KR101742494B1 - Wireless Ethernet transmission apparatus and method for traffic transmitting in the apparatus - Google Patents

Abstract

The present invention relates to a wireless Ethernet transmission apparatus and a traffic transmission method thereof, and more particularly, to a wireless Ethernet transmission apparatus and a traffic transmission method thereof, A transmitter for amplifying the coupled signal and transmitting the amplified signal through an antenna, a low noise amplifying unit for removing low frequency noise from the signal received through the antenna by removing a frequency outside the receiving band, Determining a mode of each modem by using a traffic amount and a propagation environment for each direction, determining a channel and a traffic amount for each modem so that each modem operates in the determined mode, Modems having the same timing are subjected to a switching signal for performing the same mode operation It is a control unit, a switch for switching to each modem performs a transmitting or receiving operation according to the switching signal from the control unit.
Therefore, according to the present invention, it is possible to eliminate a performance degradation factor that may occur when a low-cost wireless LAN modem is combined, thereby enabling large-capacity wireless transmission, and in the case where transmission and reception occur simultaneously, different modems do not use adjacent channel frequencies You can place the frequency automatically to use the frequency of the band.

Description

TECHNICAL FIELD [0001] The present invention relates to a wireless Ethernet transmission apparatus and a method for transmitting traffic in the wireless Ethernet transmission apparatus.

The present invention relates to a wireless Ethernet transmission apparatus and a method of transmitting traffic in the apparatus. More particularly, the present invention relates to a wireless Ethernet transmission apparatus, To a wireless Ethernet transmission apparatus in which each modem performs a transmission or reception operation in accordance with a switching signal, and a traffic transmission method in the apparatus.

The mobile communication network should ensure seamless service of data traffic while ensuring mobility of the terminal. For these services, service providers usually build and use dedicated networks. However, the construction of such a dedicated network is costly in terms of initial construction cost and network maintenance cost. Therefore, in order to reduce the cost, a base station using Ethernet as a dedicated network is increasingly using an apparatus for transmitting Ethernet wirelessly. These solutions are wireless Ethernet transmitters and use a variety of frequency bands ranging from the 5 GHz license-exempt band, the 10 GHz or higher microwave band, and the 70 to 80 GHz mm wave band.

Among them, the wireless Ethernet transmission device using the 5 GHz license-exempt band is widely used because it can produce a low-cost equipment by using a low-cost wireless LAN modem as it is through mass production.

The 5GHz wireless Ethernet transmission device mainly uses time division multiplexing technique, and the use bandwidth ranges from 20MHz to 40MHz.

1 is a diagram illustrating a conventional 5 GHz wireless Ethernet transmission apparatus.

Referring to FIG. 1, a wireless Ethernet transmission apparatus 100 includes a modem 100, an amplifier (AMP) 120, a switch 130, an antenna 150, and a low noise amplifier (LNA)

The modem 110 modulates a digital transmission signal into an analog transmission signal and transmits the modulated transmission signal to the amplifier 120. The modem 110 demodulates the analog reception signal received through the antenna 140 into a digital signal . In addition, the modem 110 generates a switching signal and applies the switching signal to the switch 130 so as to transmit or receive a signal through the antenna 140.

The amplifier 120 amplifies a transmission signal from the modem 110 through the antenna 140.

The low noise amplifier 150 low-noise amplifies the received signal received through the antenna 140 and transmits the amplified signal to the modem 110.

The switch 130 switches the modem to operate in a transmission mode or a reception mode in accordance with a switching signal from the modem 110.

However, there may be a method of using a plurality of modems in order to increase the capacity of the wireless Ethernet transmission apparatus configured as described above. In the case where another modem receives the transmission timing of one modem because the transmission / There is a problem that the transmission signal affects the reception signal and the quality deteriorates.

SUMMARY OF THE INVENTION The present invention is conceived to solve the problems described above, and it is an object of the present invention to provide a wireless Ethernet transmission apparatus capable of eliminating interference between modems and synchronizing transmission and reception in a wireless Ethernet transmission apparatus combined with a plurality of modems, And to provide a traffic transmission method.

