TW202007199A - Core network selection method and apparatus, terminal device and network device - Google Patents

Abstract

Disclosed in the present application are a core network selection method and apparatus, a terminal device, and a network device, the method comprising: a terminal sending a first connection request message to an access network, the first connection request message carrying at least one of the following: a first manner of transmission corresponding to target data requiring transmission, first UE identification information allocated by a network for the terminal, and first core network information. Thus, on the basis of information carried in the first connection request message, the access network selects a core network to which the terminal must connect.

Description

Core network selection method and device, terminal equipment, network equipment

The present application relates to the field of wireless communication technology, in particular to a core network selection method and device, terminal equipment, and network equipment.

In the future network, a large number of Internet of Things (IoT, Internet Of Things) devices will exist in the network. When IoT devices send small data, they can encapsulate the small data through a non-access stratum (NAS, Non-access stratum) protocol data unit (PDU, Protocol Data Unit) to send. This method is called the control plane data transmission method. Another way to send small data is to use an optimized user plane data transmission method. In this mode, the terminal implements fast state transition to realize the user plane small data transmission to save signaling overhead. The rapid state transition is achieved through the network and the terminal maintaining the terminal context in a specific state.

Because the network and the terminal support the control plane and the user plane in an optional manner, the terminal cannot select the core network properly when selecting the network or the access network when selecting the core network.

To solve the above technical problems, the embodiments of the present application provide a core network selection method and device, terminal equipment, and network equipment.

The core network selection method provided in the embodiments of the present application includes: The terminal sends a first connection request message to the access network, where the first connection request message carries at least one of the following: a first transmission mode corresponding to the target data to be transmitted, and a first UE identifier assigned by the network to the terminal Information, first core network information, so that the access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message.

In an embodiment, the method further includes:

Before sending the first connection request message to the access network, the terminal determines a core network or a core network set to be connected;

Wherein, the first UE identification information allocated by the network to the terminal refers to the first UE identification information allocated to the terminal by the core network or core network set.

In an embodiment, the determination of the core network or core network set to be connected includes:

The terminal determines the core network or core network set to be connected according to whether the at least one core network supports the capability information of the first transmission mode.

In an embodiment, the terminal obtains the capability information of whether the at least one core network supports the first transmission mode through non-access layer signaling or access layer signaling.

In an embodiment, the method further includes:

Before sending the first connection request message to the access network, the terminal obtains capability information of whether the access network supports the first transmission method;

When the access network supports the capability information of the first transmission method, the first connection request message is sent to the access network.

In an embodiment, the acquiring capability information of whether the access network supports the first transmission method includes:

The terminal obtains the capability information of whether the access network supports the first transmission mode through a system message or dedicated signaling sent by the access network; or,

The terminal obtains the capability information of whether the access network supports the first transmission mode through a community identifier corresponding to the access network.

In an embodiment, if the first connection request message does not carry the first core network information or the access network selects a core based on the first core network information carried in the first connection request message If the network fails, the access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method.

In one embodiment, the access network determines the core network or core supporting the first transmission method based on the first configuration information or control signaling or user plane signaling between the access network and the core network Net collection.

In one embodiment, if the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends to the terminal The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected.

In one embodiment, the access network rejects or releases the connection of the terminal.

In one embodiment, the access network receives a second notification message sent from the core network. The second notification message includes core network information and/or PLMN information supported by the core network. The access network will The information in the second notification message notifies the terminal or the access network to redirect the terminal to the corresponding frequency or RAT according to the information in the second notification message.

In an embodiment, the terminal selects the corresponding core network information and/or publicly moves on the corresponding frequency point or radio access type (RAT) according to the information in the second notification message PLMN (Public Land Mobile Network) information.

In one embodiment, the first transmission method includes a control plane data transmission method, or a user plane data transmission method.

In one embodiment, the access network side and the core network side determine the transmission mode that they each start based on the capability information of the terminal.

The core network selection method provided in the embodiments of the present application includes:

The access network receives the first connection request message sent by the terminal, where the first connection request message carries at least one of the following: a first transmission mode corresponding to the target data to be transmitted, and a first UE allocated by the network to the terminal Logo information, first core network information;

The access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message.

In an embodiment, the method further includes:

If the first connection request message does not carry the first core network information or the access network fails to select a core network based on the first core network information carried in the first connection request message, then The access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method.

