KR20050009929A - Wireless receive-send system using bluetooth and non-communication method thereof - Google Patents

Abstract

PURPOSE: A wireless transmit-receive system using Bluetooth and an encryption mode communication method thereof are provided to improve information security by appointing and calling a subscriber in a 1:N communication network. CONSTITUTION: A transceiver in a wireless transmit-receive system using Bluetooth consists of a radio connection part(32) and a transmit-receive part(42). The radio connection part(32) comprises a master Bluetooth(43), an EEPROM(41), a control part(44), and a master Bluetooth antenna(43a). The master Bluetooth(43) enables master-slave Bluetooth communication with a slave Bluetooth in a neck microphone. The EEPROM(41) is to register at least more than three remote neck IDs. The control part(44) controls the master Bluetooth(43) and the EEPROM(41). The master Bluetooth antenna(43a) is for master-slave Bluetooth communication with the slave Bluetooth.

Description

Wireless transmission / reception system using Bluetooth and its secret mode communication method {WIRELESS RECEIVE-SEND SYSTEM USING BLUETOOTH AND NON-COMMUNICATION METHOD THEREOF}

The present invention relates to a wireless transmission and reception system, and more particularly, to configure a communication network using Bluetooth and a microphone, and thereby to designate a receiver in a 1: N communication network by using a user authentication function of Bluetooth. The present invention relates to a wireless transmission / reception system and a secret mode communication method thereof.

1 is a view showing the configuration of a conventional military 1: N communication network system.

As shown in Figure 1, in a conventional 1: N network, transceivers typically use the same frequency (or code).

Each of these transceivers forms a vertical and horizontal network according to the network concept and calls the other party to communicate.

Users press and hold the call switch (PTT) to make a call, and when receiving, the call is set by pressing the call switch (PTT).

In the same network, 1 (send): N (receive) communication is performed between users, and the called party answers during a voice call.

The user who sent first occupies the transmission line, and afterwards the next user can transmit.

As described above, since the conventional transceivers make a voice call using a wired handset, the user uses the same frequency (or code) as the receiver and transmits the call while pressing the push call switch (PTT) of the wired handset. It uses a half duplex method of hydrating the switch.

However, as shown in FIG. 1, the conventional transceiver uses the same frequency (or code), so that everyone can hear when the frequency (or code) is matched.

That is, in the conventional transceiver, since the secret mode and the secret mode are not separated, there is a difficulty when only a call with a specific receiver is desired.

The present invention has been proposed in order to solve the above-mentioned problems, and configures a communication network using Bluetooth and a microphone, thereby enabling a user to communicate by designating a receiver in a 1: N communication network using a user authentication function of Bluetooth. An object of the present invention is to provide a wireless transmission / reception system using Bluetooth and a secret mode communication method thereof.

1 is a view showing the configuration of a conventional military 1: N communication network system.

FIG. 2 is a diagram schematically illustrating a configuration of a secret mode that enables a call to be designated by a receiver in a 1: N communication network system according to an exemplary embodiment of the present invention.

3 is a diagram schematically illustrating a configuration of a secret mode in which a communication is possible by designating a receiver in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention.

4 is a schematic block diagram of a transceiver in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention.

5 is a schematic block diagram of a neck microphone in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention.

6 is a flowchart illustrating a transmission process during a secret mode process in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention.

7 is a flowchart illustrating a receiving process during a secret mode process in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention.

<Description of Major Symbols in Drawing>

41: EEPROM 42: transmitter and receiver

43: master Bluetooth 44: control unit

In order to achieve the above object, according to an aspect of the present invention,

In the transmission and reception system comprising a transmission and reception system of one side for transmitting a signal, and a plurality of other transmission and reception systems for receiving a signal transmitted from the transmission and reception system of one side, the remote wireless communication,

A plurality of neck microphones for transmitting a user's signal from a microphone to a wireless connection unit or receiving a signal transmitted from the wireless connection unit in a master slave type Bluetooth communication in the transmission / reception system of one side;

In the transmission mode by the remote neck ID call from the plurality of neck microphones, a command packet is generated, and when the reception mode is switched, only the neck microphone having the remote neck ID called when the non-modal mode command is called is a non-mode command. All other neck microphones are connected to the wireless connection unit for converting to the ACL mode, and transmits the signal received from the wireless connection unit to the other transmission and reception system as a wireless signal or the wireless signal received from the other transmission and reception system to the wireless connection unit. A transceiver including a transceiver;

It provides a wireless transmission and reception system using a Bluetooth.

