KR20110025031A - Soft switching signaling scheme for gateway interface between local area network and wide area network - Google Patents

Abstract

PURPOSE: A soft switching signaling method of a local area network and an apparatus thereof are provided to offer a service of high quality and to increase the efficiency of a gateway communication. CONSTITUTION: A local area wireless interface unit(210) communicates with a mobile terminal and a local wireless interface. A global wireless interface unit(230) communicates with a base station in a global area network. A signaling management entity(220) manages signaling for connecting the local wireless interface unit and the global wireless interface. A mobile terminal searches a seamless signaling interworking device of the local area network.

Description

Soft Switching Signaling Scheme for Gateway Interface and Local Area Network and Wide Area Network through Gateway

The present invention relates to a technique for interworking a local area network and a wide area network, and a soft switching signaling method and apparatus therefor for a local area network and a wide area network through a gateway. The local area network may be, for example, a local area wireless interface in accordance with IEEE 802.11 and Wi-Fi standards. The wide area network may be, for example, a wide area air interface according to the IEEE 802.16 standard. Examples of wide area networks include WiBro, WiMax, and the like.

In next-generation vehicles, the rapid provision of various information through the use of wireless communication infrastructure is an important service field. However, current CDMA mobile communication has a relatively low data transfer rate compared to expensive communication rates, and therefore, it is difficult to activate various information quickly.

Next generation IMT-Advanced mobile communication technology is IP based and can provide up to 100Mbps in high speed mobile environment. Therefore, in the future, the officeization of the vehicle may develop rapidly. In the next-generation ubiquitous environment, it is necessary to provide high-speed, high-quality, high-reliability infotainment service to passengers in vehicles such as small cars, about 10 medium-sized buses, and more than 100 large-scale KTX trains, and it is expected to develop into offices of vehicles. .

In case of using a general small terminal used in the existing mobile communication system to evolve into an office of a vehicle, it is not easy to apply the technology for improving the performance of the communication service in the terminal due to the limitation of space and power usage. In addition, due to the inter-cell interference in the cell boundary region, there is a problem in that performance is greatly degraded in a general small terminal.

KTX is currently providing Internet services to passengers for the vehicle's officeization. High-speed trains provide Internet services to WLAN users through matching between 3GPP and WLAN. However, KTX should always establish 3GPP connection in order to provide Internet service to WLAN users. This leads to waste of cost through unnecessary connection establishment.

An object of the present invention for solving the problems of the prior art, and the soft switching signaling method of a local area network and a wide area network through a gateway that can improve the communication quality through the interworking with the G / W equipped with a high efficiency antenna and To provide a device.

In addition, an object of the present invention is to obtain a high quality service by acquiring user information and mutual authentication parameters through a mobile terminal and a short range wireless interface and performing communication connection through signaling interworking with a base station of a wide area network using the same. To provide a gateway device.

According to an embodiment of the present invention, a gateway device includes a short range wireless interface unit for communicating with a mobile terminal located in a vehicle through a short range wireless interface, and a wide area radio for communicating with a base station of a wide area network through a wide area wireless interface. An interface unit and a signaling management entity for managing signaling for interworking the short-range wireless interface with the wide-area wireless interface are included.

In this case, the short range wireless interface may be an IEEE 802.11 standard, and the wide area wireless interface may be an IEEE 802.16 standard.

In this case, the mobile terminal can search for the gateway through a periodic scan according to the IEEE 802.11 standard.

In this case, when the local area wireless interface unit receives mutual authentication information used by the mobile terminal in communication with the wide area network from the mobile terminal, and the signaling management entity receives the mutual authentication information, The wide area wireless interface may be controlled to perform communication.

In this case, the mutual authentication information may include information on an authentication method used by the mobile terminal in communication with the wide area network, QoS related parameters, and mutual authentication parameters.

In this case, the signaling management entity may control the wide area radio interface to perform an authentication process with the base station of the wide area network using the mutual authentication information.

In this case, the signaling management entity may control the short range wireless interface unit and the wide area wireless interface unit so that independent communication is provided for each of the plurality of users by transmitting data frames through different channels for each of a plurality of users.

In this case, the MAC header of the packet transmitted through the wide area air interface may include information on how many users have been packaged.

