Information processing method and apparatus, device, and storage medium

Abstract

The present disclosure relates to the technical field of wireless communications, and provides an information processing method and apparatus, a device, and a storage medium. The method comprises: a first subscriber unit receives call information sent by a first network element in a core network, the call information instructing a second subscriber unit to respond to the call information; and the first subscriber unit sends notification information to the second subscriber unit, the notification information instructing the second subscriber unit to respond to the call information, wherein the first subscriber unit and the second subscriber unit simultaneously access one or more core networks by means of a first access network and a second access network, respectively, and the first subscriber unit and the second subscriber unit have an association relationship and are located in a terminal device supporting multiple subscriber units. The reachability rate of a message sent to subscriber units is improved.

Description

Information processing method, device, equipment and storage medium

[0001] This disclosure claims priority to Chinese patent application number 202410178570.3, filed with the China Patent Office on February 9, 2024, entitled “Information Processing Method, Device, Equipment and Storage Medium,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of wireless communication technology, and more specifically, to an information processing method, apparatus, device, and storage medium. Background Art

[0003] In the 5th Generation Mobile Networks (5G) system, terminal devices can access the 5G core network through the 3rd Generation Partnership Project (3GPP) access network and non-3GPP access network, and establish a multi-access (MA) protocol data unit (PDU) session and two N3 links to simultaneously transmit user plane data.

[0004] Some mobile communication devices support Multi-USIM (Multi-USIM). In these devices, different USIMs can be registered with the same user equipment (UE) in the 5G core network. For example, one of the different USIMs can interact with the 5G core network at the same time.

[0005] Terminal devices can interact with the network to receive or send messages. Currently, the reach of messages sent to user terminals still needs to be improved. Summary of the Invention

[0006] The present disclosure provides an information processing method, apparatus, device and storage medium for improving the call reach rate to user terminals.

[0007] In a first aspect, an embodiment of the present disclosure provides an information processing method, including: a first user unit receives call information sent by a first network element in a core network, and the call information instructs a second user unit to respond to the call information; the first user unit sends notification information to the second user unit, and the notification information is used to notify the second user unit to respond to the call information; wherein, the first user unit and the second user unit simultaneously access one or more core networks through a first access network and a second access network respectively, and the first user unit and the second user unit have an associated relationship and are located in a terminal device that supports multiple user units.

[0008] In some embodiments, the method further includes: the second user unit responding to the call information according to the notification information.

[0009] In some embodiments, the second access network is a non-3GPP network, and the second subscriber unit responds to the call information via the second access network.

[0010] In some embodiments, the second access network comprises a 3GPP network, and the second user unit responds to the call information via the second access network; or

[0011] The second subscriber unit switches to the first access network in response to the call information.

[0012] In a second aspect, an embodiment of the present disclosure provides an information processing method, which is applied to a first network element of a core network, comprising: receiving information of downlink service data sent to a second user unit, and determining a first user unit having an association relationship with the second user unit; wherein the first user unit and the second user unit access the core network via a first access network and a second access network respectively; there is an association relationship between the first user unit and the second user unit, and the first user unit and the second user unit are located in the same terminal device; based on the signaling connection information between the first user unit and the second user unit and the core network respectively, determining the first user unit as a call object; sending the call information to the first user unit, and the call information instructs the second user unit to respond to the call.

[0013] In some embodiments, determining the first user unit as the call object based on the signaling connection information between the first user unit and the second user unit and the core network includes: determining the first user unit as the call object based on the first parameter of the first signaling connection between the first user unit and the core network, and the second parameter of the second signaling connection between the second user unit and the core network.

[0014] In some embodiments, the first parameter includes one or more of the following: the connection status of the first user unit, the first access network load, the first access network link quality, the first user unit capability, the location information of the first user unit and the service quality of the first signaling connection; the second parameter includes one or more of the following: the connection status of the second user unit, the second access network load, the second access network link quality, the second user unit capability, the location information of the second user unit and the service quality of the second signaling connection.

[0015] In some embodiments, the method further includes: sending information about the association relationship between the first user unit and the second user unit, and preset parameters corresponding to each of the first user unit and the second user unit to the second network element based on an acquisition request of the second network element, wherein the second network element switches the PDU session of the second user unit to the first user unit based on the preset parameters and contract information corresponding to each of the first user unit and the second user unit.

[0016] In some embodiments, the method further includes: obtaining a first preset association identifier of the first user unit and a second preset association identifier of the second user unit; the first preset association identifier and the second preset association identifier are used to indicate that a first global user identity module corresponding to the first user unit is associated with a second global user identity module corresponding to the second user unit; sending information of the first user unit, information of the second user unit, the first preset association identifier, and the second preset association identifier to a third network element, and the third network element establishing an association relationship between the first user unit and the second user unit based on the first preset association identifier and the second preset association identifier; and receiving and storing the association relationship between the first user unit and the second user unit sent by the third network element.

[0017] In some embodiments, obtaining the first preset association identifier of the first user unit and the second preset association identifier of the second user unit includes: obtaining the first preset association identifier from the first registration information sent by the first user unit and obtaining the second preset association identifier from the second registration information sent by the second user unit; or obtaining the first preset association identifier from the first user unit and the second preset association identifier from the second user unit based on the dual-boot function information in the first registration information sent by the first user unit and the second registration information sent by the second user unit; or obtaining the first preset association identifier and the second preset association identifier from the contract data of the first user unit and the second user unit.

[0018] In a third aspect, an embodiment of the present disclosure provides an information processing method, the method comprising: receiving information that downlink service data is sent to a second user unit, obtaining a first user unit having an association relationship with the second user unit from a first network element, wherein the first user unit and the second user unit simultaneously access the core network via a first access network and a second access network respectively, and the first user unit and the second user unit have an association relationship; determining that the first user unit is a response object based on a third preset parameter corresponding to the first user unit, a fourth preset parameter corresponding to the second user unit, and contract data, and switching the PDU session of the second user unit to the first user unit.

[0019] In some embodiments, the third parameter includes one or more of the following: the connection status of the first user unit, the load status of the first access network, and the contract information; the fourth parameter includes one or more of the following: the connection status of the first user unit, the load status of the second access network, and the contract information.

[0020] In a fourth aspect, an embodiment of the present disclosure provides a terminal device, comprising a first user unit and a second user unit, wherein the first user unit receives call information sent by a first network element in a core network, and the call information instructs the second user unit to respond to the call information; the first user unit sends notification information to the second user unit, and the notification information is used to notify the second user unit to respond to the call information; wherein the first user unit and the second user unit simultaneously access one or more core networks through a first access network and a second access network respectively, and the first user unit and the second user unit have an associated relationship and are located in a terminal device that supports multiple user units.

[0021] In some embodiments, the second user unit responds to the call information based on the notification information.

[0022] In some embodiments, the second access network is a non-3GPP network, and the second subscriber unit responds to the call information via the second access network.

[0023] In some embodiments, the second access network comprises a 3GPP network, and the second user unit responds to the call information via the second access network; or

[0024] The second subscriber unit switches to the first access network in response to the call information.

[0025] In a fifth aspect, an embodiment of the present disclosure provides an information processing device, comprising: a first receiving module, used to receive information that downlink service data is sent to a second user unit, and determine a first user unit that has an association relationship with the second user unit; wherein, the first user unit and the second user unit access the core network via a first access network and a second access network respectively; there is an association relationship between the first user unit and the second user unit, and the first user unit and the second user unit are located in the same terminal device; a call object determination module, used to determine the first user unit as a call object based on the signaling connection information between the first user unit and the second user unit and the core network respectively; a first sending module, used to send the call information to the first user unit, and the call information instructs the second user unit to respond to the call.

[0026] In the sixth aspect, an embodiment of the present disclosure provides an information processing device, including: a second receiving module, used to receive information of downlink service data sent to a second user unit, and obtain a first user unit having an association relationship with the second user unit from a first network element, wherein the first user unit and the second user unit simultaneously access the core network with a first access network and a second access network respectively, and the first user unit and the second user unit have an association relationship; a first switching module, used to determine that the first user unit is a response object based on a third preset parameter corresponding to the first user unit, a fourth preset parameter corresponding to the second user unit and contract data, and switch the PDU session of the second user unit to the first user unit.

[0027] In the seventh aspect, an embodiment of the present disclosure provides an information processing device, including a memory, a transceiver, and a processor: the memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: receive downlink service data and send information to the second user unit, and determine a first user unit that has an association relationship with the second user unit; wherein, the first user unit and the second user unit access the core network through the first access network and the second access network respectively; there is an association relationship between the first user unit and the second user unit, and the first user unit and the second user unit are located in the same terminal device; based on the signaling connection information between the first user unit and the second user unit and the core network respectively, the first user unit is determined as the call object; the call information is sent to the first user unit, and the call information instructs the second user unit to respond to the call.

