KR20230022741A - Method and apparatus forcontrolling deregistration timer for ue onboarding in wireless communication system - Google Patents

Abstract

The present invention relates to a communication technique that combines a 5G communication system with an IoT technology to support a higher data transmission rate after a 4G system and a system thereof. The present invention can be applied to intelligent services (eg, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail business, security and safety related services, etc.) based on a 5G communication technology and an IoT-related technology.

Description

Apparatus and method for controlling deregistration timer for UE onboarding in wireless communication system

The present disclosure relates to a wireless communication system, and more particularly, to an apparatus and method for controlling a deregistration timer for UE onboarding.

Efforts are being made to develop an improved 5th generation (5G) communication system or a pre-5G communication system in order to meet the growing demand for wireless data traffic after the commercialization of a 4G (4th generation) communication system. For this reason, the 5G communication system or pre-5G communication system has been called a Beyond 4G Network communication system or a Post LTE system.

In order to achieve a high data rate, the 5G communication system is being considered for implementation in a mmWave band (eg, a 60 gigabyte (60 GHz) band). In order to mitigate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) are used in 5G communication systems. ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed.

In addition, to improve the network of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), and an ultra-dense network , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, CoMP (Coordinated Multi-Points), and reception interference cancellation etc. are being developed.

In addition, in the 5G system, Advanced Coding Modulation (ACM) methods such as FQAM (Hybrid Frequency Shift Keying and Quadrature Amplitude Modulation) and SWSC (Sliding Window Superposition Coding) and advanced access technology FBMC (Filter Bank Multi Carrier) ), Non Orthogonal Multiple Access (NOMA), and Sparse Code Multiple Access (SCMA) are being developed.

In the 5G system, support for various services is considered compared to the existing 4G system. For example, the most representative services are enhanced mobile broad band (eMBB), ultra-reliable and low latency communication (URLLC), and massive machine-to-machine communication (mMTC). machine type communication), next-generation broadcast service (eMBMS: evolved multimedia broadcast/multicast service), and the like. Also, a system providing the URLLC service may be referred to as a URLLC system, and a system providing the eMBB service may be referred to as an eMBB system. Also, the terms service and system may be used interchangeably.

Among them, the URLLC service is a service that is newly considered in the 5G system, unlike the existing 4G system, and has ultra-high reliability (eg, packet error rate of about 10-5) and low latency (eg, About 0.5msec) condition satisfaction is required. In order to satisfy these strict requirements, the URLLC service may need to apply a shorter transmission time interval (TTI) than the eMBB service, and various operation methods using this are being considered.

On the other hand, the Internet is evolving from a human-centered connection network in which humans create and consume information to an Internet of Things (IoT) network in which information is exchanged and processed between distributed components such as things. IoE (Internet of Everything) technology, which combines IoT technology with big data processing technology through connection with cloud servers, etc., is also emerging. In order to implement IoT, technical elements such as sensing technology, wired/wireless communication and network infrastructure, service interface technology, and security technology are required, and recently, sensor networks for connection between objects and machine to machine , M2M), and MTC (Machine Type Communication) technologies are being studied.

In the IoT environment, intelligent IT (Internet Technology) services that create new values in human life by collecting and analyzing data generated from connected objects can be provided. IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliances, advanced medical service, etc. can be applied to

Accordingly, various attempts are being made to apply the 5G communication system to the IoT network. For example, technologies such as sensor network, machine to machine (M2M), and machine type communication (MTC) are implemented by techniques such as beamforming, MIMO, and array antenna, which are 5G communication technologies. will be. The application of the cloud radio access network (cloud RAN) as the big data processing technology described above can be said to be an example of convergence of 5G technology and IoT technology.

As various services can be provided according to the above and the development of mobile communication systems, in particular, a method for efficiently using a NPN (Non-Public Network) is required.

Various embodiments may provide a method and apparatus capable of effectively providing a service in a wireless communication system.

According to various embodiments, in a wireless communication system, a UE may receive a deregistration timer during UE onboarding, check deregistration in advance, and then control the deregistration time.

