WO2021005759A1

WO2021005759A1 - Terminal and communication method

Info

Publication number: WO2021005759A1
Application number: PCT/JP2019/027397
Authority: WO
Inventors: 高橋　秀明; 淳巳之口; 健一郎青▲柳▼
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2021-01-14

Abstract

Provided is a terminal comprising: a reception unit that receives an identifier for a dedicated core network (DCN) when connected to a corresponding DCN; and a control unit that determines whether or not DCN access regulation information for each public land mobile network (PLMN), which includes information corresponding to the PLMN selected by an upper layer, is included in notification information, wherein the control unit executes an access regulation operation on the basis of the DCN access regulation information for each PLMN.

Description

Terminal and communication method

The present invention relates to a terminal and a communication method.

Currently, the spread of mobile phones and smartphones is expanding. With the increase in the use of mobile phones and smartphones, there is a risk that resources in base stations (eNB: evolved NodeB) and core networks will become tight due to simultaneous transmission from terminals (user devices), causing congestion. For this reason, in the LTE (Long Term Evolution) network, regulatory control for regulating access requests from terminals (user devices) has been introduced.

In the regulatory control called ACB (Access Class Barring), an access class (AC: Access Class) is assigned to all user devices in the base station, and a connection request signal is transmitted from the terminal based on the access class. Be controlled. For example, the base station transmits the access class subject to regulation control and the regulation control parameters (regulation rate, regulation time, etc.) to the user device as notification information (SIB2: System Information Block 2). Upon receiving the notification information, the user device determines whether or not it is subject to regulatory control, and if it is subject to regulatory control, does not request a connection from the base station (see Non-Patent Document 1).

A dedicated core network (Core Network (CN)) is prepared according to the type and contract of the terminal, and when the RRC connection (RRC connection) is established, the Defined Core Network (DCN) is connected to the CN according to the terminal type and contract. The mechanism is defined for EPC (Evolved Packet Core).

For the DCN corresponding to the terminal, the DCN identifier (DCN ID) is set according to the terminal type and contract.

When the terminal receives the DCN ID from the upper layer (eg NAS (Non-Access Stratum)), when sending the RRC connection setup completion message (RRC connection set up complete message, that is, Msg.5), the DCN Include the ID in the RRC connection setup complete message.

Such a DCN mechanism is defined for LTE or NB-IoT (Narrow Band-Internet of Things).

Here, assume a scenario composed of the following (1), (2), (3), and (4).
(1) The NB-IoT terminal is connected to a CN (EPC) dedicated to IoT, which is different from the conventional LTE terminal.
(2) An LTE terminal that is not for IoT (eg,

LTE categories

1, 2, etc.) is connected to an existing CN (EPC).
(3) The eMTC (enhanced Machine Type Communication) terminal (eg, categories M1 and M2) can be connected to both an existing EPC and an IoT-dedicated EPC.
(4) The eNB is connected to both the existing EPC and the EPC dedicated to IoT.

In the scenario composed of the above (1), (2), (3), and (4), there are the following problems (A) and (B).
(A) When the existing EPC is congested, the eMTC terminal connected to the EPC dedicated to IoT is also restricted.
(B) Even if the EPC dedicated to IoT is congested, the eMTC terminal connected to the dedicated EPC is not restricted.

The problems of (A) and (B) are caused by the fact that the conventional access regulation is performed for each terminal or service, and the access regulation cannot be enforced for each connected CN.

The present invention has been made in view of the above points, and an object of the present invention is to provide a technique for defining a mechanism for restricting access for each DCN supported by a terminal.

According to the disclosed technology, information corresponding to a receiving unit that receives the identifier of the DCN when connected to the corresponding dedicated core network (DCN) and PLMN (Public Land Mobile Network) selected by the upper layer. The control unit includes a control unit for determining whether or not the DCN access regulation information for each PLMN including the above is included in the broadcast information, and the control unit accesses based on the DCN access regulation information for each PLMN. A terminal is provided that performs regulatory actions.

According to the present invention, there is provided a technique for defining a mechanism for restricting access for each DCN supported by the terminal.

