KR20110024855A - Method for processing network connection of multi-band multi-mode terminal with supporting heterogeneity communication network and terminal device for use therein - Google Patents

Abstract

PURPOSE: A method for processing network connection of a multi-band multi-mode terminal with supporting a heterogeneity communication network and a terminal device used in the same are provided to efficiently perform a mode switching operation and a connection processing operation according to the states of supporting communication networks. CONSTITUTION: A communication module(110) performs a procedure for registering connection to a first communication network when a terminal is moved. A connection confirmation module(120) periodically confirms whether or not the terminal is placed in the coverage region of a second communication network except the first communication network. If it is judged that the connection of the second communication network is enabled, a connection control module(130) performs the procedure for the connection registration to the second communication network. If the connection of the second communication network is disabled, the connection control module turns off the power of the second communication network.

Description

Method for processing network connection of multi-band multi-mode terminal with supporting heterogeneity communication network and terminal device for use therein

The present invention relates to a multi-band multi-mode terminal device that can be connected to a plurality of heterogeneous communication networks, and more particularly, to a method and a terminal device for switching a mode of a terminal and performing a network connection by distinguishing a supported network state.

With the recent rapid development of electronic engineering and communication engineering, mobile communication terminals have various functions. That is, with the rapid development of wireless communication and data processing technology, people can use not only voice calls but also Internet access, video communication and video message transmission using mobile communication terminals. In addition, due to the rapid dissemination of mobile communication terminals, mobile communication terminals have become an essential means of communication in modern life, such as a considerable amount of communication occurring in human relationships through mobile communication terminals.

In addition, as a result of the continuous development of the mobile communication infrastructure and the development of technology therefor, various kinds of wireless mobile communication networks exist in recent years, and more diverse types of communication networks are expected to emerge in the future. Multiband multimode terminals and dual band dual mode terminals have been developed to support and access these various types of communication networks. Such multiple or dual terminals have a function of covering all communication networks corresponding to a plurality of bandwidths or connecting to two or more communication networks having different methods. That is, the communication modem corresponding to each communication network is provided in one terminal device.

Conventional multi-mode terminals have a structure for individually connecting to each communication network by a modem corresponding to each communication network provided in the terminal. Accordingly, a conventional multi-band multimode terminal can carry out communication service of a corresponding network by selectively connecting to a plurality of communication networks while carrying a single terminal device, or simultaneously accessing all supportable communication networks to use a communication service. Implement In addition, the multi-mode terminal is equipped with a subscriber authentication module or subscriber identification module used for subscriber authentication to perform authentication processing when accessing a communication network. In this case, the subscriber authentication module may be a USIM card. For example, a general USIM card corresponding to each communication network and an integrated USIM card corresponding to both of two or more communication networks are currently used.

However, the conventional multimode terminals as described above have a problem in that the access control process for each supporting network is not made clearly and efficiently. That is, there is an inefficient problem of attempting all possible communication connections without considering the surrounding communication environment, or using only the communication network to be accessed without a separate user operation even in a state where other communication networks can be used.

When operating all the modes of the multi-mode terminal as described above, even when any one of the communication network can not be connected, the corresponding modem of the terminal may operate to consume unnecessary power. Considering that there is a limit to the battery capacity of the terminal and the issue of making efficient use of the terminal with a limited battery capacity, the above problem is in urgent need of improvement.

In addition, when the WCDMA network and the WiBro network are mixed, the above two communication networks are simultaneously connected by a multi-mode terminal, so that voice communication is performed through the WCDMA network and data communication is performed through the WiBro network, thereby reducing communication load and communication quality. It can bring about effects such as increasing.

Accordingly, the present invention has been made to solve the above problems, and improves the access control structure for the heterogeneous communication network of the multi-band multi-mode terminal device, efficiently switching the mode and connection of the terminal according to the state of the supporting network It is an object of the present invention to provide a terminal apparatus and a method for accomplishing a process.

Furthermore, by classifying the subscriber authentication module installed in the multi-mode terminal, it selectively performs mode switching and function blocking of the terminal, and when a user requests access to a specific communication network, efficient mode switching and access control can be performed. Another object is to provide a terminal device and a method.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Further, objects and advantages of the present invention can be realized by the means and the combination shown in the appended claims.