It is another object of the present invention to provide a wireless Ethernet transmission apparatus that enables large-capacity wireless transmission by combining a low-cost wireless LAN modem and a traffic transmission method in the apparatus.

It is still another object of the present invention to provide a wireless Ethernet transmission apparatus capable of automatically allocating frequencies so that different modems can use a frequency of a band without using an adjacent channel frequency when transmission / reception occurs at the same time, And to provide a traffic transmission method.

According to an aspect of the present invention, there is provided a communication system including a plurality of modems operating as a transmission modem or a reception modem and coupling transmission signals from a plurality of modems and a transmission modem for modulating or demodulating a transmission signal or a reception signal, Amplifies the low noise amplified signal by distributing the low noise amplified signal to each reception modem according to the traffic amount determined by the control unit, A mode of each modem is determined by using a traffic amount and a propagation environment for each direction, a channel and a traffic amount for each modem are determined so that each modem operates in the determined mode, and the modems using adjacent channels A control section for applying a switching signal for performing the same mode operation at a timing, The Wireless Ethernet transmission apparatus in which each modem is a switch for switching to perform the transmission or reception operation is provided according to the switching signal from the.

The plurality of modems operate as Full Duplex or Half Duplex according to a mode determined by the controller.

When the modems operate in Full Duplex mode, at least one of the plurality of modems operates as a transmission modem, and at least one of the plurality of modems operates as a reception modem, and the modems using the adjacent channels operate in the same mode at the same timing. From the control unit, and performs the same operation of transmission or reception.

When the modems operate as Half Duplex, the plurality of modems operate only as a transmission modem at the same timing or operate only as a receiving modem.

The transmitter includes a combiner for receiving and coupling the traffic distributed and transmitted from the respective transmission modems, and an amplifier for amplifying the coupled signal and transmitting the amplified signal through the antenna.

The receiver includes a reception filter for removing a frequency outside the reception band from a signal received through the antenna, a low noise amplifier for low-noise amplifying the output signal of the reception filter, a low noise amplifier for amplifying the low noise amplified signal, And a distributor for distributing it to the modem.

The controller determines a mode of each modem according to a ratio of the amount of traffic to be transmitted and the amount of traffic to be received.

In addition, the control unit allocates different frequency bands to the plurality of modems, and automatically scans the channels with the least interference in the allocated frequency bands and allocates them to the respective modems.

Also, the controller determines the amount of traffic to be distributed to each modem based on the number of packets received without errors most recently for each modem in consideration of the radio environment.

Also, the controller obtains the degree of goodness of each channel by using the number of access points (APs) and the interference signal RSSI for each channel, computes the goodness ratio of each channel with respect to all channels to the total traffic amount, The amount of traffic to be determined.

In addition, the control unit controls the output of each modem to adjust to be the same EIRP.

According to another aspect of the present invention, there is provided a method for transmitting traffic by a wireless Ethernet transmission apparatus including a plurality of modems, the method comprising the steps of: (a) determining a mode of each modem based on traffic volume and propagation environment for each direction; (b) determining a channel and a traffic amount for each modem so that each modem operates in the determined mode, and each modem performing a transmission or reception operation according to a switching signal, the method for transmitting traffic in a wireless Ethernet transmission device / RTI >

If the modems operate in Full Duplex according to the determined mode in the step (b), selecting a channel in a good order of channel scan results and sequentially allocating the channel to each of the transmit modems, determining a traffic amount of the transmit modems And allocating a channel other than the channel allocated to the transmitting modems to a channel of the receiving modem, and transmitting and receiving the traffic simultaneously at the same timing by the transmitting modem and the receiving modem according to the switching signal Wherein the modems using adjacent channels perform the same mode of operation of transmitting or receiving at the same timing.

The traffic volume of the transmit modems is obtained based on the number of packets received most recently without error for each transmit modem.

