CN110831109B

CN110831109B - Network selection method, terminal, network indication method and network side equipment

Info

Publication number: CN110831109B
Application number: CN201810909184.1A
Authority: CN
Inventors: 康艳超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-08-10
Filing date: 2018-08-10
Publication date: 2022-04-12
Anticipated expiration: 2038-08-10
Also published as: WO2020029812A1; CN110831109A

Abstract

The invention provides a network selection method, a terminal, a network indication method and network side equipment, wherein the network selection method comprises the following steps: receiving a broadcast message from network side equipment, wherein the broadcast message at least carries first network identification information; and selecting an access network at least according to the first network identification information and second network identification information prestored in the terminal. In the invention, the broadcast message carrying the first network identification information is sent by the network side equipment, and the second network identification information is prestored in the terminal, so that the terminal can select the access network at least according to the first network identification information and the second network identification information. Therefore, the invention solves the problem of network selection in the 5G local area network service, so that the terminal can select a proper network for access.

Description

Network selection method, terminal, network indication method and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a network selection method, a terminal, a network indication method, and a network side device.

Background

Many vertical industries have communications requirements such as railway scheduling, automation control, etc. The 5G communication Network can provide a private communication service of a LAN (Local Area Network) type for the vertical industry to meet the communication demand of the vertical industry. A LAN-type service (5G LAN-type service) in 5G may refer to providing an IP (Internet Protocol) or non-IP type private communication service on a 3GPP (3rd Generation Partnership Project) network system.

The private communication network may include a type a network and/or a type B network, among others. A type a network may be a 3GPP network that is not intended for the public, but which may support service continuity or roaming with the operator network. The type B network may be an isolated 3GPP network that does not interact with the operator network.

In order to enable the 5G communication network to support industrial local area network Services (Vertical and LAN Services), the terminal needs to have a condition for selecting and accessing the network, however, how the terminal should select a suitable network for accessing does not provide a corresponding solution at present.

Disclosure of Invention

The embodiment of the invention provides a network selection method, a terminal, a network indication method and network side equipment, which aim to solve the problem that no network selection scheme suitable for 5G local area network services exists at present.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a network selection method, which is applied to a terminal, and the method includes:

receiving a broadcast message from network side equipment, wherein the broadcast message at least carries first network identification information;

and selecting an access network at least according to the first network identification information and second network identification information prestored in the terminal.

In a second aspect, an embodiment of the present invention provides another network indication method, which is applied to a network side device, and includes:

sending a broadcast message to a terminal, wherein the broadcast message at least carries first network identification information;

the first network identification information and second network identification information pre-stored in the terminal are used for assisting the terminal in selecting an access network.

In a third aspect, an embodiment of the present invention provides a terminal, including:

the receiving module is used for receiving a broadcast message from network side equipment, wherein the broadcast message at least carries first network identification information;

and the selection module is used for selecting an access network at least according to the first network identification information and second network identification information prestored in the terminal.

In a fourth aspect, an embodiment of the present invention provides a network side device, including:

the first sending module is used for sending a broadcast message to a terminal, wherein the broadcast message at least carries first network identification information;

In a fifth aspect, an embodiment of the present invention provides a terminal, including: the terminal comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the computer program is executed by the processor, the steps in the network selection method corresponding to the terminal provided by the embodiment of the invention are realized.

In a sixth aspect, an embodiment of the present invention provides a network side device, including: the network selection method comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the computer program is executed by the processor, the steps in the network selection method corresponding to the network side equipment provided by the embodiment of the invention are realized.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the steps of the network selection method provided in the embodiment of the present invention; or, the steps of the network indication method provided by the embodiment of the present invention are implemented.

