KR101407272B1 - Smart card, mobile communication terminal using the same and method for channel setting thereof - Google Patents

Abstract

A mobile communication terminal capable of efficiently operating a channel resource of a smart card and a channel setting method thereof are provided. The mobile communication terminal includes a terminal body unit for receiving a channel setting request and performing a data communication process through the assigned channel and then generating a channel release request, And a smart card unit for releasing the allocated channel in response to the channel release request, releasing the first set channel among a plurality of channels provided when the channel resource is insufficient, and allocating a newly released channel. A method of setting a channel of a mobile communication terminal, the method comprising: allocating a channel in response to a smart card additional channel setting request, releasing a first set channel among a plurality of channels that can be provided when channel resources are insufficient, A data communication process is performed over the assigned channel, a smart card portion receives the channel release request, and the smart card releases the allocated channel corresponding to the channel release request.

Mobile communication terminal, smart card, channel resource

Description

Technical Field [0001] The present invention relates to a smart card, a mobile communication terminal equipped with the smart card,

The present invention relates to a smart card, a mobile communication terminal equipped with the smart card, and a channel setting method thereof. More particularly, the present invention relates to a smart card, an application applet A mobile communication terminal equipped with the smart card, and a channel setting method thereof.

The mobile communication terminal is a type of a combination of a smart card and a mobile communication terminal such as a SIM (Subscriber Identity Module), a UIM (User Identity Module), and a USIM (Universal Subscriber Identity Module) Has been developed as a third-generation service.

As described above, a smart card such as a SIM, a UIM, and a USIM is a module for storing personal information of a user of the mobile communication terminal (such as a communication provider, a user password, roaming information, and a user's personal phone number) , Which makes it possible to utilize mobile phones and e-commerce services including international roaming regardless of the type of terminal or communication service provider.

In addition, the smart card can protect personal information when the mobile communication terminal is lost or replaced due to a strong security function, and the payment and authentication function requiring security is provided, wide.

As an example of a smart card that can be installed in a mobile communication terminal, a USIM card will be described as follows.

The USIM card is a type of smart card that can store and process data and information used in WCDMA terminals. A smart card is a chip on board (COB) card that has a built-in microprocessor, memory, card operating system, and security algorithm, and is called a Universal Integrated Circuit Card (UICC) .

The user can separate the smart card from the main body of the mobile communication terminal and insert it into the other mobile communication terminal so that the conventional service can be provided using the new mobile communication terminal without a separate subscription procedure.

Since the smart card is portable and easy to move, the available channel resources are very limited compared to other devices. Therefore, in the process of performing data communication with the mobile communication terminal or the external card reader, There is a problem that it is difficult.

In addition, when a specific service (for example, payment / payment service) is to be used by using the mobile communication terminal, an applet for providing a service on a smart card is implemented. It can cause an applet error.

SUMMARY OF THE INVENTION Accordingly, the present invention provides a smart card, a mobile communication terminal, and a channel setting method for efficiently operating channel resources.

Another object of the present invention is to provide a smart card, a mobile communication terminal equipped with the smart card, and a channel setting method thereof, which can ensure correct operation of an application applet constructed on a smart card through channel resource reservation.

The technical objects to be achieved by the present invention are not limited to the technical matters mentioned above, and other technical subjects which are not mentioned can be clearly understood by those skilled in the art from the following description. There will be.

According to an aspect of the present invention, there is provided a mobile communication terminal including a channel establishment request, a channel allocation request according to the channel establishment request, a data communication process through the allocated channel, A terminal body unit for generating a channel release request for releasing the allocated channel; And allocating a channel in response to the channel setting request, releasing the allocated channel in response to the channel release request, releasing the first channel among a plurality of channels provided when the channel resource is insufficient, And a smart card unit for allocating a new channel.

A mobile communication terminal according to another aspect of the present invention generates a channel setting request, allocates a channel according to the channel setting request, performs a data communication process through the allocated channel, A terminal body unit for generating a channel release request for releasing a channel; And allocating a channel in response to the channel setting request, releasing the allocated channel in response to the channel release request, updating a time stamp for a plurality of channels provided at each data exchange time, And a smart card unit for selecting a channel to be released based on the time stamps for the plurality of channels, and releasing the selected channel and assigning the selected channel to a new one.