Also, the traffic amount of the transmission modems is obtained by calculating the degree of goodness of each channel using the number of access points (APs) and the interference signal RSSI for each channel, and calculating the goodness ratio of each channel for all channels to the total traffic amount .

In the step (b), when the modems operate in a Half Duplex according to the determined mode, a channel is selected in order of a good channel scan result, and the channels are sequentially allocated to the respective modems. And performing an operation in which each modem transmits or receives only the distributed traffic at the same timing in accordance with the switching signal.

As described above, according to the present invention, it is possible to eliminate interference between modems in a wireless Ethernet transmission apparatus combined with a plurality of modems, and synchronize transmission and reception.

In addition, it is possible to implement a solution capable of high-capacity wireless transmission by eliminating the performance degradation factors that may occur when a low-cost wireless LAN modem is combined.

In addition, when transmitting / receiving occurs at the same time, different modems can automatically arrange the frequencies so that they can use the frequencies of the adjacent band without using adjacent channel frequencies.

1 illustrates a conventional 5 GHz wireless Ethernet transmission device.
2 is a schematic diagram of a configuration of a wireless Ethernet transmission apparatus according to the present invention;
FIG. 3 is a flowchart illustrating a method for transmitting a traffic by a wireless Ethernet transmission apparatus combined with a plurality of modems according to the present invention.

The foregoing and other objects, features, and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

2 is a diagram schematically illustrating a configuration of a wireless Ethernet transmission apparatus according to the present invention.

2, the wireless Ethernet transmission apparatus 200 includes a plurality of modems 220a, 220b, .., 220n (hereinafter referred to as 220) for modulating or demodulating a transmission signal or a reception signal, a transmission signal from a transmission modem A transmission unit 230 for transmitting the signal through the antenna 260, a reception unit 240 for transmitting a signal received through the antenna 260 to the reception modem, and a component for controlling the components of the wireless Ethernet transmission device 200 And a switch 250 for switching each modem to perform a transmission or reception operation in accordance with a switching signal from the controller 210. [

The plurality of modems 220 operate as a transmission modem or a reception modem according to a mode determined by the controller 210, and modulate a transmission signal or demodulate a reception signal.

That is, when the mode determined by the controller 210 is a transmission mode, the modem converts the digital transmission signal from the controller 210 into an analog form and transmits the converted signal to the transmitter 230.

When the mode determined by the controller 210 is a reception mode, the modem converts the analog signal received from the receiver 240 into a digital form and transmits the digital signal to the controller 210.

In other words, the plurality of modems 220 operate in Full Duplex or Half Duplex according to the mode determined by the controller 210. [

When the modems operate as Full Duplex, at least one of the plurality of modems operates as a transmission modem and at least one operates as a reception modem. At this time, the modems using the adjacent channel receive the switching signal for performing the same operation at the same timing from the controller 210, and perform the same operation of transmission or reception.

In addition, when the modems operate in a half duplex mode, the plurality of modems operate only as a transmission modem at the same timing or operate only as a receiving modem.

The transmitter 230 couples the transmission signal from the transmission modem and amplifies the coupled signal and transmits the amplified signal through the antenna 260. The transmitter 230 includes a coupler 232 and an amplifier 234 do.

The coupler 232 couples the transmission signals from the respective modems. That is, the combiner 232 combines the distributed traffic transmitted from the transmission modems.

The amplifier 234 amplifies the signal coupled by the coupler 232 and transmits the amplified signal through the antenna 260.

The receiving unit 240 low-noise amplifies the received signal by removing the out-of-band frequency from the signal received through the antenna 260, and distributes the low-noise amplified signal to each receiving modem according to the traffic amount determined by the controller 210 do.

The receiving unit 240 includes a receiving filter 242, a low noise amplifier 244, and a distributor 246. The reception filter 242 removes an out-of-band frequency from the signal received through the antenna 260 and transmits the frequency to the low-noise amplifier 244. That is, the reception filter 242 removes a frequency outside the reception band from the reception signal, thereby preventing saturation due to the transmission signal.

