KR100394784B1 - Wireless communication method and wireless-phone using hybrid-division multiple access - Google Patents

Abstract

The present invention relates to a wireless communication method and a wireless terminal device for the same using a multi-division multiple access method, the wireless communication method of the present invention, after a predetermined terminal designates a receiving terminal and transmits a call request signal, the corresponding receiving terminal When a call answering signal including channel information allocated to the receiving terminal is received, the data to be transmitted is modulated by binary CDMA to generate a data transmission frame for complex division multiple transmission, and then the complex division multiple transmission Transmitting data to a corresponding receiving terminal by a data transmission frame, the wireless terminal apparatus of the present invention comprising: an interface unit; A modulator that modulates the data in a CDMA manner to transmit the data of multiple channels to be transmitted through one time slot, and then generates a data transmission frame for transmitting the CDMA modulated data in a multiplexed multiplex transmission scheme; ; A transmitter; A receiver; A demodulator; A relay processing unit for relaying the data including the relay request signal through the receiving unit to the receiving terminal; And a control unit for controlling a modulator, a relay processor, and a demodulator by a user's processing command input through the interface unit. Therefore, the CDMA modulation signal can be used in combination with the TDMA signal, thereby ensuring the use of independent channels between users of the wireless LAN and increasing the number of available channels.

Description

Wireless communication method using hybrid division multiple access method and wireless terminal device therefor {Wireless communication method and wireless-phone using hybrid-division multiple access}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication method using a multi-division multiple access method and a wireless terminal apparatus for the same. In particular, a modulated signal of a CDMA type is combined with a TDMA-type signal by a data transmission frame supporting multi-division multiplexing. The present invention relates to a wireless communication method and a wireless terminal device that ensures the use of independent channels among users of a wireless LAN and expands the number of available channels.

In general, a wireless communication method for exchanging data wirelessly is classified into a direct exchange method by an exchanger and a wireless LAN (Local Access Network) method that receives a channel by using a protocol between users.

Among them, the direct exchange method using an exchange can protect a channel used for a call between users from being used by another user, but there is a burden of using a separate exchange to increase an available channel. On the other hand, the wireless LAN method uses a time division multiple access (TDMA) method for channel allocation among users, and the number of available channels is limited due to the characteristics of the time division multiple access (TDMA) method. There is a problem that it is not possible to prevent another terminal from intentionally using or unintentionally interfering with a channel already allocated.

As such, the reason why the TDMA scheme is mainly used for the wireless LAN scheme is that the TDMA scheme secures a larger number of available channels than the frequency division multiple access (FDMA) scheme. This is because it has a simple system structure compared to Code Division Multiple Access (CDMA) method.

In other words, the FDMA method has a characteristic that the system structure is simple because the operation is performed even if the time synchronization between equipments is not matched, while the number of available channels is smaller than that of other methods, and the CDMA method reliably eliminates interference between users. Although there is an advantage in that the channel can be guaranteed to the user, the system structure is complicated and the level of the modulated signal is several steps in the form of an analog signal, which makes it difficult to use it with other division methods.

In particular, in the case of the CDMA scheme, although the superior characteristics of guaranteeing independent channel use by removing interference between users are ensured, the modulated signal is different from that of other partitioning schemes. There was a disadvantage that it can not be applied to a wireless LAN.

Accordingly, in the present invention, in order to solve the above disadvantages, the CDMA modulation signal can be used in combination with the TDMA signal by the data transmission frame supporting complex division multiplexing, thereby enabling independent channels between users of the wireless LAN. It is an object of the present invention to provide a wireless communication method and a wireless terminal device which guarantees the use and expands the number of available channels.

1 is a flowchart illustrating a wireless communication method according to an embodiment of the present invention;

2 is a flowchart illustrating a method for generating a binary CDMA modulated signal according to an embodiment of the present invention;

2A is a waveform diagram illustrating a process of generating a binary CDMA modulated signal according to an embodiment of the present invention;

3 is a flowchart illustrating a process of generating a data transmission frame for multi-division multiplexing according to an embodiment of the present invention;

3a is a data format for a data transmission frame for multiplexed multiplexing according to an embodiment of the present invention;

4 is a flowchart illustrating a relay process according to an embodiment of the present invention;

5 is an exemplary diagram for data transmission formats transmitted / received during wireless communication by a wireless communication method according to an embodiment of the present invention;

6 is a schematic block diagram of a wireless terminal device according to an embodiment of the present invention;

6A is a schematic block diagram of a modulator according to an embodiment of the present invention;

6B is a schematic block diagram of a demodulator according to an embodiment of the present invention;

6c is a schematic block diagram of a relay processing unit according to an embodiment of the present invention;

7 to 8b are exemplary diagrams illustrating a frame setting for performing wireless communication according to an embodiment of the present invention.

