the first device using the second identity based on the first information, the first device can directly determine the network accessed using the second identity according to the preconfigured first information.

[0196] For example, when the first device determines the network accessed by the first device using the second identity based on the second information, the first device can directly determine the network accessed using the second identity according to the information issued by the network.

[0197] For example, when the first device can determine the network accessed by the first device using the second identity based on the first information and the second information, the first device can determine the network accessed using the second identity according to the preconfigured information and the information issued by the network.

[0198] In some embodiments, when the first device determines the network accessed by the first device using the second identity based on the first information, the first device can receive information of available networks to facilitate determination of the network accessed by the first device using the second identity.

[0199] In some embodiments, when the first device determines the network accessed by the first device using the second identity based on the second information or based on the first information and the second information, the first device does not need to additionally receive information of selectable networks, which can improve the efficiency of the first device in determining the network accessed using the second identity.

[0200] Step 2110, the first device registers to the network using the second identity.

[0201] In some embodiments, after determining that the first device accesses the network using the second identifier, the first device can register to the corresponding network using the second identifier.

[0202] In step 2111, the first device saves the network information used by the first device after registration is completed.

[0203] In some embodiments, after registration is completed, the first device can save the network information used by the first device, for example, the network registered using the first identifier and the second identifier, for example, in the network selection information of the first device.

[0204] The communication method related to the embodiments of the present disclosure can include at least one of steps 2101-2111. For example, step 2109 can be implemented as an independent embodiment, steps 2101+2102+2103+2104+2105+2106+2107+2108+2109+2110+2111 can be implemented as an independent embodiment, steps 2101+2102+2103+2107+2108+2109+2110+2111 can be implemented as an independent embodiment, steps 2101+2102+2103+2104+2105+2106+2107+2108+2109+2110+2111 can be implemented as an independent embodiment, steps 2101+2109+2110+2111 can be implemented as an independent embodiment, steps 2102+2103+2107+2108+2109+2110+2111 can be implemented as an independent embodiment, steps 2102+2103+2104+2105+2106+2107+2108+2109+2110+2111 can be implemented as an independent embodiment, but not limited thereto.

[0205] In some embodiments, the execution order of steps 2102 and 2103 can be exchanged, or can be executed simultaneously.

[0206] In the present embodiment or embodiment, each step can be independent, arbitrarily combined or the order can be exchanged, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other embodiments.

[0207] FIG. 3a is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3a, the embodiments of the present disclosure relate to a communication method for a first device 101, and the above method comprises:

[0208] In step 3101, the first information is determined.

[0209] The optional implementation of step 3101 can refer to the optional implementation of step 2101 in FIG. 2 and other associated parts in the embodiments to which the steps in FIG. 2 are related.

[0210] In step 3102, the third information is sent.

[0211] The optional implementation of step 3102 can refer to the optional implementation of step 2102 in FIG. 2 and other associated parts in the embodiments to which the steps in FIG. 2 are related.

[0212] In some embodiments, the second device can receive the third information.

[0213] In some embodiments, the first device can send the third information to the second device, but is not limited thereto, and the first device can also send the third information to other subjects.

[0214] In step 3103, the second information is received.

[0215] The optional implementation of step 3103 can refer to the optional implementation of step 2108 in FIG. 2 and other associated parts in the embodiments to which the steps in FIG. 2 are related.

[0216] In some embodiments, the first device receives the second information sent by the second device, but is not limited thereto, and can also receive the second information sent by other subjects.

[0217] In some embodiments, the first device obtains the second information specified by a protocol.

[0218] In some embodiments, the first device obtains the second information from upper layer(s).

[0219] In some embodiments, the first device processes to obtain the second information.

[0220] In step 3104, the network accessed by the first device using the second identifier is determined.

[0221] The optional implementation of step 3104 can refer to the optional implementation of step 2109 in FIG. 2 and other associated parts in the embodiments to which the steps in FIG. 2 are related.

[0222] In step 3105, the network is registered to using the second identifier.

[0223] The optional implementation of step 3105 can refer to the optional implementation of step 2110 in FIG. 2 and other associated parts in the embodiments to which the steps in FIG. 2 are related.

[0224] In step 3106, after the registration is completed, the network information used by the first device is saved.

[0225] The optional implementation of step 3106 can refer to the optional implementation of step 2111 of FIG. 2 and other associated parts in the embodiments involved in the steps of FIG. 2.

