JPWO2019176086A1 - Wireless communication device, wireless communication system and transmission power control method - Google Patents

Abstract

Provided are a wireless communication device, a wireless communication system, and a transmission power control method capable of controlling transmission power for each carrier wave reflecting distortion caused by an actual amplifier or transmission line and improving communication quality.
Communication is performed using the frequency hopping method, and the transmission processing unit (110) includes the prerequisite power characteristic information that is the premise of calculating the transmission power in the transmission frame, and uses the transmission power set by the transmission power control unit (110). The transmission power control unit (120) transmits to the other device, updates the prerequisite power characteristic information and adjusts the transmission power based on the error information for the own device fed back from the other device, and adjusts the transmission power (110). The wireless communication device, wireless communication system, and transmission power control method set in.

Description

The present invention relates to a wireless communication device that performs wireless communication by a frequency hopping method, and particularly in a high frequency power supply device used in a plasma processing device, wireless communication capable of improving communication quality by performing appropriate transmission power correction. The present invention relates to an apparatus, a wireless communication system, and a transmission power control method.

[Explanation of prior art]
As a transmitting device and a receiving device for digital wireless communication, a wireless communication device that performs wireless transmission using a frequency hopping method has become widespread. The frequency hopping method is a method of wireless transmission in which a radio modulation frequency (carrier frequency) is switched at a specific cycle by a frequency synthesizer to perform wireless transmission.

In a wireless communication device using a conventional frequency hopping method, a fixed transmission power control value corresponding to each carrier frequency is set in advance in the transmission unit, and transmission is adjusted for each frequency based on the transmission power control value. I am trying to transmit with electric power.

[Related technology]
Examples of the wireless communication device using the frequency hopping method include Patent No. 5841462 "Gateway wireless communication device, wireless communication system, and communication control method" (Patent Document 1) and Japanese Patent No. 382395 "Wireless receiving device and There is a "wireless communication method" (Patent Document 2).

Patent Document 1 provides a period for performing each procedure of communication data acquisition, communication quality measurement, communication quality data acquisition, and channel switching in a wireless communication system using frequency hopping, and within the time limit set for each process. It is described that the transmission of communication data is prevented from being delayed by executing each process and executing all the processes in one cycle.

In Patent Document 2, data slots are extracted for frames of wireless data received from a wireless transmission device that generates wireless data having a configuration in which data slots having the same contents are included in a plurality of different frames and transmits the data slots by a frequency hopping method. The waveform equalization processing is performed and the equalization error power of the data symbols constituting the data slot is calculated, and the data symbol having the smallest equalization error power among the data symbols at the same position of the same data slot included in different frames. A wireless receiver that selects and demolishes is described.

Japanese Patent No. 5841462 Japanese Patent No. 382395

However, in the conventional wireless communication device, the transmission power control value of each carrier frequency is a fixed value, and the transmission power is not appropriately controlled by reflecting the distortion caused by the actual amplifier or transmission line, and good communication is performed. There was a problem that quality may not be obtained.

The present invention has been made in view of the above circumstances, and is a wireless communication device capable of controlling transmission power for each carrier wave by reflecting distortion caused by an actual amplifier or transmission line, and improving communication quality. , A wireless communication system and a transmission power control method.

The present invention for solving the problems of the above-mentioned conventional example is a wireless communication device that communicates by using a frequency hopping method, generates a transmission frame from transmission data, and communicates with the transmission frame with a set transmission power. A transmission processing unit that wirelessly transmits to the device and a transmission power control unit that outputs the prerequisite power characteristic information that is the premise of the transmission power to the transmission processing unit and sets the transmission power based on the prerequisite power characteristic information in the transmission processing unit. The transmission processing unit includes the prerequisite power characteristic information in the transmission frame and transmits the transmission, and the transmission power control unit updates the prerequisite power characteristic information based on the error information for the own device included in the reception frame received from the remote device. However, it is a wireless communication device that sets the transmission power based on the updated prerequisite power characteristic information in the transmission processing unit.

Further, the present invention is the above-mentioned wireless communication device in which the prerequisite power characteristic information corresponds to each carrier frequency switched by the frequency hopping method.

Further, in the above wireless communication device, the present invention includes a reception processing unit that extracts a reception frame from a reception signal and demodulates it, and a prerequisite power characteristic information and measurement that measures power characteristics from the reception signal and demodulates the reception processing unit. It is equipped with an information determination unit that calculates the difference by comparing with the obtained power characteristics and outputs the difference as error information for the other device to the transmission processing unit, and the transmission processing unit sends the error information for the other device to the transmission frame. It is the above-mentioned wireless communication device that includes and transmits.

Further, in the present invention, the transmission processing unit divides the transmission data into a plurality of data slots, generates a transmission frame so that the data slots having the same contents are included in a plurality of different transmission frames, and the reception processing unit receives the data. A data slot composed of data symbols is extracted from the frame, waveform equalization processing of the data slot is performed, the quality of the data symbol constituting the data slot is calculated, and a plurality of identical data included in different received frames are performed. For the slots, the quality of each data symbol is compared, the data symbol having the best quality is selected, and the data slot is reconstructed and demolished as the wireless communication device.

Further, the present invention is a wireless communication system in which a first wireless communication device and a second wireless communication device communicate using a frequency hopping method, and the first wireless communication device is premised on transmission power. The prerequisite power characteristic information is included in the transmission frame and transmitted to the second wireless communication device with the transmission power based on the prerequisite power characteristic, and the error for the first wireless communication device fed back from the second wireless communication device. It is a device that updates the prerequisite power characteristic information and adjusts the transmission power based on the information, and the second wireless communication device demolishes the received signal from the first wireless communication device and extracts the prerequisite power characteristic information. At the same time, the power characteristics are measured from the received signal, the demodulated power characteristic information is compared with the measured power characteristics to calculate the difference, and the difference is used as the first error information for the wireless communication device. It is a wireless communication system that feeds back to the wireless communication device of.

Further, the present invention is a device in which the first wireless communication device divides transmission data into a plurality of data slots and generates transmission frames so that data slots having the same contents are included in a plurality of different transmission frames. When the second wireless communication device demolishes the received signal, the data slot composed of the data symbol is extracted from the received frame, the waveform equalization processing of the data slot is performed, and the data symbol constituting the data slot is performed. A device that calculates the quality, compares the quality of each data symbol for multiple identical data slots contained in different receive frames, selects the data symbol with the best quality, reconstructs the data slot, and demolishes it. It is the above-mentioned wireless communication system.

Further, the present invention is a transmission power control method in a wireless communication system in which a first wireless communication device and a second wireless communication device communicate with each other by using a frequency hopping method. , The prerequisite power characteristic information that is the premise of calculating the transmission power is included in the transmission frame and transmitted to the second wireless communication device with the transmission power based on the prerequisite power characteristic, and the second wireless communication device performs the first wireless communication. The received signal from the device is demoted to extract the prerequisite power characteristic information, the power characteristic is measured from the received signal, and the demodulated prerequisite power characteristic information is compared with the calculated power characteristic to calculate the difference. , The difference is fed back to the first wireless communication device as error information for the first wireless communication device, and the first wireless communication device feeds back the error for the first wireless communication device from the second wireless communication device. Based on the information, the prerequisite power characteristic information is updated and the transmission power is adjusted as a transmission power control method.

Further, in the present invention, the first wireless communication device divides the transmission data into a plurality of data slots and generates a transmission frame so that the data slots having the same contents are included in the plurality of different transmission frames, and the second method. When the device demolishes the received signal, it extracts the data slot composed of the data symbol from the received frame, performs the waveform equalization processing of the data slot, and calculates the quality of the data symbol constituting the data slot. As the transmission power control method described above, the quality of each data symbol is compared for a plurality of the same data slots included in different reception frames, the data symbol having the best quality is selected, and the data slot is reconstructed and demolished. There is.