Here, the command packet may include a non-mode command, which is a command that allows only specific microphones to communicate among network-connected microphones, a neck ID that is a unique address of a calling microphone, and a receiver to which the calling neckphone is to transmit a signal. It may have a remote neck ID which is a unique address of the neck microphone and a data structure of CRC check-in error check.

According to another aspect of the invention,

In a wireless transmission / reception method of a transmission / reception system comprising a transmission / reception system of one side transmitting a signal and a plurality of transmission / reception systems of another side receiving a signal transmitted from the transmission / reception system of one side,

(a) calling one of the plurality of remote neck IDs already registered via the sender neck microphone;

(b) generating a command packet at a control unit of a wireless connection unit when the remote neck ID is called in step (a);

(c) transmitting / receiving, by the transceiver, the command packet generated in step (b) to the receiving transceiver;

(d) receiving the ACL of the command packet transmitted by the receiving side transceiver;

(e) a control unit of a receiving side wireless connection unit determining whether a non-mode command is received by examining the command packet received in step (d);

(f) in the step (e), if the non-mode command, the controller examines the remote neck ID connected to the wireless connection unit and determines whether the remote neck ID exists;

(g) SCO connection of only called microphones if the remote neck ID exists in step (f), and the conversion of other neck microphones to ACL mode;

(h) if the remote neck ID does not exist in step (f), converting the currently SCO-connected neck microphone into an ACL mode;

It provides a secret mode communication method using a Bluetooth.

Here, the command packet may include a non-mode mode command, which is a command that enables communication between only specific microphones among network-connected microphones, a neck ID, which is a unique address of a calling microphone, and a receiver to which the calling neckphone transmits a signal. It may have a remote neck ID which is a unique address of the neck microphone and a data structure of CRC check-in error check.

Another preferred embodiment,

In a wireless transmission / reception method of a transmission / reception system comprising a transmission / reception system of one side transmitting a signal and a plurality of transmission / reception systems of another side receiving a signal transmitted from the transmission / reception system of one side,

(a) generating a command packet having a secret mode command, a neck ID, the remote neck ID, and an error check data structure if there is any one of the registered remote neck ID calls; ;

(b) determining, by the controller of the receiving side wireless connection unit, whether the non-mode command is determined by examining the command packet received in the step (a);

(c) In step (b), if the remote mode ID is present, the controller determines whether the remote neck ID exists. If the remote neck ID exists, only the called microphone is connected to the SCO, and other neck microphones are ACLs. Converting to mode;

(d) if the remote neck ID does not exist in step (c), converting the currently SCO-connected neck microphone into an ACL mode;

It provides a secret mode communication method using a Bluetooth.

Another preferred embodiment,

In a wireless transmission / reception method of a transmission / reception system comprising a transmission / reception system of one side transmitting a signal and a plurality of transmission / reception systems of another side receiving a signal transmitted from the transmission / reception system of one side,

(a) generating a command packet in a control unit of the wireless connection unit when there is a call of any one of the remote neck IDs among the remote neck IDs already registered from a plurality of neck microphones in Bluetooth communication with the wireless connection unit;

(b) determining, by the controller of the receiving side wireless connection unit, whether the non-mode command is determined by examining the command packet received in the step (a);

(c) In step (b), if the command is a secret mode command, the control unit connects only the microphones having the remote neck ID to the SCO, and all other neck microphones include converting the ACL mode into the secret mode using Bluetooth. Provide a communication method.

