KR102326159B1 - Device for providing ladn(local area data network) service and operating method of device - Google Patents

Abstract

A method of operating a terminal is disclosed. The terminal according to an embodiment receives the cell identifier list and information on the data network from the node, and attempts to access the data network inside or outside the service area. In this case, the service area is based on a cell identifier in the cell identifier list. When the terminal attempts to access the data network within the service area, the terminal can request a session based on the received information and access to the data network is allowed, and the terminal outside the service area When attempting to access the data network, the terminal cannot request the session and is not allowed to access the data network.

Description

DEVICE FOR PROVIDING LADN (LOCAL AREA DATA NETWORK) SERVICE AND OPERATING METHOD OF DEVICE}

The following embodiments relate to a device for providing a LADN service and a method of operating the device.

In the 5G architecture, a specific PDU (Packet Data Unit) session may provide a serviceable technology in a specific LADN (Local Area Data Network) service area. This technology can provide a closed network structure based on Private LTE and 5G in 4G, and can be provided as a major function of a smart factory.

The closed network structure is considered as the most important network technology for providing security for the wireless smart factory. Private LTE requires a separate application and server to provide a service in a specific area, and provides a service in a specific area based on TA (Tracking Area). In 5G, LADN provides a service for a specific area in the network, but it cannot provide a more sophisticated service area by providing a service area based on TA.

As a related prior art, there is Korea Patent Publication No. 10-1762909 (Title of the invention: Dedicated LTE network service providing apparatus and method, Applicant: Ariel Networks Co., Ltd.). The dedicated LTE network service providing device disclosed in the corresponding registered patent publication has a terminal communication unit that accesses a dedicated LTE network service zone management server and downloads a dedicated LTE network service zone profile, and a zone profile that stores the downloaded dedicated LTE network service zone profile information. A storage unit, a short-distance tagging unit that reports the entry and exit of the dedicated LTE network service zone to the zone management server through an access management server by a tag of short-range wireless communication identification information, and a tag of the short-range wireless communication identification information When entering the LTE network, it includes a dedicated APN change unit that changes to the APN (Access Point Name) of the dedicated LTE network based on the dedicated LTE network service zone profile information in the public LTE network through the LTE network air interface.

A method of operating a terminal according to one side includes: receiving information about a cell identifier list and a data network from a node; and attempting to access the data network inside or outside the service area.

The service area is based on a cell identifier in the cell identifier list.

When the terminal attempts to access the data network within the service area, the terminal can request a session based on the received information and access to the data network is allowed, and the terminal outside the service area When attempting to access the data network, the terminal cannot request the session and is not allowed to access the data network.

The service area may correspond to a Local Access Data Network (LADN) service area composed of E-UTRAN Cell Global Identifier (ECGI)-based cells.

The cell identifier list may correspond to an ECGI list.

The node may correspond to an Access and Mobility Management Function (AMF).

When the terminal enters the service area, the entry may be detected by the node and the detection result may be transmitted by the node to another node.

The other node may correspond to a Session Management Function (SMF).

If there is downlink data for the terminal, a PDU activation procedure may be performed by the other node.

When the terminal leaves the service area, the departure is detected by the node and notified to the other node, and a procedure for deactivating a PDU session for the terminal may be performed by the other node.

A method of operating a node of a wireless communication system according to one side includes transmitting information about a cell identifier list and a data network to a terminal; and detecting that the terminal enters the service area.

The service area is based on a cell identifier in the cell identifier list.

When the terminal attempts to access the data network within the service area, the terminal can request a session based on the received information and access to the data network is allowed, and the terminal outside the service area When attempting to access the data network, the terminal cannot request the session and is not allowed to access the data network.

The service area may correspond to a LADN service area configured based on ECGI.

The cell identifier list may correspond to an ECGI list.

The node may correspond to an AMF.

The method of operating the node may further include transmitting the detection result to another node.

The other node may correspond to the SMF.

If there is downlink data for the terminal, a PDU activation procedure may be performed by the other node.

