KR100423147B1 - System of wireless communication for multimedia service and method thereof - Google Patents

Abstract

The present invention relates to a wireless access device and method for a multimedia service for providing a multimedia service in-house or out-of-house using a wired, internet and mobile phone in an environment such as a small office or a home office.

To this end, the present invention performs a voice service function by processing a signal transmitted to and received from an authorized mobile terminal in a service right for using a time-division duplex-based wireless private network, and performs external network, Internet network, And a wireless access device for accessing a mobile telephone network to perform a data service function.

Accordingly, the present invention provides a mobile phone compatible with the time division duplex-based or other wireless access method using the FDD scheme for the IMT-2000, so that subscribers can connect to extension, internet, wired and mobile telephone network signals regardless of where they are in the private area. In addition to the service, it provides the effect that you can use the Internet service economically and conveniently.

Description

Wireless access device and method for multimedia service {System of wireless communication for multimedia service and method

The present invention relates to a wireless access device and method for a multimedia service, and more particularly, to construct a wireless private network using a time division duplex (TDD) method in a limited area by using one public communication mobile phone, The present invention relates to a wireless access device and method for multimedia service that can receive voice calls and Internet services.

As mobile communication services are widely used, transmission and reception services of voice and data services are being used in a public area using mobile communication networks, and attempts to provide services to the same mobile terminals are continuously made in private areas such as offices.

1 is a diagram showing the configuration of a voice and data service performing system using a mobile communication repeater according to a first embodiment of the prior art.

As shown in FIG. 1, a mobile communication repeater 11 controlled by a mobile communication base station or a control station is installed to extend a service area of a mobile communication network to an indoor area such as an office or a basement having a poor radio wave environment.

Accordingly, the mobile communication repeater 11 may be used to provide a mobile call terminal 12 capable of a voice call, a mobile data terminal 13 connected to a portable computer, and a portable computer 14 having a portable data terminal function. Voice and data services will be provided.

However, when the voice and data service using the mobile communication repeater 11 is installed in an office or the like, not only all the communication occurring inside the office, but also the wired telephone network incoming call will be routed through the mobile communication network. There is a problem that it is not suitable as a communication means to replace telephone and information exchange.

In addition, voice and data services using the mobile communication repeater 11 do not provide high-speed information at a low service fee, and there is a problem in that it is uneconomical when installed in an environment such as a small office or a home office.

2 is a diagram illustrating a configuration of a system for performing voice and data services using a wired transmission medium according to a second embodiment of the prior art.

The second embodiment is a system for efficiently accommodating information transmission speed and frequency of use in accordance with an increase in information retrieval, sharing, and electronic payment in an office environment.

That is, as shown in Figure 2, in order to connect to the external wired telephone network and the Internet network to install a line to the inside of the office with a wired transmission medium such as optical cable or T1 / E1 trunk.

The indoor subscriber using the wired telephone 22 or the communication terminal 23 is connected to an external wired telephone network and the Internet through a network matching device 21 such as a wired network or a high-speed data network, or a LAN. Receive data services.

However, in the second embodiment, the trouble of having to perform the telephone and LAN cable work again every time before the office, the new or additional installation of the communication device, the relocation of the office or the communication device occurs, and in the small office environment, the optical cable or T1 The cost of using / E1 trunks is so high that ADSL or cable modems are used, but there is a problem that many people cannot share them.

Next, FIG. 3 is a diagram illustrating a configuration of a system for performing voice and data services using indoor wireless communication according to a third embodiment of the prior art.

As shown in FIG. 3, in the third embodiment, a Bluetooth-based short range wireless communication scheme and a wireless LAN such as IEEE802.11 series and HyperLAN are wirelessly fast in a public area environment such as an office. Get data services.

In the third embodiment, similarly to the first embodiment, a small base station 31 is installed indoors, and the data terminal 33 and the portable computer 34 are connected to the call terminal 32 instead of the wired LAN. To provide.

However, the third embodiment has a problem in that it is not possible to provide a voice service through interworking of an external telephone network for connection of a local telephone, a wired telephone and a mobile telephone.