[0226] In the embodiments or examples, each step can be independent, arbitrarily combined or exchanged in order, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples without contradiction.

[0227] FIG. 3b is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3b, the embodiment of the present disclosure relates to a communication method for the first device 101, and the above method comprises the following steps:

[0228] Step 3201, determining a network accessed by the first device using a second identifier.

[0229] The optional implementation of step 3201 can refer to the optional implementation of step 2109 of FIG. 2, the optional implementation of step 3104 of FIG. 3a, and other associated parts in the embodiments involved in the steps of FIG. 2 and FIG. 3a.

[0230] FIG. 4a is a flow diagram of 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 for the second device 102, and the above method comprises the following steps:

[0231] Step 4101, receiving third information.

[0232] The optional implementation of step 4101 can refer to the optional implementation of step 2101 of FIG. 2, the optional implementation of step 3102 of FIG. 3a, and other associated parts in the embodiments involved in the steps of FIG. 2 and FIG. 3a.

[0233] In some embodiments, the second device receives the third information sent by the first device, but is not limited thereto, and can also receive the third information sent by other subjects.

[0234] In some embodiments, the second device obtains the third information specified by a protocol.

[0235] In some embodiments, the second device processes to obtain the third information.

[0236] Step 4102, receiving fourth information.

[0237] The optional implementation of step 4102 can refer to the optional implementation of step 2103 of FIG. 2 and other associated parts in the embodiments involved in the steps of FIG. 2.

[0238] In some embodiments, the second device receives the fourth information sent by the third device, but is not limited thereto, and can also receive the fourth information sent by other subjects.

[0239] In some embodiments, the second device obtains the fourth information specified by the protocol.

[0240] In some embodiments, the second device processes to obtain the fourth information.

[0241] Step 4103, sending the third information and / or the fourth information.

[0242] The optional implementation of step 4103 can refer to the optional implementation of step 2104 of FIG. 2 and other associated parts in the embodiments involved in the steps of FIG. 2.

[0243] In some embodiments, the fourth device can receive the third information and / or the fourth information.

[0244] In some embodiments, the second device can send the third information and / or the fourth information to the fourth device.

[0245] Step 4104, receiving the second information.

[0246] The optional implementation of step 4104 can refer to the optional implementation of step 2106 of FIG. 2 and other associated parts in the embodiments involved in the steps of FIG. 2.

[0247] In some embodiments, the second device receives the second information sent by the fourth device, but is not limited thereto, and can also receive the second information sent by other subjects.

[0248] In some embodiments, the second device obtains the second information specified by the protocol.

[0249] In some embodiments, the second device processes to obtain the second information.

[0250] Step 4105, determining the second information.

[0251] The optional implementation of step 4105 can refer to the optional implementation of step 2107 of FIG. 2 and other associated parts in the embodiments involved in the steps of FIG. 2.

[0252] Step 4106, sending the second information.

[0253] The optional implementation of step 4106 can refer to the optional implementation of step 2108 of FIG. 2, the optional implementation of step 3103 of FIG. 3a, and other associated parts in the embodiments involved in the steps of FIG. 2 and FIG. 3a.

[0254] In some embodiments, the first device can receive the second information.

[0255] In some embodiments, the second device can send the second information to the first device, but is not limited thereto, and the second device can also send the second information to other subjects.

[0256] FIG. 4b is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 4b, the embodiment of the present disclosure relates to a communication method, for the second device 102, and the above method comprises:

[0257] Step 4201, receiving third information.

[0258] The optional implementation of step 4201 can be referred to the optional implementation of step 2101 in FIG. 2, step 4101 in FIG. 4a, and other associated parts in the embodiments related to the steps in FIG. 2 and FIG. 4a.

[0259] Step 4202, receiving fourth information.

[0260] The optional implementation of step 4202 can be referred to the optional implementation of step 2103 in FIG. 2, step 4102 in FIG. 4a, and other associated parts in the embodiments related to the steps in FIG. 2 and FIG. 4a.

[0261] Step 4203, determining the second information.

[0262] The optional implementation of step 4203 can be referred to the optional implementation of step 2107 in FIG. 2, step 4105 in FIG. 4a, and other associated parts in the embodiments related to the steps in FIG. 2 and FIG. 4a.

[0263] Step 4204, sending the second information.

