CN113574936A - Wireless communication method, terminal equipment and network equipment - Google Patents

Wireless communication method, terminal equipment and network equipment Download PDF

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Publication number
CN113574936A
CN113574936A CN201980094203.2A CN201980094203A CN113574936A CN 113574936 A CN113574936 A CN 113574936A CN 201980094203 A CN201980094203 A CN 201980094203A CN 113574936 A CN113574936 A CN 113574936A
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China
Prior art keywords
core network
information
terminal device
network type
type
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CN201980094203.2A
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Chinese (zh)
Inventor
许阳
杨宁
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/18—Selecting a network or a communication service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks

Abstract

A method, a terminal device and a network device of wireless communication, the method comprising: the method comprises the steps that a terminal device determines a preferred core network type according to first information or second information, wherein the first information is information which is configured by a network device and used for core network selection, and the second information is historical information selected by a core network of the terminal device; and the terminal equipment preferentially selects to initiate a registration process to the core network of the preferred core network type.

Description

Wireless communication method, terminal equipment and network equipment Technical Field
The embodiment of the application relates to the field of communication, in particular to a wireless communication method, terminal equipment and network equipment.
Background
In a New Radio (NR) system, two modes, namely, a stand-alone (SA) networking mode and a Non-stand-alone (NSA) networking mode are supported, wherein for the SA network, a Core network is a 5G Core (5G Core, 5GC) network, and for the NSA network, the Core network is an Evolved Packet Core (EPC).
When the area where the terminal device is located includes both SA and NSA networks, that is, the network device is covered by 5GC and EPC, the terminal device selects which core network to access for registration so as to improve the probability of successful registration, which is a problem to be solved urgently.
Disclosure of Invention
The embodiment of the application provides a wireless communication method, terminal equipment and network equipment, which are beneficial to improving the probability of successful registration of a core network.
In a first aspect, a method of wireless communication is provided, including: the method comprises the steps that a terminal device determines a preferred core network type according to first information or second information, wherein the first information is information which is configured by a network device and used for core network selection, and the second information is historical information selected by a core network of the terminal device; and the terminal equipment preferentially selects to initiate a registration process to the core network of the preferred core network type.
In a second aspect, a method of wireless communication is provided, including: the method comprises the steps that network equipment sends first information to terminal equipment, the first information is used for the terminal equipment to determine the preferred core network type, and the first information is information which is configured by the network equipment and used for core network selection.
In a third aspect, a terminal device is provided, configured to perform the method in the first aspect or any possible implementation manner of the first aspect. In particular, the terminal device comprises means for performing the method of the first aspect described above or any possible implementation manner of the first aspect.
In a fourth aspect, there is provided a network device for performing the method of the second aspect or any possible implementation manner of the second aspect. In particular, the network device comprises means for performing the method of the second aspect described above or any possible implementation of the second aspect.
In a fifth aspect, a terminal device is provided, which includes: including a processor and memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.
In a sixth aspect, a network device is provided, which includes: including a processor and memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.
In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or its implementation manners.
Specifically, the chip includes: a processor configured to call and run a computer program from the memory, so that the device on which the chip is installed performs the method in any one of the first aspect to the second aspect or the implementation manners thereof.
In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to second aspects or implementations thereof.
In a ninth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.
A tenth aspect provides a computer program that, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.
Based on the technical scheme, the terminal equipment can register the core network according to the historical information of the network equipment configuration or the core network selection, thereby being beneficial to reducing the probability of the core network registration failure and improving the user experience.
Drawings
Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application.
Fig. 2 is a schematic diagram of a connection mode of SA and NAS networking.
Fig. 3 is a schematic flow chart of core network registration performed by a terminal device.
Fig. 4 is a schematic diagram of a method of wireless communication provided by an embodiment of the present application.
Fig. 5 is a schematic diagram of another method of wireless communication provided by an embodiment of the application.
Fig. 6 is a schematic block diagram of a terminal device according to an embodiment of the present application.
Fig. 7 is a schematic block diagram of a network device according to an embodiment of the present application.
Fig. 8 is a schematic block diagram of a communication device according to another embodiment of the present application.
Fig. 9 is a schematic block diagram of a chip provided in an embodiment of the present application.
Fig. 10 is a schematic block diagram of a communication system according to an embodiment of the present application.
Detailed Description
Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.
Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include an access network device 110, and the access network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Access network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Optionally, the Access Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Network device may be a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.
The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the access network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.
Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.
Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.
Optionally, in some scenarios, the communication system 100 may further include an access network device 130, and the access network device 130 may also provide a network service for the terminal device 120. For example, the access network device 120 and the access network device 130 may provide services for the terminal device through a multi-Connection (DC), and as an example, the access network device 120 may be a primary access network device and the access network device 130 may be a secondary access network device. Optionally, the communication system may further comprise more secondary access network devices. The terminal device may establish a connection with both the primary access network device and the secondary access network device. The connection established between the terminal equipment and the main access network equipment is a main connection, and the connection established between the terminal equipment and the auxiliary access network equipment is an auxiliary connection. The control signaling of the terminal device can be transmitted through the main connection, and the data of the terminal device can be transmitted simultaneously through the main connection and the auxiliary connection, or can be transmitted only through the auxiliary connection.
As an example, the Access Network device 120 may be an Access Network device of an LTE Network, such as an evolved-UMTS Terrestrial Radio Access Network (E-UTRAN), and the Access Network device 130 may be an Access Network device of an NR Network. As another example, the access network device 120 may be an access network device of an NR network, and the access network device 130 may be an access network device of an LTE network. Alternatively, the access network device 120 and the access network device 130 are both access network devices of an NR network, or both access network devices of an LTE network, and the like.
In other embodiments, the access network device 120 and the access network device 130 may also be access network devices in a 2G or 3G network, for example, the access network device 120 may be an access network device of a GSM network, an access network device of a CDMA network, and the like, and the access network device 130 may also be an access network device of a GSM network, an access network device of a CDMA network, and the like.