Therefore, the voice and data service technology can be serviced through a private communication network in a private area with one mobile terminal, and the service must be developed from the outside through a public communication network.

The present invention is to solve the above problems, an object of the present invention is to provide services such as voice calls, e-mail, information retrieval, in-house or off-site using a wired, Internet and mobile phone in an environment such as a small office or home office The present invention provides a wireless access device and method for a multimedia service for constructing a wireless private network using a time division duplex method in a limited area by using a single cellular phone for public communication.

In addition, an object of the present invention, the wireless communication apparatus and method for the wireless communication using the wireless private network using the wireless connection device and the wireless communication device and method for providing voice and data services with the external network can be provided wirelessly. To provide.

1 is a diagram showing the configuration of a voice and data service performing system using a mobile communication repeater according to a first embodiment of the prior art.

2 is a diagram illustrating a configuration of a system for performing voice and data services using a wired transmission medium according to a second embodiment of the prior art.

3 is a diagram illustrating a configuration of a system for performing voice and data services using indoor wireless communication according to a third embodiment of the prior art.

4 is a diagram illustrating a configuration of a wireless access device for multimedia service according to an embodiment of the present invention.

5 is a diagram illustrating a structure of a general time division duplex scheme for IMT-2000.

6 is a flowchart illustrating a wireless access method for a multimedia service according to an embodiment of the present invention.

FIG. 7 is a flowchart illustrating a system operation when an incoming voice service is requested by an origination of a time division duplex mobile terminal.

8 is a flowchart illustrating a process of providing a voice service between incoming and outgoing mobile terminals.

9 is a flowchart illustrating a process of providing a voice service between a mobile terminal and a wired telephone network subscriber.

10 is a flowchart illustrating an operation of a system when an outgoing voice service request is made.

FIG. 11 is a flowchart illustrating a system operation when a data service is requested by an origination of a time division duplex mobile terminal.

12 is a flowchart illustrating a data service providing process between an incoming and outgoing mobile terminal.

13 is a flowchart illustrating a data service providing process between a mobile terminal and a wired telephone network subscriber.

14 is a flowchart illustrating a system operation when a data service request from a valid mobile terminal in a wireless private network to a wired telephone network is requested.

The wireless access device for a multimedia service of the present invention for realizing the above object is a channel management apparatus for transmitting and receiving mobile terminal and subscriber related information, access and call processing of the mobile terminal while initializing the mobile terminal. A wired network matching device for converting signals transmitted and received to a mobile terminal of a time division duplex method connected to an external network, and connected to the channel management device and a wired network matching device to manage call processing and subscriber registration and status. A system control unit for managing and controlling each unit, and a system control unit for managing and controlling each unit while managing registration and status of subscribers.

The channel management apparatus includes a common control channel unit for transmitting a call and control channel for transmitting a synchronization channel and various control information so that a time division duplex type mobile terminal in a service right is initialized, and a location registration of a mobile terminal that has been moved into a service right. An access channel receiving unit for receiving request and origination signals, and a call channel bank unit for processing subscriber transmit / receive signals in a service right.

The access channel receiving unit is composed of a series of base station modulators for receiving and processing an initial transmission signal of a mobile terminal existing in a service right.

The call channel bank unit is composed of a series of base station modulation / demodulation channels for processing traffic information for a mobile terminal existing in a service right.

The system control unit may include a system initialization function, a call processing function, a subscriber authentication / registration / management function, a configuration and operation setting function of a wire network matching device, a time division duplex operation function, a download function, a change function during operation, and a system failure. Handles control functions, including diagnostics and management functions.

On the other hand, the wireless access method for a multimedia service of the present invention is a) time division duplex-based wireless private network within the service area for use in a mobile terminal and time-division duplex type of voice or data service function with the internal or external network Connecting to a wireless access device to be provided, and b) a mobile terminal operable in a wireless private network by changing a mode of a user of the mobile terminal includes initializing system information, registering a location, calling voice service, and data service. And setting and operating to perform the control operation.

In the step a), when the user's mode is changed, the time division duplex based mobile terminal used for public mobile communication is operated by the user in a private network operation mode by a manual operation so that the mobile terminal operates the system. Recognize and perform registration and authentication.