It is a figure for demonstrating the wireless communication system in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a flowchart corresponding to FIG. 2A. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a flowchart corresponding to FIG. 3A. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a flowchart corresponding to FIG. 4A. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a flowchart corresponding to FIG. 5A. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the regulation of the terminal operation in embodiment of this invention. It is a figure which shows an example of the functional structure of the base station apparatus 10 in embodiment of this invention. It is a figure which shows an example of the functional structure of the terminal 20 in embodiment of this invention. It is a figure which shows an example of the hardware composition of the base station apparatus 10 or the terminal 20 in embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. The wireless communication system according to the embodiment of the present invention includes a base station device 10 and a terminal (user device) 20 as shown in FIG. Although FIG. 1 shows one base station device 10 and one terminal 20, this is an example, and there may be a plurality of each.

The terminal 20 is a communication device having a wireless communication function such as an LTE terminal, an NB-IoT terminal, an eMTC terminal, a smartphone, a mobile phone, a tablet, a wearable terminal, and a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 is provided by a wireless communication system by receiving a control signal or data from the base station apparatus 10 in DL and transmitting the control signal or data to the base station apparatus 10 in UL. Use various communication services.

The NB-IoT terminal can be connected to a CN (EPC) dedicated to IoT, which is different from the conventional LTE terminal. LTE terminals that are not for IoT (eg,

LTE categories

1, 2, etc.) can connect to existing CNs (EPCs). The eMTC terminal (eg, categories M1, M2) may connect to both existing EPCs and IoT-only EPCs. The base station apparatus 10 can be connected to both an existing EPC and an EPC dedicated to IoT.

(Embodiment 1)
As the first embodiment of the present invention, it is conceivable to newly define ACB (Access Class Barring) for DCN from the viewpoint of the configuration of broadcast information and the method of defining terminal operation.

2A, 3A, 4A, 5A, 6-15 are diagrams showing an example of the regulation of terminal operation corresponding to the first embodiment of the present invention. 2B is a flowchart corresponding to FIG. 2A, FIG. 3B is a flowchart corresponding to FIG. 3A, FIG. 4B is a flowchart corresponding to FIG. 4A, and FIG. 5B is a flowchart corresponding to FIG. 5A. is there.

(Initiation)
As shown in FIG. 2A, the terminal 20 initiates the RRC connection establishment procedure. When the terminal 20 is not an NB-IoT terminal and the terminal 20 is connected to an existing CN (EPC), the following operations are executed.

As shown in FIG. 2B, in step S100, in step S100, the broadcast information SystemInformationBlockType2 includes the pcn-BarringPerPLMN-List, and the pcn-BarringPerPLMN-List corresponds to the PLMN (Public LandMobile) selected by the upper layer. It is determined whether DCN-BarringPerPLMN entry having plmn-Identity Index is included. When SystemInformationBlockType2 contains dcn-BarringPerPLMN-List and dcn-BarringPerPLMN-List contains DCN-BarringPerPLMN entry (YES in S100), the terminal 20 corresponds to a PLMN having a PLMN selected by the upper layer. The BarringPerPLMN entry is selected (S110). Then, in the following procedure, DCN barring check (confirmation of DCN regulation) is performed using the selected DCN-BarringPerPLMN entry regardless of the parameters of the pcn-BarringForComon included in the SystemInformationBlockType2 (S120). If NO in step S100, DCN barring check (confirmation of DCN regulation) is performed using the dcn-BarringForComon included in SystemInformationBlockType2 in the following procedure (S130).

Note that the names such as dcn-BarringPerPLMN-List, DCN-BarringPerPLMN entry, and DCNbarling are examples, and may be different names.

As shown in step S140 of FIGS. 3A and 3B, the terminal 20 determines whether the DCN-ID is received from the upper layer and the SystemInformationBlockType2 includes the DCN-BarringInfo for the received DCN-ID. .. When the DCN-ID is received from the upper layer and the SystemInformationBlockType2 includes the DCN-BarringInfo for the received DCN-ID (YES in step S140), the terminal 20 sets the timer T3XY to "Tbarring". It is used as a "timer used for control)", and an access restriction check is executed using a dcn-BarringConfig as a "DCN-barring parameter" (S150). The terminal 20 determines whether the access to the cell is restricted (S160), and if the access to the cell is restricted (YES in S160), the RRC connection establishment failure or the RRC connection restart is performed in the upper layer. Notify the failure, notify that the access restrictions for the DCN indicated by the DCN-ID can be applied, and end the sequence of steps (S170).

Note that the timer T3XY is a timer for preventing cell access for a predetermined time after the execution of access restriction. The names such as T3XY are examples and may be different names.