In some embodiments, the communication system may further include a Core network device 140, and the Core network device 140 may be, for example, a Core network of an LTE network, namely, an Evolved Packet Core (EPC), such as a Mobility Management Entity (MME), a Serving Gateway (SGW), and the like.
In some embodiments, the communication system may further include a Core Network device 150, and the Core Network device 150 may be, for example, a 5G Core Network (5GC), such as an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), a User Plane Function (UPF), and the like.
Fig. 1 exemplarily shows four network devices and one terminal device, and optionally, the communication system 100 may include more network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.
In some scenarios, the deployment of the network may include a stand-alone (SA) networking and a Non-stand-alone (NSA) networking, and fig. 2 illustrates a connection manner diagram of the SA networking and the NAS networking.
For the SA networking approach, as an example, a Next Generation Radio Access Network (NG-RAN) is connected to a core Network of a 5G Network, i.e. a 5GC, the NR-RAN may include, for example, an Access Network device of an E-UTRAN (i.e. an Access Network device of an LTE Network) and an NR Network, the E-UTRAN and the 5GC may communicate with each other through N2/N3 messages, and the NR and the 5GC may communicate with each other through N2/N3 messages. The terminal device may initiate a registration procedure with the 5GC using a N1 Non-Access Stratum (NAS) message.
In the SA network, a terminal device using a 5GC network may be referred to as N1UE, and the N1UE may transmit control information or data only through the E-UTRAN, or may transmit control information or data only through the NR access network, or may transmit control information or data through both the E-UTRAN and the NR access network.
For the NSA networking mode, as an example, the E-UTRAN may be connected to the EPC as a primary access network device (or anchor node), and the access network device of the NR network may be used as a secondary access network device to provide data transmission over the air interface, where the E-UTRAN and the EPC may communicate with each other through S1 messages, and the NR and the E-UTRAN may communicate with each other through an X2 interface. The terminal device may initiate a registration procedure with the EPC using the EPC NAS message.
In an NSA network, a terminal device using an EPC network may be referred to as an EPC UE, which may transmit control plane and user plane data only through an E-UTRAN or user plane data through an E-UTRAN and NR access network.
Optionally, in the SA network and the NSA network, the EPC and 5GC may also be connected to a Home Subscriber Server (HSS) and an integrated network element of Unified Data Management (UDM), that is, the integrated network element has functions of both the HSS and the UDM, and the integrated network element of the HSS and the UDM may be used to perform authentication Management on a user identity and store and manage authentication Data of a user.
For different operators, there are differences in network deployment, for example, in the initial stage of 5G network deployment, since different networks may support different services, for example, part of the services may not have support capability in the SA network, terminal devices still need to perform these services in the LTE network, for example, the 5G SA network may only support enhanced Mobile ultra wide band (eMBB) services, and for other services, for example, Cellular physical network (Cellular Internet of Things, CIoT), Vehicle to other Device (V2X), terminal to terminal (Device to Device, D2D) services, still need to perform under the EPC network.
When the area where the terminal device is located includes both SA and NSA networks, that is, the network device is covered by the 5GC and the EPC, the terminal device may initiate a registration procedure to the 5GC or an attach procedure to the EPC, but access failure may be caused by arbitrarily selecting an access core network. Fig. 3 is a schematic flow chart of a scenario in which a terminal device performs core network registration.
Step 21, the UE selects a core network for registration, for example, the terminal device selects to send a registration request to the 5 GC;
accordingly, the 5GC receives the registration request and determines that the terminal device is not allowed to use the 5 GC.
Further in step 22, the 5GC sends a registration request reject message including a specific cause value, e.g., the 5GC should not be used, to the UE.
In step 23, the UE initiates a registration request to another core network after receiving the specific cause value, for example, the terminal device may initiate a registration request to the EPC, and for the EPC network, the registration request may also be referred to as an attach request.
In step 24, the EPC sends an attach request reply message to the UE indicating that the UE successfully attaches to the EPC.
In other embodiments, the UE may also first select to initiate a registration request to the EPC, and after the registration fails, may further initiate a registration request to the 5GC, and if the registration succeeds, the terminal device may use the 5GC for communication.
The registration failure of the core network may cause multiple interactions, which brings unnecessary signaling overhead, increases the time for the UE to access the network, and affects the user experience.
In view of this, the embodiment of the present application provides a method for wireless communication, and a terminal device may perform registration of a core network according to historical information of network device configuration or core network selection, which is beneficial to reducing the probability of core network registration failure and improving user experience.
It should be understood that, in the embodiment of the present application, an application scenario of the technical solution is not limited, and the application scenario may be applied to a scenario where multiple networking modes coexist, where the multiple networking modes include, but are not limited to, the networking mode shown in fig. 2, or may also be applied to other scenarios where multiple core networks coexist and a core network needs to be selected, for example, a scenario where a core network is selected to establish a session connection, and the like.
It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include an access network device, a terminal device and a core network device having a communication function, and the access network device, the terminal device and the core network device may be the above-mentioned specific devices, which are not described herein again.
It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Fig. 4 is a schematic flow chart of a method for wireless communication according to an embodiment of the present application. The method 200 may be performed by a terminal device in the communication system shown in fig. 1, and as shown in fig. 4, the method 200 may include at least part of the following:
s210, the terminal equipment determines the preferred core network type according to first information or second information, wherein the first information is information configured by the network equipment and used for core network selection, and the second information is history information selected by the core network of the terminal equipment;
s220, the terminal equipment preferentially selects to initiate a registration process to the core network of the preferred core network type.
It should be understood that the embodiments of the present application may be applied to core network selection during core network registration, or may also be applied to other scenarios requiring core network selection, for example, a session establishment scenario, and it should be understood that session establishment in a 5G network may also be referred to as Protocol Data Unit (PDU) connection establishment, or PDU session establishment, and the like.