In an embodiment, the method further includes:

The access network determines the core network or core network set that supports the first transmission method based on the first configuration information or control signaling or user plane signaling between the access network and the core network.

In an embodiment, the method further includes:

If the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends a first notification message to the terminal, so The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected.

In an embodiment, the method further includes:

The access network rejects or releases the connection of the terminal.

In an embodiment, the method further includes:

The access network receives a second notification message sent from the core network, the second notification message includes core network information and/or PLMN information supported by the core network, and the access network sends the second notification message The information in is notified to the terminal or the access network to redirect the terminal to the corresponding frequency or RAT according to the information in the second notification message.

In one embodiment, the first transmission method includes a control plane data transmission method, or a user plane data transmission method.

In one embodiment, the access network side and the core network side determine the transmission mode that they each start based on the capability information of the terminal.

The core network selection device provided by the embodiment of the present application includes:

The sending unit is configured to send a first connection request message to the access network, where the first connection request message carries at least one of the following: a first transmission method corresponding to the target data to be transmitted, and a network allocated to the terminal The first UE identification information and the first core network information, so that the access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message.

In an embodiment, the device further includes:

The determining unit is used to determine the core network or core network set to be connected;

Wherein, the first UE identification information allocated by the network to the terminal refers to the first UE identification information allocated to the terminal by the core network or core network set.

In an embodiment, the determining unit is configured to determine the core network or core network set to be connected according to whether the at least one core network supports the capability information of the first transmission mode.

In an embodiment, the device further includes:

The first obtaining unit is configured to obtain the capability information of whether the at least one core network supports the first transmission mode through non-access layer signaling or access layer signaling.

In an embodiment, the device further includes:

A second acquiring unit, configured to acquire capability information of whether the access network supports the first transmission method;

The sending unit is configured to send the first connection request message to the access network when the access network supports capability information of the first transmission method.

In an embodiment, the second acquiring unit is configured to acquire, through system messages or dedicated signaling sent by the access network, whether the access network supports capability information of the first transmission mode; or, The community identifier corresponding to the access network obtains the capability information of whether the access network supports the first transmission method.

In an embodiment, if the first connection request message does not carry the first core network information or the access network selects a core based on the first core network information carried in the first connection request message If the network fails, the access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method.

In one embodiment, the access network determines the core network or core supporting the first transmission method based on the first configuration information or control signaling or user plane signaling between the access network and the core network Net collection.

In one embodiment, if the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends to the terminal The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected.

In one embodiment, the access network rejects or releases the connection of the terminal.

In one embodiment, the access network receives a second notification message sent from the core network. The second notification message includes core network information and/or PLMN information supported by the core network. The access network will The information in the second notification message notifies the terminal or the access network to redirect the terminal to the corresponding frequency or RAT according to the information in the second notification message.

In an embodiment, the device further includes:

The selection unit is configured to select corresponding core network information and/or PLMN information on the corresponding frequency point or RAT according to the information in the second notification message.

In one embodiment, the first transmission method includes a control plane data transmission method, or a user plane data transmission method.

In one embodiment, the access network side and the core network side determine the transmission mode that they each start based on the capability information of the terminal.

The core network selection device provided by the embodiment of the present application includes:

The first receiving unit is configured to receive a first connection request message sent by a terminal, where the first connection request message carries at least one of the following: a first transmission method corresponding to target data to be transmitted, and a network to allocate to the terminal The first UE identification information and the first core network information;

The selection unit is configured to select the core network to which the terminal needs to connect based on the information carried in the first connection request message.

In an embodiment, if the first connection request message does not carry the first core network information or the access network selects a core based on the first core network information carried in the first connection request message If the network fails, the selection unit selects the core network to be connected by the terminal from the core network or core network set supporting the first transmission method.

In an embodiment, the device further includes:

The determining unit is configured to determine the core network or core network set supporting the first transmission method based on the first configuration information or control signaling or user plane signaling between the access network and the core network.

In an embodiment, the device includes:

A notification unit, configured to send a first notification message to the terminal if the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission method The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected.

In an embodiment, the device further includes:

The response unit is used to refuse or release the connection of the terminal.

