KR20220068895A - METHOD AND APPARATUS FOR HANDLING PROFILES WITH REMOVABLE MEP(MULTIPLE ENABLED PROFILES) SUPPORITNG eUICC - Google Patents

Abstract

The present invention relates to a communication technique and a system for converging a 5G communication system with IoT technology to support a higher data rate after a 4G system. According to the present invention, a method for setting a default profile of a terminal including a removable embedded universal integrated circuit card (eUICC) supporting multiple enabled profiles (MEP) comprises the following processes of: receiving a first message requesting activation of a first profile selected by a user of the terminal from a local profile assistant (LPA) of the terminal; checking whether the first profile is activated and checking a profile policy rule (PPR) for the first profile on the basis of the first message to determine whether the first profile can be activated; when it is determined that activation of the first profile is possible as a checking result, performing an activation procedure for the first profile; and setting the first profile having performed the activation procedure as a default profile.

Description

METHOD AND APPARATUS FOR HANDLING PROFILES WITH REMOVABLE MEP (MULTIPLE ENABLED PROFILES) SUPPORITNG eUICC }

The present disclosure relates to a method and apparatus for communication connection by downloading, installing, and activating one or more communication services in a terminal in a wireless communication system. In particular, the present disclosure relates to a method of processing a profile between an eUICC and a UE supporting multiple profile activation (MEP) for this purpose.

Efforts are being made to develop an improved 5G communication system or pre-5G communication system in order to meet the increasing demand for wireless data traffic after commercialization of the 4G communication system. For this reason, the 5G communication system or the pre-5G communication system is called a system after a 4G network (Beyond 4G Network) communication system or a Long Term Evolution (LTE) system after (Post LTE). In order to achieve a high data rate, the 5G communication system is being considered for implementation in a very high frequency (mmWave) band (eg, such as a 60 gigabyte (60 GHz) band). In order to alleviate the path loss of radio waves and increase the propagation distance of radio waves in the ultra-high frequency band, in the 5G communication system, beamforming, massive MIMO, and Full Dimensional MIMO (FD-MIMO) are used. ), array antenna, analog beam-forming, and large scale antenna technologies are being discussed. In addition, for network improvement of the system, in the 5G communication system, an evolved small cell, an advanced small cell, a cloud radio access network (cloud radio access network: cloud RAN), an ultra-dense network (ultra-dense network) , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation Technology development is underway. In addition, in the 5G system, advanced coding modulation (ACM) methods such as FQAM (Hybrid FSK and QAM Modulation) and SWSC (Sliding Window Superposition Coding), and advanced access technologies such as Filter Bank Multi Carrier (FBMC), NOMA (non-orthogonal multiple access), and sparse code multiple access (SCMA) are being developed.

On the other hand, the Internet is evolving from a human-centered connection network where humans create and consume information to an Internet of Things (IoT) network that exchanges and processes information between distributed components such as objects. Internet of Everything (IoE) technology, which combines big data processing technology through connection with cloud servers, etc. with IoT technology, is also emerging. In order to implement IoT, technology elements such as sensing technology, wired and wireless communication and network infrastructure, service interface technology, and security technology are required. , M2M), and MTC (Machine Type Communication) are being studied. In the IoT environment, an intelligent IT (Internet Technology) service that collects and analyzes data generated from connected objects and creates new values in human life 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 appliance, advanced medical service, etc. can be applied to

Accordingly, various attempts are being made to apply the existing 4G and 5G communication systems to the IoT network. For example, 4G and 5G communication technologies such as sensor network, machine to machine (M2M), and MTC (Machine Type Communication) are developed by techniques such as beam forming, MIMO, and array antenna. it is being implemented.

A UICC (Universal Integrated Circuit Card) is a smart card inserted into a mobile communication terminal and used, and is also called a UICC card. An access control module for accessing a network of a mobile communication service provider may be included in the UICC. Examples of such an access control module include a Universal Subscriber Identity Module (USIM), a Subscriber Identity Module (SIM), and an IP Multimedia Service Identity Module (ISIM). A UICC including a USIM is usually called a USIM card. Similarly, a UICC including a SIM module is commonly referred to as a SIM card. In the following description of the present disclosure, the term "SIM card" will be used in a general sense including a UICC card, a USIM card, a UICC including an ISIM, and the like. That is, even for a SIM card, the technical application can be equally applied to a USIM card, an ISIM card, or a general UICC card.

The SIM card stores personal information of mobile communication subscribers, and performs subscriber authentication and traffic security key generation when accessing a mobile communication network to enable safe mobile communication use.

The SIM card is generally manufactured as a dedicated card for a corresponding operator at the request of a specific mobile communication operator when the card is manufactured, and authentication information for network access of the corresponding operator, for example, a USIM application and an International Mobile Subscriber Identity (IMSI) ), K value, OPc value, etc. are loaded on the card in advance and shipped. Accordingly, the manufactured SIM card is delivered to the subscriber by the corresponding mobile communication service provider and provided to subscribers, and then, if necessary, management such as installation, modification, and deletion of applications in the UICC is also performed using technologies such as OTA (Over The Air). can do. Subscribers can use the network and application services of the mobile communication operator by inserting the UICC card into their own mobile communication terminal, and when replacing the terminal, the UICC card stored in the UICC card Authentication information, mobile phone number, personal phone book, etc. can be used as it is in the new terminal.

However, the SIM card is inconvenient for a mobile communication terminal user to receive services from other mobile carriers. A user of a mobile communication terminal has the inconvenience of having to physically obtain a SIM card in order to receive a service from a mobile communication service provider. For example, when traveling to another country, it is inconvenient to obtain a local SIM card in order to receive a local mobile communication service. In the case of the roaming service, the above inconvenience is solved to some extent, but there is a problem in that the service cannot be received if there is an expensive fee and a contract between the telecommunication companies is not made.

On the other hand, when the SIM module is remotely downloaded and installed on the UICC card, this inconvenience can be largely solved. That is, a SIM module of a mobile communication service that a user wants to use at a desired time can be downloaded to the UICC card. Such a UICC card can also be used by downloading and installing a plurality of SIM modules, and selecting and using only one SIM module among them. Such a UICC card may or may not be fixed to the terminal. In particular, a UICC that is fixed to a terminal and used is called an eUICC (embedded UICC). In general, the eUICC refers to a UICC card that is used by being fixed to the terminal, and can be selected by downloading a SIM module remotely. In the present disclosure, a UICC card that can remotely download and select a SIM module will be collectively referred to as an eUICC. That is, among UICC cards that can be remotely downloaded and selected, UICC cards fixed to the terminal and UICC cards that are not fixed are collectively used as eUICCs. In addition, the downloaded SIM module information will be collectively used as the term Profile.

Even if there is more than one profile in the eUICC, only one profile can be enabled at the same time. Therefore, even if the terminal supports two basebands and two or more profiles exist in the corresponding eUICC, the terminal cannot support the Dual SIM function that enables two profiles to be used simultaneously in one mobile phone. As a way to solve this problem, it is possible to mount two eUICC(s) in the terminal, but this requires an additional eUICC module and a physical interface to connect the eUICC module to the baseband of the modem. shall bear the cost of purchasing additional eUICC modules and physical pins for physical interfaces. In addition, securing the mounting space of the terminal according to the introduction of the module and the physical pin is also a problem.

When an MEP (Multiple Enabled Profiles) support eUICC in which a plurality of profiles can be activated is inserted in the terminal, the terminal or the eUICC or the terminal and the eUICC determine a method for profile processing such as the number of profiles to maintain activation or deactivation, and accordingly We need to handle the behavior differently, but there is currently no consideration for it, so we solve this problem.

In particular, when a removable MEP-supported eUICC is inserted into the terminal, when the profile set in the metadata is activated and inserted in the "Cannot be deactivated" operator policy (PPR1: Profile Policy Rule 1) in the eUICC, the terminal or the MEP-supported eUICC No consideration of how to handle the profile solves this problem.

A method for setting a default profile of a terminal including an embedded Universal Integrated Circuit Card (eUICC) supporting Multiple Enabled Profiles (MEP) according to an embodiment of the present disclosure is provided from a Local Profile Assistant (LPA) of the terminal to the user of the terminal. The process of receiving a first message requesting activation of the first profile selected by determining whether the first profile can be activated; performing an activation processing procedure for the first profile when it is determined that activation of the first profile is possible as a result of the confirmation; and the activation processing procedure and setting the first profile that has been performed as a default profile.

In the method for setting a default profile of a terminal including an eUICC supporting MEP according to another embodiment of the present disclosure, when a plurality of profiles are activated in the eUICC after performing an activation processing procedure for the first profile, the activation The process of confirming whether the PPR for the activated first profile is a specific PPR, and when the PPR for the activated first profile is a specific PPR, further comprising the steps of setting the activated profile as a default profile do it with

In the method for setting a default profile of a terminal including an eUICC supporting MEP according to another embodiment of the present disclosure, when the eUICC is used in another terminal before being inserted into the terminal, the number of ports allocated to the eUICC and the The method further comprises the step of determining whether a state of a profile to which a port is not assigned is changed based on the information on the default profile.

A terminal including an embedded Universal Integrated Circuit Card (eUICC) supporting Multiple Enabled Profiles (MEP) according to an embodiment of the present disclosure includes a transceiver; and controlling the transceiver to receive a first message requesting activation of a first profile selected by a user of the terminal from a Local Profile Assistant (LPA) of the terminal, and based on the first message, the first profile is activated and a Profile Policy Rule (PPR) for the first profile is checked to determine whether activation of the first profile is possible, and when it is determined that activation of the first profile is possible as a result of the check, the first profile and a control unit configured to perform an activation processing procedure for one profile and set the first profile, which has performed the activation processing procedure, as a default profile.

The control unit of the terminal including the eUICC supporting MEP according to another embodiment of the present disclosure, after performing an activation processing procedure for the first profile, when there are a plurality of profiles activated in the eUICC, the activated second It is checked whether the PPR for the first profile is a specific PPR, and when the PPR for the activated first profile is a specific PPR, the activated profile is set as a default profile.

The control unit of the terminal including the eUICC supporting MEP according to another embodiment of the present disclosure, when the eUICC is used in another terminal before being inserted into the terminal, the number of ports allocated to the eUICC and the default profile It is characterized in that it is determined whether the state of the profile to which the port is not assigned is changed based on the information on the

In the terminal supporting MEP according to another embodiment of the present disclosure, the control unit of the terminal includes a profile set as a default profile through the second message received from the eUICC through the transceiver of the terminal in the initialization process of the terminal and the eUICC. It is characterized in that an activated port is determined, and a port for baseband connection is preferentially allocated to the corresponding port.

In the detachable eUICC supporting MEP according to another embodiment of the present disclosure, the control unit of the eUICC is configured to transfer the terminal to the MEP through a second message received through the transceiver of the eUICC in an initialization process between the terminal and the eUICC. It is characterized in that by judging whether or not it operates, deactivation of other activated profiles except for the profile set as the default profile or connection to a specific port is processed.

According to an embodiment of the present disclosure, when a user inserts an MEP removable eUICC in which one or more profiles are activated into an eSIM terminal that does not support eUICC or MEP mode, a method for selecting one of the activated profiles to provide.

According to an embodiment of the present disclosure, when initializing in the MEP mode between the terminal and the card, baseband connection to the default profile can be guaranteed, and Profile Policy Rule 1 (PPR1) is set. can be guaranteed to remain active.

According to an embodiment of the present disclosure, there is provided a method of using a baseband occupied by a profile that cannot be deactivated in the MEP mode by changing the connection to another profile or using a different UICC connection by a user.

1 is a diagram illustrating components of a wireless communication system according to an embodiment of the present disclosure.
2 is a diagram schematically illustrating an example of a connection between a current v2 embedded Universal Integrated Circuit Card (eUICC) that does not support MEP and a modem in a wireless communication system according to an embodiment of the present disclosure; FIG. to be.
3 is a diagram schematically illustrating an example of a connection between an eUICC and a modem according to the introduction of the concept of a virtual interface (which may be used in combination with a virtual interface, or a logical interface) in a wireless communication system according to an embodiment of the present disclosure; FIG. to be.
4 is a diagram illustrating a method for a terminal and an eUICC to process local profile activation when operating in an MEP mode according to an embodiment of the present disclosure.
5 is a diagram schematically illustrating a connection between a modem and an eUICC for maintaining an existing setting when a MEP-supporting terminal is rebooted in a wireless communication system according to an embodiment of the present disclosure.
6 is a diagram illustrating a method of setting a default profile by an MEP support eUICC inserted or fixed in a terminal according to an embodiment of the present disclosure.
7 is a diagram illustrating a process of processing a default profile setting in an LPA of a terminal according to an embodiment of the present disclosure.
8 is a diagram illustrating a method for an eUICC to determine profile processing by using default profile information in an initialization process between a terminal and an MEP eUICC according to an embodiment of the present disclosure.
9 is a diagram illustrating a method of processing profile handling by referring to default profile information in an eUICC when operating as a general eUICC in FIG. 8 according to an embodiment of the present disclosure.
10A and 10B are diagrams illustrating a method of processing profile handling with reference to default profile information in an eUICC and a terminal when operating as an MEP eUICC in FIG. 8 according to an embodiment of the present disclosure.
11A and 11B are diagrams illustrating a method of processing a port change (swap) to be used between profiles in a terminal operating in an MEP mode and an eUICC according to an embodiment of the present disclosure.
12 is a diagram schematically illustrating an internal structure of a terminal in a wireless communication system according to an embodiment of the present disclosure.
13 is a diagram illustrating a method of processing a change between a port to be used by a profile in a terminal operating in an MEP mode and an eUICC according to another embodiment of the present disclosure.
14 is a diagram illustrating a method of returning profile status information when a removable MEP-supported UICC is inserted into an MEP-non-supported eSIM terminal according to an embodiment of the present disclosure.
15 is a diagram illustrating a method of processing activation of a profile in a temporary activation state when a removable MEP-supported UICC is inserted into an MEP-non-supported eSIM terminal according to an embodiment of the present disclosure.
16 is a diagram illustrating a method of processing deactivation of a profile in a temporarily activated state when a removable MEP-supported UICC is inserted into an MEP-non-supported eSIM terminal according to an embodiment of the present disclosure.

