KR100586729B1 - Wireless communication system and base station two-dimensional duplex device and mobile station two-dimensional duplex device thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal transmission and reception apparatus and method in a wireless communication system. In particular, an uplink channel and a downlink channel are downlinked in both a time domain and a frequency domain. The present invention relates to a wireless communication system using a 2-Dimensional Duplex Device and a scheme capable of adaptively allocating a Down-link Channel.

In the wireless communication system of the present invention, a signal frame transmitted between a mobile terminal and a base station includes an uplink channel allocated for signal transmission from the mobile terminal to the base station and a downlink channel and uplink allocated for signal transmission from the base station to the mobile terminal. And a preamble having channel allocation information of the link channel and the downlink channel. In addition, the uplink channel and the downlink channel are adaptively allocated to both the time domain and the frequency domain, and channel allocation information included in the preamble includes user information, time information, frequency information, and channel information allocated for each channel. to be.

TDD, FDD, DUPLEX, UP-LINK, DOWN-LINK, CHANNEL ALLOCATION

Description

WIRELESS COMMUNICATION SYSTEM AND BASE STATION TWO-DIMENSIONAL DUPLEX DEVICE AND MOBILE STATION TWO-DIMENSIONAL DUPLEX DEVICE THEREOF}

1 is a diagram illustrating a transmission frame structure of a conventional frequency division duplex scheme, and particularly, a frequency division duplex scheme combined with a time division multiple access scheme.

2 is a diagram illustrating a conventional time division duplex transmission frame structure.

3 is a diagram illustrating a transmission frame structure of a 2-Dimensional Duplex scheme proposed in the present invention.

4 is a view showing an embodiment of a base station duplex apparatus for implementing a two-dimensional duplex scheme of the present invention.

5 is a view showing an embodiment of a mobile terminal duplex apparatus for implementing a two-dimensional duplex method of the present invention.

FIG. 6 is a diagram illustrating channel allocation for each user according to a symbol and a subcarrier for a frequency domain of the transmission frame of the present invention shown in FIG.

The present invention relates to the transmission and reception of signals between a base station and a mobile station in a wireless communication environment, and particularly, a downlink channel for a transmission frame transmitted and received between a mobile station and a base station. -link) and an uplink channel (Allocation method).

In a wireless communication environment, a wireless channel for signal transmission between a base station (BS) and a mobile terminal (MS) may be divided into an uplink channel and a downlink channel. The uplink channel means a signal transmission channel from the mobile terminal MS to the base station BS, and the downlink channel means a signal transmission channel from the base station BS to the mobile terminal MS.

Meanwhile, a signal transmission / reception scheme in a wireless channel is conventionally divided into a frequency division duplex (FDD) scheme for allocating a channel based on a frequency domain according to an uplink channel and a downlink channel allocation scheme. There is a time division duplex (TDD) scheme for allocating channels based on a time domain. Each of the duplex schemes can be classified into three types according to the combined multiple user access schemes. That is, the FDD scheme may be classified into a time division multiple access (FDD-TDMA), a frequency division multiple access (FDD-FDMA), and a code division multiple access (FDD-CDMA) according to a multi-user access scheme. Even in the case of TDD-TDMA, TDD-FDMA and TDD-CDMA can be classified.

1 is a diagram illustrating a transmission frame structure of a conventional frequency division duplex scheme, and particularly, a frequency division duplex scheme combined with a time division multiple access scheme. As shown in FIG. 1, in the FDD-TDMA scheme, an uplink channel and a downlink channel are allocated within a corresponding bandwidth (BW) based on frequency. That is, in the FDD-TDMA scheme, the uplink channel and the downlink channel have different frequency bands previously assigned. Each mobile station (MS) performs signal transmission and reception with the base station (BS) through an uplink channel and a downlink channel in a time slot assigned thereto. That is, in the FDD-TDMA scheme, signals are transmitted and received only in a time domain allocated to each user through a predefined frequency band. Although not shown in the figure, the FDD-FDMA and FDD-CDMA also differ only from the FDD-TDMA shown in FIG.

