Radio frequency setting system and mobile terminal

A radio frequency (RF) setting system includes an RF recognition reader configured to recognize an external near field communication (NFC) reader, an RF update controller configured to acquire a default setting value from among a plurality of setting values stored in a memory in response to the recognition of the external NFC reader, and an RF setting value specification module configured to set the default setting value as an RF setting value. When a connection for NFC is not established to the external NFC reader within a predetermined amount of time, the RF recognition reader is further configured to recognize that the connection for NFC fails, and the RF update controller is further configured to sequentially update the RF setting value with each of the plurality of setting values excluding the default setting value until the connection for NFC is successfully established to the external NFC reader.

CROSS-REFERENCE TO RELATED APPLICATION

This non-provisional application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2017-0175079, filed on Dec. 19, 2017 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.

BACKGROUND

The present disclosure relates to a radio frequency (RF) setting system and a mobile terminal. Terminals may be generally classified as mobile/portable terminals or stationary terminals, according to their mobility. Mobile terminals may also be classified as handheld terminals or vehicle mounted terminals, according to whether or not users can directly carry them.

The functionality of mobile terminals has diversified. Mobile terminals may perform various functions such as electronic payment using near field communication (NFC).

Non-standard NFC readers having radio frequency (RF) setting values that do not meet conventional standards are widely spread. However, a connection for NFC may not be properly established between a mobile terminal and a non-standard NFC reader. Thus, a method is needed to establish a connection for NFC between a mobile terminal and a non-standard NFC reader.

SUMMARY

Embodiments of the present disclosure provide a method of establishing a connection for near field communication (NFC) between a mobile terminal and a non-standard NFC reader having a radio frequency (RF) setting value that does not meet conventional standards.

According to some embodiments of the present disclosure, a radio frequency (RF) setting system includes an RF recognition reader configured to recognize an external near field communication (NFC) reader, an RF update controller configured to acquire a default setting value from among a plurality of setting values stored in a memory in response to the recognition of the external NFC reader by the RF recognition reader, and an RF setting value specification module configured to set the default setting value as an RF setting value. When a connection for NFC is not established to the external NFC reader within a predetermined amount of time, the RF recognition reader is further configured to recognize that the connection for NFC fails, and the RF update controller is further configured to sequentially update the RF setting value with ones of the plurality of setting values excluding the default setting value until the connection for NFC is successfully established to the external NFC reader.

According to some embodiments of the present disclosure, an RF setting system includes an RF recognition reader configured to recognizing recognize an external NFC reader; an RF update controller configured to acquire a default setting value from among a plurality of setting values stored in a memory, in response to the recognition of the external NFC reader, an RF setting value specification module configured to set the default setting value as an RF setting value, and a location information verification module configured to receive current location information and configured to acquire a first setting value corresponding to the current location information from the memory. When the first setting value corresponding to the current location information is acquired from among the plurality of setting values by the location information verification module, the RF update controller is further configured to set the first setting value that was acquired, instead of the default setting value, as the RF setting value.

According to some embodiments of the present disclosure, a mobile terminal includes a communication chip configured to establish a connection for communication with an external server, a location information recognition chip configured to recognize first information, that is information regarding a current location of the mobile terminal, a memory configured to store a plurality of setting values, an RF recognition reader configured to recognize an external NFC reader, an RF update controller configured to acquire a default setting value from among the plurality of setting values in response to the recognition of the external NFC reader, and an RF setting value specification module configured to set the default setting value as an RF setting value. When a connection for NFC is not established to the external NFC reader within a predetermined amount of time, the RF recognition reader is further configured to recognize that the connection for NFC fails. The RF update controller is further configured to sequentially update the RF setting value with ones of the plurality of setting values until the connection for NFC is successfully established to the external NFC reader. When the RF recognition reader recognizes that the connection for NFC has failed in a state where a first setting value having a predetermined index value is set as the RF setting value, the RF update controller is further configured to transmit the first information and a second information, which is information regarding the external NFC reader, to the external server.

Other features and embodiments may be apparent from the following detailed description, the drawings, and the claims.

DETAILED DESCRIPTION

It is noted that aspects of the inventive concept described with respect to one embodiment, may be incorporated in a different embodiment although not specifically described relative thereto. That is, all embodiments and/or features of any embodiment can be combined in any way and/or combination. These and other objects and/or aspects of the present inventive concept are explained in detail in the specification set forth below.