According to various embodiments, the terminal informs the terminal of a deregistration timer value set during UE onboarding to predict when the terminal will be deregistered, and accordingly, the deregistration timer value We suggest a way to extend the registration time until Remote Provisioning is finished by requesting a reset of

In a wireless communication system according to various embodiments, a terminal includes a transceiver; and a processor coupled to the transceiver. The processor controls to determine whether to extend the deregistration timer, and when extending the deregistration timer, transmits a UL NAS TRANSPORT message including a first deregistration timer value to Access and Mobility Management Function (AMF) control to receive a DL NAS TRANSPORT message including a second deregistration timer value determined based on the UL NAS TRANSPORT message from the AMF, and apply the second deregistration timer value to the deregistration timer You can control it.

In a wireless communication system according to various embodiments, the AMF includes a transceiver; and a processor coupled to the transceiver. The processor controls to receive a UL NAS TRANSPORT message including a first deregistration timer value from a terminal, controls to determine a second deregistration timer value based on the UL NAS TRANSPORT message, and the second registration It can be controlled to transmit a DL NAS TRANSPORT message including a release timer value to the terminal.

According to various embodiments, efficiency of a service may be increased in a wireless communication system.

According to various embodiments, in a wireless communication system, a terminal receives a deregistration timer during UE onboarding, confirms deregistration in advance, and then controls the deregistration time, thereby improving communication efficiency. can increase

1 is a conceptual diagram illustrating the structure of a wireless communication system according to various embodiments.
2 is a conceptual diagram illustrating UE onboarding based on a user plane (User Plane, UP) in a wireless communication system according to various embodiments.
3 is a flowchart illustrating a procedure for a UE to register with an ON-SNPN for UE onboarding in a wireless communication system according to various embodiments.
4 is a flowchart illustrating a procedure for a UE to request an extension of a deregistration timer value from an AMF in a wireless communication system according to various embodiments.
5 is a block diagram illustrating a terminal of a wireless communication system according to various embodiments.
6 is a block diagram illustrating a network entity in a wireless communication system according to various embodiments.

Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. At this time, it should be noted that the same components in the accompanying drawings are indicated by the same reference numerals as much as possible. In addition, detailed descriptions of well-known functions and configurations that may obscure the subject matter of the present disclosure will be omitted.

In describing the embodiments in the present disclosure, descriptions of technical contents that are well known in the technical field to which the present disclosure pertains and are not directly related to the present disclosure will be omitted. This is to more clearly convey the gist of the present disclosure without obscuring it by omitting unnecessary description.

For the same reason, in the accompanying drawings, some components are exaggerated, omitted, or schematically illustrated. Also, the size of each component does not entirely reflect the actual size. In each figure, the same reference number is assigned to the same or corresponding component.

Advantages and features of the present disclosure, and methods for achieving them, will become clear with reference to embodiments described below in detail in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below and may be implemented in various different forms, but only the present embodiments make the present disclosure complete, and those of ordinary skill in the art to which the present disclosure belongs It is provided to fully inform the scope of the present disclosure, which is only defined by the scope of the claims. Like reference numbers designate like elements throughout the specification.

At this time, it will be understood that each block of the process flow chart diagrams and combinations of the flow chart diagrams can be performed by computer program instructions. These computer program instructions may be embodied in a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, so that the instructions executed by the processor of the computer or other programmable data processing equipment are described in the flowchart block(s). It creates means to perform functions. These computer program instructions may also be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular way, such that the computer usable or computer readable memory The instructions stored in are also capable of producing an article of manufacture containing instruction means that perform the functions described in the flowchart block(s). The computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operational steps are performed on the computer or other programmable data processing equipment to create a computer-executed process to generate computer or other programmable data processing equipment. Instructions for performing processing equipment may also provide steps for performing the functions described in the flowchart block(s).

Additionally, each block may represent a module, segment, or portion of code that includes one or more executable instructions for executing specified logical function(s). It should also be noted that in some alternative implementations it is possible for the functions mentioned in the blocks to occur out of order. For example, two blocks shown in succession may in fact be executed substantially concurrently, or the blocks may sometimes be executed in reverse order depending on their function.