As mentioned above, in the FDD scheme, the frequency bands that can be used as the uplink channel and the downlink channel are defined and fixed in advance, thus making it impossible to use an efficient channel according to the amount of signals to be transmitted. For example, when the signal to be transmitted from the mobile terminal MS to the base station BS is congested, while the downlink channel is empty because the amount of the signal to be transmitted from the base station BS to the mobile terminal MS is small. In addition, the signal transmitted from the mobile terminal MS to the base station BS can be transmitted only through an uplink channel of a fixed frequency band. Accordingly, channel allocation using the FDD scheme shown in FIG. 1 is a limiting factor in improving transmission performance of a wireless communication system. In addition, in the FDD scheme, a guard band in a frequency domain is required between the uplink channel and the downlink channel to prevent crosstalk of a signal. The use of such guard bands reduces the overall frequency usage efficiency.

2 is a diagram illustrating a conventional time division duplex transmission frame structure. As shown in FIG. 2, in the TDD scheme, each frame transmitted for a predetermined frequency band is allocated to an uplink channel and a downlink channel based on time. In the TDD scheme, a time slot to be used as a downlink channel or an uplink channel in each frame may be adaptively changed as necessary. In addition, a user area may be defined and allocated for each user by time, frequency, or code according to a multi-user access method combined with each channel. However, in the multi-cell structure using the TDD scheme of FIG. 2, adaptive channel allocation is partially limited due to interference caused by neighboring cells. Although not shown, there is a guard time in a time domain similar to the guard band in the FDD scheme in the TDD scheme, which is a factor in reducing signal transmission efficiency in a wireless communication system.

SUMMARY OF THE INVENTION An object of the present invention is to provide a two-dimensional duplex method and apparatus for adaptively allocating an uplink channel and a downlink channel in both a time domain and a frequency domain in a wireless communication system.

In the wireless communication system of the present invention, the signal frame transmitted between the mobile terminal and the base station is an uplink channel allocated for signal transmission from the mobile terminal to the base station and a downlink channel allocated for signal transmission from the base station to the mobile terminal. And a preamble having channel allocation information of the uplink channel and the downlink channel. In the wireless communication system of the present invention, the uplink channel and the downlink channel are adaptively allocated to both the time domain and the frequency domain, and channel allocation information included in the preamble of the present invention is assigned to each channel. Information, time information, frequency information, and channel information.

(Example)

3 is a diagram illustrating a transmission frame structure of a 2-Dimensional Duplex scheme proposed in the present invention. In FIG. 3, a frequency band BW including 32 frequency channels ch0 to ch31 is assumed. Each frequency channel consists of a plurality of subcarriers. Referring to FIG. 3, the transmission frame 300 proposed by the present invention includes uplink channels MS_U1, MS_U2, and MS_U3, downlink channels MS_D1, MS_D2, and MS_D3 and preambles 302 and preamble for each user. do.

Each user uplink channel (MS_U1, MS_U2, MS_U3) is assigned by the base station (BS), each user transmits a signal to the base station (BS) through the uplink channel assigned to them.

The downlink channels MS_D1, MS_D2, and MS_D3 for each user are also allocated by the base station BS, similarly to the uplink channels MS_U1, MS_U2, and MS_U3, and each user is assigned a base station (BS) through a downlink channel assigned to each user. Receive a signal transmitted from the BS).

The preamble 302 is generated by the two-dimensional duplex device of the base station (BS), is located in front of each transmission frame 300 is transmitted to the mobile terminal (MS) of each user. The preamble 302 includes channel allocation information of the uplink channel and the downlink channel for each user. The channel allocation information included in the preamble 302 includes information on which time domain and frequency domain for each user to transmit / receive a signal to and from the base station BS.

In the present invention, unlike the conventional FDD or TDD scheme, the signal transmission frame 300 may be adaptively allocated to the uplink channel and the downlink channel as needed for both the time domain and the frequency domain. That is, the frequency domain and the time domain to be used for transmission can be freely allocated according to the amount of signals to be transmitted for each user. For example, when there are many signals to be transmitted from the base station BS to the mobile terminal MS_3 of the user 3, a large portion of the transmission frame is allocated to the downlink channel MS_D3 of the user 3. That is, for all time domains (symbols) of the transmission frame, channels 11 through 20 of the frequency domains (subcarriers) are allocated to the downlink channel of user 3 to transmit signals.