In order to achieve the above object, the network connection processing method of the multi-band multimode terminal supporting the heterogeneous communication network according to the present invention, the multi-band multi-mode terminal device that can be connected to a plurality of communication networks in a heterogeneous wireless network environment CLAIMS 1. A network connection processing method, comprising: (a) performing a connection registration procedure to a first communication network with activation of a terminal; (b) after completion of connection to the first communication network, checking whether the second communication network is accessible; (c) if the second communication network is accessible, performing a connection registration procedure with the second communication network; And (d) if the second communication network is not available, shutting off power of the second communication network modem.

According to another aspect of the present invention, a multiband multimode terminal device capable of connecting to a plurality of communication networks in a plurality of heterogeneous wireless network environments, comprising a plurality of modems connectable to a plurality of heterogeneous communication networks, the first communication network at the time of startup of the terminal Multi-band multi-mode communication means for performing a connection registration procedure to the network; Connection availability checking means for periodically checking whether the second communication network is included in the coverage of the second communication network in addition to the first communication network; And if it is determined that the connection of the second communication network is possible by the connection availability checking means, performs a connection registration procedure to the second communication network, and if the connection is not available, the multi-band multimode communication means of the second communication network modem. Provided is a multiband multimode terminal apparatus supporting heterogeneous communication networks, including: connection control means for shutting off power.

According to the present invention, in a multi-band multi-mode terminal device supporting a plurality of heterogeneous communication networks, whether or not the second communication network is connected according to the surrounding environment and state, and processing to switch the mode of the terminal accordingly, saving power of the terminal And, if necessary, it can support high quality communication service, thus providing the effect of more efficient terminal operation.

In addition, by distinguishing the types of USIM cards installed in the multi-mode terminal device to prevent unnecessary terminal mode switching and connection attempts, the terminal device can operate more smoothly by blocking meaningless operations and actions in the terminal. Provide the effect of doing so.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a diagram schematically illustrating a configuration of a multiband multimode terminal device supporting a heterogeneous communication network and a communication network supporting the same according to an embodiment of the present invention.

Referring to FIG. 1, the multi-band multimode terminal device 100 supporting the heterogeneous communication network according to the present invention has a function of connecting to a plurality of heterogeneous radio access networks (RATs) 200. The wireless communication networks 200 may be targeted by wireless access networks 201, 202, and 203 of different schemes or bandwidths.

Examples of the wireless communication network 200 may include a WCDMA, GSM, CDMA, WiBro, WiFi, a wireless LAN network system, and the like. Also, among the wireless communication networks 200, a master communication network to which the multi-mode terminal device 100 basically connects may be set. For example, a WCDMA communication network currently covering the widest area may be set as the master communication network. When the master communication network is set up as described above, the multi-mode terminal device 100 connects to the master communication network in a basic single mode when the terminal is activated before the multi-mode.

Here, the multi-band multi-mode terminal device 100 may be equipped with a subscriber authentication module 150 used for subscriber authentication processing when the communication network is connected. The subscriber authentication module 150 records subscriber information for processing subscriber authentication in a mobile communication system. In addition, the subscriber authentication module 150 is made of a removable structure in the terminal device, and provides the corresponding subscriber information when accessing the communication network from the terminal device to be mounted and used for subscriber authentication processing.

The subscriber authentication module 150 mainly uses a Universal Subscriber Identity Module (USIM) card, and examples thereof include a Universal Intergrated Circuit Card (UICC) and a Subscriber Identity Module (SIM) card. The USIM is a module used for subscriber authentication in a UMTS communication network, and the SIM is a module used for subscriber authentication in a GSM communication network. In addition, the UICC may include a subscriber information module, such as the USIM, SIM card, and other various information, data, and storage space.

The subscriber authentication module 150 generally performs authentication processing on a general subscriber authentication module, that is, a general USIM card and a plurality of heterogeneous communication networks, capable of performing authentication processing on a corresponding communication network corresponding to each communication network method. It can be divided into an integrated subscriber authentication module, that is, an integrated USIM card. Therefore, when the USIM card installed in the multi-mode terminal device 100 is a general USIM card, only one communication network may be connected, and in the case of an integrated USIM card, all the communication networks or all supporting networks will be accessible.

As described above, the multi-band multi-mode terminal device 100 according to the present invention basically connects to a communication network set as a master communication network among supportable communication networks 200, and selectively connects with other communication networks according to the surrounding environment and state. And mode switching processing of the terminal.