At this time, the term '~unit' used in this embodiment means software or a hardware component such as FPGA or ASIC, and '~unit' performs certain roles. However, '~ part' is not limited to software or hardware. '~bu' may be configured to be in an addressable storage medium and may be configured to reproduce one or more processors. Therefore, as an example, '~unit' refers to components such as software components, object-oriented software components, class components, and task components, processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. Functions provided within components and '~units' may be combined into smaller numbers of components and '~units' or further separated into additional components and '~units'. In addition, components and '~units' may be implemented to play one or more CPUs in a device or a secure multimedia card.

Hereinafter, a base station is a subject that performs resource allocation of a terminal, and is at least one of a Node B, a base station (BS), an eNode B (eNB), a gNode B (gNB), a radio access unit, a base station controller, or a node on a network. can The terminal may include a user equipment (UE), a mobile station (MS), a cellular phone, a smart phone, a computer, or a multimedia system capable of performing communication functions. In addition, the embodiments of the present disclosure can be applied to other communication systems having a similar technical background or channel type to the embodiments of the present disclosure described below. In addition, the embodiments of the present disclosure can be applied to other communication systems through some modification within a range that does not greatly deviate from the scope of the present disclosure based on the judgment of a skilled person with technical knowledge.

A term used in the following description for identifying a connection node, a term referring to a network entity or network function (NF), a term referring to messages, a term referring to an interface between network objects, and various Terms referring to identification information are illustrated for convenience of description. Accordingly, the present disclosure is not limited to the terms described below, and other terms referring to objects having equivalent technical meanings may be used.

For convenience of description below, some terms and names defined in the 3rd generation partnership project long term evolution (3GPP) standard may be used. However, the present disclosure is not limited by the above terms and names, and may be equally applied to systems conforming to other standards.

1 is a conceptual diagram illustrating the structure of a wireless communication system according to various embodiments.

Referring to FIG. 1 , the wireless communication system may be a 5G network. For example, descriptions of network entities or network nodes constituting a 5G network are as follows.

(R) AN ((Radio) Access Network) is a subject that performs radio resource allocation of terminals, eNode B, Node B, BS (Base Station), NG-RAN (NextGeneration Radio Access Network), 5G-AN, wireless It may be at least one of an access unit, a base station controller, or a node on a network. The terminal may include a user equipment (UE), a next generation UE (NG UE), a mobile station (MS), a cellular phone, a smart phone, a computer, or a multimedia system capable of performing communication functions. In addition, although an embodiment of the present disclosure is described below using a 5G system as an example, the embodiment of the present disclosure may be applied to other communication systems having a similar technical background. In addition, the embodiments of the present disclosure can be applied to other communication systems through some modification within a range that does not greatly deviate from the scope of the present disclosure based on the judgment of a skilled person with technical knowledge.

As the wireless communication system evolves from 4G system to 5G system, it defines a new core network, NextGen Core (NG Core) or 5GC (5G Core Network). The new Core Network virtualized all existing network entities (NE: Network Entities) and made them into network functions (NF: Network Functions). According to various embodiments, a network function may mean a network entity, a network component, or a network resource.

According to various embodiments, 5GC may include the NFs shown in FIG. 1 . Of course, it is not limited to the example of FIG. 1 , and 5GC may include more or fewer NFs than the NFs shown in FIG. 1 .

According to various embodiments, an access and mobility management function (AMF) may be a network function that manages mobility of a terminal.

According to various embodiments, a Session Management Function (SMF) may be a network function that manages a packet data network (PDN) connection provided to a terminal. A PDN connection may be referred to as a Packet Data Unit (PDU) session.

According to various embodiments, a policy control function (PCF) may be a network function that applies a service policy of a mobile communication service provider to a terminal, a billing policy, and a policy for a PDU session.

According to various embodiments, Unified Data Management (UDM) may be a network function that stores information about subscribers.

According to various embodiments, a network exposure function (NEF) may be a function that provides information about a terminal to a server outside the 5G network. In addition, NEF can provide the 5G network with the ability to provide information necessary for service and store it in UDR.

