KR20160135432A - A method for perform updating mobility management changing from 4g system to 2g/3g system and an user equipment for the same - Google Patents

Abstract

A method for performing a mobility management update procedure of a wireless communication system and a terminal using the same, comprising: connecting a terminal to a fourth generation wireless communication system; Deactivating an idle mode signaling reduction (ISR); Wherein the ISR is deactivated and the terminal accesses a second or third generation wireless communication system; And performing a location area update or a combined routing area update based on the expiration of the first timer, wherein the first timer is T3412, wherein the first timer is a timer that periodically reports the operability of the terminal Is provided.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for performing a mobility management update when a system is changed to a 2G / 3G communication system in a 4G communication system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication system, and more particularly, to performing a mobility management update when a system is changed to a 2G / 3G communication system in a 4G communication system.

As an example of a wireless communication system to which the present invention can be applied, a 3GPP LTE (Third Generation Partnership Project) Long Term Evolution (LTE) communication system will be schematically described.

An E-UMTS network structure is illustrated as an example of a wireless communication system. The Evolved Universal Mobile Telecommunications System (E-UMTS) system evolved from the existing Universal Mobile Telecommunications System (UMTS), and is currently undergoing basic standardization work in 3GPP. In general, the E-UMTS may be referred to as an LTE (Long Term Evolution) system. For details of the technical specifications of UMTS and E-UMTS, refer to Release 7 and Release 8 of the " 3rd Generation Partnership Project (Technical Specification Group Radio Access Network ").

The E-UMTS includes an access gateway (AG) located at the end of a user equipment (UE), a base station (eNode B) and a network (E-UTRAN) and connected to an external network. The base station may simultaneously transmit multiple data streams for broadcast services, multicast services, and / or unicast services.

The base station has one or more cells. The cell is set to one of the bandwidths of 1.44, 3, 5, 10, 15, and 20 MHz, and provides downlink or uplink transmission services to the plurality of UEs. Different cells may be set up to provide different bandwidths. The base station controls data transmission / reception for a plurality of terminals. The base station transmits downlink scheduling information for downlink (DL) data, and notifies the UE of time / frequency region, coding, data size, and HARQ related information to be transmitted to the UE. In addition, the base station transmits uplink scheduling information to uplink (UL) data, and notifies the UE of time / frequency domain, coding, data size, and HARQ related information that the UE can use. An interface for transmitting user traffic or control traffic may be used between the base stations. The Core Network (CN) can be composed of an AG and a network node for user registration of the UE. The AG manages the mobility of the terminal in units of TA (Tracking Area) composed of a plurality of cells.

Wireless communication technologies have been developed to LTE based on WCDMA, but the demands and expectations of users and operators are continuously increasing. In addition, since other wireless access technologies are continuously being developed, new technology evolution is required to be competitive in the future. Cost reduction per bit, increased service availability, use of flexible frequency band, simple structure and open interface, and proper power consumption of terminal.

In a wireless communication system, a transmission equipment at a base station or an access device transmits a signal over a geographic area called a cell. As technology evolved, more advanced equipment was introduced that could provide services that were not previously possible. This advanced equipment may include, for example, an evolved universal terrestrial radio access network (E-UTRAN), an evolved node B (eNB), a base station or other systems and devices. Such advanced or next generation equipment is called long-term evolution (LTE) equipment, and packet-based networks using such equipment are often referred to as evolved packet systems (EPS). An access device may be a conventional base station that can provide a user agent (UA), such as a user equipment (UE) or a mobile equipment (ME) Or an LTE eNB (Evolved Node B, evolved Node B).

In a mobile communication system, such as an E-UTRAN, an access device provides wireless access to one or more UAs. The access device includes a packet scheduler that allocates uplink (UL) and downlink (DL) data transmission resources between all UAs in communication with the access device. The function of the scheduler may include, for example, dividing the available air interface capacity between UAs, determining the resources (e.g., subcarrier frequency and timing) to be used for packet data transmission of each UA, ≪ / RTI > The scheduler allocates physical layer resources for PDSCH (Physical Downlink Shared Channel) and PUSCH (physical uplink shared channel) data transmission, and transmits scheduling information to the UA through a control channel do. The UA refers to the scheduling information for the timing, frequency, data block size, modulation and coding of the uplink and downlink transmissions.