Hereinafter, the operating principle of the present disclosure will be described in detail with reference to the accompanying drawings. In the following description of the present disclosure, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in the present disclosure, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification. For the same reason, some components are exaggerated, omitted, or schematically illustrated in the accompanying drawings. In addition, the size of each component does not fully reflect the actual size. In each figure, the same or corresponding elements are assigned the same reference numerals. Advantages and features of the technical idea according to the present disclosure, and a method of achieving them will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments allow the present disclosure to be complete, and those of ordinary skill in the art to which the present disclosure pertains. It is provided to fully understand the scope of the invention, and the present disclosure is only defined by the scope of the claims. Like reference numerals refer to like elements throughout. In addition, in the description of the present disclosure, if it is determined that a detailed description of a related function or configuration may unnecessarily obscure the gist of the technical idea according to the present disclosure, the detailed description thereof will be omitted. In addition, the terms to be described later are terms defined in consideration of functions in the present disclosure, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

Hereinafter, the base station, as a subject performing resource allocation of the terminal, may be at least one of gNode B, eNode B, Node B, a base station (BS), a radio access unit, a base station controller, or a node on a network. 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 a communication function. In the present disclosure, a downlink (DL) is a wireless transmission path of a signal transmitted from a base station to a terminal, and an uplink (UL) is a wireless transmission path of a signal transmitted from the terminal to a flag station. In addition, although LTE or LTE-A system may be described below as an example, embodiments of the present disclosure may be applied to other communication systems having a similar technical background or channel type. For example, 5G mobile communication technology (5G, new radio, NR) developed after LTE-A may be included in a system to which embodiments of the present disclosure can be applied, and 5G below is the existing LTE, LTE-A and It may be a concept that includes other similar services. In addition, the present disclosure may be applied to other communication systems through some modifications within a range that does not significantly depart from the scope of the present disclosure as judged by a person having skilled technical knowledge. At this time, it will be understood that each block of the flowchart diagrams and combinations of the flowchart diagrams may 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, such that the instructions performed by the processor of the computer or other programmable data processing equipment are not described in the flowchart block(s). It creates a means to perform functions. These computer program instructions may also be stored in a computer-usable or computer-readable memory that may direct a computer or other programmable data processing equipment to implement a function in a particular manner, and thus the computer-usable or computer-readable memory. It is also possible that the instructions stored in the flow chart block(s) produce an article of manufacture containing instruction means for performing the function described in the flowchart block(s). The computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operational steps are performed on the computer or other programmable data processing equipment to create a computer-executed process to create a computer or other programmable data processing equipment. It is also possible that instructions for performing the processing equipment 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 also possible for the functions recited in blocks to occur out of order. For example, two blocks shown one after another may in fact be performed substantially simultaneously, or it is possible that the blocks are sometimes performed in the reverse order according to the corresponding function. At this time, the term '~ unit' used in this embodiment means software or hardware components such as FPGA (Field Programmable Gate Array) or ASIC (Application Specific Integrated Circuit), and '~ unit' refers to what roles can be done However, '-part' is not limited to software or hardware. '~' may be configured to reside on an addressable storage medium or may be configured to refresh one or more processors. Accordingly, as an example, '~' indicates components such as software components, object-oriented software components, class components, and task components, and processes, functions, properties, and procedures. , subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables. The functions provided in the components and '~ units' may be combined into a smaller number 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 secure multimedia card. Also, in an embodiment, '~ unit' may include one or more processors.

First, terms used in the present disclosure are defined.

In the present disclosure, UICC is a smart card inserted and used in a mobile communication terminal, and personal information such as network access authentication information, phone book, and SMS of a mobile communication subscriber is stored to access mobile communication systems such as GSM, WCDMA, LTE, 5G, etc. It refers to a chip that enables secure mobile communication by performing subscriber authentication and traffic security key generation. UICC is loaded with communication applications such as SIM (Subscriber Identification Module), USIM (Universal SIM), and ISIM (IP Multimedia SIM) depending on the type of mobile communication network the subscriber accesses. It is possible to provide a high-level security function for mounting various application applications.

In the present disclosure, the eUICC (embedded UICC) is not limited to a security module embedded in the terminal, and includes a removable security module that can be inserted and removed from the terminal. eUICC can be installed by downloading a profile using OTA (Over The Air) technology. The eUICC can be named as a UICC that can download and install a profile.

In the present disclosure, the method of downloading and installing a profile using the OTA technology in the eUICC may be applied to a removable UICC that can be inserted and removed from the terminal as described above. For example, an embodiment of the present disclosure may be applied to a removable UICC that can be installed by downloading a profile using OTA technology.

In this disclosure, the term UICC may be used interchangeably with SIM, and the term eUICC may be used interchangeably with eSIM.

In the present disclosure, a profile may mean that an application, a file system, an authentication key value, etc. stored in the UICC are packaged in software form. In addition, the profile can be named as access information.

In the present disclosure, a USIM profile may have the same meaning as a profile or may mean that information included in a USIM application within the profile is packaged in a software form.

In the present disclosure, the profile server generates a profile, encrypts the generated profile, generates a profile remote management command, provides a function to encrypt the generated profile remote management command, or includes a function to support multiple profile activation of the terminal. As a server that can be used, it can be expressed as Subscription Manager Data Preparation (SM-DP), Subscription Manager Data Preparation plus (SM-DP+), or Subscription Manager Secure Routing (SM-SR).

The term 'terminal' or 'device' used in this disclosure is a mobile station (MS), user equipment (UE), user terminal (UT), wireless terminal, access terminal (AT), terminal, subscriber unit may be referred to as a (Subscriber Unit), Subscriber Station (SS), wireless device, wireless communication device, Wireless Transmit/Receive Unit (WTRU), mobile node, mobile or other terms. . Various embodiments of the terminal include a cellular phone, a smart phone having a wireless communication function, a personal digital assistant (PDA) having a wireless communication function, a wireless modem, a portable computer having a wireless communication function, and a digital camera having a wireless communication function. devices, gaming devices with wireless communication capabilities, music storage and playback appliances with wireless communication capabilities, Internet home appliances capable of wireless Internet access and browsing, as well as portable units or terminals incorporating combinations of such functions. have. In addition, the terminal may include a machine to machine (M2M) terminal and a machine type communication (MTC) terminal/device, but is not limited thereto. In the present disclosure, the terminal may be referred to as an electronic device or simply a device.

In the present disclosure, the terminal or device may include software or an application installed in the terminal or device to control the UICC or eUICC. The software or application may be referred to as, for example, a Local Profile Assistant (LPA). In the present disclosure, the eUICC identifier (eUICC ID) may be a unique identifier of the eUICC embedded in the terminal, and may be referred to as an EID.

In the present disclosure, an application protocol data unit (APDU) may be a message for a controller in a terminal or device to interwork with the eUICC.

In the present disclosure, a profile package may be used interchangeably with a profile or a term indicating a data object of a specific profile, and may be named as a profile TLV or a profile package TLV. The profile identifier is a unique identification number of the profile and may be referred to as ICCID. When the profile package is encrypted using an encryption parameter, it may be named as a Protected Profile Package (PPP) or a Protected Profile Package TLV (PPP TLV). When the profile package is encrypted using an encryption parameter that can only be decrypted by a specific eUICC, it may be named as a Bound Profile Package (BPP) or a Bound Profile Package TLV (BPP TLV). The profile package TLV may be a data set expressing information constituting a profile in a TLV (Tag, Length, Value) format.

In the present disclosure, AKA may indicate authentication and key agreement, and may indicate an authentication algorithm for accessing 3GPP and 3GPP2 networks. K is an encryption key value stored in the eUICC used for the AKA authentication algorithm, and in the present disclosure, OPc is a parameter value that can be stored in the eUICC used for the AKA authentication algorithm.

In the present disclosure, NAA is a network access application (Network Access Application) application program, and may be an application program such as USIM or ISIM stored in UICC to access a network. The NAA may be a network access module.

In the present disclosure, end user, user, subscriber, service subscriber, and user may be used interchangeably as a user of a corresponding terminal.

In the present disclosure, an eSIM port refers to a virtual interface that is divided and used by multiplexing a physical interface connected to the eUICC-modem, and eSIM port, eSIM port, eSIM port, port, SIM port, virtualization An interface (virtual interface), a logical interface (logical interface), and a logical SE interface (logical SE interface, LSI) may be used interchangeably.

The eSIM port used by the ISD-R can be expressed as an ISD-R eSIM port, and the eSIM port used by the profile can be classified and used as the profile eSIM Port.

In the present disclosure, information about a profile that can be returned to the LPA through GetProfileInfo() may be used as a term of profile metadata or profile information. The information is the profile information provided by SM-DP+ when installing the profile to the terminal, the status or setting information of the profile processed by receiving the ES10c command from the LPA, or processed when the eUICC satisfies a specific condition. It may be profile status/setting information.

In the present disclosure, a function for activating and managing a plurality of profiles existing in a single eUICC is collectively referred to as a Multiple Enabled Profile (MEP) function. In the conventional eUICC, only one profile can be activated, so a single eUICC cannot support a Dual SIM or Multi SIM function. In order to support dual SIM or multi-SIM functions with a single eUICC, it is necessary to enable and manage multiple profiles in a single eUICC. An eUICC in which the MEP function is implemented may be referred to as an MEP support eUICC. A terminal including a modem in which the MEP function is implemented and terminal software capable of supporting the modem may be referred to as an MEP support terminal.

In the present disclosure, a mode in which the terminal and the eUICC are divided and multiplexed so that one or more logical interfaces can be used in a single physical interface through an initialization process to be operated may be referred to as an MEP mode. It should be noted that even an MEP-supporting terminal or an MEP-supporting eUICC does not operate in the MEP mode if the operation in the MEP mode is not determined during the initialization process between the terminal and the eUICC.

In the present disclosure, the enabled state of the profile may mean a state in which all files and/or applications (eg, network access applications) in the profile are selectable as defined in GSMA SGP.21. In addition, the disabled (disabled) state of the profile may mean a state in which all files and/or applications (eg, network access applications) in the profile are not selectable as defined in GSMA SGP.21.

And, in describing the present disclosure, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description thereof will be omitted.

Hereinafter, embodiment(s) proposed in the present disclosure will be described with reference to the drawings.

First, a universal integrated circuit card (UICC) is a smart card inserted and used in a terminal, for example, a mobile communication terminal, and is also referred to as a UICC card. An access control module for accessing a network of a mobile communication service provider may be included in the UICC. Examples of such an access control module include a Universal Subscriber Identity Module (USIM), a Subscriber Identity Module (SIM), an Internet Protocol Multimedia Service Identification Module (ISIM), and the like.

A UICC including a USIM is usually called a USIM card. Similarly, a UICC including a SIM module is commonly referred to as a SIM card. It should be noted that in the following description, a SIM card may be used in a conventional sense including a UICC card, a USIM card, a UICC including an ISIM, and the like. That is, it goes without saying that the technical application of the SIM card can be equally applied to a USIM card, an ISIM card, or a general UICC card.

The SIM card stores personal information of a mobile communication subscriber, and performs subscriber authentication and traffic security key generation when accessing a mobile communication network, thereby enabling safe use of mobile communication.

The SIM card is generally manufactured as a dedicated card for a corresponding mobile communication operator at the request of a specific mobile communication operator when manufacturing the SIM card, and authentication information for network access of the corresponding operator, for example, a USIM application and IMSI, K value, OPc value, etc. are loaded on the card in advance and shipped. Accordingly, the manufactured SIM card is delivered to the subscriber by the corresponding mobile communication service provider and provided to the subscriber, and if necessary, installation, modification, deletion, etc. of the application in the UICC can be performed by utilizing technology such as OTA.

By inserting the UICC card into the mobile communication terminal owned by the subscriber, the network and application services of the corresponding mobile communication service provider can be used. By doing so, the authentication information, mobile communication phone number, personal phone book, etc. stored in the UICC card can be used as it is in the new mobile communication terminal.

However, the SIM card is inconvenient for a mobile communication terminal user to receive services from other mobile carriers. A user of a mobile communication terminal is inconvenient to physically obtain a SIM card in order to receive a service from a mobile communication operator. For example, when traveling to another country, it is inconvenient to obtain a local SIM card in order to receive a local mobile communication service. In the case of the roaming service, the above inconvenience is solved to some extent, but there is a problem in that the service cannot be received if there is an expensive fee and a contract between the telecommunication companies is not made.

On the other hand, when the SIM module is remotely downloaded and installed on the UICC card, this inconvenience can be largely solved. That is, a SIM module of a mobile communication service that a user wants to use at a desired time can be downloaded to the UICC card. Such a UICC card can also be used by downloading and installing a plurality of SIM modules, and selecting and using only one SIM module among them. Such a UICC card may or may not be fixed to the terminal. In particular, a UICC used by being fixed to a terminal is called an eUICC. In general, the eUICC means a UICC card that is used by being fixed to a terminal and can be selected by downloading a SIM module remotely. In the present disclosure, a UICC card that can remotely download and select a SIM module is collectively referred to as an eUICC. That is, among UICC cards that can be remotely downloaded and selected, UICC cards fixed to the terminal and UICC cards that are not fixed are collectively used as eUICCs. Also, the downloaded SIM module information is collectively used as the term "Profile".

Even if there is more than one profile in the eUICC, only one profile can be enabled at the same time. Therefore, even if the terminal supports two or more baseband(s) and two or more profiles exist in the corresponding eUICC, the terminal cannot support the dual SIM function that enables two profiles to be used simultaneously in one mobile phone. . As a way to solve this, it is possible to mount two eUICC(s) in the terminal, but this requires an additional eUICC module and a physical interface to connect the eUICC module to the baseband of the modem. and the cost of purchasing physical pins for the physical interface. In addition, securing the mounting space of the terminal according to the introduction of the module and the physical pin is also a problem.

Currently, since both the terminal and the eUICC process the initialization between the terminal and the eUICC on the assumption that only one profile can be simultaneously activated in the eUICC, the method of determining to support MEP in the initialization process between the terminal and the eUICC and the terminal or The action to be processed in eUICC is not defined. In particular, when a removable eUICC supporting MEP is inserted into a terminal, an operation to be processed by the eUICC is not defined. Therefore, the present disclosure intends to solve this problem. In addition, when the user in the eSIM terminal wants to change the connection from the baseband occupied by one PPR1 profile active in the eUICC to another baseband and use it, there is no consideration of a method of changing the connection of the corresponding profile. We want to solve the problem.

In the existing wireless communication system, it is assumed that both the terminal and the eUICC can simultaneously activate only one profile in the eUICC, and a method of handling initialization between the terminal and the eUICC is being considered. Therefore, in the initialization process between the terminal and the eUICC, a method for determining to support MEP and an operation to be processed by the terminal or the eUICC according to the determination are not defined. Accordingly, various embodiments of the present disclosure propose a profile handling method during initialization between a UE and an eUICC in a wireless communication system depending on whether the MEP mode is operated or not.

In addition, in various embodiments of the present disclosure, in a wireless communication system supporting MEP, the eUICC sets the default profile e in consideration of the PPR1 profile between the terminal and the eUICC, and also uses the set default profile information to efficiently configure the profile in the terminal or eUICC Suggest ways to manage

Hereinafter, embodiment(s) proposed by the present disclosure will be described with reference to the drawings.

1 is a diagram illustrating components of a wireless communication system according to an embodiment of the present disclosure.

