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Method and device for initialization between user equipment and universal … — Samsung Electronics Co., Ltd. (US12041690B2)

Samsung Electronics Co., Ltd. · Google Patents

Google Patents · Patents · License: Open Access

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ltd.samsungelectronicsco.

patent, google patents, intellectual property, US12041690B2, Samsung Electronics Co., Ltd., Sujung KANG, en, 2024

ABSTRACT

Abstract

The disclosure relates to 5G or 6G communication systems to support a higher data rate after 4G communication systems, e.g., LTE. The disclosure provides a method performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving, by a modem from an embedded universal integrated circuit card (eUICC), a first message including at least one of information related to whether eUICC functionality is supported and information related to whether multiple enabled profiles (MEPs) are supported; and determining, by the modem, to operate with an MEP function based on at least one of the received information related to whether the eUICC functionality is supported and information related to whether the MEPs are supported. Further, various embodiments of the disclosure provide a method and device for providing a dual-SIM function even in a UE equipped with a single eUICC in a wireless communication system.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on and claims priority under 35 U.S.C. Â§ 119 to Korean Patent Application No. 10-2020-0134689, filed on Oct. 16, 2020, in the Korean Intellectual Property Office, and Korean Patent Application No. 10-2021-0021441, filed on Feb. 17, 2021, in the Korean Intellectual Property Office, the disclosures of both of which are herein incorporated by reference in its entirety.

BACKGROUND

1. Field

The disclosure relates to a method and device for initialization between a UE and a universal integrated circuit card (UICC) in a wireless communication system.

2. Description of Related Art

Considering the development of wireless communication from generation to generation, the technologies have been developed mainly for services targeting humans, such as voice calls, multimedia services, and data services. Following the commercialization of 5G (5th-generation) communication systems, it is expected that the number of connected devices will exponentially grow. Increasingly, these will be connected to communication networks. Examples of connected things may include vehicles, robots, drones, home appliances, displays, smart sensors connected to various infrastructures, construction machines, and factory equipment. Mobile devices are expected to evolve in various form-factors, such as augmented reality glasses, virtual reality headsets, and hologram devices. In order to provide various services by connecting hundreds of billions of devices and things in the 6G (6th-generation) era, there have been ongoing efforts to develop improved 6G communication systems. For these reasons, 6G communication systems are referred to as beyond-5G systems.

6G communication systems, which are expected to be commercialized around 2030, will have a peak data rate of tera (1,000 giga)-level bps and a radio latency less than 100 Î¼sec, and thus will be 50 times as fast as 5G communication systems and have the 1/10 radio latency thereof.

In order to accomplish such a high data rate and an ultra-low latency, it has been considered to implement 6G communication systems in a terahertz band (for example, 95 GHz to 3 THz bands). It is expected that, due to severer path loss and atmospheric absorption in the terahertz bands than those in mmWave bands introduced in 5G, technologies capable of securing the signal transmission distance (that is, coverage) will become more crucial. It is necessary to develop, as major technologies for securing the coverage, radio frequency (RF) elements, antennas, novel waveforms having a better coverage than orthogonal frequency division multiplexing (OFDM), beamforming and massive multiple input multiple output (MIMO), full dimensional MIMO (FD-MIMO), array antennas, and multiantenna transmission technologies such as large-scale antennas. In addition, there has been ongoing discussion on new technologies for improving the coverage of terahertz-band signals, such as metamaterial-based lenses and antennas, orbital angular momentum (OAM), and reconfigurable intelligent surface (RIS).

Moreover, in order to improve the spectral efficiency and the overall network performances, the following technologies have been developed for 6G communication systems: a full-duplex technology for enabling an uplink transmission and a downlink transmission to simultaneously use the same frequency resource at the same time; a network technology for utilizing satellites, high-altitude platform stations (HAPS), and the like in an integrated manner; an improved network structure for supporting mobile base stations and the like and enabling network operation optimization and automation and the like; a dynamic spectrum sharing technology via collision avoidance based on a prediction of spectrum usage; an use of artificial intelligence (AI) in wireless communication for improvement of overall network operation by utilizing AI from a designing phase for developing 6G and internalizing end-to-end AI support functions; and a next-generation distributed computing technology for overcoming the limit of UE computing ability through reachable super-high-performance communication and computing resources (such as mobile edge computing (MEC), clouds, and the like) over the network. In addition, through designing new protocols to be used in 6G communication systems, developing mechanisms for implementing a hardware-based security environment and safe use of data, and developing technologies for maintaining privacy, attempts to strengthen the connectivity between devices, optimize the network, promote softwarization of network entities, and increase the openness of wireless communications are continuing.

It is expected that research and development of 6G communication systems in hyper-connectivity, including person to machine (P2M) as well as machine to machine (M2M), will allow the next hyper-connected experience. Particularly, it is expected that services such as truly immersive extended reality (XR), high-fidelity mobile hologram, and digital replica could be provided through 6G communication systems. In addition, services such as remote surgery for security and reliability enhancement, industrial automation, and emergency response will be provided through the 6G communication system such that the technologies could be applied in various fields such as industry, medical care, automobiles, and home appliances.