♣ Explanation of symbols for the main parts of the drawing ♣

100: interface unit 200: control unit

300: input unit 400: modulator

500: relay processing unit 600: demodulation unit

700: output unit 800: transmission unit

900 receiver

In order to achieve the above object, the wireless communication method provided by the present invention comprises a first step of the arbitrary terminal designates the receiving terminal and transmits a call request signal, and then waits for a response of the corresponding receiving terminal; A second step of modulating data to be transmitted by a CDMA method when a call response signal including channel information allocated to the receiving terminal is received from the receiving terminal; A third step of converting data modulated by the CDMA method in the second step into a binary form; The binary CDMA modulated signal is divided into information blocks of a predetermined length, and each data block is added with synchronization information for time division transmission and frequency stabilization time information for frequency division transmission for each data block. Generating a fourth process; And a fifth step of transmitting the complex-division multiplexing data transmission frame to the corresponding reception terminal based on the channel information included in the call response signal received from the reception terminal.

In addition, for the above purpose, the wireless terminal device provided in the present invention includes an interface unit for performing an interface with a user; A modulator that modulates the data in a CDMA manner to transmit the data of multiple channels to be transmitted through one time slot, and then generates a data transmission frame for transmitting the CDMA modulated data in a multiplexed multiplex transmission scheme; ; A transmitter for transmitting the modulated signal to the outside; A receiving unit for receiving data; A demodulator for demodulating data received through the receiver; A relay processing unit for receiving the data including the relay request signal through the receiving unit, analyzing the signal to extract final receiving terminal information, and relaying the corresponding data to the receiving terminal through the transmitting unit; And a controller configured to control the modulator, the relay processor, and the demodulator by a user's processing command input through the interface unit.

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

1 is a process flow diagram for a wireless communication method according to an embodiment of the present invention. Referring to FIG. 1, in the wireless communication method of the present invention, an arbitrary terminal designates a receiving terminal to transmit a call request signal (S100), and then waits for a response of the corresponding receiving terminal (S200).

At this time, the form of the call request signal includes a predetermined preamble signal (Preamble) for time synchronization and a call request signal (Call request) including the receiving terminal information, as shown in FIG. The process of transmitting a call request signal by designating a terminal is a general process for wireless call connection.

Meanwhile, when a call response signal including channel information allocated to the receiving terminal is received from the receiving terminal receiving the call request signal, the data to be transmitted is modulated by the CDMA method (S300). That is, when the receiving terminal receiving the call request signal transmits a call answering signal including 'ACK' including its own channel information to the call request signal as shown in FIG. The terminal requesting the call modulates the data to be transmitted by the number of transmission codes set for each terminal among modulation codes commonly assigned to all terminals. In this case, the number of transmission codes set for each terminal refers to a value in which transmission codes available for each terminal are allocated according to system characteristics, and the number of codes refers to the number of channels available for each terminal as a result. For example, if 16 stations are allocated to a mother station for wireless communication, and a plurality of terminals connected to the base station are assigned 8 codes for each of the base stations, the mother station may use 16 transmission channels. Each terminal may use eight transmission channels.

When the data to be transmitted is modulated by the CDMA method, the CDMA modulated data is converted into a binary form to generate a binary-CDMA signal (S400). That is, after adding the data of each modulated channel, only the sign of the added value is taken to generate binary CDMA modulated data. At this time, in order to prevent the sum of each modulated channel from becoming '0', when the number of modulated channels is even, an additional virtual channel having a predetermined value is added to adjust the number of channels to an odd number.