The method of operating the node may further include detecting the departure and notifying the other node when the terminal leaves the service area.

A procedure for deactivating a PDU session for the terminal may be performed by the other node.

A terminal according to one side is a communication interface; and a processor for receiving a cell identifier list and information on a data network from a node through the communication interface, and attempting to access the data network from inside or outside a service area through the communication interface.

The service area is based on a cell identifier in the cell identifier list.

When the terminal attempts to access the data network within the service area, the terminal can request a session based on the received information and access to the data network is allowed, and the terminal outside the service area When attempting to access the data network, the terminal cannot request the session and is not allowed to access the data network.

The embodiments can configure a service area in a cell unit, thereby providing a more flexible and various service area of various sizes, thereby broadening the scope of service application, and eliminating the need for a separate application and authentication server for application development and configuration of an authentication server. Costs can be reduced, and services can be directly controlled from the NW (Network).

In addition, the embodiments may provide services such as a smart factory to factories of various sizes, and may contribute to the activation of a smart factory by providing a service area of a more subdivided unit.

1 and 2 are LADN service flow diagrams according to an embodiment.
3 is a diagram for explaining the operation of the UE in and out of the LADN service area according to an embodiment.
4 is a flowchart illustrating a method of operating a terminal according to an embodiment.
5 is a flowchart illustrating a method of operating a node according to an embodiment.
6 is a block diagram illustrating a terminal according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

The terms used in the examples are used for description purposes only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In the description of the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

1 and 2 are LADN service flow diagrams according to an embodiment.

Referring to FIG. 1 , a wireless communication system according to an embodiment includes a User Equipment (UE) 110 , an (R) AN 120 , a User Plane Function (UPF) 130 , and an Access and Mobility Management Function (AMF). 140 , and a Session Management Function (SMF) 150 .

The aforementioned wireless communication system may correspond to a 5G system.

UE 110 may alternatively be represented as user equipment, a wireless communication device, a terminal, or a mobile station.

(R) AN 120 may correspond to a base station.

UPF 130 transmits downlink data (or downlink Packet Data Unit (PDU)) for UE 110 to UE 110 through (R) AN 120 and (R) AN 120 Through the UE 110, the uplink data (or uplink PDU) is transmitted to a data network (DN, Data Network).

The AMF 140 provides a function for access and mobility management of the UE 110 .

The SMF 150 provides a session management function.

In the example shown in FIG. 1 , the AMF 140 transmits Local Area Data Network (LADN) information to the UE 110 when the UE 110 is registered. The LADN information may include, for example, at least one of an E-UTRAN Cell Global Identifier (ECGI) list and a LADN Data Network Name (DNN), but is not limited thereto.

UE 110 may enter the LADN service area. In this case, the LADN service area according to an embodiment may be based on ECGI. In other words, the LADN service area according to an embodiment may not be configured based on a tracking area (TA) but may be configured in units of cells based on ECGI. As an example, the service area configuration apparatus (not shown) according to an embodiment may manage or set the first cell of the AN 120 as the first LADN service area, and configure the second cell of the AN 120 as the second LADN. It can be managed or set as a service area. In this case, the first LADN service area may be mapped to the ECGI of the first cell, and the second LADN service area may be mapped to the ECGI of the second cell. Also, the service area configuration apparatus (not shown) according to an embodiment may manage or set a cell of another AN as a third LADN service area. Since TA usually includes a unit or more areas, it is difficult to provide sophisticated services in a TA-based service area. However, since the LADN service area according to an embodiment may be configured in units of cells based on ECGI, it may be configured more elaborately than the TA-based service area and may have various sizes.

When the UE 110 enters the LADN service area, a PDU session activation procedure may be started.

When the UE 110 leaves the LADN service area, the PDU session deactivation procedure may be started.

Hereinafter, an operation of the wireless communication system according to an embodiment will be described in detail with reference to FIG. 2 .