The present disclosure relates to a radio frequency (RF) setting system and a mobile terminal. The present disclosure proposes setting a basic RF setting value and a non-standard RF setting value in an NFC smartphone and automatically changing the RF setting value according to the current position information of the smartphone. The NFC reader may be recognized by changing the setting function on the NFC reader, upon failure to be recognized. As described herein, the NFC reader recognition performance may be improved with additional convenience for the user. The RF automatic setting technique may include changing the NFC RF configuration automatically using smartphone location information. The NFC RF configuration may be reset or adjusted when NFC RF recognition fails. The server may be notified when NFC RF recognition fails, even when the NFC RF configuration is reset.

FIG. 1is a block diagram of a mobile terminal having a radio frequency (RF) setting system according to some embodiments of the present disclosure.

Referring toFIG. 1, a mobile terminal100may include a display unit110, a communication chip120, a location information recognition chip130, a near field communication (NFC) chip140, a memory150, and an application processor chip160. The elements illustrated inFIG. 1, however, are not all necessarily essential for realizing the mobile terminal100, and the mobile terminal100may include more or fewer elements than those illustrated inFIG. 1.

The mobile terminal100may be implemented as a smart phone, an enterprise digital assistant (EDA), a digital still camera, a digital video camera, a portable multimedia player (PMP), a personal/portable navigation device (PND), a mobile Internet device (MID), a wearable computer, an Internet of things (IOT) device, an Internet of everything (IOE) device, or an electronic book (e-book), but the present disclosure is not limited thereto. The mobile terminal100may also be implemented as a television (TV), a digital TV (DTV), an Internet protocol TV (IPTV), a personal computer (PC), a desktop computer, a laptop computer, a computer workstation, a tablet PC, and/or a video game platform (or console). As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. Expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.

The display unit110may output information processed by the mobile terminal100. For example, the display unit110may display execution screen information of an application program executed in the mobile terminal100or display user interface (UI) or graphic user interface (GUI) information corresponding to the execution screen information.

The display unit110may include at least one of a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT-LCD), an organic light-emitting diode (OLED), a flexible display, a three-dimensional (3D) display, and an electronic-ink (e-ink) display.

Two or more display units110may be provided depending on the type of the mobile terminal100. In this case, the two or more display units110may be disposed on the same side of the mobile terminal100to be either spaced apart from each other or grouped together, or may be disposed on different sides of the mobile terminal100.

The communication chip120may include one or more modules, which establish communication between the mobile terminal100and an RF communication system, between the mobile terminal100and another mobile terminal, or between the mobile terminal100and an external server. The communication chip120may also include one or more modules, which connect the mobile terminal100to one or more networks.

The communication chip120may transmit wireless signals to, or receive wireless signals from, at least one of a base station, an external terminal, and a server over a mobile communication network established in accordance with a mobile communication standard or scheme such as, for example, Global System for Mobile communication (GSM), Code Division Multi-Access (CDMA), Code Division Multi-Access2000 (CDMA2000), Enhanced Voice-Data Optimized or Enhanced Voice-Data Only (EV-DO), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), and/or Long Term Evolution-Advanced (LTE-A).

The wireless signals may include various types of data depending on whether they are for the transmission/reception of voice call signals, video call signals, text/multimedia messages, or the like.

Also, the communication chip120may be embedded in, or externally attached to, the mobile terminal100for wireless Internet access. The communication chip120may be configured to transmit wireless signals to, or receive wireless signals from, a communication network in accordance with a wireless Internet scheme.

The wireless Internet scheme may include, for example, Wireless Local Area Network (WLAN), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, Digital Living Network Alliance (DLNA), Wireless Broadband (WiBro), World Interoperability for Microwave Access (WiMAX), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), and/or Long Term Evolution-Advanced (LTE-A), and the communication chip120may transmit or receive data in accordance with at least one selected from a range of wireless Internet schemes not only including those set forth herein, but also encompassing various other wireless Internet schemes.

The location information recognition chip130is a chip for acquiring location information of the mobile terminal100(or current location information), and may include, for example, a Global Positioning System (GPS) chip or a Wi-Fi chip.

In one example, in a case where the mobile terminal100uses a GPS chip, the location information of the mobile terminal100may be acquired using signals transmitted by a GPS satellite.