The terminal 1005 may include a general app 110 , an LPA 115 , a terminal framework 120 , and an MEP support modem 125 . Here, the general app 110 is an app that is pre-loaded or downloaded and installed in the terminal, such as a carrier app or a SIM card manager app. ) indicates an app that has access to the profile. On the other hand, the LPA 115 is an app in charge of controlling the eUICC, and it handles profile management while communicating with the SM-DP+ 170 and the terminal user 101 and the ISD-R 165 in the eUICC 150. . The LPA 115 may be implemented alone or integrated into other general terminal applications, and the LPA 115 configures a UI to obtain a user's input for local management of a profile or SM-DP+ 170 remote After receiving the management command from the SM-DP + server 170, configuring the UI for the command to obtain the user 101 input, from the LPA 115 to the ISD-R 165 of the eUICC 150 Profile activation/deactivation/deletion/update can be handled by passing the profile management command. Remote Profile Management (RPM) refers to a series of procedures in which profile installation/activation/deactivation/deletion and other functions are performed by commands transmitted from the SM-DP+ 170 to the terminal. The RPM may be requested by a communication operator, a service provider, or the owner of the terminal and a command may be generated by the SM-DP+ 170 .

The communication modem 125 of the terminal 105 is a device that modulates and transmits a signal for information transfer, and demodulates the receiving side to restore the original signal. ) (hereinafter referred to as baseband) may be mounted on two or more. Baseband can be logically implemented within the modem. The modem 125 is connected to the UICC or eUICC by one physical pin (smart card interface that conforms to ISO7816 standard). When sending to 150, the eUICC 150 responds to the result value in response. A SIM Card (pSIM) occupies 1 baseband of the modem through 1 physical pin, and 1 pSIM has 1 SIM port. A SIM port may be used in combination with a SIM card slot, and is defined as "physical and electronic housing provided on a device to accommodate a physical SIM card" in GSMA TS (Technical Specification).37. The MEP support eUICC 150 is connected to the MEP support modem 125 by one physical pin, and the profile in the eUICC occupies one baseband in the MEP support modem 125 . Each profile communicates with the baseband mapped to the eSIM port through one eSIM port. For example, in FIG. 1 , profile 1 155 occupies baseband 1 using eSIM port 1 in an active state, and profile 2 160 occupies baseband 2 using eSIM port 2 in an active state. so it can be used In this case, although the pSIM 145 in FIG. 1 is inserted, there is no baseband connection. On the other hand, the ISD-R 165 is an entity in the eUICC that can be selected only in the LPA 115 or the modem 125, and stores the metadata of the profile or the status and setting information of the profile in the eUICC or collects it through the eUICC internal operation. When receiving a command from the LPA 115 or the terminal 105, it can reply. As an example, it may include a case where a command such as GetProfileInfo() is received as an ISD-R selection command APDU or an APDU message. Meanwhile, the LPA 115 is software that operates on the terminal framework 120 , and functions of the LPA 115 may be partially integrated into the terminal framework 120 . The message transmitted from the LPA 115 to the eUICC 150 is finally transmitted 120 to the eUICC 150 via the terminal framework 120 and the modem 125, and the eUICC 150 receiving the message is The profile management operation of the eUICC is performed by checking the ES10c command in the APDU transmitted from the LPA 115 .

In FIG. 1 , it is assumed that two profiles, profile 1 and profile 2, exist in the eUICC 150 for convenience of explanation below, but the present invention is not limited thereto. It should be noted that a profile may exist and more than one profile may exist in an active state. Profile 1 (155) and profile 2 (160) can be simultaneously activated in the MEP-supported eUICC, and in the case of the non-MEP eUICC, only one profile among the profile 1 ( 155 ) and the profile 2 ( 160 ) can be activated. The ISD-R 165 creates a new ISD-P (meaning a Security Domain for hosting the profile) and as described above, the necessary eUICC data and services required by the LPA function (eg, the local profile management, profile information, etc.) are stored or collected in eUICC and provided to LPA.

Meanwhile, in FIG. 1 , the eUICC 150 of the terminal 105 is not shown for convenience of explanation, but the certificates required by the security domains of the eUICC (Credentials), for example, a certificate for verifying the SM-DP+ certificate It may include an Embedded UICC Controlling Authority Security Domain (ECASD), an eSIM operating platform, etc., which is a space for storing an issuer's certificate issuer's root public key, a keyset of an eUICC manufacturer, and the like.

The terminal framework 120 refers to the operating system of the terminal and exists between the modem and other terminal systems and the general app and LPA. The terminal framework 120 may obtain information on the eUICC from the modem 125 and have it, and when a general app or LPA requests information on the terminal or eUICC, the information may be returned. In addition, the terminal framework 120 generates a Command APDU according to the channel open or port open command received from the general app or LPA and transmits it to the modem, receives a response message for the corresponding APDU from the modem, and delivers it back to the general app or LPA can In addition, the terminal framework 120 may receive the channel.transmit (Command APDU) called from the general app or LPA and deliver it in the channel.transmit (Response APDU) format from the general app or the LPA.

The SM-DP+ server 170 includes a function of creating a profile, encrypting a generated profile, generating a profile remote management command, or encrypting a generated profile remote management command, as described above, or a plurality of terminals It means a server that includes a profile activation support function.

2 is a diagram schematically illustrating an example of a connection between an existing v2 eUICC that does not support MEP and a modem in a wireless communication system.

In the existing v2 eUICC, only a single (one) profile can be activated in the eUICC, and only the user's local profile management is possible without SM-DP+'s intervention in order to process activation/deactivation/deletion/update of pre-installed profiles. . In the case of the modem 201 not supporting MEP, considering the case where a physical SIM card is used simultaneously with the eUICC, it may have one or more basebands, but in the present disclosure, in order not to obscure the issue, one baseband is assumed Explain. In the initialization process between the terminal and the eUICC, the modem 201 can check the maximum number of open channels through ATR (Answer to Reset) information received through the eUICC, and creates a maximum of 20 (0 to 19) existing channels. can do. In the initialization process between the modem and the eUICC, the modem can select the ISD-R in the eUICC and create a channel for APDU transmission through the MANAGE CHANNNEL Open Command, and then receive a request for channel open from the terminal framework at a specific time. In this case, the modem may transmit the APDU by additionally opening each independent channel for processing the profile between the application and the eUICC or the APDU transmission between the LPA and the ISD-R. Existingly, only one physical interface is used between the modem and the card, so the modem uses an independent channel to handle APDU transmission as an end between a specific applet in the profile between the application and eUICC within the interface, or between LPA and ISD-R. is assigned to transmit and process the APDU.

In the eUICC up to v2 eUICC 215 , only one profile can be simultaneously activated. One activated profile such as Case 1 (2100) or Case 2 (2200) occupies one baseband 205 of the modem 201, and REFRESH to the modem 201 in the activated profile of the eUICC 215 When transmission of the Proactive Command is required, the modem 201 may transmit the APDU through a channel previously allocated to the App ID of the corresponding profile. For example, in case 1 (2100), the USIM application of profile 1 (220) may transmit an APDU through any channel #0 (240) allocated by the modem between baseband 1 (205).

On the other hand, when the ISD-R 230 receives the ES10c.EnableProfile (profile 2) request for the state change of the profile from the LPA, for example, the state change from Case 1 (2100) to Case 2 (2200) or eUICC When a memory reset (Reset) is requested, the ISD-R 230 resets the UICC and / or A Proactive Command including a profile state change (eUICC Profile State Change) may be transmitted (235). In this case, the ISD-R 230 transmits a response APDU indicating that there is a Proactive Command as a return value to the APDU transmitted by the modem 201 to the ISD-R 230, and the modem 201 receives it and receives the basic channel By issuing a FETCH APDU command, a Proactive Command for the UICC reset or eUICC Profile State Change may be returned as the body of the response APDU of the corresponding message. When the state change from Case 1 (2100) to Case 2 (2200) is completed, the USIM application of Profile 2 (225) in Case 2 (2200) transfers a random channel 245 allocated by the modem between baseband 1 (205). APDU can be transmitted through

3 is a diagram schematically illustrating examples of a connection between an eUICC and a modem according to the introduction of a virtual interface concept in a wireless communication system according to an embodiment of the present disclosure.

For convenience of explanation, in FIG. 3 , the eUICC 320 assumes an eUICC supporting the MEP function capable of simultaneously activating a plurality of profiles. Meanwhile, it is assumed that the modem 301 also supports the MEP function. In FIG. 3, a situation in which there are two basebands (baseband 1 305 and baseband 2 310) and two activated profiles (profile 1 325 and profile 2 330) is described as an example, and the modem The mapping between the baseband and the eSIM port in 301 may be switchable, but in Case 1 3100 to Case 3 3300 of FIG. 3 , in order not to obscure the topic, logical terminal endpoint within the modem 301 . ) will be described by limiting the mapping between baseband 1 305 and channel 1 340 and between baseband 2 310 and channel 2 345 .

The eUICC 320 supporting MEP may activate a plurality of profiles, and each activated profile may occupy and use a specific baseband of the modem. In MEP, since two or more profiles can be simultaneously activated, a logical interface concept for multiplexing the existing physical interface 315 and dividing it for each activated profile to transmit an APDU can be introduced. Hereinafter, for convenience of description, a corresponding logical interface is referred to as an eSIM port, and is divided into eSIM port #1 (340), eSIM port #2 (345), and eSIM port #0 (360).

As a result of the initialization between the terminal and the card, a port and an intra-port transmission channel for APDU transmission between the modem and the eUICC can be created. In this case, the eSIM port ID mapped to each baseband can be set. The corresponding port ID can be set in the modem or terminal platform and delivered to the LPA. The port ID is used interchangeably as a port number for convenience of description in the present disclosure. The modem may have as many eSIM ports as the number of basebands, but the number of eSIM ports utilized by the eUICC 320 may be equal to or smaller than the number of profiles that can be simultaneously activated in the corresponding eUICC. The profile can use one of its eSIM ports to receive APDU messages and send proactive commands to the modem.

In the examples of Cases 1 to 3 of FIG. 3 , the modem 301 may transmit the APDU Command to the activated profile 1 325 through the eSIM port #1 340 . Profile e 1 (325) may transmit a Proactive Command to baseband 1 (305) through eSIM port #1 (340). The modem 301 may transmit the APDU Command to the activated profile 2 (330) through the eSIM port t #2 (345). Profile 2 (330) may transmit a Proactive Command to baseband 2 (310) through eSIM port #2 (345).

Meanwhile, as in Case 1 (3100), Case 2 (3200), or Case 3 (3300), which will be described below, the terminal modem may set the channel for transmitting the APDU to the ISD-R by one of the following methods.

- Case1 (3100): Opens a transmission channel so that the ISD-R (335) can be selected only through one of the eSIM ports. The eSIM port used by the ISD-R 335 shares a profile and port, but uses a single independent channel within the port. In this case, for example, the LPA transmits and receives the ISD-R 335 and the APDU only through the channel 350 allocated to the ISD-R 335 in the port #1 340 .

- Case2 (3200): Opens the transmission channel for each port so that the ISD-R (335) is selected through all eSIM ports occupied by the profile. The eSIM port used by the ISD-R 335 shares the port with the profile occupying the port, but uses a single independent channel within the port. In this case, for example, the LPA is channel 355-1 assigned to ISD-R 335 in port #1 340 or channel 355 assigned to ISD-R 335 in port #2 345. -2) is selected to transmit and receive the ISD-R 335 and the APDU simultaneously or asynchronously.

- Case 3 (3300): Opens the dedicated port and the transmission channel in the corresponding port so that the ISD-R (335) is selected through the ISD-R dedicated port. The dedicated port exists independently of the eSIM port used by the profile and uses a single channel within the corresponding port. In this case, for example, the LPA transmits and receives the ISD-R 335 and the APDU using the allocated channel 350 in the independent ISD-R dedicated port 360 .

4 is a diagram illustrating a method for a terminal and an eUICC to process local profile activation when operating in an MEP mode according to an embodiment of the present disclosure.

As described above, the v2 eUICC that does not support the MEP function is designed to enable activation of only one profile. If there is an previously activated profile, the previously activated profile must be changed to an inactive state in order to activate another profile. However, in the case of an eUICC supporting the MEP function, when processing a profile activation command, depending on the location of the eSIM port to activate the profile, other currently activated profiles may not be deactivated. For example, if eSIM has eSIM port 1 and eSIM port 2, and profile 2 is currently activated on eSIM port 2, when additionally activate profile 1 on eSIM port 1, profile 2 that is currently activated on eSIM port 2 is performed. In addition, if the terminal has a baseband that supports different RATs, the eSIM port is matched and the radio access technology (RAT) that can be provided through the corresponding profile according to the baseband ) is different, so it is necessary to provide information so that the user or the server (at RPM) can decide which eSIM port to match the profile to be activated to. For example, if eSIM port 1 is matched with a baseband supporting a 4G network and eSIM port 2 is matched with a baseband supporting a 5G network, if a user or a server performing remote management knows the information It can help you select the appropriate eSIM port to activate a specific profile on.

The number of profiles simultaneously activated in the eUICC at a specific time may be limited to be equal to or smaller than the number of eSIM ports allocated by the eUICC. When the user or SM-DP+ wants to process the activation of a profile, the eUICC sends the maximum number of profiles that can be activated to the eUICC to the LPA or SM-DP+ server in consideration of the number of currently activated profiles and the number of eSIM ports. can reply

The LPA or the terminal software may utilize information transmitted from the eUICC (eg, the number of eSIM ports allocated by the eUICC) as predetermined information for notifying the user that the currently activated profile needs to be deactivated. 4 illustrates a procedure for activating a profile as an example of a method for a user 401 to manage a profile through the LPA 405 in the MEP support terminal. A case in which all of the eUICC 410, the modem 415, and the LPA 405 in FIG. 4 support MEP will be described as an example.

The user (End User) 401 performs an activation command for the profile installed in the terminal through the information displayed on the LPA 405 or the application in which the LPA 405 is integrated (step 420). The LPA 405 of the terminal or a corresponding implementation application may indicate to the user 401 a list of profiles installed in the eUICC 410 and current status information of the corresponding profile. In addition, it is possible to additionally indicate from the terminal the wireless access technology that can be provided for each baseband of the terminal modem, the eSIM port information matched for APDU transmission with the corresponding baseband, and the occupancy status information of the profile of the corresponding port from the eUICC. In this case, the LPA 405 may check the Profile Policy Rules of the profile and additionally display a warning message such as profile activation impossible to the user 401 . When the user 401 selects a specific profile (named profile 3) and decides to activate it through the information displayed on the screen, the LPA 405 activates the profile in the eUICC 410 including the port number matched to the selected baseband. ES10c.EnableProfile (ISD-P AID (Issuer Security Domain - Profile Application ID) or ICCID (Profile ID), refreshFlag, Port number) command for refreshFlag is additionally set and transmitted when a REFRESH Proactive Command is required. It is also possible for the LPA to transmit the aforementioned ES10c.EnableProfile command without setting refreshFlag. However, in this case, before the LPA transmits the ES10c.EnableProfile command, the terminal terminates the application session for the port occupied between the UICC and the modem if there is an activated profile in the corresponding port, and opens it to select the application If there is a logical channel close, a Proactive Command session between the modem and the eUICC, the close process must be satisfied (step 425).