On the other hand, when a Circuit Switched (CS) incoming call occurs, the mobile communication core equipment (hereinafter, referred to as mobile communication core equipment) transmits a mobility management object (hereinafter referred to as a mobility management entity) (CS) paging for a CS incoming call to a terminal (hereinafter referred to as UE).

In this case, in the 3GPP standard specification, the implicit detach timer of the mobility management entity expires, and mobility management can perform update according to the state of T3412 and T3323 as a method for preventing CS paging reception failure However, when the idle mode signaling reduction (hereinafter referred to as ISR) is deactivated, T3412 and T3323 do not operate and the mobility management can not perform the update. Therefore, a method for preventing CS paging reception failure even when the ISR is deactivated is required.

It is an object of the present invention to provide a method for preventing CS paging reception failure when the ISR is inactivated and a terminal performing the method.

The technical problems to be solved by the present invention are not limited to the technical problems and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a method for performing a mobility management update procedure in a wireless communication system, the method comprising: connecting a terminal to a 4G (fourth generation wireless communication) system; The terminal having the ISR disabled; The ISR is deactivated and the terminal accesses 2G (second generation wireless communication) or 3G (third generation wireless communication) system; And performing a location area update or a combined routing area update based on the expiration of the first timer, wherein the first timer provides T3412.

Also, there is provided a terminal performing a mobility management update procedure of a wireless communication system, the terminal comprising: a radio frequency module; And a processor for controlling the radio frequency module, wherein the terminal is connected to a 4G system, the ISR is deactivated, the ISR is deactivated, the terminal is connected to a 2G or 3G system, and the first timer And to perform a location area update or a combined routing area update based on the expiration, wherein the first timer provides T3412.

Preferably, based on a second timer to deactivate the ISR, the second timer provides T3423 and the second timer is an ISR deactivation timer.

Preferably, it is performed when the second timer, which deactivates the ISR, has expired.

According to the present invention, a mobility management update procedure based on T3412 can be performed to prevent a failure to receive a calling call that is a circuit change.

In addition, the mobility management update procedure can be simplified because the mobility management update procedure is performed only according to T3412, irrespective of the ISR activation and the T3423 status.

In addition, since the mobility management update procedure is performed according to T3412, it is not necessary to drive the periodic location area update timer according to T3412, and the mobility management entity defined for the case where the implicit detach timer of the mobility management entity expires, There is an advantage that the update procedure of the mobility management can be performed without the procedure of the support node.

The effects obtainable in the embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be obtained from the description of the embodiments of the present invention described below by those skilled in the art Can be clearly understood and understood. In other words, undesirable effects of implementing the present invention can also be obtained by those skilled in the art from the embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. It is to be understood, however, that the technical features of the present invention are not limited to the specific drawings, and the features disclosed in the drawings may be combined with each other to constitute a new embodiment. Reference numerals in each drawing may refer to structural elements or steps of the invention.
FIG. 1 shows an example of a wireless communication system, which shows components that represent wireless communication.
2 is a diagram illustrating that a mobile communication core equipment transmits paging for a calling call, which is a circuit change, to a terminal through a mobility management entity.
3 is a diagram illustrating an example in which a mobility management entity transmits CS paging to a mobile station, according to an embodiment of the present invention.
FIG. 4 illustrates a procedure in which the implicit detach timer of the mobility management entity expires and the ISR is deactivated, according to an embodiment of the present invention.
FIG. 5 is a flowchart illustrating a procedure when an implicit detach timer of a mobility management entity expires and an ISR is activated, according to an embodiment of the present invention.
FIG. 6 illustrates an example in which the update procedure of the mobility management is not performed when the ISR is inactivated in the UE according to an embodiment of the present invention.
FIG. 7 shows an embodiment in which the present invention is applied, and shows a method of performing an update procedure based on T3412 when the ISR is inactivated.
FIG. 8 shows another example of a method by which an update procedure based on T3412 can be performed when the ISR is deactivated, according to an embodiment to which the present invention is applied.