A universal integrated circuit card (UICC) is a smart card inserted and used in a user equipment (UE), e.g., a mobile communication terminal, and is also referred to as a UICC card. The UICC may include an access control module for accessing a mobile communication service provider's network. Examples of such an access control module include a universal subscriber identity module (USIM), a subscriber identity module (SIM), and an Internet protocol multimedia service identity module (ISIM).

The UICC including a USIM is typically referred to as a USIM card. Likewise, the UICC including a SIM module is typically named an SIM card. It should be noted that in the following description, a SIM card may be used to mean a typical one including a UICC card, a USIM card, or a UICC including an ISIM. In other words, the technology for SIM cards may apply likewise to USIM cards, ISIM cards, or other common UICC cards.

A SIM card stores personal information about a mobile communication service subscriber, and upon access to a mobile communication network, authenticates the subscriber, and generates a traffic security key, enabling safe use of mobile communication services.

SIM cards are manufactured as dedicated cards for a particular mobile communication service provider at his request, and the SIM cards are equipped with authentication information for access to the network of the service provider, such as a universal subscriber identity module (USIM) application and international mobile subscriber identity (IMSI), K value, and OPc value, before the SIM cards are shipped out. The SIM cards so manufactured are delivered to the mobile communication service provider and then distributed to subscribers. Applications may be managed, e.g., installed, modified, or deleted in the UICC by utilizing, e.g., over the air (OTA) technique, as required to be done so later.

The subscriber may insert the UICC card into its own mobile communication terminal to use the mobile communication service provider's network and application services. Upon exchanging mobile communication terminals, the subscriber may pull the UICC card out of the existing mobile communication terminal and put the UICC card in the new mobile communication terminal so that the authentication information, mobile communication phone numbers, and personal contact information may be used on the new mobile communication terminal.

SUMMARY

Currently, in the wireless communication system, there is considered a scheme for handling an initialization procedure between the UE and the eUICC assuming that both the UE and the eUICC may simultaneously activate only one profile. Accordingly, a need arises for a scheme for efficiently handling initialization between the UE and the eUICC considering various scenario cases in the wireless communication system.

According to an embodiment, there is provided a method and device for initialization between a UE and an eUICC so that several profiles may simultaneously be activated and used on a UE equipped with one eUICC in a wireless communication system.

According to an embodiment, there is provided a method and device that simultaneously downloads two or more communication services on a UE and simultaneously use them in a wireless communication system.

According to an embodiment, there is provided a method and device for initialization between a UE and an eUICC for determining to support activation of multiple eSIM profiles in a wireless communication system.

According to an embodiment, there is provided a method and device that transfers predetermined information for supporting multiple enabled profiles (MEPs), including the number of profile-enabled eSIM ports or their respective numbers and all or some of a maximum number of eSIM ports that may be open, from an eUICC to a UE in a wireless communication system.

According to an embodiment, there is provided a method and device that determines whether to operate as an MEP through a combination of, e.g., predetermined information about MEP support obtained by a UE from an eUICC in a wireless communication system, the number of available basebands, and radio access technology (RAT) per baseband, and determine settings, such as of the number of eSIM ports to open, the number to be assigned to the eSIM port, and the eSIM port to use issuer security domain-root (ISD-R).

According to an embodiment, there is provided a method and device that transfers information set and determined as to whether to operate with MEPs from a UE to an eUICC in a wireless communication system.

According to an embodiment, there is provided a method and device in which, in a wireless communication system, an eUICC recognizes operating with MEPs, generates an eSIM port and assigns a number, maps the eSIM port number with a profile, determines the eSIM port to be used by the ISD-R, and replies to the UE with the results of processing.

According to an embodiment, there is provided a method and device that generates as many eSIM ports as the number of eSIM ports determined by a UE in a wireless communication system and then replies to an eUICC with termination of an initialization procedure to operate with MEPs.

According to an embodiment, there is provided a method and device that closes an eSIM port connection generated by a UE and processes connection with a corresponding pSIM in a case where the user deactivates one of profiles activated in an MEP-supporting eUICC and uses the pSIM in a wireless communication system.

According to an embodiment, there is provided a method and device in which, in a wireless communication system, an eUICC recognizes an eSIM Port Close request and processes the eSIM Port Close request and then replies to a modem with the results.

Objects of the disclosure are not limited to the foregoing, and other unmentioned objects would be apparent to one of ordinary skill in the art from the following description.