Therefore, in this embodiment of the present application, after determining the preferred core network type, the terminal device may preferably perform a subsequent NAS behavior with the core network of the preferred core network type, for example, may initiate a registration procedure to the core network of the preferred core network type, or may also initiate a session establishment procedure to the core network of the preferred core network type, and the following description takes a core network registration scenario as an example, but the present application is not limited thereto.
It should be understood that, in the embodiment of the present application, there may be multiple core network types, and the multiple core network types may include core networks of different networks, such as at least two of the following, a core network in an LTE network (i.e., EPC), a core network in an NR network (i.e., 5GC), a core network in a 2G or 3G network, a core network in an SA network (i.e., EPC), and a core network in an NSA network (5GC), which is not limited in this embodiment of the present application.
It should be noted that, in the embodiment of the present application, the EPC may be a core network in a single LTE network, or may be a core network in NSA, and the EPC may be connected to only an LTE base station, or the LTE base station and the NR base station may be connected to the EPC in a dual connection manner.
Optionally, in this embodiment of the present application, preferentially selecting to initiate a registration procedure to the core network of the preferred core network type may refer to preferentially selecting to initiate a registration procedure to the core network of the preferred core network type, and in a case that the registration to the core network of the preferred core network type fails, may select to initiate a registration procedure to a core network of another core network type. Alternatively, the preference for initiating the registration procedure to the core network of the preferred core network type may also mean that the registration procedure can be initiated only to the core network of the preferred core network type.
It should be noted that, in this embodiment of the application, the terminal device may also determine, according to the first information or the second information, a NAS message type that is preferably used for performing core network registration, and further, may preferably initiate a core network registration procedure using the NAS message type, and in a case of registration failure, may initiate a core network registration procedure using another NAS message type, and a manner of determining the NAS message type may refer to a specific implementation of determining the preferred core network type in the following description.
Hereinafter, the preferred core network type is determined in accordance with the specific embodiment.
Example 1: the terminal device may determine a preferred core network type among the plurality of core networks according to the first information configured by the network device.
Optionally, in some embodiments, the first information is used to indicate at least one of:
1. the core network type may be prioritized, or the core network type may be prioritized, that is, which core network type is preferentially used, or may be priority information of the core network type.
Taking an example that the core network type includes 5GC and EPC, the core network type may be prioritized from high to low, for example, 5GC and EPC may be shown to have higher priority than 5GC, and for example, EPC and 5GC may be shown to have higher priority than 5 GC; or may be arranged in a sequence from low to high, which is not described in detail herein.
As an example, the priority information of the core network type may be 5GC with a first priority and the EPC with a second priority, where the first priority may be higher than the second priority, or the first priority may be lower than the second priority;
2. the non-access stratum NAS message type usage prioritization, or NAS message type usage prioritization, i.e. which NAS message type is preferentially used, or also priority information of NAS message types.
Taking the NAS message type including the N1NAS message and the EPC NAS message as an example, the NAS message type may be prioritized from high to low, for example, the NAS message type may be an N1NAS message or an EPC NAS message, which indicates that the N1NAS message has higher priority than the EPC NAS message, or an EPC NAS message or an N1NAS message, which indicates that the EPC NAS message has higher priority than the N1NAS message; or may be arranged in a sequence from low to high, which is not described in detail herein.
As an example, the priority information of the NAS message type may be that the priority of the N1NAS message is a first priority, and the priority of the EPC NAS message is a second priority, where the first priority may be higher than the second priority, or the first priority may be lower than the second priority.
3. The priority ordering of the access SA network and the NSA network, or the priority ordering of the use of different networking modes, that is, which core network of the networking mode is preferentially used, or may also be priority information of the networking mode.
The priority ordering of the access SA network and the NSA network may be arranged in order from high to low, for example, the SA network and the NSA network may represent that the access SA network has higher priority than the NSA network, and for example, the NSA network and the SA network may also represent that the access NSA network has higher priority than the SA network; or may be arranged in a sequence from low to high, which is not described in detail herein.
As an example, the priority information of the networking manner may be that the priority of the SA network is a first priority, and the priority of the NSA network is a second priority, where the first priority may be higher than the second priority, or the first priority may be lower than the second priority.
4. A specific core network type, e.g., 5GC or EPC;
optionally, the specific core network type may be a core network type allowing the terminal device to register, or a core network type desired to be accessed by the terminal device, or a core network type that can only be accessed by the terminal device or that must be accessed by the terminal device,
5. a specific NAS message type, e.g., N1NAS or EPC NAS;
optionally, the specific NAS message type may be a NAS message type allowed to be used by the terminal device, a NAS message type expected to be used by the terminal device, or a NAS message type that can only be used or must be used by the terminal device, or the like.
6. A particular networking mode, such as SA or NSA.
Optionally, the specific networking mode may be a networking mode allowed to be used by the terminal device, a networking mode expected to be used by the terminal device, a networking mode capable of being used by the terminal device, a networking mode that can only be used by the terminal device or must be used by the terminal device, or the like.
It should be understood that, in the embodiment of the present application, the NAS message type may have a corresponding relationship with the core network type, for example, the core network type corresponding to the N1NAS message may be 5GC, and the core network type corresponding to the EPC NAS is EPC.
Optionally, in some embodiments, the network device determines the first information according to information such as a service condition supported by a core network, subscription information of a terminal device, service information supported by the terminal device, a current network congestion condition, and a number of users supported by the core network.
The following description will specifically describe an example of determining a preferred core network type from among the first core network type and the second core network type.
For example, if the terminal device has not subscribed to the first core network type and has subscribed to the second core network type, the first information may indicate that the priority of the second core network type is higher than that of the first core network type, or that the priority of the NAS message of the second core network type is higher than that of the NAS message of the first core network type.