According to an aspect of the present invention, there is provided a smart card including: a channel information database storing a set time each time a channel is allocated; An interface unit for receiving a channel setting request and a channel release request from outside; A channel management unit for checking whether there is an assignable channel among a plurality of channels in response to the channel setting request; A first channel assignment unit for assigning a channel according to the channel setting request when the channel management unit determines that there is an assignable channel; And when the channel management unit determines that there is no channel allocable due to lack of channel resources, it searches the channel information database to release the first channel among the plurality of channels, And a second channel allocation unit.

According to another aspect of the present invention, there is provided a smart card including: a channel information database for updating a time stamp for each of a plurality of channels that can be provided at the time of data exchange; An interface unit for receiving a channel setting request and a channel release request from outside; A channel manager for checking whether there is an assignable channel among the plurality of channels in response to the channel setting request; A first channel assignment unit for assigning a channel according to the channel setting request when the channel management unit determines that there is an assignable channel; And when the channel management unit determines that there is no channel that can be allocated due to lack of channel resources, it searches the channel information database to release a channel having the longest data exchange time among the plurality of channels, And a second channel assigning unit for assigning the released channel.

In the smart card according to one aspect and another aspect of the present invention, the interface unit may be a contactless interface unit for performing wireless data communication with an external device, or a contact interface unit physically directly connected to an external device.

According to another aspect of the present invention, there is provided a method of setting a channel of a mobile communication terminal, the method comprising: allocating a channel in response to a request for setting a channel of a smart card; releasing a first channel among a plurality of channels, Assigning the released channel to a new channel; Performing a data communication process over the assigned channel; Receiving the smart card supplemental channel release request upon completion of the data communication process; And releasing the assigned channel corresponding to the channel release request by the smart card.

According to another aspect of the present invention, there is provided a method of setting a channel of a mobile communication terminal, the method comprising: allocating a channel in response to a smart card attachment channel setting request, Releasing the selected channel and assigning it to the new channel; Performing a data communication process over the assigned channel; Receiving the smart card supplemental channel release request upon completion of the data communication process; And releasing the assigned channel corresponding to the channel release request by the smart card.

The smart card according to the present invention, the mobile communication terminal equipped with the smart card, and the channel setting method according to the present invention can efficiently operate the channel resource and can prevent the application applet Operation can be ensured.

Hereinafter, a mobile communication terminal equipped with a smart card according to preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5 attached hereto.

1 is a configuration diagram of a mobile communication terminal according to an embodiment of the present invention.

Referring to FIG. 1, a mobile communication terminal according to an embodiment of the present invention includes a terminal body 100 and a smart card unit 200. The smart card unit 200 performs a data communication process through a logical channel formed between the terminal body unit 100 and the external card reader 300.

First, the detailed configuration of the terminal main body 100 will be described below.

The terminal body unit 100 includes four layers: a terminal software layer 110, a HAL (Handset Application Layer) 120, a terminal / service platform 130, and an application program layer 140.

The terminal software layer 110 includes a simple terminal operating system, a communication basic function, a mobile communication service such as a processor or a modem, and various device drivers for controlling various devices for a wireless Internet service. Do. Windows CE of Microsoft Corporation and Symbian of Symbian Inc. are used as terminal operating systems. In particular, in the terminal software layer 110, a smart card driver 111 for operating the smart card unit 200 is constructed.

The HAL 120 is a layer that interfaces with the terminal software layer 110 and the terminal / service platform 130 and is responsible for porting to the terminal. The HAL 120 accommodates various types of terminal operating systems, thereby supporting hardware independence in platform portability. The terminal is abstraction through the HAL 120, and the platform is configured in hardware independent manner.

The terminal / service platform 130 includes a terminal platform corresponding to a standard that standardizes the application execution environment of the mobile communication terminal and a service platform (not shown) installed on the terminal platform to provide a specific service (E. G., A financial services platform).

Wireless Internet Platform for Interoperability (WIPI), Binary Runtime Environment for Wireless (BREW), and Kilobyte Virtual Machine (KMV) may be applied to the terminal platform for operating the mobile communication terminal.

Since the WIPI platform is independent and open to the terminal and content development, the developer can follow the WIPI standard specification in order to create an application that operates in common regardless of the type of mobile communication terminal.

The application layer 140 is a layer in which various applications generated by a developer such as a sound player, a map viewer, and a game are implemented, and each application is executed by the operation of the mobile communication terminal . In particular, the application layer 140 includes an application 141 for providing a specific service (e.g., payment / settlement service) by performing a data communication process with the smart card unit 200 Application).