In the embodiment of the invention, the broadcast message carrying the first network identification information is sent by the network side equipment, and the second network identification information is prestored in the terminal, so that the terminal can select the access network at least according to the first network identification information and the second network identification information. Therefore, the embodiment of the invention solves the problem of network selection in the 5G local area network service, so that the terminal can select a proper network for access.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a block diagram of a network selection system according to an embodiment of the present invention;

fig. 2 is a flowchart of a network selection method according to an embodiment of the present invention;

fig. 3 is a flowchart of another network selection method provided by the embodiment of the present invention;

fig. 4 is a flowchart of another network selection method provided by the embodiment of the present invention;

fig. 5 is a flowchart of a network indication method according to an embodiment of the present invention;

fig. 6 is a hierarchical diagram of network selection performed by a terminal according to an embodiment of the present invention;

fig. 7 is a structural diagram of a terminal according to an embodiment of the present invention;

fig. 8 is a block diagram of another terminal provided in an embodiment of the present invention;

fig. 9 is a structural diagram of a network side device according to an embodiment of the present invention;

fig. 10 is a block diagram of another network-side device provided in the embodiment of the present invention;

fig. 11 is a schematic diagram of a hardware structure of a terminal according to an embodiment of the present invention;

fig. 12 is a schematic hardware structure diagram of a network-side device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The network selection method provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a 5G NR (New Radio, New air interface) system, or a Long Term Evolution (LTE) system, or an Evolved Long Term Evolution (LTE) system, or a subsequent Evolved communication system.

Fig. 1 is a structural diagram of a network selection system according to an embodiment of the present invention, as shown in fig. 1, including a terminal (UE) 11 and a network side device 12, where the terminal 11 may be a mobile communication terminal, for example: the terminal may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and the specific type of the terminal 11 is not limited in the embodiments of the present invention. The network side device 12 may be a 5G network side device (e.g., a gNB, a 5G NR NB), or may be a 4G network side device (e.g., an eNB), or may be a 3G network side device (e.g., an NB), or a network side device in a subsequent evolved communication system, and so on, it should be noted that a specific type of the network side device 12 is not limited in the embodiment of the present invention.

An embodiment of the present invention provides a network selection system as shown in fig. 1, and provides a network selection method applied to the network selection system, as follows:

a terminal receives a broadcast message from network side equipment, wherein the broadcast message at least carries first network identification information;

and the terminal selects an access network at least according to the first network identification information and second network identification information prestored in the terminal.

The access network selected by the terminal may be a private communication network in a third generation partnership project 3GPP network system, and the access network selected by the terminal may also be a public network. Among them, the private communication network can be classified into a Type-a network (Type-a network) and a Type-B network (Type-B network). A type a network may be a 3GPP network that is not intended for the public, but which may support service continuity or roaming with the operator network. The type B network may be an isolated 3GPP network that does not interact with the operator network.

Fig. 2 is a flowchart of a network selection method according to an embodiment of the present invention. As shown in fig. 2, the network selection method, applied to a terminal, includes the following steps:

step 201: and receiving a broadcast message from network side equipment, wherein the broadcast message at least carries the broadcast message of the first network identification information.

In this step, after the terminal is powered on, the terminal may receive a broadcast message sent by the network side device, where the broadcast message at least carries first network identification information (network ID).

Step 202: and selecting an access network at least according to the first network identification information and second network identification information prestored in the terminal.

In this step, after receiving the broadcast message of the network side device, the terminal may select an access network at least according to the first network identification information and the second network identification information pre-stored in the terminal.

The second Network identification information is used to identify a Network accessible under a specific PLMN (Public Land Mobile Network), and the second Network identification information may be at least one of the following:

local area network identification based on protocol specification, such as 5G local area network identification;

slice identification S-NSSAI;

and the network type identifier is customized by an operator.

The second network identification information may be understood as a network subscription information of the terminal, and when the terminal has a subscription to access a certain network, the terminal may store a network ID corresponding to the network. The network subscription information may be stored in a USIM (Universal Subscriber Identity Module) of the terminal, and when network subscription is performed, an operator or a user may configure a data file on the USIM, and data stored in the data file on the USIM may be consistent with the network subscription information of the terminal.

Further, the data file of the USIM may include at least one of a User Controlled PLMN Selector with Access Technology (User Controlled PLMN) list and an Operator Controlled PLMN Selector with Access Technology (Operator Controlled PLMN) list.