According to the present invention, it is a wireless communication device that communicates by using a frequency hopping method, and is a transmission processing unit that generates a transmission frame from transmission data and wirelessly transmits the transmission frame to the other device with a set transmission power. The transmission processing unit is provided with a transmission power control unit that outputs the prerequisite power characteristic information that is the premise of the transmission power to the transmission processing unit and sets the transmission power based on the prerequisite power characteristic information in the transmission processing unit. The characteristic information is included in the transmission frame and transmitted, and the transmission power control unit updates the prerequisite power characteristic information based on the error information for the own device included in the reception frame received from the remote device, and the updated prerequisite power characteristic information. Since it is a wireless communication device that sets the transmission power based on the above to the transmission processing unit, the transmission power is adjusted as needed according to the actual power characteristics that reflect the influence of the amplifier and transmission line, and the appropriate transmission power is set. This has the effect of improving communication quality.

Further, according to the present invention, in the above wireless communication device, since the prerequisite power characteristic information is a wireless communication device corresponding to each carrier frequency switched by the frequency hopping method, even if the carrier frequency is switched, the actual power is actually changed. Appropriate transmission power can be set according to the power characteristics, which has the effect of improving communication quality.

Further, according to the present invention, in the wireless communication device, the transmission processing unit divides the transmission data into a plurality of data slots and generates a transmission frame so that the data slots having the same contents are included in the plurality of different transmission frames. Then, the reception processing unit extracts the data slot composed of the data symbol from the received frame, performs the waveform equalization processing of the data slot, calculates the quality of the data symbol constituting the data slot, and differs the received frame. For multiple identical data slots included in, the quality of each data symbol is compared, the data symbol with the best quality is selected, and the data slot is reconstructed and demolished. It has the effect of preventing burst-like data errors due to switching of carrier frequencies in the system and improving the quality of wireless communication.

Further, according to the present invention, the first wireless communication device and the second wireless communication device are wireless communication systems in which communication is performed by using a frequency hopping method, and the first wireless communication device is a transmission power. The prerequisite power characteristic information, which is the premise of the above, is included in the transmission frame, transmitted to the second wireless communication device with the transmission power based on the prerequisite power characteristic, and the first wireless communication device fed back from the second wireless communication device. It is a device that updates the prerequisite power characteristic information and adjusts the transmission power based on the error information, and the second wireless communication device demolishes the received signal from the first wireless communication device and the prerequisite power characteristic information. Is extracted, the power characteristics are measured from the received signal, the demodulated power characteristic information is compared with the measured power characteristics to calculate the difference, and the difference is used as the error information for the first wireless communication device. Since the wireless communication system is a device that feeds back to the first wireless communication device, the first wireless communication device determines the influence of the amplifier and the transmission path based on the information fed back from the second wireless communication device. The transmission power can be adjusted at any time according to the reflected actual power characteristics, and an appropriate transmission power can be set, which has the effect of improving the communication quality.

Further, according to the present invention, the first wireless communication device and the second wireless communication device are a transmission power control method in a wireless communication system in which communication is performed by using a frequency hopping method, and the first wireless communication. The device includes the prerequisite power characteristic information that is the premise of calculating the transmission power in the transmission frame and transmits the transmission power based on the prerequisite power characteristic to the second wireless communication device, and the second wireless communication device is the first. The received signal from the wireless communication device is demoted to extract the prerequisite power characteristic information, the power characteristic is measured from the received signal, and the demodulated prerequisite power characteristic information is compared with the calculated power characteristic to compare the difference. The difference is calculated and fed back to the first wireless communication device as error information for the first wireless communication device, and the first wireless communication device is fed back from the second wireless communication device. Since the transmission power control method is used to update the prerequisite power characteristic information and adjust the transmission power based on the error information, the first wireless communication device is based on the information fed back from the second wireless communication device. , The transmission power can be adjusted at any time according to the actual power characteristics reflecting the influence of the amplifier and the transmission line, and an appropriate transmission power can be set, which has the effect of improving the communication quality.

It is a schematic block diagram of the wireless communication system using this wireless communication device. It is a block diagram of the wireless communication device A. It is a block diagram of the wireless communication device B (20). It is explanatory drawing of the transmission power control table. It is a block diagram which shows the structure of the transmission processing part. It is a block diagram which shows the structure of the reception processing part. It is a block diagram of the transmission part of another wireless communication device. It is a block diagram of the structure of the receiving part of another wireless communication device. It is explanatory drawing which shows the transmission frame in another wireless communication device. It is explanatory drawing of the selection method of the received data symbol of another wireless communication device.

Embodiments of the present invention will be described with reference to the drawings.
[Outline of Embodiment]
The wireless communication device (the present wireless communication device) according to the embodiment of the present invention is a wireless communication device using a frequency hopping method in a time division multiple access (TDMA) communication method, and is a transmitting side. In the device of, the power amplifier of the transmitter and the information of the power characteristic based on the expected transmission line characteristics are transmitted according to the carrier frequency, and the power characteristic of the received signal is measured in the device on the receiving side. , The error is determined by comparing with the power characteristic information transmitted from the transmitting side, and the error information is transmitted to the transmitting side device as feedback error information, and the transmitting side device is based on the fed-back error information. The transmission power is adjusted, and the transmission power in the device on the transmitting side can be finely adjusted based on the power characteristics actually measured on the receiving side, and the communication quality can be improved.

Further, the present wireless communication device can further prevent burst-like data errors caused by switching of the radio modulation frequency in frequency hopping.

[Outline of wireless communication system using this wireless communication device: Fig. 1]
Before explaining the configuration of the wireless communication device, a wireless communication system using the wireless communication device (the wireless communication system) will be briefly described. FIG. 1 is a schematic configuration diagram of the wireless communication system.
As shown in FIG. 1, this wireless communication system is a system in which wireless communication device A (10) and wireless communication device B (20) perform wireless communication. The wireless communication device A (10) and the wireless communication device B (20) are the present wireless communication devices.

The wireless communication device A (10) includes a transmission unit 11 and a reception unit 12, and the wireless communication device B (20) includes a transmission unit 21 and a reception unit 22. Here, for the sake of simplicity, the wireless communication device A (10) and the wireless communication device B (20) have the same configuration.

The wireless signal transmitted from the transmitting unit 11 of the wireless communication device A (10) is received by the receiving unit 22 of the wireless communication device B (20), and is transmitted from the transmitting unit 21 of the wireless communication device B (20). The signal is received by the receiving unit of the wireless communication device A (10).
That is, the other device for the wireless communication device A (10) is the wireless communication device B (20), and the other device for the wireless communication device B (20) is the wireless communication device A (10).

Then, as a feature of this wireless communication device, the wireless communication device A (10) is fed back from the wireless communication device B (20), and the transmission power of the transmission unit 11 is adjusted based on the information received by the reception unit 12. Similarly, the wireless communication device B (20) is fed back from the wireless communication device A (10) and adjusts the transmission power of the transmission unit 21 based on the information received by the data reception unit 22.
The information to be fed back will be described later.

[Configuration of wireless communication device A (10): FIG. 2]
Next, the configuration of the wireless communication device A will be described with reference to FIG. FIG. 2 is a block diagram of the wireless communication device A.
As shown in FIG. 2, the wireless communication device A (10) includes a transmission unit 11 and a reception unit 12 as described above.
Further, the transmission unit 11 includes a transmission processing unit 110 and a transmission power control unit 120, and the reception unit 12 includes a reception processing unit 130 and an information determination unit 140.
Here, the transmission power control unit 120 and the information determination unit 140 are characteristic parts of the wireless communication device.

Each part of the wireless communication device A (10) will be described.
The transmission processing unit 110 of the transmission unit 11 performs various signal processing on the transmission data to generate a transmission frame and transmit the transmission frame. The specific configuration of the transmission processing unit 110 will be described later.