In an embodiment, the device further includes:

A second receiving unit, configured to receive a second notification message sent from the core network, where the second notification message includes core network information and/or PLMN information supported by the core network;

A notification unit, configured to notify the terminal of the information in the second notification message or the access network to redirect the terminal to a corresponding frequency or RAT according to the information in the second notification message .

In one embodiment, the first transmission method includes a control plane data transmission method, or a user plane data transmission method.

In one embodiment, the access network side and the core network side determine the transmission mode that they each start based on the capability information of the terminal.

The terminal device provided by the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to perform the core network selection method described above.

The network device provided by the embodiment of the present application includes a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory to perform the core network selection method described above.

The wafer provided by the embodiment of the present application is used to implement the above core network selection method.

Specifically, the chip includes a processor for calling and running a computer program from the memory, so that the device installed with the chip executes the core network selection method described above.

The computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables the computer to execute the core network selection method described above.

The computer program product provided by the embodiment of the present application includes computer program instructions, and the computer program instructions enable the computer to execute the core network selection method described above.

When the computer program provided by the embodiment of the present application runs on the computer, the computer program causes the computer to execute the core network selection method described above.

Through the above technical solutions of the embodiments of the present application, when the terminal selects the network or the access network selects the core network, it can effectively select a suitable core network to connect, reducing the probability of failure to connect to the core network, and effectively protecting small data according to Characteristic transmission method for transmission.

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, and Broadband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Global Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in FIG. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be a base transceiver station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or a Node B (NodeB, NB) in a WCDMA system, or an LTE system Evolutionary Node B (eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, Access points, in-vehicle devices, wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or networks in the future evolution of public land mobile networks (PLMN) Equipment etc.

The communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connection via wired lines, such as via Public Switched Telephone Networks (Public Switched Telephone Networks, PSTN), digital subscriber line (DSL), digital cables, direct cables Connection; and/or another data connection/network; and/or via a wireless interface, eg, for mobile networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks , Satellite network, AM-FM broadcast transmitter; and/or another terminal device set to receive/transmit communication signals; and/or Internet of Things (IoT) equipment. Terminal devices configured to communicate through a wireless interface may be referred to as "wireless communication terminals", "wireless terminals", or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or mobile phones; Personal Communications System (PCS) terminals that can combine mobile radiotelephones with data processing, facsimile, and data communication capabilities; can include radio phones, pagers, and Internet /Intranet access, Web browser, notepad, calendar, and/or PDA with Global Positioning System (GPS) receiver; and conventional laptop and/or palm-type receiver or including radio telephone transceiver Other electronic devices. Terminal equipment can refer to access terminal, user equipment (User Equipment, UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication equipment, user agent or user device. The access terminal may be a mobile phone, a wireless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or a wireless communication function Handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in future PLMNs, etc.

Optionally, terminal-to-device (Device to Device, D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This is not limited in the embodiments of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobile management entity, which is not limited in the embodiments of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function. The network device 110 and the terminal device 120 may be the specific devices described above. It will be described again; the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiments of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone. three situations. In addition, the character “/” in this article generally indicates that the related objects are a “or” relationship.

FIG. 2 is a schematic flowchart 1 of a core network selection method according to an embodiment of the present application. As shown in FIG. 2, the core network selection method includes the following steps:

Step 201: The terminal sends a first connection request message to the access network, where the first connection request message carries at least one of the following: the first transmission method corresponding to the target data to be transmitted, and the first UE identification information and first core network information, so that the access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message.

In the embodiment of the present application, the terminal may be, but not limited to, an IoT device.

In the embodiment of the present application, the access network may be any type of access network, such as an LTE access network, an NR access network, and so on.

In the embodiment of the present application, the information carried in the first connection request message sent by the terminal to the access network has the following two situations:

Case 1: The first connection request message carries the first transmission mode corresponding to the target data to be transmitted.

In this case, the access network selects the core network to which the terminal needs to connect based on the first transmission method and auxiliary information.

Case 2: The first connection request message carries the first transmission mode corresponding to the target data to be transmitted, the first UE identification information and/or the first core network information.

In this case, the access network selects the core network to which the terminal needs to connect based on the first transmission method, the first UE identification information, and/or the first core network information.

In the above solution, the first UE identity information is, for example, 5G-S-TMSI, and the first core network information is, for example, a globally unique AMF identity (GUAMI).