Then, the binary CDMA modulated signal is divided into information blocks of a predetermined length, and for each of the information blocks, synchronization information for time division transmission and frequency stabilization time information for frequency division transmission are added to transmit data for complex division multiplexing. After generating the frame (s500), based on the channel information included in the call response signal received from the receiver, the transmission data is transmitted to the receiver in the data transmission frame for the multi-division multiplexing (s600).

Here, the complex division multiplexing refers to a multiplexing scheme in which a combination of the frequency division multiplexing scheme, the time division multiplexing scheme, and the code division multiplexing scheme, which is a conventional multiplexing scheme, is used. The transmission frame is a data transmission frame capable of supporting all these multiple transmission methods.

2 is a flowchart illustrating a method for generating a binary CDMA modulated signal s400 according to an embodiment of the present invention. Referring to FIG. 2, in order to generate a binary CDMA modulated signal, first, the number of input channels to be modulated is checked (S410). That is, it is checked whether the number of channels is even or odd (s420). If the number of channels is even, an additional virtual channel having a predetermined value is added (s430). At this time, the value of the added virtual channel is irrelevant.

After determining the number of input channels in an odd number, the CDMA modulated signal for each channel is generated by multiplying each orthogonal code by each orthogonal code (S440). Then, the CDMA modulation signals for each channel and the channel value of the added virtual channel are added (s450), and only the sign of the added result is taken to generate a binary CDMA modulation signal (s460).

2A is a waveform diagram illustrating a process of generating a binary CDMA modulated signal. (A) (d) of FIG. 2a shows channels input for modulation, (e) shows virtual channels for adjusting the odd number of these channels, and (f) shows each of these channels ((a (G) shows the result of converting a CDMA modulation signal having a multi-level as shown in (f) into binary form by the sign thereof.

3 is a flowchart illustrating a process of generating a data transmission frame for complex division multiple transmission (s500) according to an embodiment of the present invention. Referring to FIG. 3, in order to generate a data transmission frame for multiplex multiplexing, first, a binary-CDMA modulation signal generated in the previous step (S400) is divided into a predetermined length (S510). That is, a plurality of information blocks are generated by dividing a binary-CDMA modulated signal by the length of an integer multiple of the orthogonal code used when generating the CDMA modulated signal.

After adding predetermined preamble information for time synchronization of the time-division frame to the front of the information block (s520), delay time information for preventing data collision between time-division frames is added to the rear of the information block. Add (s530). This is information necessary for transmitting the information block in the TDMA scheme. Meanwhile, in order to transmit the information block using the FDMA scheme, the stabilization time information is added to the front of the information block to which such information is added (S540). In other words, in converting a frequency value, lock time required by the frequency synthesizer is added to stabilize the converted frequency.

3A shows a data format for a data transmission frame for multiplexed multiplexing according to an embodiment of the present invention. Referring to FIG. 3A, a data transmission frame according to an embodiment of the present invention includes a stabilization area 31, a synchronization area 32, and a data area (binary-CDMA data) 33. Referring to FIG. And a delay area (dummy) 34.

The lock time 31 stores predetermined time information required by the frequency synthesizer to stabilize the converted frequency when converting the frequency value for channel formation, and the preamble 32 stores the time of the time division frame. It stores predetermined preamble information for synchronization, and the data area (binary-CDMA data) 33 converts a multilevel CDMA modulation signal modulated by a plurality of orthogonal codes into binary form by its code. A true-CDMA signal is stored, and a delay area 34 stores delay time information for preventing data collision between time division frames.

4 is a flowchart illustrating a relay process according to an embodiment of the present invention.

After a certain terminal transmits a call request signal to a desired receiving terminal, if there is no response from the receiving terminal for a predetermined time, the terminal sends a response to the relay request after requesting relaying to other terminals nearby. Data is transmitted to a desired receiving terminal through a series of processes shown in FIG. 4.

Referring to FIG. 4, first, the terminal transmits a relay request signal to other terminals nearby (S810). At this time, the relay request signal has a form in which a relay request flag is added to a predetermined region of the general call request signal as shown in FIG. 5C, and the corresponding terminal floods the relay request signal. Wait for a response (S820).