Referring to FIG. 2 , the AMF 140 transmits LADN information to the UE 110 ( 220 ). As an example, the UE 110 may send a registration request to the AN 120 , the AN 120 may transmit a registration request of the UE 110 to the AMF 140 , and the AMF 140 may send a registration confirmation to the AN It can be transmitted to the UE 110 via 120 . The AMF 140 may transmit LADN information to the UE 110 when the UE 110 is registered. As described above, the LADN information may include, for example, at least one of an ECGI list and a LADN DNN.

The ECGI list includes the ECGI of one or more cells of the AN 120 .

The UE 110 enters the ECGI-based LADN service area.

The AMF 140 may detect that the UE 110 has entered the ECGI-based LADN service area. As an example, the AMF 140 may obtain the location information of the UE 110 (eg, ECGI of the cell in which the UE 110 is located), and based on the obtained location information, the UE 110 is the corresponding LADN It can detect that it has entered the service area.

The AMF 140 may notify the SMF 150 that the UE 110 has entered the LADN service area ( 230 ).

When the SMF 150 receives notification from the AMF 140 that the UE 110 has entered the LADN service area, if there is downlink data for the UE 110, the LADN PDU session activation procedure may be performed. As an example, the SMF 150 may transmit a PDU session request to the UPF 130 and may perform a PDU session activation procedure in cooperation with the UPF 130 ( 240 ).

A LADN PDU session may be created by performing the LADN PDN session activation procedure.

The UPF 130 may receive downlink data for the UE 110 from the DN 210-1, and may transmit the downlink data to the UE 110 through the AN 120, and the AN 120 ) may receive uplink data from the UE 110 and transmit the uplink data to the DN 210-1 (250).

The UE 110 may leave the LADN service area configured in units of cells.

The AMF 140 may detect that the UE 110 has departed from the LADN service area configured in units of cells. The AMF 140 may notify the SMF 150 that the UE 110 has left the LADN service area ( 230 ).

When the SMF 150 receives notification from the AMF 140 that the UE 110 leaves the corresponding LADN service area, the SMF 150 may release the LADN PDU session and perform the LADN PDU deactivation procedure. As an example, the SMF 150 may transmit a PDU session release request to the UPF 130 and may perform a PDU session deactivation procedure in cooperation with the UPF 130 (240).

Existing Private LTE (or closed LTE network) has separate applications and authentication servers to authenticate users who can be used in a specific area. When a service is provided through a separate application, terminal verification is required for each terminal, and a separate application development and installation is required, which increases the business cost of the operator, and the user has the inconvenience of having to install the application. According to an embodiment, when a 5G closed network is configured through an ECGI-based LADN, problems occurring in the existing Private LTE can be solved and scalability can be improved.

3 is a diagram for explaining the operation of the UE in and out of the LADN service area according to an embodiment.

Referring to FIG. 3 , whether the UE 110 accesses the network may be determined according to being located inside or outside the LADN service area according to an embodiment.

The UE 110 cannot access the local data network 210 even if it attempts to access the local data network 210 outside the ECGI-based LADN service area. In other words, when the UE 110 attempts to access the local data network 210 from outside the ECGI-based LADN service area, it cannot make a PDU session request to the LADN DNN and cannot access the local data network 210, so the server can't connect

When the UE 110 attempts to access the local data network 210 within the ECGI-based LADN service area, it is possible to request a PDU session through the LADN DNN and access to the local data network 210 is allowed to access the server. As an example, the UE 110 may transmit a PDU session request to the AMF 140 within the ECGI-based LADN service area or may transmit it to the AMF 140 through the AN 120 . The AMF 140 may transmit a PDU session request to the SMF 150 , and the SMF 150 may transmit a PDU session request to the UPF 130 . The SMF 150 may receive a response to the PDU session request from the UPF 130 , and the corresponding response may be transmitted to the UE 110 through the AMF 140 and the AN 120 . Accordingly, a PDU session may be created.

Users can receive services when they are within the ECGI-based LADN service area.