The terminal body unit 100 is equipped with a smart card unit 200 for storing personal information of a user of the mobile communication terminal for the purpose of user authentication. The developer can install the applet 230 in the smart card unit 200 to provide a specific service (e.g., payment / settlement service, traffic card service, etc.). The application 141 of the terminal body unit 100 or the external card reader 300 selects the applet 230 in the smart card unit 200 through the contact / noncontact interface to provide a desired service. At this time, data communication is performed through a logical channel provided by the smart card unit 200.

The card reader 300 reads out the smart card unit 200 by performing a data communication process with the smart card unit 200 when there is a request from an internal application (not shown) like the terminal main body unit 100, (For example, payment / settlement service) using the received data.

The type of the smart card unit 200 may vary depending on the type of the terminal platform. For example, when the terminal platform is the WIPI standard, the smart card unit 200 can be constructed with a USIM card.

The smart card unit 200 is connected to the application 141 of the terminal main body 100 and the card reader 300 through the contact / contact interface so that the applet 230 in the smart card unit 200 can communicate with the application 141 (N is an arbitrary natural number) channels at the same time.

The terminal body unit 100 and the card reader 300 generate a channel setting request for securing channel resources in the data communication process and transmit the generated channel setting request to the smart card unit 200 and receive a corresponding channel. After completing the data communication process with the smart card unit 200 through the allocated channel, a channel release request for releasing the allocated channel is generated and transmitted to the smart card unit 200 . After receiving the channel release request, the smart card unit 200 acquires channel resources by terminating and releasing the established channel.

In this process, if an error occurs before the channel release request is transmitted and the channel is not terminated, the smart card unit 200 keeps the channel. If these errors are accumulated and the channels are not released, the smart card unit 200 can no longer allocate a new channel, and the card becomes unusable.

That is, the application 141 of the terminal body unit 100 or the card reader 300 selects the applet 230 in the smart card unit 200 to exchange data, and then terminates the channel resource used for data communication And releases the channel resource set between the application 141 and the applet 230. If the communication between the application 141 and the applet 230 abnormally ends or the channel is selected by the external device approaching with impure intent and the closing operation is not performed, The resource may not be released and may be occupied.

In this case, in order to correct the abnormal termination of the communication in the smart card unit 200, the channel resource is returned assuming an abnormal termination of some channels, and a new channel can be allocated.

The operation of the smart card unit 200 will now be described in more detail.

The smart card unit 200 allocates a channel in response to a channel setting request transmitted from the terminal body unit 100 or the card reader 300 and releases the allocated channel in response to the channel release request after the data communication process is completed do.

When allocating a channel in response to a channel setting request, the smart card unit 200 detects abnormal termination of a previous data communication process and allocates a channel according to the detection result. More specifically, when the channel resource is insufficient, the smart card unit 200 regards the first channel among the plurality of channels that it can provide as an abnormally terminated channel, releases the channel, A new assignment is made for the request.

In this manner, the smart card unit 200 is allocated to the application and is not properly terminated, thereby detecting a state occupying unnecessary occupation of the channel resource, thereby preventing a situation where the channel resource becomes insufficient, Can be guaranteed.

FIG. 2 is a detailed configuration diagram of a smart card unit according to an embodiment of the present invention, and FIG. 3 is a diagram illustrating a data structure stored in the channel information database of FIG.

2, the smart card unit 200 includes interface units 211_1 and 211_2, a channel management unit 212, a first channel allocation unit 213, A second channel allocation unit 214, and a channel information database 215. [

The interface units 211_1 and 211_2 receive a channel setting request and a channel release request transmitted from the terminal body unit 100 or the card reader 300. [ The interface units 211_1 and 211_2 may be a contactless interface unit 211_2 for performing wireless data communication with an external card reader 300. The interface units 211_1 and 211_2 may be physically connected to the terminal body unit 100, May be a contact type interface unit 211_1.

In response to the channel setting request, the channel management unit 212 checks whether or not there is an assignable channel among a plurality of channels provided by the smart card unit 200. [

The first channel assignment unit 213 assigns a channel according to a channel setting request when there is an assignable channel as a result of the examination by the channel management unit 212. [

If it is determined that there is no channel allocable due to lack of channel resources, the second channel allocating unit 214 allocates the channel that is abnormally terminated And newly allocates the released channel in accordance with the channel setting request.

Specifically, if the channel resources are all occupied and there is no assignable channel, the second channel assigning unit 214 searches the channel information database 215 to find the first set channel among the plurality of channels, that is, Examines the channel, releases it by determining that the channel is abnormally terminated in the previous data communication process. Then, the newly allocated channel is allocated as a channel for the received channel setting request.