When a relay response signal (shown in (d) of FIG. 5) arrives from one of the neighboring terminals receiving the relay request signal (shown in FIG. 5D), the terminal to analyze and relay the relay information. After extracting relay related information such as channel information (s830), based on the information, transmission data consisting of a data transmission frame for multiplex transmission is transmitted to a desired receiving terminal (s840 to s870). At this time, once the relay terminal is selected, a series of processes (s840 to s870) for modulating the transmission data and putting the data in a data transmission frame for transmission are the same as the processes (s300 to s600) shown in FIG. Do.

On the other hand, if the terminal that has delivered the relay response signal is already in communication with another terminal, a relay code for generating a relay channel is additionally allocated to the terminal that has transmitted the relay response signal. That is, the number of codes available in the time slot allocated to the terminal may be additionally allocated within the possible range. For example, if the number of codes available in each time slot is 16, and the number of codes currently assigned to the corresponding terminal is eight, assigning up to eight additional codes to the terminal for generating a channel for relaying It is possible.

6 is a schematic block diagram of a wireless terminal device according to an embodiment of the present invention. Referring to FIG. 6, the wireless terminal device provided in the present invention includes an interface unit 100, a control unit 200, an input unit 300, a modulator 400, a relay processor 500, a demodulator 600, and an output unit. The unit 700 is configured to include a transmitter 800 and a receiver 900.

The interface unit 100 provides an interface with the user, the input unit 300 inputs data to be transmitted from the user, and the output unit 700 receives the demodulated data after being received by the wireless terminal device of the present invention. To provide.

The modulator 400 modulates the data by the CDMA method to transmit the multi-channel data input through the input unit 300 through a single time slot, and then transmits the CDMA modulated data by the complex division multiplex transmission method. Create a data transmission frame for

The transmitter 800 transmits a signal modulated by the modulator 400 to the outside, and the receiver 900 receives data.

The demodulator 600 demodulates the data received through the receiver 900 and outputs the demodulated data to the output unit 700.

When the relay processing unit 500 receives the data including the relay request signal through the receiver 900, the relay processor 500 analyzes the signal, extracts the final receiver terminal information, and relays the data to the corresponding receiver terminal through the transmitter 800. do.

The controller 200 controls the input unit 300, the modulator 400, the relay processor 500, the demodulator 600, and the output unit 700 according to a user's processing command input through the interface unit 100. do.

6A is a schematic block diagram of a modulator 400 according to an embodiment of the present invention. Referring to FIG. 3A, the modulator 400 includes a CDMA signal generator 410, a channel determiner 420, a signal converter 430, a group code generator 440, a multiplier 450, and a TDMA processor ( 460 and the FDMA processing unit 470.

The CDMA signal generator 410 generates a channel-specific CDMA modulated signal by multiplying each orthogonal code by each channel-specific data input through the input unit 300 to be modulated.

The channel determiner 420 checks the number of channels of the modulated signal output from the CDMA signal generator 410 and adds an additional virtual channel having a predetermined value when the number of channels is even. This is to prevent this because if the number of channels is even, the value of each channel may be '0', and the value of the added virtual channel is not important.

The signal converter 430 adds the CDMA modulated signals through the channel determiner 420 and the channel value of the added virtual channel, and generates a binary CDMA modulated signal by taking only the sign of the added result. For example, if the value is positive, the value is assumed to be '1'. If the value is negative, the value is assumed to be '0', and the value is set to '1' and '0'. Generate the represented CDMA modulated signal.

The group code generator 440 generates a group code shared among subscribers belonging to the same group to avoid inter-group interference.

The multiplier 450 multiplies the binary coded CDMA modulation signal output from the signal converter 430 by the group code generated by the group code generator 440.

The TDMA processor 460 divides the output signal of the multiplier 450 into an information block of a predetermined length, and then adds predetermined data to the information block for transmitting the information block in a time division multiple access (TDMA) scheme. In this case, preamble information is added to the beginning of the information block to synchronize time synchronization of the time-division frame, and delay time information dummy is added to the back of the information block to prevent data collision between time-division frames. do.

The FDMA processing unit 470 adds predetermined data for transmitting the information block in the frequency division multiple access (FDMA) scheme to the information block output from the TDMA processing unit 460. That is, in the front of the information block output from the TDMA processor 460, predetermined lock time information required by the frequency synthesizer is added to stabilize the converted frequency when converting the frequency value for channel formation.