[0028] In some embodiments, determining the first user unit as a call target based on signaling connection information between the first user unit and the second user unit and the core network includes:

[0029] The first user unit is determined as a call target according to a first parameter of a first signaling connection between the first user unit and the core network and a second parameter of a second signaling connection between the second user unit and the core network.

[0030] In some embodiments, the first parameter includes one or more of the following:

[0031] the connection status of the first user unit, the first access network load, the first access network link quality, the first user unit capability, the location information of the first user unit, and the quality of service of the first signaling connection;

[0032] The second parameter includes one or more of the following:

[0033] The connection status of the second user unit, the load of the second access network, the link quality of the second access network, the capability of the second user unit, the location information of the second user unit and the quality of service of the second signaling connection.

[0034] In some embodiments, the processor is further configured to:

[0035] According to the acquisition request of the second network element, the association relationship between the first user unit and the second user unit, and the information of the preset parameters corresponding to the first user unit and the second user unit are sent to the second network element, wherein the second network element switches the PDU session of the second user unit to the first user unit according to the preset parameters and contract information corresponding to the first user unit and the second user.

[0036] In some embodiments, the processor is further configured to:

[0037] Obtaining a first preset association identifier of the first user unit and a second preset association identifier of the second user unit; the first preset association identifier and the second preset association identifier are used to indicate that a first global subscriber identity module corresponding to the first user unit is associated with a second global subscriber identity module corresponding to the second user unit;

[0038] Sending information about the first user unit, information about the second user unit, the first preset association identifier, and the second preset association identifier to a third network element, whereby the third network element establishes an association relationship between the first user unit and the second user unit based on the first preset association identifier and the second preset association identifier;

[0039] Receive and store the association relationship between the first user unit and the second user unit sent by the third network element.

[0040] In some embodiments, obtaining the first preset association identifier of the first user unit and the second preset association identifier of the second user unit includes:

[0041] Acquire a first preset association identifier from the first registration information sent by the first user unit, and acquire a second preset association identifier from the second registration information sent by the second user unit; or,

[0042] acquiring a first preset association identifier from the first user unit and a second preset association identifier from the second user unit based on the dual-boot function information in the first registration information sent by the first user unit and the second registration information sent by the second user unit; or

[0043] The first preset association identifier and the second preset association identifier are obtained from subscription data of the first user unit and the second user unit.

[0044] In an eighth aspect, an embodiment of the present disclosure provides an information processing device, comprising a memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0045] receiving information that downlink service data is sent to a second user unit, and obtaining, from a first network element, a first user unit associated with the second user unit, wherein the first user unit and the second user unit simultaneously access a core network through a first access network and a second access network, respectively, and the first user unit and the second user unit have an associated relationship;

[0046] According to the third preset parameter corresponding to the first user unit, the fourth preset parameter corresponding to the second user unit and the contract data, the first user unit is determined to be the response object, and the PDU session of the second user unit is switched to the first user unit.

[0047] In some embodiments, the third parameter includes one or more of the following:

[0048] The connection status of the first user unit, the load status of the first access network, and the subscription information of the first user unit;

[0049] The fourth parameter includes one or more of the following:

[0050] The connection status of the first user unit, the load status of the second access network, and the subscription information of the second user unit.

[0051] It should be understood that the contents described in the above summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easier to understand through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] FIG1 is a schematic diagram of an application scenario provided by an embodiment of the present disclosure;

[0053] FIG2 is a flow chart of the information processing method provided by the present disclosure;

[0054] FIG3 is a schematic flow chart of the information processing method provided by the present disclosure;

[0055] FIG4 is a schematic diagram of an interaction for establishing an association relationship between a first user unit and a second user unit provided by the present disclosure;

[0056] FIG5 is an interactive schematic diagram of the information processing method provided by the present disclosure;

[0057] FIG6 is an interactive schematic diagram of the information processing method provided by the present disclosure;

[0058] FIG7 is a schematic flow chart of the information processing method provided by the present disclosure;

[0059] FIG8 is an interactive schematic diagram of the information processing method provided by the present disclosure;

[0060] FIG9 is a schematic structural diagram of a terminal device provided by the present disclosure;

[0061] FIG10 is a schematic structural diagram of an information processing device provided by the present disclosure;

[0062] FIG11 is a schematic structural diagram of an information processing device provided by the present disclosure;

[0063] FIG12 is a schematic structural diagram of an information processing device provided by the present disclosure;

[0064] FIG13 is a schematic structural diagram of the information processing device provided by the present disclosure. DETAILED DESCRIPTION

[0065] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0066] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0067] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0068] Please refer to Figure 1, which is a schematic diagram of an application scenario provided by an embodiment of the present disclosure. As shown in Figure 1, a terminal device 101 that supports multiple Universal Subscriber Identity Modules (USIMs) can access a 5G core network 104 via a first access network (e.g., a 3GPP network and / or a non-3GPP network) 102 and a second access network (a non-3GPP network and / or a 3GPP network) 103. Terminal device 101, for example, supports two USIMs (USIM1 and USIM2).

[0069] The terminal device 101 in FIG1 is merely a schematic illustration, and the terminal device may be a smart phone, a laptop computer, a personal digital assistant, a wearable device, an electric meter, an Internet of Things terminal, a drone, etc.

[0070] The first access network 102 and the second access network 103 may be 3GPP networks, for example, including: Public Land Mobile Network (PLMN), Public Network Interface-Public Land Mobile Network (PNI-PLMN). The access type may be 5G New Radio (NR) access, terrestrial access, satellite (including different satellite types, low-orbit satellites, medium-orbit satellites, high-orbit satellites) access, 4G LTE access, etc. The access type of the first access network and the second access network may be the same or different.

[0071] The 5G core network 104 may include multiple network elements, such as Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), and Unified Data Management (UDM). The AMF may communicate with the UDM.

[0072] AMF is responsible for user unit registration, mobility management and entire business process monitoring throughout the entire life cycle.

[0073] The SMF is responsible for establishing the connection between the User Equipment (UE) and the data network and managing the user plane of the connection. The SMF is the control function for managing user sessions, including session establishment, modification, and release. The SMF can allocate IP addresses for Internet Protocol (IP) type PDUs. The SMF communicates indirectly with the UE through the AMF, which is responsible for transmitting session-related messages between the UE and the SMF.

[0074] UDM is used for: generation of 3GPP authentication and key agreement (AKA) authentication credentials; user identity processing (for example, storage and management of the subscription permanent identifier (SUPI) of each user in the 5G system); support for unhiding the privacy-protected user subscription concealed identifier (SUCI); access authentication based on subscription data (for example, roaming restrictions); NF registration management of UE services (for example, AMF for UE storage services and SMF for UE PDU session storage services); subscription management, etc.

[0075] Under the control of the SMF, the UPF processes and forwards user data. The UPF is interconnected with external IP networks and serves as the anchor point for the UE to the external network.

[0076] In the above scenario, different USIMs of the terminal device are registered with the same UE on different access networks. In some application scenarios, each USIM is associated with a specific operator network. The UE may overlap when monitoring cyclic messages from different operator networks. During this overlap, messages from the operator networks may not be delivered, resulting in a low message reach rate.

[0077] The embodiments of the present disclosure provide an information processing method and apparatus to solve the problem of low message reach rate of terminal devices supporting multiple USIMs.

[0078] Among them, the method and the device are based on the same application concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0079] In different systems, the names of terminals may also vary. For example, in a 5G system, the above-mentioned terminals may also be wireless terminals, wherein wireless terminals can communicate with one or more core networks (CNs) via a radio access network (RAN). Wireless terminals can be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals. For example, they can be portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile devices that exchange voice and / or data with a radio access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and other devices. A wireless terminal may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, or a user device, and is not limited in the embodiments of the present disclosure. The technical solutions provided in the embodiments of the present disclosure may be applicable to a variety of systems. For example, applicable systems may be long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, advanced long term evolution (LTE-A) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new radio (NR) systems and their evolved communication systems, etc. These various systems may include terminal devices and network devices.The system may also include core network parts, such as the Evolved Packet System (EPS), 5G System (5GS), etc.

[0080] Please refer to FIG2 , which is a flow chart of an information processing method provided by the present disclosure. The method is applied to a terminal device and includes the following steps:

[0081] S201: A first user unit receives call information sent by a first network element in a core network. The call information instructs a second user unit to respond to the call information.