According to various embodiments, a method for initialization between a UE and a universal integrated circuit card (UICC) in a wireless communication system comprises receiving, from the UICC, a first message including at least one of information related to whether an embedded UICC (eUICC) functionality is supported, a maximum number of embedded subscriber identity module (eSIM) ports supportable in an eSIM, a number and numbers of profile-enabled eSIM ports, and an identifier of whether a multiple enabled profile (MEP) is supported, determining a transmission protocol with the UICC, transmitting capability information about the UE to the UICC, and identifying to operate in an MEP function based on at least one of the received information related to whether the eUICC functionality is supported, the maximum number of the eSIM ports, the number and numbers of the profile-enabled eSIM ports, and the identifier whether the MEP is supported.

According to various embodiments, a method for initialization between a UE and a UICC in a wireless communication system comprises transmitting, to the UE, a first message including at least one of information related to whether an eUICC functionality is supported, a maximum number of eSIM ports supportable in an eSIM, a number and numbers of profile-enabled eSIM ports, and an identifier of whether an MEP is supported, determining a transmission protocol with the UE, receiving, from the UE, capability information about the UE, and receiving, from the UE, a second message disclosing operating in an MEP function.

According to various embodiments, a UE in a wireless communication system comprises a modem and a eUICC. The processor is configured to control the transceiver to receive, from a eUICC, a first message including at least one of information related to whether an eUICC functionality is supported, a maximum number of eSIM ports supportable in an eSIM, a number and numbers of profile-enabled eSIM ports, and an identifier of whether an MEP is supported, determine a transmission protocol with the eUICC, control the transceiver to transmit capability information about the UE to the UICC, and identify to operate in an MEP function based on at least one of the received information related to whether the eUICC functionality is supported, the maximum number of the eSIM ports, the number and numbers of the profile-enabled eSIM ports, and the identifier whether the MEP is supported.

According to various embodiments, a eUICC in a wireless communication system comprises a transceiver and a processor connected to the transceiver. The processor is configured to control the transceiver to transmit, to a modem, a first message including at least one of information related to whether an eUICC functionality is supported, a maximum number of eSIM ports supportable in an eSIM, a number and numbers of profile-enabled eSIM ports, and an identifier of whether an MEP is supported, determine a transmission protocol with the UE, control the transceiver to receive, from the UE, capability information about the UE, and control the transceiver to receive, from the UE, a second message disclosing operating in an MEP function.

According to various embodiments, if an operation is processed with MEP, the user may simultaneously use profiles of several carriers on a UE equipped with one eUICC. Thus, user convenience may be enhanced. For example, when traveling abroad, the user may simultaneously use the existing domestic carrier profile and the local profile with one eUICC or, in the same country, the user may use two profiles of the same carrier with one eUICC, with subscriptions separated. Further, the UE manufacturer may connect one eUICC and one physical pint with a modem (providing two or more basebands), thus providing the dual SIM function without an additional UE mounting space. Although dual SIM is mentioned herein, it should be noted that it may also be used as a triple or quadruple SIM function depending on the number of basebands available.

According to various embodiments, a method performed by a user equipment (UE) in a wireless communication system, the method comprising: receiving, by a modem from an embedded universal integrated circuit card (eUICC), a first message including at least one of information related to whether eUICC functionality is supported or information related to whether multiple enabled profiles (MEPs) are supported; and opening, by the modem, at least one embedded subscriber identification module (eSIM) port based on the at least one of the information related to whether the eUICC functionality is supported or the information related to whether the MEPs are supported.

According to various embodiments, a user equipment (UE) in a wireless communication system, comprising: an embedded univer

CROSS-REFERENCE TO RELATED APPLICATIONS

BACKGROUND

1. Field

The disclosure relates to a method and device for initialization between a UE and a universal integrated circuit card (UICC) in a wireless communication system.

2. Description of Related Art

SUMMARY

Objects of the disclosure are not limited to the foregoing, and other unmentioned objects would be apparent to one of ordinary skill in the art from the following description.

According to various embodiments, a user equipment (UE) in a wireless communication system, comprising: an embedded universal integrated circuit card (eUICC); and a modem; wherein the modem is configured to: receive, from the eUICC, a first message including at least one of information related to whether eUICC functionality is supported or information related to whether multiple enabled profiles (MEPs) are supported, and open at least one embedded subscriber identification module (eSIM) port based on the at least one of the information related to whether the eUICC functionality is supported or the information related to whether the MEPs are supported.

Further, when the UE reboots, the modem may maintain the same existing baseband-eSIM port association and, even when the user attempts to change one of the simultaneously activated profiles to a pSIM, it may process the change.

Before undertaking the DETAILED DESCRIPTION below, it may be advantageous to set forth definitions of certain words and phrases used throughout this patent document: the terms âincludeâ and âcomprise,â as well as derivatives thereof, mean inclusion without limitation; the term âor,â is inclusive, meaning and/or; the phrases âassociated withâ and âassociated therewith,â as well as derivatives thereof, may mean to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have, have a property of, or the like; and the term âcontrollerâ means any device, system or part thereof that controls at least one operation, such a device may be implemented in hardware, firmware or software, or some combination of at least two of the same. It should be noted that the functionality associated with any particular controller may be centralized or distributed, whether locally or remotely.