4 is a view showing an embodiment of a base station duplex apparatus for implementing a two-dimensional duplex scheme of the present invention. Referring to FIG. 4, the base station duplex apparatus 400 largely includes a base station transmitter 420 for transmitting a signal to a mobile terminal MS, a base station receiver 430 for receiving a signal from the mobile terminal MS, and a channel for each user. Generate allocation information (S _{U, A, m, t} , S _{D, A, m, t} ), and generate the channel allocation information (S _{U, A, m, t} , S _{D, A, m, t} ). The base station duplex mapping unit 410 controls signal transmission through the base station transmitter 420 and the base station receiver 430 by using the base station duplex mapping unit 410. On the other hand, the channel assignment information (S _{U, A, m, t} , S _{D, A, m, t} ) includes uplink channel assignment information (S _{U, A, m, t} ) and downlink channel assignment information (S _{D, A, m, t} ), and the uplink channel allocation information (S _{U, A, m, t} ) transmits the t-th symbol for the time domain from the m-th mobile terminal (MS) to the A-th base station (BS). Means a subcarrier allocated for The downlink channel allocation information _{SD, A, m, t} denotes a subcarrier allocated to transmit the t-th symbol for the time domain from the A-th base station BS to the m-th mobile terminal MS. .

)한다. 병/직렬 변환기(408)는 역고속 퓨리에 변환된 신호들(x_D,_A,m,n)을 직렬 신호로 변환하여 이동 단말기로 전송한다.The base station transmitter 420 includes a serial / parallel converter 402, a transmission downlink mapper 404, an inverse fast Fourier transformer 406, and a parallel / serial converter 408. The serial / parallel converter 402 converts a serial signal input from an internal signal processing apparatus of the base station BS into a parallel signal X _D , _{A, m, p} . The transmit downlink mapper 404 is provided with the parallel signals X _D , _{A, m, and p} , where p = {0, 1, 2, ..., N _{D, A, m, t} −1}, and N _{D, A, m, t} is the number of transmission symbols of the t-th symbol transmitted from the A-th base station to the m-th mobile terminal.) from the duplex mapping unit 410. (X _{D, A, m, k} = Dtx_MAP (X _{D, A, m, p} )) in the time and frequency domains included in the allocation information S _{D, A, m, t} . The inverse fast Fourier transformer 406 receives the mapping signals (X _D , _{A, m, k} : downlink channels) from the transmitting downlink mapper 404 to the m th mobile terminal through the k th subcarrier in the downlink channel. Inverse fast Fourier transform (only signals corresponding to downlink channel allocation information (S _{D, A, m, t} ) input from the duplex mapping unit 410 using a signal to be transmitted)

)do. The parallel / serial converter 408 converts the inverse fast Fourier transformed signals x _D , _{A, m, n} into serial signals and transmits them to the mobile terminal.

The base station receiver 430 includes a serial / parallel converter 412, a fast Fourier transformer 414, a receive uplink mapper 416, and a parallel / serial converter 418. The serial / parallel converter 412 converts the signals y _U , _{A, m} received from the mobile terminal MS into parallel signals y _U , _{A, m, n} . The signal received from the mobile terminal may be expressed as Equation 1 below.

y _{U, A, m} = H _{U, A, m} ㆍ x _{U, A, m} + N _{U, A, m}

(However, H _{U, A, m} is the attenuation characteristic of the transmission channel between the m-th mobile terminal and the A-th base station in the uplink.)

)한다. 수신 업링크 맵핑기(416)는 고속 퓨리에 변환기(414)에 의해 변환된 신호들(

)을 듀플렉스 맵핑부(410)로부터의 업링크 채널 할당 정보(S_U,A,m,t)를 이용하여 업링크 채널 할당 정보(S_U,A,m,t)에 포함된 시간과 주파수 영역에 맵핑(

= Urx_MAP(

))시킨다. 병/직렬 변환기(412)는 수신 업링크 맵핑기(416)로부터의 신호(

)를 직렬 신호로 변환하여 내부 신호 처리장치로 입력한다.(단, p={0, 1, 2, ..., N_U,A,m,t-1}이고, N_U,A,m,t는 m번째 이동 단말기로부터 A번째 기지국으로 전송하는 t번째 심벌의 전송 심벌수이다.)The fast Fourier transformer 414 receives uplink channel allocation information S _{U, A,} which is input from the duplex mapping unit 410 among the signals y _U , _{A, m, n} inputted from the serial / parallel converter 412 _. Fast Fourier transform only signals corresponding to _{m, t} )

)do. The receive uplink mapper 416 converts signals converted by the fast Fourier transformer 414.