The low noise amplifier 244 low-noise amplifies the output signal of the reception filter 242 and transmits the amplified signal to the distributor 246.

The distributor 246 distributes the low noise amplified signal to each receiving modem according to the amount of traffic determined by the controller 210.

The controller 210 determines a mode of each modem based on traffic volume and propagation environment for each direction, and allocates a frequency band and a channel in the frequency band so that each modem operates in the determined mode. At this time, the control unit 210 controls the modems using adjacent channels to perform the same operation of transmission or reception by applying a switching signal for performing the same operation at the same timing.

That is, the control unit 210 determines the total amount of traffic to be transmitted and the amount of received traffic, and checks the available channels by scanning the channels for each modem. Then, the controller 210 determines each modem as a transmission modem or a reception modem according to the ratio of the amount of traffic to be transmitted and the amount of reception traffic, and allocates the corresponding traffic to the determined transmission modem or reception modem. At this time, the controller 210 obtains the degree of goodness of each channel using the number of access points (APs) and the interference signal RSSI for each channel, and calculates the goodness ratio of each channel with respect to all the channels, Determine the amount of traffic to distribute to the modem.

For example, when the amount of traffic to be transmitted is X, and the number of APs (Y) and the interference signal RSSI (Z) for each channel are present as a result of the channel scan, the controller 210 calculates aY + bZ Constant) for each channel. Then, the control unit 210 divides the total traffic X into the sum of the obtained degree of goodness of all the channels and distributes the divided traffic to each modem. At this time, since the controller 210 first distributes the data in a transmission-oriented manner, and in the case of reception, it is difficult to accurately predict in the transmitter. Therefore, when ACK is large based on the ACK signal at the immediately preceding timing, Channel, and allocates a channel having a low degree of goodness, assuming that the traffic is small when ACK is small.

In addition, the controller 210 allocates different frequency bands to the respective determined modems, and automatically scans the channels with the least interference in the allocated frequency bands, and allocates the scanned channels to the respective modems. At this time, the controller 210 allocates the modems to use different frequency bands not adjacent to each other in the 5 GHz band to simultaneously perform transmission / reception while eliminating inter-modem interference.

In other words, when the transmission and reception are concurrently performed, the control unit 210 allocates frequency bands and channels so that different modems do not use the adjacent channel frequencies but use the channels of the separated bands. This is to avoid transmission and reception from acting as mutual interference when transmission and reception occur simultaneously in adjacent channels.

For the method of allocating the channel by the controller 210, the channel scan results are f1, f2, ... fn in the order of the good channel, the weight factors indicating the channel goodness are w1, w2, ... wn, The case where the traffic amount to be transmitted is T and the traffic amount that is expected to be received is R will be described as an example.

When only transmission traffic exists at a specific timing, the controller 210 allocates f1, which is the best channel scan result, to the first modem and T * w1 / (w1 + w2 + ... + wn ). The control unit 210 allocates a channel f2 to the second modem and T * w2 / (w1 + w2 + ... + wn) as the transmission traffic and allocates the channel fn to the nth modem and T * wn / w1 + w2 + ... + wn). At this time, the weight factor is obtained by combining the received signal strength obtained as a result of scanning the entire frequency band and the number of other APs, and determines that the total sum is 1.

Next, if both the transmission traffic and the reception traffic exist at a specific timing, the control unit 210 first determines how to allocate the entire modem according to the ratio of T and R.

That is, when the number of transmission mode modems is x, the total number of modems is n, and the number of reception mode modems is y, the controller 210 calculates a relation (T: R = x: y To obtain x and y.

Then, the controller 210 allocates different channels to the x transmission modems. That is, the controller 210 selects x channels from the channels in order of channels having a good scan result, and obtains the goodness values w1, ..., wx of the selected channels. Find wx. In other words, the control unit 210 determines w1 = w1 / w1 + w2 + ... + wx, w2 = w2 / w1 + w2 + / (w1 + w2 + ... + wx).