Moreover, various functions described below can be implemented or supported by one or more computer programs, each of which is formed from computer readable program code and embodied in a computer readable medium. The terms âapplicationâ and âprogramâ refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable computer readable program code. The phrase âcomputer readable program codeâ includes any type of computer code, including source code, object code, and executable code. The phrase âcomputer readable mediumâ includes any type of medium capable of being accessed by a computer, such as read only memory (ROM), random access memory (RAM), a hard disk drive, a compact disc (CD), a digital video disc (DVD), or any other type of memory. A ânon-transitoryâ computer readable medium excludes wired, wireless, optical, or other communication links that transport transitory electrical or other signals. A non-transitory computer readable medium includes media where data can be permanently stored and media where data can be stored and later overwritten, such as a rewritable optical disc or an erasable memory device.

Definitions for certain words and phrases are provided throughout this patent document, those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior, as well as future uses of such defined words and phrases.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete appreciation of the disclosure and many of the attendant aspects thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:

FIG. 1 is a view schematically illustrating a structure of a wireless communication system according to various embodiments of the present disclosure;

FIG. 2 is a view schematically illustrating an example (case 1) of connection between a modem and a current v2 embedded universal integrated circuit card (eUICC) not supporting a multiple enabled profile (MEP) in a wireless communication system according to various embodiments of the present disclosure;

FIG. 3 is a view schematically illustrating another example (case 2) of connection between a modem and a current v2 eUICC not supporting an MEP in a wireless communication system according to various embodiments of the present disclosure;

FIG. 4 is a view schematically illustrating an example (case 1) of connection between a modem and a v3 eUICC as the concept of a virtual interface is adopted in a wireless communication system according to various embodiments of the present disclosure;

FIG. 5 is a view schematically illustrating another example (case 2) of connection between a modem and a v3 eUICC as the concept of a virtual interface is adopted in a wireless communication system according to various embodiments of the present disclosure;

FIG. 6 is a view schematically illustrating an example of an initialization process between a UE and an eUICC in a wireless communication system according to various embodiments of the present disclosure;

FIG. 7 is a view schematically illustrating another example of an initialization process between a UE and an eUICC based on answer to reset (ATR) in a wireless communication system according to various embodiments of the present disclosure;

FIG. 8 is a view schematically illustrating another example of an initialization process between a UE and an eUICC based on UE capability information in a wireless communication system according to various embodiments of the present disclosure;

FIG. 9 is a view schematically illustrating another example of an initialization process between a UE and an eUICC based on ISD-R provision information in a wireless communication system according to various embodiments of the present disclosure;

FIG. 10 is a view schematically illustrating a connection between a modem and an eUICC for maintaining an existing setting upon rebooting in an MEP-supporting UE in a wireless communication system according to various embodiments of the present disclosure;

FIG. 11 is a view schematically illustrating operations of a UE and an eUICC when a user changes an eSIM port to a pSIM in a wireless communication system according to various embodiments of the present disclosure;

FIG. 12 is a view schematically illustrating an example of an internal structure of a UE in a wireless communication system according to various embodiments of the present disclosure;

FIG. 13 is a view schematically illustrating another example of an internal structure of a UE in a wireless communication system according to various embodiments of the present disclosure;

FIG. 14 is a view schematically illustrating another example of an initialization process between a UE and an eUICC based on an FCP template in a wireless communication system according to various embodiments of the present disclosure; and

FIG. 15 is a view schematically illustrating another example of an initialization process between a UE and an eUICC based on a new logical interface management APDU and its response in a wireless communication system according to various embodiments of the present disclosure.

DETAILED DESCRIPTION

FIGS. 1 through 15 , discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged system or device.

Hereinafter, the operational principle of the disclosure is described below with reference to the accompanying drawings. When determined to make the subject matter of the disclosure unclear, the detailed of the known functions or configurations may be skipped. The terms as used herein are defined considering the functions in the disclosure and may be replaced with other terms according to the intention or practice of the user or operator. Therefore, the terms should be defined based on the overall disclosure. For the same reasons, some elements may be exaggerated or schematically shown. The size of each element does not necessarily reflect the real size of the element. The same reference numeral is used to refer to the same element throughout the drawings. Advantages and features of the disclosure, and methods for achieving the same may be understood through the embodiments to be described below taken in conjunction with the accompanying drawings. However, the disclosure is not limited to the embodiments disclosed herein, and various changes may be made thereto. The embodiments disclosed herein are provided only to inform one of ordinary skilled in the art of the category of the disclosure. The disclosure is defined only by the appended claims. The same reference numeral denotes the same element throughout the specification. When determined to make the subject matter of the disclosure unclear, the detailed description of the known art or functions may be skipped. The terms as used herein are defined considering the functions in the disclosure and may be replaced with other terms according to the intention or practice of the user or operator. Therefore, the terms should be defined based on the overall disclosure.