In another example, in a case where the mobile terminal100uses a Wi-Fi chip, the location information of the mobile terminal100may be acquired based on information of a wireless access point (AP) that transmits wireless signals to, or receives wireless signals from, the Wi-Fi chip.

The location information recognition chip130, which is a chip for acquiring the location information of the mobile terminal100(or the current location information), is not particularly limited to a chip that directly calculates or acquires the location information of the mobile terminal100.

The NFC chip140, which is a chip for NFC, may support NFC. The NFC chip140may support wireless communication between the mobile terminal100and a wireless communication system and between the mobile terminal100and another mobile terminal (for example, an NFC reader) using a WLAN.

In some embodiments, the NFC chip140may be included in or operate in conjunction with the communication chip120.

The memory150may store data for supporting various functions of the mobile terminal100. The memory150may store application programs (or applications) executed in the mobile terminal100and/or data and/or instructions for operating the mobile terminal100. At least some of the application programs may be downloaded from an external server via wireless communication. At least some of the application programs may be installed in the mobile terminal100at the time of manufacturing or shipping, which is typically the case for the basic functions of the mobile terminal100(for example, the functions of receiving calls, placing calls, receiving messages, sending messages, and the like). The application programs may be stored in the memory150, may be installed in the mobile terminal100, and may be executed by the application processor chip160to perform an operation (or function) of the mobile terminal100.

The application processor chip160may be configured to control overall operations of the mobile terminal100. The application processor chip160may perform various operations executed in the mobile terminal100and/or may process data. The application processor chip160may drive an operating system (OS), an application, and/or a database manager for operating the mobile terminal100.

The application processor chip160may include an RF setting system200. The RF setting system200may be implemented as hardware and/or as software or a combination thereof. The RF setting system200will hereinafter be described with reference toFIG. 2.

FIG. 2is a block diagram of an RF setting system according to some embodiments of the present disclosure.

Referring toFIG. 2, an RF setting system200may include an NFC service processor210, an NFC protocol processor220, and an NFC controller230. The elements illustrated inFIG. 2, however, are not all necessarily essential for realizing the RF setting system200, and the RF setting system200may include more or fewer elements than those illustrated inFIG. 2.

The NFC service processor210may update an RF setting value. The NFC service processor210may include an RF update controller211and a location information verification module212.

The location information verification module212may receive current location information from the location information recognition chip130periodically (for example, every five seconds). The location information verification module212may search for a setting value corresponding to the current location information from the memory150. The memory150may store location information of a non-standard NFC reader and information regarding a setting value of the non-standard NFC reader. The non-standard NFC reader may refer to an NFC reader using an RF setting value that does not meet a given standard.

In some embodiments, the RF update controller211may receive a setting value from the location information verification module212. The RF update controller211may send a request to the NFC protocol processor220to update an RF setting value based on the received setting value.

In some other embodiments, if communication with an NFC reader at a particular location fails with a default setting value set as an RF setting value, the RF update controller211may reattempt NFC by updating the RF setting value. Then, if a connection for NFC is successfully established using the updated RF setting value, the RF update controller211may store the updated RF setting value in the memory150by mapping it with location information of the NFC reader.

The NFC protocol processor220may transmit an RF setting value to the NFC chip controller230or may determine whether a connection for NFC has been successfully established.

The NFC protocol processor220may include an RF recognition reader221and an RF setting value specification module222.

The RF setting value specification module222may transmit the RF setting value updated in accordance with a request from the RF update controller211to the NFC chip controller230.

The RF recognition reader221may determine whether NFC has been successfully established and may transmit the result of the determination to the RF update controller211. Also, the RF recognition reader221may recognize an external NFC reader.

The NFC chip controller230may control an NFC chip using a setting value transmitted by the RF setting value specification module222.

FIG. 3is a flowchart illustrating a method of establishing a connection for NFC using an RF setting system according to some embodiments of the present disclosure.

Referring toFIG. 3, an RF recognition reader221ofFIG. 2may recognize an external NFC reader (S310).

For example, the RF recognition reader221ofFIG. 2may recognize that the external NFC reader is located nearby if a signal emitted from the external NFC reader is detected by the RF recognition reader221ofFIG. 2.

Once the external NFC reader is detected, an RF update controller211ofFIG. 2may acquire a default setting value from a memory.

The RF update controller211ofFIG. 2may transmit the default setting value to an RF setting value specification module222. The RF setting value specification module222may set an RF setting value using the default setting value. An NFC chip controller230ofFIG. 2may perform NFC with the set RF setting value by controlling an NFC chip (S320).