Upon receiving the corresponding activation profile command from the LPA 405 in step 430, the eUICC 410 performs a deactivation procedure for the profile occupying the corresponding port (referred to as profile 1 for explanation), and ES10c. A profile (referred to as profile 3 for explanation) having an ICCID (profile ID) included in EnableProfile and transmitted may be activated. The ISD-R of the eUICC 410 determines whether the corresponding profile 3 can be activated comprehensively by checking the activation status and Profile Policy Rules (PPR) of the profile 3 to be activated and the existing profiles installed in the eUICC 410 . and (step 435), if activation is impossible, an error message may be returned to the user. In determining whether the corresponding profile 3 can be activated in the eUICC 410 supporting MEP, the port occupied by the existing profile (referred to as profile 1) in the eUICC 410 for the activation of profile 3 is to be used. , it can be determined that the eUICC changes the profile status to inactive by limiting to profile 1 that used the corresponding port and changes profile 3 to active status. When profile 3 occupies an empty port, the MEP support eUICC 410 may proceed without performing a deactivation procedure for other profiles in the eUICC.

If the refreshFlag is set in step 430 (step 440), the eUICC 410 may transmit a REFRESH Proactive Command to the modem 415 to request profile state change processing or UICC reset processing (step 445). The modem 415 transmits a Terminal Response (when the eUICC transmits an eUICC Profile State Change) to the eUICC 410 according to the result of processing the REFRESH in the modem 415 or (when the eUICC transmits a UICC Reset) ) may not transmit a Terminal Response (step 450). After eUICC sends eUICC Profile State Change and receives Terminal Response, or after eUICC sends UICC Reset, the selected profile 3 is matched with the port number transmitted in step 430 to match the profile activated in the corresponding port (e.g., For example, if there is profile 1), the corresponding profile is deactivated and profile 3 is activated, or if the corresponding port is an unoccupied port, only the corresponding profile 3 is activated and completed (step 455).

If refreshFlag is not set in step 430 (step 460), the eUICC 410 matches the profile 3 selected after step 435 with the port number transmitted in step 430 to the profile activated in the corresponding port (eg, For example, if there is profile 1), the corresponding profile is deactivated and profile 3 is activated, or if the corresponding port is an unoccupied port, only profile 3 is activated (step 465). When the eUICC 410 returns a result of performing the corresponding procedure to the LPA 405 (step 470), the LPA 405 in the terminal and the modem 415 and the cache value deletion according to the profile state change, such as a command corresponding to REFRESH and performs the UICC activation procedure including TERMINAL PROFILE procedure defined in ETSI TS 102 221 clause 14.5.1 in the modem 415 (step 475). After performing the above procedure, the modem 415 performs a network attach procedure in the baseband connected to the corresponding port by using the profile information newly connected to the port (step 480).

Meanwhile, although not shown in FIG. 4, when the ISD-R receives port information mapped to the profile from the LPA, the ISD-R stores the mapping information of the corresponding profile and the port, and then getProfileInfo() from the LPA to the ISD-R or when LPA requests information for remote profile management from SM-DP+, the profile and the port information mapped with the profile can be included and provided together. In addition, as described later in detail in FIG. 6 , the eUICC operating in the MEP mode determines whether to set the default profile of the corresponding profile, updates the default profile setting information with the profile information, and obtains getProfileInfo() in the LPA. When receiving, the default profile setting information can be included and provided together. That is, the ISD-R may provide one or more of the status information of the installed profile, the mapping information of the corresponding profile and the port, the ICCID of the profile set as the default profile, or the port number used by the corresponding profile.

5 is a diagram schematically illustrating a connection between a modem and an eUICC for maintaining an existing setting when a MEP-supporting terminal is rebooted in a wireless communication system according to an embodiment of the present disclosure.

In the case of rebooting by resetting the terminal and the eUICC, such as turning the terminal's power off and on or inserting a removable eUICC into the terminal, the MEP-supported modem 501 and the MEP-supported eUICC 505 are connected before rebooting. It can be processed to maintain the association between the baseband of the eSIM port, and the profile. The eUICC 505 sends the ES10c. When the EnableProfile (profile ID or application ID, port number to activate) command is received, the mapping information between the profile and the eSIM port can be saved as profile information in the profile's metadata or memory in the eUICC while activating the profile. As described above, when there is an eSIM port with a profile activated in the process of initializing with the terminal, the eUICC 505 returns the number(s) of the profile-activated eSIM port to ATR, a response message of Terminal Capability, The ISDRProprietaryApplicationTemplate or the eUICC 505 may reply to the modem 501 through one of a response message to the configuration information request transmitted from the terminal through the port. On the other hand, the modem 501 stores the mapping information between the baseband and the eSIM port set before turning the power off and on again (Power Cycle), and when receiving information on the eSIM port number(s) for which the profile is activated from the eUICC, , the mapping process can be performed with the same eSIM port number by resetting the connection to the eSIM port number provided by the eUICC. 5 shows an example of implementing this.

In FIG. 5, in the MEP support modem 505, baseband 1 (4G support) 510 is connected to eSIM port #1 (520), and baseband 2 (5G supported) 515 is connected to eSIM port #2 (525). It is assumed that profile 1 530 is activated in eSIM port #2 525 and profile 2 535 is activated in eSIM port #1 520 in the MEP support eUICC 505 . When the terminal and the card are initialized by rebooting, the eUICC 505 sets #1 and #2 as the number of the eSIM port for which the profile is activated and #1 as the port number for which the default profile is activated during the initialization process with the terminal. ATR, a terminal capability response message, ISDRProprietaryApplicationTemplate, or the eUICC 505 may reply to the modem 501 through one of a response message to a configuration information request transmitted through a port from the terminal. When the modem 501 determines the MEP operation by receiving the corresponding port number information, the modem 501 generates at least two eSIM ports for profile connection based on the previously stored eSIM port and baseband mapping information. Recognizing that it is necessary, the eSIM port #1 520 may be mapped to the baseband 2 (5G) 515 and the eSIM port #2 525 may be mapped to the baseband 1 (4G) 510 . On the other hand, the eUICC 505 has the eSIM port number and profile-to-profile mapping information stored as profile information, and activates profile 2 (535) in eSIM port #1 (520), profile 1 (in eSIM port # 2 (525)) 530) may handle the connection for activation. On the other hand, when the eSIM port number (#1, #2) cached before the modem 501 reboots is different from the eSIM port number(s) received from the eUICC 505, or ATR, response of terminal capability When the ID (EID) for the eUICC 505 received as one of the message, ISDRProprietaryApplicationTemplate, or a response message to the configuration information request transmitted from the terminal by the eUICC 505 through the port is different from the previously cached EID, the modem 501 ) determines that a new removable eUICC has been inserted, deletes the previously cached eSIM port number(s) while creating the eSIM port(s), allocates a new port number(s), and may provide it to the eUICC 505 .

6 is a diagram illustrating a method of setting a default profile by an MEP support eUICC inserted or fixed in a terminal according to an embodiment of the present disclosure.

When the eUICC 610 performs the default profile setting through the profile activation command, the eUICC 610 communicating with the eSIM support terminal may be a removable eUICC that supports MEP or an eUICC fixed to the terminal. The user (End-User) 601 may select a profile to be activated in the LPA 605 (step 620). When the user 601 selects a profile to be activated in the LPA 605, the LPA 605 may transmit a profile activation command to the eUICC 610 (step 625). In this case, the LPA 605 operating in the MEP mode may transmit the ICCID of the profile to be activated and the eSIM port number as identification information indicating which eSIM port to additionally activate. As an example, the command may include an ES10c.EnableProfile (ICCID of the profile to be activated, refreshFlag, Port#) message. Upon receiving the corresponding profile activation command, the eUICC 610 may check whether the corresponding profile is already activated, and verify information on a Profile Policy Rule for the corresponding profile (step 630). If it is determined that the corresponding profile can be activated through the corresponding verification, the eUICC 610 processes the profile activation and selectively transmits information about the profile status change to the modem 615, for example, through a REFRESH Proactive Command message. Profile activation can be completed by causing the modem 615 to perform a necessary operation such as reset (step 635). When the activated profile becomes one as a result of activating the corresponding profile, the eUICC 610 may set and store the corresponding profile as a default profile (step 640). As a result of activating the corresponding profile, if there is more than one activated profile and the profile to be processed for activation in step 630 is a profile with PPR 1 set, the eUICC 610 performs the activation regardless of whether a previous default profile is set. A profile in which one PPR1 is set can be changed to a default profile. When a removable MEP-supported eUICC is inserted into the non-MEP-supported eSIM terminal and a profile activation command is received from the LPA, the eUICC is determined in step 640 regardless of whether the activation command includes the eSIM port number and is received You can set and save the default profile through the process.

In another embodiment (steps 645 to 680) for setting a default profile, by providing a screen for setting a default profile to the user 601 in the LPA 605, the user 601 can set the default profile through the UI ( step 645).

In this case, the LPA 605 , the eUICC 610 , and the modem 615 are all modules supporting MEP, and may operate in the MEP mode in the initialization process between the terminal and the card. Also, the eUICC 610 may be a removable eUICC or an eUICC that is fixed to the terminal. When there is one activated profile in the terminal or when a profile in which PPR 1 is already set is activated, the LPA 605 may not selectively display a UI for setting a default profile.

In step 645, when the user 601 selects one of the profiles and inputs the setting as the default profile through the screen for setting the default profile of the terminal, the LPA 605 of the terminal defaults the profile selected as the eUICC 610 A command to set as a profile may be transmitted (step 650). For example, the command is ES10c. It can contain messages such as SetDefaultProfile (ICCID of the selected profile). When the eUICC 610 receives SetDefaultProfile (ICCID of the selected profile) from the LPA 605, the eUICC 610 verifies whether a profile corresponding to the selected ICCID is activated, and PPR1 among the profiles of the existing eUICC 610. It is verified whether there is a profile with ? (step 655). According to the verification result, the eUICC 610 transmits an error message to the LPA 605 (step 660) or processes the default profile setting (step 670) and successfully returns a response to the setting to the LPA 605. Yes (step 675).

The error message is transmitted when the ICCID of the profile set in SetDefaultProfile (ICCID of the selected profile) as a result of verification in the eUICC 610 is the ICCID of the deactivated profile, or when the default setting for the PPR 1 profile needs to be changed through the request. can In this case, the error message returned by the eUICC 610 may be, for example, one of error messages such as profileNotInEnabledState and changeNotAllowedbyPPR1.

On the other hand, when the terminal decides to operate in the non-MEP mode during the initialization process between the terminal and the card, such as rebooting between the terminal and the card, the MEP support LPA 605 also disables or does not display the user selection menu for the default profile setting. It is possible. However, there may be a possibility that the user selection menu is exposed and the SetDefaultProfile (ICCID of the selected profile) is transmitted to the eUICC 610 according to the user's selection. When the eUICC 610 receives the corresponding message, when it is decided to operate as a general eUICC in the initialization process between the terminal and the card, such as rebooting between the terminal and the card, the eUICC 610 is the same as the non-supported general eUICC, even if it is an MEP-supported eUICC. , an error message may be returned to the LPA 605 as processing for the default profile setting is impossible.

Upon receiving the corresponding error or success response message, the LPA 605 may selectively provide a message about the default profile setting result to the user UI to guide the processing result to the user. That is, when the LPA 605 receives the error message, the LPA 605 may inform the user of an error regarding the default profile setting and end the procedure (step 665 ). Also, when the LPA 605 receives the success response message, the LPA 605 may inform the user that the default profile setting has been completed and end the procedure (step 680).

Meanwhile, the method for the eUICC 610 to set the default profile in steps 620 to 640 of FIG. 6 can be similarly applied even when the previously set default profile is deactivated. For example, when the user selects a profile to be deactivated and requests ES10c.DisabledProfile(ICCID,refreshFlag,[Port#]) for profile deactivation from the LPA 605 to the eUICC 610, the eUICC 610 returns the profile It verifies that this is in the active state and that it is not a PPR1 profile, and if possible, the deactivation of the profile corresponding to the ICCID as defined in SGP.22 can be handled. Then, similarly to step 640, when the eUICC 610 determines that there is one activated profile in the eUICC 610 as a result of the deactivation of the default profile, the eUICC 610 defaults to one activated profile. It can be set to change with the profile. If the eUICC 610 determines that there are two or more remaining activated profiles in the eUICC 610 due to the deactivation of the default profile, the eUICC 610 performs a specific port (eg, low port number) based on the stored settings. It may be processed by setting the profile set to the default profile or by requesting resetting the default profile through other steps (steps 645 to 680) while returning the profile deactivation process result to the LPA 605 .

7 is a diagram illustrating a process of processing a default profile setting in an LPA of a terminal according to an embodiment of the present disclosure.

Referring to FIG. 6 described above, the LPA may or may not operate in the MEP mode, and the eUICC supporting MEP may or may not operate in the MEP mode. In FIG. 7 , a case in which the LPA operates in the MEP mode will be described as an example.

Referring to FIG. 7 , in the LPA operating in the MEP mode, the user may receive a default profile setting input by providing a menu for the default profile setting to the user (step 705). If the terminal does not decide to operate in MEP mode during the initialization process between the terminal and the card, the LPA operates as an LPA that does not support MEP so that the menu for selecting a default profile is not displayed on the screen or deactivated so that the user cannot select it. It is possible. In addition, even when operating in MEP mode, LPA checks the number of profiles activated in eUICC with the information obtained by sending GetProfileInfo() or ISD-RProprietaryTemplate command from eUICC, and when there is one activated profile in eUICC, the user The menu may not be exposed or the selection may be disabled so that it cannot be selected.

When the user clicks on a profile to select as the default profile or selects one of the specific ports in which the profile is activated and selects it as the default, LPA detects an event for the default profile setting and detects the selected profile or the corresponding default profile. The ES10c.SetDefaultProfile (ICCID) command may be transmitted to the eUICC including the ICCIC of the profile activated in the selected port (step 710).

The LPA may receive a processing response result to the corresponding command from the eUICC (step 715). The corresponding received response may be one of error messages such as profileNotInEnabledState and changeNotAllowedbyPPR1, or a message for normal response processing. As described above in FIG. 6 , a case in which an MEP support eUICC that does not operate in the MEP mode is inserted is possible. In this case, the LPA may receive an error message including the inability to process the corresponding message as a reply.

The LPA that has received the message may selectively guide the processing result to the user according to the returned code value and message (step 720). When receiving a profileNotInEnabledState or changeNotAllowedbyPPR1 or other error message, the LPA may display a notification message for not being able to set a default profile to the user and terminate. When a success response message is received, the LPA can display the UI as indicating that the default profile setting has been completed and exit. As an example, the success response message may be a response message such as status code=ok, error reason=setDefaultProfileResult.