(NB-IoT)
As shown in FIGS. 4A and 4B, in step S200, in step S200, the terminal 20 which is an NB-IoT terminal has the parameter SystemInformationBlockType14-NB including the dcn-BarringPerPLMN-List, and the dcn-BarringPerPLMN-List is selected by the upper layer. It is determined whether the DCN-BarringPerPLMN entry having the plumn-Identity Index corresponding to the PLMN is included. When the SystemInformationBlockType 14 contains a pcn-BarringPerPLMN-List and the pcn-BarringPerPLMN-List contains a DCN-BarringPerPLMN entry (YES in S200), the terminal 20 corresponds to a PLMN having a PLMN selected by the upper layer. The BarringPerPLMN entry is selected (S210). Then, in the following procedure, the DCN barring check (confirmation of DCN regulation) is performed using the selected DCN-BarringPerPLMN entry regardless of the parameters of the pcn-BarringForCommon included in the SystemInformationBlockType14-NB (S220). If NO in step S100, DCN barring check (confirmation of DCN regulation) is performed using the dcn-BarringForComon included in SystemInformationBlockType14 in the following procedure (S230).

As shown in step S240 of FIGS. 5A and 5B, the terminal 20 which is an NB-IoT terminal has received the DCN-ID from the upper layer, and the System InformationBlockType 14-NB receives the DCN- for the DCN-ID. Determine if the Barring Info is included. When the DCN-ID is received from the upper layer and the SystemInformationBlockType14-NB includes the DCN-BarringInfo for the received DCN-ID (YES in step S240), the terminal 20 sets the timer T3XY to "Tbarring". , And the pcn-BarringConfig is used as the "DCN barring parameter" to execute the access restriction check (S250). The terminal 20 determines whether the access to the cell is restricted (S260), and if the access to the cell is restricted (YES in S260), the RRC connection establishment failure or the RRC connection restart is performed in the upper layer. It notifies the failure, notifies that the access regulation for DCN indicated by DCN-ID can be applied, and ends the series of procedures (S270).

FIG. 6 is a diagram showing an example of a regulation of terminal operation regarding cell reselection or cell selection during timer operation. As shown in FIG. 6, when cell reselection occurs during the operation of the timer T3XY, if the T3XY is operating and the terminal 20 is connected to the EPC, the terminal 20 stops the T3XY and FIG. Perform the operations in section 5.3.3.7 shown in.

As shown in FIG. 7, if the terminal 20 is connected to the EPC, the timer T302 has expired or stopped, and if the timer T3XY is not operating, the terminal 20 is a DCN supported by the terminal 20. Notify the upper layers of deregulation for.

As shown in FIG. 8, if the terminal 20 is connected to the EPC, the timer T3XY has expired or stopped, and if the timer T302 is not operating, the terminal 20 is a DCN supported by the terminal 20. Notify the upper layers of deregulation for.

(Access regulation check)
FIG. 9 is a diagram showing an example of a regulation of terminal operation regarding an access regulation check for DCN.

As shown in FIG. 9, the terminal 20 executes the following operations.
(1) If the timer T302 is operating, consider that access to the cell is restricted.
(2) If the timer T302 is not operating and the SystemInformationBlockType2 includes the "DCN barring parameter", a random number "rand" that is uniformly distributed in the range of 0 or more and 1 or less is subtracted (draw), and the subtracted random number is subtracted. If the random number is smaller than the value indicated by the ac-Barring Factor included in the "DCN barring parameter", it is considered that access to the cell is not restricted, and if it is not smaller than the value, the cell is not restricted. Consider that access to is restricted.
(3) If SystemInformationBlockType2 does not include the "DCN barring parameter", it is considered that access to the cell is not restricted.
(4) If access to the cell is restricted and the timer T302 is not operating, a random number "land" uniformly distributed in the range of 0 or more and 1 or less is subtracted (draw), and the "DCN barring parameter" is used. Start the timer "Tbarring" having the timer value calculated by the following formula using the ac-BarringTime included in.
"Tbarring" = (0.7 + 0.6 * land) * ac-BarringTime
(SystemInformationBlockType2)
10 and 11 are diagrams showing an example of the parameter SystemInformationBlockType2 that defines the terminal operation.

As shown in FIG. 10, SystemInformationBlockType2 may include dcn-BarringForCommon and dcn-BarringPerPLMN-List.