Time and frequency domain included in the uplink channel allocation information (S _{U, A, m, t} ) using the uplink channel allocation information (S _{U, A, m, t} ) from the duplex mapping unit 410. To

= Urx_MAP (

)) The parallel / serial converter 412 receives the signal from the receive uplink mapper 416.

) Is converted into a serial signal and input to the internal signal processing device (where p = {0, 1, 2, ..., N _{U, A, m, t} -1} and N _{U, A, m). , t} is the number of transmission symbols of the t th symbol transmitted from the m th mobile terminal to the A base station.)

5 is a view showing an embodiment of a mobile terminal duplex apparatus for implementing a two-dimensional duplex method of the present invention. Referring to FIG. 5, the mobile terminal duplex apparatus 500 largely includes a mobile station transmitter 520 for transmitting a signal to a base station BS, and a mobile station receiver 530 and a base station BS for receiving signals from the base station BS. Duplex mapping unit 510 for controlling signal transmission through mobile station transmitter 520 and mobile station receiver 530 using channel allocation information (S _{U, A, m, t} , S _{D, A, m, t} ) It consists of

)한다. 병/직렬 변환기(508)는 역고속 퓨리에 변환된 신호들(x_U,_A,m,n)을 직렬 신호(x_U, _A,m)로 변환한다.The mobile station transmitter 520 includes a serial / parallel converter 502, a transmission uplink mapper 504, an inverse fast Fourier transformer 506, and a parallel / serial converter 508. The serial / parallel converter 502 converts a serial signal input from the internal signal processing device of the mobile terminal MS into a parallel signal X _U , _{A, m, p} . The transmission uplink mapper 504 transmits the parallel signals X _U , _{A, m, and p} input from the serial / parallel converter 502 uplink channel allocation information S _U, from the duplex mapping unit 510 _{. a, m, t)} uplink channel allocation information (S _{U, a, m,} map the parallel signals to a time-frequency region contained in the _{t) (X U, a,} m, k = Utx_MAP (X U by using the _{, A, m, p} )). The inverse fast Fourier transformer 506 receives uplink channel allocation information input from the duplex mapping unit 510 using the signals X _U , _{A, m, k} mapped by the transmission uplink mapper 504. Inverse fast Fourier transform of signals (X _U , _{A, m, k} ) corresponding to (S _{U, A, m, t} )

)do. The parallel / serial converter 508 converts the inverse fast Fourier transformed signals x _U , _{A, m, n} into a serial signal x _U , _{A, m} .

The mobile station receiver 530 includes a serial / parallel converter 512, a fast Fourier transformer 514, a receive downlink mapper 516, and a parallel / serial converter 518. The serial / parallel converter 512 converts the signals y _D , _{A, m} received from the base station BS into parallel signals y _D , _{A, m, n} . At this time, the signal (y _D , _{A, m} ) received from the base station is expressed as Equation 2 below.

y _{D, A, m} = H _{D, A, m} ㆍ x _{D, A, m} + N _{D, A, m}

(However, H _{D, A, m} are attenuation characteristics of the transmission channel between the A base station and the m mobile terminal in the downlink.)

)한다. 수신 다운링크 맵핑기(516)는 고속 퓨리에 변환기(514)에 의해 변환된 신호들(

)을 듀플렉스 맵핑부(510)로부터의 다운링크 채널 할당 정보(S_D,A,m,t)를 이용하여 다운링크 채널 할당 정보(S_D,A,m,t)에 포함된 시간과 주파수 영역에 맵핑(

= Drx_MAP(

))시킨다. 병/직렬 변환기(512)는 수신 다운링크 맵핑기(516)로부터의 신호(

)를 직렬 신호로 변환하여 내부 신호 처리장치로 입력한다.The fast Fourier transformer 514 receives signals (y _D , _{A, m, n} ) input from the serial / parallel converter 512 from the downlink channel allocation information (S _{D, A,} Fast Fourier Transform ( _{m, t} )

)do. Receive downlink mapper 516 converts signals converted by fast Fourier transformer 514.