[0082] S202: The first user unit sends a notification message to the second user unit, where the notification message is used to notify the second user unit to respond to the call message; wherein the first user unit and the second user unit simultaneously access one or more core networks through the first access network and the second access network respectively, and the first user unit and the second user unit have an associated relationship and are located in a terminal device that supports multiple user units.

[0083] The terminal device may support multiple USIMs. Each USIM may correspond to a user unit. For example, the terminal device may support a first USIM and a second USIM. The first USIM corresponds to the first user unit, and the second USIM corresponds to the second user unit.

[0084] According to the definition of TS22.261, Dual Steer equipment refers to equipment that supports traffic steering and user data exchange (for different services) across two 3GPP access networks.

[0085] In one example, the first user unit may be a first USIM, and the second user unit may be a second USIM. The first USIM and the second USIM are associated because they are located in the same terminal device. The first USIM and the second USIM may store corresponding association identifiers. The first USIM and the second USIM may each have a corresponding identifier (such as a permanent subscription identifier, etc.).

[0086] In one example, the first user unit may refer to a first user equipment (first UE) consisting of a first USIM and a terminal device, and the second user unit may refer to a second user equipment (second UE) consisting of the first USIM and the terminal device. The first UE and the second UE may each have a corresponding identifier (such as a permanent subscription identifier). In this example, the first user unit and the second user unit may share a subscription profile. The first user unit and the second user unit have an associated relationship.

[0087] The first user unit and the second user unit may support a multi-steer function, such as a dual-steer function.

[0088] In this embodiment, the first user unit can use the first access network to access the 5G core network, and the second user unit can use the second access network to access the 5G core network. Specifically, the first user unit and the second user unit can use their respective access networks to access the 5G core network at the same time.

[0089] The first access network and the second access network can be, for example, two 3GPP networks, and can belong to the same PLMN or different PLMNs; or to a PNI-PLMN and a PLMN, etc. The access type can be two 5G NR accesses, or one terrestrial access and one satellite access; or one 5G NR access and one 4G LTE access; or two different satellite access types, etc.

[0090] In addition, the first access network can use a 3GPP network, and the second access network can use a non-3GPP network. A non-3GPP network refers to a wireless communication network that accesses the 5G core network based on a radio access technology not defined by 3GPP, including but not limited to Bluetooth, Wi-Fi, etc.

[0091] The above-mentioned first network element (such as AMF) can store the association relationship between the first user unit and the second user unit.

[0092] As an example, a first user unit registers with the core network (for example, registers with the AMF of the core network), and the registration information includes the first dual-boot information that the terminal device where the first user unit is located supports the DualSteer function, the first user unit information (for example, the information of the first USIM), and the first preset association identifier. A second user unit registers with the core network (for example, registers with the AMF of the core network), and the registration information includes the second dual-boot information that the terminal device where the second user unit is located supports the DualSteer function, the second user unit information (for example, the information of the second USIM), and the second preset association identifier. The above-mentioned first network element (AMF) can send the first registration information and the second registration information to the third network element (for example, UDM), and the third network element identifies the association relationship between the first user unit and the second user unit based on the above-mentioned first preset association identifier and the second association identifier. The third network element can send information about the association relationship between the first user unit and the second user unit to the first network element.

[0093] A fourth network element (e.g., a UPF) in the core network can detect the arrival of downlink service data for the second user unit and send a report to the second network element (e.g., an SMF). The report indicates the arrival of downlink data for the second user unit. The second network element sends downlink signaling to the first network element based on the report, the downlink signaling including information about the second user unit. After receiving the downlink signaling, the first network element can determine the first user unit associated with the second user unit based on the association between the first and second user units.

[0094] In this embodiment, the first user unit accesses the core network through the 3GPP network.

[0095] The first network element may determine to which user unit the call information is to be sent according to parameters corresponding to the connection channel between the first user unit and the core network and the connection channel between the second user unit and the core network.

[0096] If the first network element determines to send the call information to the second user unit according to the above parameters, the call information is directly sent to the second user unit. After receiving the call information, the second user unit can respond to the call information. Specifically, the second user unit can initiate a service request based on the call information.

[0097] If the first network element determines to send a call message to the first user unit based on the parameters, the first network element sends the call message to the first user unit. The call message instructs the second user unit to respond. After receiving the call message, the first user unit may send a notification message to the second user unit. The notification message is used to notify the second user unit to respond to the call message.

[0098] In some embodiments, the above information processing method further includes: the second user unit responding to the call information according to the notification information.

[0099] After receiving the notification information, the second user unit responds to the call information. Specifically, the second user unit may initiate a service request process to respond to the call information. The second user unit may respond to the call information using the notification information from the first user unit, thereby improving the response rate of the call information.

[0100] In some embodiments, the second access network is a non-3GPP network, and the second subscriber unit responds to the call information via the second access network.

[0101] In these embodiments, the second access network is a non-3GPP network. After receiving the notification information, the second user unit responds to the call information through a connection channel corresponding to the second access network.

[0102] In some embodiments, the second access network comprises a 3GPP network, and the second subscriber unit responds to the call information via the second access network; or

[0103] The second subscriber unit switches to the first access network in response to the call information.

[0104] In some application scenarios, the second access network includes a 3GPP network, and the first access network may be a 3GPP network. The second user unit may respond to the call information using the second access network, or may switch to the first access network to respond to the call information.

[0105] In one example, the call information may carry information about the first access network or the second access network used by the second user unit to respond. For example, the first network element may obtain link quality and load information of the first access network and the second access network to determine which access network the second user unit uses to respond.

[0106] After receiving the call information, the first user unit sends a notification message to the second user unit containing the access network information determined by the first network element. After receiving the notification message, the second user unit can respond to the call information using the first access network or the second access network indicated by the notification message.

[0107] When the notification information indicates that the first access network is used to respond to the call information, the second user unit may switch the access network from the second access network to the first access network. The first access network is used to respond to the call information.

[0108] In this embodiment, for terminal devices supporting multiple USIMs, user units corresponding to different USIMs are determined, and different user units are associated with each other. When the core network receives downlink service data for one user unit, it determines other user units associated with that user unit based on the aforementioned associations. The core network can then send call information to the other user units, which in turn notify the user unit to respond. Compared to requesting a response from the user unit using only the connection channel between the user unit and the core network, this expands the ways in which the request can be sent to the user unit. This improves the reach of messages sent to user units for terminal devices supporting multiple USIMs.

[0109] Please refer to Figure 3, which is a schematic flow chart of the information processing method provided by the present disclosure. The method is applied to the first network element of the core network. As shown in Figure 3, the method includes the following steps:

[0110] S301: Receive information about downlink service data sent to a second user unit, and determine a first user unit that has an associated relationship with the second user unit; wherein the first user unit and the second user unit access the core network via a first access network and a second access network respectively; there is an associated relationship between the first user unit and the second user unit, and the first user unit and the second user unit are located in the same terminal device.

[0111] In this embodiment, the core network may be a 5G core network, including multiple network elements, such as a first network element (AMF), a second network element (SMF), a third network element (UDM), and a fourth network element (UPF).

[0112] The first user unit and the second user unit are associated with each other. The first user unit and the second user unit may be located in the same terminal device, and the terminal device supports multi-steering functions, such as dual-steering (DualSteer) functions. The first user unit and the second user unit may access the core network simultaneously. The first access network may be a 3GPP network. The second access network may include a 3GPP network and / or a non-3GPP network.

[0113] A fourth network element in the core network can detect the arrival of downlink service data sent to the second user unit. The fourth network element can send a report to the second network element. The report indicates the arrival of downlink data from the second user unit. The second network element sends downlink signaling to the first network element based on the report, the downlink signaling including information about the second user unit.

[0114] The first network element may store the association relationship between the first user unit and the second user unit. Alternatively, the first network element may obtain the association relationship from another network element. Alternatively, the first network element may determine the association relationship between the first user unit and the second user unit based on association identification information sent by different user units.

[0115] After receiving the downlink signaling, the first network element may determine the first user unit associated with the second user unit according to the association relationship between the first user unit and the second user unit.

[0116] S302: Determine the first user unit as a call target based on signaling connection information between the first user unit and the second user unit and the core network.

[0117] S303: Sending call information to the first user unit, where the call information instructs the second user unit to respond to the call.

[0118] After determining that the first user unit and the second user unit are associated, the first network element may obtain signaling connection information between the first user unit and the core network, and then determine a call destination with a higher call information reach rate based on the signaling connection information.