As shown in FIG. 11, the pcn-BarringPerPLMN-List may include plmn-IdentityIndex and dcn-BarringInfolist. In addition, the pcn-BarringForCommon may include a pcn-ID and a pcn-BarringConfig.

As shown in FIG. 12, the dbn-BarringForCommon is a parameter indicating the setting of regulations (Barring configuration) for DCN, and is applied to all PLMNs. Further, dcn-BarringPerPLMN-List is a parameter indicating the setting of regulation for DCN for each PLMN.

(SystemInformationBlockType14-NB)
FIG. 13 is a diagram showing an example of the parameter SystemInformationBlockType14-NB that defines the terminal operation.

As shown in FIG. 13, the SystemInformationBlockType14-NB may include dcn-BarringForCommon and dcn-BarringPerPLMN-List. In addition, the pcnn-BarringPerPLMN-List may include plmn-IdentityIndex and pcn-BarringInfolist. The dcn-BarringForCommon may include a dcn-ID and a dcn-BarringConfig.

As shown in FIG. 14, the dbn-BarringForCommon is a parameter indicating the setting of regulations (Barring configuration) for DCN, and is applied to all PLMNs. Further, dcn-BarringPerPLMN-List is a parameter indicating the setting of regulation for DCN for each PLMN.

(T3XY)
FIG. 15 is a diagram showing an example of a timer T3XY that defines terminal operation.

As shown in FIG. 15, T3XY is initiated when access is restricted during RRC connection establishment for a DCN supported by terminal 20. T3XY is stopped when the cell is reselected while shifting to the RRC connection state. Alternatively, T3XY is stopped upon receiving an RRCConceptionRelease for RRCEarlyDataComplete or UP-EDT. Upon expiration of T3XY, terminal 20 notifies the higher layers about the deregulation specified in Section 5.3.3.7.

(Embodiment 2)
As the second embodiment of the present invention, a perPLMNlist for DCN including an existing ACB (Access Class Barring) is newly defined from the viewpoint of the configuration of broadcast information and the method of defining the terminal operation, and depending on whether or not the DCN ID is supported, It is conceivable to apply individual ACBs.

16-21 is a diagram showing an example of a regulation of terminal operation corresponding to the second embodiment of the present invention.

As shown in FIG. 16, the terminal 20 starts the RRC connection establishment procedure. When the terminal 20 is not an NB-IoT terminal and the terminal 20 is connected to an existing CN (EPC), the following operations are executed.

As shown in FIG. 16, in the terminal 20, the broadcast information SystemInformationBlockType2 includes ac-BarringPerDcnPerPLMN-List, and ac-BarringPerDcnPerPLMN-List corresponds to PLMN and DCN selected by the upper layer. It is determined whether or not the AC-BarringPerDcnPerPLMN entry having the ID is included. When SystemInformationBlockType2 contains ac-BarringPerDcnPerPLMN-List and ac-BarringPerDcnPerPLMN-List contains AC-BarringPerDcnPerPLMN, the terminal 20 corresponds to PLMNs and IDns selected by the upper layer. Select AC-BarringPerDcnPerPLMN entry. Then, in the following procedure, the selected AC-BarringPerDcnPerPLMN entry is used regardless of the PLMN-specific common access regulation parameters included in the SystemInformationBlockType2 and the common access regulation parameters included in the SystemInformationBlockType2.

(NB-IoT)
As shown in FIG. 17, in the terminal 20, which is an NB-IoT terminal, the parameter SystemInformationBlockType14-NB includes ac-BarringPerDcnPerPLMN-List, and ac-BarringPerDcnPerPLMN-List corresponds to PLMN and DCN selected by the upper layer. It is determined whether the AC-BarringPerDcnPerPLMN entry having the plumn-Identity Index and the pcn-ID is included. When SystemInformationBlockType14 contains ac-BarringPerDcnPerPLMN-List and ac-BarringPerDcnPerPLMN-List contains AC-BarringPerDcnPerPLMN entry, the terminal 20 has an Ind-Indindex selected by the upper layer. The AC-BarringPerDcnPerPLMN entry to have is selected. Then, in the following procedure, the selected AC-BarringPerDcnPerPLMN entry is used regardless of the PLMN-specific common access regulation parameter included in the SystemInformationBlockType14-NB and regardless of the common access regulation parameter included in the SystemInformationBlockType14-NB.