Here, the command packet may include a non-mode command, which is a command that allows only specific microphones to communicate among network-connected microphones, a neck ID that is a unique address of a calling microphone, and a receiver to which the calling neckphone is to transmit a signal. It may have a remote neck ID which is a unique address of the neck microphone and a data structure of CRC check-in error check.

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

FIG. 2 is a diagram schematically illustrating a configuration of a secret mode that enables a call to be designated by a receiver in a 1: N communication network system according to an exemplary embodiment of the present invention.

As shown in FIG. 2, a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention includes a transmitting / receiving system for transmitting a voice signal and a plurality of receiving / receiving voice signals transmitted from the transmitting / receiving system. It is composed of the receiving side transmitting and receiving system to perform remote wireless communication.

In the present embodiment, the description is based on a voice signal, but a data signal may also be included.

Each of the wireless transmission / reception systems using Bluetooth includes a plurality of neck microphones that transmit and receive a user's voice signal and a transceiver that enables remote radio (RF) communication for voice signals transmitted and received from the plurality of neck microphones. Include.

In this case, communication between the transceiver and the microphone is performed in full duplex, and communication between the transmitter and the receiver, that is, the transceiver, is performed in a half duplex.

Referring to FIG. 2, a transmission / reception system for configuring a vertical and horizontal network according to a network concept and calling a counterpart to view a communication is shown as an example. FIG. 1 illustrates one transmission system and three reception systems. .

Here, transmission and reception are also possible between three systems on the receiving side.

In addition, in one wireless transmission and reception system, one transceiver may include several wireless neck microphones (only three of them may be illustrated in FIG. 2, but more than two may be possible).

In particular, when each of the microphones is registered in the transceiver according to a predetermined registration procedure (method), the user connected function is distinguished according to the unique address of the neck microphone registered in the transceiver using the Bluetooth user authentication function.

This enables the call to be designated by the receiver (neck microphone) in the 1: N communication network as in the conventional military communication network.

The transmission and reception process of the secret mode in the wireless transmission and reception system using Bluetooth according to the present invention will be described with reference to FIG.

First, when a voice signal is transmitted, any one of a plurality of neck microphone users (Neck Microphone # 2) designates a receiver (Neck Microphone # 8) in a transmitting / receiving system of one side to make a call through the neck microphone. (Step 11), the voice signal transmitted from the neck microphone is transmitted to the transceiver 1 via wireless communication (step 12).

Thereafter, the signal transmitted to the transceiver 1 is modulated into a frequency modulation (FM) signal for remote wireless communication in the transceiver 1, and the modulated FM signal is a transceiver 3 of a receiving side transceiver system through an antenna of a transmitting side transceiver system. Is sent (step 13).

Looking at the reception process of the transmission signal at the receiving side, the modulated FM signal is received through the antenna of the receiving side transmitting and receiving system and the demodulated FM signal is demodulated by the transceiver 3 of the receiving side transmitting and receiving system (step 14).

The demodulated signal at transceiver 3 is then wirelessly transmitted to neck microphone # 8 (step 15).

The signal transmitted to the neck microphone # 8 can be heard by the user through the speaker in the neck microphone # 8 (step 16).

The voice signal transmission / reception process in the wireless transmission / reception system using Bluetooth according to the present invention in this manner is divided into a transmission side and a reception system for convenience of technology, and the reception side transmission / reception of the other side in the transmission side transmission / reception system of one side is performed. Although the transmission process to the system is sequentially described, the signal transmission and reception of the transmission / reception system of one side in the transmission / reception system of the other side may be performed in the same process.

3 is a diagram schematically illustrating a configuration of a secret mode in which a communication is possible by designating a receiver in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention.

Referring to FIG. 3, in a wireless communication system using Bluetooth according to an embodiment of the present invention of FIG. 2, in particular, a secret mode process of a receiving system, that is, one of three neck microphones # 1 to # 3 in one transceiver. By specifying the receiver, it shows that short-range wireless communication between users is possible.