Hereinafter, the base station may be an entity allocating resource to UE and may be at least one of gNode B, eNode B, Node B, base station (BS), wireless access unit, base station controller, or node over network. The UE may include UE (user equipment), MS (mobile station), cellular phone, smartphone, computer, or multimedia system capable of performing communication functions. In the disclosure, downlink (DL) refers to a wireless transmission path of signal transmitted from the base station to the UE, and uplink (UL) refers to a wireless transmission path of signal transmitted from the UE to the base station. Although LTE or LTE-A systems may be described below as an example, the embodiments may be applied to other communication systems having a similar technical background or channel pattern. For example, 5G mobile communication technology (5G, new radio, NR) developed after LTE-A may be included in systems to which embodiments of the disclosure are applicable, and 5G below may be a concept including legacy LTE, LTE-A and other similar services. Further, the embodiments may be modified in such a range as not to significantly depart from the scope of the disclosure under the determination by one of ordinary skill in the art and such modifications may be applicable to other communication systems. It should be appreciated that the blocks in each flowchart and combinations of the flowcharts may be performed by computer program instructions.

Since the computer program instructions may be equipped in a processor of a general-use computer, a special-use computer or other programmable data processing devices, the instructions executed through a processor of a computer or other programmable data processing devices generate means for performing the functions described in connection with a block(s) of each flowchart. Since the computer program instructions may be stored in a computer-available or computer-readable memory that may be oriented to a computer or other programmable data processing devices to implement a function in a specified manner, the instructions stored in the computer-available or computer-readable memory may produce a product including an instruction means for performing the functions described in connection with a block(s) in each flowchart. Since the computer program instructions may be equipped in a computer or other programmable data processing devices, instructions that generate a process executed by a computer as a series of operational steps are performed over the computer or other programmable data processing devices and operate the computer or other programmable data processing devices may provide steps for executing the functions described in connection with a block(s) in each flowchart.

Further, each block may represent a module, segment, or part of a code including one or more executable instructions for executing a specified logical function(s). Further, it should also be noted that in some replacement execution examples, the functions mentioned in the blocks may occur in different orders. For example, two blocks that are consecutively shown may be performed substantially simultaneously or in a reverse order depending on corresponding functions. As used herein, the term âunitâ means a software element or a hardware element such as a field-programmable gate array (FPGA) or an application specific integrated circuit (ASIC). A unit may play a certain role. However, the term âunitâ is not limited as meaning a software or hardware element. A âunitâ may be configured in a storage medium that may be addressed or may be configured to reproduce one or more processors. Accordingly, as an example, a âunitâ includes elements, such as software elements, object-oriented software elements, class elements, and task elements, processes, functions, attributes, procedures, subroutines, segments of program codes, drivers, firmware, microcodes, circuits, data, databases, data architectures, tables, arrays, and variables. A function provided in an element or a âunitâ may be combined with additional elements or may be split into sub elements or subunits. Further, an element or a âunitâ may be implemented to reproduce one or more CPUs in a device or a security multimedia card. According to embodiments, a â . . . unitâ may include one or more processors.

Hereinafter, the terms used herein are defined.

As used herein, the term âuniversal integrated circuit card (UICC)â means a smart card inserted and used in a mobile communication terminal, storing personal information about a mobile communication service subscriber, such as network access authentication information, phone number, or short message service (SMS), and enabling safe use of mobile communication services by authenticating the subscriber and generating a traffic security key when accessing a mobile communication network, such as a global system for mobile communication (GSM), wideband code division multiple access (WCDMA), long-term evolution (LTE), or fifth generation (5G) system. The UICC may be equipped with a communication application, such as a subscriber identification module (SIM), universal SIM (USIM), or IP multimedia SIM (ISIM), depending on the type of a mobile communication network accessed by the subscriber and may provide a high-level security function for equipping itself with various applications, such as electronic wallets, tickets, or electronic passports.

In the disclosure, the embedded UICC (eUICC) may be a security module embedded in the UE or may be of a removable type that may be inserted into and removed from the UE. The eUICC may download and install a profile using an over-the-air (OTA) technique. The eUICC may refer to a UICC capable of downloading and installing a profile.

As used herein, a method for downloading and installing a profile on the eUICC using an OTA technique may also be applicable to detachable UICCs detachably inserted into UEs as described above. For example, embodiments of the disclosure may apply to UICCs capable of downloading and installing a profile using an OTA technique.

As used herein, the term âUICCâ may be interchangeably used with the term âSIM,â and the term âeUICCâ may be interchangeably used with the term âeSIM.â UICC may be interchangeably used with physical SIM card or pSIM.

As used herein, the term âprofileâ may mean one obtained by packaging an application, file system, authentication key value or so stored in a UICC into a software form. Further, profile may be referred to as access information.

As used herein, the term âUSIM profileâ may have the same meaning as the term âprofileâ or may mean one obtained by packaging information contained in a USIM application in a profile into a software form.