6B is a schematic block diagram of a demodulator 600 according to an embodiment of the present invention. Referring to FIG. 6B, the demodulator 600 of the present invention includes a synchronization comparator 610, a group code generator 620, a multiplier 630, and a CDMA demodulator 640.

The synchronization comparator 610 compares the synchronization of the data input through the receiver 900 (in FIG. 3) to identify and receive only data transmitted to the synchronization comparator 610.

The group code generator 620 generates a group code shared among terminals belonging to the same group to avoid inter-group interference. The group code generated at this time is equal to the group code value multiplied during modulation.

The multiplier 630 multiplies the data received through the synchronous comparator 610 with the group code generated by the group code generator 620 to extract only the pure modulated signal, and transmits only the pure modulated signal to the CDMA demodulator 640. The grandfather 640 demodulates the modulated signal.

6C is a schematic block diagram of a relay processing unit 500 according to an embodiment of the present invention. Referring to FIG. 6C, the relay processor 500 includes a relay controller 510, a signal analyzer 520, and a response processor 530.

When the signal analyzer 520 receives the data including the relay request signal through the receiver, the signal analyzer 520 analyzes the signal and extracts the final receiver terminal information for relay progress.

When the relay controller 510 receives the relay request signal from the signal analyzer 510, the relay controller 510 determines whether the relay can be relayed for the request, sets a relay channel for relaying the corresponding data to the final receiving terminal, and then relays the relay request. Perform a series of processes to control the process.

That is, by checking the number of codes assigned to the terminal device and the number of codes available, the available transmission channel is checked. If the transmission channel is already occupied by another call, the terminal additionally adds codes necessary for forming a relay channel. Allocate more.

On the other hand, the response processing unit 530 transmits a relay response signal under the control of the relay control unit 510 when the relay is possible as a result of the determination of the relay control unit 510, and then receives the final receiving terminal information extracted from the signal analysis unit 520. The transmitter controls the transmitter to relay the data to the final receiving terminal according to the control.

7 is a diagram illustrating an example of channel allocation for wireless communication between four terminals 20 to 50 when one mother station 10 is connected.

Referring to FIG. 7, six frames (in this case, frames refer to time slots divided for time division multiple access) ('frame 1' to 'frame 6') are allocated for data transmission therebetween. Two frames ('Frame 1' and 'Frame 2') are allocated to generate a transmission channel of the mother station 10, and the remaining four frames ('Frame 3' to 'Frame 6') are each of the terminals 20. To 50).

That is, the mother station 10 is assigned a plurality of time slots ('frame 1', 'frame 2') for generating a transmission channel, and 16 codes are assigned to each of them. Accordingly, the mother station 20 transmits data to the first terminal 20 by higher codes 1 through 8 of 'frame 1', and the second terminal by lower codes 9 through 16 of 'frame 1'. 30, data is transmitted to the third terminal 40 by the higher codes 1 through 8 of 'frame 2', and the lower codes 9 through 16 of 'frame 2' are transmitted. 4 Send data to the terminal 50. In addition, the mother station uses 'frame 1' to receive data transmitted from the first terminal 20 and the second terminal 30, and the data transmitted from the third terminal 40 and the fifth terminal 50. In order to receive the 'frame 2' is used.

Meanwhile, eight codes are assigned to 'frame 3' to 'frame 6', respectively, 'frame 3' is allocated to generate a transmission channel of the first terminal 20, and 'frame 4' is assigned to the second terminal 30. ) Is allocated for generation of a transmission channel, 'frame 5' is allocated for generation of a transmission channel of the third terminal 40, and 'frame 6' is allocated for generation of a transmission channel of the fourth terminal 50. In addition, each of the terminals 20 to 50 uses the allocated frames to receive data transmitted from different terminals and the mother station. At this time, if the second terminal 30 wants to relay the call between the first terminal 20 and the third terminal 40, if the second terminal 30 is not making a call on its own, the currently allocated eight Although relaying is performed by a code, if the second terminal 30 is in a call with the fourth terminal 50 by the currently assigned eight codes, eight codes for relaying are transmitted to the second terminal 30. In addition, the second terminal 30 can perform relaying by additionally assigning codes.