In the embodiment of the present application, before sending the first connection request message to the access network, the terminal determines the core network or core network set to be connected; the terminal selects the 5G-S allocated by the core network or core network set -TMSI, that is, the first UE identification information allocated by the network to the terminal refers to the first UE identification information allocated to the terminal by the core network or core network set.

In an embodiment, the terminal determines a core network or a collection of core networks to be connected in the following manner: the terminal determines the core to be connected according to whether at least one core network supports the capability information of the first transmission mode Network or core network collection. Further, the terminal obtains the capability information of whether the at least one core network supports the first transmission mode through non-access layer signaling or access layer signaling.

In the embodiment of the present application, before sending the first connection request message to the access network, the terminal obtains capability information of whether the access network supports the first transmission method; the access network supports the When the capability information of the first transmission method is described, the first connection request message is sent to the access network.

In one embodiment, the terminal obtains the capability information of whether the access network supports the first transmission mode by: 1) acquiring the system message or dedicated signaling sent by the terminal through the access network Whether the access network supports the capability information of the first transmission method; or, 2) the terminal obtains whether the access network supports the capability of the first transmission method through a community identifier corresponding to the access network News.

For case 1 or case 2 above, if the first connection request message does not carry the first core network information or the access network is based on the first core carried in the first connection request message If the network information fails to select the core network, the access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method.

Here, the access network determines the core network or core network set supporting the first transmission method based on the first configuration information or control signaling or user plane signaling between the access network and the core network.

In one embodiment, if the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends to the terminal The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected. Optionally, the access network rejects or releases the connection of the terminal.

In one embodiment, the access network receives a second notification message sent from the core network. The second notification message includes core network information and/or PLMN information supported by the core network. The access network will The information in the second notification message notifies the terminal or the access network to redirect the terminal to the corresponding frequency or RAT according to the information in the second notification message. Correspondingly, the terminal selects the corresponding core network information and/or PLMN information on the corresponding frequency point or RAT according to the information in the second notification message.

In the above solution of the embodiment of the present application, the first transmission method includes a method of transmitting data by using a control plane (for example, a method of encapsulating small data by NAS PDU) or a method of transmitting data by a user plane.

In the above solution of the embodiment of the present application, the access network side and the core network side determine the transmission mode that they each start based on the capability information of the terminal.

FIG. 3 is a second schematic flowchart of the core network selection method according to an embodiment of the present application. As shown in FIG. 3, the core network selection method includes the following steps:

Step 301: The access network receives the first connection request message sent by the terminal, where the first connection request message carries at least one of the following: a first transmission method corresponding to the target data to be transmitted, and a network assigned to the terminal First UE identification information, first core network information.

Step 302: The access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message.

In the embodiment of the present application, the terminal may be, but not limited to, an IoT device.

In the embodiment of the present application, the access network may be any type of access network, such as an LTE access network, an NR access network, and so on.

In the embodiment of the present application, the information carried in the first connection request message sent by the terminal to the access network has the following two situations:

Case 1: The first connection request message carries the first transmission mode corresponding to the target data to be transmitted.

In this case, the access network selects the core network to which the terminal needs to connect based on the first transmission method and auxiliary information.

Case 2: The first connection request message carries the first transmission mode corresponding to the target data to be transmitted, the first UE identification information and/or the first core network information.

In this case, the access network selects the core network to which the terminal needs to connect based on the first transmission method, the first UE identification information, and/or the first core network information.

For case 1 or case 2, if the first connection request message does not carry the first core network information or the access network is based on the first core carried in the first connection request message If the network information fails to select the core network, the access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method.

Here, the access network determines the core network or core network set supporting the first transmission method based on the first configuration information or control signaling or user plane signaling between the access network and the core network.

In one embodiment, if the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends to the terminal The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected. Optionally, the access network rejects or releases the connection of the terminal.

In one embodiment, the access network receives a second notification message sent from the core network. The second notification message includes core network information and/or PLMN information supported by the core network. The access network will The information in the second notification message notifies the terminal or the access network to redirect the terminal to the corresponding frequency or RAT according to the information in the second notification message.

In the above solution of the embodiment of the present application, the first transmission method includes a method of transmitting data by using a control plane (for example, a method of encapsulating small data by NAS PDU) or a method of transmitting data by a user plane.