2 is a diagram illustrating an example of a change in the surrounding environment and state according to the location of the multi-mode terminal device in an environment in which heterogeneous communication networks are mixed.

First, many heterogeneous communication networks are mixed in the drawing. Examples of these multiple networks include WCDMA, WiBro, and WiFi networks. WCDMA networks cover the widest range, and WiBro and WiFi networks are within the coverage of this WCDMA network coverage.

In this case, the multi-mode terminal device 100 is a terminal device supporting all three heterogeneous communication networks and will be a triple-band triple-mode (TBTM) terminal. In addition, when the terminal device 100 moves to the A position, the terminal device 100 is included in the coverage of the WCDMA communication network and is in a surrounding environment and a state that does not reach the coverage of other communication networks. In addition, when moved to the B position is included in the coverage of both the WCDMA and WiBro communication network, the environment and state that can be connected to both the WCDMA and WiBro communication network. In addition, when moving to the C position, it is simultaneously included in the coverage of the WCDMA and the WiFi communication network, and becomes an environment and state accessible to both communication networks. In addition, various combinations of the surrounding environment and state may be made according to the coverage range of each heterogeneous communication network and the location of the terminal device 100.

As illustrated in the example of FIG. 2, the multi-band multimode terminal device 100 according to the present invention changes from time to time according to the surrounding environment and state of a heterogeneous communication network or the position of the terminal. According to this change, the terminal device 100 efficiently performs the access control process and the mode switching process, thereby reducing the power consumption of the terminal device and supporting the maximum communication quality.

Next, a multiband multimode terminal device supporting a heterogeneous communication network according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a diagram illustrating a configuration of a multiband multimode terminal device supporting heterogeneous communication networks according to the present invention.

As shown in the drawing, the multi-mode terminal device 100 according to the present invention includes a communication module 110 for performing communication and connection processing with a plurality of heterogeneous communication networks, a connection confirmation module 120 for confirming whether each communication network is accessible, Connection control module 130 for performing connection processing with each communication network and mode switching processing of the terminal according to the surrounding environment and state.

The communication module 110 includes a plurality of communication modems 111, 112, and 113 that can be connected to a plurality of heterogeneous communication networks, and perform wireless communication by connecting to a corresponding communication network through each communication modem. In addition, the communication module 110 is provided with a startup connection processing unit 115 so that power is applied to the terminal device to perform a driving and booting process and to perform a connection registration procedure to the first communication network. That is, the activation connection processing unit 115 performs a role of performing connection processing to a preset master communication network when the terminal is activated. The master communication network may be set as a first communication network connected through the first modem 111. For example, the WCDMA communication network having the widest coverage may be set as the first communication network.

The connection confirmation module 120 identifies a communication network accessible at a current location and state among heterogeneous communication networks supported by the multimode terminal device. In this case, when the connection with the first communication network set in advance through the communication module 110 is made, it is possible to check whether the other supportable communication networks are accessible. In addition, the connection confirmation module 120 may check whether the connection can be continuously in real time, or may periodically check whether the connection can be connected at a predetermined time interval.

The connection confirmation module 120 includes a broadcast message receiver 122, a message reader 124, a connection confirmation unit 126, and the like. The broadcast message receiving unit 122 serves to receive a broadcast message received at a location where the terminal device is currently located. In this case, since the terminal is connected to the WCDMA communication network as the terminal is activated, the broadcast message provided through the WCDMA broadcast channel can be received. An example of the WCDMA broadcast message may be a System Information Block (SIB) message. In addition, when included in the coverage of the heterogeneous communication network at the current location, it is possible to receive a broadcast message provided by the communication network.

The message reading unit 124 reads the received broadcast message and extracts necessary information. That is, it analyzes the broadcast message received through the broadcast message receiver 122, and extracts this information when information such as accessibility or supportability is recorded. For example, the WCDMA system checks and analyzes SIB # 3, which is the third block of the received SIB message, to extract Cell ID information included in the message. The Cell ID information includes information on a cell that is currently located, and also includes information about networks that cover the current cell.

The connection check unit 126 plays a role of determining whether the terminal can support the communication network based on the extracted information by reading the message. The connection check unit 126 may determine a communication network accessible by comparing the communication network that the terminal can support with the communication network information present in the cell information based on the cell information extracted by analyzing the message in the message reading unit 124. That is, in the example of the WCDMA system, it is read that WiBro identification information exists in the Cell ID, and if the terminal has a WiBro modem, it is determined that the WiBro communication network can be connected to the WiBro modem.