According to various embodiments, a user plane function (UPF) may be a function that serves as a gateway to deliver user data (PDU) to a data network (DN).

According to various embodiments, a Network Repository Function (NRF) may perform a function of discovering NFs.

According to various embodiments, an Authentication Server Function (AUSF) may perform terminal authentication in a 3GPP access network and a non-3GPP access network.

According to various embodiments, a network slice selection function (NSSF) may perform a function of selecting a network slice instance provided to a terminal.

According to various embodiments, a data network (DN) may be a data network through which a terminal transmits and receives data in order to use a service of a network operator or a 3rd party service.

2 is a conceptual diagram illustrating UE onboarding based on a user plane (User Plane, UP) in a wireless communication system according to various embodiments.

Referring to FIG. 2, a wireless communication system for transmitting SNPN (Standalone NPN) credentials and subscriber information for accessing SNPN to a terminal includes a UE, ON-SNPN (Onboarding SNPN), DCS (Default Credentials Server), It may include a Provisioning Server (PVS) and a Subscription Owner SNPN (SO-SNPN) that holds SNPN qualifications and subscriber information.

First, it is assumed that the terminal (UE) does not have SNPN qualification and subscriber information (User Subscription Data), and the terminal has default UE authentication assigned by the DCS. In addition, the DCS may allocate a Subscription Permanent Identifier (SUPI) that can uniquely identify the UE to the UE.

ON-SNPN is a user plane (User Plane, UP)-based IP connection (UE Onboarding) or A control plane (CP) based non-access stratum (NAS) connection (UE onboarding) may be provided. In order to determine whether to provide the UE onboarding service to the UE, the ON-SNPN may request UE authentication and authorization from the DCS.

The DCS may pre-configure the default UE qualification and SUPI for the UE and store this information. When performing registration for UE onboarding from ON-SNPN, the DCS may receive a request for authentication of the UE. Here, authentication for the terminal may be performed using default UE qualification and SUPI.

In addition, when the PVS transmits SNPN qualification and subscriber information to the UE, DCS performs authentication/authorization of the UE from the PVS to determine whether the UE has the authority to receive the SNPN qualification and subscriber information. can be requested The DCS may be a manufacturer of a terminal or a third party associated with a manufacturer or a SNPN network operator.

The PVS can receive user subscriber information such as SNPN qualification and user configuration information from the SO-SNPN and transmit it to the terminal.

The PVS may exist as one server with the DCS, and like the DCS, it may be a server owned by a third party associated with a manufacturer of a terminal or a SNPN network operator. The PVS may communicate with the DCS for authentication/authorization of the terminal.

The SO-SNPN possessing SNPN credentials and user subscriber information can transmit the SNPN credentials and user subscriber information to the terminal through PVS.

3 is a flowchart illustrating a procedure for a UE to register with an ON-SNPN for UE onboarding in a wireless communication system according to various embodiments.

When a UE registers with ON-SNPN, it can receive an IP connectivity service for receiving SNPN qualification and user subscription data from ON-SNPN. For example, a PDU session for UE onboarding may provide a restricted service capable of receiving information accessible by the UE to a Provisioning Server (PVS). In addition, in order to prevent a UE that has accessed for UE onboarding from staying in the ON-SNPN for too long, AMF starts a Deregistration Timer when the UE successfully registers in the ON-SNPN, and the timer expires. ), the UE can be deregistered.

According to various embodiments, the ON-SNPN transfers a deregistration timer value to a UE that has successfully registered for UE onboarding, and the UE may determine when to deregister from the ON-SNPN. When the Remote Provisioning procedure for receiving SNPN credentials and User Subscription Data is not completed, the UE extends the timer value to register the UE to successfully perform the Remote Provisioning procedure. Deregistration Timer can be extended.

For example, referring to FIG. 3, in step 1, the UE may transmit a registration request message to the NG-RAN. NG-RAN may receive a registration request message from the UE. For example, the UE may include an onboarding indicator in an access network (AN) parameter of the registration request message. For example, the 5 Generation System (5GS) registration type of the registration request message may be designated as 'SNPN Onboarding'. The registration request message may include onboarding 5G Subscription Concealed Identifier (SUCI) and default UE qualification.