Then, the controller 210 allocates T * w`1 / (w`1 + w`2 + .. + w`x) as the transmission traffic to the transmission modem 1 by allocating the channel f1 having the best channel scan result to the transmission modem 1 Assigns f2 to the second transmit modem, and assigns fx to the xth transmit modem as T * w`2 / (w`1 + w`2 + ... + w`x) T * w`x / (w`1 + w`2 + ... + w`x).

As described above, the controller 210 assigns different channels and traffic to x transmission modems.

Then, the control unit 210 allocates channels from the channels fn-x to fn to the remaining y modems of the entire modems, and causes them to operate in the reception mode.

According to the above-described method, the controller 210 allocates a frequency band and a channel so that different modems do not use the adjacent channel frequency when the transmission and reception occur simultaneously at a specific timing.

In addition, the controller 210 determines the amount of traffic to be distributed to each modem based on the number of packets received without errors most recently for each modem in consideration of the radio environment. That is, the controller 210 determines a traffic amount to be distributed to each modem in a method of allocating a large amount of traffic to a modem having the latest number of packets received without error most recently.

The control unit 210 generates a switching signal so that all the modems transmit and receive traffic in synchronization with each other and switch the switch 250 according to the synchronization and outputs the switching signals to the respective modems 220 and 250 .

Also, the controller 210 controls the output of each modem to adjust the EIRP (Effective Isotropically Radiared Power). That is, since the wireless Ethernet transmission apparatus 200 uses the same antenna and there is a difference in antenna gain in each frequency band, the controller 210 controls the outputs of the respective modems so as to adjust to be the same EIRP. The EIRP refers to the final output of the antenna port output and the antenna gain summed to the free space. Since the controller 210 has different antenna gain in each frequency band, the output of each modem is controlled Adjust to be the same EIRP.

Hereinafter, the operation of the control unit 210 will be described taking the wireless Ethernet transmission apparatus 200 using the 5 GHz license-exempt band as an example.

Considering the frequency band of 5 GHz, the wireless Ethernet transmission apparatus 200 can combine up to four modems. In this case, four 40 MHz band channels are automatically detected and configured for transmission / reception in the B band (5.35 to 5.45), C band (5.45 to 5.65), and D band (5.75 to 5.85) The control unit 210 controls the switching signal to prevent transmission and reception at the same time.

If two channels are simultaneously transmitted and received in the same band, the transmitted signal may interfere with the received signal, resulting in quality deterioration.

To prevent this, the same band-use modems need to synchronize transmission and reception. To this end, the controller 210 buffers the traffic itself, and controls the other modems to transmit traffic when one modem is in the transmission timing.

For example, if N modems are distributed in three bands of B, C, and D bands and the modems using each channel are B1, B2, .., Bn, C1 ... Cn, D1..Dn , And a case where transmission and reception are simultaneously performed will be described.

B, B, and Bn allocated to the B-band are synchronized with each other. If a large amount of traffic is received and transmitted at a time other than the ACK signal, the B-, C-, and D- Transmission and reception can occur separately.

In addition, there is a difference in antenna gain in the B, C, and D bands, and the same antenna should be used, so the EIRP should be adjusted. In the D band, 20dBi can be used for point-to-point communication. However, since the B and C bands need to use 6dBi, the control unit 210 controls the modem using the B and C bands to reduce the output by 14dB.

That is, when using the 5.725-5.825 GHz band in the 5 GHz band to be used, a 20 dBi antenna can be used for the point-to-point communication, and a 6 dBi antenna should be used for the point-to-multipoint communication. Since the antenna can not be dynamically adjusted during operation as hardware, adjust the output so that the total EIRP is the same. For example, if a modem selects one channel from 5.725 to 5.825 GHz as a result of a channel scan and transmits 10 mW / MHz as the original output when the terminal has a service to be served by itself, In case of 20-6 = 14dBi, the output is automatically reduced and transmitted.