For another example, if the terminal device supports a first service, the first core network type supports the first service, the second core network type does not support the first service, and the first information may indicate that the priority of the first core network type is higher than that of the second core network type, or that the priority of the NAS message type corresponding to the first core network type is higher than that of the NAS message type of the second core network type.
For another example, if the number of users supported by the first core network type is larger, and the number of users supported by the second core network type is smaller, that is, the first core network type supports access of more terminal devices, the first information may indicate that the priority of the first core network type is higher than that of the second core network type, or that the priority of the NAS message type corresponding to the first core network type is higher than that of the NAS message type corresponding to the second core network type.
As an embodiment, if the first information indicates the usage priority ranking of the core network types, the terminal device may determine the core network type with the highest priority as the preferred core network type according to the usage priority ranking of the core network types.
For example, if the first information indicates that the priority of the 5GC is higher than that of the EPC, the terminal device may determine that the 5GC is the target core network type.
As another embodiment, if the first information indicates the usage priority ranking of NAS message types, the terminal device may determine, according to the usage priority ranking of NAS message types, a core network type corresponding to a NAS message type with a highest priority as a preferred core network type.
For example, if the first information indicates that the N1NAS message has higher priority than the EPC NAS message, the terminal device may determine that the core network type corresponding to the N1NAS message is the preferred core network type. Or if the first information indicates that the N1NAS message has higher priority than the EPC NAS message, the terminal device may directly initiate a registration procedure to the 5GC using the N1NAS message.
As another embodiment, if the first information indicates priority ranking of the access SA network and the NAS network, the terminal device may determine the core network type corresponding to the networking mode with the highest priority as the preferred core network type.
For example, if the priority of accessing the SA network is higher than the priority of accessing the NSA network, the terminal device determines the core network type of the SA network as the preferred core network type; for another example, if the priority of accessing the SA network is lower than the priority of accessing the NSA network, the terminal device determines the core network type of the NSA network as the preferred core network type.
As another embodiment, if the first information indicates a core network type allowing the terminal device to register, the terminal device may determine the core network type allowing the terminal device to register as the preferred core network type.
As another embodiment, if the first information indicates a NAS message type allowed to be used by the terminal device, the terminal device may determine a core network type corresponding to the NAS message type allowed to be used by the terminal device as the preferred core network type. Or the terminal device may initiate the registration process directly using the NAS message type.
As another embodiment, if the first information indicates a networking mode that the terminal device is allowed to access, the terminal device may determine a core network type corresponding to the networking mode that the terminal device is allowed to access as a preferred core network type.
For example, if the terminal device is allowed to access the SA network, the terminal device may determine the core network type of the SA network as the preferred core network type; for another example, if the terminal device is allowed to access the NSA network, the terminal device determines the core network type of the NSA network as the preferred core network type.
The following describes a configuration of the first information with reference to a specific embodiment.
As an embodiment, the first information may be sent by a core network device, for example, the core network device may send the first information to a terminal device through a downlink NAS message. Specifically, the NAS of the terminal device may receive a NAS message sent by a NAS of a core network device, where the NAS message may include the first information.
Optionally, the core network device is a core network device registered by the terminal device. As an example, the core network device may be a core network device that is last registered by the terminal device.
For example, the core network device may send the first information to the terminal device in a terminal device registration process, where the registration process may be an initial registration process or a registration process caused by location update of the terminal device. For example, the core network device may carry the first information through a registration request reply message or a location update request reply message.
For another example, the core network device may send a first message to the terminal device after the terminal device successfully registers, in which case, the first message may be transmitted through any downlink NAS message.
As another embodiment, the first information may be sent by an access network device, for example, the access network device may send the first information to a terminal device through an RRC message or a broadcast message or other downlink message or downlink channel. Specifically, an Access Stratum (AS) of the terminal device may receive the first information sent by the AS of the Access network device.
Optionally, the access network device is an access network device where the terminal device resides. As an example, the access network device may be an access network device on which the terminal device last resided.
For example, the access network device may send the first information to the terminal device in a Radio Resource Control (RRC) connection establishment procedure, for example, the access network device may carry the first information through an RRC connection Setup (ConnectionSetup) message, and optionally, the RRC connection Setup message may also be referred to as an RRC Setup (Setup) message.
For another example, the access network device may send a first message to the terminal device after the RRC connection establishment is successful, in which case the first message may be transmitted through any downlink RRC message.
Further, after receiving the first information sent by the access network device, the AS of the terminal device may also send the first information to the NAS of the terminal device, and further, the NAS of the terminal device may determine the preferred core network type according to the first information, where the specific determination mode refers to the foregoing related description.
Example 2: the history information of the core network selection stored in the terminal device, that is, the second information, determines the preferred core network type among the plurality of core network types.
In some embodiments, the second information is used to indicate at least one of:
registering the successful core network type or the NAS message type corresponding to the core network type;
the number of successful registration times to the core network type with successful registration;
registering a failed core network type or an NAS message type corresponding to the core network type;
the core network type which fails to be registered for the first time but is successfully registered for the second time;
registering the number of times of failure to the core network type of which the registration fails;
registering the reason of the failure to the core network type of which the registration fails;
a networking type corresponding to the successfully registered core network type, such as an SA network or an NAS network;
and the networking type corresponding to the core network type with the registration failure.
Optionally, in some embodiments, if the terminal device first initiates a registration procedure with a core network of a first core network type, and if the registration fails, initiates a registration procedure with a core network of a second core network type, and if the registration succeeds, the core network type that failed in the first registration but succeeded in the second registration may be the second core network type, for example, for the example shown in fig. 3, if the terminal device failed in registering with the 5GC and then succeeded in registering with the EPC, the second information may include information of the EPC, or if the terminal device failed in registering with the EPC first and then succeeded in registering with the 5GC, the second information may include information of the 5 GC.