In the step a), if the user performs manual operation to operate the time division duplex-based mobile terminal used for public mobile communication in the wireless private network when the user changes the mode, the mobile terminal after the user operation through the public network A message is sent to automatically transfer all call services to the representative number of the private network, and when the acknowledgment message is received, the message is switched to the private network operation mode.

In step b), when providing a voice service function,

Iii) receiving a request signal for an incoming voice service to a subscriber in a wireless private network; ii) determining whether the subscriber is currently in a waiting state after checking whether the subscriber is valid in the wireless access device; and iii) in a waiting state. Converting an outgoing message into an incoming message and transmitting a call signal to a call channel in a corresponding wireless private network; and iii) if not in a waiting state, determining that the call is in a busy state and converting the busy signal into a wired or wireless private network. Transmitting to another mobile terminal.

In the step iii), when the incoming voice service request signal is received by the time division duplex mobile terminal,

The mobile terminal of the time division duplex method transmits a response signal to an access channel when receiving an incoming message, and if a response signal is transmitted through the access channel, sending a ring signal to the calling terminal under control of the radio access apparatus. When the called party hooks off, the voice communication signal recovered by the demodulation and channel encoding is passed as is, thereby opening a communication path between the two terminals.

In the step iii), when the incoming voice service request signal is received from the wired network matching device for connection with an external network,

The mobile terminal of the time division duplex method transmits a response signal to an access channel when receiving an incoming message, and when a response signal is transmitted through the access channel, sends a ring signal to a subscriber's wired telephone network subscriber under the control of the wireless access device. Sending, and when the called party hooks off, the mobile terminal and the wired telephone network are converted by the time division duplex type voice signal and the voice signal in the wired network using a wired network matching device for connection with an external network. Opening a call path between subscribers.

In step b), when providing a voice service function,

Iii) the wireless access device receiving an outgoing voice service request signal from a mobile terminal in a wireless private network to an external network, ii) confirming the validity of subscribers of the mobile terminal in the wireless access device, and connecting to an external network. Transmitting the number received from the wire network matching device to the external network for the external network; i) transmitting a busy signal when receiving a busy signal from the external network, and transmitting a ring signal to the mobile terminal when receiving a busy signal. Wireless connection method for a multimedia service, characterized in that.

In the step iii), when the wired subscriber of the external network hooks off, the wired network matching device enables voice service between the wired subscribers through conversion between a time division duplex voice signal and an external network voice signal.

In step b), when providing a data service function,

Iii) receiving a data service request signal to a subscriber in a wireless private network; ii) after confirming the validity of the subscriber in the wireless access device, the system converts an outgoing message into an incoming message in an operating state and calls into the corresponding wireless private network. Transmitting a signal.

In step ii), when the data service request signal is received by the origination of the time division duplex mobile terminal,

When the mobile terminal receives an incoming message, transmitting a response signal to a control channel on an access channel or a call channel, if the response signal is transmitted through a control channel, transmitting a connection confirmation signal to a calling terminal by a wireless access device; And performing the data service function between the two mobile terminals by passing the data information signal recovered through the modulation and demodulation and channel coding used in the time division duplex scheme.

In step ii), when a data service request signal is received from a wired data network to a subscriber in a wireless private network through a wired network matching device for access to an external network,

When the mobile terminal receives an incoming message, transmitting a response signal to a control channel on an access channel or a call channel, and when the response signal is transmitted through a control channel, sending a connection confirmation signal to a wired data network subscriber of the other party. The wired network matching device includes a step of performing a data service function between a mobile terminal and a wired subscriber by converting and transferring data into an information format suitable for information exchange between two terminals.

In step iii), when a data service request signal is received from a valid mobile terminal in a wireless private network to a wired telephone network,

Transmitting the received number or IP address from the wired network matching device for the connection to the external network, if a response signal is sent from the other side of the wired telephone network, setting up a call for data transmission, the wired network matching device is Performing a data service function between the mobile terminal and the wired subscriber by converting and transferring data into an information format suitable for information exchange between the two terminals.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 4 is a diagram showing the configuration of a wireless access device for a multimedia service according to an embodiment of the present invention.