In the above solution of the embodiment of the present application, the access network side and the core network side determine the transmission mode that they each start based on the capability information of the terminal.

FIG. 4 is a schematic structural diagram 1 of a core network selection device according to an embodiment of the present application. As shown in FIG. 4, the core network selection device includes:

The sending unit 401 is configured to send a first connection request message to the access network, where the first connection request message carries at least one of the following: the first transmission mode corresponding to the target data to be transmitted, and the network assigns the terminal The first UE identification information and the first core network information, so that the access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message.

In an embodiment, the device further includes:

The determining unit 402 is used to determine the core network or core network set to be connected;

Wherein, the first UE identification information allocated by the network to the terminal refers to the first UE identification information allocated to the terminal by the core network or core network set.

In an embodiment, the determining unit 402 is configured to determine the core network or core network set to be connected according to whether the at least one core network supports capability information of the first transmission mode.

In an embodiment, the device further includes:

The first obtaining unit 403 is configured to obtain the capability information of whether the at least one core network supports the first transmission mode through non-access layer signaling or access layer signaling.

In an embodiment, the device further includes:

The second obtaining unit 404 is used to obtain the capability information of whether the access network supports the first transmission method;

The sending unit 401 is configured to send the first connection request message to the access network when the access network supports capability information of the first transmission method.

In an embodiment, the second acquiring unit 404 is configured to acquire, through system messages or dedicated signaling sent by the access network, capability information about whether the access network supports the first transmission mode; or, The capability information of whether the access network supports the first transmission method is obtained through a community identifier corresponding to the access network.

In an embodiment, if the first connection request message does not carry the first core network information or the access network selects a core based on the first core network information carried in the first connection request message If the network fails, the access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method.

In one embodiment, the access network determines the core network or core supporting the first transmission method based on the first configuration information or control signaling or user plane signaling between the access network and the core network Net collection.

In one embodiment, if the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends to the terminal The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected.

In one embodiment, the access network rejects or releases the connection of the terminal.

In one embodiment, the access network receives a second notification message sent from the core network. The second notification message includes core network information and/or PLMN information supported by the core network. The access network will The information in the second notification message notifies the terminal or the access network to redirect the terminal to the corresponding frequency or RAT according to the information in the second notification message.

In an embodiment, the device further includes:

The selection unit 405 is configured to select corresponding core network information and/or PLMN information on the corresponding frequency point or RAT according to the information in the second notification message.

In one embodiment, the first transmission method includes a control plane data transmission method, or a user plane data transmission method.

In one embodiment, the access network side and the core network side determine the transmission mode that they each start based on the capability information of the terminal.

Those skilled in the art should understand that the relevant description of the foregoing core network selection device in the embodiments of the present application can be understood with reference to the relevant description of the core network selection method in the embodiments of the present application.

FIG. 5 is a schematic structural diagram 2 of a core network selection device according to an embodiment of the present application. As shown in FIG. 5, the core network selection device includes:

The first receiving unit 501 is configured to receive a first connection request message sent by a terminal, where the first connection request message carries at least one of the following: a first transmission method corresponding to target data to be transmitted, and the network is the terminal The assigned first UE identity information and first core network information;

The selection unit 502 is configured to select a core network to which the terminal needs to connect based on information carried in the first connection request message.

In an embodiment, if the first connection request message does not carry the first core network information or the access network selects a core based on the first core network information carried in the first connection request message If the network fails, the selection unit 502 selects the core network to be connected by the terminal from the core network or core network set supporting the first transmission method. In an embodiment, the device further includes:

The determining unit 503 is configured to determine the core network or core network set supporting the first transmission mode based on the first configuration information or control signaling or user plane signaling between the access network and the core network.

In an embodiment, the device includes:

The notification unit 504 is configured to send a first notification message to the terminal if the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission mode, The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected.

In an embodiment, the device further includes:

The response unit 505 is used to refuse or release the connection of the terminal.

In an embodiment, the device further includes:

The second receiving unit 506 is configured to receive a second notification message sent from the core network, where the second notification message includes core network information and/or PLMN information supported by the core network;

The notification unit 504 is used to notify the terminal of the information in the second notification message or the access network to redirect the terminal to the corresponding frequency or RAT according to the information in the second notification message on.

In one embodiment, the first transmission method includes a control plane data transmission method, or a user plane data transmission method.