The channel information database 215 stores a time at which the channel is set each time a new channel setting request is received from the terminal body unit 100 or the card reader 300 and the channel is set. The data stored in the channel information database 215 may be configured as shown in FIG.

The configuration of the channel information database 215 and the channel management standard of the smart card unit 200 will be described with reference to FIG. 3 as follows.

The channel information database 215 stores a channel number of logical channels that the smart card unit 200 can provide, a status indicating whether each channel is enabled / disabled, a device number of a device (or application) Each channel includes the set time.

The smart card unit 200 supports a maximum of four logical channels, and the channel 0 is used for communication functions from the time of terminal boot to the time of termination. The channel 0 is activated every time the terminal is booted and continues to be maintained until the terminal is terminated. The channel 0 is always used by applications in the smart card unit 200. Therefore, when the smart card unit 200 is to be read or terminated by the application 141 of the terminal body unit 100 or the card reader 300 in connection with the service of a specific purpose such as finance, 200, the logical channels 1, 2, and 3 should be allocated / released instead of activating / deactivating the logical channels.

When the channel resource for the channel setting request is insufficient, the smart card unit 200 searches the channel information database 215 to confirm the set time of each channel, and determines the set time of the first channel Releases the previously set channel and allocates it. In the case of FIG. 3, since the application of the smart card unit 200 itself uses the channel 0, and the channel 1 is set to be the oldest compared to the channels 2 and 3, It is released and newly allocated.

FIG. 4 is a detailed configuration diagram of a smart card unit according to another embodiment of the present invention, and FIG. 5 is a diagram illustrating a data structure stored in the channel information database of FIG.

4, a smart card unit 200 according to another embodiment of the present invention includes interface units 221_1 and 221_2, a channel management unit 222, a first channel allocation unit 223, a second channel allocation unit 224, and a channel information database 225.

The smart card unit 200 allocates a channel in response to a channel setting request sent from the application 141 and releases the allocated channel in response to a channel release request sent after the completion of the data communication process.

Here, the smart card unit 200 according to another embodiment of the present invention updates a time stamp for a plurality of channels at each data exchange time, and when a channel resource is insufficient, Selects a channel to be released, and releases the selected channel and allocates a new channel.

The channel information database 225 updates and stores a time stamp for each of a plurality of channels that can be provided by the smart card unit 200 at each data exchange time.

The data stored in the channel information database 225 may be configured as shown in FIG.

The interface units 221_1 and 221_2 receive a channel setting request and a channel release request from an external application 141. [ The interface units 221_1 and 221_2 may be a contactless interface unit 221_2 for performing wireless data communication with an external card reader 300 or may be physically connected to the terminal body unit 100 May be a contact type interface unit 221_1.

In response to the received channel setting request, the channel management unit 222 checks whether there is an assignable channel among a plurality of channels provided by the smart card unit 200. [

The first channel assigning unit 223 assigns a channel according to a channel setting request when there is an assignable channel as a result of the examination by the channel managing unit 222. [

The second channel allocator 224 searches the channel information database 225 to determine if there is a channel that can be allocated due to lack of channel resources as a result of the channel manager 222, And newly allocates the released channel in accordance with the channel setting request.

The terminal main body unit 100 or the external card reader 300 generates a channel setting request for the data communication process and transmits the channel setting request to the smart card unit 200 as in the case of the embodiment, . Then, after performing the data communication process through the allocated channel, a channel release request for releasing the allocated channel is generated.

5, the channel information database 225 stores a channel number of logical channels that the smart card unit 200 can provide, a status indicating whether to activate / deactivate each channel, Application), a setting time set for each channel, a time stamp indicating the data exchange time of each channel, and the like are stored.

In FIG. 5, the smart card unit 200 supports up to four logical channels, and the 0th channel is activated at boot time so that the 0th channel can be used by the application in the smart card unit 200 itself. When the channel assignment / release request is received from the terminal body unit 100 or the card reader 300, the smart card unit 200 allocates / cancels the first, second, and third channels except the channel number 0.

The smart card unit 200 updates and manages the time stamp every time the data is exchanged. When the channel resource is insufficient, the smart card unit 200 searches the channel information database 225 to check the time stamp for each channel, Investigate the point of exchange. Then, based on the time stamp, the channel with the oldest data exchange time is released and newly allocated.

The terminal body unit 100 or the card reader 300 sets a channel in the smart card unit 200 and the terminal unit 100 and the card reader 300 select the channel to be released on the basis of the last time the data is exchanged This can be useful if you want to provide a service that sends data while waiting for a long time.