In step 2, the NR-RAN may perform an AMF selection operation. For example, the NG-RAN may check the onboarding indicator included in the AN parameter and select an AMF supporting UE onboarding.

In step 3, the NR-RAN may transmit a registration request message to the AMF. AMF may receive a registration request message from NR-RAN.

In step 4, the AMF may perform an AUSF selection operation. For example, AMF can confirm that the 5GS registration type is 'SNPN onboarding'. AMF may apply AMF Configuration Data for Onboarding to provide network services only for UE onboarding to the UE. AMF may select AUSF for UE authentication through DCS.

In step 5, AUSF may perform DCS and terminal authentication (authentication/security). For example, the AUSF may transmit the onboarding SUCI (SUPI) received from the UE and the default UE qualification to the DCS. DCS may receive onboarding SUCI (SUPI) and default UE entitlement from AUSF.

If the UE authentication is successful in step 5, the AMF may transmit a registration accept message to the UE in step 6. The UE may receive a registration accept message from AMF. For example, the AMF may start a deregistration timer for UE onboarding and transmit a registration acceptance message including the timer value to the UE. The registration acceptance message may inform the UE that registration for UE onboarding has been accepted. In addition, the deregistration message may include a deregistration timer extending indicator indicating whether a request for extension of the deregistration timer is possible.

In step 7, the AMF may send a registration complete message to the UE. The UE may receive a registration complete message from AMF. For example, the UE may transmit a Registration Complete message to the AMF in response to the Registration Accept message. In addition, the UE may start the received timer and perform a remote provisioning procedure before the deregistration timer expires.

4 is a flowchart illustrating a procedure for a UE to request an extension of a deregistration timer value from an AMF in a wireless communication system according to various embodiments.

For example, the UE may determine whether a Remote Provisioning procedure is completed until a deregistration timer expires based on the Registration Accept message of FIG. 3 . When it is determined that the remote provisioning procedure will not be completed until the deregistration timer) expires, the UE may request an extension of the deregistration timer value from the AMF.

For example, referring to FIG. 4 , in step 1, when it is determined that a deregistration timer will expire during a remote provisioning procedure, the UE may determine to extend the timer. For example, the UE may perform a timer extension procedure based on a deregistration timer extending indicator value included in a registration accept message received from the AMF. For example, when it is determined that the time at which remote provisioning is completed is longer than a predetermined time, the UE may not perform the timer extension procedure.

In step 2, the UE may transmit an uplink (UL) NAS TRANSPORT message including a requested deregistration timer value to the AMF. The AMF may receive a UL NAS TRANSPORT message including the requested deregistration timer value from the UE. For example, the UE can measure when remote provisioning is complete. For example, the deregistration timer value may be determined based on the completion time of remote provisioning measured by the UE.

In step 3, the AMF may decide whether to grant the request based on the ON-SNPN policy. For example, the AMF may determine whether to accept the requested deregistration timer value received from the UE. For example, the AMF may not approve the requested deregistration timer value when the registration accept message does not include a deregistration timer extending indicator. For example, the AMF determines whether to grant the requested deregistration timer value or to provide another timer value to the UE based on ON-SNPN policies. For example, the AMF, even if a deregistration timer extending indicator is included in the Registration Accept message, when the network environment or the requested timer value exceeds a predetermined threshold value, the AMF The requested deregistration timer value may be rejected.

In step 4, the AMF may transmit a downlink (DL) NAS TRANSPORT message including a granted deregistration timer value to the UE. The UE may receive a DL NAS TRANSPORT message including the granted deregistration timer value from the AMF. For example, the AMF may reset the timer to a granted value while transmitting a DL NAS TRANSPORT message. For example, when the AMF does not accept the extension of the requested deregistration timer value, the granted value may not exist or may be '0'.

In step 5, the UE may apply the granted deregistration timer value received from the AMF. For example, the UE may reset the timer based on the granted deregistration timer value. For example, the UE may initiate a deregistration procedure when the granted timer value is less than a predetermined threshold value or when the extension is not accepted.