As a result, the wireless Ethernet transmission apparatus 200 configured as described above can freely switch between Full Duplex and Half Duplex. When a transmission / reception occurs at the same time, different modems do not use an adjacent channel frequency, .

The wireless Ethernet transmission apparatus 200 refers to a device installed between a base station and a user terminal.

FIG. 3 is a flowchart illustrating a method for transmitting traffic by a wireless Ethernet transmission apparatus combined with a plurality of modems according to the present invention.

Referring to FIG. 3, the wireless Ethernet transmission apparatus determines the mode of the modems based on the traffic amount and the propagation environment for each direction (S302), and determines whether the modems operate in Full Duplex or Half Duplex (S304).

As a result of the determination in step S304, if the wireless Ethernet transmission apparatus operates in Full Duplex mode, the wireless Ethernet transmission apparatus allocates a frequency band and a channel in the frequency band so that each modem operates in the determined mode (S306). Here, the operation of the Full Duplex means that transmission and reception occur at the same time. In order to avoid mutual interference between the transmission and the reception, the wireless Ethernet transmission apparatus uses different adjacent modems, And allocates the frequency band and the channel to use the channel.

After performing step S306, the wireless Ethernet transmission apparatus determines a traffic amount to be allocated to each modem (S308), and distributes the traffic to each modem according to the determined traffic amount (S310). At this time, the wireless Ethernet transmission apparatus determines the amount of traffic to be distributed to each modem based on the number of packets received most errorlessly for each modem in consideration of a wireless environment.

Also, the wireless Ethernet transmission apparatus determines the degree of goodness of the channels allocated to the modems, and determines the amount of traffic to be distributed to each modem based on the sum of the degree of goodness of the obtained all channels and the degree of goodness of the corresponding channel.

When the step S310 is performed, the wireless Ethernet transmission device simultaneously transmits or receives the corresponding traffic according to the applied switching signal (S312). At this time, if there are modems using adjacent channels, the wireless Ethernet transmission device controls the modems using adjacent channels to perform the same operation of transmission or reception at the same timing.

If it is determined in operation S304 that the wireless Ethernet transmission apparatus operates in the Half Duplex mode, the wireless Ethernet transmission apparatus allocates a frequency band and a channel in the frequency band so that each modem operates in the determined mode in operation S314. Here, the operation of the Half Duplex refers to a case where only transmission or reception is performed at the same timing.

After performing step S314, the wireless Ethernet transmission device determines the amount of traffic to be distributed to each modem based on the number of packets received without error most recently for each modem (S316), and transmits the amount of traffic to each modem And distributes the traffic (S318).

In step S320, the wireless Ethernet transmission device performs an operation in which each modem only transmits or receives the distributed traffic according to an applied switching signal.

The wireless Ethernet transmission apparatus having a plurality of modems coupled thereto can eliminate the interference between the modems and synchronize transmission and reception.

Thus, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

As described above, the wireless Ethernet transmission apparatus and the traffic transmission method in the apparatus of the present invention enable large-capacity wireless transmission by eliminating the performance degradation factors that may occur when a low-cost wireless LAN modem is combined, This is appropriate when different modems need to automatically allocate frequencies so that they can use the frequencies of the distant bands without using adjacent channel frequencies.

100, 200: wireless Ethernet transmission device 110, 220: modem
120, 234: amplifier 130, 250: switch
140, 260: antenna 150, 244: low noise amplifier
210: control unit 232: coupler
242: Receive filter 246: Distributor

Claims (16)