Here, the three neck microphones transmit a user's voice signal from the microphones 36a, 36b, and 36c to the wireless connector 32 or transmit a signal transmitted from the wireless connector 32 to the speaker 37a, 37b, or the like through Bluetooth communication. Neck microphone section 33, 34, 35 for listening to the voice signal at 37c).

In addition, the neck microphone, a push call switch (PTT switches: 38a, 38b, 38c) to switch to the user's call mode by pressing when the call is made, the user's receiving mode through the release when receiving, and the wireless connection unit 32 It is configured to include a slave Bluetooth antenna 33a, 33b, 33c for Bluetooth communication with).

In addition, the transceiver includes a wireless connection unit 32 for receiving a voice signal from the neck microphone or transmitting an input signal to the neck microphone through Bluetooth communication, and a signal received at the wireless connection unit 32 to the other transceiver system. It is configured to include a transceiver 31 for transmitting a radio signal or the radio signal transmitted from the other transmission and reception system to the wireless connection unit 32.

In addition, the transceiver includes a master Bluetooth antenna 32a for Bluetooth communication with the neck microphone units 33, 34, and 35, and a transceiver antenna 31a for wireless communication between the transceivers.

In addition, in the present invention, the wireless connection unit 32 of the transceiver and the slave Bluetooth of the microphone unit 33, 34, 35 of the microphone are connected in a master slave manner, thereby enabling short-range wireless communication.

In particular, the present invention configures a communication network using a transceiver and a neck microphone, and connects subscribers connected according to a unique address (hereinafter, referred to as a neck ID) of a neck microphone registered in the wireless connection unit 32 using a Bluetooth user authentication function. It is possible to implement a secret mode that can call by specifying the recipients separately.

Referring to FIG. 3, a process of designating a receiver in a system implementing a secret mode using Bluetooth according to the present invention is described below.

Herein, when a user designates a user of the neck microphone # 1 as a receiver among any one of the microphone # 1, # 2, or # 3 users, for example, the reception side will be described.

First, the IDs of each of the connected microphones are registered in the wireless connection unit 32 connected according to the registration procedure (step 21).

Here, the master Bluetooth of the wireless connection unit 32 of the receiving side transceiver may register at least three neck IDs.

Each device is powered on and neck microphones # 1, # 2, or # 3 are connected to the wireless connection 32 (step 22).

When the connection is established, the caller (ID microphone user of the other transmitting / receiving system, not shown) calls the neck ID of the microphone # 1 designated as the receiver, and the called receiver neck ID and the sender neck ID are displayed. Is sent to the wireless connection 32 (step 23).

Here, the neck ID of the sender or receiver is assigned from the production stage of the Bluetooth chip as a unique number of the Bluetooth chip, and the receiver neck ID is performed by designating the address of the registered Bluetooth according to the registration procedure.

When the call of the receiver neck ID is transmitted to the neck microphone # 1, a Bluetooth connection is made to the neck microphone, that is, the neck microphone # 1 that matches the ID received at the wireless connection 32 of the receiver transceiver (step 24).

Here, the call signal is transmitted from the wireless connection unit 32 to the first neck microphone unit 33 through short-range wireless communication between the master Bluetooth antenna 32a of the wireless connection unit 32 and the slave Bluetooth antenna 33a.

The user of the microphone # 1 that has a Bluetooth connection responds to the secret mode communication.

In this case, when 1: N communication is required, communication may be performed without designating a subscriber using an all mode.

4 is a schematic block diagram of a transceiver in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention.

As shown in FIG. 4, a transceiver of a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention includes a wireless connection unit 32 and a transmission / reception unit 42, and the wireless connection unit 32 is the transmission / reception unit. It can be configured integrally with 42 or detachably.

Here, the wireless connection unit 32, the master Bluetooth 43 to enable the Bluetooth communication of the slave Bluetooth and the master slave scheme in the neck microphone with respect to the transmission and reception voice signal of the neck microphone; EEPROM 41 that can register at least three or more unique address, that is, the remote neck ID of the neck microphone to be transmitted to a specific address is included.