This can be implemented by a data frame for multiplexing multiplexing which can transmit data modulated with multiple codes in one frame.

8A is an exemplary diagram illustrating a channel assignment state for communication between two terminals according to an embodiment of the present invention. Referring to FIG. 8A, four frames (“frame 1” to “frame 4”) are allocated for wireless communication between the fifth terminal 60 and the sixth terminal 70, and the respective terminals 60 and 70. In order to generate a transmission channel of the terminal, each of the terminals 60 and 70 is allocated two frames to which four codes (represented by different shaped blocks included in each frame) are allocated. This is because eight channels are generally required for voice calls. At this time, if more terminals are added, four codes are allocated to each frame, and one frame is allocated to each terminal, whereby a call between up to four terminals is possible. In the example of FIG. 5A, 'frame 1' and 'frame 3' are used to generate a transmission channel of the fifth terminal 60, and 'frame 2' and 'frame 4' generate a transmission channel of the sixth terminal 70. Used for

8B is an exemplary view illustrating a state in which one terminal relays communication between two other terminals according to an embodiment of the present invention. Referring to FIG. 8B, in order to allow the eighth terminal 71 to relay wireless communication between the seventh terminal 61 and the ninth terminal 81, four frames ('frame 1' to 'frame 4') are selected. 8 codes (expressed as different shaped blocks included in each frame) are allocated to each of the terminals 61, 71, and 81 to generate a transmission channel of each of the terminals 61, 71, and 81. Allocated frames. In this case, since the eighth terminal 71 needs to perform relaying, two transmission channels are required. That is, a transmission channel for transmitting data transmitted from the seventh terminal 61 to the ninth terminal 81, and a transmission channel for transmitting data transmitted from the ninth terminal 81 to the seventh terminal 61. This is necessary. Accordingly, two frames of 'frame 2' and 'frame 4' are allocated to the eighth terminal 71.

In other words, 'frame 1' is allocated to the seventh terminal 61 to generate a transmission channel for allowing the seventh terminal 61 to transmit transmission data to the eighth terminal 71, and 'frame 2' The eighth terminal 71 is assigned to the eighth terminal 71 to generate a transmission channel that allows the terminal 71 to relay the data to the ninth terminal 81. Meanwhile, 'frame 3' is allocated to the ninth terminal 81 to generate a transmission channel for causing the ninth terminal 81 to transmit transmission data to the eighth terminal 71, and 'frame 4' is assigned to the eighth terminal. The terminal 71 is allocated to the eighth terminal 71 to generate a transmission channel for relaying the corresponding data to the seventh terminal 61.

The above description is merely an example of an embodiment, and the present invention is not limited to the above-described embodiment and can be variously changed within the scope of the appended claims. For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

As described above, the wireless switching method and the wireless switching terminal apparatus of the present invention apply a complex division multiplexing transmission method including a CDMA method to a TDMA-based wireless LAN method, thereby ensuring an independent channel between users. The advantage is that a more stable currency can be implemented. In addition, by assigning a plurality of channels to one time slot, and by varying the operating method of the channels assigned to the time slot for each time slot, a terminal receiving a relay request from another terminal, while maintaining the existing call, There is an advantage that the relay can be performed between different terminals.

Claims (12)