5 is a block diagram illustrating a terminal of a wireless communication system according to various embodiments.

Referring to FIG. 5 , a processor 520 controlling overall operations of a terminal terminal according to various embodiments may include a transmission/reception unit 500 including a transmission unit and a reception unit, and a memory 510 . Of course, it is not limited to the above example, and the terminal may include more or fewer components than the configuration shown in FIG. 5 . For example, the UE of FIG. 5 may be the same as or similar to the UE of FIGS. 1 to 4 .

According to various embodiments, the transceiver 500 may transmit and receive signals to and from network entities or other terminals. A signal transmitted to and from a network entity may include control information and data. In addition, the transceiver 500 may receive a signal through a wireless channel, output the signal to the processor 520, and transmit the signal output from the processor 520 through a wireless channel. For example, the network entities may be the same as or similar to at least one of the network entities of FIGS. 1 to 4 .

According to various embodiments, the processor 520 may control the terminal to perform any one operation of the above-described embodiments. Meanwhile, the processor 520, the memory 510, and the transceiver 500 do not necessarily have to be implemented as separate modules, but may be implemented as a single component in the form of a single chip. Also, the processor 520 and the transceiver 500 may be electrically connected. Also, the processor 520 may be an application processor (AP), a communication processor (CP), a circuit, an application-specific circuit, or at least one processor.

According to various embodiments, the memory 510 may store data such as a basic program for operating a terminal, an application program, and setting information. In particular, the memory 510 provides stored data according to a request of the processor 520 . The memory 510 may include a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, the number of memories 510 may be plural. Also, the processor 520 may perform the above-described embodiments based on a program for performing the above-described embodiments of the present disclosure stored in the memory 510 .

6 is a block diagram illustrating a network entity in a wireless communication system according to various embodiments.

Referring to FIG. 6 , a network entity according to various embodiments may include a processor 920 controlling overall operations of the network entity, a transmission/reception unit 600 including a transmission unit and a reception unit, and a memory 610 . Of course, it is not limited to the above example, and the network entity may include more or fewer components than those shown in FIG. 6 . For example, the network entity of FIG. 6 may be the same as or similar to at least one of the network entities of FIGS. 1 to 4 .

According to various embodiments, the transceiver 600 may transmit and receive signals with at least one of other network entities or terminals. A signal transmitted/received with at least one of other network entities or terminals may include control information and data. The terminal may be the same as or similar to the terminal of FIG. 5 .

According to various embodiments, the processor 620 may control a network entity to perform any one operation of the above-described embodiments. Meanwhile, the processor 620, the memory 610, and the transceiver 600 do not necessarily have to be implemented as separate modules, but may be implemented as a single component in the form of a single chip. Also, the processor 620 and the transceiver 600 may be electrically connected. Also, the processor 620 may be an application processor (AP), a communication processor (CP), a circuit, an application-specific circuit, or at least one processor.

According to various embodiments, the memory 610 may store data such as a basic program for operation of a network entity, an application program, and setting information. In particular, the memory 610 provides stored data according to a request of the processor 620 . The memory 610 may include a storage medium such as a ROM, a RAM, a hard disk, a CD-ROM, and a DVD, or a combination of storage media. Also, the number of memories 610 may be plural. In addition, the processor 620 may perform the above-described various embodiments based on a program for performing the above-described embodiments of the present disclosure stored in the memory 610 .

It should be noted that the above configuration diagram, exemplary diagram of a control/data signal transmission method, operational procedure exemplary diagram, and configuration diagram are not intended to limit the scope of the present disclosure. That is, all components, entities, or steps of operation described in various embodiments of the present disclosure should not be interpreted as being essential components for the implementation of the disclosure, and even if only some components are included, the scope does not harm the essence of the disclosure can be implemented within In addition, each embodiment can be operated in combination with each other as needed. For example, a network entity and a terminal may be operated by combining parts of the methods proposed in the present disclosure.