The following description is to be understood as illustrative and non-limiting, such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (FDMA), single carrier frequency division multiple access And can be used in various wireless access systems. CDMA may be implemented in radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented in wireless technologies such as GSM (Global System for Mobile Co mobility management services) / GPRS (General Packet Radio Service) / EDGE (Enhanced Data Rates for GSM Evolution). OFDMA may be implemented with wireless technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and EUTRA (Evolved UTRA). UTRA is part of the Universal Mobile Telecommunications System (UMTS). 3GPP (3rd Generation Partnership Project) LTE (Long Term Evolution) is part of E-UMTS (Evolved UMTS) using E-UTRA, adopts OFDMA in downlink and SC-FDMA in uplink. LTE-A (Advanced) is an evolved version of 3GPP LTE. For clarity of description, 3GPP LTE / LTE-A is mainly described, but the technical idea of the present invention is not limited thereto. In addition, the specific terms used in the following description are provided to aid understanding of the present invention, and the use of such specific terms may be changed into other forms without departing from the technical idea of the present invention.

In a control plane and a user plane structure of a radio interface protocol between a terminal based on the 3GPP radio access network standard and an E-UTRAN, a control plane is a user equipment (UE) And the control message that the network uses to manage the call. The user plane means a path through which data generated in the application layer, for example, voice data or packet data, is transmitted.

The physical layer as the first layer provides an information transfer service to an upper layer using a physical channel. The physical layer is connected to a medium access control layer (upper layer) through a transport channel. Data moves between the MAC layer and the physical layer over the transport channel. Data is transferred between the transmitting side and the receiving side physical layer through the physical channel. The physical channel utilizes time and frequency as radio resources. Specifically, the physical channel is modulated in an OFDMA (Orthogonal Frequency Division Multiple Access) scheme in the downlink, and is modulated in a single carrier frequency division multiple access (SCFDMA) scheme in the uplink.

The Medium Access Control (MAC) layer of the second layer provides a service to a radio link control (RLC) layer, which is an upper layer, through a logical channel. The RLC layer of the second layer supports reliable data transmission. The function of the RLC layer may be implemented as a functional block in the MAC. The Packet Data Convergence Protocol (PDCP) layer of the second layer performs a header compression function to reduce unnecessary control information in order to efficiently transmit IP packets such as IPv4 and IPv6 in a wireless interface with a narrow bandwidth.

The Radio Resource Control (RRC) layer located at the bottom of the third layer is defined only in the control plane. The RRC layer is responsible for the control of logical channels, transport channels and physical channels in connection with the configuration, re-configuration and release of radio bearers (RBs). RB denotes a service provided by the second layer for data transmission between the UE and the network. To this end, the terminal and the RRC layer of the network exchange RRC messages with each other. If there is an RRC connection (RRC Connected) between the UE and the RRC layer of the network, the UE is in the RRC Connected Mode, otherwise it is in the RRC Idle Mode. The Non-Access Stratum (NAS) layer at the top of the RRC layer performs functions such as session management and mobility management.

One cell constituting the base station eNB is set to one of the bandwidths of 1.4, 3, 5, 10, 15, and 20 MHz to provide downlink or uplink services to a plurality of UEs. Different cells may be set up to provide different bandwidths.

A downlink transmission channel for transmitting data from a network to a terminal includes a BCH (Broadcast Channel) for transmitting system information, a PCH (Paging Channel) for transmitting a paging message, a downlink SCH (Shared Channel) for transmitting user traffic or control messages, have. In case of a traffic or control message of a downlink multicast or broadcast service, it may be transmitted through a downlink SCH, or may be transmitted via a separate downlink multicast channel (MCH). Meanwhile, the uplink transmission channel for transmitting data from the UE to the network includes a random access channel (RACH) for transmitting an initial control message and an uplink SCH (shared channel) for transmitting user traffic or control messages. (BCCH), a PCCH (Paging Control Channel), a CCCH (Co mobility management on Control Channel), an MCCH (Multicast Control Channel), and a MAC And MTCH (Multicast Traffic Channel).

Hereinafter, the mobility management entity in the wireless communication system will explain contents for transmitting circuit change paging (CS) to the terminal.