A first process of designating a receiving terminal and transmitting a call request signal by an arbitrary terminal, and waiting for a response of the corresponding receiving terminal; A second process of modulating data to be transmitted by a CDMA method when a call response signal including channel information allocated to the receiving terminal is received from the receiving terminal; A third process of converting the data modulated by the CDMA method in the second process into a binary form; The binary CDMA modulated signal is divided into information blocks of a predetermined length, and each data block is added with synchronization information for time division transmission and frequency stabilization time information for frequency division transmission for each data block. Fourth process to produce, And a fifth process of transmitting the data transmission frame for multiplex transmission to the corresponding reception terminal based on the channel information included in the call response signal received from the reception terminal. Wireless communication method used. The method of claim 1, wherein the second process A wireless communication method using a multiplexed multiple access scheme, characterized in that the data to be transmitted is modulated by the number of transmission codes set for each subscriber among modulation codes commonly assigned to all users. The method of claim 1, wherein the third process is And adding the data of each modulated channel, and generating only CDMA modulated data in binary form by taking only the sign of the added value. The method of claim 3, wherein the third process is When the number of the modulated channel is even, the wireless communication method using a multiplexing multiple access method characterized in that the number of channels to be adjusted to an odd number by adding a separate virtual channel having a predetermined value. The method of claim 1, wherein the fourth process Step 4-1 of adding predetermined preamble information for time synchronization of a time-division frame to the front of the information block; Step 4-2 of adding delay time information to prevent data collision between time-division frames at the rear of the information block; And a fourth step of adding a predetermined stabilization time information for stabilizing the converted frequency when converting a frequency value for channel formation to the front of the information block. Way. The method of claim 1, A sixth step of flooding the relay request signal to all terminals if the response signal is not received from the designated receiving terminal for a predetermined time; A seventh process of generating a data transmission frame for complex division multiplexing by performing the third and fourth processes when a relay response signal including relayable channel information is received from an arbitrary terminal; And based on channel information included in the relay response signal, further comprising an eighth step of transferring the data transmission frame for multiplex multiplex transmission. The method of claim 6, wherein the seventh process If the terminal that has transmitted the relay response signal is already in communication with another terminal, the method may further include allocating a relay code for generating a relay channel to the terminal that has transmitted the relay response signal. Wireless communication method using multi-division multiple access method. An interface unit for performing an interface with a user, A modulator for modulating the data in a CDMA manner to transmit the data of multiple channels to be transmitted through one time slot, and then generating a data transmission frame for transmitting the CDMA modulated data in a complex division multiplex transmission scheme; , A transmitter for transmitting the modulated signal to the outside; A receiving unit for receiving data, A demodulator for demodulating data received through the receiver; A relay processing unit which receives the data including the relay request signal through the receiving unit, analyzes the signal to extract the final receiving terminal information, and relays the corresponding data to the receiving terminal through the transmitting unit; And a control unit for controlling the modulation unit, the relay processing unit, and the demodulation unit according to a processing command of a user input through the interface unit. The method of claim 8, wherein the modulator A CDMA signal generator for generating a CDMA modulated signal for each channel by multiplying each orthogonal code inputted to be modulated with a different orthogonal code; A channel determination unit which checks the number of input channels and adds a separate virtual channel having a predetermined value when the number of channels is even; A signal converter which adds the CDMA modulated signals and the channel value of the added virtual channel and takes only the sign of the added result to generate a binary CDMA modulated signal; A group code generator for generating a group code shared between terminals belonging to the same group to avoid interference between groups; A multiplier for multiplying the group code by a binary CDMA modulated signal output from the signal converter; A TDMA processing unit for dividing an output signal of the multiplication unit into information blocks of a predetermined length, and then adding predetermined data to the information blocks for transmitting the information blocks in a time division multiple access (TDMA) scheme; And an FDMA processing unit for adding predetermined data for transmitting the information block in a frequency division multiple access scheme to the information block output from the TDMA processing unit. The method of claim 8, wherein the demodulation unit A synchronous comparison unit for comparing and synchronizing the data inputted through the receiving unit to identify and receive only data transmitted to the self; A group code generator for generating a group code shared between the subscriber stations belonging to the same group to avoid interference between groups; A multiplier for multiplying the group code by the data received through the synchronous comparator and extracting only a pure modulated signal; And a CDMA demodulator for demodulating the modulated signal. The method of claim 8, wherein the relay processing unit A signal analyzer which analyzes the signal and extracts the final receiver terminal information when the data including the relay request signal is received through the receiver; A relay control unit which receives the relay request signal from the signal analysis unit, determines whether the relay is possible, sets a relay channel for relaying the corresponding data to the final receiving terminal, and controls a relay processing process; If the relay controller determines that relaying is possible, the transmitter transmits the relay response signal under the control of the relay controller, and relays the data to the final receiver terminal based on the final receiver terminal information extracted by the signal analyzer. And a response processing unit for controlling the wireless terminal apparatus. The method of claim 11, wherein the relay control unit After confirming the number of codes assigned to the terminal and the available transmission channel by the number of codes, if the transmission channel is already occupied, further characterized in that the terminal is further allocated to the code necessary for forming the relay channel A wireless terminal device supporting a composite division multiple access method.