(SystemInformationBlockType2)
FIG. 18, FIG. 19, and FIG. 20 are diagrams showing an example of the parameter SystemInformationBlockType2 that defines the terminal operation.

Parameters such as ac-BarringForEmergency, ac-BarringForMo-signaling, ac-BarringForMo-Data shown in (1) of FIG. 18, and ssac-BarringForMMTEL-Voice, sac-BarringF -Parameters such as Video correspond to the common access regulation parameters included in the above-mentioned SystemInformationBlockType2.

(Device configuration)
Next, a functional configuration example of the base station apparatus 10 and the terminal 20 that execute the processes and operations described so far will be described. The base station apparatus 10 and the terminal 20 include a function of carrying out the above-described embodiment. However, the base station apparatus 10 and the terminal 20 may each have only a part of the functions in the embodiment.

<Base station device 10>
FIG. 22 is a diagram showing an example of the functional configuration of the base station device 10. As shown in FIG. 22, the base station apparatus 10 includes a transmission unit 110, a reception unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in FIG. 22 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.

The transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. The receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring information of, for example, a higher layer from the received signals.

The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads the setting information from the storage device as needed. The content of the setting information is, for example, information related to the measurement of the terminal 20 and the like.

The control unit 140 performs a process of generating measurement settings of the terminal 20. Further, the control unit 140 performs communication control based on the measurement report acquired from the terminal 20. The function unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the function unit related to signal reception in the control unit 140 may be included in the reception unit 120.

<Terminal 20>
FIG. 23 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. 23, the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in FIG. 23 is only an example. Any function classification and name of the functional unit may be used as long as the operation according to the embodiment of the present invention can be executed.

The transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and acquires a signal of a higher layer from the received signal of the physical layer. Further, the receiving unit 220 has a function of receiving a DL / UL control signal or the like transmitted from the base station apparatus 10.

The setting unit 230 stores various setting information received from the base station device 10 by the receiving unit 220 in the storage device, and reads it out from the storage device as needed. The setting unit 230 also stores preset setting information. The content of the setting information is, for example, information related to the measurement of the terminal 20 and the like.

As described in the embodiment, the control unit 240 executes the measurement based on the measurement settings acquired from the base station apparatus 10. Further, the control unit 240 reports the measurement result to the base station apparatus 10. The function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.

(Hardware configuration)
The block diagrams (FIGS. 22 and 23) used in the description of the above-described embodiment show blocks of functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Further, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device that is physically or logically connected, or directly or indirectly (for example, by using two or more physically or logically separated devices). , Wired, wireless, etc.) and may be realized using these plurality of devices. The functional block may be realized by combining the software with the one device or the plurality of devices.

Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. There are broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but only these. I can't. For example, a functional block (constituent unit) that functions transmission is called a transmitting unit (transmitting unit) or a transmitter (transmitter). As described above, the method of realizing each of them is not particularly limited.

For example, the base station device 10, the terminal 20, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. FIG. 24 is a diagram showing an example of the hardware configuration of the base station device 10 and the terminal 20 according to the embodiment of the present disclosure. The above-mentioned base station device 10 and terminal 20 are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. You may.

In the following explanation, the word "device" can be read as a circuit, device, unit, etc. The hardware configuration of the base station device 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.

For each function of the base station device 10 and the terminal 20, the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the storage device 1002, and controls the communication by the communication device 1004. It is realized by controlling at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.

The processor 1001 operates, for example, an operating system to control the entire computer. The processor 1001 may be composed of a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic unit, a register, and the like. For example, the above-mentioned control unit 140, control unit 240, and the like may be realized by the processor 1001.

Further, the processor 1001 reads a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes according to these. As the program, a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used. For example, the control unit 140 of the base station device 10 shown in FIG. 22 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Further, for example, the control unit 240 of the terminal 20 shown in FIG. 23 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-mentioned various processes have been described as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. Processor 1001 may be implemented by one or more chips. The program may be transmitted from the network via a telecommunication line.

The storage device 1002 is a computer-readable recording medium, for example, by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. It may be configured. The storage device 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like. The storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement the communication method according to the embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, and is, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, Blu). -It may be composed of at least one of a ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, and the like. The auxiliary storage device 1003 may be referred to as an auxiliary storage device. The storage medium described above may be, for example, a database, server or other suitable medium containing at least one of the storage device 1002 and the auxiliary storage device 1003.