Thereafter, the RF recognition reader221ofFIG. 2may determine whether a connection for NFC has failed (S330).

If a determination is made that a connection for NFC has been established to the external NFC reader within a predefined amount of time (S330, N), the RF recognition reader221ofFIG. 2may perform a function such as electronic payment with the external NFC reader.

On the other hand, if a determination is made that a connection for NFC has not been established to the external NFC reader within the predefined amount of time, the RF recognition reader221ofFIG. 2may recognize that a connection for NFC has failed.

If the RF recognition reader221recognizes that a connection for NFC has failed (S330, Y), the RF update controller211may update the RF setting value (S340).

For example, the memory150may store a plurality of setting values. Each of the plurality of setting values may have an index value. The RF update controller211may update the RF setting value with a setting value corresponding to an index value of 1, for example various index values may be used of subsequent iterations.

The RF setting value specification module222may set the updated RF setting value as a new RF setting value. The NFC chip controller230may perform NFC, with the RF setting value updated in S340, by controlling the NFC chip (S350).

Thereafter, the RF recognition reader221ofFIG. 2may determine whether a connection for NFC has failed (S360).

If a determination is made that a connection for NFC has not been established to the external NFC reader within the predefined amount of time, the RF recognition reader221ofFIG. 2may recognize that a connection for NFC has failed (S360, Y).

Then, the method returns to S340so that the RF setting value may be updated again.

The RF update controller211ofFIG. 2may continue to sequentially update the RF setting value with each of the plurality of setting values stored in the memory150ofFIG. 1until a connection for NFC is successfully established to the external NFC reader.

For example, the RF update controller211ofFIG. 2may update the RF setting value with a setting value corresponding to an index value of 2 from among the plurality of setting values stored in the memory150ofFIG. 1.

In some embodiments, the RF update controller211ofFIG. 2may prevent the RF setting value from being updated any longer once the RF setting value is updated with a first setting value corresponding to a predetermined index value. The predetermined index value may be an index value to which the last one of the plurality of setting values stored in the memory150is mapped. It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, elements should not be limited by these terms; rather, these terms are only used to distinguish one element from another element. Thus, a first element discussed below could be termed a second element without departing from the scope of the present inventive concepts.

According to the embodiment ofFIG. 3, if a connection for NFC fails, a mobile terminal100may establish a connection for NFC by automatically changing an RF setting value.

FIG. 4is a flowchart illustrating a method of establishing a connection for NFC using an RF setting system, according to some embodiments of the present disclosure.

Referring toFIG. 4, if a user activates an NFC function of the mobile terminal100ofFIG. 1, the RF update controller211, which is included in the NFC service processor210, may acquire a default setting value R1from among a plurality of RF setting values stored in the memory150. The RF update controller211may transmit the default setting value R1to the NFC protocol processor220.

The RF setting value specification module222, which is included in the NFC protocol processor220, may set the default setting value R1as an RF setting value (S410).

Specifically, the RF setting value specification module222may transmit the default setting value R1to the NFC chip controller230(S410). The NFC chip controller230may set the default setting value R1as the RF setting value.

The RF recognition reader221may determine whether a connection for NFC has been established to an NFC reader within a predetermined amount of time.

If a determination is made that a connection for NFC has not been established to the NFC reader within the predetermined amount of time, the RF recognition reader221may recognize that a connection for NFC with the NFC reader has failed (S420). In this case, the NFC protocol processor220may transmit a signal indicating that a connection for NFC with the NFC reader has failed to the NFC service processor210.

The display unit110, which is included in the mobile terminal100, may display a precision setting confirmation dialogue (S430).

The mobile terminal100may receive an execution command for precision setting through the precision setting confirmation dialogue. For example, if the user manipulates a User Interface (UI) to instruct that a precision setting mode be executed, the mobile terminal100may recognize that an execution command for RF precision setting has been received.

If the mobile terminal100recognizes that an execution command for precision setting has been received, the RF service processor210may update the RF setting value via the RF update controller211(S440).

For example, the RF update controller211may update the RF setting value with a setting value R2corresponding to a first index value from among the plurality of setting values stored in the memory150. Then, the RF update controller211may transmit the setting value R2to the NFC protocol processor220.

The RF setting value specification module222may update the RF setting value with the setting value R2transmitted by the RF update controller211(S450).