In addition, the wireless connection unit 32, the control unit 44 for controlling the master Bluetooth (43) and the EEPROM (41); A master Bluetooth antenna 43a for master communication of the slave Bluetooth with the slave Bluetooth is included.

Herein, the control unit 44 generates a command packet when the talk mode is specified and the call is implemented. The command packet includes data of a talk mode command, a neck ID code, a remote neck ID, and an error check. Has a structure.

In addition, the non-switch mode command refers to a command for communicating only specific neck microphones among the network-connected neck microphones.

In addition, the neck ID refers to the unique address of the calling microphone, and the Remote Neck ID refers to the unique address of the receiver neck microphone to which the calling neck micron is to transmit a signal.

In addition, an error check refers to a cyclic redundance checking (CRC) check, which refers to an error detection part following a file that checks whether or not any generated data is correct.

In addition, the control unit 44 generates a command packet in this manner in the transmission mode. On the other hand, when the receiving mode is switched, the received command packet is checked to determine whether the command is a non-mode command.If the non-mode command, only the microphone having the called remote neck ID is connected in SCO mode, and all other connected microphones are in the ACL mode. To.

Here, the ACL (Asyncronous Connection Link) is a connection state that allows Bluetooth to communicate data, and the SCO (Syncronous Connection Link) is a connection state where Bluetooth can communicate as well as data communication.

In addition, the transmitter includes a transceiver 42 which transmits a signal transmitted to the master Bluetooth 43 as a radio signal to the other transceiver system or receives a radio signal transmitted from the other transceiver system.

5 is a schematic block diagram of a neck microphone in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention.

As shown in Figure 5, the neck microphone according to an embodiment of the present invention includes a microphone 52 for amplifying a user's voice signal during transmission; A speaker 53 is included to enable the reception of the transmitted signal as a voice signal upon reception.

In addition, the neck microphone may include a slave Bluetooth that enables a Bluetooth communication of a master Bluetooth and a master slave method of a transceiver with respect to a voice signal transmitted through the microphone 52 or a voice signal received through the speaker 53. 51) is further included.

In addition, the neck microphone includes a codec for transmitting a signal transmitted through the microphone 52 to the slave Bluetooth 51 or a signal received by the slave Bluetooth 51 to the speaker 53. )and; The control unit 56 is further connected to the slave Bluetooth 51 to control the entire neck microphone.

In addition, the neck microphone includes a battery 55 for supplying power to the slave Bluetooth and the control unit 56; A slave Bluetooth antenna 51a is further included for the master slave Bluetooth communication with the master Bluetooth of the transceiver.

In addition, the neck microphone further includes a push call switch (PTT switch) 54 for switching to a user's call mode through pressing when outgoing, and placing when receiving.

The wireless voice recognition neck microphone further includes a voice recognition module 58 for controlling the push call switch 54 by using a voice recognition function when voice control is required.

Here, the voice recognition module 58 further includes a voice registration key button for registering a word for a press call required when voice control is required, and a word for a press call registered through the voice registration key button, for example A call can be made using the send word 'call' and the receive word 'recall'.

In addition, in the secret mode, not only the receiver neck ID may be called through the voice recognition module 58 but also the receiver neck ID may be called through a separate data input unit capable of inputting or selecting a neck ID number.

Hereinafter, a description will be given in more detail with reference to Figs. 6 and 7 the process of the secret mode in the wireless transmission and reception system using Bluetooth according to an embodiment of the present invention.

6 is a flowchart illustrating a transmission process during a secret mode process in a wireless transmission / reception system using Bluetooth according to an embodiment of the present invention, and FIG. 7 is a flowchart illustrating a reception process during a secret mode process.

As shown in FIG. 6, all of the devices of the wireless transmission / reception system according to an embodiment of the present invention are powered on, and the controller of the wireless connection unit is a slave Bluetooth that is connected to the master Bluetooth. A plurality of neck microphones (hereinafter, a plurality of remote neck IDs) may be registered in the EEPROM.