FIG. 1 shows an example of a wireless communication system, which shows components that represent wireless communication. Referring to FIG. 1, a UE (hereinafter referred to as a UE) includes a serving GPRS support node (SGSN) (hereinafter referred to as a packet switching support node), a MME (mobility management entity) And a Mobile Swiching Center / Visitors Location Register (MSC / VLR) (hereinafter, referred to as mobile communication core equipment).

2 is a diagram illustrating that a mobile communication core equipment transmits paging for a calling call, which is a circuit change, to a terminal through a mobility management entity.

If the terminal is in the 4G system (S210), the combined tracking area updating (TAU) may be performed (S220). As the combination tracking area update is performed, SGs association information (SGs association) may be generated between the mobility management entity and the mobile communication core equipment (S230). Thereafter, when a calling call that is a circuit change occurs (S240), the mobile communication core equipment may request the mobility management entity to perform CS paging (S250). The mobility management entity may forward CS paging to the SGSN when the ISR is activated (S260). The mobility management entity may forward the CS paging to the terminal (S270).

3 is a diagram illustrating an example in which a mobility management entity transmits CS paging to a mobile station, according to an embodiment of the present invention.

If the terminal is in the 4G system (S310), a combined TAU update (combined TAU) may be performed (S320). As the combination tracking area update is performed, an SGs association may be created between the mobility management entity and the mobile communication core equipment (S330). If the connection is released (S340), the terminal may perform the tracking area update procedure using the first timer in the 4G system (S350). Here, the first timer is a P-TAU timer and can be represented by T3412. The first timer is a timer that periodically reports the availability of the terminal and is maintained by the packet switching support node. Additionally, the first timer time value used by the mobility management entity is set to be four minutes longer than the first timer used by the terminal

The mobility management entity may determine whether the terminal is valid through an implicit detach timer. CS paging can be transmitted to the UE until the implicit detach timer expires. The implicit detach timer may be restarted by performing an update procedure of mobility management at the terminal. After the implicit detach timer expires, the CS paging can not be transmitted to the UE until the update procedure of the mobility management is performed. If the terminal is disconnected, the mobility management entity may inform the mobile communication core equipment that the terminal is disconnected (S360).

FIG. 4 illustrates a procedure in which the implicit detach timer of the mobility management entity expires and the ISR is deactivated, according to an embodiment of the present invention.

The terminal is in the 4G system (S410), and an SGs association can be created between the mobility management entity and the mobile communication core equipment (S420). Then, the ISR may be deactivated (S430). When the implicit detach timer expires and the terminal is disconnected, the mobility management entity transmits a signal indicating that the terminal is disconnected to the mobile communication core equipment (S440), and the mobile communication core equipment notifies the mobility management entity that the terminal is disconnected The notification can be informed that the signal is received (S450). Accordingly, the mobile communication core equipment can not transmit the CS paging request to the terminal.

At this time, if the terminal enters the 2G / 3G system, the terminal may perform combined routing area updating (Routing Area Updating) (S460). Accordingly, SGs association between the packet switching support node and the mobile communication core equipment is generated (S470). Accordingly, the CS paging can be delivered to the terminal through the packet switching support node.

As another example, after the expiration of T3412, the UE performs a Location Area Updating (LAU) (S480) so that the mobile communication core equipment can deliver CS paging to the UE.

FIG. 5 is a flowchart illustrating a procedure when an implicit detach timer of a mobility management entity expires and an ISR is activated, according to an embodiment of the present invention.

The terminal may be in the 4G system (S510), and an SGs association may be created between the mobility management entity and the mobile communication core equipment (S520). Then, the ISR may be activated (S530).