The transmission power control unit 120 is a characteristic part of the wireless communication device, and controls the transmission power based on the information fed back from the remote device (here, the wireless communication device B (20)), and also provides information on the power characteristics. To manage.
Specifically, the transmission power control unit 120 stores information on power characteristics (premise power characteristics) set in advance as a premise and transmission power calculated based on the information for each carrier frequency.
The prerequisite power characteristic is a power characteristic predicted in consideration of the non-linear distortion caused by the power amplifier used in the transmission processing unit 110 and the distortion caused by the characteristic of the transmission line, and is expressed as a distortion value. The transmission power is determined based on the prerequisite power characteristics.

Then, the transmission power control unit 120 outputs the value of the prerequisite power characteristic (prerequisite power characteristic information) corresponding to the carrier frequency to the transmission processing unit 110, includes it in the transmission frame, and includes the other device (wireless communication device B (20)). ), And the transmission power calculated based on the prerequisite power characteristic is set in the transmission processing unit 110.

Further, the transmission power control unit 120 is based on the information (error information for own device, here, error information for device A) fed back from the remote device (wireless communication device B (20)) included in the received reception frame. , The prerequisite power characteristic information is updated, the transmission power is determined based on the updated prerequisite power characteristic information, and the transmission power in the transmission processing unit 110 is changed.
The operation of the transmission power control unit 120 will be described later.

That is, in the transmission unit 11 of the wireless communication device, the transmission power control unit 120 outputs the prerequisite power characteristic information corresponding to the carrier frequency to the transmission processing unit 110, and the transmission power based on the prerequisite power characteristic information is transmitted. Set to 110, the transmission processing unit 110 includes the prerequisite power characteristic information in the transmission frame and transmits the set transmission power to the other device, and the transmission power control unit 120 includes the reception frame received from the other device. The prerequisite power characteristic information is updated based on the error information for the own device, and the transmission power based on the updated prerequisite power characteristic information is set in the transmission processing unit 110.

As a result, the transmission power control unit 120 can update the prerequisite power characteristic information at any time by reflecting the power characteristics affected by the actual amplifier and propagation path for each carrier frequency, and adaptively adjusts the transmission power. , Communication quality can be improved.

The reception processing unit 130 of the reception unit 12 performs various signal processing on the received signal, demodulates the received signal, and extracts the received data. The specific configuration of the reception processing unit 130 will be described later.
The information determination unit 140 is a characteristic part of the wireless communication device, and measures the actual power characteristics based on the received signal. Here, the power characteristic is a distortion characteristic.
Then, the information determination unit 140 compares the prerequisite power characteristic information included in the received data received from the remote device (wireless communication device B (20)) with the measured power characteristic value, obtains the difference, and feeds back. The error information (error information for the other device, in this case, the error information for the device B) is transmitted to the other device (wireless communication device B (20)) via the transmission processing unit 110.

That is, in the reception unit 12 of the wireless communication device, the reception processing unit 130 takes out the reception frame from the reception signal and demodulates it, the information determination unit 140 measures the power characteristic from the reception signal, and the reception processing unit 130 demodulates it. The difference is calculated by comparing the prerequisite power characteristic information with the measured power characteristic, and the difference is output to the transmission processing unit 110 of the transmission unit 11 as error information for the partner device.
Then, the transmission processing unit 110 includes the error information for the other device input from the information determination unit 140 in the transmission frame and transmits the error information to the other device.
As a result, in the other device, the prerequisite transmission power is updated and the transmission power is adjusted according to the actual power characteristics as described above.
The operation of the information determination unit 140 will be described later.

[Operation of wireless communication device A (10): FIG. 2]
The operation of the wireless communication device A (10) will be briefly described with reference to FIG. Here, for the sake of simplicity, the wireless communication device A (10) will be referred to as a device A, and the wireless communication device B (20) will be referred to as a device B.
In the device A, when the carrier frequency is specified by frequency hopping at the time of transmission, the transmission power control unit 120 performs a transmission process to transmit the prerequisite power characteristic information corresponding to the carrier frequency to the device B which is the other device. The power is output to the unit 110, the transmission power is determined based on the prerequisite power characteristic, and the transmission processing unit 110 is instructed.
The transmission processing unit 110 adds prerequisite power characteristic information to the input transmission data and transmits the input transmission power to the device B with the instructed transmission power.

At the time of reception, the reception signal transmitted from the device B is demodulated by the reception processing unit 130, the received data, the prerequisite power characteristic information input by the transmission processing unit of the device B which is the other device, and further feedback from the device B. The error information for the device A (error information for the own device) is extracted.

Then, the information determination unit 140 measures the power characteristic of the received signal and compares it with the prerequisite power characteristic information obtained from the received signal. Then, the difference is fed back from the transmission processing unit 110 to the device B as the error information for the device B (error information for the other device).
Further, the transmission power control unit 120 updates the prerequisite power characteristic information based on the received error information for the device A, and adjusts the transmission power when transmitting from the own device.
In this way, the operation of the wireless communication device A (10) is performed.

That is, at the time of transmission, the wireless communication device adds information on the prerequisite power characteristics managed by the power control unit 120 to the transmission data, and transmits the transmission power based on the prerequisite power characteristics from the transmission processing unit 110. is there.

Further, in this wireless communication device, at the time of reception, the information determination unit 140 measures the power characteristic of the received signal, and the reception processing unit 130 compares the assumed power characteristic information from the other device and the measured power characteristic. The difference is obtained, and the difference is transmitted from the transmission processing unit 110 to the other device together with the transmission data as error information for the other device, and the transmission power control unit 120 is based on the error information for the own device fed back from the other device. The transmission power is adjusted.

[Structure of wireless communication device B (20): FIG. 3]
Next, the configuration of the wireless communication device B (20) will be described with reference to FIG. FIG. 3 is a block diagram of the wireless communication device B (20).
As shown in FIG. 3, the wireless communication device B (20) has the same configuration as the wireless communication device A (10) shown in FIG. 2, and includes a transmission unit 21 and a reception unit 22. Further, the transmission unit 21 includes a transmission processing unit 210 and a transmission power control unit 220, and the reception unit 22 includes a reception processing unit 230 and an information determination unit 240.

Each component of the wireless communication device B (20) has the same configuration as each part of the wireless communication device A (10), the own device is the wireless communication device B (20), and the other device is the wireless communication device A (10). Since the same operation as the above-described operation is performed, the description thereof will be omitted.
In the wireless communication device B (20), the error information for the other device is the error information for the device A, and the error information for the own device is the error information for the device B.

[Transmission power control table: Fig. 4]
Next, the transmission power control table provided in the transmission power control unit 120 of the device A and the transmission power control unit 220 of the device B will be described with reference to FIG. FIG. 4 is an explanatory diagram of the transmission power control table.
The contents of the information actually stored in the transmission power control table are usually different between the wireless communication device A (10) and the wireless communication device B (20), but they are common because the basic configurations are the same. The configuration of the above will be described with reference to FIG.

As shown in FIG. 4, the transmission power control table stores information on the assumed power characteristics (prerequisite power characteristic information) and the corresponding transmission power value or power control value for each carrier frequency.
As described above, the prerequisite power characteristic information is information on the non-linear distortion caused by the power amplifier and the distortion predicted based on the propagation path.

The transmission power value is a value of the transmission power determined so that the other device can appropriately receive the distortion, assuming that the distortion indicated by the prerequisite power characteristic information occurs. The transmission power value may be obtained and stored in advance experimentally or by simulation corresponding to the prerequisite power characteristic information for each carrier frequency, or calculated by a mathematical formula each time based on the prerequisite power characteristic information. You may.
The power control value is information indicating a control amount from a preset default transmission power value.

Then, as described above, when the carrier frequency is determined by the frequency hopping, the transmission power control unit 120 (220) reads out the corresponding prerequisite power characteristic information and the transmission power value, and the transmission processing unit 110 (210). With the transmission power based on the transmission power value, the prerequisite power characteristic information is transmitted to the other device together with the transmission data.