The access control module 130 controls the connection process with each communication network and the mode switching process of the terminal according to the state of the terminal device itself and the surrounding communication network environment through the access confirmation module 120. In this case, the information on the surrounding communication network environment may check the information of the accessible communication network among the communication networks that can be supported through the access check module 120. Further, the information on the state of the terminal itself includes the state information on the subscriber authentication module installed in the terminal required for subscriber authentication when connecting to each communication network, and the matter that the terminal user requests / instructs the direct network connection through the terminal operation. An example of the terminal state information at the time of connection control is mentioned.

The access control module 130 includes a connection control processing unit 132, a modem power control unit 134, a subscriber authentication module determining unit 136, a user input processing unit 138, and the like. The connection control processing unit 132 performs connection processing for heterogeneous communication networks of the multi-mode terminal device and control processing for controlling which communication network is connected. First, when the connection processing to the opposing communication network is determined, the communication module 110 performs a role of performing the connection processing and registration processing to the communication network by driving the modem of the communication network. At this time, connection processing is performed according to the connection procedure of each communication network. As such, when the multi-mode terminal device connects to another second communication network in addition to the first communication network, the terminal performs mode switching processing from the single mode to the dual mode. Such mode switching is performed from single mode to dual, triple mode or the like, or from dual to single mode.

The next control process performs a role of controlling which communication network the terminal can perform connection processing with. In the control process, when the communication network accessible by the connection confirmation module 120 is confirmed, the control process is performed to connect to the communication network. On the other hand, the connection check module 120 controls to limit the connection processing except the communication network that can be connected.

In addition, when it is determined by the subscriber authentication module determination unit 136 to be described later that it is impossible to authenticate the communication connection, control processing for restricting the connection of the communication network is performed. Further, when the user input processing unit 138, which will be described later, connects to a communication network desired by the user, when a blocking process for other communication networks is required, control processing for restricting access to the corresponding communication network may be performed.

The modem power control unit 134 controls to cut off power of a communication modem corresponding to a communication network that does not perform a communication connection among the communication networks supported by the multi-mode terminal device. That is, among the modems of the communication module 110, the modem corresponding to the communication network to which the connection is restricted performs control processing to cut off the power to reduce power consumption.

The subscriber authentication module determination unit 136 checks the subscriber authentication module installed in the terminal to determine whether the integrated authentication module or the general authentication module. The mobile communication terminal is equipped with a subscriber authentication module that records subscriber information used for subscriber authentication when accessing a communication network. The subscriber authentication module includes, for example, a USIM used in a WCDMA communication system and a SIM card used in a GSM communication system. The subscriber authentication module may be included in an expanded UICC.

Since only a single communication network is connected to an existing single mode terminal device, the subscriber authentication module also includes a general subscriber authentication module used only in the corresponding communication network. On the other hand, since the multi-mode terminal device is connected to various types of communication networks, the subscriber authentication module also has several modules corresponding to each communication network. By improving this, an integrated subscriber authentication module that can be used in all of a plurality of communication networks has been developed and used.

Accordingly, the subscriber authentication module determination unit 136 distinguishes whether the subscriber authentication module mounted in the terminal is a general authentication module or an integrated authentication module and provides the connection control module 130 to the access control module 130. Through this, in the case of the general authentication module in the multi-mode terminal device, since only one communication network can be authenticated, it is impossible to connect to one or more communication networks. Can be controlled. This is to prevent unnecessary connection attempts in the terminal in advance to reduce the load and to efficiently save power consumption.

The user input processing unit 138 performs a function of processing a communication network access request and an access termination request operation input of a terminal user. That is, when the user's manipulation input information is a request for connection to a specific communication network and a request for termination, the controller recognizes the request and provides the same to the access control processor 132. Through this, the access control processing unit 132 may perform a connection control process for a communication network for which the connection confirmation module 120 does not determine whether the connection is possible or a communication network forcibly terminating the connection. An example of a communication network that performs connection and termination upon the user's request is a WiFi communication network and a WLAN communication network.