In one embodiment, the access network side and the core network side determine the transmission mode that they each start based on the capability information of the terminal.

Those skilled in the art should understand that the relevant description of the foregoing core network selection device in the embodiments of the present application can be understood with reference to the relevant description of the core network selection method in the embodiments of the present application.

FIG. 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device may be a terminal device or a network device (such as an access network device). The communication device 600 shown in FIG. 6 includes a processor 610. The processor 610 may call and run computer programs from the memory to The method in the embodiment of the present application is implemented.

Optionally, as shown in FIG. 6, the communication device 600 may further include a memory 620. The processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application.

The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

Optionally, as shown in FIG. 6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be a network device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. Repeat again.

Optionally, the communication device 600 may specifically be a mobile terminal/terminal device according to an embodiment of the present application, and the communication device 600 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for simplicity , Will not repeat them here.

7 is a schematic structural diagram of a wafer according to an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 7, the wafer 700 may further include a memory 720. The processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiments of the present application.

The memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

Optionally, the wafer 700 may further include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the wafer 700 may further include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, no further description is provided here.

Optionally, the wafer may be applied to the mobile terminal/terminal device in the embodiments of the present application, and the wafer may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. For brevity, here No longer.

It should be understood that the wafers mentioned in the embodiments of the present application may also be referred to as system-level wafers, system wafers, wafer systems, or system-on-chip wafers.

FIG. 8 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 8, the communication system 900 includes a terminal device 910 and a network device 920.

Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. Repeat again.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method embodiments may be completed by instructions in the form of hardware integrated logic circuits or software in the processor. The aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or Other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed. The 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 conjunction with the embodiments of the present application may be directly implemented and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a random storage memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically readable and writable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory. The processor reads the information in the memory and combines the hardware to complete the steps of the above method.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable and programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an 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 (Dynamic RAM, DRAM), synchronous dynamic random access memory ( Synchronous DRAM (SDRAM), double data rate synchronous dynamic random access memory (Double SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

It should be understood that the foregoing memory is exemplary but not limiting, for example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM) , DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.

The embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application. For simplicity, I will not repeat them here.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments 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 of the embodiments of the present application For the sake of brevity, I will not repeat them here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. This will not be repeated here.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, For brevity, I will not repeat them here.

The embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For brevity, I will not repeat them here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the methods of the embodiments of the present application by the mobile terminal/terminal device For the sake of brevity, I will not repeat them here.

Persons of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the unit is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or elements may be combined or may Integration into another system, or some features can be ignored, or not implemented. In addition, the displayed 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 electrical, mechanical or other forms.

The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed on multiple network units . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone, or two or more units may be integrated into one unit.

If the function is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application essentially or part of the contribution to the existing technology 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, including several The instruction is used to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage media include: pen drives, removable hard drives, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical discs, etc. can store program code Medium.

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the patent application scope of the invention.

100‧‧‧Communication system 110‧‧‧Network equipment 120‧‧‧terminal equipment 201, 301, 302‧‧‧ steps 401‧‧‧Sending unit 402‧‧‧Determine unit 403‧‧‧First acquisition unit 404‧‧‧Second acquisition unit 405‧‧‧selection unit 501‧‧‧First receiving unit 502‧‧‧selection unit 503‧‧‧ Confirmation unit 504‧‧‧Notification unit 505‧‧‧ Response unit 506‧‧‧Second receiving unit 600‧‧‧Communication equipment 610‧‧‧ processor 620‧‧‧Memory 630‧‧‧Transceiver 700‧‧‧chip 710‧‧‧ processor 720‧‧‧Memory 730‧‧‧ input interface 740‧‧‧Output interface 900‧‧‧Communication system 910‧‧‧terminal equipment 920‧‧‧Network equipment

The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an undue limitation on the present application. In the drawings:

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

2 is a schematic flowchart 1 of a core network selection method provided by an embodiment of this application;

3 is a second schematic flowchart of a core network selection method provided by an embodiment of this application;

FIG. 4 is a schematic structural diagram 1 of a core network selection device according to an embodiment of this application;

FIG. 5 is a schematic structural diagram 2 of a core network selection device according to an embodiment of this application;

6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

7 is a schematic structural diagram of a wafer of an embodiment of the present application;

8 is a schematic block diagram of a communication system provided by an embodiment of the present application.