[0264] The optional implementation of step 4204 can be referred to the optional implementation of step 2108 in FIG. 2, step 3103 in FIG. 3a, step 4106 in FIG. 4a, and other associated parts in the embodiments related to the steps in FIG. 2, FIG. 3a, and FIG. 4a.

[0265] FIG. 4c is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 4c, the embodiment of the present disclosure relates to a communication method, for the second device 102, and the above method comprises:

[0266] Step 4301, sending the second information.

[0267] The optional implementation of step 4301 can be referred to the optional implementation of step 2108 in FIG. 2, step 3103 in FIG. 3a, step 4106 in FIG. 4a, step 4204 in FIG. 4b, and other associated parts in the embodiments related to the steps in FIG. 2, FIG. 3a, FIG. 4a, and FIG. 4b.

[0268] FIG. 5 is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 5, the embodiment of the present disclosure relates to a communication method for a communication system, which includes the first device 101 and the second device 102. The communication system can also include the third device and / or the fourth device. The method includes the following steps:

[0269] In step 5101, the second device sends the second information to the first device.

[0270] The optional implementation of step 5101 can refer to the optional implementation of step 2108 in FIG. 2, step 3103 in FIG. 3a, step 4106 in FIG. 4a, step 4204 in FIG. 4b, step 4301 in FIG. 4c, and other related parts in the embodiments related to the steps in FIG. 2, FIG. 3a, FIG. 4a, FIG. 4b, and FIG. 4c.

[0271] In step 5102, the first device determines the network accessed by the first device using the second identifier.

[0272] The optional implementation of step 5102 can refer to the optional implementation of step 2109 in FIG. 2, step 3104 in FIG. 3a, step 3201 in FIG. 3b, and other related parts in the embodiments related to the steps in FIG. 2, FIG. 3a, and FIG. 3b.

[0273] The method according to the embodiments of the present disclosure relates to a network selection method in a dual connectivity scenario.

[0274] Option 1: The dual 3GPP access device saves the network selection information, which can be part of the subscription information of the dual 3GPP access device, preconfigured in the dual 3GPP access device, or the network selection information sent by the network to the dual 3GPP access device in the last registration process of the dual 3GPP access device.

[0275] The network selection information can include the combination of the access network and the PLMN, and configure the corresponding priority, for example:

[0276] In the above table, PLMN1 is the home PLMN or the subscription PLMN, and the smaller the priority value in the above table is, the higher the priority is.

[0277] The dual 3GPP access device initiates registration using SUPI#1, performs network selection according to the saved network selection information, and follows the following principles:

[0278] 1. Preferentially select the network PLMN of the subscription of the dual 3GPP access device, i.e., the HPLMN.

[0279] 2. If the HPLMN / VPLMN has been selected and completed registration by another SUPI (SUPI#1) of the dual 3GPP access device, then prefer to select the RAN / HPLMN different from the one used by SUPI#1, for example: SUPI#1 has selected TN-NR / PLMN1, then SUPI#2 selects NTN-NR / PLMN1.

[0280] 3. If no HPLMN is available, then select the access type / PLMN ID according to the priority order.

[0281] 4. If the access type / PLMN ID that has been selected has been selected and completed registration by SUPI#2, then prefer to select the entry corresponding to a different access type under the same PLMN ID as the network access. For example, SUPI#2 has selected TN-NR / PLMN2, then SUPI#1 selects LTE / PLMN2 as the access.

[0282] After the dual 3GPP access device completes registration using SUPI, it needs to mark the network selection information entry that has been selected for use.

[0283] Solution two:

[0284] The home network device (such as PCF, UDM, SMF) of the dual 3GPP access device determines the network selection information available for access and sends it to the dual 3GPP access device.

[0285] When the dual 3GPP access device uses SUPI#1 to perform the first registration, the home network device determines the network selection information available for the second registration and sends it to the dual 3GPP access device through the registration acceptance message of the first registration. The second registration is initiated by the dual 3GPP access device using SUPI#2.

[0286] The dual 3GPP access device searches for available network access using SUPI#2 and reports it to the home network device through the process of SUPI#1 (such as through the registration update process of SUPI#1), and the home network device determines the network information available for SUPI#2 access.

[0287] The home network device determines the network selection information available for access according to at least one of the following information:

[0288] The network selection information of the dual 3GPP access device subscription;

[0289] The available network access information reported by the dual 3GPP access device.

[0290] The above-described example method is explained below by way of specific examples.