The elements stored in the user control list at least include network IDs, access technologies (access technologies), and public land mobile network identification information (PLMN IDs). The elements stored in the user control list may adopt structures of PLMN ID, network ID and access technologies, or may adopt structures of PLMN ID and access technologies.

The elements stored in the operator control list include at least network ID, and may also include access technologies, and may also include PLMN ID. The elements stored in the operator control list may adopt structures of PLMN ID, network ID and access technologies, or may adopt structures of PLMN ID and access technologies.

Table 1 shows the data structure of the data file on the USIM using the PLMN ID, network ID and access technologies.

Description	M/O	Length
			1^st PLMN(highest priority)	M	3bytes
1^st PLMN network ID(highest priority)	M	2～4bytes
			1^st PLMN Access Technology Identifier	M	2bytes
……	……	……
			8^th PLMN	M	3bytes
8^th PLMN network ID(highest priority)	M	2～4bytes
			8^th PLMN Access Technology Identifier	M	2bytes
9^th PLMN	O	3bytes
			9^th PLMN network ID(highest priority)	O	2～4bytes
9^th PLMN Access Technology Identifier	O	2bytes
			……	……	……
N^th PLMN(lowest priority)	O	3bytes
			N^th PLMN network ID(highest priority)	O	2～4bytes
N^th PLMN Access Technology Identifier	O	2bytes

TABLE 1

Further, when the data file of the USIM includes the user control list and the operator control list, the second network identification information stored in the user control list is preferentially used; or, preferentially using the second network identification information and the second access technology information stored in the user control list; or, preferentially using the second PLMN identification information, the second network identification information, and the second access technology information stored in the user control list.

As previously described, the private communication network may include a type a network and/or a type B network. A type a network may be a 3GPP network that is not intended for the public, but which may support service continuity or roaming with the operator network. The type B network may be an isolated 3GPP network that does not interact with the operator network.

Accordingly, the second network identification information may include at least one of:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

wherein the type A network and/or the type B network is a private communication network in a third generation partnership project (3 GPP) network system.

For a terminal that can access a type a network, an operator may write, in a USIM of a user, a PLMN ID corresponding to a public PLMN that the terminal can access, a network ID and access technologies corresponding to the type a network.

For a terminal that can access a type B network, an operator may write a network ID and access technologies corresponding to the type B network that the terminal can access in a USIM of the user.

Among other things, since a type B network is an isolated network, it does not need to interact with the operator network. Therefore, for a terminal that can access a type B network and needs to access the type B network, the terminal may select an access network only according to the network ID, or according to the network ID and the access technologies, or according to the PLMN ID, the network ID, and the access technologies.

Wherein the network may support service continuity or roaming with the operator network due to type a. Therefore, for a terminal that can access a type a network and needs to access the type a network, in order to meet the requirement that the terminal accesses the type a network and interacts with a public PLMN roaming, the terminal may select an access network according to the network ID and the PLMN ID, or according to the PLMN ID, the network ID and the access technologies.

Optionally, the selecting an access network according to at least the first network identification information and second network identification information pre-stored in the terminal includes:

the access layer of the terminal reports the first network identification information to a non-access layer of the terminal;

the non-access layer selects target network identification information matched with the second network identification information from the first network identification information and informs the access layer of the target network identification information;

and the access layer selects an access network based on the target network identification information.

The embodiment provides a specific process for selecting an access network, and after the terminal is powered on, an access stratum (AS layer) of the terminal may report the first network identification information in the broadcast message to a non-access stratum (NAS layer) of the terminal. In the automatic network selection mode, the NAS layer of the terminal may select target network identification information matched with the second network identification information from the first network identification information, and feed back the target network identification information to the AS layer. And the AS layer receives the target network identification information selected by the NAS layer and performs subsequent access network selection.

Fig. 6 shows a hierarchical diagram of network selection by a terminal.