Thereafter, after the registration of the plurality of remote neck IDs in the registration mode, one of the plurality of remote neck IDs already registered through the voice recognition of the sender neck microphone is called, that is, a specific remote neck ID. (S31).

Here, the call of the remote neck ID (hereinafter, referred to as a remote neck ID) specific to the receiver may be a voice call through the voice recognition module, or may be possible through a number key of a data input unit attached to the neck microphone.

Thereafter, when the control unit of the neck microphone analyzes the remote neck ID and transmits the remote neck ID to the control unit of the wireless connection unit, the control unit of the wireless connection unit interprets this to generate a command packet (S32).

Here, the command packet has a data structure of a non-mode command, a neck ID, a remote neck ID, and an error check.

In addition, the non-switch mode command refers to a command for communicating only specific neck microphones among the network-connected neck microphones.

Further, the neck ID refers to the unique address of the calling microphone, and the remote neck ID refers to the unique address of the receiver neck microphone to which the calling neck microphone is to transmit a signal.

In addition, an error check refers to a cyclic redundance checking (CRC) check, which refers to an error detection part following a file that checks whether or not any generated data is correct.

Subsequently, when the control unit of the wireless connection unit transmits a command packet transmitted to the connected transceiver unit (S33), the transceiver unit transmits the data communication (ACL) to the receiver side transceiver unit (S34).

At this time, the signal transmission in the transmission and reception unit is a broadcast (broadcasting) call method, because the transceiver is typically a transceiver does not have a way to call a specific radio.

Meanwhile, the reception process of the transmitted signal will be described with reference to FIG. 7.

The receiving side transceiver receives the data communication (ACL) transmitted through the transmitting side transceiver (S41).

Thereafter, the control unit of the receiving side wireless connection unit examines the command packet received from the receiving side transmitting and receiving unit (S42), and determines whether it is a non-switch mode command (S43).

Here, if the non-mode command, the controller examines the remote neck ID connected to the wireless connection unit (S44), and determines whether the remote neck ID exists (S45).

In addition, if the remote neck ID is present, only the neck microphone, that is, the called neck microphone, is connected to the SCO, and the other neck microphones are left in the ACL mode.

In other words, only the called microphone and the called microphone are in a voice call state, and the other neck microphones do not listen to the sender's voice only by performing data communication in ACL mode.

In addition, the SCO connection of the called microphone is determined whether it is in the current SCO mode (S46), and if it is in the SCO state, the call can be made immediately, but otherwise, the called microphone is converted to the SCO mode (S47). .

On the other hand, if the remote neck ID does not exist, the current SCO connected neck microphone is changed to ACL mode so that the caller's voice cannot be heard (S48).

As such, only the called microphone can be connected in the SCO mode, and all other neck microphones can be left in the ACL mode to implement the secret mode.

On the other hand, if the non-speak mode command, the receiver can be heard by anyone of the neck microphone connected to the wireless connection, the secret mode is not implemented and is terminated.

As described above, the wireless transmission and reception system using Bluetooth according to the present invention and the method, when making a voice call using a wireless neck microphone by assigning an ID (telephone number concept) to the neck microphone to designate a desired user call can do.

Therefore, the information security can be improved by designating a subscriber and making a call when necessary in a 1: N communication network as in a conventional military communication network.

Claims (7)