It should be noted that, here, the core network type that is successfully registered may include a core network type that is successfully registered in the SA network and the NAS network, that is, a core network type that is successfully registered in a scenario where multiple networking methods coexist, or a core network type that is successfully registered in a scenario where multiple networks coexist (different networks are independent), and similarly, the core network type that fails to be registered may also include a core network type that fails to be registered in a scenario where multiple networking methods coexist.
Specifically, after registering with the core network, the terminal device may store the registration result to obtain the second information, where the second information may include type information of the registered core network and the registration result of the core network type, that is, whether registration is successful or registration is failed, and optionally, may further include the number of times registration is successful or the number of times registration is failed, and the cause of registration failure, for example, may be that the UE cannot use the core network type.
Optionally, as an embodiment, if the second information indicates that the core network type successfully registered is the first core network type, the terminal device determines the first core network type as the preferred core network type.
Optionally, as another embodiment, if the number of times of successful registration to the first core network type indicated by the second information is greater than or equal to a first threshold, the terminal device determines the first core network type as the preferred core network type.
Optionally, as yet another embodiment, the terminal device may also determine a core network type that fails to be registered for the first time but succeeds to be registered again as the preferred core network type.
Further, in some embodiments, the terminal device may also update the second information according to a registration result, i.e., whether the registration is successful or failed, of the core network with the preferred core network type.
In this embodiment of the present application, if the preferred core network type is an evolved packet core EPC, the NAS of the terminal device may preferably initiate a registration request to the EPC using an EPC NAS message; or
If the preferred core network type is 5GC, the NAS of the terminal equipment preferably sends a registration request to the 5GC by using an N1NAS message.
In some embodiments, the terminal device initiating a registration request to the EPC using an EPC NAS message may trigger the terminal device to establish a connection only with an LTE base station, and in other embodiments, the terminal device initiating a registration request to the EPC using an EPC NAS message may trigger establishment of dual connectivity between the terminal device and LTE and NR base stations.
It should be understood that the foregoing embodiments 1 and 2 may be implemented separately, or may also be implemented in combination with the embodiments, for example, when the first information indicates that the EPC has a higher priority than 5GC, but the second information indicates that the number of times of registration failure of 5GC is higher, the terminal device may determine that the preferred core network type is EPC, and further may initiate a registration procedure with the EPC.
Therefore, according to the wireless communication method of the embodiment of the application, the terminal device can register the core network according to the network device configuration or the history information of the core network selection, which is beneficial to reducing the probability of the core network registration failure and improving the user experience.
The method of wireless communication according to an embodiment of the present application is described in detail above from the perspective of a terminal device in conjunction with fig. 4, and the method of wireless communication according to another embodiment of the present application is described in detail below from the perspective of a network device in conjunction with fig. 5. It should be understood that the description of the network device side and the description of the terminal device side correspond to each other, and similar descriptions may be referred to above, and are not repeated herein to avoid repetition.
Fig. 5 is a schematic flow chart of a method 300 of wireless communication according to another embodiment of the present application, the method 300 being executable by a network device in the communication system shown in fig. 1, as shown in fig. 5, the method 300 comprising the following:
s310, a network device sends first information to a terminal device, wherein the first information is used for the terminal device to determine a preferred core network type, and the first information is information configured by the network device and used for core network selection.
Optionally, in some embodiments, the first information is used to indicate at least one of:
the use priority of the core network type is sorted;
usage prioritization of non-access stratum NAS message types;
priority ordering of access independent SA networks and dependent NSA networks;
a core network type allowing the terminal device to register;
a NAS message type allowed to be used by the terminal device;
allowing access to either the SA network or the NSA network.
Optionally, in some embodiments, the network device is a core network device, and the sending, by the network device, the first information to the terminal device includes:
and the core network equipment sends an NAS message to the terminal equipment, wherein the NAS message comprises the first information.
Optionally, in some embodiments, the core network device is a core network device registered by the terminal device.
Optionally, in some embodiments, the NAS message is a registration request reply message or a location update request reply message.
Optionally, in some embodiments, the network device is an access network device, and the network device sends first information to the terminal device, where the first information includes:
and the access network equipment sends the first information to the terminal equipment.
Optionally, in some embodiments, the access network device is an access network device where the terminal device resides.
Optionally, in some embodiments, the first information is included in a radio resource control, RRC, message or a broadcast message.
While method embodiments of the present application are described in detail above with reference to fig. 4-5, apparatus embodiments of the present application are described in detail below with reference to fig. 6-10, it being understood that apparatus embodiments correspond to method embodiments and that similar descriptions may be had with reference to method embodiments.
Fig. 6 shows a schematic block diagram of a terminal device 400 according to an embodiment of the application. As shown in fig. 6, the terminal apparatus 400 includes:
a processing module 410, configured to determine a preferred core network type according to first information or second information, where the first information is information configured by a network device and used for core network selection, and the second information is history information selected by a core network of the terminal device;
a communication module 420, configured to preferentially select to initiate a registration procedure with a core network of the preferred core network type.
Optionally, in some embodiments, the first information is used to indicate at least one of:
the use priority of the core network type is sorted;
usage prioritization of non-access stratum NAS message types;
priority ordering of access independent SA networks and dependent NSA networks;
a core network type allowing the terminal device to register;
a NAS message type allowed to be used by the terminal device;
allowing access to either the SA network or the NSA network.
Optionally, in some embodiments, the processing module 410 is specifically configured to:
and determining the core network type with the highest priority as the preferred core network type according to the use priority sequence of the core network types.
Optionally, in some embodiments, the processing module 410 is specifically configured to:
and determining the core network type corresponding to the NAS message type with the highest priority as the preferred core network type according to the use priority sequence of the NAS message types.
Optionally, in some embodiments, the processing module 410 is specifically configured to:
if the priority of the SA network is higher than that of the NSA network, determining the core network type of the SA network as the preferred core network type; or
And if the priority of accessing the SA network is lower than that of accessing the NSA network, determining the core network type of the NSA network as the preferred core network type.