As described above, the multi-band multi-mode terminal device according to the present invention effectively performs connection processing and mode switching processing for heterogeneous communication networks according to the surrounding environment and the terminal state, and controls the modem of a communication network not connected to automatically cut off power. As a result, the power consumption of the terminal can be efficiently saved. In addition, when located in the coverage of voice-optimized communication networks (eg WCDMA, GSM, etc.) and data-optimized communication networks (eg WiBro, WiFi), it is necessary to connect to both communication networks and share each communication. It provides the effect of reducing the load and significantly improving the communication quality.

4 is a flowchart illustrating a procedure of a network access processing method of a multiband multimode terminal supporting heterogeneous communication networks according to an embodiment of the present invention.

Referring to the drawing, first, power is applied to a multi-band multi-mode terminal device, and a procedure of starting a terminal after a booting procedure is performed.

When the terminal is activated, a wireless communication connection procedure to the first communication network is performed. At this time, a registration procedure such as wireless access procedure and location registration and authentication processing of the first communication network is performed. The connection processing with the first communication network is performed through the first communication network modem provided in the terminal. Here, it is preferable that the first communication network is mainly set to WCDMA having the most coverage and the widest coverage.

A procedure for determining whether the connection with the first communication network is successful as a result of the connection processing is in progress. In this case, when the connection with the first communication network fails, a procedure for shutting off the power of the second communication network modem provided in the terminal is performed. (S30, S35)

On the other hand, if the connection with the first communication network is successful, a procedure for checking whether the second communication network that can be supported by the terminal is accessible. Of course, when the third communication network can be supported, it is also confirmed whether the third communication network can be connected. In addition, whether the second communication network can be accessed may be confirmed through a broadcast message from the communication network received in the region where the corresponding terminal is located. That is, when the WCDMA communication network system is already connected, the cell identification information may be extracted from the broadcast message received through the WCDMA broadcast channel to check other communication network information that is in service or included in the coverage of the corresponding cell. That is, when the second communication network is called the WiBro communication network, the cell identification information includes information for identifying whether the WiBro communication network is a service area.

If it is determined that the connection to the second communication network is impossible as a result of checking whether the connection is possible, the procedure of disconnecting the power of the second communication network modem provided in the terminal is performed. This is to reduce the power consumption of the terminal by cutting off the power of the corresponding communication modem when the surrounding situation or state that cannot be connected to the second communication network (S50, S35).

On the other hand, when it is determined that the connection is possible as the second communication network service area, a procedure for confirming the subscriber authentication module installed in the terminal is performed as a next step. At this time, the subscriber authentication module is divided into a general subscriber authentication module or an integrated subscriber authentication module, and confirmed by either of them. The general subscriber authentication module is used for subscriber authentication for one communication network, and the integrated subscriber authentication module can perform all subscriber authentication for a plurality of communication networks. The subscriber authentication module is used USIM, SIM, UICC, etc. (S60).

If it is confirmed that the subscriber authentication module is a general authentication module, the procedure for shutting off the power of the second communication network modem is performed. That is, since the general authentication module can be used only for the authentication process of the first communication network that is already connected, even when attempting to connect to the second communication network, the authentication process cannot be performed and the connection can only fail. 2 Maintains efficient operation of terminal by cutting off connection of communication network. (S70, S35)

In addition, after the procedure (S35) of shutting off the modem power of the second communication network is performed, the procedure from step A is performed again or the procedure of step S40 is performed. That is, the power of the second communication network modem is cut off, but the connection is continuously checked.

On the other hand, if it is determined that the integrated authentication module, the process of performing connection processing, registration, authentication processing, etc. to the second communication network is performed. Through this, the multi-mode terminal device operates in the dual mode to access both types of communication networks and to receive a higher quality communication service. (S80)

Thereafter, although not shown in the drawing, the procedure of step S40 is repeatedly performed. That is, periodically, the procedure for connecting to the second communication network or disconnecting the power of the second communication network modem continues according to whether the second communication network can be connected periodically.

5 is a diagram illustrating a network access procedure according to a user's request in a network access processing method of a multiband multimode terminal according to another embodiment of the present invention.

First, in the present embodiment, it is assumed that the first communication network and the second communication network are WCDMA and WiBro communication networks, and it is assumed that the third communication network is a WiFi communication network.

At any point in the network access processing procedure described with reference to FIG. 4, there may be a request for access to a third communication network through an operation input of a terminal from a user.

As such, when a connection request for the third communication network, that is, the WiFi communication network is input from the user through the terminal input means, the multi-mode terminal attempts to connect to the WiFi communication network.