[0119] In some embodiments, the above step S302 includes:

[0120] The first user unit is determined as a call target based on a first parameter of a first signaling connection between the first user unit and the core network and a second parameter of a second signaling connection between the second user unit and the core network.

[0121] As an implementation manner, the first parameter includes one or more of the following:

[0122] connection status of the first user unit, load of the first access network, link quality of the first access network, capability of the first user unit, location information of the first user unit, and quality of service of the first signaling connection;

[0123] The second parameter includes one or more of the following:

[0124] the connection status of the second user unit, the load of the second access network, the link quality of the second access network, the capability of the second user unit, the location information of the second user unit, and the quality of service of the second signaling connection.

[0125] In these embodiments, the connection states of the first user unit and the second user unit include: Radio Resource Control Connected (RRC_CONNECTED) state, Radio Resource Control Inactive (RRC_INACTIVE) state and Radio Resource Control IDLE (RRC_IDLE) state.

[0126] The RRC_CONNECTED state means that the user unit has successfully completed the random access process and established an RRC connection with the network, and can perform operations such as data transmission, paging reception, and system information update.

[0127] The RRC_INACTIVE state is a state introduced by 5G NR and is located between RRC_IDLE and RRC_CONNECTED. In this state, although the user unit has no ongoing data transmission requirements, it still retains some context information to quickly recover to the RRC_CONNECTED state.

[0128] The RRC_IDLE state refers to the state in which the user unit is in when there is no active data transmission with the network. In this state, data transmission is not possible, but the user unit can still monitor the common control channel to receive broadcast information (such as system information blocks) and perform cell selection / reselection.

[0129] The first access network load and the second access network load include: the number of user units using the access network.

[0130] The first user unit capability and the second user unit capability include: supported encryption and integrity algorithms (such as encryption algorithm for user plane (EEA), integrity protection algorithm for control plane (EIA)), support for cellular Internet of Things (CIoT), device-to-device communication (Peer-to-Peer Direct Communications, ProSe), direct communication network relay (Direct Communication Network Relay, DCNR), vehicle-to-everything (V2X), etc.

[0131] The first network element may determine the calling object according to the first parameters of the first signaling connection and the second parameters of the second signaling connection.

[0132] As an example, each parameter can be normalized and a corresponding weight can be assigned to each parameter. A first cumulative sum of the products of the normalized first parameters and the corresponding weights can be calculated, as can a second cumulative sum of the products of the normalized second parameters and the corresponding weights. The first network element can determine which subscriber unit is the target of a call based on the first cumulative sum and the second cumulative sum.

[0133] The calling object may be the first user unit or the second user unit.

[0134] After determining that the calling object is the first user unit, the first network element may send a calling message to the first user unit, wherein the calling message instructs the second user unit to respond.

[0135] In this embodiment, after downlink service data is sent to a second user unit, the first network element determines the first user unit associated with the second user unit. It then determines the call recipient based on the signaling connection information between the first and second user units and the core network. After the call recipient is the first user unit, the first network element sends a call message to the first user unit. The first user unit object notifies the second user unit to respond based on the call message. Compared to requesting a response from the second user unit using only the connection channel between the second user unit and the core network, this expands the pathways for sending the request to the second user unit. This improves the reach of messages sent to user units for terminal devices supporting multiple USIMs.

[0136] In some embodiments, the information processing method further includes the following steps:

[0137] First, a first preset association identifier of a first user unit and a second preset association identifier of a second user unit are obtained; the first preset association identifier and the second preset association identifier are used to indicate that a first global user identity module corresponding to the first user unit is associated with a second global user identity module corresponding to the second user unit.

[0138] In these embodiments, the first preset association identifier and the second preset association identifier are any identifiers indicating the association between the first USIM and the second USIM.

[0139] In an example, the first preset association identifier and the second preset association identifier are the same, for example, an identifier obtained by associating at least part of the first USIM identifier with at least part of the second USIM identifier.

[0140] In an example, the first preset association identifier includes identification information of the second USIM, and the second preset association identifier includes identification information of the second USIM.

[0141] Secondly, the information of the first user unit, the information of the second user unit, the first preset association identifier and the second preset association identifier are sent to the third network element, and the third network element establishes an association relationship between the first user unit and the second user unit according to the first preset association identifier and the second preset association identifier.

[0142] Thirdly, the association relationship between the first user unit and the second user unit sent by the third network element is received and stored.

[0143] The third network element can send information about the first user unit (e.g., including information about the first USIM), information about the second user unit (e.g., including information about the second USIM), a first preset association identifier, and a second preset association identifier to the third network element. The third network element can determine, based on the above information, that the first user unit is associated with the second user unit, and save the association relationship between the first user unit and the second user unit. The third network element can also synchronize the association relationship between the first user unit and the second user unit to the first network element. In these embodiments, the determination of the association relationship between the first user unit and the second user unit by the third network element can reduce the data processing load of the first network element and ensure the normal operation of the first signaling connection and the second signaling connection.

[0144] In some embodiments, the step of obtaining the first preset association identifier of the first user unit and the second preset association identifier of the second user unit includes:

[0145] Acquire a first preset association identifier from a first registration message sent by a first user unit, and acquire a second preset association identifier from a second registration message sent by a second user unit; or

[0146] Acquire a first preset association identifier from the first user unit and a second preset association identifier from the second user unit according to the dual-boot function information in the first registration information sent by the first user unit and the second registration information sent by the second user unit; or

[0147] The first preset association identifier and the second preset association identifier are obtained from the subscription data of the first user unit and the second user unit.

[0148] The first user unit sends first registration information to the first network element to register with the core network. The second user unit sends second registration information to the first network element to register with the core network.

[0149] In some application scenarios, the first registration information may carry a first preset association identifier and dual-boot function information. The dual-boot function information indicates that the first user unit supports the dual-boot function. The second registration information may carry a second preset association identifier and dual-boot function information. The dual-boot function information indicates that the second user unit supports the dual-boot function.

[0150] After receiving the first registration information, the first network element may obtain the first preset association identifier from the first registration information according to the dual-boot function information, and after receiving the second registration information, obtain the second preset association identifier from the second registration information according to the dual-boot function information.

[0151] In some application scenarios, the first registration information and the second registration information carry dual-boot function information but do not carry an association identifier.

[0152] In these application scenarios, after receiving the first registration information, the first network element may send an association identifier acquisition request to the first user unit based on the dual-boot function information in the first registration information. The first user unit may send the first preset association identifier to the first network element based on the request.

[0153] After receiving the second registration information, the first network element may send an association identifier acquisition request to the second user unit according to the dual-boot function information in the second registration information. The second user unit may send a second preset association identifier to the first network element according to the request.

[0154] In some application scenarios, the third network element (UDM) stores the subscription data of the first user unit and the second user unit. The first registration information sent by the first user unit to the first network element and the second registration information sent by the second user unit to the first network element carry the dual boot function information but do not carry the association identifier.

[0155] The first network element may obtain the subscription data of the first user unit from the third network element based on the dual-boot function information in the first registration information, and may obtain the subscription data of the second user unit from the third network element based on the dual-boot function information in the second registration information. The first network element obtains a first preset association identifier of the first user unit and a second preset association identifier of the second user unit from the subscription data.

[0156] In these application scenarios, the first network element may obtain the association identifier in different ways to determine the association relationship between the first user unit and the second user unit.

[0157] Please refer to Figure 4, which is an interactive schematic diagram of establishing an association relationship between a first user unit and a second user unit provided by the present disclosure. As shown in Figure 4, as shown in Figure 4, the terminal device can correspond to multiple user units that support the DualSteer function, such as a first user unit and a second user unit. In some embodiments, multiple USIM cards can be installed in the above-mentioned terminal device, and the above-mentioned first user unit can be a user unit composed of a first USIM and a signal transceiver module in the terminal device. The second user unit can be a user unit composed of a second USIM and a signal transceiver module in the above-mentioned terminal device. The above-mentioned first user unit and the second user unit can exchange information with the access network. The first preset association identifier can be stored in the first USIM. The second preset association identifier can be stored in the second USIM.

[0158] As shown in Figure 4, during registration, the first USIM copies its first preset identifier and subscription information to the first user unit of the terminal device. The terminal device then sends first registration information 401 to the first network element AMF1 of the core network via radio access network 1 (new radio access network, NR) and / or radio access network 2 (satellite access network). The first registration information carries dual-boot function information and includes: information that the first user unit supports dual-boot function, information about the first USIM corresponding to the first user unit, and a first preset association identifier.