Specifically, the RF setting value specification module222may transmit the setting value R2to the NFC chip controller230. The NFC chip controller230may update the RF setting value with the setting value R2.

FIG. 5is a flowchart illustrating a method of establishing a connection for NFC using an RF setting system according to some embodiments of the present disclosure.FIG. 6is a table showing RF setting values stored in a memory in accordance with some embodiments of the present disclosure.

Referring toFIG. 5, the location information verification module212may search a setting value corresponding to the current location of the mobile terminal100from the memory150ofFIG. 1, particularly, from among a plurality of setting values stored in the memory150(S510).

In some embodiments, if the user activates the NFC function of the mobile terminal100, the location information verification module212may search for the setting value corresponding to the current location of the mobile terminal100from the memory150.

In some other embodiments, an attempt may be made to establish a connection for NFC in a state where a default setting value is set as the RF setting value, and the location information verification module212may search for the setting value corresponding to the current location of the mobile terminal100from the memory150, only if the attempt fails.

Referring toFIG. 6, a plurality of setting values may be stored in the memory150ofFIG. 1. Each of the plurality of setting values may have an index value. Each of the plurality of setting values may also have location information mapped thereto. The location information may be location information of each NFC reader having a non-standard setting value.

In one example, a first setting value corresponding to an index value of 1 may be stored in the memory150by being mapped with a first location.

In another example, a second setting value corresponding to an index value of 2 may be stored in the memory150by being mapped with second and third locations. In other words, a setting value may be associated with one or more locations.

In yet another example, a third setting value corresponding to an index value of 3 may be stored in the memory150without being mapped with any location information. In other words, if an index value is not mapped to any locations, that particular index value may not be of use in establishing NFC communication.

If the current location of the mobile terminal100is the first location, the location information verification module212may acquire the first setting value, which has the index value of 1, from among the plurality of setting values stored in the memory150as a setting value corresponding to the current location of the mobile terminal100.

Referring again toFIG. 5, once the setting value corresponding to the current location of the mobile terminal100is acquired by the location information verification module212, the RF update controller211may update an RF setting value with the acquired setting value (S520). Then, the RF update controller211may transmit the updated setting value, i.e., a setting value R2, to the RF setting value specification module222.

The RF setting value specification module222may set the updated setting value as the RF setting value (S530). The NFC chip controller230may receive the RF setting value from the RF setting value specification module222and may establish a connection for NFC.

The RF recognition reader221may determine whether a connection for NFC has failed. If the RF recognition reader221recognizes that a connection for NFC has failed (S540), the RF recognition reader221may transmit a signal or message indicating that a connection for NFC has failed to the RF update controller211.

The display unit110, which is included in the mobile terminal100, may display a precision setting confirmation dialogue (S550).

The mobile terminal100may receive an execution command for precision setting through the precision setting confirmation dialog. For example, if the user manipulates a UI to instruct that a precision setting mode be executed, the mobile terminal100may recognize that an execution command or message for RF precision setting has been received.

If the mobile terminal100recognizes that an execution command or message for precision setting has been received, the RF setting value may be updated via the RF update controller211(S560).

For example, the RF update controller211may update the RF setting value with a setting value R3having a second index value from among the plurality of setting values stored in the memory150. Then, the RF update controller211may transmit the setting value R3to the NFC protocol processor220.

The RF setting value specification module222may update the RF setting value with the setting value R3transmitted by the RF update controller211.

The RF recognition reader221may determine whether a connection for NFC has failed. If the RF recognition reader221recognizes that a connection for NFC has been successfully established (S570), the RF recognition reader221may transmit a signal indicating that a connection for NFC has been successfully established to the NFC service processor210.

The location information verification module212may store the setting value R3in the memory150by mapping the setting value R3with the current location of the mobile terminal100(S580).

S550, S560, S570, and S580have been described above as being performed only if a connection for NFC fails in S540. However, S550, S560, S570, and S580may also be performed if the setting value corresponding to the current location of the mobile terminal100is not stored in the memory150or to improve the integrity of an NFC link such as to improve the error rate in NFC communications.