As shown in FIG. 4, the wireless access device 200 is a small office or home office (SOHO) using a time division duplex (TDD) type wireless access standard for IMT-2000. In the environment, a wireless private network is established to provide extension voice and data exchange and voice and data services with an external network, and processes signals transmitted and received to and from mobile terminals 110, 120, and 130 within a service right of the wireless private network. While maintaining the subscriber information of the mobile terminal (110, 120, 130) to be connected to an external network, such as an external wired network / Internet network / mobile telephone network.

5 illustrates a structure of a general TDD scheme for IMT-2000. Referring to this, the TDD scheme uses a time division duplex technique capable of transmitting and receiving at one frequency.

Here, TDD uses a time division multiple access technique shared by multiple users by dividing a 10msec frame into 15 time slots, and an IMT using a code division multiple access technique for simultaneous use by multiple users in one time slot. -2000 is one of the wireless access standards.

The TDD scheme has an advantage of efficiently providing a data service having an asymmetry such as the Internet in terms of frequency by flexibly determining the direction of transmission and reception for each slot.

Meanwhile, the wireless access device 200 initializes the mobile terminals 110, 120, and 130, and transmits / receives the subscriber related information with the mobile terminals 110, 120, and 130, and accesses the mobile terminal. (210), a wired network matching device (220) for converting signals transmitted and received to and from the TDD-type mobile terminals (110, 120, 130) connected to an external network, and manages call processing and registration and status of subscribers. And it includes a system control unit 230 for managing and controlling each unit.

Here, the channel management apparatus 210 transmits a call and control channel for transmitting a synchronization channel and various control information so that the TDD type mobile terminals 110, 120, and 130 in a service right are initialized. ), An access channel receiving unit 212 for receiving a location registration request and an originating signal of the mobile terminals 110, 120, and 130 that have been moved into the service right, and a call channel bank unit 213 for processing subscriber transmission / reception signals in the service right. More).

In this case, the TDD scheme is applied to the transmission / reception signal processing between the common control channel unit 211, the access channel receiver 212, the call channel bank unit 213, and the mobile terminals 110, 120, and 130.

In addition, the common control channel unit 211 is a synchronization channel signal for notifying the service area of the radio access device 200 and the TDD-type mobile terminals (110, 120, 130) in the service right and the system information of the base station to initialize the system It performs a function of transmitting a signal of a common control channel (control channel and call channel) having call information which is within a service right and transmits an incoming signal to a subscriber registered in the radio access device 200.

In addition, the access channel receiving unit 212 is the first originating signal of the mobile terminal existing in the service right of the TDD-based wireless access device 200, that is, the service area registration signal, call signal, response signal for the call signal, and other call channels If not, it consists of a series of base station demodulators that receive and process control signals.

The call channel bank unit 213 is composed of a series of base station modulation / demodulation channels for processing a transmission / reception signal for a mobile terminal existing within a service right of the TDD-based wireless access device 200.

On the other hand, the system controller 230 is a system and block initialization function, call processing function, subscriber authentication / registration / management function of the wireless access device 200, configuration and operation setting function of the wire network matching device, TDD method operation function, various It handles control functions, including changes to download and operation of software, and system- and block-specific fault diagnosis and management.

Hereinafter, the control function of the system controller 230 will be described in more detail.

Initialization function for each system and block is a function to check system components and to test whether each component operates normally when initially installing equipment or applying new power.

After the system initialization is completed, various software download and operation change functions sequentially download the information necessary for operation and operation for each component block, and update operation information for each element when it is deemed necessary by the user or the system even during operation. Or to change the function.

The call processing function is a function of transmitting and receiving control information and protocol necessary for the initial or end of providing voice and data services in or out of the network.

The subscriber registration / management / authentication function is a function of managing and authenticating subscriber information when the subscriber information is registered in order to determine whether the subscriber who wishes to receive the service in the wireless access apparatus 200 is legitimate.

The configuration and operation setting function of the wire network matching device 220 is a function of setting system components in order to link the ADSL or cable modem signal with the TDD system, and setting an operation method necessary for data conversion and protocol matching.