201‧‧‧Step

Claims (21)

A core network selection method, the method includes: The terminal sends a first connection request message to the access network, where the first connection request message carries at least one of the following: a first transmission mode corresponding to the target data to be transmitted, and a first UE identifier assigned by the network to the terminal Information, first core network information, so that the access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message. The method according to item 1 of the patent application scope of the invention, wherein the method further comprises: Before sending the first connection request message to the access network, the terminal determines a core network or a core network set to be connected; Wherein, the first UE identification information allocated by the network to the terminal refers to: the first UE identification information allocated to the terminal by the core network or core network set; Wherein, the determination of the core network or core network set to be connected includes: The terminal determines the core network or core network set to be connected according to the capability information of whether at least one core network supports the first transmission mode; and Wherein, the terminal obtains the capability information of whether the at least one core network supports the first transmission mode through non-access layer signaling or access layer signaling. The method according to item 1 of the patent application scope of the invention, wherein the method further comprises: Before sending the first connection request message to the access network, the terminal obtains capability information of whether the access network supports the first transmission method; When the access network supports capability information of the first transmission method, send the first connection request message to the access network; and Wherein, acquiring the capability information of whether the access network supports the first transmission method includes: The terminal obtains the capability information of whether the access network supports the first transmission mode through a system message or dedicated signaling sent by the access network; or, The terminal obtains the capability information of whether the access network supports the first transmission mode through a community identifier corresponding to the access network. The method according to item 1 of the patent application scope of the invention, wherein if the first connection request message does not carry the first core network information or the access network is based on the first connection request message If the first core network information fails to select a core network, the access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method; Wherein, the access network determines the core network or core network set supporting the first transmission method based on the first configuration information or control signaling or user plane signaling between the access network and the core network; Wherein, if the access network cannot select the core network that the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends a first notification message to the terminal , The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected; and Wherein, the access network rejects or releases the connection of the terminal; and Wherein, the access network receives a second notification message sent from the core network, the second notification message includes core network information and/or PLMN information supported by the core network, and the access network sends the second notification message Notify the terminal or the access network of the information in the notification message according to the information in the second notification message to redirect the terminal to the corresponding frequency or RAT; and Wherein, the terminal selects the corresponding core network information and/or PLMN information on the corresponding frequency point or RAT according to the information in the second notification message. The method according to any one of item 1 of the patent application scope of the invention, wherein the first transmission method includes a data transmission method using a control plane, or a data transmission method using a user plane; and Wherein, the access network side and the core network side determine the transmission mode initiated by each based on the capability information of the terminal. A core network selection method, the method includes: The access network receives the first connection request message sent by the terminal, where the first connection request message carries at least one of the following: a first transmission mode corresponding to the target data to be transmitted, and a first UE allocated by the network to the terminal Logo information, first core network information; The access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message. The method according to item 6 of the patent application scope of the invention, wherein the method further comprises: If the first connection request message does not carry the first core network information or the access network fails to select a core network based on the first core network information carried in the first connection request message, then The access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method; Based on the first configuration information or control signaling or user plane signaling between the access network and the core network, the access network determines the core network or core network set that supports the first transmission method; If the access network cannot select the core network to which the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends a first notification message to the terminal, so The first notification message is used to notify the access network that the core network to which the terminal needs to be connected cannot be selected; and The access network rejects or releases the connection of the terminal. The method according to item 7 of the patent application scope of the invention, wherein the method further comprises: The access network receives a second notification message sent from the core network, the second notification message includes core network information and/or PLMN information supported by the core network, and the access network sends the second notification message The information in is notified to the terminal or the access network to redirect the terminal to the corresponding frequency or RAT according to the information in the second notification message. The method according to any one of item 6 of the patent application scope of the invention, wherein the first transmission method includes a data transmission method using a control plane, or a data transmission method using a user plane; and Wherein, the access network side and the core network side determine the transmission mode initiated by each based on the capability information of the terminal. A core network selection device. The device includes: The sending unit is configured to send a first connection request message to the access network, where the first connection request message carries at least one of the following: a first transmission method corresponding to the target data to be transmitted, and a network allocated to the terminal The first UE identification information and the first core network information, so that the access network selects the core network to which the terminal needs to