8 is a diagram illustrating a method for an eUICC to determine profile processing using default profile information in an initialization process between a terminal and an MEP eUICC according to an embodiment of the present disclosure.

The MEP-supported removable eUICC may be an eUICC that is inserted into another terminal before being inserted into the terminal in FIG. 8 and has performed the procedure described above in FIG. 6 .

When the MEP supporting eUICC is inserted into the terminal, the eUICC may determine whether the corresponding terminal is a terminal supporting the eUICC function through predetermined information received from the terminal (step 805). Whether the corresponding terminal supports the eUICC function, as described above in FIG. 5, in the initialization process between the terminal and the MEP eUICC, the eUICC receives a TERMINAL CAPABILITY Command message from the terminal, and the eUICC-related capabilities in the TERMINAL CAPABILITY Command message received from the terminal When the '83' tag is not included as an identifier indicating (eUICC-related capabilities), the eUICC may determine the corresponding terminal as a terminal that does not support the eUICC function. If the eUICC determines that the corresponding terminal is a terminal that does not support the eUICC function, it checks whether there is an activated profile (step 815).

On the other hand, when the '83' tag is included in the Terminal Capability Command message received from the terminal, the eUICC may determine that the corresponding terminal is a terminal supporting the eUICC function (step 805). However, when a command for channel open is received without an identifier indicating that the eUICC enters the MEP mode in the Command APDU received from the terminal afterward (step 810), the eUICC determines that the terminal is a non-MEP terminal and is activated It is checked whether there is a profile (step 815).

The modem may transmit the Command APDU header including identification information indicating the operation decision in the MEP mode. This is an identifier indicating that the MEP mode has been entered. In the case of receiving an Instruction Code (INS) indicating that the MANAGE PORT is designated as Class (CLA) in the header of the Command APDU and indicating that initialization of the MANAGE PORT is requested, or When the header of the Command APDU indicates MANAGE CHANNEL as CLA and a code indicating connect to a logical interface as INS is included and received (step 810), the eUICC may determine to enter the MEP mode (840). step).

When the corresponding identifier is not received, the eUICC may determine whether there is an activated profile (step 815) and process the operation as follows.

If there is no active profile as a result of the determination, it operates as a general eUICC that does not support MEP defined in SGP.22 and processes subsequent operations (step 835).

If there is an activated profile, it is determined whether there is one activated profile (step 820).

As a result of the determination, if there is only one activated profile, the eUICC maintains the status of the corresponding profile in the activated state (step 825) and operates as a general eUICC that does not support MEP defined in SGP.22 to process subsequent operations (step 835).

As a result of the determination, if there are two or more activated profiles, the eUICC checks information on the profile set as the stored default profile, and changes the status of the profiles except for the default profile to the inactive status (step 830). The eUICC can process the change to the inactive state without receiving an explicit command for the inactive profile received from the LPA, and can process the reset command without sending a refresh command to the modem in the process of processing the inactive state change. The eUICC that has changed the status of the profiles except for the default profile to inactive status operates as a general eUICC that does not support MEP defined in SGP.22 and processes subsequent operations (step 835).

When the '83' tag is included in the Terminal Capability Command message received from the terminal and an identifier indicating entry into the MEP mode is included in the Command APDU received from the terminal, the eUICC may determine operation in the MEP mode (step 810). ). A method in which the eUICC enters the MEP mode and handles the profile with reference to the default profile information (step 840) will be described in detail later with reference to FIG. 10 .

9 is a diagram illustrating a method of processing profile handling by referring to default profile information in an eUICC when operating as a general eUICC in FIG. 8 according to an embodiment of the present disclosure.

9 schematically illustrates an example of an initialization process between a terminal and an eUICC in a wireless communication system, and describes a procedure for handling a profile by referring to default profile information in the eUICC and operating as a general eUICC.

Referring to FIG. 9 , the modem 905 can check whether the card is inserted through receiving a response to the periodic STATUS command or an electrical signal according to the card insertion, and recognizes that the card is inserted when the eUICC 910 is inserted into the terminal. can do. In FIG. 9 , the MEP-supported removable eUICC 910 may be an eUICC that has been inserted into another terminal before being inserted into the terminal and has performed the procedure described above in FIG. 6 . In order to use the card, the terminal performs Activation and Cold Reset to set the operating environment for operation with the eUICC card, such as power supply, clock synchronization, current, and voltage (step 915) ). When the setting of the operating environment for using the corresponding eUICC is completed, the eUICC 910 returns an Answer to Reset (ATR) message to the modem 905 (step 920). The ATR message is the first message the card transmits to the terminal, and message blocks consisting of up to 32 bytes are transmitted in a continuous chain.

The eUICC 910 may reply to the terminal including whether it supports the eUICC functionality defined in GSMA SGP.22 as one of the message blocks defined as an interface byte in the message blocks of the ATR message (step 920) . Meanwhile, in the corresponding ATR message, the eUICC 910 may reply by including information indicating a supported transport protocol and whether the corresponding transport protocol can be changed. The modem 905 may determine to use the transmission protocol supported by the card as it is according to information included in the received ATR message. Alternatively, when the modem 905 has an identifier for transmission protocol changeability in the ATR message, by additionally transmitting a request for transmission protocol and parameter determination to the eUICC 910, the modem 905 and the eUICC 910 can be used between the By negotiating a transmission protocol (step 925), a transmission protocol to be used by the modem 905 may be finally determined (step 930).

After receiving the ATR, the modem 905 may implicitly select the MF (Master File) of the eUICC 910 (step 923). The MEP support eUICC 910 can process to show only EF (Elementary Files) of MF level as a default file system when there is no activated profile, and additionally when there is one or more activated profiles in the eUICC 910 By processing only the default file system and the file systems for one default profile to be displayed, the terminal can selectively process the default profile at the time. Alternatively, if there is one or more activated profiles in the eUICC 910, even if there is a default profile, file systems for all activated profiles are not displayed at that point in time, and the eUICC 910 supports eUICC when receiving Terminal Capability. When received without an identifier or without an identifier for eUICC support and MEP support (step 935) or when received without initialization information as MEP (step 950), only the file system of the default profile is displayed in addition to the default file system. may be As will be described later, when there are other activated profiles while leaving only the default profile in operation 935 or 950, the eUICC may deactivate the corresponding profiles. In step 935 or step 950 , the eUICC additionally showing only the file system of the default profile may be before or after deactivation of other activated profiles if there are other activated profiles.

In step 930, the terminal and the card may transmit an Application Protocol Data Unit (APDU) message using either T=0 or T=1, which is a transport protocol defined in ISO 7816-3. APDU is a data unit composed of a pair of commands and responses, and is used in an application for message processing between other applications. The modem 905 is SGP. 22, the capability of the eUICC-related terminal may be included in the terminal capability and transmitted to the eUICC 910 (step 935). As described above, whether the terminal has the eUICC-related capability can be determined by the '83' tag defined in the Terminal Capability template (tag 'A9'). The terminal determines whether the terminal supports MEP in the corresponding '83' tag or whether there is a newly defined tag (not the '83' tag) for MEP in the Terminal Capability template (tag 'A9'). Can you tell me if it is supported?

The eUICC may transmit a response code (Status Word) in response to a response APDU header as a response to the terminal capability (step 940). Section 10.2.2 in European Telecommunication Standards Institute (ETSI) Technical Specification (TS) 102.221 as response code. It can be one of the Terminal Capability reply response codes defined in Status words of the commands. For example, when the eUICC transmits to the modem including, for example, default profile information as additional information, a response code indicating that there is additional data may be included and transmitted.

The eUICC 910 may determine whether MEP is supported in the received Terminal Capability, determine whether there is an activated profile in the corresponding eUICC 910 when there is no supporting identification information, and determine a maximum of one profile to be activated.

When only one is activated, the activated state of the activated profile may be maintained as described above. If two or more are activated, the eUICC 910 selectively checks whether there is a profile set as the default profile through the stored profile information or the stored setting information, and in the case of a profile(s) other than the profile set as the default profile, the eUICC It is set to process the status change by deactivation, and to process subsequent operations like a general eUICC that does not support MEP. If only one profile is left during the initialization process between the terminal and the card and the eUICC 910 implicitly changes to inactive without the user's consent, the eUICC 910 sends the modem 905 a Refresh Command according to the profile status change. It is possible to complete the deactivation process without sending

On the other hand, when the eUICC 910 checks the tag value for the eUICC-related capability from the received Terminal Capability or checks the tag and the MEP support identifier for the eUICC-related capability, the eUICC 910 maintains the activation profile in step 935. , it may be determined to select one or more profiles to maintain activation at a point in time when an identifier indicating to operate in the MEP mode is received or at a specific point in time after the corresponding point in time. As described above, the terminal may determine to operate in a non-MEP mode (step 945). When the terminal operates in the non-MEP mode, the terminal does not transmit the extended MANAGE CHANNEL including the identifier that can distinguish the logical interface to the MANAGE PORT or MANAGE CHANNEL. A Command APDU for MANAGE CHANNEL Open may be transmitted (step 950). Upon receiving the APDU, the eUICC 910 may recognize that there is no identifier for the MEP support described above in FIG. 9 , and determine that the operation should be processed in the general eUICC rather than the MEP mode. If it is determined that the eUICC 910 operates as a general eUICC, the eUICC 910 may determine whether there is an activated profile in the corresponding eUICC and determine a maximum of one profile to be activated. If only one is activated, the activation of the corresponding profile may be maintained as described above. If two or more are activated, the eUICC 910 selectively checks whether there is a profile set as a default profile through information of a stored profile or setting information, and if it is not a profile set as a default profile, all eUICC itself changes to inactive and , set to handle subsequent operations like general eUICC. Meanwhile, the profile set as the default profile may be defined as the activated profile having the lowest port number among the activated profiles. For example, when the MEP-supported removable eUICC 910 is previously mounted on the MEP-supported first terminal and the operation is performed as shown in FIG. 6, if the ISD-R dedicated port is not used, the activated profile The default profile having the lowest port number among them may be a profile having port number 0. Alternatively, in the case of using the ISD-R dedicated port, the ISD-R dedicated port uses port 0, and the default profile having the lowest port number among the activated profiles may be the profile having the port number 1. When the eUICC 910 implicitly changes to inactive without the user's consent by leaving only one profile in the initialization process between the terminal and the card, the eUICC 910 changes the profile state to the modem 905 (that is, to the inactive state) Change), it is possible to complete the deactivation process without sending a Refresh Command message. In addition, when the logical interface is not supported, the eUICC 910 and one interface created by the modem 905 are recognized as port number 0, and the port number of the default profile is set to the corresponding port in the initialization process. You can also process the mapping by changing it to number 0.

The eUICC 910 returns a normal response to the open command for the logical interface received from the modem 905, for example, the MANAGE CHANNEL OPEN Command APDU, and the APDU between the modem 905 and the eUICC 910 in the logical interface. Basic channel creation for transmission is completed. On the other hand, when the terminal 905 needs to receive additional information from the eUICC 910 in the initialization process between the modem and the card, the terminal selectively transmits a SELECT Command (App ID of ISD-R) (step 955) to receive additional information can also be obtained (step 955). When the eUICC 910 receives the corresponding Command APDU, for example, by replying an ISD-RPoprietaryApplicationTemplate (step 960), additional information including the presence or absence of an activated profile in the eUICC 910 may be provided to the terminal. Upon receiving the additional information, the terminal 905 may transmit the additional information obtained from the eUICC 910 to the terminal framework 901 (step 965) to provide it to be utilized in an application or system of the terminal. The transmitted additional information is shown as if the modem 905 is integrated and transmitted to the terminal framework 901 after receiving the ISD-R ProprietaryApplicationTemplate in FIG. 9 , but the modem 905 obtains information from the eUICC 910 Information acquired at a specific point in time may be transmitted sequentially or integratedly.

10A and 10B are diagrams illustrating a method of processing profile handling with reference to default profile information in an eUICC and a terminal when operating as an MEP eUICC in FIG. 8 according to an embodiment of the present disclosure.

10A and 10B, when the eUICC is inserted into the terminal, the modem 1005 recognizes the corresponding card and provides an operating environment for operation with the eUICC card such as power supply, clock synchronization, current, voltage, etc. in order to use the corresponding card. Perform activation and cold reset to set (step 1015). When the setting of the operating environment for using the corresponding eUICC is completed, the eUICC 1010 returns an ATR message to the terminal modem 1005 (step 1020). The ATR message is the first message the card transmits to the terminal, and message blocks consisting of up to 32 bytes are transmitted in a continuous chain.

The eUICC 1010 may reply to the terminal including whether it supports the eUICC functionality defined in GSMA SGP.22 as one of the message blocks defined as interface bytes in the message blocks of the ATR message (step 1020). Meanwhile, in the corresponding ATR message, the eUICC 1010 may reply by including information indicating a supported transport protocol and whether the corresponding transport protocol can be changed. The modem 1005 may determine to use the transmission protocol supported by the card as it is according to information included in the received ATR message. Alternatively, when the modem 1005 has an identifier for transmission protocol change possible in the ATR message, by additionally transmitting a request for transmission protocol and parameter determination to the eUICC 1010, to be used between the modem 1005 and the eUICC 1010 By negotiating a transmission protocol (step 1025), a transmission protocol to be used in the modem 1005 may be finally determined (step 1030).

10A and 10B, after receiving the ATR, the modem 1005 may implicitly select the MF of the eUICC 1010 (step 1028). The MEP support eUICC 1010 can process only EF (Elementary Files) of the MF level to be displayed as a default file system when there is no active profile, and additionally default when there is one or more activated profiles in the eUICC 1010 By processing only the file system and the file systems for one default profile to be displayed, the terminal can selectively process the default profile at the time. Alternatively, when there is one or more activated profiles in the eUICC 1010, even if there is a default profile, it is possible to process file systems for all activated profiles invisible at that time.

The terminal and the card may transmit the APDU message using either T=0 or T=1, which is a transport protocol defined in ISO 7816-3, through step 1030. APDU is a data unit consisting of a pair of command and response, and is used by an application to process messages between other applications. Modem 1005 is GSMA SGP, such as whether the corresponding terminal supports LPA or Enterprise function. The capability of the eUICC-related terminal defined in 22 may be included in the Terminal Capability and transmitted to the eUICC 1010 (step 1035). In addition, as described above, whether MEP is supported may be transmitted by adding it as a separate tag outside the eUICC support capability or in the eUICC support capability in the template of the terminal capability. Upon receiving the corresponding Terminal Capability message, the eUICC 1010 recognizes whether the corresponding terminal is a terminal supporting eUICC and additionally supports MEP as described above in FIG. A normal response to the Command APDU may be returned to the modem 1005 (step 1040). The normal response code may be one of the Terminal Capability reply response codes defined in section 10.2.2 Status words of the commands of ETSI TS 102.221. For example, the eUICC 1010 may transmit to the modem including, for example, default profile information as additional information. Meanwhile, in step 1030, the setting determination in the eUICC may include the following.