According to an embodiment of the present disclosure, a soft switching signaling method of a local area network and a wide area network may include: searching for a gateway supporting a short range wireless interface in a vehicle, and transmitting a join request message to the gateway; Receiving a response to the join request message, completing the establishment of a short-range wireless interface connection with the gateway, transferring mutual authentication information for a wide-area wireless interface connection to the gateway, and the gate Receiving a switching complete message from the way to the wide area wireless interface.

According to another embodiment of the present invention, a soft switching signaling method of a local area network and a wide area network may receive a join request message from a mobile terminal through a local area wireless interface, and receive a response message for the join request message. Transmitting to the mobile terminal, completing the establishment of a short-range wireless interface connection with the mobile terminal, receiving mutual authentication information for the wide-area wireless interface connection from the mobile terminal, and transmitting to the wide-area network through the wide-area wireless interface. Attempting entry into a network, performing an authentication procedure with a base station of the wide area network using the mutual authentication information, completing the wide area wireless interface connection setting, and moving a switching complete message through the short range wireless interface. Send to terminal It includes a step.

Provided are a soft switching signaling method and apparatus for a local area network and a wide area network through a gateway that can improve communication quality through interworking with a G / W equipped with a high efficiency antenna.

In addition, by obtaining the user information and mutual authentication parameters through the mobile terminal and the short-range wireless interface and by using the communication connection through the signaling interworking with the base station of the wide area network, it is possible to provide a high quality service.

1 illustrates an entire system for interworking with a local area wireless network and a wide area network in a vehicle according to an embodiment of the present invention.
2 illustrates a local area network access process in a mobile terminal according to an embodiment of the present invention.
3 and 4 illustrate a soft switching signaling method of a local area network and a wide area network according to an embodiment of the present invention.
FIG. 5 illustrates the method illustrated in FIG. 4 in more detail.
6 shows a MAC header format used in a G / W according to the prior art.
7 illustrates a MAC header format used in a G / W according to an embodiment of the present invention.
8 shows QoS related parameters of an IEEE 802.16 interface.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present invention, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terminology used herein is a term used to properly express a preferred embodiment of the present invention, which may vary according to a user, an operator's intention, or a custom in the field to which the present invention belongs. Therefore, the definitions of the terms should be made based on the contents throughout the specification.

In the following description, the local area network may be, for example, a local area wireless interface according to the IEEE 802.11 standard. The wide area network may be, for example, a wide area air interface according to the IEEE 802.16 standard. In some cases, the local area network may be represented by a local area wireless interface or an IEEE 802.11 interface or an IEEE 802.11 network, and the wide area network may be represented by a wide area wireless interface or an IEEE 802.16 interface or an IEEE 802.16 network.

Therefore, in the following description, the description will focus on the IEEE 802.11 interface and the IEEE 802.16 interface, but embodiments of the present invention should not be construed as being limited.

1 illustrates an entire system for interworking with a local area wireless network and a wide area network in a vehicle according to an embodiment of the present invention.

The mobile terminal 100 communicates with a base station 300 of a wide area network through an IEEE802.16 interface for wireless communication, and communicates with a gateway device (G / W Gateway) 200 through an IEEE 802.11 interface. The mobile terminal 100 may use a dual interface of IEEE 802.11 and IEEE 802.16.

The mobile terminal 100 finds the presence of the G / W 200 through a periodic scan on the IEEE802.11 interface. In addition, the mobile terminal 100 may search for the G / W 200 when the user turns on the terminal or executes a network access command. When the mobile terminal discovers the G / W 200, it performs an IEEE802.11 network connection procedure with the G / W 200. The IEEE802.11 network connection procedure with the G / W 200 is shown in FIG.

The G / W 200 communicates with a base station 300 of a wide area network via an IEEE802.16 interface. The G / W 200 includes a short range wireless interface unit 210, a signaling management entity 220, and a wide area wireless interface unit 230.

The short range wireless interface unit 210 communicates with a mobile terminal located in a vehicle through a short range wireless interface. In this case, the short range wireless interface unit 210 includes a PHY that is responsible for the physical layer (PHY) operation of the IEEE802.11 interface and a MAC that is responsible for the media access control layer (MAC) operation of the IEEE802.11 interface.

The wide area air interface unit 230 communicates with a base station of a wide area network through a wide area air interface. The wide area wireless interface unit 230 includes a PHY for operating a physical layer (PHY) of an IEEE802.16 interface and a MAC for a media access control layer (MAC) operation of an IEEE802.16 interface.