Further, when the transmission power control unit 120 (220) inputs the error information for its own device from the reception processing unit 130 (230), the transmission power control unit 120 (220) corrects and updates the prerequisite power characteristic information of the transmission power control table based on the input. Then, set the transmission power value corresponding to the updated prerequisite power characteristic information. The error information for the own device is the same information as the error information for the other device transmitted from the other device.
As a result, in this wireless communication device, it is possible to control the transmission power reflecting the actual power characteristics for each hopping frequency, and it is possible to improve the communication quality.

[Structure of transmission processing unit: FIG. 5]
Next, the configuration of the transmission processing unit of the wireless communication device will be described with reference to FIG. FIG. 5 is a block diagram showing the configuration of the transmission processing unit.
Since the transmission processing unit 110 of the wireless communication device A (10) and the transmission processing unit 210 of the wireless communication device B (20) have the same configuration, FIG. 5 will be described as a common configuration.
As shown in FIG. 5, the transmission processing unit 110 (210) transmits the transmission frame generation unit 31, the UW (Unique Word) addition unit 32, the modulation signal generation unit 33, the quadrature modulation unit 34, and the transmission. It includes a radio 35 and a transmitting antenna 36.

The UW addition unit 32 stores a predetermined unique word, and outputs the unique word to the transmission frame generation unit 31. The unique word is known information used for synchronization processing and the like on the receiving side.
The transmission frame generation unit 31 divides the transmission data into a predetermined data length, adds a unique word from the UW addition unit 32, error information for the other device, and prerequisite power characteristic information to the beginning of the transmission frame, and transmits the transmission frame. Generate frames (frame 1, frame 2, ...).

As described above, the error information for the mating device is the error information of the power characteristic fed back to the mating device, and is generated by the information determination unit 140 (240).
Further, the prerequisite power characteristic information is output from the transmission power control unit 120 (220).

The modulation signal generation unit 33 performs modulation processing such as QAM (Quadrature Amplitude Modulation) mapping on the input transmission frame, and transmits a transmission baseband signal having an in-phase component (I-phase component) and an orthogonal component (Q-phase component). Output as.

The quadrature modulation unit 34 multiplies the transmission baseband signal by the local frequency, adds each signal component to perform quadrature modulation, and outputs the signal as a transmission IF (Intermediate Frequency) signal.
The transmission radio 35 uses a frequency synthesizer that generates a radio modulation frequency (carrier frequency) to perform frequency conversion from a transmission IF signal to a transmission RF signal.

Further, the frequency synthesizer of the transmitting radio 35 periodically performs frequency hopping to sequentially switch the carrier frequency, and the transmitting radio 35 performs frequency conversion using the switched and output carrier frequency and transmits. Generates an RF signal.
The transmission antenna 36 performs wireless transmission by emitting a transmission RF signal from the transmission radio 35 into the wireless space.

[Operation of transmission processing unit: FIG. 5]
Next, the operation of the transmission processing unit 110 (220) of the wireless communication device will be described with reference to FIG.
In the transmission frame generation unit 31, transmission data, unique words from the UW addition unit 32, feedback error information from the information determination unit 140 (240), and prerequisite power characteristic information from the transmission power control unit 120 (220). When is input, a transmission frame having a predetermined data length including a unique word, feedback error information, and prerequisite power characteristic information is generated at the beginning.
Here, the prerequisite power characteristic information is the power characteristic corresponding to the carrier frequency switched by frequency hopping.

The transmission frame is modulated by the modulation signal generation unit 33 and converted into a transmission baseband signal, and the transmission baseband signal is orthogonally modulated by the orthogonal modulation unit 34 and output to the transmission radio 35 as a transmission IF signal. Will be done.

The transmission IF signal is converted into a transmission RF signal by the transmission radio 35, and is output to space via the antenna 36 with the transmission power instructed by the transmission power control unit 120 (220).
The carrier frequency of the transmission radio 35 is switched by frequency hopping, and the transmission power control unit 120 (220) sets the transmission power corresponding to the prerequisite power characteristic information of the switched carrier frequency to the transmission radio 35.

Further, when the error information for the own device fed back from the other device is received, the transmission power control unit 120 (220) adjusts the transmission power based on the information, and the transmission power is set in the transmission radio unit 35. Will be done.
In this way, the processing in the transmission processing unit 110 (210) is performed.

[Structure of reception processing unit: FIG. 6]
Next, the configuration of the reception processing unit of the wireless communication device will be described with reference to FIG. FIG. 6 is a block diagram showing the configuration of the reception processing unit.
Since the reception processing unit 130 of the wireless communication device A (10) and the reception processing unit 230 of the wireless communication device B (20) have the same configuration, FIG. 6 will be described as a common configuration.
As shown in FIG. 6, the reception processing unit 130 (230) includes a reception antenna 41, a reception radio 42, an orthogonal detection unit 43, a synchronization processing unit 44, an equalization processing unit 45, and a demodulation data generation unit. It is equipped with 46.

The receiving antenna 41 receives an RF signal having a predetermined frequency.
The receiving radio 42 is provided with the same frequency synthesizer as that used in the transmission processing unit of the other device, and the synthesizer is used to reproduce the frequency hopping pattern at the time of transmission to reproduce the frequency to the received IF signal. Perform the conversion.
The receiving radio 42 switches the modulation frequency in synchronization with the timing of switching the carrier frequency of the transmission processing unit of the other device, and can convert to a received IF signal using an appropriate frequency.

The orthogonal detection unit 43 multiplies the received IF signal by the local frequency to perform orthogonal detection, and outputs the result as a reception baseband signal having an I-phase component and a Q-phase component.
The synchronization processing unit 44 performs a complex correlation calculation between the UW included in the reception baseband signal and the UW of the receiving device in advance, detects the synchronization point of the reception baseband signal, and uses the received frame obtained as a result, etc. It is output to the conversion processing unit 45 and the information determination unit 140 (240).

The equalization processing unit 45 compensates for the distortion received in the transmission line by the waveform equalization processing of the reception frame, and outputs the distortion to the demodulation data generation unit 46.
The demodulation data generation unit 46 performs data demodulation processing such as QAM demapping processing on the output of the equalization processing unit 45, and outputs the received data obtained as a result to the outside.

Further, the demodulation data generation unit 46 extracts the error information for the own device fed back from the other device and the prerequisite power characteristic information transmitted from the other device by the demodulation process, and transmits the error information for the own device to the transmission power. It is output to the control unit 120 (220), and the prerequisite power characteristic information is output to the information determination unit 140 (240).

[Operation of reception processing unit: Fig. 6]
Next, the operation of the reception processing unit 130 (230) of the wireless communication device will be described with reference to FIG.
The radio signal received by the receiving antenna 41 is converted into a received IF signal by the receiving radio 42, orthogonally detected by the orthogonal detection unit 43, and converted into I-phase and Q-phase reception baseband signals.
The reception baseband signal is subjected to synchronization detection processing by the synchronization processing unit 44, and reception frames are extracted.

Distortion of the received frame is detected as an actual power characteristic by the information determination unit 140 (240).
Further, the received frame is compensated for distortion by the equalization processing unit 45, demodulated by the demodulation data generation unit 46, and the received data is output. The demodulated prerequisite power characteristic information is output to the information determination unit 140 (240), and the demodulated error information for the own device is output to the transmission power control unit 120 (220).

Then, as described above, the information determination unit 140 (240) compares the detected power characteristic (distortion) with the received premise power characteristic information to obtain an error, and uses the error as the error information for the partner device. Is output to the transmission processing unit in order to transmit to the other device.

Further, the transmission power control unit 120 (220) updates the prerequisite power characteristics and the appropriate power characteristics of the transmission power control table based on the error information for the own device that demolishes the error information for the other device fed back from the other device. The transmission power is determined, the transmission power control table is updated, and the transmission power is set in the transmission radio 35 of the transmission processing unit 110 (210).
In this way, the operation in the reception processing unit 130 (230) is performed.