) The assigned downlink channel from the duplex mapping unit 510, information _{(S D, A, m,} t) by using a downlink channel allocation information _{(S D, A, m,} t) of the time and frequency domain included in the To

= Drx_MAP (

)) The parallel / serial converter 512 receives the signal from the receive downlink mapper 516.

) Is converted into a serial signal and input to the internal signal processing device.

Hereinafter, signal transmission and reception between a base station and a mobile terminal will be described in detail with reference to FIGS. 4 and 5.

)는 수신 다운링크 맵핑기(516)에 의해 맵핑되어 병/직렬 변환기(518)로 입력된다. 이 때, 수신 다운링크 맵핑기(516)는 듀플렉스 맵핑부(510)로부터 입력되는 다운링크 채널 할당 정보(S_D,A,m,t)를 이용하여 맵핑동작을 수행한다. 이렇게 맵핑된 신호(

)는 병/직렬 변환기(518)를 통해 직렬 신호로 변환되어 이동 단말기의 내부 신호 처리장치로 입력된다.First, data transmission and reception from the base station 400 through the downlink to the mobile terminal 500 is performed by the base station transmitter 420 and the mobile station receiver 530. The serial / parallel converter 402 of the base station transmitter 402 converts the serial signal input from the internal signal processing apparatus of the base station into parallel signals X _D , _{A, m, and p} and outputs the parallel signals. Parallel signals X _D , _{A, m, p} from the serial / parallel converter 402 are mapped by the transmit downlink mapper 404 and input to the inverse fast Fourier transformer 406. At this time, the transmission downlink mapper 404 performs the mapping operation using the downlink channel allocation information S _{D, A, m, t} from the duplex mapping unit 410 as described above. The signals X _D , _{A, m, k} mapped by the transmit downlink mapper 404 are inverse fast Fourier transforms (x _D , _{A, m, n} ) by an inverse fast Fourier transformer 406 and Via the / serial converter 408 to the mobile terminal 500 in the form of a serial signal (x _D , _{A, m} ). The mobile station receiver 530 of the mobile terminal 500 receives the serial signal from the base station transmitter 420. At this time, the signal (y _{D, A, m} ) received by the mobile station receiver 530 includes a noise component including the attenuation component of the transmission channel as shown in Equation 2 above. The signals y _{D, A, m} received by the mobile station receiver 530 are converted back into parallel signals y _D , _{A, m, n} through the serial / parallel converter 512, and the fast Fourier transformer 514. Fast Fourier transform is input to the receiving downlink mapper 516. The fast Fourier transformer 514 converts only the signal corresponding to the downlink channel allocation information (S _{D, A, m, t} ) input from the duplex mapping unit 510 by the fast Fourier transformer 514. Converted signal (

) Is mapped by receive downlink mapper 516 and input to parallel / serial converter 518. At this time, the reception downlink mapper 516 performs a mapping operation by using the downlink channel allocation information _{SD, A, m, t} input from the duplex mapping unit 510. This mapped signal (

) Is converted into a serial signal through a parallel / serial converter 518 and input to the internal signal processing device of the mobile terminal.

)는 수신 업링크 맵핑기(416)에 의해 맵핑되 어 병/직렬 변환기(418)로 입력된다. 이 때, 수신 업링크 맵핑기(416)는 듀플렉스 맵핑부(410)로부터 입력되는 업링크 채널 할당 정보(S_U,A,m,t)를 이용하여 맵핑동작을 수행한다. 이렇게 맵핑된 신호(