- If there is no indication of whether MEP is supported in Terminal Capability or marked as MEP not supported: As described above in FIG. If the file system of the default profile is not displayed, the file system of the default profile is additionally displayed in the default file system.

The eUICC 1010 may also process the setting decision for the file system at the time when the eUICC 1010 receives a Command APDU capable of determining the operation start with the MEP, not at the time when the terminal capability is received.

The modem 1005 may determine the operation of the MEP through predetermined information for determining the eUICC function support and the MEP support collected through the ATR message (step 1045). The operation determination of the modem 1005 in the MEP mode may be a specific point in time after the modem 1005 recognizes whether the eUICC 1010 supports MEP during the initialization process between the terminal and the card, and when the operation in the MEP mode is determined, The modem 1005 may transmit the Command APDU header to the eUICC 1010 including identification information indicating that the operation in the MEP mode is started (step 1050). A time point for determining an operation in the MEP mode and a time point for starting an operation in the MEP mode may be the same, but may not be the same. Although the present disclosure has been described as an example of a Command APDU having a MANAGE PORT as an INS, the present disclosure is not limited thereto, and it can also be determined as an APDU that can be identified as a logical interface management. An example of the transmission may include an INS indicating the MANAGE PORT as a CLA in the header of the Command APDU and indicating the initialization of the MANAGE PORT. Alternatively, although not shown in FIG. 10, when a code indicating MANAGE CHANNEL as CLA in the header of the Command APDU and a code indicating connection to a logical interface as INS is included and received, it may be determined that the MEP mode is started. Upon receiving the identification information indicating that the operation in the MEP mode is started, the eUICC 1010 may generate an eSIM port and may return a response APDU to the modem 1005 for generating the corresponding eSIM port. The generated eSIM port may be created by mapping the interface used for communication between the eUICC 1010 and the modem 1005 in the previous step to the port of the eUICC 1010. In this case, the eUICC 1010 may maintain to show only the file system that has been processed to be shown to the modem 1005 during SELECT MF in step 1028 . As the value of the returned ATR, a part or all of the ATR message transmitted in step 1015 may be included and returned (step 1055). 10 shows the step of selecting SELECT ISD-R after step 1050 for convenience of explanation, and shows that the eUICC creates an ISD-R eSIM port as a result of step 1050. However, depending on the settings in the terminal or card, the terminal - The port created first between cards may not be limited to the eSIM port used by ISD-R. For example, the ISD-R does not use the port initially created between the terminal and the card according to the settings of the terminal or card, and the terminal selects and uses another eSIM port as the port used by the ISD-R, or uses another eSIM port on the card. Ports can also allow ISD-R to be selected.

After entering the MEP mode, the modem 1005 creates an ISD-R and APDU transport channel and selects the ISD-R (step 1060). Receive the number, eSIM port number(s) for which the profile is activated, or eSIM port number(s) for which additional profiles are activated in addition to the default profile, eSIM port number for which the default profile is activated) (step 1065) necessary for port creation and assignment information can be obtained. In addition, the eUICC 1010 may transmit information on whether or not a detachable eUICC is attached to the ISDRPrprietaryApplicationTemplate. As information about the default profile, although the eSIM port number for which the default profile is activated is specified in step 1065, it is not limited thereto, and it is also possible to indicate and provide the information in one of the following ways.

- eSIM port number with default profile enabled

- ICCID of default profile

- ICCID of default profile and mapped port number

- PPR1 Profile ICCID

- eSIM port number with PPR1 profile enabled

- Default port number (displayed only when there is an active profile)

- Display the eSIM port number as a sequence, but indicate the default port first

The modem 1005 receiving the corresponding information may designate the number and number of eSIM ports to be opened by combining the information received with the ISDR ProprietaryApplicationTemplate with the information obtained from the terminal.

On the other hand, if the removable MEP support removable eUICC 1010 does not support PPR1 or the PPR1 profile is not installed, the default profile or the port number in which the default profile is activated may not be transmitted from the ISDR ProprietaryApplicationTemplate to the modem 1005. . On the other hand, the presence or absence of an activated profile acquired through ISDR ProprietaryApplicationTemplate, the maximum number of supported profile eSIM ports, the eSIM port number with the profile activated, the eSIM port number with the default profile activated, the ISD-R selection method, some or all of the removable eUICCs is an ATR message (step 1020) or a reply value of Terminal Capability (step 1040), or a template of the MF file of the eUICC 1010 selected by default in the modem 1005 after receiving the ATR message (Template) of some or all It is also possible for information to be returned.

The modem 1005 determines the number of profile eSIM ports by the smaller number among the maximum number of available baseband and the maximum number of supported profile eSIM ports transmitted from the eUICC 1010, and refers to the activated eSIM port number to open the port. It is possible to determine the number of (step 1070). The maximum number of available basebands may be the same as or different from the number of supportable basebands of the modem. For example, if the total number of basebands supported by the modem is three, but one is occupied by a physical SIM card, in this case, the maximum number of available basebands may be two. After determining the number of profile eSIM ports and the number of ports to be opened, the modem 1005 may transmit a port open command to the eUICC 1010 by the number of corresponding profile eSIM ports (step 1075). Also, when determining the port number, the modem 1005 may open the eSIM port by first allocating the corresponding port number when receiving port information mapped to the default port. Upon receiving this, the eUICC creates an eSIM port, and if there is an activated profile mapped to the corresponding port, it is possible to process the file system of the corresponding profile to be visible. If there is no active profile mapped to the corresponding port, only the default file system can be displayed when selecting the corresponding port. Additionally, after opening one basic channel in the corresponding port, the response APDU for generating the corresponding eSIM port may be returned to the eUICC (step 1080). If, in step 1065, the default profile or the default profile is received without an activated port number, the modem 1005 creates a port without considering the default profile, and in the eUICC 1010, the lowest profile among the activated port numbers. Only as many as possible in number order (that is, as much as the number of ports opened for the profile opened by the modem 1005) are mapped and left in the active state, and other profiles are deactivated or activated according to the setting of the eUICC 1010. It can also be dealt with by deciding to keep it in a state.

As the return value of the ATR returned in step 1080, a part or all of the ATR message transmitted in step 1020 may be included in the reply. For example, after the modem creates the ISD-R eSIM port, if the modem creates a port for assignment as the default profile in step 1075, eUICC maps the port to the default profile and shows the file system for the default profile to the modem. It can be processed so that Afterwards, when the modem creates an additional port and maps the corresponding port to the eUICC-activated profile, the file system for the mapped profile may be shown to the modem.

It has been received that the port numbers assigned to the profile activated in the eUICC 1010 are eSIM port #1, eSIM port #3, and eSIM port #5, respectively, and among them, the default port #3 is the port number for which the default profile is activated, and the modem ( When there are two basebands that can be connected in 1005), the modem 1005 may open up to two profile eSIM ports. In this case, the profile eSIM port open command transmitted from the modem 1005 to the eUICC 1010 may preferentially include port #3 and transmitted. For example, if the eSIM port number with the default profile enabled is #3, specify the eSIM port number as #3 as C-APDU <CLA=MANAGE PORT, INS=Open, PI=Port #3> First, open, and the modem 1005 may allocate the eSIM port in the order of the next lower number among the number mapped with the eSIM port number in which the profile provided by the eUICC 1010 is activated. For example, the following profile eSIM port open command transmitted to the eUICC 1010 may include eSIM port #1 and may be transmitted. Upon receiving the corresponding information, the eUICC 1010 maps the default profile activated on the eSIM port #3 to the received eSIM port #3, and maps the profile activated on the eSIM port #1 to the received eSIM port #1. can When the modem 1005 opens ports as many as the number of profile eSIM ports determined above and the modem 1005 completes all eSIM port creation, the modem 1005 indicates that all eSIM port creation for operation as the MEP has been completed. eUICC 1010 You can send an indicator that informs you. For example, the modem 1005 may transmit a MANAGE PORT (Initialize Complete) message to the eUICC 1010 (step 1085).

Meanwhile, the modem 1005 may inform the eUICC 1010 of the number of eSIM ports to be created at a specific point in the above-described procedure instead of notifying that all eSIM ports have been created.

As described above in FIG. 9, when the modem 1005 does not acquire the port number assigned to the default profile, the modem 1005 determines the port number without considering the default profile port number and sends it to the eUICC 1010. You may be informed. When the port number allocated in the first opened MANAGE Port Command APDU is different from the port number of the default profile stored in the eUICC 1010, the eUICC 1010 includes the port number of the default profile stored in the reply value to the modem (1005) can be sent. The modem 1005 may change the number of the opened port with the corresponding received port number.

Alternatively, the eSIM port of the default profile stored by the eUICC 1010 may be changed to the corresponding eSIM port number received from the modem 1005 and stored, and the connection may be processed using the corresponding port number.

As also described above in FIG. 9, when the setting information for the default profile is not in the eUICC 1010, the eUICC 1010 is an eSIM port number according to the number of ports allocated to be usable in the profile among the number of ports opened by the terminal. It is possible to maintain the active state of the profile(s) in the order of the lowest number among them, and to deactivate or maintain the active state of the profiles that are not mapped to the eSIM port. When a part of the number of ports allocable to the eUICC 1010 in the terminal is not for using the profile, the terminal may inform the eUICC 1010 of the corresponding information. As an example, the terminal transmits the Command APDU for the Get Configuration setting to the eUICC 1010 as data of the Command APDU, including the number of ports that the terminal can open with the eUICC and the number of ports that can be opened for profile purposes. can also be transmitted.

An indicator informing the eUICC (1010) that all eSIM port creation is complete, for example, when the eUICC (1010) receives a MANAGE PORT (Initialize Complete) message, the eUICC (1010) maps to a profile activated by itself Among the assigned port numbers, profiles to which eSIM ports are not assigned can be deactivated. For example, the profile assigned to port #5 may be changed and processed by the eUICC 1010 in an inactive state. Meanwhile, as described above, the modem 1005 may inform the eUICC 1010 of the number of eSIM ports to be created at a specific point in the above-described procedure instead of notifying that all eSIM ports have been created. In this case, when all of the number of eSIM ports are received by referring to information on the number of eSIM ports to be generated by the modem 1005 in the eUICC 1010, the profile to which the eSIM ports are not assigned may be deactivated.

When the eUICC 1010 implicitly handles deactivation of the profile without the user's consent as an operation of the initialization process between the terminal and the card, the eUICC 1010 deactivates the modem 1005 without sending a Refresh Command according to the profile status change. processing can be completed. On the other hand, the modem 1005 refers to the information obtained from the eUICC 1010 and transmits information such as the eSIM port, the generated profile eSIM port number, and the default profile activated port number through the finally determined ISD-R to the terminal framework 1001 ) to (step 190), it can be provided for use in applications (including LPA) or systems of the terminal.

11A and 11B are diagrams illustrating a method of processing a port change (swap) to be used between profiles in a terminal operating in an MEP mode and an eUICC according to an embodiment of the present disclosure.

For convenience of explanation, it is assumed that profile 1 is activated in eSIM port #2 and profile 2 is activated in eSIM port #1 as in FIG. 5 above, and profile 1 assumes that PPR1 is a set profile. do. There may exist a case where the user 1101 wants to change and use the basebands used by the profile 1 and the profile 2 . That is, referring to FIG. 5 , when profile 1 uses 5G and profile 2 uses 4G, the user 1101 uses LPA 1105 or LPA 1105 in the integrated SIM management application for profile 1 with 4G You can select the user menu for port change to use . In the past, when receiving the user's input (eg, clicking a menu on the UI or changing the location between profiles), the eUICC (1115) must first deactivate the status for Profile 1, but since the profile cannot be deactivated, the eUICC ( 1115) returns an error about inability to process to the LPA 1105, and the LPA 1105 cannot process the corresponding command.

11A and 11B , the user 1101 may select the user menu for port change to use 4G for profile 1 in the LPA 1105 or the SIM management application in which the LPA 1105 is integrated (step 1118). ). The MEP support LPA 1105 receiving the corresponding message may generate a command for port-to-port swap and transmit it to the eUICC 1115 . The above command is ES10c. SwapPort (Port #1, #2) or ES10c. It can be one of the messages like SwapPort (ICCID #1, #2).

The order entering the Swap Port() can indicate the order in which port changes are processed, for example, in the case of SwapPort (Port #1, #2) in option 1 (1120), port #1 to port #2 in the order Process the change, and in the case of SwapPort (ICCID #1, #2) of option 2 (1140), recognize and process the change from port #1 with ICCID #1 enabled to port #2 with ICCID #2 enabled first. It is also possible to In the above case, sequential processing means that the eUICC requests a Refresh Command (Reset or Profile State Change) to the modem in the order of port #1 or ICCID #1, port #2, which is the port to be changed, and then port #1. it could be

In option 1 (1120), eUICC (1115) is ES10c. SwapPort (Port #1, #2) can be received (step 1125), ES10c. Upon receiving the SwapPort (Port #1, #2), the eUICC 1115 may check whether the requested ports #1 and #2 are both open and valid ports (step 1130). As a result of the check, if at least one of the ports is not open, the eUICC 1115 may return an error message to the LPA 1105 (step 1135). For example, an error reason such as ErrorNoPort,Port# may be returned in step 1135 .

In option 2 (1140), eUICC (1115) is ES10c. SwapPort (ICCID #1, #2) can be received (step 1145). ES10c. Upon receiving the SwapPort (ICCID #1, #2), the eUICC 1115 may check whether all profiles corresponding to ICCIDs #1 and #2 are activated (step 1150). As a result of checking, if even one profile corresponding to ICCIDs #1 and #2 is not activated, the eUICC 1115 may return an error message to the LPA 1105 (step 1155). For example, in step 1155, an error reason such as profileNotInEnabledState,ICCID may be returned. Upon receiving the error message, the LPA 1105 may notify/end the processing method upon receiving the error.

In addition, although not shown in FIG. 11, by combining option 1 and option 2 with option 3, ICCID #1 as a parameter of Swap Port (), and port #2 pair to be used for change by ICCID #1 is also possible. (Example: Swap Port (ICCID #1, Port #2). In this case, whether the corresponding ICCID #1 is activated, whether the port # to change is open, and if another activated ICCID other than the corresponding ICCID #1 is It is determined whether there are any, and if any one of them is not satisfied, an error message is returned to the LPA and the process can be terminated.

The eUICC (1115) determines through step 1130 of option 1 (1120) or step 1150 of option 2 (1140) according to the received SwapPort Command. As a result, if processing is possible, the information of the port in the profile metadata from the stored profile information indicates that will be changed (for example, Profile to be enabled on Port #2 in the metadata of Profile 1 (ICCID#1), Profile to be enabled on Port #2 in the metadata of Profile 2 (ICCID#2)) ( Step 1160), refresh for eSIM ports included in SwapPort() can be processed (steps 1165 and 1170).