Further, in order to improve the communication performance of the terminal accessing the network, the NAS layer of the terminal may select the target network identification information with a higher priority or a highest priority according to the priority of the network identification information. For example, the NAS layer of the terminal selects, according to the priority of the network ID stored in the user control list or the operator control list configured on the USIM, target network identification information with the highest priority from the network IDs reported by the AS layer of the terminal, and feeds back the target network identification information to the AS layer.

Optionally, the second network identification information is updated.

In case of subscription or network configuration change, the operator may update the second network identification information stored in the terminal by means of OTA (Over-the-Air Technology). Specifically, the operator updates the user control list and the operator control list stored in the USIM of the terminal in an OTA manner.

In the embodiment of the invention, the terminal can modify the network selection priority by using the target modification parameter and select the network by using the cell re-target priority obtained after modification. Therefore, the terminal can reselect the target cell more flexibly, the target cell reselected by the terminal can better adapt to the requirement of the terminal, and the communication performance of the terminal is improved.

In order to better understand the technical scheme of selecting the access network by the terminal, the following embodiments are respectively described in detail in which the terminal selects the access network according to the network ID and the access technologies, and in which the terminal selects the access network according to the PLMN ID, the network ID, and the access technologies.

The first embodiment is as follows: the terminal selects an access network according to the network ID and the access technologies.

Fig. 3 is a flowchart of another network selection method according to an embodiment of the present invention. As shown in fig. 3, the network selection method, applied to a terminal, includes the following steps:

step 2011: receiving a broadcast message from network side equipment, wherein the broadcast message carries first network identification information and first access technology information;

step 2021: and selecting an access network according to the first network identification information, the first access technology information, and second network identification information and second access technology information which are pre-stored in the terminal.

Optionally, the selecting an access network according to the first network identification information, the first access technology information, and second network identification information and second access technology information pre-stored in the terminal includes:

the access layer of the terminal reports the first network identification information and the first access technology information to a non-access layer of the terminal;

the non-access layer selects target network identification information and target access technology information which are matched with the second network identification information and the second access technology information from the first network identification information and the first access technology information, and informs the access layer of the target network identification information and the target access technology information;

and the access layer selects an access network based on the target network identification information and the target access technology information.

Example two: and the terminal selects an access network according to the PLMN ID, the network ID and the access technologies.

Fig. 4 is a flowchart of another network selection method according to an embodiment of the present invention. As shown in fig. 4, the network selection method, applied to a terminal, includes the following steps:

step 2012: receiving a broadcast message from a network side device, wherein the broadcast message carries first PLMN identification information, first network identification information and first access technology information;

step 2022: and selecting an access network according to the first PLMN identification information, the first network identification information, the first access technology information, and second PLMN identification information, second network identification information and second access technology information which are pre-stored in the terminal.

Optionally, the selecting an access network according to the first PLMN identification information, the first network identification information, the first access technology information, and second PLMN identification information, second network identification information, and second access technology information pre-stored in the terminal includes:

the access layer of the terminal reports the first PLMN identification information, the first network identification information and the first access technology information to a non-access layer of the terminal;

the non-access stratum selects target PLMN identification information, target network identification information and target access technology information which are matched with the second PLMN identification information, the second network identification information and the second access technology information from the first PLMN identification information, the first network identification information and the first access technology information, and notifies the target PLMN identification information, the target network identification information and the target access technology information to the access stratum;

and the access layer selects an access network based on the target PLMN identification information, the target network identification information and the target access technology information.

Further, in order to improve the communication performance of the terminal accessing the network, the NAS layer of the terminal may select the target PLMN identification information and the target network identification information with a higher priority or a highest priority according to the priority of the PLMN identification information and the network identification information. For example, the NAS layer of the terminal selects, according to the PLMN ID and the priority of the network ID stored in the user control list or the operator control list configured on the USIM, target PLMN identification information and target network identification information with the highest priority from the network IDs reported by the AS layer of the terminal, and feeds back the target PLMN identification information and the target network identification information to the AS layer.