In the disclosure, profile server refers to a server that may include the function of generating a profile, encrypting the generated profile, generating a profile remote management command, or encrypting the generated profile remote management command or may include the function of supporting activation of multiple profiles of the UE. Profile may also be referred to as subscription manager data preparation (SM-DP), subscription manager data preparation plus (SM-DP+), or subscription manager secure routing (SM-SR).

As used herein, the term âUEâ or âdeviceâ may also be referred to as a mobile station (MS), user equipment (UE), user terminal (UT), terminal, wireless terminal, access terminal (AT), subscriber unit, subscriber station (SS), wireless device, wireless communication device, wireless transmit/receive unit (WTRU), mobile node, or mobile or may be referred to in other terms. Various embodiments of the UE may include cellular phones, smart phones with wireless communication capabilities, personal digital assistants (PDAs) with wireless communication capabilities, wireless modems, portable computers with wireless communication capabilities, capturing/recording/shooting/filming devices, such as digital cameras, having wireless communication capabilities, game players with wireless communications capabilities, music storage and playback home appliances with wireless communications capabilities, Internet home appliances capable of wireless Internet access and browsing, or portable units or UEs incorporating combinations of those capabilities. Further, the UE may include a machine to machine (M2M) terminal and a machine-type communication (MTC) terminal/device, but is not limited thereto. In the disclosure, the UE may be referred to as an electronic device or simply as a device.

In the disclosure, the UE or device may include software or an application installed on the UE or device to control the UICC or eUICC. Further, the UE or device may include a modem and a UE framework that is a UE operating system (OS). The software or application may be referred to as, e.g., local profile assistant (LPA). As used herein, the eUICC identifier (eUICC ID) may be a unique identifier of the eUICC embedded in the UE or may also be denoted an EID.

As used herein, an application protocol data unit (APDU) may be a message for a controller in the UE or device to interwork with the eUICC. The APDU is a pair of command and response, and the APDU command and the APDU response are defined in ETSI 102.221 with reference to ISO 7816. As defined in ETSI 102.221, the APDU command has a structure of Class of Instruction (CLA), Instruction (INS), Instruction Parameter 1 (P1), and Instruction Parameter 2 (P2), as the header of the APDU, and Number of bytes in the command data field (Lc), Data, and Number of bytes expected in response of the command (Le), as the body, and the APDU response has a structure of Optional Data field, Status byte 1 (SW1), and Status byte 2 (SW2). For detailed description, refer to the ETSI 102.221 standard.

As used herein, the term âprofile packageâ may be interchangeably used with the term âprofileâ or may be used to denote a data object of a particular profile or may also be referred to as a profile TLV or profile package TLV. Profile identifier may be referred to as an ICCID as the unique identification number of the profile. A profile package encrypted using an encryption parameter may be denoted a protected profile package (PPP) or protected profile package TLV (PPP TLV). A profile package encrypted using an encryption parameter that may be decoded only by a particular eUICC may be denoted a bound profile package (BPP) or bound profile package TLV (BPP TLV). The profile package TLV may be a data set representing information constituting a profile in a tag-length-value (TLV) format.

As used herein, the AKA may denote an authentication and key agreement and may represent an authentication algorithm for accessing a 3GPP and 3GPP2 network. K is the encryption key value stored in the eUICC used for the AKA authentication algorithm and, in the disclosure, OPc is a parameter value that may be stored in the eUICC used for the AKA authentication algorithm.

As used herein, NAA may be a network access application program and may be an application program such as a USIM or ISIM stored in the UICC to access a network. NAA may be a network access module.

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

In the disclosure, eSIM port means a virtual logical interface channel obtained by multiplexing and dividing the physical interface connected with the eUICC-modem and may be interchangeably used with eSIM port, port, SIM port, logical Interface, or virtual interface.

In the disclosure, the functions of activating and managing a plurality of profiles existing in a single eUICC are collectively referred to as a multiple enabled profile (MEP) function. In conventional eUICCs, only one profile may be activated, so a single eUICC may not support the multi-SIM function. To support the multi-SIM function with a single eUICC, a function to activate and manage multiple profiles in a single eUICC is required. An eUICC in which the MEP function is implemented may be referred to as an MEP-supporting eUICC. A UE including a modem in which the MEP function is implemented and UE software capable of supporting the modem may be referred to as an MEP-supporting UE.

When determined to make the subject matter of the disclosure unclear, the detailed description of the known art or functions may be skipped.

Provided embodiments are described below with reference to the drawings.

A universal integrated circuit card (UICC) is a smart card inserted and used in a UE, e.g., a mobile communication terminal, and is also referred to as a UICC card. The UICC may include an access control module for accessing a mobile communication service provider's network. Examples of such an access control module include a universal subscriber identity module (USIM), a subscriber identity module (SIM), and an Internet protocol multimedia service identity module (ISIM).

