CN111869266A

CN111869266A - Core network selection method and device, terminal equipment and network equipment

Info

Publication number: CN111869266A
Application number: CN201880091399.5A
Authority: CN
Inventors: 刘建华; 杨宁
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2020-10-30
Also published as: WO2020000174A1; TW202007199A

Abstract

The application discloses a core network selection method and device, terminal equipment and network equipment, wherein the method comprises the following steps: a terminal sends a first connection request message to an access network, wherein the first connection request message carries at least one of the following: the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.

Description

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

Technical Field

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

Background

In future networks, there will be a large number Of Internet Of Things (IoT) devices present in the network. When the IoT device sends small Data, the small Data may be encapsulated by a Non-access stratum (NAS) Protocol Data Unit (PDU) for sending, and this method is called a control plane Data transmission method. Another way of sending small data is to use an optimized user plane data transmission way, in which the terminal realizes the small data transmission of the user plane through fast state transition to save the signaling overhead. Fast state transition is achieved by maintaining the context of the terminal in a specific state both by the network and by the terminal.

Since the modes of the network and the terminal for supporting the control plane and the user plane are selectable, the terminal cannot properly select the core network when selecting the network or the access network when selecting the core network.

Disclosure of Invention

In order to solve the above technical problem, embodiments of the present application provide a core network selection method and apparatus, a terminal device, and a network device.

The core network selection method provided by the embodiment of the application comprises the following steps:

a terminal sends a first connection request message to an access network, wherein the first connection request message carries at least one of the following: the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.

In an embodiment, the method further comprises:

before the terminal sends the first connection request message to the access network, determining a core network or a core network set which needs to be connected;

wherein, the first UE identification information allocated by the network to the terminal means: and the core network or the core network set is the first UE identification information distributed by the terminal.

In an embodiment, the determining a core network or a set of core networks to be connected includes:

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

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

In an embodiment, the method further comprises:

before the terminal sends the first connection request message to the access network, acquiring the capability information whether the access network supports the first transmission mode;

and when the access network supports the capability information of the first transmission mode, the access network sends the first connection request message to the access network.

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

the terminal acquires the capability information whether the access network supports the first transmission mode or not through a system message or a special signaling sent by the access network; alternatively, the first and second electrodes may be,

and the terminal acquires the capability information whether the access network supports the first transmission mode or not through the cell identification 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 fails to select a core network based on the first core network information carried in the first connection request message, the access network selects a core network to which the terminal needs to connect from a core network or a core network set supporting the first transmission mode.

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

In an embodiment, if the access network cannot select a core network to which the terminal needs to connect from a core network or a set of core networks supporting the first transmission mode, the access network sends a first notification message to the terminal, where the first notification message is used to notify that the access network cannot select the core network to which the terminal needs to connect.

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

In an embodiment, the access network receives a second notification message sent from a core network, where the second notification message includes core network information and/or PLMN information supported by the core network, and the access network notifies the terminal of the information in the second notification message or redirects the terminal to a corresponding frequency point or RAT according to the information in the second notification message.

In an embodiment, the terminal selects, according to the information in the second notification message, corresponding core Network information and/or Public Land Mobile Network (PLMN) information on a corresponding frequency point or Radio Access Type (RAT).

In an embodiment, the first transmission mode includes a mode of transmitting data by using a control plane or a mode of transmitting data by using a user plane.

In an embodiment, the access network side and the core network side determine respective initiated transmission modes based on capability information of the terminal.

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

and the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.

In an embodiment, 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 the core network based on the first core network information carried in the first connection request message, the access network selects the core network to which the terminal needs to be connected from the core network or the core network set supporting the first transmission mode.

In an embodiment, the method further comprises:

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

In an embodiment, the method further comprises:

if the access network cannot select the core network to which the terminal needs to be connected from the core networks or the core network set supporting the first transmission mode, the access network sends a first notification message to the terminal, wherein the first notification message is used for notifying the access network that the core network to which the terminal needs to be connected cannot be selected.

In an embodiment, the method further comprises:

the access network refuses or releases the connection of the terminal.

In an embodiment, the method further comprises:

the access network receives a second notification message sent by a core network, wherein the second notification message comprises core network information and/or PLMN information supported by the core network, and the access network notifies the terminal of the information in the second notification message or redirects the terminal to a corresponding frequency point or RAT according to the information in the second notification message.

The core network selection apparatus provided in the embodiment of the present application includes:

a sending unit, configured to send a first connection request message to an access network, where the first connection request message carries at least one of the following: the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.