For example, if the setting value corresponding to the current location of the mobile terminal100is not stored in the memory150, the RF update controller211may continue to sequentially update the RF setting value with each of the plurality of setting values stored in the memory150until a connection for NFC is successfully established. Then, if a connection for NFC is successfully established when a third setting value is set as the RF setting value, the RF update controller211may maintain the RF setting value and may store the third setting value in the memory150by mapping the third setting value with the current location of the mobile terminal100. If a change of the current location of the mobile terminal100is recognized, the RF update controller211may set the default setting value, instead of the third setting value, as the RF setting value, or the location information verification module212may search for the setting value corresponding the changed current location of the mobile terminal from the memory150.

The RF update controller211may prevent the RF setting value from being updated any longer once the RF setting value is updated with a first setting value corresponding to a predetermined index value. The predetermined index value may be an index value to which the last one of the plurality of setting values stored in the memory150is mapped.

FIG. 7is a flowchart illustrating a method of updating an RF setting value in an RF setting system according to some embodiments of the present disclosure.

Referring toFIG. 7, the location information verification module212, which is included in the NFC service processor210, may determine whether the mobile terminal100is currently away from the location of a non-standard NFC reader (S610).

For example, the location information verification module212may recognize the current location of the mobile terminal100at intervals of a predetermined amount of time (for example, five seconds). The location information verification module212may recognize that the current location of the mobile terminal100no longer corresponds to location information mapped with each setting value stored in the memory150. In this case, the location information verification module212may recognize that the mobile terminal100is currently away from the non-standard NFC reader.

If the location information verification module212recognizes in S610that the mobile terminal100is currently away from the non-standard NFC reader, the RF update controller211may search for and/or find a default setting value R1from the memory150and may transmit the default setting value R1to the RF protocol processor220. The RF setting value specification module212may set the default setting value R1as an RF setting value (S620).

That is, when the mobile terminal100is currently away from the non-standard NFC reader, the RF setting value may be automatically updated with the default setting value R1.

FIG. 8is a flowchart illustrating a method of updating an RF setting value in an RF setting system according to some embodiments of the present disclosure.

A location information recognition chip130ofFIG. 1may recognize first information, which is information regarding the current location of a mobile terminal100ofFIG. 1. A communication chip120may establish a connection for communication to an external server.

A memory150may include a plurality of setting values. Each of the plurality of setting values may have an index value. Each of the plurality of setting values may have location information mapped thereto, but the present disclosure is not limited thereto. In some embodiments, there may exist setting values that do not have location information mapped thereto.

An RF recognition reader221may recognize an external NFC reader. Once the external NFC reader is recognized, an RF update controller211may acquire a default setting value from among the plurality of setting values. An RF setting value specification module may set the default setting value as an RF setting value.

If a determination is made that a connection for NFC has not been established to the external NFC reader within a predetermined amount of time or a threshold time that may be configured, the RF recognition reader221may recognize that a connection for NFC has failed.

Then, referring toFIG. 8, if the RF recognition reader221recognizes that a connection for NFC has failed, a display unit110may display whether to perform RF precision setting via a UI. If a user authorizes, via the UI, at RF precision setting is to be performed (S710), the RF setting value may be updated.

Specifically, the mobile terminal100may determine whether a current setting value currently set as the RF setting value corresponds to a predetermined index value (for example, M) (S720). The predetermined index value may be an index value to which the last one of the plurality of setting values stored in the memory150is mapped.

If the current setting value does not correspond to the predetermined index value (S720, N), the RF setting value may be updated via the RF update controller211. Thereafter, the mobile terminal100may determine, via the RF recognition reader221, whether a connection for NFC has been successfully established (S750).

If the mobile terminal100recognizes that a connection for NFC has failed (S750, Y), flow returns to S720so that S720, S730, S740, and S750may be performed again. In this case, the mobile terminal100may continue to sequentially update the RF setting value until the RF setting value is updated with a setting value having the predetermined index value.

The mobile terminal100may receive a command as to whether to allow the transmission of the first information and/or second information, which is information regarding the external NFC reader (S770).

If a command to not allow the transmission of the first information and/or the second information is received via the customer support window (S770, N), the mobile terminal100may not establish a connection for NFC.

On the other hand, if a command to allow the transmission of the first information and/or the second information is received via the customer support window (S770, Y), the mobile terminal100may transmit the first information and/or the second information to the external server via the communication chip120(S780).

Thereafter, the mobile terminal100may receive a setting value corresponding to the first information and the second information from the external server via the communication chip120(S790). In this case, the memory150may store the received setting value by mapping it with the first information. Then, the RF update controller211may update the RF setting value with the received setting value if current location is the location corresponding the first information.