At this time, a procedure for checking whether the terminal device is currently connected to the first and second communication networks, that is, the WCDMA / WiBro communication network, is performed.

If it is determined that the device is not connected to any communication network as soon as it is confirmed, the connection connection procedure for the WiFi communication network is immediately performed.

On the other hand, when it is confirmed that the user is connected to another communication network, the user is informed that the user is already connected to another communication network together with the information of the connected communication network, and the user confirms whether or not to perform the WiFi connection. (3)

After the access information is announced, when a signal for canceling the WiFi connection connection is input from the user, a procedure of continuously maintaining the communication connection state with the currently connected communication network is performed. That is, it maintains the present state. (4, 8)

On the other hand, when a signal for determining the connection to the WiFi input is input to the terminal is a procedure for blocking the connection of the communication network being connected. In this case, the two WCDMA / WiBro communication networks can block all access and each corresponding communication modem can also be controlled to cut off the power. Further, the WCDMA communication network may continue to maintain the connection, perform control processing for disconnecting the WiBro communication network, and powering off the modem. This allows a selective control process according to the setting of the terminal usage policy.

As described above, a procedure of connection access processing to the WiFi communication network is performed at the request of the user. In this case, procedures such as registration processing and authentication processing may be additionally performed. (6)

Next, when the WiFi connection is successfully connected, the WiFi communication service is used, and a procedure for determining whether the WiFi connection is terminated while using the communication service is performed. In this case, the connection may be terminated at the request of the user, or the connection may be terminated due to the surrounding environment and state.

When the WiFi connection is terminated, the procedure is proceeded from the beginning from step A in FIG. 4, and if not, the procedure of step (6) is repeatedly repeated to maintain the WiFi connection to provide a communication service. . That is, when the WiFi connection is terminated, the access control process for the first and second communication networks is performed again to access another communication network.

6 is a diagram illustrating an example of a connection processing procedure between a WCDMA communication network and a WiBro communication network in a method for processing a network connection of a multimode terminal according to an embodiment of the present invention.

As shown in the figure, it is assumed that the first communication network is a WCDMA communication network and the second communication network is a WiBro communication network.

First, when power is applied to the multi-mode terminal device, the terminal is booted and started up.

A registration procedure with a WCDMA communication network, which is a preset master communication network, is performed along with startup. That is, WCDMA connection, registration, and authentication processing are performed (S1).

When connected to the WCDMA communication network, a broadcast message is received by the terminal through a broadcast channel. At this time, the cell ID information included in the SIB # 3 of the broadcast message is checked to determine whether the WiBro indicator is included. If the area where the terminal is currently located is a WiBro service area, the WiBro indicator will be included in the cell identifier (SIB = 1), and if it is not the service area, the indicator will not be included (SIB = 0).

If the WiBro indicator is checked and it is confirmed that the indicator is not included (SIB = 0), the power of the WiBro modem provided in the terminal is cut off (S5).

On the other hand, if the WiBro indicator is checked and it is confirmed that the indicator is included (SIB = 1), a procedure of checking the USIM card type mounted on the terminal is next performed. By checking the card type, a procedure is performed to distinguish whether it is a general USIM for WCDMA or an integrated USIM for WCDMA / WiBro (S3).

If it is confirmed as a general USIM, the procedure returns to the procedure of S5 to cut off the power of the WiBro modem (S5).

On the other hand, if it is confirmed as an integrated USIM, the registration process to the WiBro communication network is normally performed. At this time, a connection to the WiBro communication network, registration, and authentication procedure may be additionally performed.

Although the present invention has been described above by means of limited embodiments and drawings, the present invention is not limited thereto and will be described below by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of the claims.

The following drawings, which are attached to this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical spirit of the present invention, the present invention includes matters described in such drawings. It should not be construed as limited to.

1 is a diagram schematically illustrating a configuration of a multiband multimode terminal device supporting a heterogeneous communication network and a communication network supporting the same according to an embodiment of the present invention.

2 is a diagram illustrating an example of a change in the surrounding environment and state according to the location of the multi-mode terminal device in an environment in which heterogeneous communication networks are mixed.

3 is a diagram illustrating a configuration of a multiband multimode terminal device supporting heterogeneous communication networks according to the present invention.

4 is a flowchart illustrating a procedure of a network access processing method of a multiband multimode terminal supporting heterogeneous communication networks according to an embodiment of the present invention.