It should be noted that, if the PLMN ID in the current cell broadcast message and the network ID do not match any PLMN ID in the data file of the USIM, it is indicated that the current network is not a network to which the terminal can access.

Even if the terminal selects a network under a PLMN to initiate a registration request, the AMF (Access and Mobility Management Function) determines that the terminal is not authorized to Access the network according to the subscription information obtained from the UDM (Unified Data Management Function), and informs the terminal of the rejection message and the cause value in the rejection message.

The cause value may be an existing cause value "PLMN not allowed", and the terminal may store the current PLMN ID and the network ID in a PLMN barred list (forbidden PLMN list). The terminal does not subsequently attempt to access the PLMN ID and the network ID.

The cause value may also be a new cause value "5 wlan network not allowed", and the terminal may store the current PLMN ID and network ID in a network forbidden list (forbidden network list). The terminal does not subsequently attempt to access the PLMN ID and the network ID.

Therefore, the embodiment solves the problem of type-a and type-b network selection in the 5G LAN, and can meet the requirements of accessing the type-a network and the public PLMN through the type-a network terminal and the type-b network terminal.

Fig. 5 is a flowchart of a network indication method according to an embodiment of the present invention. As shown in fig. 5, the network indication method, applied to the network side device, includes the following steps:

step 301: sending a broadcast message to a terminal, wherein the broadcast message at least carries first network identification information; the first network identification information and second network identification information pre-stored in the terminal are used for assisting the terminal in selecting an access network.

Optionally, the broadcast message further carries first access technology information;

the first network identification information, the first access technology information, and second network identification information and second access technology information pre-stored in the terminal are used for assisting the terminal in selecting an access network.

Optionally, the broadcast message further carries first public land mobile network PLMN identification information;

the first PLMN identification information, the first network identification information, the first access technology information, and second PLMN identification information, second network identification information, and second access technology information pre-stored in the terminal are used to assist the terminal in selecting an access network.

Optionally, the first network identification information includes at least one of:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

Optionally, the first network identification information is in at least one of the following manners:

a local area network identifier specified based on a protocol;

slice identification S-NSSAI;

and the network type identifier is customized by an operator.

Optionally, the method further includes:

and when the first network identification information is not matched with the second network identification information, if the terminal selects an access network according to the first network identification information, sending a rejection message to the terminal.

And if the PLMN ID in the current cell broadcast message and the network ID are not matched with any PLMN ID in the data file of the USIM, indicating that the current network is not a network which can be accessed by the terminal.

Even if the terminal selects a network under a PLMN to initiate a registration request, the AMF judges that the terminal has no right to access the network according to the subscription information acquired from the UDM, and informs the terminal through a rejection message and a cause value in the rejection message.

It should be noted that, as an embodiment of the network-side device corresponding to the embodiments shown in fig. 2 to fig. 4, specific implementation manners of the embodiment of the present invention may refer to relevant descriptions of the embodiments shown in fig. 2 to fig. 4, and the same beneficial effects can be achieved, and details are not repeated here to avoid repeated descriptions.

Fig. 7 is a structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 7, the terminal 400 includes:

a receiving module 401, configured to receive a broadcast message from a network side device, where the broadcast message at least carries first network identification information;

a selecting module 402, configured to select an access network at least according to the first network identification information and second network identification information pre-stored in the terminal.

Here, the receiving module 401 in the terminal 400 may be understood AS an AS layer shown in fig. 6; the selection module 402 can be understood as the NAS layer shown in fig. 6.

the selecting module 402 is specifically configured to:

and selecting an access network at least according to the first network identification information, the first access technology information, and second network identification information and second access technology information which are pre-stored in the terminal.

the selecting module 402 is specifically configured to:

and selecting an access network according to the first PLMN identification information, the first network identification information, the first access technology information, and second PLMN identification information, second network identification information and second access technology information which are pre-stored in the terminal.

Optionally, the second network identification information includes at least one of:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

Optionally, the second network identification information is in at least one of the following manners:

a local area network identifier specified based on a protocol;

slice identification S-NSSAI;

and the network type identifier is customized by an operator.