)는 병/직렬 변환기(418)를 통해 직렬 신호로 변환되어 이동 단말기의 내부 신호 처리장치로 입력된다.Data transmission and reception from the mobile terminal 500 to the base station 400 via the uplink is performed by the mobile station transmitter 520 and the base station receiver 430. The serial / parallel converter 502 of the mobile station transmitter 502 converts and outputs a serial signal input from the internal signal processing apparatus of the mobile terminal 500 into parallel signals X _U , _{A, m, and p} . Parallel signals X _U , _{A, m, p} from the serial / parallel converter 502 are mapped by the transmit uplink mapper 504 and input to the inverse fast Fourier transformer 506. At this time, the transmission uplink mapper 504 performs the mapping operation using the uplink channel allocation information (S _{U, A, m, t} ) from the duplex mapping unit 510 as mentioned above. The signals X _U , _{A, m, k} mapped by the transmit uplink mapper 504 are inverse fast Fourier transforms (x _U , _{A, m, n} ) by the inverse fast Fourier transformer 506, and / Serial converter 508 is transmitted to the base station 400 in the form of a serial signal (x _U , _{A, m} ). The base station receiver 430 of the base station 400 receives the serial signal from the mobile station transmitter 520. At this time, the signal (y _{U, A, m} ) received by the base station receiver 430 includes a noise component including the attenuation component of the transmission channel as shown in Equation 1 above. The signals (y _{U, A, m} ) received by the base station receiver 430 are converted back into parallel signals (y _U , _{A, m, n} ) through the serial / parallel converter 412 and the fast Fourier transformer 414. Fast Fourier transform is input into the receiving uplink mapper (416). The fast Fourier transformer 414 converts only the signal corresponding to the uplink channel allocation information (S _{U, A, m, t} ) input from the duplex mapping unit 410 by the fast Fourier transformer 414. Signals (

) Is mapped by the receive uplink mapper 416 and input to the parallel / serial converter 418. At this time, the reception uplink mapper 416 performs a mapping operation by using the uplink channel allocation information (S _{U, A, m, t} ) input from the duplex mapping unit 410. This mapped signal (

) Is converted into a serial signal through the parallel / serial converter 418 and input to the internal signal processing device of the mobile terminal.

FIG. 6 is a diagram illustrating channel allocation for each user according to a symbol and a subcarrier for a frequency domain of the transmission frame of the present invention shown in FIG. In FIG. 6, for convenience of description, a transmission frame having a bandwidth composed of nine subcarrier channels is assumed. In FIG. 6, each number represents a user-specific division, and a hatched portion is a portion allocated to an uplink channel, and another portion is a portion allocated to a downlink channel.

As mentioned above, the duplex apparatus of the present invention uses the channel allocation information (S _{U, A, m, t} , S _{D, A, m, t} ) from the duplex mapper of the base station to time-domain each user frame. Adaptive allocation is necessary for both the and frequency domains. For example, in the t th symbol for the time domain of FIG. 6, the first user transmits a signal to the base station using the fifth subcarrier for the frequency domain, and receives a signal from the base station using the third and sixth subcarriers. do. That is, the fifth subcarrier is allocated to the uplink channel for the first user in the t th symbol, and the third and sixth subcarriers are allocated to the downlink channel. Similarly, in the t symbol, the second and eighth subcarriers are assigned to the uplink channel for the second user, the seventh subcarrier is assigned to the downlink channel, and the first subcarrier is the uplink channel for the third user, and the fourth and ninth. Subcarriers have been allocated to the downlink channel.

Such channel allocation using the duplex method of the present invention can be used in all multi-user access methods (TDMA, FDMA, CDMA). That is, it is possible to use not only time division multiple access (TDMA) and frequency division multiple access (FDMA) but also code division multiple access (CDMA).

In the above, the two-dimensional duplex method and apparatus according to the present invention has been described above with reference to the above drawings, but this is merely exemplary and various applications and modifications can be made without departing from the spirit of the present invention.

As described above, the two-dimensional duplex method and apparatus of the present invention can improve frequency usage efficiency and data transmission efficiency by adaptively changing the uplink channel and the downlink channel when transmitting and receiving data through a wireless channel.