The signaling management entity 230 manages signaling for interworking a near field interface (IEEE802.11 Interface) and the wide area interface (IEEE802.16 Interface). In addition, the signaling management entity 230 may perform a function of controlling the overall operation of the G / W 200.

On the other hand, the short-range wireless interface unit 210 receives the mutual authentication information used in the communication with the wide area network from the mobile terminal 100, the signaling management entity 220 receives the mutual authentication information, the base station of the wide area network ( The wide area wireless interface unit 230 may be controlled to communicate with 300. In addition, the signaling management entity 220 may control the wide area wireless interface unit 230 to perform an authentication process with the base station 300 of the wide area network using mutual authentication information.

In this case, the mutual authentication information may include at least one of information on an authentication method used by the mobile terminal in communication with the wide area network, a QoS related parameter, and a mutual authentication parameter. Detailed description of the mutual recognition information will be described later.

The signaling management entity 230 transmits a data frame through a different channel for each of a plurality of users, thereby providing a short range wireless interface unit 210 and a wide area wireless interface unit 230 to provide independent communication for each of the plurality of users. Can be controlled.

Here, the MAC header of the packet transmitted through the wide area wireless interface unit 230 may include information about how many users the data is packaged.

Existing mobile terminals communicating using the IEEE802.16 interface have a problem in that the data rate is drastically reduced due to errors such as interference in the cell edge region due to problems such as antenna performance limitation. According to an embodiment of the present invention, the mobile terminal 100 may improve communication quality through interworking with the G / W 200 equipped with the IEEE 802.16 high efficiency antenna 203 in the vehicle. The G / W 200 equipped with the high efficiency antennas 201 and 203 acquires the user information and the mutual authentication parameter through the mobile terminal 100 and the IEEE 802.11 interface, and uses the same to signal the IEEE 802.11 base station 300. It is possible to provide high quality service by performing communication connection through

2 illustrates an IEEE 802.11 network access procedure in a mobile terminal according to an embodiment of the present invention.

If the mobile terminal finds the G / W, it starts to enter the IEEE802.11 network in step S210.

When entering the network, the mobile station searches for a G / W having an IEEE802.11 interface through periodic scans (S220).

When the mobile station successfully scans the G / W, the mobile station sends a Join request message to the G / W. The G / W sends a response thereto to complete the join step (S230).

After the join step (S230), the mobile terminal and the G / W perform an authentication step (S240). In the authentication step (S240), authentication and key exchange are performed between the mobile terminal and the G / W. In this case, the key may be, for example, a key for authentication.

When the mobile terminal and the G / W successfully complete the authentication step (S240), the IEEE802.11 interface connection setting is completed by completing network registration with each other through the association step (S250) (S260).

The mobile terminal and the G / W are connected through the IEEE802.11 network connection procedure and carry parameters according to the mutual authentication method type for the IEEE802.16 connection. The mobile terminal passes the parameters for its authentication to the G / W. There are three types of mutual authentication methods of IEEE802.16, depending on the service provider.

1) X.509 digital certificate (when using EAP-TLS authentication method)

2) ID / Password (When using EAP-TTLS authentication method)

3) UICC (In case of using EAP-AKA authentication method)

The mobile terminal can transmit the authentication method information and the mutual authentication parameter of the above three authentication methods to the G / W through the IEEE802.11 data frame.

3 illustrates a soft switching signaling method of a local area network and a wide area network according to an embodiment of the present invention. The method shown in FIG. 3 may be performed by a mobile terminal.

In step S310, the mobile terminal searches for a gateway supporting a short range wireless interface in the vehicle. In this case, the mobile terminal may discover the presence of the G / W through manual operation of the user or periodic IEEE 802.11 scan.

In step S320, the mobile terminal transmits a join request message to the gateway.

In step S330, the mobile terminal waits to receive a response to the join request message. If the mobile station does not receive a response from the G / W for a certain time, the mobile terminal returns to the scan step and finds the presence of the G / W again.