[Operation of this system: Figures 1 to 6]
Next, the operation of the transmission power control in this system will be described with reference to FIGS. 1 to 6.
Here, the wireless communication device A (10) (device A) shown in FIGS. 1 and 2 transmits to the wireless communication device B (20) (device B) shown in FIGS. 1 and 3, and the information is fed back. An example of performing transmission power control based on the above will be described.

First, in the device A, the transmission power control unit 120 refers to the transmission power control table, outputs the prerequisite power characteristic information corresponding to the carrier frequency to the transmission frame generation unit 31 of the transmission processing unit 110, and outputs the prerequisite power to the transmission frame generation unit 31. The transmission power based on the characteristic information is set in the transmission radio 35 of the transmission processing unit 110.
The transmission processing unit 110 adds a unique word and prerequisite power characteristic information to the transmission data, and transmits the transmission data with the transmission power set by the transmission radio 35.

When the device B receives the signal from the device A, performs orthogonal detection and synchronous detection to take out the received frame, the information determination unit 240 detects distortion (power characteristic) based on the received frame.
Further, the equalization processing unit 45 performs distortion compensation on the received frame, and the demodulation data generation unit 46 extracts the received data.
The prerequisite power characteristic information included in the received data is output to the information determination unit 240.

Then, the information determination unit 240 of the device B compares the received prerequisite power characteristic information with the actually detected power characteristic, and uses the difference as the error information for the mating device (error information for the device A) as the transmission processing unit. Output to 210.
The transmission processing unit 210 of the device B adds the error information for the device A to the transmission data together with the UW and its own prerequisite power characteristic information and transmits the data. As a result, the error information for the device A is fed back to the device A.

When the device A receives the signal from the device B, the received signal is demolished to obtain the received data, and the fed-back error information for the device A is acquired as the error information for the own device.
Then, the transmission power control unit 120 updates the prerequisite power characteristic information in the transmission power control table and the corresponding transmission power value, and sets the updated transmission power in the transmission radio 35 of the transmission processing unit 110.
In this way, the transmission power in this system is controlled.

The same process is performed when the device B transmits, and when the device A and the device B repeat the transmission / reception, the prerequisite power characteristic information and the error for the other device are included in the transmission frame from any device. Information and will be included.
Further, in any of the devices, the information determination unit 140 (240) calculates the error information for the other device based on the prerequisite power characteristic information in the received signal and the detected power characteristic, and the transmission power control unit 120 (220). ) Recognizes the error information for the other device in the received signal as the error information for the own device, and adjusts the transmission power of the own device.

[Effect of Embodiment]
According to the wireless communication device according to the embodiment of the present invention, it is a wireless communication device using the frequency hopping method, and the transmission processing unit 110 is premised on the calculation of the transmission power corresponding to the carrier frequency. The information is included in the transmission frame and transmitted to the other device with the transmission power set by the transmission power control unit 110, and the transmission power control unit 120 determines the prerequisite power based on the error information for the own device fed back from the other device. Since the characteristic information is updated and the transmission power is adjusted and set in the transmission processing unit 110, information on the difference between the assumed power characteristic that was the basis of the transmission power and the actual power characteristic is received from the other device. By doing so, the prerequisite power characteristic information can be updated based on the power characteristics actually measured on the receiving side, the transmission power can be finely adjusted, and the communication quality can be improved.

Further, according to this wireless communication device, the reception processing unit 130 takes out the received frame from the received signal and demotes it, and the information determination unit 140 measures the power characteristic of the received signal, and measures the demoded prerequisite power characteristic information. The error is determined by comparing with the actual power characteristics, and the error information for the other device is generated and fed back from the transmission processing unit 110 to the other device, and is included in the reception frame fed back from the other device. Since the prerequisite power characteristic information is updated to adjust the transmission power based on the error information for the own device, it is possible to finely adjust the transmission power for both the other device and the own device to improve the communication quality. There is an effect that can be done.

Further, according to the wireless communication system and the transmission power control method according to the embodiment of the present invention, in the wireless communication system using the frequency hopping method, the transmission power control unit 120 corresponds to the carrier frequency in the device A. Then, the prerequisite power characteristic information that is the premise of the transmission power calculation is output to the transmission processing unit 110, and the transmission power based on the prerequisite power characteristic information is set in the transmission power processing unit 110. The transmission power set including the power characteristic information is transmitted to the device B, and in the device B, the information determination unit 240 measures the power characteristics of the received signal, and the prerequisite power characteristic information transmitted from the device A on the transmitting side is used. The error is determined by comparing with the actual power characteristics, error information for the other device (error information for device A) is generated, fed back from the transmission processing unit 210 to device A, and in device A, the transmission power control unit. The 120 adjusts the transmission power in the transmission unit 110 based on the feedback error information for the other device (error information for the device A), and transmits based on the power characteristics actually measured on the receiving side. The power can be finely adjusted, which has the effect of improving communication quality.

[Another Embodiment]
Next, a wireless communication device (another wireless communication device) according to another embodiment of the present invention will be described.
The basic configuration of another wireless communication device is the same as that of the present wireless communication device shown in FIGS. 2 and 3, but the configurations of the transmission processing unit and the reception processing unit are different.

Then, in another wireless communication device, in addition to finely controlling the transmission power, the same data slot is included in a plurality of transmission frames on the transmitting side and transmitted, and the same data slot included in different receiving frames is included on the receiving side. For data slots, compare the quality of data symbols and select good quality data symbols to prevent burst data errors due to carrier frequency switching in the frequency hopping method and improve the quality of wireless communication. I am trying to improve it further.
In particular, another wireless communication device supports communication of transmission data in which one frame is composed of two data slots.

[Configuration of transmitter of another wireless communication device: FIG. 7]
The configuration of the transmission unit of another wireless communication device will be described with reference to FIG. 7. FIG. 7 is a block diagram of a transmission unit of another wireless communication device.
As shown in FIG. 7, the transmission unit of another wireless communication device includes a transmission data slot generation unit 301, a UW memory 302, a transmission data slot storage memory 303, a transmission frame generation unit 304, and a modulation signal generation unit 305. The quadrature modulation unit 306, the transmission radio 307, the transmission antenna 308, and the transmission power control unit 309 are provided.

Among the above components, the transmission data slot generation unit 301, the transmission data storage memory 303, and the transmission frame generation unit 304 are characteristic parts of another wireless communication device. Further, the portion excluding the transmission power control unit 309 constitutes the transmission power processing unit.
Since the components other than the transmission data slot generation unit 301, the transmission data storage memory 303, and the transmission frame generation unit 304 have the same configuration and operation as each part of the wireless communication device described above, detailed description thereof will be omitted. ..

The transmission data slot generation unit 301 creates a transmission data slot by dividing the input transmission data into a fixed data length shorter than the frame data length to generate a transmission data slot, and stores the transmission data slot in the transmission data slot storage memory 303.
At that time, the transmission data slot generation unit 301 of another wireless communication device adds the prerequisite power characteristic information from the transmission power control unit 309 and the error information for the other device from the information determination unit, which will be described later, to each transmission data slot. And store it in the transmission data slot storage memory 303.

The UW memory 302 outputs the UW to the transmission data slot storage memory 303.
The transmission frame generation unit 304 generates a transmission frame by allocating two transmission data slots having different contents to the frame by using the transmission data slot output from the transmission data slot storage memory 303. The method of generating the transmission frame will be described later.

That is, in another wireless communication device, two transmission data slots to which UW, prerequisite power characteristic information, and error information for the other device are added are assigned to one frame to generate a transmission frame, and wireless modulation is performed according to the carrier frequency. , Quadrature modulation is performed, and transmission is performed with the transmission power specified by the transmission power control unit 309.