[0291] Example One:

[0292] As shown in Figure 6, the procedure assumes the following aspects:

[0293] The dual 3GPP access device has two terminals, each with a SUPI. The two terminals are associated through the dual 3GPP access layer.

[0294] RAN1 / PLMN1 and RAN2 / PLMN2 are the VPLMNs of the dual 3GPP access device.

[0295] The Authentication Server Function (AUSF), PCF, and UDM are NFs controlled by the HPLMN of the device.

[0296] 601-606: Terminal 1 of the dual 3GPP access device registers to the network using SUPI#1, the network selection can be based on existing network selection mechanisms, RAN1 / PLMN1 is selected as the VPLMN of terminal 1, and terminal 1 completes the registration procedure as specified in the relevant protocols on RAN1 / PLMN1.

[0297] Optionally, as part of the procedure, the network can provide the dual 3GPP access device with network selection information that can be used in the next terminal registration.

[0298] Specifically, step 601 is a request by terminal 1 to register to the network in the roaming area using SUPI#1; step 602 is a security authentication between devices; step 603 is the use of Nudm_UECM_Registration signaling by the roaming network to register to the local network using SUPI#1, and to obtain the registration result; step 604 is the use of Nudm_SDM_Get by AMF1 to retrieve the dual 3GPP access device configuration file from the UDM, including the subscribed RAT / PLMN; step 605 is the association of the roaming network with the local network through the Access and Mobility Management (AM) policy; and step 606 is the acceptance by the roaming network of the registration request of the dual 3GPP access device.

[0299] 607: Terminal 2 of the dual 3GPP access device registers to the network using SUPI#2, which can be determined based on the UE Route Selection Policy (URSP) provided to the dual 3GPP access device in the first registration process to determine how to trigger the dual 3GPP access device to start the second registration.

[0300] Before registration, terminal 2 should select an available access network for registration. Terminal 2 of the dual 3GPP access device considers the preconfigured network selection information at the dual 3GPP access device and the information provided by the network (the network can provide the information at step 606) to select a suitable access network.

[0301] The structure of the network selection information can refer to the information mentioned in Scheme One, the selection process can follow the principles mentioned in Scheme One, and RAN2 / PLMN2 can be selected for serving terminal 2.

[0302] 608-610: Terminal 2 completes the registration process on RAN2 / PLMN2 as specified in the relevant protocol.

[0303] Specifically, step 608 is a request by terminal 2 of the dual 3GPP access device to register to the network in the roaming place using SUPI#2; step 609 is an interaction between the network in the roaming place and the home network to complete other steps of registration; and step 610 is an acceptance by the network in the roaming place of the registration request of the dual 3GPP access device.

[0304] Example Two:

[0305] As shown in FIG. 7, the process assumes the following aspects:

[0306] The dual 3GPP access device has two terminals, each of which has a SUPI. The two terminals are associated through the dual 3GPP access layer.

[0307] RAN2 / PLMN1 is the VPLMN serving the dual 3GPP access device, and AMF2 belongs to PLMN1.

[0308] AMF1, AUSF, PCF, and UDM are NFs of the HOLMN of the dual 3GPP access device.

[0309] 701: Terminal 1 of the dual 3GPP access device registers to the network using SUPI#1, and the network selection can be based on existing network selection mechanisms. RAN1 / PLMN1 is selected as the VPLMN of terminal 1, and terminal 1 sends a registration request to the network.

[0310] Optionally, the network device can be reported about the available RAT / PLMN that can be accessed at the current location.

[0311] 702-703: Terminal 1 and the network complete the authentication and service AMF (AMF1) registration process as specified in the relevant protocol.

[0312] Specifically, step 702 is the security authentication between devices; step 703 is that the network in the roaming area registers to the local network by using SUPI#1 using Nudm_UECM_Registration signaling, and obtains the registration result.

[0313] 704: AMF1 retrieves the dual 3GPP access device configuration file from UDM using Nudm_SDM_Get, including the subscribed RAT / PLMN.

[0314] 705a: AMF1 performs AM policy association establishment with PCF. The available RAT / PLMN (which can be reported in step 701) and the subscribed RAT / plmn are sent to PCF.

[0315] 705b: PCF can determine the network selection policy according to the information received from AMF1, and provide it to AMF1. The network selection policy indicates the RAT / PLMN that can be accessed by the dual 3GPP access device.

[0316] 706: The network selection policy is contained in the registration acceptance message and sent to the dual 3GPP access device.