Optionally, the selecting module 402 is specifically configured to:

Optionally, the second PLMN identification information, the second network identification information, and the second access technology information are pre-stored in a universal subscriber identity module USIM of the terminal.

Optionally, the data file of the USIM includes at least one of a user control list and an operator control list;

the second PLMN identification information, the second network identification information and the second access technology information are pre-stored in the user control list; and/or the presence of a gas in the gas,

the second PLMN identification information, the second network identification information, and the second access technology information are pre-stored in the operator control list.

Optionally, when the data file of the USIM includes the user control list and the operator control list, the second PLMN identification information, the second network identification information, and the second access technology information stored in the user control list are preferentially used.

Optionally, as shown in fig. 8, the terminal 400 further includes:

an updating module 403, configured to update the second network identification information.

Here, the renewal module 403 in the terminal 400 can be understood as a USIM shown in fig. 6.

It should be noted that, in the embodiment of the present invention, the terminal 400 may be a terminal in any implementation manner in the method embodiment, and any implementation manner of the terminal in the method embodiment may be implemented by the terminal 400 in the embodiment of the present invention, and the same beneficial effects are achieved, and in order to avoid repetition, details are not described here again.

Fig. 9 is a block diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 9, the network-side device 500 includes:

a first sending module 501, configured to send a broadcast message to a terminal, where the broadcast message at least carries first network identification information;

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

a local area network identifier specified based on a protocol;

slice identification S-NSSAI;

and the network type identifier is customized by an operator.

Optionally, as shown in fig. 10, the network-side device 500 further includes:

a second sending module 502, configured to send a rejection message to the terminal if the terminal selects an access network according to the first network identification information and sends a registration message when the first network identification information is not matched with the second network identification information.

It should be noted that, in the embodiment of the present invention, the network side device 500 may be a network side device in any implementation manner in the method embodiment, and any implementation manner of the network side device in the method embodiment may be implemented by the network side device 500 in the embodiment of the present invention, and the same beneficial effects are achieved, and in order to avoid repetition, details are not described here again.

Fig. 11 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention, where the terminal 600 includes, but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, a processor 610, and a power supply 611. Those skilled in the art will appreciate that the terminal structure shown in fig. 11 does not constitute a limitation of the terminal, and that the terminal may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

Wherein, the processor 610 is configured to:

the step of selecting an access network according to at least the first network identification information and the second network identification information pre-stored in the terminal, which is executed by the processor 610, includes:

the step of selecting an access network according to at least the first network identification information, the first access technology information, and the second network identification information and the second access technology information pre-stored in the terminal, executed by the processor 610, includes:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

a local area network identifier specified based on a protocol;

slice identification S-NSSAI;

and the network type identifier is customized by an operator.

Optionally, when the processor 610 executes the step of selecting an access network according to at least the first network identification information and second network identification information pre-stored in the terminal, the step includes:

Optionally, when the processor 610 executes the step of selecting an access network according to at least the first network identification information, the first access technology information, and the second network identification information and the second access technology information pre-stored in the terminal, the step includes:

Optionally, when the processor 610 executes the step of selecting an access network according to the first PLMN identification information, the first network identification information, the first access technology information, and the second PLMN identification information, the second network identification information, and the second access technology information pre-stored in the terminal, the step includes:

Optionally, the processor 610 is further configured to:

and updating the second network identification information.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 601 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 610; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 601 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 601 may also communicate with a network and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 602, such as helping the user send and receive e-mails, browse web pages, and access streaming media.

The audio output unit 603 may convert audio data received by the radio frequency unit 601 or the network module 602 or stored in the memory 609 into an audio signal and output as sound. Also, the audio output unit 603 can also provide audio output related to a specific function performed by the terminal 600 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 603 includes a speaker, a buzzer, a receiver, and the like.

The input unit 604 is used to receive audio or video signals. The input Unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042, and the Graphics processor 6041 processes image data of a still picture or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 606. The image frames processed by the graphic processor 6041 may be stored in the memory 609 (or other storage medium) or transmitted via the radio frequency unit 601 or the network module 602. The microphone 6042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 601 in case of the phone call mode.