Further, the transmission power control unit 309 is provided with a transmission power control table, similarly to the transmission power control unit 120 (240) of the wireless communication device described above, and inputs the prerequisite power characteristics to the transmission processing unit at the time of transmission to respond. The transmission power is transmitted to the other device, and at the time of reception, the transmission power control table is updated based on the received error information for the own device to adjust the transmission power.

[Configuration of receiver of another wireless communication device: FIG. 8]
Next, the configuration of the receiving unit of another wireless communication device will be described with reference to FIG. FIG. 8 is a block diagram of a receiving unit of another wireless communication device.
As shown in FIG. 8, the receiving unit of another wireless communication device includes a receiving antenna 329, a receiving radio 330, an orthogonal detection unit 331, a synchronization processing unit 332, a receiving data slot extraction unit 333, and a first unit. Data slot equalization processing unit 334, first data slot storage memory 335, second data slot equalization processing unit 336, second data slot storage memory 337, data symbol equalization error comparison unit 338, and received data. It includes a symbol selection unit 339, a demodulation data generation unit 340, and an information determination unit 341.

Among the above components, the receiving antenna 329, the receiving radio 330, the synchronization processing unit 332, the demodulation data generation unit 340, and the information determination unit 341 have the same configuration and operation as each component of the above-mentioned wireless communication device. Therefore, detailed description will be omitted.

The reception data slot extraction unit 333 extracts the reception data slot from the reception frame output from the synchronization processing unit 332. At that time, the reception data slot extraction unit 333 recognizes the number of the extracted reception data slot in the reception frame (first or second), and equalizes the data slot corresponding to the number. Output to the processing unit.

That is, the reception data slot extraction unit 333 outputs the first data slot, which is the first data slot in the reception frame, to the first data slot equalization processing unit 334, and the second data slot, which is the second data slot in the reception frame. The slot is output to the second data slot equalization processing unit 336.

The first data slot equalization processing unit 334 performs waveform equalization of the first data slot, calculates the equalization error of the data symbols constituting each first data slot, and obtains the equalization processing result and the equalization error. Output to the first data slot storage memory 335.

Similarly, the second data slot equalization processing unit 336 performs waveform equalization of the second data slot, calculates the equalization error of the data symbols constituting each second data slot, and performs the equalization processing result and the like. The conversion error is output to the second data slot storage memory 337.
As the equalizer used for the first data slot equalization processing unit 334 and the second data slot equalization processing unit 336, any equalizer such as a judgment feedback type equalizer or a Viterbi equalizer may be used. Good.

The first data slot storage memory 335 stores the equalization processing result of the first data slot and the equalization error of the data symbols constituting the data slot. Similarly, the second data slot storage memory 337 also stores the equalization processing result of the second data slot and the equalization error of the data symbols constituting the data slot.
The first data slot storage memory 335 and the second data slot storage memory 337 are configured to store the equalization processing result and the equalization error for a plurality of slots in chronological order, respectively.

The equalization error comparison unit 338 compares the magnitude of the equalization error for each data symbol with respect to the data slots having the same contents stored in the first data slot storage memory 335 and the second data slot storage memory 337, and compares the comparison results. Output to the received data selection unit 339.

The received data selection unit 339 selects a data symbol having a small equalization error from the equalization processing results of the same data slot based on the equalization error comparison result output from the equalization error comparison unit 338, and the data symbol It is read from the data slot storage memory in which the data is stored and output to the data demodulation unit 340.
Usually, the equalization error power of the missing data symbol is larger than that of the missing data symbol. Another wireless communication device takes advantage of this to select a highly reliable data symbol.

The information determination unit 341 of another wireless communication device calculates the power characteristic (distortion) based on the received frame from the synchronization processing unit 332 and is the demodulation data generation unit, similarly to the information determination unit of the present wireless communication device described above. The error information for the mating device is generated by comparing with the prerequisite power characteristic information output from 340.
Then, the error information for the other device is output to the transmission processing unit and transmitted to the other device.

[Transmission frame configuration: Fig. 9]
Next, the configuration of the transmission frame in another wireless communication device will be described with reference to FIG. 9A and 9B are explanatory views showing a transmission frame in another wireless communication device, where FIG. 9A shows a transmission data slot and FIG. 9B shows a transmission frame and a transmission timing.
Here, a case where two transmission data slots are included in one transmission frame will be described.

As shown in FIGS. 9A and 9B, the transmission frame generation unit 304 is a data slot (slot data, S1, S2,) generated by the transmission data slot generation unit 301 and stored in the transmission data slot storage memory 303. Of S3 ...), The first data slot S1 is assigned to the second transmission data slot in the latter half of the transmission frame F1 at the transmission frame timing T.

The transmission frame generation unit 304 sequentially performs the second transmission data of each transmission frame (F2, F3, ...) At each transmission frame timing (T + 1, T + 2, ...) From the second data slot S2 onward. Assign to a slot.

Further, the data slot S1 is reassigned to the first transmission data slot of the transmission frame at the transmission timing at which a certain delay time has elapsed from the transmission timing T. Here, the number of delay frames is set to 3, and the data slot S1 is reassigned to the transmission frame F4 at the transmission timing T + 3.

Here, it is necessary to set the number of delay frames when reallocating the same data slot, that is, the transmission timing, so as to be different from the interval of switching the carrier frequency.
That is, each data slot is assigned to and transmitted in two frames having an interval different from the interval of carrier frequency switching of frequency hopping.

Further, in another wireless communication device, the same data slot is assigned to the first transmission data slot and the other to the second transmission data slot in different frames, so that the equalization error between the two is obtained on the receiving side. Are stored in different memories so that they can be compared.

[Selection of received data symbol: Fig. 10]
Next, a method of selecting a received data symbol in the received data symbol selection unit 339 of another wireless communication device will be described with reference to FIG. FIG. 10 is an explanatory diagram of a method of selecting a received data symbol of another wireless communication device.
In FIG. 10, the thick line on the waveform of the received RF signal indicates a non-signal section generated by the received RF signal due to frequency hopping of the device on the transmitting side, and indicates that the carrier frequency has been switched in this section. ing. Further, the shaded portion in the reception frame, the reception data symbol, and the reception data slot indicates that the slot data or symbol data is transmitted first among the two transmissions for the same data slot.

As shown in FIG. 10, a non-signal section is generated in the received RF signal due to the switching of the carrier frequency, and the data symbols Dn-1 and the data symbols Dn-1 constituting the second reception data slot S2 included in the second reception frame F2 overlapping the non-signal section. Data symbols D1 to Dn-1 constituting the first reception data slot S1 included in Dn and the fourth reception frame F4 are missing.
Here, the data symbols that are missing due to overlapping the non-signal section are marked with a cross.

On the other hand, in another data slot having the same contents as the data slot including these missing data but having different reception timings, the received data symbol is not missing. For example, the reception data symbols D1 to Dn-1 constituting the second reception data slot S1 of the first reception frame F1 are not missing.

This is because the device on the transmitting side allocates the same data slot to two transmission frames given an interval of transmission timing different from the interval of switching the carrier frequency.
Also, the same data slots are arranged in different order in each transmission frame, that is, one is arranged in the first transmission data slot of one transmission frame and the other is in the second transmission data slot of another transmission frame. Since they are arranged, in the device on the receiving side, the equalization processing result of one data slot is stored in the first data slot storage memory 335, and the equalization processing result of the other data slot is stored in the second data slot. It will be stored in the memory 337.

Usually, the equalization error power of the missing data symbol is larger than that of the missing data symbol. Therefore, the reception data selection unit 339 compares the equalization error power of the first slot data storage memory 335 with the equalization error power of the second slot data storage memory 337 for the same slot data, and compares the equalization error power. Select the received data symbol with the smaller power.
Thereby, in another wireless communication device, for example, a highly reliable reception data symbol that is not missing from the first reception frame F1 and the fourth reception frame F4 can be selected, and the reception data slot S1 can be reconfigured. Can be done.