Optionally, in some embodiments, the processing module 410 is specifically configured to:
and determining the core network type allowing the terminal equipment to be registered as the preferred core network type.
Optionally, in some embodiments, the processing module 410 is specifically configured to:
and determining the core network type corresponding to the NAS message type allowed to be used by the terminal equipment as the preferred core network type.
Optionally, in some embodiments, the processing module 410 is specifically configured to:
if the access to the SA network is allowed, determining the core network type of the SA network as the preferred core network type; or
And if the NSA network is allowed to be accessed, determining the core network type of the NSA network as the preferred core network type.
Optionally, in some embodiments, the communication module 420 is further configured to:
and receiving, at the NAS, a NAS message sent by a NAS of the core network device, where the NAS message includes the first information.
Optionally, in some embodiments, the core network device is a core network device registered by the terminal device.
Optionally, in some embodiments, the NAS message is a registration request reply message or a location update request reply message.
Optionally, in some embodiments, the communication module 420 is specifically configured to:
and receiving first information sent by the AS of the access network equipment at the access layer AS.
Optionally, in some embodiments, the access network device is an access network device where the terminal device resides.
Optionally, in some embodiments, the first information is included in a radio resource control, RRC, message or a broadcast message.
Optionally, in some embodiments, the processing module 410 is further configured to:
and sending the first information to the NAS of the terminal equipment at the AS, wherein the first information is used for determining the preferred core network type by the NAS of the terminal equipment.
Optionally, in some embodiments, the second information is used to indicate at least one of:
registering the successful core network type or the NAS message type corresponding to the core network type;
the number of successful registration times to the core network type with successful registration;
registering a failed core network type or an NAS message type corresponding to the core network type;
the core network type which fails to be registered for the first time but is successfully registered for the second time;
and registering the number of times of failure to the core network type with which the registration fails.
Optionally, in some embodiments, the processing module 410 is specifically configured to:
if the second information indicates that the successfully registered core network type is the first core network type, determining the first core network type as the preferred core network type; or
And if the second information indicates that the number of times of successful registration to the first core network type is greater than or equal to a first threshold value, determining the first core network type as the preferred core network.
Optionally, in some embodiments, the processing module 410 is further configured to:
and updating the second information according to whether the target core network type is successfully registered.
Optionally, in some embodiments, the communication module 410 is further configured to:
if the target core network type is a packet core Evolution (EPC), preferably using an EPC NAS message to initiate a registration request to the EPC; or
If the target core network is a 5G core network 5GC, a registration request is preferably sent to the 5GC using an N1NAS message.
It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to a terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing a corresponding flow of the terminal device in the method 200 shown in fig. 2, and are not described herein again for brevity.
Fig. 7 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of fig. 7 includes:
a communication module 510, configured to send first information to a terminal device, where the first information is used by the terminal device to determine a preferred core network type, and the first information is information configured by a network device and used for core network selection.
Optionally, in some embodiments, the first information is used to indicate at least one of:
the use priority of the core network type is sorted;
usage prioritization of non-access stratum NAS message types;
priority ordering of access independent SA networks and dependent NSA networks;
a core network type allowing the terminal device to register;
a NAS message type allowed to be used by the terminal device;
allowing access to either the SA network or the NSA network.
Optionally, the network device is a core network device, and the communication module 510 is specifically configured to: and sending an NAS message to the NAS of the terminal equipment in the NAS, wherein the NAS message comprises the first information.
Optionally, in some embodiments, the core network device is a core network device registered by the terminal device.
Optionally, in some embodiments, the NAS message is a registration request reply message or a location update request reply message.
Optionally, in some embodiments, the network device is an access network device, and the communication module 510 is specifically configured to: and sending the first information to the AS of the terminal equipment at the AS.
Optionally, in some embodiments, the access network device is an access network device where the terminal device resides.
Optionally, in some embodiments, the first information is included in a radio resource control, RRC, message or a broadcast message.
It should be understood that the network device 500 according to the embodiment of the present application may correspond to a terminal device in the embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the network device 500 are respectively for implementing corresponding flows of the network device in the method 300 shown in fig. 5, and are not described herein again for brevity.
Fig. 8 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 shown in fig. 8 includes a processor 610, and the processor 610 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 8, the communication device 600 may further include a memory 620. From the memory 620, the processor 610 may call and run a computer program to implement the method in the embodiment of the present application.
The memory 620 may be a separate device from the processor 610, or may be integrated into the processor 610.
Optionally, as shown in fig. 8, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.
The transceiver 630 may include a transmitter and a receiver, among others. The transceiver 630 may further include one or more antennas.
Optionally, the communication device 600 may specifically be a network device in the embodiment of the present application, and the communication device 600 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the communication device 600 may specifically be a mobile terminal/terminal device in this embodiment, and the communication device 600 may implement a corresponding process implemented by the mobile terminal/terminal device in each method in this embodiment, which is not described herein again for brevity.
Fig. 9 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 9 includes a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.
Optionally, as shown in fig. 9, the chip 700 may further include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.
The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.
Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.
Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.
Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.
Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.
Fig. 10 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 10, the communication system 900 includes a terminal device 910 and a network device 920.
The terminal device 910 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 920 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, which is not described herein again.
It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.
It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
The embodiment of the application also provides a computer readable storage medium for storing the computer program.
Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.
Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.
Embodiments of the present application also provide a computer program product comprising computer program instructions.
Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.
Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.
The embodiment of the application also provides a computer program.
Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.
Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (59)

  1. A method of wireless communication, comprising:
    the method comprises the steps that a terminal device determines a preferred core network type according to first information or second information, wherein the first information is information which is configured by a network device and used for core network selection, and the second information is historical information selected by a core network of the terminal device;
    and the terminal equipment preferentially selects to initiate a registration process to the core network of the preferred core network type.