The TDD operation function is a function for managing and providing operation information, a physical layer, and a protocol required by a base station system or more to provide a service to a mobile terminal operating in the IMT-2000 TDD method.

System and block error diagnosis and management function checks the operation status of the device periodically during operation, isolates the part where failure occurred in case of failure, reports to the operator, and detects the signal of the same type of device operating in the adjacent location. This function provides data for operating the TDD system.

On the other hand, the wire network matching device 220 is responsible for interfacing the high-speed modem of the wired network for wired telephone networks and Internet data services, that is, ADSL and cable modem with the TDD scheme.

Accordingly, the wired network matching device 220 is a voice encoding function for transmitting a pulse width modulated (PCM) signal or an analog signal received through a wired telephone line in a TDD scheme, a digital subscriber line or an optical cable to provide a voice service. It performs the function of transmitting / receiving signals of the data network and the data conversion function for transmitting this data by TDD method. In addition, the wired network matching device 220 performs a function of transmitting voice or data service between subscribers in the wireless private network.

Referring to the operation of the embodiment according to the present invention configured as described above are as follows.

6 is a flowchart illustrating a wireless access method for a multimedia service according to an embodiment of the present invention.

As shown in FIG. 6, the wireless access device 200 is a TDD-based mobile terminal 110, 120, 130 to provide a voice or data service function with an extension or external network within a service right for using a TDD-based wireless private network. Is connected to the external network (S1).

The mobile terminal operating in the wireless private network among the TDD type mobile terminals for IMT-2000 complies with the wireless connection standard of the TDD type for the IMT-2000. However, the wireless access standard supports the handover to the wireless private network. Since there is no regulation, the user changes the mode to allow the mobile terminal to perform handover operation in the wireless private network (S2).

Here, handover refers to a function in which a mobile station is automatically tuned to a new call channel of a neighboring base station and continuously maintained when the mobile terminal in a call state moves out of the corresponding base station service area to a neighboring base station service area.

At this time, when the user changes the mode, in order for the TDD-based mobile terminal used for public mobile communication to operate in the wireless private network, the user switches to the private network operation mode through manual operation so that the mobile terminal is recognized as a new system and registered and authenticated. Do this.

On the other hand, if the user performs a manual operation in order for the TDD-based mobile terminal used for public mobile communication to be operated in the wireless private network when the user changes the mode, the user's operation is performed after the user's operation through the public network before the operation mode is switched to the private network. A message is transmitted to automatically transfer all call services to the mobile terminal to the representative number of the private network, and when the acknowledgment message is received, the message is switched to the private network operation mode.

In this way, the mobile terminal operable in the wireless private network by the user is set and operated such that system information provided by the wireless private network performs control operations including initialization, location registration, call voice service, and data service.

FIG. 7 is a flowchart illustrating a system operation when an incoming voice service is requested by an origination of a TDD mobile terminal.

As shown in Fig. 7, the TDD mobile terminal transmits an incoming voice service request signal to the subscriber in the wireless private network through the access channel and receives it to the access channel receiving unit 212 (S11).

Then, the system controller 230 receives the incoming voice service request signal through the access channel receiver 212 and checks the validity of the subscriber (S12), and if the subscriber is a valid subscriber, whether the subscriber is in a waiting state or in a call state. (S13)

In the waiting state, the system controller 230 converts the outgoing message into an incoming message and transmits a call signal to the call channel of the common control channel unit 211 in the corresponding wireless private network (S14, S15).

However, in the busy state, the system controller 230 transmits the busy signal to the call channel for transmitting to the other mobile terminal in the wired network or the wireless private network. (S16, S17)

8 is a flowchart illustrating a process of providing a voice service between an incoming and outgoing mobile terminal.

Referring to FIG. 8, after receiving an incoming message, the TDD mobile terminal transmits a response signal to the access channel receiver 212 (S21 and S22), and the system controller 230 passes through the access channel receiver 212. When the response signal is transmitted, a ring signal is sent to the calling mobile terminal. (S23, S24)

Then, when the called party hooks off (S25), the voice service between the two mobile terminals opens the communication path between the called and calling mobile terminals by passing the compressed voice signal recovered through the modulation and demodulation and channel coding used in the TDD scheme. It is provided as (S26).