Further, in addition to switching the carrier frequency, the state of the radio propagation path may be deteriorated due to fading or the like generated during wireless communication, and the reception state of the received data symbol may be deteriorated.
In FIG. 10, the reception data symbols Dn constituting the second reception data slot S1 of the first reception frame F1 and the reception data symbols D1 and D2 constituting the first reception data slot S2 of the fifth reception frame F5 are frequency hopping. Although it does not overlap with the non-signal section due to, it is deteriorated or missing due to the deterioration of the reception condition.
In FIG. 10, data symbols deteriorated due to deterioration of the reception state are shaded.

Even in such a case, another wireless communication device can reconfigure the received data slot by referring to the same data slot contained in another receiving frame and selecting a received data symbol that has not deteriorated. You can improve your sex.

In the example of FIG. 10, the reception data symbol selection unit 339 uses the reception data symbols D1, D2 and Dn-1 as the reception data symbols constituting the data slot S1 from the first reception frame F1 and the reception data symbol Dn as the fourth reception data symbol. Select from the reception frame F4 to reconfigure the reception data slot S1.

Here, although it is configured to include two different transmission data slots per frame, it may be configured to include three or more different transmission data slots in one frame.
In this case, another wireless communication device requires as many data slot equalization processing units and corresponding data slot storage memories as the number of received data slots, and the data symbol equalization error comparison unit 338 requires each data slot storage memory. It is necessary to compare the equalization errors of the data symbols at the same positions that constitute the same data slot stored in.
Further, the received data symbol selection unit 339 needs to select and read the received data symbol having the minimum equalization error power based on the comparison result from the data symbol equalization error comparison unit.

Further, in another wireless communication device, the equalization error power is used as a criterion for selecting the received data symbol, but instead of the equalization error power, for example, an error determination such as CRC (Cyclic Redundancy Check) or Viterbi is performed. The error detection result by the processing may be used. That is, the quality of the received data symbol is calculated, and the received data symbol having good quality is selected.

Specifically, the transmitting side adds an error detection code to the transmitted data symbol, and the receiving side compares the error detection results calculated for the same received data symbol included in different receiving frames, and receives with less error. Data symbols may be selected.

[Effect of another embodiment]
According to the wireless communication device and the wireless communication system according to another embodiment of the present invention, the transmission is performed based on the power characteristics actually measured on the receiving side, similarly to the wireless communication device and the wireless communication system described above. The power can be finely adjusted, the communication quality can be improved, and the transmitting side generates wireless data so that the same data slot is included in multiple frames and transmits it by the frequency hopping method, and the receiving side. Then, the data slot composed of data symbols is extracted from the received received frame, the quality of each data symbol is calculated, and the quality of the data symbol at the same position in the same data slot included in different received frames is compared. By selecting the data symbol with the best quality and reconstructing and demodulating the data slot, burst data errors due to switching of carrier frequencies in the frequency hopping method are prevented, and the quality of wireless communication is further improved. There is an effect that can be made to.

The present invention is a wireless communication device, a wireless communication system, and a transmission power control method capable of controlling transmission power for each carrier wave and improving communication quality by reflecting distortion caused by an actual amplifier or transmission line. Suitable for.

10,20 ... Wireless communication device, 11,21 ... Transmitter, 12,22 ... Receiver, 31,304 ... Transmission frame generator, 32 ... UW addition, 33,305 ... Modulation signal generator,
34,306 ... Orthogonal modulator, 35,307 ... Transmitting radio, 36,308 ... Transmitting antenna, 41,329 ... Receiving antenna, 42,330 ... Receiving radio, 43,331 ... Orthogonal detector, 44,332 ... Synchronous processing unit, 45 ... Equalization processing unit, 46,340 ... Demodulation data generation unit, 110, 210 ... Transmission processing unit, 120, 220, 309 ... Transmission power control unit, 130, 230 ... Reception processing unit, 140, 240 ... Information determination unit, 301 ... Transmission data slot generation unit, 302 ... UW memory, 303 ... Transmission data slot storage memory, 333 ... Received data slot extraction unit, 334 ... First data slot equalization processing unit,
335 ... 1st slot data storage memory, 336 ... 2nd data slot equalization processing unit,
337 ... 2nd slot data storage memory, 338 ... Data symbol equalization error comparison unit,
339 ... Received data symbol selection unit

The present invention for solving the problems of the above-mentioned conventional example is a wireless communication device that communicates by using a frequency hopping method, generates a transmission frame from transmission data, and uses the set transmission power to generate the transmission frame. The transmission processing unit that wirelessly transmits to the other device and the prerequisite power characteristic information of the own device that is the premise of the transmission power are output to the transmission processing unit, and the transmission power based on the prerequisite power characteristic information of the own device is output to the transmission processing unit. The transmission power control unit to be set, the reception processing unit that extracts and demolishes the received frame from the received signal, and the power characteristics are measured from the received signal and measured as the prerequisite power characteristic information of the other device demodulated by the reception processing unit. It is equipped with an information determination unit that calculates the difference by comparing with the power characteristics and outputs the difference as error information for the other device to the transmission processing unit, and the transmission processing unit uses the prerequisite power characteristic information of the own device and the other device. The error information is included in the transmission frame and transmitted, and the transmission power control unit updates and updates the prerequisite power characteristic information of the own device based on the error information for the own device included in the reception frame received from the remote device. It is a wireless communication device that sets the transmission power based on the prerequisite power characteristic information of the own device in the transmission processing unit.

Further, the present invention is a wireless communication system in which a first wireless communication device and a second wireless communication device communicate using a frequency hopping method, and the first wireless communication device is premised on transmission power. The prerequisite power characteristic information of the first wireless communication device to be used is included in the transmission frame and transmitted to the second wireless communication device with the transmission power based on the prerequisite power characteristic of the first wireless communication device, and the second radio is transmitted. It is a device that updates the prerequisite power characteristic information of the first wireless communication device and adjusts the transmission power based on the error information for the first wireless communication device fed back from the communication device, and the second wireless communication device is , The reception signal from the first wireless communication device is demolished to extract the prerequisite power characteristic information of the first wireless communication device, and the power characteristic is measured from the received signal to demodulate the first wireless communication device. As a wireless communication system, which is a device that calculates a difference by comparing the prerequisite power characteristic information of the above and the measured power characteristic, and feeds the difference back to the first wireless communication device as error information for the first wireless communication device. There is.

Further, the present invention is a transmission power control method in a wireless communication system in which a first wireless communication device and a second wireless communication device communicate with each other by using a frequency hopping method. , The prerequisite power characteristic information of the first wireless communication device, which is the premise of calculating the transmission power, is included in the transmission frame and transmitted to the second wireless communication device with the transmission power based on the prerequisite power characteristic of the first wireless communication device. Then, the second wireless communication device demolishes the received signal from the first wireless communication device to extract the prerequisite power characteristic information of the first wireless communication device, and measures the power characteristic from the received signal. The difference is calculated by comparing the demodulated prerequisite power characteristic information of the first wireless communication device with the measured power characteristic, and the difference is fed back to the first wireless communication device as error information for the first wireless communication device. Then, the first wireless communication device updates the prerequisite power characteristic information of the first wireless communication device based on the error information for the first wireless communication device fed back from the second wireless communication device, and transmits power. It is a transmission power control method that adjusts.