In one embodiment, the apparatus further comprises:

a determining unit, configured to determine a core network or a core network set that needs to be connected;

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

In one embodiment, the apparatus further comprises:

a first obtaining unit, configured to obtain, through non-access stratum signaling or access stratum signaling, capability information whether the at least one core network supports the first transmission mode.

In one embodiment, the apparatus further comprises:

a second obtaining unit, configured to obtain capability information whether the access network supports the first transmission mode;

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

In an embodiment, the second obtaining unit is configured to obtain, through a system message or a dedicated signaling sent by the access network, capability information of whether the access network supports the first transmission mode; or acquiring the capability information whether the access network supports the first transmission mode or not through the cell identifier corresponding to the access network.

In one embodiment, the apparatus further comprises:

and the selecting unit is used for selecting corresponding core network information and/or PLMN information on a corresponding frequency point or RAT according to the information in the second notification message.

a first receiving unit, 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 mode corresponding to target data to be transmitted, first UE identification information distributed by a network to the terminal, and first core network information;

and the selecting unit is used for selecting the core network to which the terminal needs to be connected 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 fails to select a core network based on the first core network information carried in the first connection request message, the selecting unit selects a core network to which the terminal needs to connect from a core network or a core network set supporting the first transmission scheme.

In one embodiment, the apparatus further comprises:

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

In one embodiment, the apparatus comprises:

a notifying unit, configured to send a first notification message to the terminal if the access network cannot select a core network to which the terminal needs to connect from a core network or a core network set that supports the first transmission mode, where the first notification message is used to notify that the access network cannot select the core network to which the terminal needs to connect.

In one embodiment, the apparatus further comprises:

and the response unit is used for rejecting or releasing the connection of the terminal.

In one embodiment, the apparatus further comprises:

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

and the notifying unit is used for notifying the information in the second notification message to the terminal or the access network to redirect the terminal to a corresponding frequency point or RAT according to the information in the second notification message.

The terminal device provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing computer programs, and the processor is used for calling and running the computer programs stored in the memory and executing the core network selection method.

The network equipment provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing computer programs, and the processor is used for calling and running the computer programs stored in the memory and executing the core network selection method.

The chip provided by the embodiment of the application is used for realizing the core network selection method.

Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the core network selection method.

The computer-readable storage medium provided in the embodiments of the present application is used for storing a computer program, and the computer program enables a computer to execute the above-mentioned core network selection method.

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

The computer program provided in the embodiments of the present application, when running on a computer, causes the computer to execute the above-described core network selection method.

Through the technical scheme of the embodiment of the application, the terminal can effectively select the appropriate core network for connection when selecting the network or the access network selects the core network, so that the probability of failure in connection with the core network is reduced, and the transmission of small data according to the characteristic transmission mode is effectively ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

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

fig. 2 is a first flowchart illustrating a core network selection method according to an embodiment of the present application;

fig. 3 is a second flowchart illustrating a core network selection method according to an embodiment of the present application;

fig. 4 is a first schematic structural diagram of a core network selection apparatus according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a core network selection apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a chip of an embodiment of the present application;

fig. 8 is a schematic block diagram of a communication system provided in 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 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, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the 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 may be a Network device in 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 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.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of 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.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

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 a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

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. 2 is a first flowchart of a core network selection method according to an embodiment of the present application, and as shown in fig. 2, the core network selection method includes the following steps:

step 201: a terminal sends a first connection request message to an access network, wherein the first connection request message carries at least one of the following: the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.

In the embodiment of the present application, the terminal may be, but is 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 the like.

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:

the first condition is as follows: and the first connection request message carries a first transmission mode corresponding to target data to be transmitted.

For this case, the access network selects a core network to which the terminal needs to connect based on the first transmission mode and the assistance information.

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

For this case, the access network selects a core network to which the terminal needs to connect based on the first transmission mode, the first UE identity information, and/or the first core network information.

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

In this embodiment of the present application, before the terminal sends the first connection request message to the access network, a core network or a core network set that needs to be connected is determined; the terminal selects the 5G-S-TMSI allocated by the core network or the core network set, that is, the first UE identification information allocated by the network to the terminal means: and the core network or the core network set is the first UE identification information distributed by the terminal.

In an embodiment, the terminal determines a core network or a core network set that needs to be connected by: and the terminal determines the core network or the core network set which needs to be connected according to the capability information of whether at least one core network supports the first transmission mode. Further, the terminal acquires, through non-access stratum signaling or access stratum signaling, capability information whether the at least one core network supports the first transmission mode.