Hereinafter, a channel setting method of a mobile communication terminal equipped with a smart card according to preferred embodiments of the present invention will be described in detail with reference to FIG. 6 and FIG.

FIG. 6 is a flowchart illustrating a channel setting method of a mobile communication terminal according to an exemplary embodiment of the present invention, and is based on the configurations of FIG. 1 and FIG. 2. Referring to FIG. For convenience of explanation, it is assumed that communication is performed between the application 141 in the terminal body unit 100 and the smart card unit 200, and ISO 7816, an international standard for smart cards, is taken as an example.

First, in step S110, the smart card unit 200 allocates a channel in response to a channel setting request (MANAGE CHANNEL (open)) transmitted from the terminal main body unit 100, and when the channel resource is insufficient, Assume that the channel is released and assigned. At this time, the smart card unit 200 regards the first set channel among the plurality of supportable logical channels as an abnormally terminated channel, releases the channel, and newly allocates the released channel to the received channel setting request.

That is, when all of the N channels that can be supported by the smart card unit 200 are in use, when a new channel setting request (MANAGE CHANNEL (open)) comes in, there is a channel terminated abnormally among all N channels , Releases the oldest channel set for the channel, and then assigns the released channel to the new channel setting request (MANAGE Channel (open)).

Step S110 for allocating the channel resources may be subdivided into steps S111 to S119.

In step S111, each time a plurality of supportable channels are allocated, the smart card unit 200 continuously stores the set time of the channel in the channel information database 215. [

Since the smart card unit 200 can provide a plurality of logical channels for data communication, it allocates different channels according to the device number (devnum), the device number (devnum) and the corresponding channel number (Channel Number) Stores the mapping table in the channel information database 215 and manages the mapping table so that the corresponding channel can be controlled by the device number (devnum).

Each time a channel setting request (MANAGE CHANNEL (open)) is entered, the smart card unit 200 stores the setting time of the corresponding channel in the channel information database 215.

The application 141 of the terminal main body unit 100 transmits a card open command (IC Card OPEN) for using the smart card unit 200 to the smart card driver 111 in step S112_1.

In step S112_2, the smart card driver 111 generates a channel setting request (MANAGE CHANNEL (open)) for a card open command (IC Card OPEN) and transmits it to the smart card unit 200, Receives a transmitted channel setting request (MANAGE Channel (open)).

In step S113, when a channel setting request (MANAGE CHANNEL (open)) is received, the smart card unit 200 inquires whether there is a currently assignable channel in response thereto.

If there is an assignable channel resource, the smart card unit 200 proceeds to step S115 to acquire a channel number to be allocated to allocate a channel for the channel setting request.

If all the channel resources are occupied and the channel can not be allocated, the smart card unit 200 proceeds to step S114. In step S114, the smart card unit 200 searches the channel information database 215 to identify and release the firstly allocated channel among a plurality of available channels. Thereafter, the flow advances to step S115 to acquire the released channel number, thereby newly allocating the released channel to the channel setting request (MANAGE CHANNEL (open)).

In step S116, the smart card unit 200 transmits the channel number obtained in step S115 to the smart card driver 111 of the terminal main body unit 100. In step S116,

In step S117, the smart card driver 111 maps the received channel number to a device number (devnum) and stores the mapping in a mapping table. The smart card driver 111 transmits a response response (ATR) 130). The reset response (ATR) is a response signal of the smart card unit 200 to the reset signal of the terminal main body unit 100.

In step S118, the terminal / service platform 130 transmits the device identifier (fd) corresponding to the device number (devvnum) to the application 141 that transmitted the card open command (IC Card OPEN) together with the reset response do.

In step S119, the application 141 of the terminal main body unit 100 obtains the device identifier fd together with the reset response (ATR) as a result of the card open command (IC Card OPEN).

When the smartcard driver 111 transmits a card open command (IC Card OPEN) in the application 141 in the terminal main body 100, the smart card driver 111 transmits a smart card to the smart card using the channel setting request (MANAGE CHANNEL (open) (Channel Number) from the base station 200.

The smart card driver 111 maps the acquired channel number to a device number (devnum) to be returned as a result of a card open command (IC Card OPEN), manages the mapping number as a mapping table, The device number (devnum) is returned as a result of the card open command (IC Card OPEN) together with the reset response (ATR) obtained at the time of the first activation.

In step S120, a data communication process is performed between the application 141 of the terminal main body unit 100 and the smart card unit 200 through the assigned channel.