[0159] In some embodiments, the first registration information carries information about the dual-boot function but does not carry the first preset association identifier. After receiving the first registration information, the first network element AMF1 may send an association identifier request to the first user unit based on the dual-boot function. The first user unit sends the first preset association identifier 402 to the first network element based on the request.

[0160] After receiving the first registration information, the first network element AMF1 sends a subscription data acquisition request to the third network element (UDM), which carries the first preset association identifier and information of the first user unit 403. The third network element saves the mapping between the first preset association identifier and the first user unit 404.

[0161] The second USIM copies the second preset identifier and subscription information to the second user unit of the terminal device. The terminal device then sends second registration information 405 to the first network element AMF2 of the core network via radio access network 1 (new air interface access network) and / or radio access network 2 (satellite access network). The second registration information includes: information indicating that the second user unit supports the dual-boot function, information about the second USIM corresponding to the second user unit, and the second preset association identifier.

[0162] In some embodiments, the second registration information carries information about the dual-boot function but does not carry the second preset association identifier. After receiving the second registration information, the first network element AMF2 may send an association identifier request 406 to the second user unit based on the information about the dual-boot function. The second user unit sends the second preset association identifier to the first network element AMF2 based on the request.

[0163] After receiving the second registration information, the first network element AMF2 sends a subscription data acquisition request 407 to the third network element (UDM). The request carries the second preset association identifier and information about the second user unit. The third network element determines that there is an association relationship between the first user unit and the second user unit based on the second preset association identifier and the first preset association identifier, and saves the association relationship between the first user unit and the second user unit 408.

[0164] The third network element may synchronize the association relationship between the first user unit and the second user unit to the first network element (AMF1 and AMF2) 409.

[0165] In some embodiments, the UDM's terminal subscription data stores a mapping between an association identifier and a subscriber unit. In these embodiments, the first registration information carries information about the dual-boot function, but does not carry the first preset association identifier. After receiving the first registration information, the first network element AMF1 can send a first subscription data acquisition request to the UDM based on the dual-boot function information. This request carries information about the first subscriber unit and the dual-boot function information. The UDM returns the subscription data (carrying the first preset identifier) ​​to the first network element AMF1. The second registration information carries information about the dual-boot function, but does not carry the second preset association identifier. After receiving the second registration information, the first network element AMF2 can send a second subscription data acquisition request to the UDM based on the dual-boot function information. This request carries information about the second subscriber unit and the dual-boot function information. The UDM returns the subscription data (carrying the second preset identifier) ​​to the first network element AMF2. Furthermore, the UDM determines the first preset association identifier corresponding to the first subscriber unit and the second preset association identifier corresponding to the second subscriber unit based on the dual-boot function information in the first and second subscription data acquisition requests. Based on the first and second preset association identifiers, it is determined that the first and second subscriber units have an association relationship. The UDM stores the association relationship between the first user unit and the second user unit, and synchronizes it to the first network element AMF1 and AMF2.

[0166] Please refer to FIG5 , which is an interactive schematic diagram of the information processing method provided by the present disclosure.

[0167] As shown in Figure 5, a first user unit registers with the core network, and the registration information includes dual-booting capability information and a first preset association identifier 501. A second user unit registers with the core network, and the registration information includes dual-booting capability information and a first preset association identifier 502. A third network element (e.g., a UDM) establishes an association between the first and second user units based on the first and second preset identifiers, and synchronizes the association to the first network element (AMF).

[0168] When the second user unit is in the idle state (IDLE state), the user plane function (UPF) network element in the core network detects the arrival of downlink service data sent to the second user unit 503. The UPF sends a report to the second network element (SMF). Based on the report, the SMF sends a notification 504 to the first network element to call the second user unit.

[0169] The AMF chooses to directly call the second user unit or notify / call the first user unit based on the association identifier 505. Specifically, the AMF may determine the first user unit associated with the second user unit based on the stored association relationship between the first user unit and the second user unit. The first network element may obtain a first parameter of the first signaling connection between the first user unit and the core network, and a second parameter of the second signaling connection between the second user unit and the core network. Based on the second parameter and the first parameter, the AMF may determine whether to send call information to the first user unit. The first network element AMF may then send the call information to the first user unit.

[0170] The call information instructs the second user unit to respond. After receiving the call information, the first user unit notifies the second user unit to respond through a preset interface in the terminal device according to the instruction information, that is, sends a notification 507 to the second user unit. After receiving the notification, the second user unit can respond to the service request according to the notification (specifically, it can initiate a service request process).

[0171] For example, when the first user unit is in an idle state, the first network element may send a call message 506 to the first user unit, where the call message instructs the first user unit to notify the second user unit to respond to the call message.

[0172] When the first user unit is in a connected state, the first network element sends a first notification message 506 to the first user unit, instructing the second user unit to initiate a service request process. After receiving the first notification message, the first user unit sends a notification to the second user unit via a preset interface in the terminal device. The second user unit can initiate a service request (service request) via the second signaling connection.

[0173] In some embodiments, the first network element sends a second notification message to the first user unit, where the second notification message is used to notify the second user unit to switch the PDU session corresponding to the downlink data to the network where the first user unit's signaling connection is located. In other words, the second user unit can switch to the first access network to establish a signaling connection with the core network, and then initiate a service request on the signaling connection to respond to the call information.

[0174] Please refer to FIG6 , which is an interactive diagram of the information processing method provided by the present disclosure.

[0175] FIG6 is an interactive diagram of the information processing method provided by the present disclosure; the terminal device can support multiple user units, such as a first user unit and a second user unit. The first user unit and the second user unit support a dual-boot function.

[0176] As shown in Figure 6, a first user unit sends first registration information 601 to a first network element of a core network via a 3GPP network. The first registration information includes information indicating that the first user unit supports dual-boot functionality, information about a first USIM corresponding to the first user unit, and a first preset association identifier. After receiving the first registration information, the first network element may store it.

[0177] The second user unit sends second registration information 602 to the first network element via a 3GPP or non-3GPP network (e.g., a wireless local area network (WLAN)). The second registration information includes: information that the second user unit supports the dual boot function, information about the second USIM corresponding to the second user unit, and a second preset association identifier.

[0178] The first network element (AMF) sends a subscription information acquisition request carrying the information of the first user unit and the first preset association identifier to the third network element (such as UDM or UDR). The third network element can establish a mapping between the first user unit and the first preset association identifier based on the subscription information acquisition request. Similarly, the first network element sends a subscription information acquisition request carrying the information of the second user unit and the second preset association identifier to the third network element. The UDM can then associate the first user unit with the second user unit based on the second preset association identifier in the subscription information acquisition request. The third network element can synchronize the association relationship between the first user unit and the second user unit to the first network element.

[0179] The second user unit is in an idle state. The UPF network element in the core network detects the arrival of downlink service data sent to the second user unit 603. The UPF sends a report to the second network element (SMF). Based on the report, the SMF sends a notification 604 to the first network element (AMF) to call the second user unit.

[0180] The AMF chooses to directly call the second user unit or notify / call the first user unit according to the association identifier 605. Specifically, the AMF may determine the first user unit associated with the second user unit according to the stored association relationship between the first user unit and the second user unit, and then may choose to notify or call the first user unit.

[0181] If the second user unit is registered with the core network via a non-3GPP access network, the first network element may choose to call the second user unit via the second user unit's non-3GPP connection or notify / call the first user unit based on the association identifier. If the first network element chooses to notify / call the first user unit, after receiving the call, the first user unit notifies the second user unit to initiate a service request.

[0182] If the second user unit accesses the core network through the 3GPP access network, the first network element can determine which user unit is the calling party according to the interaction method shown in FIG5 .

[0183] If it is determined to call the second user unit, the first network element sends call information to the second user unit, and the second user unit initiates a service request according to the call information.

[0184] If the first user unit is determined to be the target of the call, the first network element may send a call message to the first user unit based on the first user unit being in an idle state, or send a notification message to the first user unit based on the first user unit being in a connected state 606. After receiving the call message, the first user unit may notify the second user unit to respond 607.

[0185] In some embodiments, the information processing method further includes the following steps:

[0186] According to the acquisition request of the second network element, the association relationship between the first user unit and the second user unit and the preset parameters corresponding to the first user unit and the second user unit are sent to the second network element, wherein the second network element switches the PDU session of the second user unit to the first user unit according to the preset parameters and contract information corresponding to the first user unit and the second user unit.