[0317] 707: The terminal 2 of the dual 3GPP access device registers to the network using SUPI#2. Based on the URSP rule provided to the dual 3GPP access device in the first registration process, it can be determined how to trigger the dual 3GPP access device to initiate the second registration.

[0318] Before registration, the terminal 2 should select the available access network for registration. The terminal 2 of the dual 3GPP access device can select the appropriate access network according to the network selection policy received from the first registration process.

[0319] The structure of the network selection information can refer to the information mentioned in Scheme One.

[0320] The selection process can follow the principles mentioned in Scheme One. RAN2 / PLMN2 is selected for serving terminal 2.

[0321] 708-710: The terminal 2 completes the registration process on RAN2 / PLMN2 as specified in the relevant protocol.

[0322] Specifically, step 708 is that the terminal 2 of the dual 3GPP access device requests to register to the network in the roaming area using SUPI#2; step 709 is that the network in the roaming area interacts with the local network to complete the other steps of registration; and step 710 is that the network in the roaming area accepts the registration request of the dual 3GPP access device.

[0323] In conclusion, the above examples of the present disclosure can determine how the dual-3GPP access device decides to register to the second 3GPP access network and how the terminal selects the 3GPP access network after the dual-3GPP access device completes registration through one 3GPP access using one of the two SUPIs.

[0324] FIG. 8a is a structural schematic diagram of the first device 101 according to an embodiment of the present disclosure. As shown in FIG. 8a, the first device 101 includes a processing module 8101 configured to determine a network accessed by the first device using a second identity after the first device registers to a first network using a first identity. Optionally, the processing module is configured to perform at least one of the processing steps (e.g., steps 2101, 2109, 2110, 2111, etc., but not limited thereto) performed by the first device 101 in any of the above methods, which will not be repeated here.

[0325] In some embodiments, the processing module 8101 can be further configured to determine the first information.

[0326] In some embodiments, the processing module 8101 can be further configured to register to the network using the second identity.

[0327] In some embodiments, the processing module 8101 can be further configured to save network information used by the first device after registration is completed.

[0328] In some embodiments, the first device further includes a transceiver module configured to send third information.

[0329] In some embodiments, the transceiver module can be further configured to receive the second information.

[0330] FIG. 8b is a structural schematic diagram of the second device 102 according to an embodiment of the present disclosure. As shown in FIG. 8b, the second device 102 includes a transceiver module 8201 configured to send second information to the first device, the second information being used to assist the first device in determining first information, the first device including a first communication component having a first identity and a second communication component having a second identity, the first information being used by the first device to determine a network accessed by the first device using the second identity after the first device registers to a first network using the first identity. Optionally, the transceiver module is configured to perform at least one of the transceiving steps (e.g., steps 2102, 2103, 2104, 2106, 2108, etc., but not limited thereto) performed by the second device 102 in any of the above methods, which will not be repeated here.

[0331] In some embodiments, the transceiver module 8201 can be further configured to receive third information.

[0332] In some embodiments, the transceiver module 8201 can be further configured to receive fourth information.

[0333] In some embodiments, the transceiver module 8201 can also be configured to transmit the third information and / or the fourth information.

[0334] In some embodiments, the transceiver module 8201 can also be configured to receive the second information.

[0335] In some embodiments, the second device further includes a processing module configured to determine the second information.

[0336] As shown in FIG. 9a, the communication device 9100 includes one or more processors 9101. The processor 9101 can be a general processor or a special-purpose processor, etc., such as a baseband processor or a central processor. The baseband processor can be configured to process communication protocols and communication data, and the central processor can be configured to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. The processor 9101 is configured to invoke instructions to cause the communication device 9100 to perform any of the above methods.

[0337] In some embodiments, the communication device 9100 further includes one or more memories 9102 configured to store instructions. Alternatively, all or part of the memory 9102 can also be outside the communication device 9100.

[0338] 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 communication steps in the above methods, such as transmitting and receiving, are performed by the transceiver 9103, and the other steps are performed by the processor 9101.

[0339] In some embodiments, the transceiver can include a receiver and a transmitter, which can be separate or integrated together. Alternatively, the terms transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be mutually replaced, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be mutually replaced, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be mutually replaced.