connect based on the information carried in the first connection request message. The device according to item 10 of the patent application scope of the invention, wherein the device further comprises: The determining unit is used to determine the core network or core network set to be connected; Wherein, the first UE identification information allocated by the network to the terminal refers to: the first UE identification information allocated to the terminal by the core network or core network set; Wherein, the determining unit is configured to determine the core network or core network set to be connected according to whether the at least one core network supports the capability information of the first transmission mode; Wherein, the device further includes: a first obtaining unit, configured to obtain the capability information of whether the at least one core network supports the first transmission mode through non-access layer signaling or access layer signaling; A second acquisition unit for acquiring capability information of whether the access network supports the first transmission method; and The sending unit is configured to send the first connection request message to the access network when the access network supports capability information of the first transmission method; Wherein, the second obtaining unit is configured to obtain the capability information of whether the access network supports the first transmission mode through a system message or dedicated signaling sent by the access network; or, through the access The community identifier corresponding to the network obtains the capability information of whether the access network supports the first transmission method. The device according to item 10 of the patent application scope of the invention, wherein, if the first connection request message does not carry the first core network information or the access network is based on the first connection request message If the first core network information fails to select a core network, the access network selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method; Wherein, the access network determines the core network or core network set supporting the first transmission mode based on the first configuration information or control signaling or user plane signaling between the access network and the core network; and Wherein, if the access network cannot select the core network that the terminal needs to connect in the core network or core network set supporting the first transmission method, the access network sends a first notification message to the terminal , The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected; and Wherein, the access network rejects or releases the connection of the terminal. The device according to item 12 of the patent application scope of the invention, wherein the access network receives a second notification message sent from the core network, and the second notification message includes core network information supported by the core network and/or PLMN information, the access network notifies the terminal of the information in the second notification message or the access network redirects the terminal to the corresponding frequency according to the information in the second notification message Or on RAT; Wherein, the device further includes a selection unit for selecting the corresponding core network information and/or PLMN information on the corresponding frequency point or RAT according to the information in the second notification message. The device according to items 10 to 13 of the patent application scope of the invention, wherein the first transmission method includes a data transmission method using a control plane or a data transmission method using a user plane; and Based on the capability information of the terminal, the access network side and the core network side determine the transmission modes that are started by each. A core network selection device. The device includes: The first receiving unit is configured to receive a first connection request message sent by a terminal, where the first connection request message carries at least one of the following: a first transmission method corresponding to target data to be transmitted, and a network to allocate to the terminal The first UE identification information and the first core network information; The selection unit is configured to select the core network to which the terminal needs to connect based on the information carried in the first connection request message. The device according to item 15 of the patent application scope of the invention, wherein if the first connection request message does not carry the first core network information or the access network is based on the first connection request message If the first core network information fails to select the core network, the selection unit selects the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method; and Wherein, the device further includes: a determining unit for determining the core network supporting the first transmission mode based on the first configuration information or control signaling or user plane signaling between the access network and the core network Or core network collection; The notification unit is configured to send a first notification message to the terminal if the access network cannot select the core network to which the terminal needs to connect among the core network or core network set supporting the first transmission method. The first notification message is used to notify the access network that the core network that the terminal needs to connect to cannot be selected; The response unit is used to refuse or release the connection of the terminal: A second receiving unit, configured to receive a second notification message sent from the core network, where the second notification message includes core network information and/or PLMN information supported by the core network; and A notification unit, configured to notify the terminal of the information in the second notification message or the access network to redirect the terminal to a corresponding frequency or RAT according to the information in the second notification message . The device according to item 15 of the patent application scope of the invention, wherein the first transmission method includes a data transmission method using a control plane, or a data transmission method using a user plane; and Wherein, the access network side and the core network side determine the transmission mode initiated by each based on the capability information of the terminal. A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, execute The method according to any one of items 1 to 5. A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute the patent application scope of the invention The method according to any one of items 6 to 9. A chip, characterized in that it includes: a processor for calling and running a computer program from the memory, so that the device installed with the chip executes items 1 to 5 of the patent application scope of the invention or item 6 of the patent application scope of the invention The method according to any one of items 9 to 9. A computer program, characterized in that the computer program causes the computer to execute the method described in any one of items 1 to 5 of the patent application scope of the invention or items 6 to 9 of the patent application scope of the invention.

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