Claims (26)

In a wireless communication system comprising a mobile terminal and a base station, The transmitting and receiving device of the mobile terminal, A mobile station transmitter for transmitting a signal to the base station; A mobile station receiver for receiving a signal from the base station; And The signal frame received through the mobile station receiver includes a preamble, and includes a mobile station duplex mapping unit for controlling transmission and reception of signals between the mobile station transmitter and the mobile station receiver according to channel allocation information included in the preamble; The signal frame is an uplink channel allocated for signal transmission from the mobile terminal to the base station, a downlink channel allocated for signal transmission from the base station to the mobile terminal, and the uplink channel and the downlink channel. And the preamble including channel allocation information of the preamble. The method of claim 1, The channel assignment information is generated by the base station transceiver and included in the preamble and input to the mobile terminal. The method of claim 1, And wherein the preamble is located at the front of the signal frame . The method of claim 1, The uplink channel and the downlink channel are adaptively allocated to both the time domain and the frequency domain, and channel allocation information included in the preamble includes user information, time information, frequency information, and the like allocated to the respective channels. Wireless communication system, characterized in that the channel information. The method of claim 4, wherein The mobile station transmitter comprises: a serial / parallel converter for converting a serial signal input from an internal signal processing apparatus of the mobile terminal into a parallel signal; A mobile station transmission uplink mapper which inputs channel allocation information from the mobile station duplex mapping unit and maps the parallel signals to time and frequency domains included in the channel allocation information; An inverse fast Fourier transformer for inversely fast Fourier transforming the signal from the mobile station transmit uplink mapper; And And a bottle / serial converter for converting the signal converted by the inverse fast Fourier transformer into a serial signal. The method of claim 5, The inverse fast Fourier transformer performs inverse fast Fourier transform on only signals in time and frequency domains included in the channel allocation information among the signals mapped by the mobile station transmission uplink mapper using the channel allocation information as an input. Wireless communication system. The method of claim 4, wherein The mobile station receiver includes a serial / parallel converter for converting a serial signal from a base station into a parallel signal; A fast Fourier transformer for transforming the parallel signal with a fast Fourier transform; A mobile station receiving downlink mapper which inputs channel allocation information from the mobile station duplex mapping unit and maps only parallel signals corresponding to time and frequency domains included in the channel allocation information among the fast Fourier transformed parallel signals; And And a parallel / serial converter for converting the signal mapped by the mobile station receiving downlink mapper into a serial signal and inputting the signal to an internal signal processing apparatus of the mobile terminal. The method of claim 7, wherein The fast Fourier transformer inputs the channel allocation information and performs fast Fourier transform on only signals in time and frequency domains included in the channel allocation information among parallel signals received from the serial / parallel converter. Communication system. The method of claim 1, The base station transceiver includes: a base station transmitter for transmitting a signal to the mobile terminal; A base station receiver for receiving a signal from the mobile terminal; And And a base station duplex mapping unit for generating the channel allocation information and controlling a signal transmitted and received through the base station transmitting unit and the base station receiving unit according to the channel allocation information. The method of claim 9, The base station transmitter comprises: a serial / parallel converter for converting a serial signal input from an internal signal processing apparatus of the base station into a parallel signal; A base station transmission downlink mapper which inputs channel allocation information from the base station duplex mapping unit and maps the parallel signals to time and frequency domains included in the channel allocation information; An inverse fast Fourier transformer for inverse fast Fourier transforming the signal from the base station transmission downlink mapper; And And a parallel / serial converter for converting the signal converted by the inverse fast Fourier transformer into a serial signal. The method of claim 10, The inverse fast Fourier transformer inputs the channel allocation information and performs inverse fast Fourier transform on only signals in time and frequency domains included in the channel allocation information among signals mapped by the base station transmission downlink mapper. Wireless communication system. The method of claim 9, The base station receiver includes a serial / parallel converter for converting a serial signal from a mobile terminal into a parallel signal; A fast Fourier transformer for transforming the parallel signal with a fast Fourier transform; A base station receiving uplink mapper which inputs channel allocation information from the base station duplex mapping unit and maps only parallel signals corresponding to time and frequency domains included in the channel allocation information among the fast Fourier transformed parallel signals; And And a parallel / serial converter for converting the signal mapped by the base station receiving uplink mapper into a serial signal and inputting the signal into an internal signal processing apparatus of the base station. The method of claim 12, The fast Fourier transformer inputs the channel allocation information and performs fast Fourier transform on only signals in time and frequency domains included in the channel allocation information among parallel signals