On the other hand, when the system controller 230 receives the subscriber incoming voice service request signal in the wireless private network from the wire network matching device 220 through the wired telephone network, the system controller 230 operates in the same manner as the flowchart shown in FIG. However, the incoming message reception process proceeds as shown in FIG.

9 is a flowchart illustrating a process of providing a voice service between a mobile terminal and a wired telephone network subscriber.

After receiving the incoming message, the TDD mobile terminal transmits a response signal to the access channel receiver 212 (S31 and S32), and the system controller 230 transmits the response signal through the access channel receiver 212. The ring signal is sent to the other party's wired telephone network subscriber (S33, S34).

When the called person hooks off (S35), the voice service between the mobile terminal and the wired telephone network subscriber converts the voice compressed signal used in the TDD scheme from the wired network matching device 220 to the PCM or analog voice signal used in the wired telephone network. By providing a call to each other (S36).

10 is a flowchart illustrating an operation of a system when an outgoing voice service request is made.

As shown in FIG. 10, the system controller 230 receives an outgoing voice service request signal from a mobile terminal of a wireless private network to a wired telephone network (S41).

The system controller 230 checks whether the subscriber is valid and transmits the number received from the wired network matching device 220 to the wired telephone network when the subscriber is a valid subscriber (S42, S43).

It is checked whether a busy signal is received in the wired telephone network (S44), and when a busy signal is received, the busy signal is transmitted to the mobile terminal (S45). However, when the reception wait state is confirmed in the wired telephone network, the ring signal is transmitted to the mobile terminal (S46).

At this time, when the subscriber of the wired telephone network hooks off, in order to provide voice service between the subscribers of the wired telephone network, the communication channel between the mobile terminal and the wired telephone network subscriber is opened, and the voice compression signal used in the TDD method and the PCM used in the wired telephone network Alternatively, conversion between analog voice signals is performed in the wired network matching device 220.

FIG. 11 is a flowchart illustrating a system operation when a data service is requested by an origination of a TDD type mobile terminal.

Referring to FIG. 11, a data service request signal is transmitted through a TDD type mobile terminal to a subscriber in a wireless private network through an access channel receiver 212. (S51)

The system controller 230 checks the validity of the subscriber when the data service request signal is received through the access channel receiver 212 (S52). In the case of a valid subscriber, the system controller 230 operates regardless of the reception waiting state or the busy state. In the state, the outgoing message is converted into the incoming message, and the call signal is transmitted to the call channel of the common control channel unit 211 in the corresponding wireless private network or the dedicated control channel on the busy channel (S54, S55).

12 is a flowchart illustrating a data service providing process between an incoming and outgoing mobile terminal.

As shown in Fig. 12, a TDD mobile terminal receives an incoming message and transmits a response signal to a control channel on an access channel or a call channel (S61, S62).

When the response signal of the mobile terminal is transmitted to the system control unit 230 (S63), the system control unit 230 transmits a connection confirmation signal to the calling mobile terminal (S64). Then, the data service between the two mobile terminals in the TDD scheme It is provided in such a manner as to pass the data information signal reconstructed through the modulation and demodulation and channel coding to be used as it is (S65).

On the other hand, when the system controller 230 receives a data service request signal from the wired data network to the subscriber in the wireless private network through the ADSL or cable modem from the wired network matching device, the system controller 230 is similar to the flowchart shown in FIG. After confirming the validity of the subscriber, the subscriber transmits a call signal to the call channel of the common control channel unit 211 whether the subscriber is in a waiting state or on a call.

13 is a flowchart illustrating a data service providing process between a mobile terminal and a wired telephone network subscriber.

As shown in Fig. 13, a TDD mobile terminal receives an incoming message and transmits a response signal to a control channel on an access channel or a call channel (S71, S72).

When the response signal of the mobile terminal is transmitted to the system controller 230 (S73), the system controller 230 transmits a connection confirmation signal to the wired telephone network subscriber. (S74) Then, the data service between the two mobile terminals is wired network matching device. In operation 220, data is provided by converting the data into an information format of a suitable form so that the information is exchanged between the two terminals.