  2. The method of claim 1, wherein the first information is used to indicate at least one of:
    the use priority of the core network type is sorted;
    usage prioritization of non-access stratum NAS message types;
    priority ordering of access independent SA networks and dependent NSA networks;
    a core network type allowing the terminal device to register;
    a NAS message type allowed to be used by the terminal device;
    allowing access to either the SA network or the NSA network.
  3. The method of claim 2, wherein the determining, by the terminal device, the preferred core network type according to the first information or the second information comprises:
    and the terminal equipment determines the core network type with the highest priority as the preferred core network type according to the use priority sequence of the core network types.
  4. The method of claim 2, wherein the determining, by the terminal device, the preferred core network type according to the first information or the second information comprises:
    and the terminal equipment determines the core network type corresponding to the NAS message type with the highest priority as the preferred core network type according to the use priority sequence of the NAS message types.
  5. The method of claim 2, wherein the determining, by the terminal device, the preferred core network type according to the first information or the second information comprises:
    if the priority of accessing the SA network is higher than the priority of accessing the NSA network, the terminal equipment determines the core network type of the SA network as the preferred core network type; or
    And if the priority of accessing the SA network is lower than the priority of accessing the NSA network, the terminal equipment determines the core network type of the NSA network as the preferred core network type.
  6. The method of claim 2, wherein the determining, by the terminal device, the preferred core network type according to the first information or the second information comprises:
    and the terminal equipment determines the core network type allowing the terminal equipment to register as the preferred core network type.
  7. The method of claim 2, wherein the determining, by the terminal device, the preferred core network type according to the first information or the second information comprises:
    and the terminal equipment determines the core network type corresponding to the NAS message type allowed to be used by the terminal equipment as the preferred core network type.
  8. The method of claim 2, wherein the determining, by the terminal device, the preferred core network type according to the first information or the second information comprises:
    if the terminal equipment is allowed to access the SA network, the terminal equipment determines the core network type of the SA network as the preferred core network type; or
    And if the terminal equipment is allowed to access the NSA network, the terminal equipment determines the core network type of the NSA network as the preferred core network type.
  9. The method according to any one of claims 1 to 8, further comprising:
    and the terminal equipment receives an NAS message sent by core network equipment, wherein the NAS message comprises the first information.
  10. The method according to claim 9, wherein the core network device is a core network device registered by the terminal device.
  11. The method according to claim 9 or 10, wherein the NAS message is a registration request reply message or a location update request reply message.
  12. The method according to any one of claims 1 to 8, further comprising:
    the terminal equipment receives first information sent by the access network equipment.
  13. The method of claim 12, wherein the access network device is an access network device on which the terminal device resides.
  14. The method according to claim 12 or 13, wherein the first information is included in a radio resource control, RRC, message or a broadcast message.
  15. The method according to any of claims 1 to 14, wherein the second information is used to indicate at least one of:
    registering the successful core network type or the NAS message type corresponding to the core network type;
    the number of successful registration times to the core network type with successful registration;
    registering a failed core network type or an NAS message type corresponding to the core network type;
    the core network type which fails to be registered for the first time but is successfully registered for the second time;
    and registering the number of times of failure to the core network type with which the registration fails.
  16. The method of claim 15, wherein the determining, by the terminal device, the preferred core network type according to the first information or the second information comprises:
    if the second information indicates that the core network type successfully registered is the first core network type, the terminal device determines the first core network type as the preferred core network type; or
    If the second information indicates that the number of times of successful registration to the first core network type is greater than or equal to a first threshold value, the terminal device determines the first core network type as the preferred core network.
  17. The method according to any one of claims 1 to 16, further comprising:
    and updating the second information according to whether the target core network type is successfully registered.
  18. The method according to any of claims 1 to 17, wherein the terminal device preferentially selects to initiate a registration procedure with the core network of the preferred core network type, comprising:
    if the target core network type is a packet core Evolution (EPC), the terminal equipment preferably uses an EPC NAS message to initiate a registration request to the EPC; or
    If the target core network is a 5G core network 5GC, the terminal device preferably sends a registration request to the 5GC using an N1NAS message.
  19. A method of wireless communication, comprising:
    the method comprises the steps that network equipment sends first information to terminal equipment, the first information is used for the terminal equipment to determine the preferred core network type, and the first information is information which is configured by the network equipment and used for core network selection.
  20. The method of claim 19, wherein the first information is used to indicate at least one of:
    the use priority of the core network type is sorted;
    usage prioritization of non-access stratum NAS message types;
    priority ordering of access independent SA networks and dependent NSA networks;
    a core network type allowing the terminal device to register;
    a NAS message type allowed to be used by the terminal device;
    allowing access to either the SA network or the NSA network.
  21. The method according to claim 19 or 20, wherein the network device is a core network device, and the network device sends first information to a terminal device, including:
    and the core network equipment sends an NAS message to the terminal equipment, wherein the NAS message comprises the first information.
  22. The method of claim 21, wherein the core network device is a core network device registered by the terminal device.
  23. The method according to claim 21 or 22, wherein the NAS message is a registration request reply message or a location update request reply message.
  24. The method according to claim 19 or 20, wherein the network device is an access network device, and the network device sends first information to a terminal device, including:
    and the access network equipment sends the first information to the terminal equipment.
  25. The method of claim 24, wherein the access network device is an access network device on which the terminal device resides.
  26. The method according to claim 24 or 25, wherein the first information is included in a radio resource control, RRC, message or a broadcast message.
  27. A terminal device, comprising:
    a processing module, configured to determine a preferred core network type according to first information or second information, where the first information is information configured by a network device and used for core network selection, and the second information is history information selected by a core network of the terminal device;
    and the communication module is used for preferentially selecting to initiate a registration process to the core network of the preferred core network type.
  28. The terminal device of claim 27, wherein the first information is used for indicating at least one of the following:
    the use priority of the core network type is sorted;
    usage prioritization of non-access stratum NAS message types;
    priority ordering of access independent SA networks and dependent NSA networks;
    a core network type allowing the terminal device to register;
    a NAS message type allowed to be used by the terminal device;
    allowing access to either the SA network or the NSA network.