According to an embodiment, a closed network structure in a specific area (eg, a factory, etc.) may be configured, and an unregistered UE may be blocked so that a secure wireless service may be provided to a user within the service area. Also, according to an embodiment, the service area is configured with ECGI instead of the TA method, so that the service area can be configured more precisely than the TA method-based service area. Accordingly, flexible configuration is possible and precision can be improved according to the customer's area such as a specific factory, and LADN service scenarios can be expanded compared to the existing method, and the applicability can be increased.

4 is a flowchart illustrating a method of operating a terminal according to an embodiment.

A terminal according to an embodiment is a different representation of the UE 110 .

Referring to FIG. 4 , the terminal 110 receives information about a cell identifier list and a data network from a node ( 410 ). The cell identifier list corresponds to, for example, the ECGI list, and the node corresponds to, for example, the AMF 140 .

The terminal 110 attempts to access the data network inside or outside the service area based on the cell identifier in the cell identifier list ( 420 ). The corresponding service area is a LADN service area composed of ECGI-based cells. When the terminal 110 attempts to access the data network within the corresponding service area, a session request based on received information (eg, LADN DNN) is possible and access to the data network is allowed. On the other hand, when the terminal 110 attempts to access the data network outside the corresponding service area, a session request based on received information (eg, LADN DNN) is not possible and access to the data network is not allowed.

When the terminal 110 enters the above-described service area, the corresponding entry may be detected by the node and the detection result may be transmitted by the node to another node. Here, the other node corresponds to the SMF 150 . Another node may perform a PDU session activation procedure.

When the terminal 110 deviates from the above-described service area, the departure may be detected by the node and the detection result may be transmitted to another node by the node. In this case, the other node may perform the PDU session deactivation procedure.

Since the matters described with reference to FIGS. 1 to 3 may be applied to the matters described with reference to FIG. 4 , a detailed description thereof will be omitted.

5 is a flowchart illustrating a method of operating a node according to an embodiment.

A node to be described with reference to FIG. 5 corresponds to the AMF 140 .

Referring to FIG. 5 , the node transmits a cell identifier list and information on a data network to the terminal 110 ( 510 ).

The node detects that the terminal 110 enters the service area ( 520 ). In this case, the service area is based on the cell identifier in the cell identifier list.

When the terminal 110 attempts to access the data network within the service area, a session request based on received information (eg, LADN DNN) is possible and access to the data network is allowed. However, when the terminal 110 attempts to access the data network from outside the service area, a session request based on received information (eg, LADN DNN) is impossible and access to the data network is not allowed.

Since the matters described with reference to FIGS. 1 to 4 may be applied to the matters described with reference to FIG. 5 , a detailed description thereof will be omitted.

6 is a block diagram illustrating a terminal according to an embodiment.

Referring to FIG. 6 , the terminal 110 includes a communication interface 610 and a processor 620 .

The communication interface 610 may perform mobile communication (eg, 4G and/or 5G).

The processor 620 receives information about the cell identifier list and the data network from the node through the communication interface 610 , and the data network inside or outside the service area based on the cell identifier in the cell identifier list through the communication interface 610 . try to connect to At this time, when the terminal 110 attempts to access the data network within the corresponding service area, a session request based on information received from the node is possible and access to the data network is allowed. However, when the terminal 110 attempts to access the data network outside the service area, a session request based on information received from the node is not allowed and access to the data network is not allowed.

Although not shown in FIG. 6 , the terminal 110 may further include a memory. The memory is connected to the processor 620 and may store instructions executable by the processor 620 , data to be calculated by the processor 620 , or data processed by the processor 620 . Memory 630 may include, for example, a non-transitory computer-readable medium, such as high-speed random access memory and/or a non-volatile computer-readable storage medium (eg, one or more disk storage devices, flash memory devices, or other non-volatile solid state devices). memory device).

Since the matters described with reference to FIGS. 1 to 5 may be applied to the matters described with reference to FIG. 6 , a detailed description thereof will be omitted.

The device described above may be implemented as a hardware component, a software component, and/or a combination of the hardware component and the software component. For example, devices and components described in the embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA). , a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions, may be implemented using one or more general purpose or special purpose computers. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to execution of the software. For convenience of understanding, although one processing device is sometimes described as being used, one of ordinary skill in the art will recognize that the processing device includes a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that can include For example, the processing device may include a plurality of processors or one processor and one controller. Other processing configurations are also possible, such as parallel processors.