[0340] Alternatively, the communication device 9100 further includes one or more interface circuits 9104 connected with the memory 9102. The interface circuit 9104 can be configured to receive signals from the memory 9102 or other devices, and can be configured to send signals to the memory 9102 or other devices. For example, the interface circuit 9104 can read instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0341] 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 FIG. 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, which can optionally 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, and the like; (6) others, and the like.

[0342] FIG. 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 can be a chip or a chip system, the structural schematic diagram of the chip 9200 shown in FIG. 9b can be referred to, but is not limited thereto.

[0343] The chip 9200 includes one or more processors 9201 for invoking instructions to cause the chip 9200 to perform any of the above methods.

[0344] In some embodiments, the chip 9200 further includes one or more interface circuits 9202 connected with the memory 9203, which can be used to receive signals from the memory 9203 or other devices, and can be used 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. Alternatively, the terms interface circuit, interface, transceiver pin, transceiver, and the like can be replaced with each other.

[0345] In some embodiments, the chip 9200 further includes one or more memories 9203 for storing instructions. Alternatively, all or part of the memory 9203 can be outside the chip 9200.

[0346] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 9100, causes the communication device 9100 to perform any of the above methods. Alternatively, the storage medium is an electronic storage medium. Alternatively, the storage medium is a computer-readable storage medium, but is not limited thereto, and can also be a storage medium readable by other devices. Alternatively, the storage medium can be a non-transitory storage medium, but is not limited thereto, and can also be a transitory storage medium.

[0347] The disclosure also provides a program product which, when executed by the communication device 9100, causes the communication device 9100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0348] The disclosure also provides a computer program which, when executed on a computer, causes the computer to perform any of the above methods.

[0349] In the above embodiments, all or some of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or some of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer programs are loaded on a computer and executed, all or some of the processes or functions according to the embodiments of the disclosure are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer programs can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer programs can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (for example, floppy disk, hard disk, magnetic tape), an optical medium (for example, high-density digital video disc (DVD)), or a semiconductor medium (for example, solid state disk (SSD)), etc.

[0350] The correspondence relationship shown in each table in the present disclosure can be configured or predefined. The values of the information in each table are merely examples, and other values can be configured, and the present disclosure does not limit. When configuring the correspondence relationship between the information and each parameter, it is not necessarily required to configure all the correspondence relationships shown in each table. For example, the correspondence relationship shown in some rows in the table in the present disclosure can also not be configured. For another example, the above tables can be appropriately deformed, for example, split, merged, and the like. The names of the parameters shown in the titles of the above tables can also use other names understandable by the communication device, and the values or representations of the parameters can also use other values or representations understandable by the communication device. The above tables can also use other data structures when implemented, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or the like.

[0351] The predefinition in the present disclosure can be understood as defining, predefining, storing, pre-storing, pre-negotiating, pre-configuring, solidifying, or pre-burning.

[0352] Those skilled in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present disclosure.

[0353] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0354] The above is merely a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method is performed by a first device, the first device comprising a first communication component with a first identity and a second communication component with a second identity, the method comprising: after the first device registers to a first network using the first identity, determining a network accessed by the first device using the second identity.

2. The method of claim 1, wherein, The determining the network accessed by the first device using the second identity comprises: determining the network accessed by the first device using the second identity based on first information and / or second information, wherein the first information and / or the second information is used to indicate a correspondence between the first identity and / or the second identity and network information.

3. The method of claim 2, wherein, The network information comprises at least one of: an access network type; an identity of a public land mobile network (PLMN); a network access priority.

4. The method of any one of claims 2-3, wherein, The method further comprises: determining the first information, the first information being information preconfigured in the first device.

5. The method according to any one of claims 2 to 4, characterized in that, The method further comprises: receiving the second information sent by a second device.

6. The method of claim 5, wherein, The second information comprises at least one of: registration information of the first device registering to the first network using the first identity; registration information of the first device at a last registration; wherein the registration information is used to indicate network information registered by the first identity and / or the second identity.

7. The method of claim 5, wherein, The second information comprises at least one of: network information determined by the second device and available for the first device to access using the second identity; network information received by the second device from a fourth device and available for the first device to access using the second identity.

8. The method of claim 7, wherein, The method further comprises: sending third information to the second device, the third information being used to identify network information available to the first device at a current location; wherein the second information is determined according to the third information.

9. The method according to any one of claims 2 to 8, characterized in that, The determining the network accessed by the first device using the second identity based on first information and / or second information comprises: determining the network accessed by the first device using the second identity based on first information and / or second information according to a first rule.