When the mobile terminal receives the response to the join request message, the mobile terminal completes establishing a connection between the gateway and the near air interface in step S340. At this time, the short-range wireless interface connection setting includes the authentication step (S240) described in FIG. If the mobile station successfully receives a response to the authentication frame from the G / W, the mobile station sends an Association frame. If the mobile station does not receive a response within a certain time, the mobile station returns to the scan step and searches for the G / W again. . In addition, the mobile station sends an association frame to the G / W and waits for a response from the G / W for a predetermined time. If the G / W responds successfully during this time, the IEEE802.11 network connection between the mobile station and the G / W is completed. If not, the mobile terminal can return to the scan step to find the presence of the G / W.

Thereafter, in step S350, the mobile terminal transmits mutual authentication information for accessing the wide area air interface to the gateway. When the IEEE802.11 connection between the mobile terminal and the G / W is completed, the mobile terminal may transmit parameters related to mutual authentication to the G / W. This parameter may include the above-described certificate and QoS related parameters shown in FIG. 8.

In step S360, the mobile terminal waits to receive a switching complete message (or frame). In this case, when the mobile station does not receive a successful switching completion frame from the G / W, the mobile station may transmit a mutual authentication parameter and wait for reception of the switching completion frame.

When the mobile terminal receives the switching completion message (or frame), the mobile terminal communicates through the G / W in step S370. At this time, the mobile terminal can perform communication via G / W using the IEEE802.11 interface.

4 illustrates a soft switching signaling method of a local area network and a wide area network according to an embodiment of the present invention. The method illustrated in FIG. 4 may be performed by the gateway device 200, that is, G / W.

In step S410, the G / W receives a join request message from the mobile terminal through the short range wireless interface.

In step S420, the G / W transmits a response message to the join request message to the mobile terminal. That is, when the G / W receives the Join request frame from the mobile station through the IEEE802.11 interface, the G / W transmits a response frame thereto.

In step S430, the G / W completes the establishment of the short range wireless interface connection with the mobile terminal. At this time, the short-range wireless interface connection setting includes the authentication step (S240) described in FIG. That is, the G / W transmitting the Join response frame receives the authentication from the mobile terminal. When the authentication frame is successfully received, the response frame is transmitted. If the authentication frame is not received for a certain time, the join request frame is waited. In addition, the G / W sending a response to the authentication frame waits to receive the association frame. When the G / W successfully receives the frame, the IEEE802.11 connection is successfully established between the mobile station and the G / W by responding to the association frame. If the G / W does not receive the association from the mobile station for a certain time, the G / W waits to receive the join request frame.

In step S440, the G / W receives mutual authentication information for the wide area air interface connection from the mobile terminal. That is, when the IEEE802.11 connection is successfully established between the G / W and the mobile terminal, the G / W waits for reception of the mutual authentication parameter from the mobile terminal.

In step S450, the G / W attempts to enter the wide area network through the wide area wireless interface and performs an authentication procedure with the base station of the wide area network using the mutual authentication information. That is, when the G / W successfully receives the mutual authentication parameter through the IEEE802.11 interface, the G / W attempts to enter the network to the IEEE802.16 base station.

The G / W completes the wide area air interface connection setting in step S460. The detailed process of establishing a wide area wireless interface connection may be performed as follows. That is, in order to enter the IEEE802.16 network, the G / W may perform a downlink channel scan and synchronization step by receiving a downlink channel descriptor (DCD) message of the IEEE802.16 base station using the IEEE802.16 interface. In addition, if downlink channel scan and synchronization are successfully performed, the G / W may acquire a transmission parameter through UCD message analysis. Once the G / W has successfully acquired the transmission parameters, the G / W can modify the offset for the transmission output and time by executing Ranging.

If the G / W performs Ranging (10) successfully, the G / W negotiates basic capability with the IEEE802.16 base station.

After the basic capability 11 between the G / W and the IEEE802.16 base station is finished, the G / W and the IEEE802.16 base station exchange authentication and keys. In this case, the G / W may use a certificate received from the mobile terminal through an IEEE802.11 data frame.

When the G / W has successfully authenticated and exchanged the key through the certificate received from the mobile terminal, it performs registration (13) on the IEEE802.16 network.

When performing the registration procedure, the G / W may perform negotiation related to QoS by using the IEEE802.16 QoS related parameters as shown in FIG. 8.

After G / W registers with IEEE802.16 network (13), G / W's connection to IEEE802.16 network is completed by performing IP connection setup, TOD (Time of Day) setup, and operating parameter setup steps. do.