An APDU (Application Protocol Data Unit) command is used for communication between the terminal body unit 100 and the smart card unit 200.

The APDU command transmitted to the returned device number (devnum) is transmitted to the smart card unit 200 through a channel mapped to the device number (devnum) on the mapping table. At this time, channel 0 is always used in the application of the smart card unit 200, so that no channel 0 is allocated to the application 141 of the terminal main body unit 100. [

Here, the application 141 of the terminal body unit 100 generates a MAC (Message Authentication Code) for security in the communication process and transmits it together with the APDU command. At this time, if the application 141 converts the channel number included in the CLA (Class byte) of the APDU header to 00, calculates the MAC, and transmits the MAC to the smart card unit 200, When the MAC transmitted from the application 141 of the terminal main body unit 100 is verified, the channel number included in the CLA is converted into 00 and verified.

In step S130, after the data communication process is completed, the smart card unit 200 releases the channel assigned to the corresponding device number (devnum) to return the channel resource. Step S130 includes steps S131 and S132.

In step S131, the application 141 transmits a card end command (IC Card CLOSE) to end the use of the smart card unit 200 by the smart card driver 111. [ The card end command (IC Card CLOSE) includes information necessary for terminating the smart card unit 200 such as a device number (devnum) or a device identifier (fd).

In step S132, the smart card driver 111 generates a channel release request (MANAGE Channel (close)) for a card termination command (IC Card CLOSE) and transmits it to the smart card unit 200, Receives a transmitted channel release request (MANAGE Channel (close)).

In step S140, the smart card unit 200 releases the channel resource allocated to the device number (devnum) in response to the channel release request (MANAGE CHANNEL (close)).

Here, the smart card driver 111 of the terminal main body unit 100 transmits the device number (for example, ID number) received from the application 141 using the channel release request (MANAGE CHANNEL devnum), and returns the terminated device number (devnum) to the application 141. When requesting the end of channel 0 in the application 141, the smart card driver 111 does not deliver the APDU command to the smart card unit 200, but replies that it has been normally terminated.

Transmission and reception of the above-described data communication process and command-response may be performed through a contact channel in which the terminal main body 100 and the smart card unit 200 are physically connected. 6 may be applied between the card reader 300 and the smart card unit 200. In this case, the non-contact channel formed between the smart card unit 200 and the external card reader 300 Communication can be achieved.

FIG. 7 is a data flow diagram illustrating a channel setting method of a mobile communication terminal according to another embodiment of the present invention, and shows a series of processes occurring in the smart card unit 200 of FIG.

First, in step S210, the smart card unit 200 receives a channel setting request from the terminal body unit 100 or the card reader 300, and allocates a channel in response to the received channel setting request. If there is no available channel due to a shortage of channel resources, the channel information database 225 is searched to select a channel to be released based on the time stamp updated every time the data is exchanged, and the selected channel is released and then newly allocated.

The step S210 for channel allocation may be subdivided into steps S211 to S215.

In step S211, the smart card unit 200 stores and manages a channel-specific time stamp for a plurality of available channels in the channel information database 225. [ When each channel is initially allocated, the set time of the channel is stored in the channel information database 225. Every time data exchange occurs through the channel, that is, every time an APDU command is received, the time stamp Is updated.

In step S212, the smart card unit 200 receives a channel setting request transmitted from the terminal body unit 100 or the card reader 300. [

In step S213, the smart card unit 200 checks whether there is a currently assignable channel among a plurality of channels that can be supported in response to the received channel setting request.

If there is an assignable channel, the smart card unit 200 proceeds to step S215 and allocates a channel for the channel setting request.

If there is no assignable channel, the smart card unit 200 proceeds to step S214 and searches the channel information database 225. [ The selected channel is released based on the channel time stamp stored in the channel information database 225, and the selected channel is released. Thereafter, the flow advances to step S215 to newly allocate the released channel. Here, the time stamp indicates the data exchange time, and the smart card unit 200 releases the channel that is the longest before the last data exchange among all the channels based on the time stamps of the plurality of channels, The channel is allocated for a new channel setting request.

Next, in step S220, a data communication process is performed between the smart card unit 200 and the terminal main body unit 100, or between the smart card unit 200 and the card reader 300 through the assigned channel. At this time, the smart card unit 200 performs data communication by transmitting the APDU command through the assigned channel and receiving the response. Whenever the APDU command is received, the smart card unit 200 stores the channel- Update the stamp.