In this embodiment of the present application, before the terminal sends the first connection request message to the access network, capability information indicating whether the access network supports the first transmission mode is obtained; and when the access network supports the capability information of the first transmission mode, the access network sends the first connection request message to the access network.

In an embodiment, the terminal obtains the capability information of whether the access network supports the first transmission mode by: 1) the terminal acquires the capability information whether the access network supports the first transmission mode or not through a system message or a special signaling sent by the access network; or, 2) the terminal obtains the capability information of whether the access network supports the first transmission mode through the cell identifier corresponding to the access network.

For the above-mentioned first or second case, 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, the access network selects a core network to which the terminal needs to connect from a core network or a core network set supporting the first transmission mode.

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

In an embodiment, if the access network cannot select a core network to which the terminal needs to connect from a core network or a set of core networks supporting the first transmission mode, the access network sends a first notification message to the terminal, where the first notification message is used to notify that the access network cannot select the core network to which the terminal needs to connect. Optionally, the access network rejects or releases the connection of the terminal.

In an embodiment, the access network receives a second notification message sent from a core network, where the second notification message includes core network information and/or PLMN information supported by the core network, and the access network notifies the terminal of the information in the second notification message or redirects the terminal to a corresponding frequency point or RAT according to the information in the second notification message. Correspondingly, the terminal selects corresponding core network information and/or PLMN information on corresponding frequency points or RATs according to the information in the second notification message.

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

In the foregoing solution of the embodiment of the present application, the access network side and the core network side determine respective initiated transmission modes based on the capability information of the terminal.

Fig. 3 is a second flowchart illustrating a core network selection method according to an embodiment of the present application, where as shown in fig. 3, the core network selection method includes the following steps:

step 301: an access network receives a first connection request message sent by a terminal, wherein the first connection request message carries at least one of the following: the terminal comprises a first transmission mode corresponding to target data needing to be transmitted, first UE identification information distributed to the terminal by a network and first core network information.

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

Fig. 4 is a first schematic structural diagram of a core network selection apparatus according to an embodiment of the present application, and as shown in fig. 4, the core network selection apparatus includes:

a sending unit 401, configured to send a first connection request message to an access network, where the first connection request message carries at least one of the following: the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.

In one embodiment, the apparatus further comprises:

a determining unit 402, configured to determine a core network or a core network set that needs to be connected;

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

In one embodiment, the apparatus further comprises:

a first obtaining unit 403, configured to obtain, through non-access stratum signaling or access stratum signaling, capability information whether the at least one core network supports the first transmission mode.

In one embodiment, the apparatus further comprises:

a second obtaining unit 404, configured to obtain capability information whether the access network supports the first transmission mode;

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

In an embodiment, the second obtaining unit 404 is configured to obtain, through a system message or a dedicated signaling sent by the access network, capability information of whether the access network supports the first transmission mode; or acquiring the capability information whether the access network supports the first transmission mode or not through the cell identifier corresponding to the access network.

In one embodiment, the apparatus further comprises:

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

It should be understood by those skilled in the art that the relevant description of the core network selection apparatus in the embodiments of the present application may be understood by referring to the relevant description of the core network selection method in the embodiments of the present application.

Fig. 5 is a schematic structural configuration diagram of a core network selection apparatus according to an embodiment of the present application, and as shown in fig. 5, the core network selection apparatus includes:

a first receiving unit 501, 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 mode corresponding to target data to be transmitted, first UE identification information distributed by a network to the terminal, and first core network information;

a selecting unit 502, configured to select a 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 fails to select a core network based on the first core network information carried in the first connection request message, the selecting unit 502 selects a core network to which the terminal needs to connect from a core network or a core network set supporting the first transmission scheme.

In one embodiment, the apparatus further comprises:

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

In one embodiment, the apparatus comprises:

a notifying unit 504, configured to send a first notification message to the terminal if the access network cannot select a core network to which the terminal needs to connect from a core network or a core network set that supports the first transmission mode, where the first notification message is used to notify that the access network cannot select the core network to which the terminal needs to connect.

In one embodiment, the apparatus further comprises:

a response unit 505, configured to reject or release the connection of the terminal.

In one embodiment, the apparatus further comprises:

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

a notifying unit 504, configured to notify the terminal or the access network of the information in the second notification message, and redirect the terminal to a corresponding frequency point or RAT according to the information in the second notification message.