In step 1165, one or a plurality of Refresh Commands may be transmitted. That is, a plurality of port numbers may be included and transmitted as a Proactive Command for one Refresh, or a Proactive Command for Refresh may be transmitted for each port.

In step 1170, reset must be performed for each target port to be changed.

Refresh and Reset may include at least one of the following methods.

For example, the eUICC requests the refresh including the port number to be changed through the sequential eSIM port included in SwapPort() on the modem or the ICCID-enabled eSIM port. can In other words, when option 1 1120 is SwapPort (Port #1, #2) in step 1165, the eUICC 1115 transmits a Proactive Command including the port number to be changed through port #1 to the modem 1110. The port refresh process may be requested, and a port refresh process may be requested to the modem 1110 by sending a Proactive Command including the port number to be changed through port #2, thereby requesting the refresh process for the corresponding port to be changed.

For example, in the reverse order included in SwapPort() in the modem 1110, the eUICC 1115 requests the refresh for port reset sequentially through the eSIM port or the ICCID-enabled eSIM port. Port Refresh can be processed according to In other words, the eUICC 1115 may transmit a REFRESH Proactive Command corresponding to a port Reset without a port number in the order of port #2 and port #1. The modem that receives the message performs a reset on the corresponding port with eUICC.

For example, through one of the eSIM ports used by the ISD-R or a dedicated port, the eUICC 1115 may transmit a request to start performing the REFRESH Proactive Command for the entire eUICC platform to the modem 1110 . Upon receiving the request, the modem 1110 may reset the entire eUICC.

For example, through the port used by one ISD-R, as described above, the eUICC 1115 transmits two independent Proactive Commands including the port number to be used for changing the profile to transmit the port refresh process to the modem 1110. you can request

For example, as described above, through the port used by one ISD-R, the eUICC 1115 transmits one Proactive Command including the port number to be used for changing the profile to request port refresh processing to the modem 1110. have.

In addition, although not shown in FIG. 11, as another example of replacing steps 1165 and 1170, the eUICC 1115 through one of the eSIM ports used by the ISD-R (existing port number, change port number) list It is possible to request port refresh to the modem 1110 by transmitting one REFRESH Proactive Command for swap including .

The modem 1110 that has received the corresponding Proactive Command(s) may process the corresponding port(s) or the entire platform by performing a Refresh command. When receiving a Proactive Command including a plurality of port numbers, the modem performs a batch network release procedure on the received ports instead of deleting cache values after a network detach request for each port and assigns cache values to the ports. After deleting them all, you can start a new card session by resetting each port. If the modem receives one port number or a plurality of refresh commands for port reset without a port number, the modem 1110 may sequentially perform refresh processing for each port. That is, the network connection to the profile used for each port can be released, the cache value can be deleted, and a reset can be performed.

When the eUICC (1115) resets the corresponding port(s) or platform as a result of the Refresh process, the mapping for the corresponding profile and port is changed (step 1175), and the normal response result is returned to the LPA ( 1105) (step 1180).

Upon receiving the corresponding response, the LPA 1105 may recognize that the profile and port mapping change has been normally completed (step 1185), and may provide the corresponding processing result to the user 1101. Instead of step 1180, after the Reset is completed, the LPA 1105 uses the profile information returned through the GetProfileInfo() command to the eUICC 1115 or the port of the eUICC 1115 through a template called when ISD-R is selected. It may also be possible to check whether the mapping between and profile has been changed normally.

On the other hand, it may be possible if the Refresh Command cannot be transmitted from the ISD-R port to the modem (step 1195). In this case, the eUICC 1115 may change and store the port number for which the profile is activated to the port number to be changed and activated (step 1196).

Then, the eUICC 1115 replies to the LPA 1105 a success response message including the port numbers to be changed by each profile (step 1197) or the LPA 1105 adds the change port numbers to the success response message, The LPA 1105 may transmit it to the modem 1105 (step 1198). Upon receiving this, the modem 1110 may perform a batch network release procedure for networks used by each existing profile, delete cache values for the corresponding ports, and reset the corresponding ports ( 1198). After resetting, the modem 1110 may perform a network attach procedure by using profile information activated on the changed port in the baseband connected to the corresponding port.

12 is a diagram schematically illustrating an internal structure of a terminal in a wireless communication system according to an embodiment of the present disclosure.

Referring to FIG. 12 , the terminal 1200 includes a transceiver 1210 , a message processing unit 1220 , a control unit 1230 , a memory 1240 , and a screen display unit 1250 . However, the components of the terminal 1200 are not limited to the above-described example. For example, the base station may include more or fewer components than the aforementioned components. In addition, at least one configuration of the terminal 1200 may be implemented in the form of one chip. According to some embodiments, the transceiver 1210 may perform a function for transmitting and receiving a signal through a wireless channel, such as band conversion and amplification of the signal. That is, the transceiver 1210 includes an RF processor that up-converts a baseband signal into an RF band signal, transmits it through an antenna, and down-converts an RF band signal received through the antenna into a baseband signal, and a transmit filter. , a reception filter, an amplifier, a mixer, an oscillator, a digital to analog converter (DAC), an analog to digital converter (ADC), and the like.

In addition, the transceiver 1210 may receive a signal through a wireless channel, output it to the processor 1230 , and transmit a signal output from the controller 1230 through a wireless channel. The transceiver 1210 may perform beamforming. For beamforming, the transceiver 1210 may adjust the phase and magnitude of each of signals transmitted and received through a plurality of antennas or antenna elements. In addition, the baseband processing unit in the transceiver 1210 may perform a conversion function between the baseband signal and the bit stream according to the physical layer standard of the system. For example, when transmitting data, the baseband processing unit generates complex symbols by encoding and modulating the transmitted bit stream. Also, upon data reception, the baseband processing unit restores the received bit stream by demodulating and decoding the baseband signal provided from the RF processing unit. For example, in the case of OFDM (orthogonal frequency division multiplexing), when data is transmitted, the baseband processing unit generates complex symbols by encoding and modulating the transmission bit stream, and after mapping the complex symbols to subcarriers, IFFT ( OFDM symbols are constructed through inverse fast Fourier transform (CP) operation and cyclic prefix (CP) insertion.

In addition, upon data reception, the baseband processing unit divides the baseband signal provided from the RF processing unit into OFDM symbol units, restores signals mapped to subcarriers through a fast Fourier transform (FFT) operation, and performs demodulation and decoding. can restore the received bit string.

The transceiver 1210 may be defined as a transceiver and may include a message transceiver. The message processing unit 1220 may perform an operation of determining what kind of message the data transmitted or received through the transceiver 1210 is. For example, the message processing unit 1220 may determine whether the received message is a radio resource control (RRC) layer control message (including a system information block (SIB)) or a user data message. The message processing unit 1220 may be included in the control unit 1230 .

The controller 1230 controls overall operations of the terminal 1200 . For example, the control unit 1230 transmits and receives signals through the message processing unit 1220 . Also, the controller 1230 writes and reads data in the memory 1240 . There may be at least one controller 1230 . For example, the controller 1230 may include a communication processor (CP) that controls for communication and an application processor (AP) that controls an upper layer such as an application program. According to some embodiments, when there is operator configuration information for device change stored in advance in the memory 1240 , the controller 1230 requests the corresponding information to the memory 1240 and the screen display unit 850 is displayed. Alternatively, additional actions can be processed by receiving the corresponding information.

The control unit 1230 , the message processing unit 1220 , and the transceiver 1210 may control the terminal 1200 to access a network of a selected operator according to a user or terminal setting. In addition, according to some embodiments, the control unit 1230 selects a service by matching the data recorded through the memory 1240 or information collected through the control unit 1230 , the message processing unit 1220 , and the transceiver 1210 . The terminal may perform a process of inferring information that can be referred to. According to some embodiments, the controller 1230 may determine whether user consent is required for specific information stored in the terminal 1200 , and display it on the screen display unit 1250 .

Also, the controller 1230 may control the terminal 1200 to perform a corresponding operation. According to some embodiments, the controller 1230 may include an LPA in charge of driving and controlling the eUICC, and an application in which the LPA is integrated. In addition, according to some embodiments, the control unit 1230 processes a specific Command APDU request to a communication processor (CP) by interpreting information received by the LPA or an application, or transfers part or all of the requested information from the memory 1240 . It may include a terminal framework that collects and returns to the LPA or application.

The controller 1230 may determine to operate in the MEP mode by synthesizing predetermined information obtained from the eUICC 1260 through the terminal 1200 and the transceiver 1210 and reply to the eUICC 1260 . The eUICC 1260 is controlled by the controller 1230 , and according to an embodiment of the present disclosure, the eUICC 1260 may perform each management command and transmit a Proactive Command to a modem or the like.

The memory 1240 stores data such as a basic program, an application program, and setting information for the operation of the terminal 1200 . In the embodiment, the memory 1240 is composed of a storage medium or a combination of storage media such as ROM, RAM, hard disk, CD-ROM, and DVD, and is stored in terminal capability according to the request of the controller 1230 . data can be provided. Also, the memory 1240 may be integrated with the controller 1230 and a system on chip (SoC).

On the other hand, in the embodiment of the present disclosure, the eUICC 1260 is detachably present as a separate module outside the terminal 1200 and may be inserted into the terminal. The eUICC 1260 may also be configured to include some or all of other parts except for the screen display unit 1250 in the module of the terminal 1200 therein. For example, according to an embodiment of the present disclosure, the control unit of the eUICC 1260 processes and obtains the Terminal Capability information of the terminal 1200 received through the message transmission/reception unit through the message processing unit, and then through the corresponding message information, non- If it is determined that the eSIM terminal does not support eSIM or MEP, the profile status in the eUICC 1260 is changed by referring to the status information of the profile stored in the memory and acquiring/combining information about whether there is an activated profile and the profile set as the default profile. can do. Meanwhile, it should be noted that the terminal 1200 may include UICC, eUICC, iSSP, and iUICC as a built-in hardware security module.

The screen display unit 1250 displays the information processed/processed by the control unit 1230, or through the processing of the control unit 1230, a progress process for an operation performed by the terminal 1200 or consent to an event requesting the user to perform, etc. can be displayed. According to some embodiments, the stored profile information, the default profile setting menu, the default profile input, and the input result may be displayed in response to the user. According to some embodiments, LPA or an application in which LPA is integrated may include a screen display unit 1250 and a control unit 1230 .

13 is a diagram illustrating a method of processing a change between a port to be used by a profile in a terminal operating in an MEP mode and an eUICC according to another embodiment of the present disclosure. In particular, FIG. 13 describes a method for processing by including a swap indicator in the profile activation command (ES10c.EnableProfile).

In FIG. 4, a procedure for profile activation processing for a specific port in the MEP is described, and in FIG. 13, the change indicator will be mainly described.

13, when the change indicator is included in the ES10.EnableProfile Command and transmitted (step 1330), the eUICC 1310 generates an error even when the target profile (profile having ICCID of ES10.EnableProfile Command) is in the active state. Without returning, it is additionally determined whether another profile is activated in the target port number for activating the corresponding profile (step 1335). At this time, if both are in an active state, the eUICC 1310 performs the subsequent procedure for changing the port, otherwise the eUICC 1310 returns an error to the LPA 1305 and may terminate the procedure. .

When the eUICC 1310 determines that it is possible to change the port of the profile as a result of the determination in step 1335, the eUICC 1310 sends a refresh command to the modem 1315 before requesting a refresh command (step 1345). Mark the port number that the profiles will use to change.

When refreshFlag is set in the ES10c.EnableProfile Command (step 1340), the eUICC 1310 may transmit a REFRESH Proactive Command for the ports to be changed to the modem 1315 (step 1345). As described above in FIG. 11 , REFRESH Proactive Command is transmitted one by one for each port to which a change is applied, or two Proactive Commands are sequentially transmitted through one port among the target ports or an ISD-R dedicated port, or one Proactive Command It may also be possible to transmit a command including a plurality of port numbers. In FIG. 13 , a case in which a plurality of port numbers are included in one Proactive Command is transmitted through ISD-R dedicated ports as an example. When receiving a Proactive Command including a plurality of port numbers (two port numbers because it is a port change), the modem 1315 performs a batch network connection procedure for a network to which the received port numbers are mapped and uses, and After all cache values are deleted, a new card session can be started through reset for each port (step 1350). If Reset is performed, the eUICC may map the profile to the marked new port to complete the card initialization procedure (step 1355).

When refreshFlag is not set (step 1360), the eUICC 1310 may change the profile port mapping to the port number to be activated as described above (step 1365). Then, the eUICC 1310 replies to the LPA 1305 a success response message including the port numbers to be changed by each profile (step 1370) or the LPA 1305 adds the port numbers to the success response message, The LPA 1305 may transmit it to the modem 1315 . Upon receiving this, the modem 1315 may perform a batch network release procedure for networks used by each existing profile, delete cache values for the corresponding ports, and process them to reset the corresponding ports. (Step 1375). After resetting, the modem 1315 may perform a network connection procedure in the baseband connected to the corresponding port by using profile information activated for the changed port (step 1380).

As described above, when the MEP-supported eUICC has been inserted into the first terminal before being inserted into the second terminal and operated in the MEP mode, two or more profiles may exist in the corresponding eUICC inserted into the second terminal, Two or more profiles may all have an activated state.

As described above in step 830 of FIG. 8 and in FIG. 9, the eUICC received information on eUICC-related capability as information on terminal capability of the terminal, but information on the corresponding terminal capability or received from the terminal as a separate APDU As one piece of information, if information on MEP support of the terminal is not received, the eUICC maintains only the default profile for baseband connection in the active state, and other activated profile(s) can be implicitly deactivated. have.

However, with the setting of the MEP-supported eUICC, it may be possible to process by maintaining all the states of the profiles in the eUICC in an active state. For example, if profile A, profile B, and profile C exist as three profiles in the eUICC inserted into the second terminal, and all three profiles are in an active state, the eUICC is the default profile in the terminal-card-to-card initialization process. Even if only the profile (eg, profile A) set to . have. In this case, the eUICC maintains the status of Profile B and Profile C in the active state, but the network connection is not possible because there is no baseband connection, so the eUICC sets Profile B and Profile C to the inactive state defined in GSMA SGP.22. can be processed as In the present disclosure, this state will be described as a “temporarily activated state” for convenience of description.

As described above, the profiles in the eUICC may be initialized in the SEP mode in an active state, but in a state in which a channel for baseband connection is not provided from the modem. As described above, for profiles in a state in which the profile is activated or there is no baseband connection, the eUICC may mark and store identification information for a “temporarily active state” in the profile state information. The corresponding time point may be processed and stored by the eUICC at a specific time point of terminal-card-to-card initialization.