In step S230, the smart card unit 200 releases the allocated channel to secure the channel resource.

Step S230 may be subdivided into steps S231 to S233.

In step S231, the smart card unit 200 determines whether a channel release request is transmitted from the terminal main body unit 100 or the card reader 300 as the data communication process is completed.

When the channel release request is received, the smart card unit 200 proceeds to step S233 and releases the channel allocated for the channel setting request.

If the channel release request is not received after a predetermined time, step S232 may be performed.

The smart card unit 200 sets a maximum allowable time from the time when the last data is exchanged to the time when the channel is released, in seconds or minutes, and then waits for the maximum allowable time in step S232. In this case, the smart card unit 200 can determine a channel that has not exchanged data even after a predetermined maximum allowed time as a channel that ends abnormally, and release the channel, thereby securing channel resources.

In step S233, the smart card unit 200 releases the allocated channel in response to the channel release request.

In the embodiment of FIG. 7, when the channel resource is insufficient, the channel to be released is selected on the basis of the data exchange time instead of the channel setting time, so that it can be applied to a service for temporarily sending data after the channel is allocated.

In addition, if the maximum allowable time is arbitrarily set and then the channel with no data exchange is automatically released so that the specified maximum allowable time passes, the phenomenon that the channel resource becomes insufficient can be improved.

7 may be performed through a non-contact channel formed between the smart card unit 200 and the external card reader 300. The processes of the smart card unit 200 and the smart card unit 200 may be physically Or may be formed through a contact channel formed between the terminal body portions 100 directly connected.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

The present invention can be applied to a mobile communication terminal equipped with a smart card and a channel setting method thereof.

In addition, the present invention can efficiently operate channel resources in a data communication process, and can ensure correct operation of an application applet built on a smart card.

1 is a block diagram of a mobile communication terminal according to an embodiment of the present invention;

2 is a detailed configuration diagram of a smart card unit according to an embodiment of the present invention;

FIG. 3 illustrates a data structure stored in the channel information database of FIG. 2; FIG.

4 is a detailed configuration diagram of a smart card unit according to another embodiment of the present invention;

FIG. 5 illustrates a data structure stored in the channel information database of FIG. 4; FIG.

6 is a data flow diagram illustrating a channel setting method of a mobile communication terminal according to an embodiment of the present invention.

FIG. 7 is a data flow chart illustrating a channel setting method of a mobile communication terminal according to another embodiment of the present invention; FIG.

DESCRIPTION OF THE REFERENCE SYMBOLS

100: Terminal body unit 111: Smart card driver

141: Application 200: Smart card part

230: Applet 300: Card reader

Claims (21)