When the second timer expires, the terminal may partially disable the ISR (S540). The second timer is an ISR deactivation ISR timer, which can be set for both the UE and the packet-switched support node. If the P-TAU / RAU timer expires while the UE is located in another RAT, the P- In the situation that it can not perform, it starts both in terminal and network. The UE context is maintained at the packet-switched core node while the deactivate ISR timer is running. Similar to the P-RAU timer / P-TAU timer, the time value of the ISR deactivation ISR timer used by the network is set to be 4 minutes longer than the timer used by the UE. According to the current 3GPP specification, the deactivate ISR timer used in GERAN / UTRAN is denoted as T3323, and the deactivated ISR timer used in E-UTRAN is denoted as T3423. If the terminal partially deactivates the ISR, the mobility management update procedure can not be performed. In order to prepare for this, the mobility management entity transmits an EPS detach indication (EPS Detach Indication) to the mobile communication core device (S551), and the mobile communication core device can transmit the reception acknowledgment to the mobility management entity (S552). The mobile core device then restarts the implicit detach timer. Then, the mobility management entity sends a signal to the packet switching support node in step S553, and the packet switching support node transmits an IMSI detach request to the terminal in step S554. When the terminal enters the 2G / 3G system in step S570 ), It may be guided to perform the combined routing area update (S580).

As another example, the mobility management entity transmits the IMSI Detach Indication to the mobile communication core device (S561), and the mobile communication core device may transmit the reception confirmation to the mobility management entity (S562). Since the time T3423 has expired, if the terminal enters the 2G / 3G system (S570), it may induce the local area update or the combined routing area update to be performed (S580).

FIG. 6 illustrates an example in which the update procedure of the mobility management is not performed when the ISR is inactivated in the UE according to an embodiment of the present invention.

The terminal is in the 4G system (S610), and an SGs association can be created between the mobility management entity and the mobile communication core equipment (S620). Then, the ISR may be activated (S630). At this time, if the terminal enters the 2G / 3G system (S640), the location area update procedure and the periodic location area update timer may not start because the ISR is activated.

If the terminal partially deactivates the ISR (S650), T3423 does not start (S660). The mobility management entity transmits the EPS detach indication to the mobile communication core device and the mobile communication core device can transmit the reception acknowledgment to the mobility management entity. The mobile core device then restarts the implicit detach timer. Then, the mobility management entity transmits a signal to the packet switching support node (S672), and the packet switching support node can transmit the IMSI detach request to the terminal (S674) to induce the combined routing area update to be performed S676). Thus, it is possible to receive CS paging.

However, since there is no condition for performing the mobility management update procedure in the 2G / 3G system, there is a problem that the CS paging can not be received (S680).

Hereinafter, a method for performing an update procedure of mobility management in order to solve the above problem is proposed.

FIG. 7 shows an embodiment in which the present invention is applied, and shows a method of performing an update procedure based on T3412 when the ISR is inactivated.

The terminal is in the 4G system (S710), and an SGs association can be created between the mobility management entity and the mobile communication core equipment (S720). T3412 expires, and T3423 can start. When T3423 expires, the terminal may deactivate the ISR (S730). After the implicit deactivation timer of the mobility management entity expires, the mobility management entity transmits the IMSI Detach Indication to the mobile communication core device, the mobile communication core device can transmit the reception acknowledgment to the mobility management entity, A signal can be transmitted to the packet switching support node (S740). However, the packet switching support node does not need to send an IMSI detach request to the terminal. When the terminal enters the 2G / 3G system (S750), it may induce the local area update or the combined routing area update because the T3412 has expired (S760).

Since the mobility management update procedure is performed through T3412, the mobility management update procedure can be performed even if the ISR is inactivated.

FIG. 8 shows another example of a method by which an update procedure based on T3412 can be performed when the ISR is deactivated, according to an embodiment to which the present invention is applied.

When the ISR is activated (S810), the terminal enters the 2G / 3G system (S820), and the terminal can be partially deactivated (S830).

Even if T3412 expires, T3423 may not start (S840).

Even if T3423 does not start, the combined routing area update can be performed because T3412 has expired (S850).

Even if T3423 does not start, the location area update can be performed because T3412 has expired (S860).

T3412, it is possible to prevent a failure in receiving a calling call, which is a circuit change, by performing the mobility management update procedure. In addition, the mobility management update procedure can be simplified because the mobility management update procedure is performed only according to T3412, irrespective of the ISR activation and the T3423 status. In addition, since the mobility management update procedure is performed according to T3412, the periodic location area update timer may not be driven at T3412, and the mobility management entity defined for the case where the implicit detach timer of the mobility management entity expires, There is an advantage that the update procedure of the mobility management can be performed without the procedure of the support node.