received from the serial / parallel converter. Communication system. A base station duplex apparatus of a wireless communication system, A base station transmitter for transmitting a signal to the mobile terminal using a downlink channel; A base station receiver for receiving a signal from the mobile terminal through an uplink channel; And A duplex mapping unit for generating channel allocation information of the downlink channel and the uplink channel and controlling signals transmitted and received through the base station transmitter and the base station receiver according to the channel assignment information, And the channel allocation information is user information, time information, frequency information, and channel information allocated for each of the downlink channel and the uplink channel. The method of claim 14, And the channel allocation information is transmitted from the base station to the mobile terminal. The method of claim 14, And the channel allocation information is located in front of each signal frame transmitted between the base station and the mobile terminal. The method of claim 14, The base station transmitter comprises: a serial / parallel converter for converting a serial signal input from an internal signal processing apparatus of the base station into a parallel signal; A base station transmission downlink mapper which inputs channel allocation information from the base station duplex mapping unit and maps the parallel signals to a time domain and a frequency domain included in the channel assignment information; An inverse fast Fourier transformer for inverse fast Fourier transforming the signal from the base station transmission downlink mapper; And And a parallel / serial converter converting the signal converted by the inverse fast Fourier transformer into a serial signal. The method of claim 17, The inverse fast Fourier transformer inputs the channel allocation information and performs inverse fast Fourier transform on only signals in time and frequency domains included in the channel allocation information among signals mapped by the base station transmission downlink mapper. Base station duplex apparatus. The method of claim 14, The base station receiver includes a serial / parallel converter for converting a serial signal from a mobile terminal into a parallel signal; A fast Fourier transformer for transforming the parallel signal with a fast Fourier transform; A base station receiving uplink mapper which inputs the channel allocation information and maps only parallel signals corresponding to a time domain and a frequency domain included in the channel allocation information among the fast Fourier-transformed parallel signals; And And a parallel / serial converter converting the signal mapped by the base station receiving uplink mapper into a serial signal and inputting the serial signal to the internal signal processing apparatus of the base station. The method of claim 19, The fast Fourier transformer performs fast Fourier transform on only signals in time domain and frequency domain included in the channel allocation information among the parallel signals received from the serial / parallel converter by inputting the channel allocation information. Base station duplex device. A mobile terminal duplex apparatus of a wireless communication system, A mobile station transmitter for transmitting a signal to an base station of the wireless communication system using an uplink channel; A mobile station receiver configured to receive a signal transmitted from a base station through a downlink channel; And A duplex mapping unit configured to receive channel allocation information of the downlink channel and the uplink channel from the base station and control signals transmitted and received through the mobile station transmitter and the mobile station receiver according to the channel assignment information, And the channel allocation information is user information, time information, frequency information, and channel information allocated for each of the downlink channel and the uplink channel. The method of claim 21, And the channel assignment information is located at the front of each signal frame transmitted between the base station and the mobile terminal. The method of claim 21, The mobile station transmitter may include a serial / parallel converter for converting a serial signal input from an internal signal processing apparatus of the mobile terminal into a parallel signal; A mobile station transmission uplink mapper which inputs the channel allocation information and maps the parallel signals to a time domain and a frequency domain included in the channel assignment information; An inverse fast Fourier transformer for inversely fast Fourier transforming the signal from the mobile station transmit uplink mapper; And And a parallel / serial converter for converting the signal converted by the inverse fast Fourier transformer into a serial signal. The method of claim 23, wherein The inverse fast Fourier transformer performs inverse fast Fourier transform on only signals in time and frequency domains included in the channel allocation information among the signals mapped by the mobile station uplink mapper using the channel allocation information as an input. Mobile terminal duplex device. The method of claim 21, The receiver may include a serial / parallel converter for converting a serial signal from a base station into a parallel signal; A fast Fourier transformer for transforming the parallel signal with a fast Fourier transform; A mobile station receiving downlink mapper configured to map only parallel signals corresponding to a time domain and a frequency domain included in the channel assignment information among the fast Fourier-transformed parallel signals as inputs; And And a parallel / serial converter for converting the signal mapped by the mobile station receiving downlink mapper into a serial signal and inputting the serial signal to the internal signal processing device of the mobile terminal. The method of claim 25, The fast Fourier transformer performs fast Fourier transform on only signals in time domain and frequency domain included in the channel allocation information among the parallel signals received from the serial / parallel converter by inputting the channel allocation information. Mobile terminal duplex device.

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