A terminal body unit for generating a channel setting request, receiving a channel corresponding to the channel setting request, performing a data communication process through the allocated channel, and generating a channel release request for releasing the allocated channel, ; And Allocating a channel in response to the channel setting request, releasing the allocated channel in response to the channel release request, releasing the first channel among a plurality of channels provided when the channel resource is insufficient, A smart card portion that newly allocates a channel And a mobile communication terminal. The smart card system according to claim 1, A channel information database for storing a setting time each time a channel is allocated; An interface for receiving the channel setup request and the channel release request; A channel manager for checking whether there is an assignable channel among the plurality of channels in response to the channel setting request; A first channel assignment unit for assigning a channel according to the channel setting request when the channel management unit determines that there is an assignable channel; And If it is determined that there is no channel allocable due to lack of channel resources, the channel manager searches the channel information database to release the first channel among the plurality of channels, The second channel assigning unit And a mobile communication terminal. The smart card system according to claim 2, And a non-contact type interface unit for performing wireless data communication with an external card reader. The smart card system according to claim 2, Wherein the mobile communication terminal is a contact type interface unit physically connected to the terminal body unit. A terminal body unit for generating a channel setting request, receiving a channel corresponding to the channel setting request, performing a data communication process through the allocated channel, and generating a channel release request for releasing the allocated channel, ; And The method of claim 1, further comprising: allocating a channel in response to the channel setup request; releasing the allocated channel in response to the channel release request; updating a time stamp for a plurality of channels provided at each data exchange time; A smart card unit for selecting a channel to be released based on a time stamp for a plurality of channels, And a mobile communication terminal. The smart card unit according to claim 5, A channel information database for updating a time stamp for each of the plurality of channels at each data exchange time; An interface for receiving the channel setup request and the channel release request; A channel manager for checking whether there is an assignable channel among the plurality of channels in response to the channel setting request; A first channel assignment unit for assigning a channel according to the channel setting request when the channel management unit determines that there is an assignable channel; And Wherein the channel management unit searches the channel information database to release a channel having the longest data exchange time among the plurality of channels when there is no channel allocable due to channel resource shortage, And a second channel allocation unit And a mobile communication terminal. 7. The smart card system according to claim 6, And a non-contact type interface unit for performing wireless data communication with an external card reader. 7. The smart card system according to claim 6, Wherein the mobile communication terminal is a contact type interface unit physically connected to the terminal body unit. A channel information database for storing a setting time each time a channel is allocated; An interface unit for receiving a channel setting request and a channel release request from outside; A channel management unit for checking whether there is an assignable channel among a plurality of channels in response to the channel setting request; A first channel assignment unit for assigning a channel according to the channel setting request when the channel management unit determines that there is an assignable channel; And If it is determined that there is no channel allocable due to a shortage of channel resources, the channel manager searches the channel information database to release the channel that is most distant from the plurality of channels, And a second channel allocation unit A smart card comprising: A channel information database for updating a time stamp for each of a plurality of channels that can be provided at the time of data exchange; An interface unit for receiving a channel setting request and a channel release request from outside; A channel manager for checking whether there is an assignable channel among the plurality of channels in response to the channel setting request; A first channel assignment unit for assigning a channel according to the channel setting request when the channel management unit determines that there is an assignable channel; And Wherein the channel management unit searches the channel information database to release a channel having the longest data exchange time among the plurality of channels when there is no channel allocable due to channel resource shortage, And a second channel allocation unit A smart card comprising: 11. The apparatus according to claim 9 or 10, A contactless interface unit for performing wireless data communication with an external device, or a contact interface unit physically directly connected to an external device. Allocating a channel in response to a smart card supplementary channel setting request, releasing a first set channel among a plurality of channels that can be provided when a channel resource is insufficient, and allocating a newly allocated channel; Performing a data communication process over the assigned channel; Receiving the smart card supplemental channel release request upon completion of the data communication process; And The smart card releasing the assigned channel corresponding to the channel release request And transmitting the channel setting information to the mobile communication terminal. 13. The method of claim 12, Storing the set time in the channel information database every time the smart card additional channel is allocated; The smart card unit receiving the channel setting request; Checking whether there is an assignable channel among the plurality of channels in response to the channel setting request; Allocating a channel in response to the request for setting a channel if the available channel exists; If there is no assignable channel, the smart card unit searches the channel information database to release the first channel among the plurality of channels; And Wherein the smart card unit allocates the released channel corresponding to the channel setting request And transmitting the channel setting information to the mobile communication terminal. 13. The method according to claim 12, And a non-contact channel formed between the smart card unit and an external card reader. 13. The method according to claim 12, And a contact channel formed between the smart card unit and the terminal body unit. Allocating a channel in response to a smart card supplementary channel setting request, selecting a channel to be released based on a time stamp updated every time the data is exchanged at the time of insufficient channel resources, releasing the selected channel, and assigning the selected channel; Performing a data communication process over the assigned channel; Receiving the smart card supplemental channel release request upon completion of the data communication process; And The smart card releasing the assigned channel corresponding to the channel release request And transmitting the channel setting information to the mobile communication terminal. 17. The method of claim 16, Updating a time stamp for each of a plurality of channels to which the smart card unit can be provided at each data exchange time; The smart card unit receiving the channel setting request; Checking whether there is an assignable channel among the plurality of channels in response to the channel setting request; Allocating a channel in response to the request for setting a channel if the available channel exists; If there is no assignable channel, the smart card unit searches the channel information database to select a channel to be released based on a time stamp of the plurality of channels, and releases the selected channel; Wherein the smart card unit allocates the released channel corresponding to the channel setting request And transmitting the channel setting information to the mobile communication terminal. 18. The method of claim 17, wherein in the channel release step, Wherein the smart card unit releases a channel having the longest data exchange time among the plurality of channels based on a time stamp of the plurality of channels. 18. The method of claim 17, wherein in the channel release step, The smart card unit sets in advance a maximum allowable time from when the last data is exchanged to when the channel is released and determines that the channel having no data exchange even after the maximum allowable time passes is determined to be an abnormally ended channel Wherein the channel setting method of the mobile communication terminal comprises: 17. The method of claim 16, And a non-contact channel formed between the smart card unit and an external card reader. 17. The method of claim 16, And a contact channel formed between the smart card unit and a terminal body unit physically directly connected to the smart card unit.

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