Software may comprise a computer program, code, instructions, or a combination of one or more thereof, which configures a processing device to operate as desired or is independently or collectively processed You can command the device. The software and/or data may be any kind of machine, component, physical device, virtual equipment, computer storage medium or device, to be interpreted by or to provide instructions or data to the processing device. , or may be permanently or temporarily embody in a transmitted signal wave. The software may be distributed over networked computer systems, and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiment, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and carry out program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

As described above, although the embodiments have been described with reference to the limited embodiments and drawings, various modifications and variations are possible by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (17)

In the operating method of the terminal,
receiving information about a cell identifier list and a data network from a node; and
attempting to access the data network from within or outside the service area;
including,
The service area is based on a cell identifier in the cell identifier list,
When the terminal attempts to access the data network within the service area, the terminal can request a session based on the received information and is allowed access to the data network,
When the terminal attempts to access the data network outside the service area, the terminal cannot request the session and is not allowed to access the data network,
The service area corresponds to a Local Access Data Network (LADN) service area composed of E-UTRAN Cell Global Identifier (ECGI)-based cells,
How the terminal operates.
delete According to claim 1,
The cell identifier list corresponds to the ECGI list,
How the terminal operates.
According to claim 1,
The node corresponds to an Access and Mobility Management Function (AMF),
How the terminal operates.
According to claim 1,
When the terminal enters the service area, the entry is detected by the node and the detection result is transmitted by the node to another node,
How the terminal operates.
6. The method of claim 5,
The other node corresponds to SMF (Session Management Function),
How the terminal operates.
6. The method of claim 5,
If there is downlink data for the terminal, a PDU (packet data unit) activation procedure is performed by the other node,
How the terminal operates.
8. The method of claim 7,
When the terminal leaves the service area, the departure is detected by the node and notified to the other node, and a procedure for deactivating a PDU session for the terminal is performed by the other node,
How the terminal operates.
A method of operating a node in a wireless communication system, the method comprising:
transmitting information about a cell identifier list and a data network to the terminal; and
Detecting that the terminal enters the service area
including,
The service area is based on a cell identifier in the cell identifier list,
When the terminal attempts to access the data network within the service area, the terminal can request a session based on information on the data network and is allowed access to the data network,
When the terminal attempts to access the data network outside the service area, the terminal cannot request the session and is not allowed to access the data network,
The service area corresponds to a Local Access Data Network (LADN) service area configured based on E-UTRAN Cell Global Identifier (ECGI).
How the node works.
delete 10. The method of claim 9,
The cell identifier list corresponds to the ECGI list,
How the node works.
10. The method of claim 9,
The node corresponds to an Access and Mobility Management Function (AMF),
How the node works.
10. The method of claim 9,
Transmitting the detection result to another node
further comprising,
How the node works.
14. The method of claim 13,
The other node corresponds to SMF (Session Management Function),
How the node works.
14. The method of claim 13,
If there is downlink data for the terminal, a PDU (packet data unit) activation procedure is performed by the other node,
How the node works.
16. The method of claim 15,
When the terminal leaves the service area, detecting the departure and notifying the other node
further comprising,
A procedure of deactivating a PDU session for the terminal is performed by the other node,
How the node works.
In the terminal,
communication interface; and
A processor that receives a cell identifier list and information about a data network from a node through the communication interface, and attempts to access the data network from inside or outside the service area through the communication interface
including,
The service area is based on a cell identifier in the cell identifier list,
When the terminal attempts to access the data network within the service area, the terminal can request a session based on the received information and is allowed access to the data network,
When the terminal attempts to access the data network outside the service area, the terminal cannot request the session and is not allowed to access the data network,
The service area corresponds to a Local Access Data Network (LADN) service area configured based on E-UTRAN Cell Global Identifier (ECGI).
terminal.

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