In the transmission and reception system comprising a transmission and reception system of one side for transmitting a signal, and a plurality of other transmission and reception systems for receiving a signal transmitted from the transmission and reception system of one side, the remote wireless communication, A plurality of neck microphones for transmitting a user's signal from a microphone to a wireless connection unit or receiving a signal transmitted from the wireless connection unit in a master slave type Bluetooth communication in the transmission / reception system of one side; In the transmission mode by the remote neck ID call from the plurality of neck microphones, a command packet is generated, and when the reception mode is switched, only the neck microphone having the remote neck ID called when the non-modal mode command is called is a non-mode command. All other neck microphones are connected to the wireless connection unit for converting to the ACL mode, and transmits the signal received from the wireless connection unit to the other transmission and reception system as a wireless signal or the wireless signal received from the other transmission and reception system to the wireless connection unit. A transceiver including a transceiver; Wireless transmission and reception system using a Bluetooth comprising a. The method of claim 1, The command packet may include a non-mode command, which is a command to allow only specific microphones to communicate among network-connected neck microphones, a neck ID which is a unique address of a calling microphone, and a receiver neck microphone to which the calling neck microphone is to transmit a signal. A wireless transmission / reception system using Bluetooth, comprising a remote neck ID which is a unique address of a and a data structure of CRC check-in error check. In a wireless transmission / reception method of a transmission / reception system comprising a transmission / reception system of one side transmitting a signal and a plurality of transmission / reception systems of another side receiving a signal transmitted from the transmission / reception system of one side, (a) calling one of the plurality of remote neck IDs already registered via the sender neck microphone; (b) generating a command packet at a control unit of a wireless connection unit when the remote neck ID is called in step (a); (c) transmitting / receiving, by the transceiver, the command packet generated in step (b) to the receiving transceiver; (d) receiving the ACL of the command packet transmitted by the receiving side transceiver; (e) a control unit of a receiving side wireless connection unit determining whether a non-mode command is received by examining the command packet received in step (d); (f) in the step (e), if the non-mode command, the controller examines the remote neck ID connected to the wireless connection unit and determines whether the remote neck ID exists; (g) in step (f), if the remote neck ID is present, only calling the called microphone SCO, and converting other neck microphones to ACL mode; (h) if the remote neck ID does not exist in step (f), converting the currently SCO-connected neck microphone into an ACL mode; Secret mode communication method using a Bluetooth comprising a. The method of claim 3, wherein The command packet may include a non-mode command, which is a command that allows only specific microphones to communicate among network-connected neck microphones, a neck ID that is a unique address of a calling microphone, and a receiver neck microphone to which the calling neck microphone is to transmit a signal. And a data structure of a CRC check-in error check and a remote neck ID which is a unique address of the non-transitory mode. In a wireless transmission / reception method of a transmission / reception system comprising a transmission / reception system of one side transmitting a signal and a plurality of transmission / reception systems of another side receiving a signal transmitted from the transmission / reception system of one side, (a) generating a command packet having a secret mode command, a neck ID, the remote neck ID, and an error check data structure if there is any one of the registered remote neck ID calls; ; (b) determining, by the controller of the receiving side wireless connection unit, whether the non-mode command is determined by examining the command packet received in the step (a); (c) In step (b), if the remote mode ID is present, the controller determines whether the remote neck ID exists. If the remote neck ID exists, only the called microphone is connected to the SCO, and other neck microphones are ACLs. Converting to mode; (d) if the remote neck ID does not exist in step (c), converting the currently SCO-connected neck microphone into an ACL mode; Secret mode communication method using a Bluetooth comprising a. In a wireless transmission / reception method of a transmission / reception system comprising a transmission / reception system of one side transmitting a signal and a plurality of transmission / reception systems of another side receiving a signal transmitted from the transmission / reception system of one side, (a) generating a command packet in a control unit of the wireless connection unit when there is a call of any one of the remote neck IDs among the remote neck IDs already registered from a plurality of neck microphones in Bluetooth communication with the wireless connection unit; (b) determining, by the controller of the receiving side wireless connection unit, whether the non-mode command is determined by examining the command packet received in the step (a); (c) In the step (b), if the non-mode command, the control unit SCO only connects the neck microphone having the remote neck ID, and all other neck microphones comprising the step of converting to ACL mode Bluetooth, characterized in that Secret mode communication method using a. The method of claim 6, The command packet may include a non-mode command, which is a command that allows only specific microphones to communicate among network-connected neck microphones, a neck ID that is a unique address of a calling microphone, and a receiver neck microphone to which the calling neck microphone is to transmit a signal. And a data structure of a CRC check-in error check and a remote neck ID which is a unique address of the non-transitory mode.