  29. The terminal device of claim 28, wherein the processing module is specifically configured to:
    and determining the core network type with the highest priority as the preferred core network type according to the use priority sequence of the core network types.
  30. The terminal device of claim 28, wherein the processing module is specifically configured to:
    and determining the core network type corresponding to the NAS message type with the highest priority as the preferred core network type according to the use priority sequence of the NAS message types.
  31. The terminal device of claim 28, wherein the processing module is specifically configured to:
    if the priority of the SA network is higher than that of the NSA network, determining the core network type of the SA network as the preferred core network type; or
    And if the priority of accessing the SA network is lower than that of accessing the NSA network, determining the core network type of the NSA network as the preferred core network type.
  32. The terminal device of claim 28, wherein the processing module is specifically configured to:
    and determining the core network type allowing the terminal equipment to be registered as the preferred core network type.
  33. The terminal device of claim 28, wherein the processing module is specifically configured to:
    and determining the core network type corresponding to the NAS message type allowed to be used by the terminal equipment as the preferred core network type.
  34. The terminal device of claim 28, wherein the processing module is specifically configured to:
    if the access to the SA network is allowed, determining the core network type of the SA network as the preferred core network type; or
    And if the NSA network is allowed to be accessed, determining the core network type of the NSA network as the preferred core network type.
  35. The terminal device of any one of claims 27 to 34, wherein the communication module is further configured to:
    and receiving, at the NAS, a NAS message sent by a NAS of the core network device, where the NAS message includes the first information.
  36. The terminal device according to claim 35, wherein the core network device is a core network device registered by the terminal device.
  37. A terminal device according to claim 35 or 36, wherein the NAS message is a registration request reply message or a location update request reply message.
  38. The terminal device according to any one of claims 27 to 34, wherein the communication module is specifically configured to:
    and receiving first information sent by the AS of the access network equipment at the access layer AS.
  39. The terminal device of claim 38, wherein the access network device is an access network device on which the terminal device resides.
  40. A terminal device according to claim 38 or 39, wherein the first information is contained in a radio resource control, RRC, message or a broadcast message.
  41. The terminal device of any one of claims 38 to 40, wherein the processing module is further configured to:
    and sending the first information to the NAS of the terminal equipment at the AS, wherein the first information is used for determining the preferred core network type by the NAS of the terminal equipment.
  42. The terminal device according to any of claims 27 to 41, wherein the second information is used to indicate at least one of:
    registering the successful core network type or the NAS message type corresponding to the core network type;
    the number of successful registration times to the core network type with successful registration;
    registering a failed core network type or an NAS message type corresponding to the core network type;
    the core network type which fails to be registered for the first time but is successfully registered for the second time;
    and registering the number of times of failure to the core network type with which the registration fails.
  43. The terminal device of claim 42, wherein the processing module is specifically configured to:
    if the second information indicates that the successfully registered core network type is the first core network type, determining the first core network type as the preferred core network type; or
    And if the second information indicates that the number of times of successful registration to the first core network type is greater than or equal to a first threshold value, determining the first core network type as the preferred core network.
  44. The terminal device of any one of claims 27 to 43, wherein the processing module is further configured to:
    and updating the second information according to whether the target core network type is successfully registered.
  45. The terminal device of any one of claims 27 to 44, wherein the communication module is further configured to:
    if the target core network type is a packet core Evolution (EPC), preferably using an EPC NAS message to initiate a registration request to the EPC; or
    If the target core network is a 5G core network 5GC, a registration request is preferably sent to the 5GC using an N1NAS message.
  46. A network device, comprising:
    the communication module is used for sending first information to the terminal equipment, wherein the first information is used for the terminal equipment to determine the preferred core network type, and the first information is information which is configured by the network equipment and is used for selecting the core network.
  47. The network device of claim 46, wherein the first information is configured to indicate at least one of:
    the use priority of the core network type is sorted;
    usage prioritization of non-access stratum NAS message types;
    priority ordering of access independent SA networks and dependent NSA networks;
    a core network type allowing the terminal device to register;
    a NAS message type allowed to be used by the terminal device;
    allowing access to either the SA network or the NSA network.
  48. The network device according to claim 46 or 47, wherein the network device is a core network device, and the communication module is specifically configured to:
    and sending an NAS message to the NAS of the terminal equipment in the NAS, wherein the NAS message comprises the first information.
  49. The network device of claim 48, wherein the core network device is a core network device registered by the terminal device.
  50. The network device of claim 48 or 49, wherein the NAS message is a registration request reply message or a location update request reply message.
  51. The network device according to claim 46 or 47, wherein the network device is an access network device, and the communication module is specifically configured to:
    and sending the first information to the AS of the terminal equipment at the AS.
  52. The network device of claim 51, wherein the access network device is an access network device on which the terminal device resides.
  53. The network device of claim 51 or 52, wherein the first information is included in a Radio Resource Control (RRC) message or a broadcast message.
  54. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 18.
  55. A network device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 19 to 26.
  56. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any of claims 1 to 18, or the method of any of claims 19 to 26.
  57. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 18 or the method of any one of claims 19 to 26.
  58. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 18 or the method of any one of claims 19 to 26.
  59. A computer program, characterized in that the computer program causes a computer to perform the method of any of claims 1 to 18, or the method of any of claims 19 to 26.
CN201980094203.2A 2019-08-02 2019-08-02 Wireless communication method, terminal equipment and network equipment Pending CN113574936A (en)

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CN116567778A (en) * 2022-01-29 2023-08-08 维沃移动通信有限公司 PIN construction method and device

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WO2019047117A1 (en) * 2017-09-07 2019-03-14 Oppo广东移动通信有限公司 Network access method, terminal device and network device

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