The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like. The communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). It may be composed of. For example, the transmission / reception antenna, the amplifier unit, the transmission / reception unit, the transmission line interface, and the like may be realized by the communication device 1004. The transmission / reception unit may be physically or logically separated from each other in the transmission unit and the reception unit.

The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives an input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).

Further, each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.

Further, the base station device 10 and the terminal 20 are hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include hardware, and a part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardware.

(Summary of Embodiment)
As described above, according to the embodiment of the present invention, the receiving unit that receives the identifier of the DCN when connected to the corresponding dedicated core network (DCN) and the PLMN (PLMN) selected by the upper layer. The control unit includes a control unit for determining whether or not the DCN access regulation information for each PLMN including the information corresponding to the Public Land Mobile Network) is included in the broadcast information, and the control unit includes the DCN for each PLMN. A terminal is provided that executes an access regulation operation based on the access regulation information.

With the above configuration, it is possible to provide a technique for defining a mechanism for restricting access for each DCN supported by the terminal 20.

(Supplement to the embodiment)
Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art can understand various modifications, modifications, alternatives, substitutions, and the like. There will be. Although explanations have been given using specific numerical examples in order to promote understanding of the invention, these numerical values are merely examples and any appropriate value may be used unless otherwise specified. The classification of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be used in combination with another item. It may be applied (as long as there is no contradiction) to the matters described in. The boundary of the functional unit or the processing unit in the functional block diagram does not always correspond to the boundary of the physical component. The operation of the plurality of functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by a plurality of components. With respect to the processing procedure described in the embodiment, the order of processing may be changed as long as there is no contradiction. For convenience of processing description, the base station apparatus 10 and the terminal 20 have been described using a functional block diagram, but such an apparatus may be realized by hardware, software, or a combination thereof. The software operated by the processor of the base station apparatus 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are random access memory (RAM), flash memory, and read-only, respectively. It may be stored in a memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

Further, the notification of information is not limited to the mode / embodiment described in the present disclosure, and may be performed by using another method. For example, information notification includes physical layer signaling (for example, DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, etc. Broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof may be used. RRC signaling may be referred to as an RRC message, for example, RRC. It may be a connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.

Each aspect / embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), and 5G (5th generation mobile communication). system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)) )), LTE 802.16 (WiMAX®), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth®, and other systems that utilize suitable systems and have been extended based on these. It may be applied to at least one of the next generation systems. Further, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).

The order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present specification may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.

In some cases, the specific operation performed by the base station apparatus 10 in the present specification may be performed by its upper node (upper node). In a network consisting of one or more network nodes having a base station device 10, various operations performed for communication with the terminal 20 include the base station device 10 and other than the base station device 10. It is clear that it can be done by at least one of the network nodes (eg, MME or S-GW, etc., but not limited to these). In the above, the case where there is one network node other than the base station apparatus 10 has been illustrated, but the other network nodes may be a combination of a plurality of other network nodes (for example, MME and S-GW). Good.

The information, signals, etc. described in the present disclosure can be output from the upper layer (or lower layer) to the lower layer (or upper layer). Input / output may be performed via a plurality of network nodes.

The input / output information and the like may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information and the like can be overwritten, updated, or added. The output information and the like may be deleted. The input information or the like may be transmitted to another device.

The determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example). , Comparison with a predetermined value).

Software is an instruction, instruction set, code, code segment, program code, program, subprogram, software module, whether called software, firmware, middleware, microcode, hardware description language, or another name. , Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted to mean.

In addition, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, a website that uses at least one of wired technology (coaxial cable, fiber optic cable, twist pair, digital subscriber line (DSL: Digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server, or other remote source, at least one of these wired and wireless technologies is included within the definition of transmission medium.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.

Note that the terms explained in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Also, the signal may be a message. Further, the component carrier (CC: Component Carrier) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.

The terms "system" and "network" used in this disclosure are used interchangeably.

In addition, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented. For example, the radio resource may be one indicated by an index.

The names used for the above parameters are not limited in any respect. Further, mathematical formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (eg, PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are in any respect limited names. is not.

In this disclosure, "base station (BS: Base Station)", "wireless base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB" (GNB) ”,“ access point ”,“ transmission point (transmission point) ”,“ reception point ”,“ transmission / reception point (transmission / reception point) ”,“ cell ”,“ sector ”, Terms such as "cell group," "carrier," and "component carrier" can be used interchangeably. Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.