However, the SIM card is inconvenient for the user of a mobile communication terminal to receive services from other mobile carriers. The mobile communication terminal user has the inconvenience of having to physically obtain a SIM card to receive a service from a mobile communication service provider. For example, when traveling to another country, the user inconveniently needs to get a local SIM card to receive a local mobile communication service. The roaming service addresses the inconvenience to some extent but the roaming service is expensive and may be unavailable unless there is a contract between the carriers.

Meanwhile, if a SIM module is remotely downloaded and installed on the UICC card, this inconvenience may be significantly reduced. In other words, the user may download a SIM module, for a mobile communication service he intends to use, on the UICC card at a desired time. The UICC card may download and install a plurality of SIM modules thereon and choose and use only one of the SIM modules. Such UICC card may be, or may not be, fixed to the UE. In particular, a UICC used fixed to a UE is called an embedded UICC (eUICC). Typically, the eUICC means a UICC that is used fixed to a UE and may remotely download and choose a SIM module. In the disclosure, UICC cards capable of remotely downloading and choosing a SIM module are collectively referred to as an eUICC. In other words, among UICC cards capable of remotely download and choose a SIM module, UICCs fixed or not fixed to a UE are collectively denoted an eUICC. Further, SIM module information downloaded is collectively denoted an eUICC profile.

Even when there is more than one profile in the eUICC, only one profile may be enabled at the same time. Therefore, although the UE supports two or more basebands, and two or more profiles exist in the corresponding eUICC, the UE may not support the dual SIM function, which enables two profiles to be used simultaneously on one mobile phone. This may be solved by mounting two eUICCs on the UE. However, this approach requires an additional eUICC module and a physical interface to connect the eUICC module to the baseband of the modem. Thus, the UE manufacturer is required to pay for purchasing physical pins for the additional eUICC module and the physical interface. Further, such an issue also arises as to secure a mounting space of the UE due to adoption of the module and the physical pins.

Currently, since both the UE and the eUICC processes UE-eUICC initialization under the assumption that only one profile is simultaneously activated in the eUICC, a method for determining to support multiple enabled profiles (MEPs) in the UE-eUICC initialization process and operations to be processed by the UE or eUICC according to the determination are not defined. Therefore, the disclosure addresses the issues. Further, in the case where the user deactivates one profile, which is active, in an eUICC and instead uses a physical SIM card (hereinafter, a âpSIMâ) on the eSIM UE equipped with the pSIM and the MEP-supporting eUICC, it is needed to change the UE-eUICC MEP settings. There is currently no consideration. Thus, it is intended to address such issues.

Currently, in the wireless communication system, there is considered a scheme for handling initialization between the UE and the eUICC assuming that both the UE and the eUICC may simultaneously activate only one profile. Therefore, in the initialization process between the UE and the eUICC, a method for determining to support the multiple enabled profiles (MEPs) and operations to be processed by the UE or the eUICC according to the determination are not defined. Accordingly, various embodiments provide an initialization method between a UE and an eUICC in a wireless communication system supporting MEPs.

Further, in the case where the user deactivates one profile, which is active, in an eUICC and instead uses a physical SIM card (hereinafter, a âpSIMâ) on the eSIM UE equipped with the pSIM and the MEP-supporting eUICC, it is needed to change the UE-eUICC MEP settings. However, since this is not taken into consideration for the current wireless communication systems, various embodiments provide a method for efficiently managing the MEP settings between a UE and an eUICC in a wireless communication system supporting MEPs.

FIG. 1 is a view schematically illustrating a structure of a wireless communication system according to various embodiments of the present disclosure.

A UE 1 a - 03 may include a normal app 1 a - 04 , an LPA 1 a - 05 , a UE framework 1 a - 10 , and an MEP-supporting modem 1 a - 15 . Here, the normal app 1 a - 40 is an app that has been preloaded or may be downloaded and installed on the UE, such as a carrier app or a SIM card manager app, and denotes an app that has authority of access to the profile of the pSIM 1 a - 18 or eUICC 1 a - 20 . The LPA 1 a - 05 is an app responsible for control of the eUICC and processes management for the profile while communicating with the SM- DP+ 1 a - 40 and the UE user 1 a - 01 , and the ISD- R 1 a - 35 in the eUICC 1 a - 20 . The LPA 1 a - 05 may be implemented alone or integrated into another general UE application.

The LPA 1 a - 05 may receive a remote profile management (RPM) message transferred from the user's input or the SM- DP+ 1 a - 40 and request to install/activate/deactivate/update the profile on the eUICC 1 a - 20 . The remote profile management (RPM) collectively 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+ 1 a - 40 to the UE. The RPM may be requested by the mobile network operator, the service provider, or the owner of the UE, and a command may be generated by the SM- DP+ 1 a - 40 . The LPA 1 a - 05 , which has received the user input for a request or permission for the management of the corresponding profile, may transmit a message to the eUICC 1 a - 20 according to the user input to manage/control the operation of the eUICC 1 a - 20 .