10. The method of claim 9, wherein, The first rule comprises at least one of: preferentially selecting a home public land mobile network (HPLMN) to which the first device is subscribed as the network accessed by the first device using the second identity; in a first condition, preferentially selecting an access network type and / or a HPLMN different from the first network as the network accessed by the first device using the second identity, the first condition being that the first device has registered to a subscribed HPLMN using the first identity; in a second condition, determining the network accessed by the first device using the second identity according to a network priority as the network accessed by the first device using the second identity, the second condition being that no HPLMN is currently available for selection; In a third condition, a network having a second PLMN and a second access type is preferentially selected as the network accessed by the first device using the second identity, the second PLMN is the same as the first PLMN and the second access type is different from the first access type, and the third condition is that the first network has the first access type and the first PLMN.

11. The method according to any one of claims 1 to 10, characterized in that, The method further comprises: registering to the network using the second identity; after the registration is completed, saving the network information used by the first device.

12. A communication method, comprising: The method is performed by a second device, and the method comprises: sending second information to a first device, the second information being used to assist the first device in determining first information, the first device comprising a first communication component having a first identity and a second communication component having a second identity, and the first information being used by the first device to determine a network accessed by the first device using the second identity after the first device registers to a first network using the first identity. The first information and / or the second information is / are used to indicate a correspondence between the first identity and / or the second identity and network information.

13. The method of claim 12, wherein, The network information comprises at least one of:

14. The method of claim 13, wherein, an access network type; an identity of a public land mobile network (PLMN); a network access priority. The second information comprises at least one of:

15. The method according to any one of claims 12 to 14, characterized in that, registration information of the first device registering to the first network using the first identity; registration information of the first device at a last registration; wherein the registration information is used to indicate network information registered by the first identity and / or the second identity. The second information comprises at least one of:

16. The method according to any one of claims 12 to 14, characterized in that, network information determined by the second device and available for the first device to access using the second identity; network information received by the second device from a fourth device and available for the first device to access using the second identity. The method further comprises:

17. The method of claim 16, wherein, receiving third information sent by the first device, the third information being used to identify network information available to the first device at a current location; obtaining fourth information from a third device, the fourth information being used to indicate network information accessible to the first device; wherein the second information is determined by the second device or the fourth device based on the third information and / or the fourth information. The method further comprises:

18. The method of claim 17, wherein, determining the second information based on the third information and / or the fourth information. The method further comprises:

19. The method of claim 17, wherein, sending the third information and / or the fourth information to a fourth device; receiving the second information sent by the fourth device, the second information being determined by the fourth device based on the third information and / or the fourth information. comprises:

20. A first device, comprising: a processing module configured to determine, after the first device registers to a first network using a first identity, a network accessed by the first device using a second identity. comprises:

21. A second device, comprising: ​ The transceiver module is configured to send second information to the first device, the second information being used to assist the first device in determining the first information, the first device comprising a first communication component with a first identity and a second communication component with a second identity, the first information being used to determine a network accessed by the first device using the second identity after the first device is registered to a first network using the first identity.

22. A communication system, characterized by The first device is configured to perform the method of any one of claims 1-19, and the second device is configured to perform the method of any one of claims 11-15.

23. The communication system of claim 22, wherein, The third device is further configured to provide fourth information to the second device, the fourth information being used to indicate network information that the first device is able to access; and the fourth device is further configured to determine the second information according to the third information provided by the second device and the fourth information. The third device is further configured to provide fourth information to the second device, the fourth information being used to indicate network information that the first device is able to access; and the fourth device is further configured to determine the second information according to the third information provided by the second device and the fourth information.

24. A communication device, wherein, The transceiver module is configured to send second information to the first device, the second information being used to assist the first device in determining the first information, the first device comprising a first communication component with a first identity and a second communication component with a second identity, the first information being used to determine a network accessed by the first device using the second identity after the first device is registered to a first network using the first identity. The transceiver module is configured to send second information to the first device, the second information being used to assist the first device in determining the first information, the first device comprising a first communication component with a first identity and a second communication component with a second identity, the first information being used to determine a network accessed by the first device using the second identity after the first device is registered to a first network using the first identity. The computer storage medium stores computer executable instructions; the computer executable instructions are executed by the processor, and the computer executable instructions can implement the method of any one of claims 1-19. ​ 25. A computer storage medium, wherein, ​

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