Thereafter, in step S470, the G / W transmits a switching complete message to the mobile terminal through a short range wireless interface. That is, when the connection setup between the G / W and the IEEE802.16 base station is successful, the G / W transmits a switching completion message to the mobile station using the IEEE802.11 interface. Signaling interworking is performed between the IEEE802.16 base station and the mobile station.

When the mobile station terminates the connection, it transmits a disassociation frame to the G / W through the IEEE802.11 interface. The G / W receiving the disconnect frame may terminate the IEEE802.11 connection and terminate the IEEE802.16 connection.

FIG. 5 illustrates the method illustrated in FIG. 4 in more detail.

Referring to FIG. 5, steps S501 to S513 are performed through an IEEE 802.11 interface. In addition, steps S535 and S357 are performed through the IEEE 802.11 interface.

Referring to FIG. 5, steps S515 to S533 are performed through the IEEE 802.16 interface.

Each step illustrated in FIG. 5 corresponds to the detailed description of FIG. 4 and the detailed description will be omitted.

In addition, in the embodiments of the present invention, when the mobile terminal terminates the connection, a disassociation frame is transmitted to the G / W through the IEEE802.11 interface. The G / W receiving the disconnect frame may terminate the IEEE802.11 connection and terminate the IEEE802.16 connection. That is, an embodiment of the present disclosure may further include disconnecting the short range wireless interface and the wide area wireless interface when receiving a disconnection frame from the mobile terminal.

In one embodiment of the present invention, the G / W can be connected to a plurality of mobile terminals through the IEEE802.11 Interface. At this time, the G / W manages a large number of CIDs, and this enables the independent communication for each user by transmitting data frames to different channels for each user. That is, an embodiment of the present invention may further include providing independent communication for each of the plurality of users by transmitting a data frame to a base station of a wide area network through a different channel for each user. Can be.

G / W can also package a large number of user data for each service type and send it to the base stations of the wide area network. G / W may cause problems such as charging when packaging and transmitting several data when communicating with IEEE802.16 base station. To solve this problem, the MAC header can be extended. That is, according to an embodiment of the present invention, after the establishment of the wide-area air interface connection is completed, the MAC header of the packet transmitted through the wide-area air interface includes information on how many users have been packaged. can do.

FIG. 6 shows a MAC header format used in a G / W according to the prior art, and FIG. 7 shows a MAC header format used in a G / W according to an embodiment of the present invention.

The existing MAC header has two reserved fields 610 and 620 and is set to zero. Among these, the MAC header can be extended by utilizing the first reserved field (610, 9th bit). If the 9th Reserved field is set to 1, MAC header extension for multiple access information is performed. The MAC header extension may be represented as shown in FIG. 7, and a portion indicated by reference numeral 730 is an expanded MAC header. In this case, it indicates that the fields corresponding to the reference numerals 710 and 720 are set to one.

The Extend LEN field indicates how many users have been packaged, followed by the additional user's MAC header to display multiple user information.

Meanwhile, an embodiment of the present invention includes a procedure in which a mobile terminal interrupts communication with a G / W and independently communicates with a wide area network.

That is, while the mobile terminal 100 is connected to the G / W 200 and the communication is in progress, the mobile terminal 100 stops communication with the G / W 200 as it moves away from the G / W 200, and independently of the IEEE802.16 Communicate with the base station. In this case, the mobile terminal 100 may recognize a situation of a communication link with the G / W 200 by measuring signal strength such as an SINR value. At this time, if the quality of the communication link becomes smaller than the reference value by setting a certain threshold value, the mobile terminal determines that it is far from the G / W and seamlessly performs the termination procedure with the G / W. In the termination procedure, when the mobile station transmits a connection termination message to the G / W via the IEEE802.11 interface, the G / W and the mobile station synchronize the clock time through the synchronization and negotiate the switching time. At this time, the G / W transmits the authentication parameter used to communicate with the IEEE802.16 base station to the mobile station. Parameters for IEEE802.16 communication authentication are as follows.

1) MAC header

The MAC header includes CID and MAC Address information, and the MAC header format is shown in FIG.

2) EKS (Encryption Key Sequence)

It is used for data frame encryption and includes a Traffic Encryption Key (TEK) and an Initialization Vector (IV).