As a method of marking and storing identification information, a method of indicating that the eUICC is in a temporary activation state as a new state value or a method of using a separate identifier indicating a temporary activation state may also be possible. For example, as one of the ProfileState values included in ProfileInfo, temporaryEnabled(2) is added (ProfileState::= INTEGER {disabled(0), enabled(1), temporaryEnabled(2)}), or temporaryEnabled as additional data in ProfileInfo It may also be possible to add identifiers such as Flags.

14 to 16 , a profile in a “temporarily activated state” that is not connected to a baseband even though the state of the profile is maintained in an activated state during the initialization process is referred to as profile 1A. In addition, unless otherwise specified, LPA in FIGS. 14 to 16 refers to an LPA not supporting MEP, and a modem refers to a modem not supporting MEP.

14 is a diagram illustrating a method of returning profile status information when a removable MEP-supported UICC is inserted into an MEP-non-supported eSIM terminal according to an embodiment of the present disclosure.

As described above, the profiles in the eUICC may be initialized in the SEP mode in an active state, but in a state in which a channel for baseband connection is not provided from the modem. As described above, for a profile in a state in which a profile is activated or in a state in which there is no baseband connection, the eUICC can mark, store, and use the state information of the corresponding profile.

Referring to FIG. 14 , in option 1 1401 , the MEP non-support LPA 1405 in the SEP mode may request ES10c.GetProfileInfo( ) to the MEP-support eUICC 1410 to obtain profile information (step 1415 ). The eUICC 1410 having received the profile information request from the LPA 1405 may return the profile information to the LPA 1405 by including the profile status information as profile information (step 1420).

If two profiles (eg, profile 1A and profile 2) exist in the eUICC, the eUICC 1410 may check whether identification information indicating that the temporary activation state is marked in the state of the profile 1A and the profile 2 is marked. .

Among the values included in ProfileInfor of Profile 1A, for example:

1. ProfileState=temporaryEnabled(2) or

2. ProfileState=enabled(1) and temporaryEnabled Flag set

When information on the temporary activation state is marked as shown, the eUICC 1410 returns to the LPA 1405 as it is when operating in the MEP mode, and when not operating in the MEP mode, ProfileState= in both cases 1 and 2 It is also possible to reply to LPA(1405) by changing to disabled(0). For example, the eUICC 1410 may reply to the LPA 1405 by indicating Profile 1A State=Disabled, Profile 2 State=Enabled. The LPA 1405 may refer to predetermined information such as profile information obtained from the eUICC 1410 through ES10c.GetProfileInfo() and wireless access information received from the terminal, and may display the profile list and status information to the user.

Continuing to refer to FIG. 14, in option 2 1402, when the eUICC 1410 receives ES10c.GetProfileInfor() from the LPA 1405 (step 1425), the LPA includes the status information of the profile as profile information. 1405 may be returned (step 1430).

At this time, if two profiles (eg, profile 1A and profile 2) exist in the eUICC 1410, the eUICC 1410 is the state of the profile 1A and the profile 2, and identification information to know that it is a temporary activation state is marketed. can check if there is

Among the values included in ProfileInfo of Profile 1A, for example:

1. ProfileState=temporaryEnabled(2) or

2. ProfileState=enabled(1) and temporaryEnabled Flag set

When identification information for the temporary activation state is marked as shown, the eUICC 1410 returns to the LPA 1405 as it is when operating in the MEP mode, and when not operating in the MEP mode, ProfileState in both cases 1 and 2 It is also possible to reply to the LPA 1405 with =enabled(1). For example, the eUICC 1410 may reply to the LPA 1405 by indicating Profile 1A State=Enabled, Profile 2 State=Enabled. The LPA 1405 may refer to predetermined information such as profile information obtained from the eUICC 1410 through ES10c.GetProfileInfo() and wireless access information received from the terminal, and display the profile list and status information to the user ( Step 1435). On the other hand, in the case of an LPA that does not support MEP, the LPA 1405 may be configured so that only one value for which the Profile State is returned as “enable” is possible. In this case, when there are two or more “enabled”, it is recognized as an error, and predetermined information obtained from the terminal, for example, baseband or IMEI information allocated for each profile is combined and configured and shown to the user, so that the user can Deactivation of one profile can be determined with reference to the information. Upon receiving the user's input, the LPA 1405 may transmit ES10c.disableProfile to the eUICC 1410 to process explicit deactivation of one profile. This will be further described in the example of FIG. 16 below.

15 is a diagram illustrating a method of processing activation of a profile in a temporary activation state when a removable MEP-supported UICC is inserted into an MEP-non-supported eSIM terminal according to an embodiment of the present disclosure.

14 , the LPA 1505 may collect profile information and display it to the user 1501 , and the user 1501 may check and change the state of a specific profile through the displayed profile information.

Referring to FIG. 15 , the user 1501 may input to the LPA 1505 an input to receive a network service through profile 1A instead of profile 2 at a specific time with reference to the marked profile list and profile state information. As an example, the user 1510 may be enabled by selecting the profile 1A for use of the communication service in the LPA 1505 (step 1520). Through a user input, the LPA 1505 may transmit a profile activation request command to the eUICC 1510 . For example, the LPA 1505 may transmit the ES10c.EnableProfile command including the ICCID of profile 1A to the eUICC 1510 (step 1525).

After receiving the ES10c.EnableProfile command including the ICCID from the LPA 1505, the eUICC 1510 may additionally determine whether identification information on the temporary activation state exists in the process of verifying that the profile activation process is possible (step 1530). ).

If identification information for the temporary activation state does not exist, the MEP support eUICC 1510 may return an error code to the LPA 1505 as a processing result (step 1535). The error code may be one of profileNotInDisabledState, disallowedByPolicy, or UndefinedError.

If identification information indicating that the profile is temporarily activated is marked in the profile information stored and managed by the eUICC 1510, the eUICC 1510 does not return an error code and activates the profile defined in GSMA SGP.22 Recognized as a procedure, profile 2 may be implicitly disabled and profile 1A may be processed as an activated state (step 1535). As an example, it can be processed like the profile activation procedure defined in GSMA SGP.22 described above, and when the Refresh Flag is set, for example, the following procedure can be included for processing.

Step 1. In the eUICC 1510 , the state of profile 1A may be marked as “to be enabled” and the state of profile 2 as “to be disabled” may be marked.

Step 2. A Refresh Proactive Command <mode=Profile State Change or eUICC Memory Reset> may be transmitted from the eUICC 1510 to the modem 1515 .

Step 3. The modem 1515 may request a Terminal Response or Reset from the eUICC 1510 after deleting the cached information on Profile 2 and performing a network detach procedure.

Step 4. When the modem-card is initialized, the eUICC 1510 may perform a state change process for profile 1A from a “temporarily activated state” to an active state, and profile 2 may perform a state change process from an inactive state.

16 is a diagram illustrating a method of processing deactivation of a profile when a removable MEP-supporting UICC is inserted into a non-MEP terminal according to an embodiment of the present disclosure.

Referring to FIG. 16 , as in the embodiment of FIG. 14 , the MEP non-support LPA 1605 refers to the profile information received from the eUICC 1610 and additionally collected information from the terminal, and the user 1601 provides a profile. It can be expressed as information for managing (step 1620). When the MEP support eUICC (1610) receives GetProfileInfo() from the LPA (1605) and returns the profile in the temporary enabled state as Profile 1A State=Enabled, the LPA (1605) has two or more profiles in the active state. can be received. In this case, since the user 1601 may be confused as if two basebands are available, the LPA 1605 may mark and process profile information for the user 1601 in the following ways.

1. When the status of two or more profiles is received in an activated state, an error occurs, and a screen requesting the user 1601 for deactivation processing for one profile is displayed to allow the user to change the status of one profile to an inactive state. How to request a change.

2. Profiles that are not assigned baseband through information indicating whether the profile is connected to a wireless access network or not, that is, information indicating whether the profile is connected to a radio access network, etc. A method of notifying the user that only one profile is available for network use by displaying additional information indicating that the profile is not network-connected.

When the user 1601 selects the profile 1A at a specific point in time and wants to activate it in a network usable state for a communication service, it can be processed according to the procedure of the embodiment of FIG. 15 .

Continuing to refer to FIG. 16 , in option 1 1625 , at a specific point in time, the user 1601 may select profile 1A to change the profile state to an inactive state (step 1630 ). For example, in step 1620, when the LPA 1605 detects activation of two or more profiles and requests the user 1601 to deactivate one of the two activated profiles, the user 1601 can select profile 1A. have. Upon receiving the input of the user 1601, the LPA 1605 transmits the ES10c.DisableProfile command including the ICCID of profile 1A to the eUICC 1610 according to the procedure defined in SGP.22 for changing the state of the profile to the eUICC 1610. A state change of 1A may be requested (step 1635). Upon receiving the ES10c.DisableProfile command, the ISD-R (not shown) of the eUICC 1610 may change the state of the corresponding profile 1A to the inactive state, and return a result of the deactivation change process to the LPA 1605 . At this time, since the profile 1A is not previously connected to the network, the eUICC 1610 directly (or through the LPA 1605) MEP non-supporting modem 1615 may omit the refresh processing request according to the state change. There is (step 1640).

Continuing to refer to FIG. 16 , in option 2 ( 1645 ), at a specific point in time, the user may select profile 2 to change the profile state to an inactive state (step 1650 ). For example, in step 1620, when the LPA 1605 detects activation of two or more profiles and requests the user 1601 to deactivate one of the two activated profiles, the user 1601 can select profile 2 have. At this time, the user 1601 makes the LPA 1605 activate the profile 1A by deactivating only the profile 2, or by providing the user consent for the activation processing of the profile 1A while deactivating the profile 2 (step 1650) You can decide whether or not to process it further so that it can be processed.

When the user 1601 decides to deactivate only profile 2, the LPA 1605 sends the ES10c.DisableProfile command including the ICCID of profile 2 to the eUICC (1610) according to the procedure defined in SGP.22 to change the state of the profile. ) to request a change in the state of the corresponding profile 2 (step 1655). Upon receiving the ES10c.DisableProfile command, the ISD-R (not shown) of the eUICC 1610 may change the state of the corresponding profile 2 to an inactive state, and may return a processing result according to the state change to the LPA 1605 . At this time, since Profile 2 is not previously connected to the network, the eUICC 1610 may directly (or through the LPA 1605) perform a refresh processing request according to the state change to the modem 1615 ( 1660 step).

When the user 1601 determines the activation processing of profile 1A while deactivating profile 2, the LPA 1605 performs steps 1655 and 1660, and additionally sends the ES10c.EnableProfile command including the ICCID of profile 1A to the eUICC 1610 ) to request a change in the state of the corresponding profile 1A (step 1665). Upon receiving the ES10c.EnableProfile command including the ICCID of profile 1A, the eUICC 1610 may process by checking whether identification information for the temporary activation state is processed as in steps 1525 to 1535 of the embodiment of FIG. 5 (step 1670). On the other hand, not limited to the non-MEP terminal, when the MEP support eUICC 1610 is inserted into a terminal operating in the MEP mode, the profile is inactive according to the setting of the eUICC 1610. In the case of completing , when the profile activation process is requested from the MEP support LPA after being marked as a temporary activation state, the identification information on the temporary activation state can be checked to determine whether the profile is activated or whether an error is returned. have.

The various embodiments of the present disclosure and terms used therein are not intended to limit the technical features described in the present disclosure to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. In this disclosure, "A or B", "at least one of A and B", "at least one of A or B," "A, B or C," "at least one of A, B and C," and "A , B, or C" each may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as "", "", or "first" or "second" may be used simply to distinguish one element from another, limiting the element in another aspect (eg, importance or order). I never do that. Where one (eg ) component is referred to as “coupled” or “connected” to another (eg ) component, with or without the terms “functionally” or “communicatively”; It means that the one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term “module” used in the present disclosure may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic block, component, or circuit. A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present disclosure provide software (eg, a program) including one or more instructions stored in a storage medium (eg, an internal memory or an external memory) readable by a machine (eg, an electronic device). can be implemented as For example, a processor of a machine (eg, an electronic device) may call at least one of one or more instructions stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to an embodiment, the method according to various embodiments disclosed in the present disclosure may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play Store™) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly or online between smartphones (eg: smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repetitively, or heuristically, or one or more of the operations are executed in a different order, omitted, or , or one or more other operations may be added.

In the specific embodiments of the present disclosure described above, components included in the present disclosure are expressed in the singular or plural according to the specific embodiments presented. However, the singular or plural expression is appropriately selected for the context presented for convenience of description, and the present disclosure is not limited to the singular or plural component, and even if the component is expressed in plural, it is composed of the singular or singular. Even an expressed component may be composed of a plurality of components.

Meanwhile, although specific embodiments have been described in the detailed description of the present disclosure, 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 be defined by the claims described below as well as the claims and equivalents.

Claims (6)

A method for setting a default profile of a terminal including a removable embedded universal integrated circuit card (eUICC) supporting multiple Enabled Profiles (MEP), the method comprising:
receiving a first message requesting activation of a first profile selected by a user of the terminal from a Local Profile Assistant (LPA) of the terminal;
determining whether activation of the first profile is possible by checking whether the first profile is activated and a Profile Policy Rule (PPR) for the first profile based on the first message;
performing an activation processing procedure for the first profile when it is determined that activation of the first profile is possible as a result of the check; and
and setting a first profile that has performed the activation processing procedure as a default profile.
The method according to claim 1, wherein when a plurality of profiles are activated in the eUICC after performing an activation processing procedure for the first profile,
The process of confirming whether the PPR for the activated first profile is a specific PPR; and
When the PPR for the activated first profile is a specific PPR, the method further comprising the step of setting the activated profile as a default profile.
The method of claim 1, wherein when the eUICC is used in another terminal before being inserted into the terminal,
The method of claim 1, further comprising: determining whether a state of a profile to which a port is not allocated is changed based on the number of ports allocated to the eUICC and information on the default profile.
In a terminal comprising a removable embedded Universal Integrated Circuit Card (eUICC) supporting multiple Enabled Profiles (MEP),
transceiver; and
Controls the transceiver to receive a first message requesting activation of a first profile selected by a user of the terminal from a Local Profile Assistant (LPA) of the terminal, and based on the first message, When it is determined whether activation of the first profile is possible by checking the activation status and a Profile Policy Rule (PPR) for the first profile, and it is determined that activation of the first profile is possible as a result of the check , a control unit that performs an activation process for the first profile, and sets the first profile on which the activation process is performed as a default profile.
According to claim 4, wherein the control unit,
If a plurality of profiles are activated in the eUICC after performing the activation processing procedure for the first profile, it is checked whether the PPR for the activated first profile is a specific PPR, and the PPR for the activated first profile In case of this specific PPR, the terminal characterized in that the activated profile is set as a default profile.
According to claim 4, wherein the control unit,
When the eUICC is used in another terminal before being inserted into the terminal, it is determined whether the state of the profile to which a port is not assigned is changed based on the number of ports allocated to the eUICC and information on the default profile. terminal with .

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