The terminal 600 also includes at least one sensor 605, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 6061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 6061 and the backlight when the terminal 600 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 605 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 606 is used to display information input by the user or information provided to the user. The Display unit 606 may include a Display panel 6061, and the Display panel 6061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 607 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 607 includes a touch panel 6071 and other input devices 6072. Touch panel 6071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 6071 using a finger, stylus, or any suitable object or accessory). The touch panel 6071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 610, receives a command from the processor 610, and executes the command. In addition, the touch panel 6071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 607 may include other input devices 6072 in addition to the touch panel 6071. Specifically, the other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 6071 can be overlaid on the display panel 6061, and when the touch panel 6071 detects a touch operation on or near the touch panel 6071, the touch operation is transmitted to the processor 610 to determine the type of the touch event, and then the processor 610 provides a corresponding visual output on the display panel 6061 according to the type of the touch event. Although in fig. 11, the touch panel 6071 and the display panel 6061 are two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 6071 and the display panel 6061 may be integrated to implement the input and output functions of the terminal, and this is not limited here.

The interface unit 608 is an interface for connecting an external device to the terminal 600. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 608 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 600 or may be used to transmit data between the terminal 600 and an external device.

The memory 609 may be used to store software programs as well as various data. The memory 609 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 609 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 610 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by running or executing software programs and modules stored in the memory 609 and calling data stored in the memory 609, thereby performing overall monitoring of the terminal. Processor 610 may include one or more processing units; preferably, the processor 610 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 610.

The terminal 600 may further include a power supply 611 (e.g., a battery) for supplying power to the various components, and preferably, the power supply 611 is logically connected to the processor 610 via a power management system, so that functions of managing charging, discharging, and power consumption are performed via the power management system.

In addition, the terminal 600 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, which includes a processor 610, a memory 609, and a computer program stored in the memory 609 and capable of running on the processor 610, where the computer program, when executed by the processor 610, implements each process of the above-mentioned network selection method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Fig. 12 is a block diagram of another network-side device according to an embodiment of the present invention. As shown in fig. 12, the network-side device 800 includes: a processor 801, a transceiver 802, a memory 803, and a bus interface, wherein:

the transceiver 802 is configured to:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

a local area network identifier specified based on a protocol;

slice identification S-NSSAI;

and the network type identifier is customized by an operator.

Optionally, the transceiver 802 is further configured to:

In FIG. 12, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 801, and various circuits, represented by the memory 803, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 804 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.

It should be noted that, in this embodiment, the network-side device 800 may be a network-side device according to any implementation manner in the method embodiment of the present invention, and any implementation manner of the network-side device in the method embodiment of the present invention may be implemented by the network-side device 800 in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned network selection method embodiment corresponding to a network-side device or a terminal, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention 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 invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A network selection method is applied to a terminal, and is characterized in that the method comprises the following steps:

selecting an access network at least according to the first network identification information and second network identification information prestored in the terminal;

the access network selected by the terminal is a private communication network in a third generation partnership project (3 GPP) network system; wherein the private communication network is a type A network or a type B network, the type A network is a 3GPP network not used for the public, the type A network supports service continuity or roaming with an operator network, and the type B network is an isolated 3GPP network not interacting with the operator network;

the second network identification information includes at least one of:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

the selecting an access network according to at least the first network identification information and second network identification information pre-stored in the terminal includes:

2. The method of claim 1, wherein the broadcast message further carries first access technology information;

3. The method of claim 2, wherein the broadcast message further carries first Public Land Mobile Network (PLMN) identification information;

the selecting an access network at least according to the first network identification information, the first access technology information, and second network identification information and second access technology information pre-stored in the terminal includes:

4. The method of claim 1, wherein the second network identification information is at least one of:

a local area network identifier specified based on a protocol;

slice identification S-NSSAI;

and the network type identifier is customized by an operator.