In the present invention, a terminal includes a processor, a memory and an RF unit. The processor may be configured to implement the procedures and / or methods suggested by the present invention. The memory is coupled to the processor and stores various information related to the operation of the processor. The RF unit is coupled to the processor and transmits and / or receives radio signals. The base station and / or user equipment may have a single antenna or multiple antennas.

The embodiments described above are those in which the elements and features of the present invention are combined in a predetermined form. Each component or feature shall be considered optional unless otherwise expressly stated. Each component or feature may be implemented in a form that is not combined with other components or features. It is also possible to construct embodiments of the present invention by combining some of the elements and / or features. The order of the operations described in the embodiments of the present invention may be changed. Some configurations or features of certain embodiments may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments. It is clear that the claims that are not expressly cited in the claims may be combined to form an embodiment or be included in a new claim by an amendment after the application.

Embodiments in accordance with the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of hardware implementation, an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) field programmable gate arrays, processors, controllers, microcontrollers, microprocessors, and the like.

In the case of an implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, a procedure, a function, or the like which performs the functions or operations described above. The software code can be stored in a memory unit and driven by the processor. The memory unit may be located inside or outside the processor, and may exchange data with the processor by various well-known means.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit of the invention. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Although the method for performing the mobility management update procedure of the wireless communication system and the terminal using the method have been described with reference to the example applied to the 3GPP LTE system, the present invention can be applied to various wireless communication systems other than the 3GPP LTE system.

Claims (10)

A method for performing a mobility management update procedure of a wireless communication system,
Connecting the terminal to a fourth generation wireless communication system;
Deactivating an idle mode signaling reduction (ISR);
Wherein the ISR is deactivated and the terminal accesses a second or third generation wireless communication system; And
Performing a location area update or a combined routing area update based on an expiration of a first timer,
Wherein the first timer is T3412, and wherein the first timer is a timer that periodically reports the operability of the terminal. The method according to claim 1,
Wherein deactivating the ISR is performed based on a second timer,
Wherein the second timer is T3423 and the second timer is an ISR deactivation timer. 3. The method of claim 2,
Wherein deactivating the ISR is performed when the second timer expires. A method for performing a mobility management update procedure of a wireless communication system,
Connecting the terminal to the 4G system;
Connecting the terminal to a 2G or 3G system; And
Connecting the terminal to a 2G or 3G system and deactivating the ISR;
Performing a location area update or a combined routing area update based on an expiration of a first timer,
Characterized in that the first timer is T3412 and the first timer is a timer which periodically reports the operational possibility of the terminal 5. The method of claim 4,
In performing the location area update or the combined routing area update, the second timer is not started,
Wherein the second timer is T3423 and the second timer is an ISR deactivation timer. 1. A terminal performing a mobility management update procedure of a wireless communication system,
A radio frequency module; And
And a processor for controlling the radio frequency module,
The processor comprising:
Wherein the terminal is connected to a fourth generation wireless communication system, deactivates an idle mode signaling reduction (ISR), the ISR is deactivated, the terminal is connected to a second or third generation wireless communication system, Control to perform a location area update or a combined routing area update based on the expiration,
Wherein the first timer is T3412, and the first timer is a timer that periodically reports the operation possibility of the terminal. The method according to claim 6,
Wherein the processor controls the ISR to be performed based on the second timer when deactivating the ISR, wherein the second timer is T3423 and the second timer is an ISR deactivation timer. 8. The method of claim 7,
Wherein the processor controls the second timer to be performed when the second timer expires when the ISR is deactivated. 1. A terminal performing a mobility management update procedure of a wireless communication system,
A radio frequency module; And
And a processor for controlling the radio frequency module,
The processor comprising:
The terminal is connected to the 4G system, the terminal is connected to the 2G or 3G system, the terminal is connected to the 2G or 3G system, the ISR is deactivated, and based on the expiration of the first timer, Control to perform the update,
Wherein the first timer is T3412, and the first timer is a timer that periodically reports the operation possibility of the terminal. 10. The method of claim 9,
Wherein the processor is configured to control not to start a second timer when performing the location area update or the combined routing area update,
Wherein the second timer is T3423 and the second timer is an ISR deactivation timer.

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