The base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH:)). Communication services can also be provided by (Remote Radio Head). The term "cell" or "sector" is a part or all of the coverage area of at least one of the base station and the base station subsystem that provides the communication service in this coverage. Point to.

In the present disclosure, terms such as "mobile station (MS: Mobile Station)", "user terminal", "user device (UE: User Equipment)", and "terminal" may be used interchangeably. ..

Mobile stations can be subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless, depending on the trader. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be. It should be noted that at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

The terms "determining" and "determining" used in this disclosure may include a wide variety of actions. "Judgment" and "decision" are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as "judgment" or "decision". Also, "judgment" and "decision" are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. (Accessing) (for example, accessing data in memory) may be regarded as "judgment" or "decision". In addition, "judgment" and "decision" mean that "resolving", "selecting", "choosing", "establishing", "comparing", etc. are regarded as "judgment" and "decision". Can include. That is, "judgment" and "decision" may include that some action is regarded as "judgment" and "decision". Further, "judgment (decision)" may be read as "assuming", "expecting", "considering" and the like.

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two "connected" or "combined" elements. The connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access". As used in the present disclosure, the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be "connected" or "coupled" to each other using electromagnetic energies having wavelengths in the microwave and light (both visible and invisible) regions.

The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot (Pilot) depending on the applicable standard.

The phrase "based on" as used in this disclosure does not mean "based on" unless otherwise stated. In other words, the statement "based on" means both "based only" and "at least based on".

Any reference to elements using designations such as "first", "second", etc. as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted, or that the first element must somehow precede the second element.

The "means" in the configuration of each of the above devices may be replaced with "part", "circuit", "device" and the like.

When "include", "including" and variations thereof are used in the present disclosure, these terms are as comprehensive as the term "comprising". Is intended. Furthermore, the term "or" used in the present disclosure is intended not to be an exclusive OR.

In the present disclosure, if articles are added by translation, for example, a, an and the in English, the disclosure may include that the nouns following these articles are in the plural.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other". The term may mean that "A and B are different from C". Terms such as "separate" and "combined" may be interpreted in the same way as "different".

Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched with execution. Further, the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is implicitly (for example, the notification of the predetermined information is not performed). May be good.

Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure may be implemented as an amendment or modification without departing from the purpose and scope of the present disclosure, which is determined by the description of the scope of claims. Therefore, the description of this disclosure is for purposes of illustration only and does not have any restrictive meaning to this disclosure.

10 Base station device 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 User device 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

Claims

A receiver that receives the DCN identifier when connected to the corresponding dedicated core network (DCN), and
A control unit for determining whether or not DCN access regulation information for each PLMN is included in the broadcast information, including information corresponding to the PLMN (Public Land Mobile Network) selected by the upper layer, is provided.
The control unit executes an access regulation operation based on the DCN access regulation information for each PLMN.
Terminal.
A receiver that receives the DCN identifier when connected to the corresponding dedicated core network (DCN), and
Control for determining whether or not the access control information for each DCN for each PLMN, including the information corresponding to the PLMN (Public Land Mobile Network) selected by the upper layer and the information corresponding to the DCN, is included in the broadcast information. With a department,
The control unit executes an access regulation operation based on the access regulation information for each DCN for each PLMN.
Terminal.
Equipped with a timer used for the access regulation operation
The timer is started when the access restriction operation is executed in establishing a wireless connection to the corresponding DCN.
The terminal according to claim 1 or 2.
A receiving step that receives the DCN identifier when connected to the corresponding dedicated core network (DCN).
A decision step for determining whether or not the access control information for DCN for each PLMN including the information corresponding to the PLMN (Public Land Mobile Network) selected by the upper layer is included in the broadcast information, and
A communication method of a terminal including an execution step for executing an access regulation operation based on the DCN access regulation information for each PLMN.
A receiving step that receives the DCN identifier when connected to the corresponding dedicated core network (DCN).
A decision to determine whether or not the access control information for each DCN for each PLMN, including the information corresponding to the PLMN (Public Land Mobile Network) selected by the upper layer and the information corresponding to the DCN, is included in the broadcast information. Steps and
A communication method of a terminal including an execution step for executing an access regulation operation based on the access regulation information for each DCN for each PLMN.