14 is a flowchart illustrating a system operation when a data service request from a valid mobile terminal in a wireless private network to a wired telephone network is requested.

Referring to FIG. 14, when the system controller 230 receives a data service request signal (S81), the system controller 230 transmits a number or an IP address received from the wired network matching device to the wired telephone network (S82).

On the other hand, when a response signal is transmitted from the other side of the wired telephone network, a call for data transmission is established. (S83, S84) And, the data service between the mobile terminal and the wired telephone network subscriber is information between the two terminals in the wired network matching device 220. Is provided in such a manner as to convert the data into an information format of a suitable form so that S is exchanged (S85).

The drawings and detailed description of the invention are merely exemplary of the invention, which are used for the purpose of illustrating the invention only and are not intended to limit the scope of the invention as defined in the appended claims or claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

The wireless access device and method for multimedia service according to the present invention establishes a wireless private network through a TDD-based wireless access device directly connected to a wired telephone network or an internet network, and performs IMT between authorized subscribers in a service area provided by the wireless access device. It is possible to make voice call and data exchange with the TDD type wireless access standard for 2000 and to provide voice and data service with external network.

Accordingly, the present invention provides a mobile phone combined with another wireless access method using a TDD-based or FDD scheme for IMT-2000, thereby allowing subscribers to provide extension, internet, wired, and mobile telephone network call services regardless of location. In addition, the Internet service can be used economically and conveniently.

Claims (18)