[0187] In these embodiments, after receiving the report information that downlink service data is sent to the second user unit, the second network element may send an acquisition request to the first network element. The acquisition request is used to obtain information about preset parameters corresponding to the first user unit and the second user unit. The above-mentioned preset parameters include but are not limited to one or more of the following: connection status, access network load. For example, the connection status of the first user unit, the load of the first access network; the connection status of the second user unit, the load of the second access network, etc. The second network element may also obtain the contract data corresponding to the first user unit and the second user unit respectively from the UDM. The second network element may determine whether to switch the PDU session of the second user unit to the first user unit based on the above-mentioned preset parameters and contract data information corresponding to the first user unit and the second user unit respectively.

[0188] In one example, if the second network element determines that a fault or severe congestion exists in the second access network according to the state of the second user unit's access network, it may determine to switch the PDU session of the second user unit to the first user unit.

[0189] After the PDU session of the second user unit is switched to the first user unit, the second network element may directly send a notification message to the first network element indicating that the first user unit has responded to the service data. After receiving the notification message, the first network element may send a call message to the first user unit, instructing the first user unit to respond.

[0190] In these embodiments, the second network element switches the PDU session of the second user unit to the first user unit according to the preset parameters and subscription information corresponding to the first user unit and the second user unit, which can further improve the success rate of responding to downlink service data.

[0191] Please refer to Figure 7, which is a schematic flow chart of the information processing method provided by the present disclosure. The method is applied to the second network element of the core network. As shown in Figure 7, the method includes the following steps:

[0192] S701: Receive information that downlink service data is sent to a second user unit, and obtain a first user unit that has an association relationship with the second user unit from a first network element, wherein the first user unit and the second user unit simultaneously access the core network through the first access network and the second access network respectively, and the first user unit has an association relationship with the second user unit.

[0193] S702: According to the third preset parameter corresponding to the first user unit, the fourth preset parameter corresponding to the second user unit and the contract data, determine that the first user unit is the response object, and switch the PDU session of the second user unit to the first user unit.

[0194] The first user unit and the second user unit are located in the same terminal device. The first user unit corresponds to a first USIM, and the second user unit corresponds to a second USIM. The first user unit accesses the core network through a first access network. The second user unit accesses the core network through a second access network.

[0195] The following description is made with reference to FIG8 . FIG8 is an interactive diagram of the information processing method provided by the present disclosure. As shown in FIG8 , a first user unit is registered with core network 801, and a second user unit is registered with core network 802. The registration information of the first user unit, for example, includes information that the first user unit supports the dual-boot function and a first preset association identifier. The registration information of the second user unit, for example, includes information that the second user unit supports the dual-boot function and a second preset association identifier.

[0196] The first network element (such as an AMF) may send the first preset association identifier and the second preset association identifier to a third network element. The third network element (UDM or UDR) establishes an association relationship between the first user unit and the second user unit based on the first preset association identifier and the second preset association identifier. The third network element synchronizes the association relationship with the first network element.

[0197] The second user unit is in an idle state, and the fourth network element (UPF) detects that downlink service data sent to the second user unit has arrived, and sends a report message to the second network element. The report message indicates that downlink data from the second user unit has arrived 803.

[0198] The second network element (SMF) requests the first network element for the association relationship of the second user unit's downlink data (associated user unit) and the connection status 804 of the first user unit and the second user unit.

[0199] Specifically, the second network element determines that the second user unit supports the dual boot function based on the dual boot function information carried when the second user unit establishes the PDU request. The second network element may request the first network element for the user unit information associated with the second user unit (the first user unit). As an implementation, the second network element may store the association relationship between the first user unit and the second user unit.

[0200] The second network element may obtain a third preset parameter of the first user unit from the first network element. The third preset parameter includes one or more of the following: a connection state of the first user unit, a load state of the first access network, and subscription information of the first user unit;

[0201] The second network element may obtain a fourth preset parameter of the second user unit from the first network element. The fourth preset parameter includes one or more of the following: connection status of the second user unit, load status of the second access network, and subscription information of the second user unit.

[0202] The second network element may analyze the third preset parameter, the fourth preset parameter, and the subscription data to determine whether the first user unit is the response object or the second user unit is the response object 805 .

[0203] After determining that the first user unit is the response target, the second network element can switch the second user unit's protocol data unit session (PDU session) to the first user unit 806. The first user unit then responds to the service data based on the signaling connection between it and the core network.

[0204] It is understandable that, after determining that the second user unit is the response object, the second network element can send a notification message of calling the second user unit to the first network element. After receiving the above notification message, the first network element can select to call the first user unit or the second user unit according to the embodiment shown in Figure 3. For the specific process, please refer to the relevant parts of the embodiment shown in Figure 3.

[0205] In this embodiment, the second network element switches the PDU session of the second user unit to the first user unit according to the preset parameters and subscription information corresponding to the first user unit and the second user unit, which can further improve the success rate of responding to downlink service data.

[0206] The present disclosure provides a terminal device. FIG9 is a schematic diagram of the structure of the terminal device provided by the present disclosure. As shown in FIG9, the terminal device 900 includes: a first user unit 901 and a second user unit 902, wherein:

[0207] The first user unit 901 receives call information sent by the first network element in the core network, where the call information instructs the second user unit to respond to the call information;

[0208] The first user unit 901 sends notification information to the second user unit, where the notification information is used to notify the second user unit to respond to the call information; wherein the first user unit and the second user unit simultaneously access one or more core networks through the first access network and the second access network respectively, and the first user unit and the second user unit have an associated relationship and are located in a terminal device that supports multiple user units.

[0209] In some embodiments, the second user unit 902 responds to the call information according to the notification information.

[0210] In some embodiments, the second access network is a non-3GPP network, and the second subscriber unit responds to the call information via the second access network.

[0211] In some embodiments, the second access network comprises a 3GPP network, and the second subscriber unit responds to the call information via the second access network; or

[0212] The second subscriber unit switches to the first access network in response to the call information.

[0213] It should be noted here that the above-mentioned terminal device provided in the embodiment of the present disclosure can implement all the method steps implemented by the method embodiment in which the execution subject is the terminal device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0214] The embodiment of the present disclosure provides an information processing device. FIG10 is a schematic diagram of the structure of the information processing device provided by the embodiment of the present disclosure. As shown in FIG10, the device 1000 is applied to a first network element and includes: a first receiving module 1001, a call object determination module 1002 and a first sending module 1003, wherein:

[0215] A first receiving module 1001 is configured to receive information about downlink service data sent to a second user unit, and determine a first user unit associated with the second user unit; wherein the first user unit and the second user unit access the core network via a first access network and a second access network, respectively; the first user unit and the second user unit are associated with each other, and the first user unit and the second user unit are located in the same terminal device;

[0216] A call object determination module 1002 is configured to determine the first user unit as a call object based on signaling connection information between the first user unit and the second user unit and the core network;

[0217] The first sending module 1003 is configured to send call information to the first user unit, where the call information instructs the second user unit to respond to the call.

[0218] In some embodiments, the call object determination module 1002 is further configured to determine the first user unit as the call object based on a first parameter of a first signaling connection between the first user unit and the core network and a second parameter of a second signaling connection between the second user unit and the core network.

[0219] In some embodiments, the first parameter includes one or more of the following:

[0220] connection status of the first user unit, load of the first access network, link quality of the first access network, capability of the first user unit, location information of the first user unit, and quality of service of the first signaling connection;

[0221] The second parameter includes one or more of the following:

[0222] the connection status of the second user unit, the load of the second access network, the link quality of the second access network, the capability of the second user unit, the location information of the second user unit, and the quality of service of the second signaling connection.

[0223] In some embodiments, the device also includes a second switching module (not shown in the figure), and the second switching module is used to: send information about the association relationship between the first user unit and the second user unit, and the preset parameters corresponding to the first user unit and the second user unit to the second network element according to the acquisition request of the second network element, wherein the second network element switches the PDU session of the second user unit to the first user unit according to the preset parameters and contract information corresponding to the first user unit and the second user unit.

[0224] In some embodiments, the device also includes an association module (not shown in the figure), which is used to: obtain a first preset association identifier of the first user unit and a second preset association identifier of the second user unit; the first preset association identifier and the second preset association identifier are used to indicate that the first global user identity module corresponding to the first user unit is associated with the second global user identity module corresponding to the second user unit; send the information of the first user unit, the information of the second user unit, the first preset association identifier and the second preset association identifier to a third network element, and the third network element establishes an association relationship between the first user unit and the second user unit based on the first preset association identifier and the second preset association identifier; receive and store the association relationship between the first user unit and the second user unit sent by the third network element.