5 is a diagram illustrating a network access procedure according to a user's request in a network access processing method of a multiband multimode terminal according to another embodiment of the present invention.

6 is a diagram illustrating an example of a connection processing procedure between a WCDMA communication network and a WiBro communication network in a method for processing a network connection of a multimode terminal according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: multi-mode terminal 120: USIM card

200: multiple communication networks

Claims (13)

A network connection processing method of a multiband multimode terminal device which can be connected to a plurality of communication networks in a plurality of heterogeneous wireless network environments, (a) performing a connection registration procedure to a first communication network with activation of a terminal; (b) after completion of connection to the first communication network, checking whether the second communication network is accessible; (c) if the second communication network is accessible, performing a connection registration procedure with the second communication network; And (d) disconnecting power of a second communication network modem when the second communication network is not available; network access processing method of a multi-band multimode terminal supporting heterogeneous communication networks. The method of claim 1, Step (c) is, (1) checking a subscriber authentication module mounted in the terminal when the second communication network is accessible; (2) if the subscriber authentication module is an integrated subscriber authentication module capable of authenticating a plurality of communication networks, performing a connection registration procedure with a second communication network; And (3) if the subscriber authentication module is a general subscriber authentication module capable of authenticating one communication network, shutting down a power supply of the second communication network modem; Network connection processing method of a band multimode terminal. The method of claim 2, The subscriber authentication module is any one of a Universal Integrated Circuit Card (UICC), a Universal Subscriber Identity Module (USIM), and a Subscriber Identity Module (SIM) card. Way. The method according to claim 1 or 2, Step (b) is, A network connection processing method of a multiband multimode terminal supporting heterogeneous communication networks, characterized in that it periodically checks whether the area is accessible to the second communication network at predetermined intervals. The method according to claim 1 or 2, The first communication network is a WCDMA communication network system, the second communication network is a WiBro communication network system, characterized in that the network connection processing method for a multi-band multimode terminal supporting heterogeneous communication networks. The method of claim 5, Step (b) is, The method for processing network access of a multiband multimode terminal supporting heterogeneous communication networks according to claim 1, wherein the broadcast message received through the broadcast channel from the WCDMA network is referred to by referring to a Cell ID of SIB3. The method according to claim 1 or 2, After step (a) above, (e) shutting down the power of the second communication network modem or cutting off the power of the first communication network modem and the second communication network modem when a connection to the third communication network is requested through an input operation from a terminal user; Network access processing method of a multi-band multi-mode terminal supporting a heterogeneous communication network further comprising. The method of claim 7, wherein After step (e), When the connection of the third communication network is terminated, the network connection processing method of a multiband multimode terminal supporting heterogeneous communication networks, characterized in that to perform the procedure of step (a). The method of claim 7, wherein And the third communication network is a WiFi communication network system or a wireless LAN communication network system. The method according to claim 1 or 2, In step (a), When the connection registration to the first communication network fails, the power of the second communication network modem is cut off, and when the connection of the first communication network is possible again, the procedure of step (a) is performed. Network connection processing method of a multiband multimode terminal supporting heterogeneous communication networks. A multiband multimode terminal device capable of connecting to a plurality of communication networks in a plurality of heterogeneous wireless network environments, A multiband multimode communication means having a plurality of modems connectable to a plurality of heterogeneous communication networks, and performing a connection registration procedure to the first communication network at startup of the terminal; Connection availability checking means for periodically checking whether it is included in coverage of a second communication network in addition to the first communication network; And If it is determined that the connection is possible, the second communication network can perform a connection registration procedure to the second communication network. Connection control means for shutting off the power; Multi-band multimode terminal device supporting a heterogeneous communication network. The method of claim 11, The connection control means, When the second communication network can be connected, the subscriber authentication module installed in the terminal is checked, and in the case of an integrated subscriber authentication module capable of authenticating a plurality of communication networks, the access registration procedure of the second communication network is performed. In the case of a general subscriber authentication module capable of authenticating a communication network, the multi-band multi-mode terminal apparatus supporting heterogeneous communication networks is controlled to cut off power of the second communication network modem. 13. The method according to claim 11 or 12, The connection control means, When a connection to the third communication network is requested through a user's input operation, the heterogeneous communication network may be disconnected or the first communication modem and the second communication modem may be disconnected. A multiband multimode terminal device.

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