Fig. 6 is a schematic structural diagram of a communication device 600 according to an embodiment of the present application. The communication device may be a terminal device or a network device (e.g., an access network device), and the communication device 600 shown in fig. 6 includes a processor 610, and the processor 610 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 6, 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. 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, 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. 7 is a schematic structural diagram of a chip of 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 a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 7, 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. 8 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 9, 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

A method of core network selection, the method comprising:

a terminal sends a first connection request message to an access network, wherein the first connection request message carries at least one of the following: the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.
The method of claim 1, wherein the method further comprises:

before the terminal sends the first connection request message to the access network, determining a core network or a core network set which needs to be connected;

wherein, the first UE identification information allocated by the network to the terminal means: and the core network or the core network set is the first UE identification information distributed by the terminal.
The method of claim 2, wherein the determining the core network or the set of core networks that need to be connected comprises:

and the terminal determines the core network or the core network set which needs to be connected according to the capability information of whether at least one core network supports the first transmission mode.
The method of claim 3, wherein the terminal obtains the capability information of whether the at least one core network supports the first transmission mode through non-access stratum signaling or access stratum signaling.
The method of any of claims 1 to 4, wherein the method further comprises:

before the terminal sends the first connection request message to the access network, acquiring the capability information whether the access network supports the first transmission mode;

and when the access network supports the capability information of the first transmission mode, the access network sends the first connection request message to the access network.
The method of claim 5, wherein the obtaining capability information of whether the access network supports the first transmission mode comprises:

the terminal acquires the capability information whether the access network supports the first transmission mode or not through a system message or a special signaling sent by the access network; alternatively, the first and second electrodes may be,

and the terminal acquires the capability information whether the access network supports the first transmission mode or not through the cell identification corresponding to the access network.
The method according to any one of claims 1 to 6, wherein 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, the access network selects a core network to which the terminal needs to connect from a core network or a set of core networks supporting the first transmission mode.
The method of claim 7, wherein the access network determines the core network or the set of core networks supporting the first transmission mode based on first configuration information or control signaling or user plane signaling between the access network and the core network.
The method according to claim 7 or 8, wherein if the access network cannot select a core network to which the terminal needs to connect from a core network or a set of core networks supporting the first transmission mode, the access network sends a first notification message to the terminal, and the first notification message is used for notifying that the access network cannot select the core network to which the terminal needs to connect.
The method of claim 9, wherein the access network denies or releases the connection of the terminal.
The method according to any one of claims 7 to 10, wherein the access network receives a second notification message sent from a core network, the second notification message includes core network information and/or PLMN information supported by the core network, and the access network notifies the terminal of the information in the second notification message or redirects the terminal to a corresponding frequency point or RAT according to the information in the second notification message.
The method of claim 11, wherein the terminal selects corresponding core network information and/or PLMN information on a corresponding frequency point or RAT according to the information in the second notification message.
The method according to any one of claims 1 to 12, wherein the first transmission mode comprises a mode of transmitting data by using a control plane or a mode of transmitting data by using a user plane.
The method according to any of claims 1 to 13, wherein the access network side and the core network side determine the respective initiated transmission mode based on capability information of the terminal.
A method of core network selection, the method comprising:

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

and the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.
The method of claim 15, 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 the core network based on the first core network information carried in the first connection request message, the access network selects the core network to which the terminal needs to be connected from the core network or the core network set supporting the first transmission mode.
The method of claim 16, wherein the method further comprises:

and the access network determines a core network or a core network set supporting the first transmission mode based on first configuration information or control signaling or user plane signaling between the access network and the core network.
The method of claim 16 or 17, wherein the method further comprises:

if the access network cannot select the core network to which the terminal needs to be connected from the core networks or the core network set supporting the first transmission mode, the access network sends a first notification message to the terminal, wherein the first notification message is used for notifying the access network that the core network to which the terminal needs to be connected cannot be selected.
The method of claim 18, wherein the method further comprises:

the access network refuses or releases the connection of the terminal.
The method of claim 18 or 19, wherein the method further comprises:

the access network receives a second notification message sent by a core network, wherein the second notification message comprises core network information and/or PLMN information supported by the core network, and the access network notifies the terminal of the information in the second notification message or redirects the terminal to a corresponding frequency point or RAT according to the information in the second notification message.
The method according to any one of claims 15 to 20, wherein the first transmission mode comprises a mode of transmitting data by using a control plane or a mode of transmitting data by using a user plane.
The method according to any of claims 15 to 21, wherein the access network side and the core network side determine the respective initiated transmission means based on capability information of the terminal.
An apparatus for core network selection, the apparatus comprising:

a sending unit, configured to send a first connection request message to an access network, where the first connection request message carries at least one of the following: the access network selects the core network to which the terminal needs to be connected based on the information carried in the first connection request message.
The apparatus of claim 23, wherein the apparatus further comprises:

a determining unit, configured to determine a core network or a core network set that needs to be connected;

wherein, the first UE identification information allocated by the network to the terminal means: and the core network or the core network set is the first UE identification information distributed by the terminal.
The apparatus according to claim 24, wherein the determining unit is configured to determine the core network or the set of core networks that need to be connected according to capability information of whether at least one core network supports the first transmission mode.
The apparatus of claim 25, wherein the apparatus further comprises:

a first obtaining unit, configured to obtain, through non-access stratum signaling or access stratum signaling, capability information whether the at least one core network supports the first transmission mode.
The apparatus of any one of claims 23 to 26, wherein the apparatus further comprises:

a second obtaining unit, configured to obtain capability information whether the access network supports the first transmission mode;

the sending unit is configured to send the first connection request message to the access network when the access network supports the capability information of the first transmission mode.
The apparatus of claim 27, wherein the second obtaining unit is configured to obtain, through a system message or dedicated signaling sent by the access network, capability information of whether the access network supports the first transmission mode; or acquiring the capability information whether the access network supports the first transmission mode or not through the cell identifier corresponding to the access network.
The apparatus according to any one of claims 23 to 28, wherein 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, the access network selects a core network to which the terminal needs to connect from a core network or a set of core networks supporting the first transmission scheme.
The apparatus of claim 29, wherein the access network determines a core network or a set of core networks supporting the first transmission mode based on first configuration information or control signaling or user plane signaling between the access network and the core network.
The apparatus according to claim 29 or 30, wherein if the access network cannot select a core network to which the terminal needs to connect among a core network or a set of core networks supporting the first transmission scheme, the access network sends a first notification message to the terminal, where the first notification message is used to notify that the access network cannot select the core network to which the terminal needs to connect.
The apparatus of claim 31, wherein the access network denies or releases the connection of the terminal.
The apparatus according to any one of claims 29 to 32, wherein the access network receives a second notification message sent from a core network, the second notification message includes core network information and/or PLMN information supported by the core network, and the access network notifies the terminal of the information in the second notification message or redirects the terminal to a corresponding frequency point or RAT according to the information in the second notification message.
The apparatus of claim 33, wherein the apparatus further comprises:

and the selecting unit is used for selecting corresponding core network information and/or PLMN information on a corresponding frequency point or RAT according to the information in the second notification message.
The apparatus of any one of claims 23 to 34, wherein the first transmission mode comprises a mode of transmitting data using a control plane or a mode of transmitting data using a user plane.
The apparatus according to any of claims 23 to 35, wherein the access network side and the core network side determine respective initiated transmission manners based on capability information of the terminal.
An apparatus for core network selection, the apparatus comprising:

a first receiving unit, 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 mode corresponding to target data to be transmitted, first UE identification information distributed by a network to the terminal, and first core network information;

and the selecting unit is used for selecting the core network to which the terminal needs to be connected based on the information carried in the first connection request message.
The apparatus of claim 37, wherein 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, the selecting unit selects a core network to which the terminal needs to connect from a core network or a set of core networks supporting the first transmission scheme.
The apparatus of claim 38, wherein the apparatus further comprises:

a determining unit, configured to determine a core network or a core network set supporting the first transmission mode based on first configuration information or control signaling or user plane signaling between the access network and the core network.
The apparatus of claim 38 or 39, wherein the apparatus comprises:

a notifying unit, configured to send a first notification message to the terminal if the access network cannot select a core network to which the terminal needs to connect from a core network or a core network set that supports the first transmission mode, where the first notification message is used to notify that the access network cannot select the core network to which the terminal needs to connect.
The apparatus of claim 40, wherein the apparatus further comprises:

and the response unit is used for rejecting or releasing the connection of the terminal.
The apparatus of claim 40 or 41, wherein the apparatus further comprises:

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

and the notifying unit is used for notifying the information in the second notification message to the terminal or the access network to redirect the terminal to a corresponding frequency point or RAT according to the information in the second notification message.
The apparatus of any one of claims 37 to 42, wherein the first transmission mode comprises a mode of transmitting data using a control plane or a mode of transmitting data using a user plane.
The apparatus according to any of claims 37 to 43, wherein the access network side and the core network side determine respective initiated transmission modes based on capability information of the terminal.
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 14.
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 15 to 22.
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 one of claims 1 to 14.
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 one of claims 15 to 22.
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 14.
A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 15 to 22.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 14.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 15 to 22.
A computer program, characterized in that the computer program causes a computer to perform the method according to any of claims 1 to 14.
Computer program, characterized in that it causes a computer to execute the method according to any one of claims 15 to 22