[0225] In some embodiments, the association module is further used to: obtain a first preset association identifier from the first registration information sent by the first user unit, and obtain a second preset association identifier from the second registration information sent by the second user unit; or obtain the first preset association identifier from the first user unit and the second preset association identifier from the second user unit based on the dual-boot function information in the first registration information sent by the first user unit and the second registration information sent by the second user unit; or obtain the first preset association identifier and the second preset association identifier from the contract data of the first user unit and the second user unit.

[0226] It should be noted here that the above-mentioned information processing device provided in the embodiment of the present disclosure can implement all the method steps implemented in the method embodiment in which the execution subject is the first network element, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0227] The embodiment of the present disclosure provides an information processing device. FIG11 is a structural diagram of the information processing device provided by the embodiment of the present disclosure. As shown in FIG11 , the device 1100 is applied to the second network element, including: a second receiving module 1101, a first switching module 1102, wherein,

[0228] The second receiving module 1101 is configured to receive information that downlink service data is sent to a second user unit, and obtain a first user unit associated with the second user unit from the first network element, wherein the first user unit and the second user unit simultaneously access the core network through the first access network and the second access network respectively, and the first user unit and the second user unit have an associated relationship;

[0229] The first switching module 1102 is used to determine that the first user unit is the response object according to the third preset parameter corresponding to the first user unit, the fourth preset parameter corresponding to the second user unit and the contract data, and switch the PDU session of the second user unit to the first user unit.

[0230] In some embodiments, the third parameter includes one or more of the following:

[0231] The connection status of the first user unit, the load status of the first access network, and the subscription information of the first user unit;

[0232] The fourth parameter includes one or more of the following:

[0233] The connection status of the second user unit, the load status of the second access network, and the subscription information of the second user unit.

[0234] It should be noted here that the above-mentioned information processing device provided in the embodiment of the present disclosure can implement all the method steps implemented in the method embodiment in which the execution subject is the second network element, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0235] Please refer to FIG12 , which shows an information processing device according to an embodiment of the present disclosure, including a memory 1201 , a transceiver 1202 , and a processor 1203 :

[0236] The memory 1201 is used to store computer programs; the transceiver 1202 is used to send and receive data under the control of the processor; the processor 1203 is used to read the computer program in the memory and perform the following operations:

[0237] receiving information of downlink service data sent to a second user unit, and determining a first user unit associated with the second user unit; wherein the first user unit and the second user unit access the core network via a first access network and a second access network, respectively; the first user unit and the second user unit have an associated relationship, and the first user unit and the second user unit are located in the same terminal device;

[0238] Determining the first user unit as a call target based on signaling connection information between the first user unit and the second user unit and the core network;

[0239] A call message is sent to the first user unit, the call message instructing the second user unit to respond to the call.

[0240] The transceiver 1202 is configured to receive and send data under the control of the processor 1203 .

[0241] In FIG12 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits represented by one or more processors 1203 and memory 1201. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like. The processor 1203 is responsible for managing the bus architecture and general processing, and the memory 1201 may store data used by the processor 1203 when performing operations.

[0242] The processor 1203 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor 1203 may also adopt a multi-core architecture.

[0243] In some embodiments, determining the first user unit as a call target based on signaling connection information between the first user unit and the second user unit and the core network includes:

[0244] The first user unit is determined as a call target based on a first parameter of a first signaling connection between the first user unit and the core network and a second parameter of a second signaling connection between the second user unit and the core network.

[0245] In some embodiments, the first parameter includes one or more of the following:

[0246] connection status of the first user unit, load of the first access network, link quality of the first access network, capability of the first user unit, location information of the first user unit, and quality of service of the first signaling connection;

[0247] The second parameter includes one or more of the following:

[0248] the connection status of the second user unit, the load of the second access network, the link quality of the second access network, the capability of the second user unit, the location information of the second user unit, and the quality of service of the second signaling connection.

[0249] In some embodiments, the processor 1203 is further configured to:

[0250] According to the acquisition request of the second network element, the association relationship between the first user unit and the second user unit and the preset parameters corresponding to the first user unit and the second user unit are sent to the second network element, wherein the second network element switches the PDU session of the second user unit to the first user unit according to the preset parameters and subscription information corresponding to the first user unit and the second user unit. In some embodiments, the processor 1203 is further configured to:

[0251] Obtaining a first preset association identifier of a first user unit and a second preset association identifier of a second user unit; the first preset association identifier and the second preset association identifier are used to indicate that a first global user identity module corresponding to the first user unit is associated with a second global user identity module corresponding to the second user unit;

[0252] Sending information of the first user unit, information of the second user unit, a first preset association identifier, and a second preset association identifier to a third network element, whereby the third network element establishes an association relationship between the first user unit and the second user unit based on the first preset association identifier and the second preset association identifier;

[0253] Receive and store the association relationship between the first user unit and the second user unit sent by the third network element.

[0254] In some embodiments, obtaining a first preset association identifier of a first user unit and a second preset association identifier of a second user unit includes:

[0255] Obtaining a first preset association identifier from a first registration message sent by a first user unit, and obtaining a second preset association identifier from a second registration message sent by a second user unit; or

[0256] Acquire a first preset association identifier from the first user unit and a second preset association identifier from the second user unit based on the dual-boot function information in the first registration information sent by the first user unit and the second registration information sent by the second user unit; or

[0257] The first preset association identifier and the second preset association identifier are obtained from the subscription data of the first user unit and the second user unit.

[0258] It should be noted here that the above-mentioned information processing device provided in the embodiment of the present disclosure can implement all the method steps implemented in the method embodiment in which the execution subject is the first network element, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0259] Please refer to Figure 13, which is a schematic diagram of the structure of an information processing device provided by an embodiment of the present disclosure. As shown in Figure 13, the device includes a memory 1301, a transceiver 1302, and a processor 1303. The memory 1301 is used to store computer programs; the transceiver 1302 is used to send and receive data under the control of the processor; and the processor 1303 is used to read the computer program in the memory and perform the following operations:

[0260] receiving information that downlink service data is sent to a second user unit, and obtaining a first user unit associated with the second user unit from a first network element, wherein the first user unit and the second user unit simultaneously access a core network through a first access network and a second access network respectively, and the first user unit and the second user unit have an associated relationship;

[0261] According to the third preset parameter corresponding to the first user unit, the fourth preset parameter corresponding to the second user unit and the contract data, the first user unit is determined to be the response object, and the PDU session of the second user unit is switched to the first user unit.

[0262] The transceiver 1302 is configured to receive and send data under the control of the processor 1303 .

[0263] In FIG13 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits represented by one or more processors 1303 and memory 1301. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, all of which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like. The processor 1303 is responsible for managing the bus architecture and general processing, and the memory 1301 may store data used by the processor 1303 when performing operations.

[0264] Processor 1303 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD). Processor 1303 may also employ a multi-core architecture. In some embodiments, the third parameter includes one or more of the following:

[0265] The connection status of the first user unit, the load status of the first access network, and the subscription information of the first user unit;

[0266] The fourth parameter includes one or more of the following:

[0267] The connection status of the second user unit, the load status of the second access network, and the subscription information of the second user unit.

[0268] It should be noted here that the above-mentioned information processing device provided in the embodiment of the present disclosure can implement all the method steps implemented in the method embodiment in which the execution subject is the second network element, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0269] The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing device connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). A wireless terminal device may be a USB storage device, other personal computer memory devices, and a dongle. It may also communicate with one or more core networks (CN) via a radio access network (RAN). A wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), personal computers, tablet computers, Machine-type Communication (MTC) terminal devices, etc. Wireless terminal devices may also be referred to as systems, subscriber units, subscriber stations, mobile stations, mobile stations, remote stations, access points, remote terminal devices, access terminal devices, user terminal devices, user agents, user devices, and wireless access points and routers / modems that meet the limitations of this definition, but are not limited in the embodiments of the present disclosure.

[0270] The network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services to the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be an evolutionary network device (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation 5G network architecture, etc., or a home evolved Node B (HeNB), a relay node, a femto, a pico base station, a network test device, etc., which is not limited in the embodiments of the present disclosure. In some network structures, network devices may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0271] The terminal device in the embodiment of the present disclosure sends relevant information or similar descriptions to the network side device, which only indicates that the terminal device sends the relevant information in the form of a wireless signal, and its intended recipient is the network device. The network device can obtain the relevant information by receiving the wireless signal.

[0272] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0273] It should be noted that the division of units / modules in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units / modules in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0274] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc. Various media that can store program codes.