5. The method of claim 2, wherein selecting the access network based on at least the first network identification information, the first access technology information, and second network identification information and second access technology information pre-stored in the terminal comprises:

6. The method of claim 3, wherein the selecting an access network according to the first PLMN identification information, the first network identification information, the first access technology information, and second PLMN identification information, second network identification information, and second access technology information pre-stored in the terminal comprises:

7. The method of claim 3, wherein the second PLMN identification information, the second network identification information, and the second access technology information are pre-stored in a Universal subscriber identity card (USIM) of the terminal.

8. The method of claim 7, wherein the data file of the USIM comprises at least one of a user control list and an operator control list;

9. The method of claim 8, wherein the second PLMN identification information, the second network identification information, and the second access technology information stored in the subscriber control list are preferentially used when a data file of the USIM includes the subscriber control list and the operator control list.

10. The method of claim 1, further comprising:

and updating the second network identification information.

11. A network indication method is applied to network side equipment, and is characterized in that the method comprises the following steps:

sending a broadcast message to a terminal, wherein the broadcast message at least carries first network identification information, so that the terminal selects an access network at least according to the first network identification information and second network identification information prestored in the terminal;

the first network identification information includes at least one of:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

wherein, the terminal selects an access network at least according to the first network identification information and second network identification information pre-stored in the terminal, and the method comprises the following steps:

12. The method of claim 11, wherein the broadcast message further carries first access technology information;

13. The method of claim 12, wherein the broadcast message further carries first Public Land Mobile Network (PLMN) identification information;

14. The method of claim 11, wherein the first network identification information is at least one of:

a local area network identifier specified based on a protocol;

slice identification S-NSSAI;

and the network type identifier is customized by an operator.

15. The method of claim 11, further comprising:

and when the first network identification information is not matched with the second network identification information, if the terminal selects an access network according to the first network identification information and sends a registration message, sending a rejection message to the terminal.

16. A terminal, comprising:

the selection module is used for selecting an access network at least according to the first network identification information and second network identification information prestored in the terminal;

the second network identification information includes at least one of:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

the selection module is specifically configured to:

17. The terminal of claim 16, wherein the broadcast message further carries first access technology information;

the selection module is specifically configured to:

18. The terminal of claim 17, wherein the broadcast message further carries first Public Land Mobile Network (PLMN) identification information;

the selection module is specifically configured to:

and selecting an access network according to the first PLMN identification information, the first network identification information, the first access technology information, and second network identification information, second PLMN identification information and second access technology information which are pre-stored in the terminal.

19. The terminal of claim 17, wherein the selection module is specifically configured to:

20. The terminal of claim 18, wherein the selection module is specifically configured to:

21. The terminal of claim 16, further comprising:

and the updating module is used for updating the second network identification information.

22. A network-side device, comprising:

the first sending module is used for sending a broadcast message to a terminal, wherein the broadcast message at least carries first network identification information, so that the terminal selects an access network at least according to the first network identification information and second network identification information prestored in the terminal; the access network selected by the terminal is a private communication network in a third generation partnership project (3 GPP) network system; wherein the private communication network is a type A network or a type B network, the type A network is a 3GPP network not used for the public, the type A network supports service continuity or roaming with an operator network, and the type B network is an isolated 3GPP network not interacting with the operator network;

the first network identification information includes at least one of:

network identification information corresponding to the type A network;

network identification information corresponding to the type B network;

23. The network-side device of claim 22, wherein the broadcast message further carries first access technology information;

24. The network-side device of claim 23, wherein the broadcast message further carries first public land mobile network PLMN identification information;

25. The network-side device of claim 23, further comprising:

and the second sending module is used for sending a rejection message to the terminal if the terminal selects an access network according to the first network identification information and sends a registration message when the first network identification information is not matched with the second network identification information.

26. A terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps in the network selection method according to any one of claims 1 to 10.

27. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the network indication method of any of claims 11 to 15.

28. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the network selection method according to any one of claims 1 to 10; or, implementing the steps of the network indication method according to any of claims 11 to 15.