The communication modem 1 a - 15 of the UE is a device that modulates and transmits signals for information transfer and demodulates and restore the original signal at the receiving side. An MEP-supporting modem may be equipped with two or more baseband processors (hereinafter, âbasebandsâ) for wireless communication. The baseband may also be implemented logically within the modem. The modem 1 a - 15 is connected with the UICC or eUICC by one physical pin (the ISO7816 standard is applied as a smart card interface at the time of the disclosure of the disclosure) and is operated in such a manner that if the modem transmits an application protocol data unit (APDU) command through the interface, the eUICC 1 a - 20 responds with a result value. A SIM card (pSIM) occupies one baseband of the modem through one physical pin, and one pSIM has one SIM port. SIM port may be used interchangeably with SIM card slot and is defined, in GSMA TS.37, as a physical and electronic housing provided on a device to accommodate a physical SIM card. The MEP-supporting eUICC 1 a - 20 is connected with the MEP-supporting modem 1 a - 15 through one physical pin, and the profile in the eUICC occupies one baseband. Each profile communicates with the baseband connected through one eSIM port.

In this drawing, with profile 1 1 a<

CLAIMS

Claims ( 18 )

What is claimed is:

1. A method of a user equipment (UE) in a wireless communication system, the method comprising:

indicating, by an embedded universal integrated circuit card (eUICC) included in the UE, support of functionality of the eUICC and support of a plurality of logical interfaces in an answer to reset (ATR) global interface byte;

transmitting an application protocol data unit (APDU) associated with a logical interface to the eUICC; and

receiving, from the eUICC, a first response data including a maximum number of embedded subscriber identification module (eSIM) ports supported for an enabled profile in response to the APDU,

wherein a total number of eSIM ports used by the eUICC is a number of eSIM ports used for an enabled profile plus one eSIM port dedicated to an issuer security domain root (ISD-R).

2. The method of claim 1 , further comprising transmitting, by a modem to the eUICC, a first message including information for a port creation completion after opening at least one eSIM port.

3. The method of claim 2 , further comprising:

transmitting, by the modem to the eUICC, a second message indicating that the at least one eSIM port opens; and

receiving, by the modem from the eUICC, a third message including a reply to reset, wherein the third message corresponds to a logical interface through which the second message is transmitted.

4. The method of claim 1 , further comprising:

receiving, by a modem from the eUICC, information related to a multiple enabled profile (MEP) characteristic.

5. The method of claim 1 , further comprising:

transmitting, by a modem to the eUICC, capability information about the UE.

6. The method of claim 1 , further comprising:

receiving, by a modem from the eUICC, information about supported transmission protocol; and

determining, by the modem, a transmission protocol based on the information about the supported transmission protocol.

7. A user equipment (UE) in a wireless communication system, comprising:

an embedded universal integrated circuit card (eUICC) configured to indicate support of functionality of the eUICC and support of a plurality of logical interfaces in an answer to reset (ATR) global interface byte; and

a modem operably coupled to the eUICC, the modem configured to:

transmit an application protocol data unit (APDU) associated with a logical interface to the eUICC, and

receive, from the eUICC, a first response data including a maximum number of embedded subscriber identification module (eSIM) ports supported for an enabled profile in response to the APDU,

wherein a total number of eSIM ports used by the eUICC is a number of eSIM ports used for an enabled profile plus one eSIM port dedicated to an issuer security domain root (ISD-R).

8. The UE of claim 7 , wherein the modem is further configured to transmit, to the eUICC, a first message including information for a port creation completion after opening at least one eSIM port.

9. The UE of claim 8 , wherein the modem is further configured to:

transmit, to the eUICC, a second message indicating that the at least one eSIM port opens, and

receive, from the eUICC, a third message including a reply to reset, wherein the third message corresponds to a logical interface through which the second message is transmitted.

10. The UE of claim 7 , wherein the modem is further configured to receive, from the eUICC, information related to a multiple enabled profile (MEP) characteristic.

11. The UE of claim 7 , wherein the modem is further configured to transmit, to the eUICC, capability information about the UE.

12. The UE of claim 7 , wherein the modem is further configured to:

receive, from the eUICC, information about supported transmission protocol, and

determine a transmission protocol based on the information about the supported transmission protocol.

13. The method of claim 1 , further comprising:

transmitting a command associated with a logical interface to the eUICC; and

receiving, from the eUICC, a second response message including an ATR value.

14. The method of claim 13 , wherein the command comprises at least one of information related to resetting, or an indication of an eSIM port to be configured.

15. The method of claim 1 , further comprising:

opening at least one eSIM port based on the indicated support of the plurality of the logical interfaces.

16. The UE of claim 7 , wherein the modem is further configured to:

transmit a command associated with a logical interface to the eUICC; and

receive, from the eUICC, a second response message including an ATR value.

17. The UE of claim 16 , wherein the command comprises at least one of information related to resetting, or an indication of an eSIM port to be configured.

18. The UE of claim 7 , wherein the modem is further configured to open at least one eSIM port based on the indicated support of the plurality of the logical interfaces.

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