[0275] On the terminal side, an embodiment of the present disclosure provides a processor-readable storage medium (non-transitory readable storage medium), which stores a computer program. The computer program is used to enable the processor to implement all the method steps implemented on the terminal device side of the above-mentioned method embodiment, and to achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here. Among them, the processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0276] On the terminal side, an embodiment of the present disclosure also provides a computer program product comprising instructions, the computer program is stored in a storage medium, at least one processor can read the computer program from the storage medium, and when at least one processor executes the computer program, it can implement all the method steps implemented by the terminal device in the above method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0277] On the first network element and the second network element side, the embodiment of the present disclosure provides a processor-readable storage medium (non-transitory readable storage medium), the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to implement all the method steps implemented by the first network element or the second network element in the above method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here. Among them, the processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0278] On the first network element and the second network element side, an embodiment of the present disclosure also provides a computer program product comprising instructions, the computer program is stored in a storage medium, at least one processor can read the computer program from the storage medium, and when at least one processor executes the computer program, it can implement all the method steps implemented by the first network element or the second network element in the above method embodiment, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0279] The present disclosure also provides a communication system, including a terminal device, a first network element, and a second network element. The terminal device is capable of executing all the method steps executed by the terminal device in the aforementioned method embodiment, and can achieve the same technical effects. The first network element and the second network element are capable of executing all the method steps executed by the first network element and the second network element in the aforementioned method embodiment, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are identical to those of the method embodiment will not be further detailed herein.

[0280] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0281] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO)), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid-state drives (SSDs)), etc.

[0282] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0283] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0284] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0285] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. An information processing method, comprising: The first user unit receives call information sent by the first network element in the core network, where the call information instructs the second user unit to respond to the call information; The first user unit sends notification information to the second user unit, where the notification information is used to notify the second user unit to respond to the call information; The first user unit and the second user unit access one or more core networks simultaneously through the first access network and the second access network respectively. The first user unit and the second user unit have an associated relationship and are located in a terminal device that supports multiple user units.

2. The method according to claim 1, wherein The method further comprises: The second user unit responds to the call information according to the notification information.

3. The method according to claim 2, characterized in that The second access network is a non-3GPP network, and the second subscriber unit responds to the call information via the second access network.

4. The method according to claim 2 or 3, wherein: The second access network includes a third generation partnership project network, and the second user unit responds to the call information through the second access network; or The second subscriber unit switches to the first access network in response to the call information.

5. An information processing method, applied to a first network element of a core network, comprising: receiving information that downlink service data is sent to a second user unit, and determining a first user unit associated with the second user unit; wherein the first user unit and the second user unit access a core network via a first access network and a second access network, respectively; the first user unit and the second user unit have an associated relationship, and the first user unit and the second user unit are located in the same terminal device; determining, based on signaling connection information between the first user unit and the second user unit and the core network, the first user unit as a call target; The call information is sent to the first user unit, and the call information instructs the second user unit to respond to the call.

6. The method according to claim 5, wherein: The determining, based on signaling connection information between the first user unit and the second user unit and the core network, the first user unit as a call target includes: The first user unit is determined as a call target according to a first parameter of a first signaling connection between the first user unit and the core network and a second parameter of a second signaling connection between the second user unit and the core network.

7. The method according to claim 6, wherein: The first parameter includes one or more of the following: the connection status of the first user unit, the first access network load, the first access network link quality, the first user unit capability, the location information of the first user unit, and the quality of service of the first signaling connection; The second parameter includes one or more of the following: The connection status of the second user unit, the load of the second access network, the link quality of the second access network, the capability of the second user unit, the location information of the second user unit and the quality of service of the second signaling connection.

8. The method according to any one of claims 5 to 7, wherein: The method further comprises: According to the acquisition request of the second network element, the association relationship between the first user unit and the second user unit, and the information of the preset parameters corresponding to the first user unit and the second user unit are sent to the second network element, wherein the second network element switches the PDU session of the second user unit to the first user unit according to the preset parameters and contract information corresponding to the first user unit and the second user unit.

9. The method according to any one of claims 5 to 8, wherein: The method further comprises: Obtaining a first preset association identifier of the first user unit and a second preset association identifier of the second user unit; the first preset association identifier and the second preset association identifier are used to indicate that a first global subscriber identity module corresponding to the first user unit is associated with a second global subscriber identity module corresponding to the second user unit; Sending information about the first user unit, information about the second user unit, the first preset association identifier, and the second preset association identifier to a third network element, whereby the third network element establishes an association relationship between the first user unit and the second user unit based on the first preset association identifier and the second preset association identifier; Receive and store the association relationship between the first user unit and the second user unit sent by the third network element.

10. The method according to claim 9, wherein: The acquiring of the first preset association identifier of the first user unit and the second preset association identifier of the second user unit includes: Acquire a first preset association identifier from the first registration information sent by the first user unit, and acquire a second preset association identifier from the second registration information sent by the second user unit; or, acquiring a first preset association identifier from the first user unit and a second preset association identifier from the second user unit based on the dual-boot function information in the first registration information sent by the first user unit and the second registration information sent by the second user unit; or The first preset association identifier and the second preset association identifier are obtained from subscription data of the first user unit and the second user unit.

11. An information processing method, applied to a second network element of a core network; wherein: include: receiving information that downlink service data is sent to a second user unit, and obtaining, from a first network element, a first user unit associated with the second user unit, wherein the first user unit and the second user unit simultaneously access a core network through a first access network and a second access network, respectively, and the first user unit and the second user unit have an associated relationship; According to the third preset parameter corresponding to the first user unit, the fourth preset parameter corresponding to the second user unit and the contract data, the first user unit is determined to be the response object, and the PDU session of the second user unit is switched to the first user unit.

12. The method according to claim 11, wherein The third parameter includes one or more of the following: The connection status of the first user unit, the load status of the first access network, and the subscription information of the first user unit; The fourth parameter includes one or more of the following: The connection status of the second user unit, the load status of the second access network, and the subscription information of the second user unit.

13. A terminal device comprising a first user unit and a second user unit, The first user unit receives call information sent by a first network element in the core network, where the call information instructs the second user unit to respond to the call information; The first user unit sends notification information to the second user unit, where the notification information is used to notify the second user unit to respond to the call information; in, The first user unit and the second user unit simultaneously access one or more core networks through the first access network and the second access network respectively. The first user unit and the second user unit are associated with each other and are located in the terminal device that supports multiple user units.

14. An information processing device, applied to a first network element of a core network, wherein: include: a first receiving module, configured to receive information about downlink service data sent to a second user unit, and determine a first user unit associated with the second user unit; wherein the first user unit and the second user unit access the core network via a first access network and a second access network, respectively; the first user unit and the second user unit are associated with each other, and the first user unit and the second user unit are located in the same terminal device; a call object determination module, configured to determine the first user unit as a call object based on signaling connection information between the first user unit and the second user unit and the core network; The first sending module is configured to send the call information to the first user unit, where the call information instructs the second user unit to respond to the call.

15. An information processing device, applied to a second network element of a core network, wherein: include: a second receiving module, configured to receive information that downlink service data is sent to a second user unit, and obtain, from a first network element, a first user unit associated with the second user unit, wherein the first user unit and the second user unit simultaneously access the core network through a first access network and a second access network respectively, and the first user unit and the second user unit have an associated relationship; The first switching module is used to determine that the first user unit is the response object according to the third preset parameter corresponding to the first user unit, the fourth preset parameter corresponding to the second user unit and the contract data, and switch the PDU session of the second user unit to the first user unit.

16. An information processing device, wherein: Including memory, transceiver, processor: memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: receiving information that downlink service data is sent to a second user unit, and determining a first user unit associated with the second user unit; wherein the first user unit and the second user unit access a core network via a first access network and a second access network, respectively; the first user unit and the second user unit have an associated relationship, and the first user unit and the second user unit are located in the same terminal device; determining, based on signaling connection information between the first user unit and the second user unit and the core network, the first user unit as a call target; The call information is sent to the first user unit, and the call information instructs the second user unit to respond to the call.

17. An information processing device, wherein: Including memory, transceiver, processor: memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: receiving information that downlink service data is sent to a second user unit, and obtaining, from a first network element, a first user unit associated with the second user unit, wherein the first user unit and the second user unit simultaneously access a core network through a first access network and a second access network, respectively, and the first user unit and the second user unit have an associated relationship; According to the third preset parameter corresponding to the first user unit, the fourth preset parameter corresponding to the second user unit and the contract data, the first user unit is determined to be the response object, and the PDU session of the second user unit is switched to the first user unit.

18. A non-transitory readable storage medium, wherein: The non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the method according to any one of claims 1 to 12.

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