Operations of the base station or terminal described above can be realized by including a memory device storing the corresponding program code in an arbitrary component in the base station or terminal device. That is, the controller of the base station or terminal device may execute the above-described operations by reading and executing program codes stored in a memory device by a processor or a central processing unit (CPU).

Various components, modules, and the like of entities, base stations, or terminal devices described in various embodiments are hardware circuits, for example, complementary metal oxide semiconductor-based logic circuits, firmware ( It may be operated using hardware circuitry, such as firmware, software and/or a combination of hardware and firmware and/or software embedded in a machine readable medium. As an example, various electrical structures and methods may be implemented using electrical circuits such as transistors, logic gates, and application specific semiconductors.

When implemented in software, a computer readable storage medium storing one or more programs (software modules) may be provided. One or more programs stored in a computer-readable storage medium are configured for execution by one or more processors in an electronic device. One or more programs include instructions for causing an electronic device to execute methods according to various embodiments described in the claims or specification of the present disclosure.

Such programs (software modules, software) may include random access memory, non-volatile memory including flash memory, read only memory (ROM), and electrically erasable programmable ROM. (EEPROM: Electrically Erasable Programmable Read Only Memory), magnetic disc storage device, Compact Disc-ROM (CD-ROM), Digital Versatile Discs (DVDs), or other forms of It can be stored on optical storage devices, magnetic cassettes. Alternatively, it may be stored in a memory composed of a combination of some or all of these. In addition, each configuration memory may be included in multiple numbers.

In addition, the program may be performed through a communication network such as the Internet, an Intranet, a Local Area Network (LAN), a Wide LAN (WLAN), or a Storage Area Network (SAN), or a communication network composed of a combination thereof. It can be stored on an attachable storage device that can be accessed. Such a storage device may be connected to a device performing various embodiments of the present disclosure through an external port. Also, a separate storage device on a communication network may be connected to a device performing various embodiments of the present disclosure.

In the specific embodiments of the present disclosure described above, components included in the disclosure are expressed in singular or plural numbers according to the specific embodiments presented. However, singular or plural expressions are selected appropriately for the presented situation for convenience of explanation, and the present disclosure is not limited to singular or plural components, and even components expressed in plural are composed of the singular number or singular. Even the expressed components may be composed of a plurality.

Meanwhile, in the detailed description of the present disclosure, specific embodiments have been described, but various modifications are possible without departing from the scope of the present disclosure. Therefore, the scope of the present invention should not be limited to the described embodiments and should not be defined, but should be defined by the scope of the claims described later as well as those equivalent to the scope of these claims. That is, it is obvious to those skilled in the art that other modifications based on the technical idea of the present disclosure are possible. In addition, each of the above embodiments can be operated in combination with each other as needed. For example, a base station and a terminal may be operated by combining parts of the methods proposed in the present disclosure. In addition, although the above embodiments have been presented based on 5G and NR systems, other modifications based on the technical idea of the above embodiments may be implemented in other systems such as LTE, LTE-A, and LTE-A-Pro systems.

Meanwhile, in the detailed description of the present disclosure, specific embodiments have been described, but various modifications are possible without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited to the described embodiments and should not be defined, but should be defined by not only the scope of the claims to be described later, but also those equivalent to the scope of these claims.

Claims (2)

In a wireless communication system, a terminal,
transceiver; and
A processor coupled to the transceiver; includes,
the processor,
control to determine whether to extend the deregistration timer;
When extending the deregistration timer, control to transmit a UL NAS TRANSPORT message including a first deregistration timer value to an Access and Mobility Management Function (AMF),
Control to receive a DL NAS TRANSPORT message including a second deregistration timer value determined based on the UL NAS TRANSPORT message from the AMF, and
Controlling to apply the second deregistration timer value to the deregistration timer, the terminal. AMF in a wireless communication system,
transceiver; and
A processor coupled to the transceiver; includes,
the processor,
Control to receive a UL NAS TRANSPORT message including a first deregistration timer value from the terminal,
Control to determine a second deregistration timer value based on the UL NAS TRANSPORT message, and
Controlling to transmit a DL NAS TRANSPORT message including the second deregistration timer value to the terminal, AMF.

Images