In the wireless access device for a multimedia service connected to a mobile terminal and an external network through a network, A channel management device for initializing and transmitting the mobile terminal and subscriber related information, and access and call processing of the mobile terminal; A wired network matching device connected to an external network and performing a conversion function of a signal transmitted and received to a mobile terminal of a time division duplex method; And A system control unit connected to the channel management device and the wire network matching device to manage and control each part while managing call processing and registration and status of subscribers. Wireless access device for multimedia service comprising a. delete The method of claim 2, The channel management device, A common control channel unit for transmitting a call and control channel for transmitting a synchronization channel and various control information such that a time division duplex mobile terminal in a service right is initialized; An access channel receiver configured to receive a location registration request and an origination signal of a mobile terminal that has been moved into a service right; And Call channel bank unit for processing subscriber transmit / receive signal in service right Wireless access device for multimedia service comprising a. The method of claim 3, wherein The access channel receiver, A wireless access device for a multimedia service, comprising: a series of base station modulators for receiving and processing an initial outgoing signal of a mobile terminal existing within a service right. The method of claim 3, wherein The call channel bank unit, And a series of base station modulation / demodulation channels for processing traffic information for a mobile terminal existing within a service right. The method of claim 2, The system control unit, System initialization function, call processing function, subscriber authentication / registration / management function, wire network matching device configuration and operation setting function, time division duplex type operation function, various information download and operation change function, system failure diagnosis and management function Wireless access device for multimedia service, characterized in that for processing a control function comprising. a) a time division duplex mobile terminal and an external network in a service right for using a time division duplex-based wireless private network are connected to a wireless access device to provide a voice or data service function with an internal network or an external network; And b) setting and operating a mobile terminal operable in a wireless private network by changing a mode of a user of the mobile terminal to perform control operations including initializing system information, registering a location, calling voice service, and data service; Wireless access method for a multimedia service comprising a. The method of claim 7, wherein In step a), When the user changes the mode, the time division duplex-based mobile terminal used for public mobile communication operates in a wireless private network so that the user switches to the private network operation mode through manual operation so that the mobile terminal recognizes the system and registers and authenticates. Wireless access method for a multimedia service, characterized in that performing. The method of claim 7, wherein In step a), When the user changes the mode, if the user performs manual operation to operate the time division duplex-based mobile terminal used for public mobile communication in the wireless private network, all call services received by the mobile terminal after the user operation through the public network Transmitting a message to automatically transfer the call to a representative number of a private network, and when the acknowledgment message is received, the mobile station switches to the private network operation mode. The method of claim 7, wherein In step b), When providing voice service function, Iii) receiving a request signal for an incoming voice service to a subscriber in a wireless private network; Ii) determining, by the wireless access device, whether the subscriber is valid and determining whether the subscriber is currently in a standby state; Iii) converting an outgoing message into an incoming message and transmitting a call signal to a call channel in a corresponding wireless private network in a waiting state; And Iii) determining that the call is in a busy state and transmitting the busy signal to another mobile terminal in a wired network or a wireless private network when the call is not in a waiting state. The method of claim 10, In the step iii), When an incoming voice service request signal is received by the time division duplex mobile terminal originating, Transmitting a response signal to an access channel when the mobile terminal of the time division duplex method receives an incoming message; If a response signal is transmitted through the access channel, sending a ring signal to a calling terminal under control of the radio access apparatus; When the called party hooks off, opening the communication path between the two terminals by passing the reconstructed speech compressed signal through the modulation and demodulation and the channel encoding as it is. Wireless access method for a multimedia service comprising a. The method of claim 10, In the step iii), When the incoming voice service request signal is received from the wired network matching device for connection with the external network, Transmitting a response signal to an access channel when the mobile terminal of the time division duplex method receives an incoming message; If a response signal is transmitted through the access channel, sending a ring signal to the other party's wired telephone network subscriber under the control of the radio access apparatus; And When the called person hooks off, the call is switched between the mobile terminal and the wired telephone network subscriber by converting the time division duplex voice signal and the voice signal in the wired network using a wired network matching device for connection with an external network. Steps to Open Wireless access method for a multimedia service comprising a. The method of claim 7, wherein In step b), When providing voice service function, Iii) receiving an outgoing voice service request signal from a mobile terminal in a wireless private network to an external network; Ii) checking the validity of the subscriber of the mobile terminal in the wireless access device, and transmitting the number received from the wired network matching device to the external network for connection with the external network; Iii) transmitting a busy signal when receiving a busy signal from an external network, and transmitting a ring signal to a mobile terminal when receiving a busy signal; Wireless access method for a multimedia service comprising a. The method of claim 13, In the step iii), When the wired subscriber of the external network hooks off, the wired network matching device enables the voice service between the wired subscribers to be converted between the time division duplex voice signal and the voice signal in the external network. Way. The method of claim 7, wherein In step b), When providing data service function, Iii) receiving a data service request signal to a subscriber in a wireless private network; Ii) after the wireless access device confirms the validity of the subscriber, the system converts the outgoing message into the incoming message in the operating state, and transmits the call signal into the corresponding wireless private network. Wireless access method for a multimedia service comprising a. The method of claim 15, In step ii) When the data service request signal is received by the origination of the time division duplex mobile terminal, When the mobile terminal receives an incoming message, transmitting a response signal to a control channel on an access channel or a call channel; If the response signal is transmitted through a control channel, transmitting a connection confirmation signal to a calling terminal by a wireless access device; Performing a data service function between two mobile terminals by passing the data information signal recovered through modulation and demodulation and channel coding used in the time division duplex method as it is; Wireless access method for a multimedia service comprising a. The method of claim 15, In step ii), When a data service request signal is received from a wired data network to a subscriber in a wireless private network through a wired network matching device for access to an external network, When the mobile terminal receives an incoming message, transmitting a response signal to a control channel on an access channel or a call channel; If the response signal is transmitted through a control channel, sending a connection confirmation signal to an opposite wired data network subscriber; The wire network matching device performs a data service function between a mobile terminal and a wired subscriber by converting and transferring data into an information format suitable for information exchange between two terminals. Wireless access method for a multimedia service comprising a. The method of claim 15, In the step iii), When a data service request signal is received from a valid mobile terminal in a wireless private network to a wired telephone network, Transmitting the received number or IP address to the wired telephone network in a wired network matching device for connection with an external network; Setting up a call for data transmission when a response signal is sent from the other side of the wired telephone network; The wire network matching device performs a data service function between a mobile terminal and a wired subscriber by converting and transferring data into an information format suitable for information exchange between two terminals. Wireless access method for a multimedia service comprising a.