A plurality of modems operating as a transmission modem or a reception modem and modulating or demodulating a transmission signal or a reception signal;
A transmitter for coupling the transmission signal from the transmission modem, amplifying the coupled signal and transmitting the amplified signal via an antenna;
A receiver for removing the frequency band outside the reception band from the received signal to perform low noise amplification and distributing the low noise amplified signal to each receiving modem according to a determined traffic volume;
And determines the mode of each modem according to the ratio of the amount of traffic to be transmitted and the amount of received traffic, and determines the number of access points (APs) for each channel so that each modem operates in the determined mode The degree of goodness of each channel is calculated by using the interference signal RSSI, the amount of traffic to be distributed to each modem is determined by calculating the goodness ratio of each channel with respect to the entire channel to the total traffic amount, A control unit for applying a switching signal for performing the same mode operation at the same timing; And
A switch for switching each modem to transmit or receive according to the switching signal;
Lt; / RTI > The method according to claim 1,
Wherein the plurality of modems operate in Full Duplex or Half Duplex according to a mode determined by the controller. 3. The method of claim 2,
When the modems operate in Full Duplex mode, at least one of the plurality of modems operates as a transmission modem, and at least one of the plurality of modems operates as a reception modem, and the modems using the adjacent channels operate in the same mode at the same timing. Receives the control signal from the control unit, and performs the same operation of transmission or reception. 3. The method of claim 2,
Wherein when the modems operate in a Half Duplex mode, the plurality of modems operate only as a transmission modem at the same timing or operate only as a receiving modem. The method according to claim 1,
Wherein the transmitter comprises: a combiner for receiving and transmitting the traffic distributed and transmitted from the respective transmission modems; And
And an amplifier for amplifying the coupled signal and transmitting the amplified signal through the antenna. The method according to claim 1,
Wherein the reception unit comprises: a reception filter for removing a frequency outside a reception band from a signal received through the antenna; And
A low noise amplifier for low noise amplifying an output signal of the reception filter; And
And a distributor for distributing the low-noise amplified signal to each reception modem according to a traffic amount determined by the control unit. delete The method according to claim 1,
Wherein the control unit assigns different frequency bands to the plurality of modems, and automatically scans the channels with the least interference in the allocated frequency bands and allocates them to the respective modems. The method according to claim 1,
Wherein the controller determines a traffic amount to be distributed to each modem based on the number of packets received without errors most recently for each modem in consideration of a wireless environment. delete The method according to claim 1,
Wherein the control unit controls the outputs of the respective modems to adjust to be the same EIRP. Claim 12 is abandoned in setting registration fee. A method for transmitting a traffic by a wireless Ethernet transmission apparatus to which a plurality of modems are coupled,
Determining a mode of each modem according to a ratio of the amount of traffic to be transmitted and the amount of traffic to be received;
The degree of goodness of each channel is obtained using the number of access points (APs) and the interference signal RSSI for each channel so that each modem operates in the determined mode, and the degree of goodness of each channel for all channels is calculated Determining the amount of traffic to be distributed to each modem; And
Modems using adjacent channels are applied with switching signals for performing the same mode operation at the same timing
The method comprising the steps of: Claim 13 has been abandoned due to the set registration fee. 13. The method of claim 12,
Wherein the step of determining the amount of traffic comprises:
If the modems operate in Full Duplex according to the determined mode, selecting channels in descending order of channel scan results and sequentially allocating them to each of the transmit modems;
Determining and allocating a traffic volume of the transmit modems; And
Allocating channels other than the channels allocated to the transmission modems to channels of the reception modem
Wherein applying the switching signal comprises:
The transmitting modem and the receiving modem simultaneously transmitting or receiving the corresponding traffic at the same timing according to the switching signal; And
Modems using adjacent channels perform the same mode operation of transmission or reception at the same timing
The method comprising the steps of: (a) transmitting a traffic indication message to the wireless terminal device; Claim 14 has been abandoned due to the setting registration fee. 14. The method of claim 13,
Wherein the traffic volume of the transmission modems is calculated based on the number of packets received most recently without error for each transmission modem. delete Claim 16 has been abandoned due to the setting registration fee. 13. The method of claim 12,
Wherein the step of determining the amount of traffic comprises:
If the modems operate in a Half Duplex according to the determined mode, selecting channels in descending order of channel scan results and sequentially allocating them to the respective modems; And
Determining and allocating a traffic volume to be distributed to each modem
Wherein applying the switching signal comprises:
And performing an operation of only transmitting or receiving the distributed traffic at the same timing by each modem according to the switching signal.

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