When the switching time comes, the G / W terminates communication with the IEEE802.16 base station, and the mobile terminal directly connects with the IEEE802.16 base station without the G / W.

The method according to the present invention can be implemented in the form of program instructions that can be executed by various computer means and recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

Claims (17)

A short range wireless interface unit configured to communicate with a mobile terminal located in a vehicle through a short range wireless interface;
A wide area air interface unit for communicating with a base station of a wide area network through a wide area air interface; And
And a signaling management entity managing a signaling for interworking the short range wireless interface with the wide area wireless interface.
The method of claim 1,
And the mobile terminal searches for seamless signaling interworking devices of the local area network and the wide area network through periodic scans.
The method of claim 1,
The short-range wireless interface unit receives mutual authentication information used by the mobile terminal in communication with the wide area network from the mobile terminal,
And when the signaling management entity receives the mutual authentication information, controls the wide area radio interface to communicate with a base station of the wide area network.
Gateway device.
The method of claim 3,
Wherein the mutual authentication information includes information on an authentication method used by the mobile terminal in communication with the wide area network, QoS related parameters, and mutual authentication parameters.
The method of claim 3,
And the signaling management entity controls the wide area radio interface to perform an authentication process with a base station of the wide area network using the mutual authentication information.
The method of claim 1,
The signaling management entity controls the short-range wireless interface unit and the wide-area wireless interface unit to transmit a data frame through a different channel for each of a plurality of users, so that independent communication is provided for each of the plurality of users. Gateway device.
The method of claim 1,
And a MAC header of a packet transmitted through the wide area air interface unit contains information on how many users have been packaged.
Searching for a gateway supporting a near air interface in a vehicle;
Sending a join request message to the gateway and receiving a response to the join request message;
Completing a short-range wireless interface connection with the gateway;
Communicating mutual authentication information for a wide area air interface connection to the gateway; And
Receiving a switching complete message from the gateway to a wide area wireless interface.
The method of claim 8,
If the quality of the communication link with the gateway is less than a threshold, further comprising releasing the communication connection with the gateway;
Soft Switching Signaling for Local Area Networks and Wide Area Networks.
10. The method of claim 9,
The step of releasing the communication connection with the gateway,
Sending a connection termination message to the gateway through a short range wireless interface; And
Receiving from said gateway a communication parameter used in communication with a wide area network,
Soft Switching Signaling for Local Area Networks and Wide Area Networks.
The method of claim 8,
The mutual authentication information includes information on an authentication method used by the mobile terminal in communication with the wide area network, QoS related parameters, and mutual authentication parameters.
Soft Switching Signaling for Local Area Networks and Wide Area Networks.
The method of claim 8,
Searching for a gateway that supports a near air interface in the vehicle may include:
Characterized in that performed through a periodic scan, or is initiated by the user's operation,
Soft Switching Signaling for Local Area Networks and Wide Area Networks.
Receiving a join request message from the mobile terminal through a short range wireless interface and transmitting a response message to the join request message to the mobile terminal;
Completing a short range wireless interface connection with the mobile terminal;
Receiving mutual authentication information for a wide area air interface connection from the mobile terminal;
Attempting entry into a wide area network through a wide area wireless interface and performing an authentication procedure with a base station of the wide area network using the mutual authentication information;
Completing the wide area air interface connection setup; And
Transmitting a switching complete message to the mobile terminal through the short range wireless interface;
Soft Switching Signaling for Local Area Networks and Wide Area Networks.
The method of claim 13,
The mutual authentication information includes information on an authentication method used by the mobile terminal in communication with the wide area network, QoS related parameters, and mutual authentication parameters.
Soft Switching Signaling for Local Area Networks and Wide Area Networks.
The method of claim 13,
Providing independent communication for each of the plurality of users by transmitting a data frame to a base station of the wide area network through a different channel for each of the plurality of users.
Soft Switching Signaling for Local Area Networks and Wide Area Networks.
The method of claim 13,
After the wide-area air interface connection setting is completed, the MAC header of the packet transmitted through the wide-area air interface includes information about how many users the data is packaged.
Soft Switching Signaling for Local Area Networks and Wide Area Networks.
The method of claim 13,
When receiving a disconnection frame from the mobile terminal, disconnecting the short range wireless interface and the wide area wireless interface;
Soft Switching Signaling for Local Area Networks and Wide Area Networks.

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