According to the present invention, it is a wireless communication device that communicates by using a frequency hopping method, and is a transmission processing unit that generates a transmission frame from transmission data and wirelessly transmits the transmission frame to a remote device with a set transmission power. When outputs the premise power characteristic information of the own apparatus as a premise of the transmission power to the transmission processing unit, and a transmission power control unit that sets a transmission power based on the premise power characteristic information of its own apparatus to the transmission processing unit, receiving The difference between the reception processing unit that extracts the received frame from the signal and demotes it, and the power characteristics measured from the received signal, comparing the prerequisite power characteristic information of the other device demodulated by the reception processing unit with the measured power characteristics. Is provided with an information determination unit that calculates and outputs the difference as error information for the other device to the transmission processing unit, and the transmission processing unit includes the prerequisite power characteristic information of the own device and the error information for the other device in the transmission frame. The transmission power control unit updates the prerequisite power characteristic information of the own device based on the error information for the own device included in the reception frame received from the other device, and changes to the updated prerequisite power characteristic information of the own device. Since it is a wireless communication device that sets the transmission power based on it in the transmission processing unit, adjust the transmission power as needed according to the actual power characteristics that reflect the influence of the amplifier and transmission line, and set the appropriate transmission power. This has the effect of improving communication quality.

Further, according to the present invention, the first wireless communication device and the second wireless communication device are wireless communication systems in which communication is performed by using a frequency hopping method, and the first wireless communication device is a transmission power. including premises power characteristic information of the first serving as the premise of the wireless communication device to a transmission frame, and transmits at transmission power based on the premise power characteristics of the first wireless communication device to the second wireless communication device, the second A device that updates the prerequisite power characteristic information of the first wireless communication device and adjusts the transmission power based on the error information for the first wireless communication device fed back from the wireless communication device of the second wireless communication device. The device demolishes the received signal from the first wireless communication device to extract the prerequisite power characteristic information of the first wireless communication device, and measures the power characteristic from the received signal to demodulate the first radio. Wireless communication, which is a device that calculates a difference by comparing the prerequisite power characteristic information of the communication device with the measured power characteristic, and feeds the difference back to the first wireless communication device as error information for the first wireless communication device. Since it is a system, in the first wireless communication device, the transmission power is adjusted at any time according to the actual power characteristics that reflect the influence of the amplifier and the transmission line, etc., based on the information fed back from the second wireless communication device. Therefore, it is possible to set an appropriate transmission power, which has the effect of improving the communication quality.

Further, according to the present invention, the first wireless communication device and the second wireless communication device are a transmission power control method in a wireless communication system in which communication is performed by using a frequency hopping method, and the first wireless communication. The device includes the prerequisite power characteristic information of the first wireless communication device, which is the premise of calculating the transmission power, in the transmission frame, and uses the transmission power based on the prerequisite power characteristic of the first wireless communication device to obtain the second wireless communication device. The second wireless communication device demolishes the received signal from the first wireless communication device to extract the prerequisite power characteristic information of the first wireless communication device, and measures the power characteristic from the received signal. Then, the difference is calculated by comparing the demodulated prerequisite power characteristic information of the first wireless communication device with the measured power characteristic, and the difference is used as the error information for the first wireless communication device in the first wireless communication device. The first wireless communication device updates the prerequisite power characteristic information of the first wireless communication device based on the error information for the first wireless communication device fed back from the second wireless communication device. Since the transmission power control method is used to adjust the transmission power, the first wireless communication device has actual power characteristics that reflect the influence of the amplifier and the transmission line based on the information fed back from the second wireless communication device. The transmission power can be adjusted at any time according to the above, and an appropriate transmission power can be set, which has the effect of improving the communication quality.

Claims (10)

A wireless communication device that communicates using a frequency hopping method.
A transmission processing unit that generates a transmission frame from the transmission data and wirelessly transmits the transmission frame to the other device with the set transmission power.
It is provided with a transmission power control unit that outputs the prerequisite power characteristic information that is the premise of the transmission power to the transmission processing unit and sets the transmission power based on the prerequisite power characteristic information in the transmission processing unit.
The transmission processing unit includes the prerequisite power characteristic information in the transmission frame and transmits the information.
The transmission power control unit updates the prerequisite power characteristic information based on the error information for the own device included in the reception frame received from the remote device, and transmits the transmission power based on the updated prerequisite power characteristic information. A wireless communication device set in the processing unit. The wireless communication device according to claim 1, wherein the prerequisite power characteristic information corresponds to each carrier frequency whose frequency hopping method is switched. A reception processing unit that extracts received frames from received signals and demodulates them,
The power characteristics are measured from the received signal, the premise power characteristic information demodulated by the reception processing unit is compared with the measured power characteristics to calculate the difference, and the difference is transmitted as error information for the partner device. Equipped with an information judgment unit that outputs to the unit
The wireless communication device according to claim 1, wherein the transmission processing unit includes the error information for the other device in a transmission frame and transmits the information. A reception processing unit that extracts received frames from received signals and demodulates them,
The power characteristics are measured from the received signal, the premise power characteristic information demodulated by the reception processing unit is compared with the measured power characteristics to calculate the difference, and the difference is transmitted as error information for the partner device. Equipped with an information judgment unit that outputs to the unit
The wireless communication device according to claim 2, wherein the transmission processing unit includes the error information for the other device in a transmission frame and transmits the information. The transmission processing unit divides the transmission data into a plurality of data slots and generates a transmission frame so that the data slots having the same contents are included in a plurality of different transmission frames.
The reception processing unit extracts a data slot composed of data symbols from a reception frame, performs waveform equalization processing of the data slot, calculates the quality of the data symbols constituting the data slot, and sets the data slots in different reception frames. The wireless communication device according to claim 3, wherein the quality of each data symbol is compared with respect to a plurality of the same data slots included, the data symbol having the best quality is selected, and the data slot is reconstructed and demolished. The transmission processing unit divides the transmission data into a plurality of data slots and generates a transmission frame so that the data slots having the same contents are included in a plurality of different transmission frames.
The reception processing unit extracts a data slot composed of data symbols from a reception frame, performs waveform equalization processing of the data slot, calculates the quality of the data symbols constituting the data slot, and sets the data slots in different reception frames. The wireless communication device according to claim 4, wherein the quality of each data symbol is compared with respect to a plurality of the same data slots included, the data symbol having the best quality is selected, and the data slot is reconstructed and demolished. The first wireless communication device and the second wireless communication device are wireless communication systems that communicate using a frequency hopping method.
The first wireless communication device includes the prerequisite power characteristic information that is the premise of the transmission power in the transmission frame, transmits the transmission power based on the prerequisite power characteristic to the second wireless communication device, and the second. It is a device that updates the prerequisite power characteristic information and adjusts the transmission power based on the error information for the first wireless communication device fed back from the wireless communication device of the above.
The second wireless communication device demolishes the received signal from the first wireless communication device to extract the prerequisite power characteristic information, and measures the power characteristic from the received signal to perform the demodulated premise. A wireless communication system that calculates a difference by comparing the power characteristic information with the measured power characteristic and feeds the difference back to the first wireless communication device as error information for the first wireless communication device. .. The first wireless communication device is a device that divides transmission data into a plurality of data slots and generates transmission frames so that data slots having the same contents are included in a plurality of different transmission frames.
When the second wireless communication device demolishes the received signal, it extracts a data slot composed of data symbols from the received frame, performs waveform equalization processing of the data slot, and data constituting the data slot. Calculate the quality of the symbol, compare the quality of each data symbol for multiple identical data slots contained in different receive frames, select the data symbol with the best quality, reconfigure and demote the data slot. The wireless communication system according to claim 7, which is a device for performing data. A transmission power control method in a wireless communication system in which a first wireless communication device and a second wireless communication device communicate using a frequency hopping method.
The first wireless communication device includes the prerequisite power characteristic information that is a prerequisite for calculating the transmission power in the transmission frame, and transmits the transmission power based on the prerequisite power characteristic to the second wireless communication device.
The second wireless communication device demodulates the received signal from the first wireless communication device to extract the prerequisite power characteristic information, and measures the power characteristic from the received signal to demodulate the demodulated premise. The difference is calculated by comparing the power characteristic information with the calculated power characteristic, and the difference is fed back to the first wireless communication device as the error information for the first wireless communication device.
Transmission power control in which the first wireless communication device updates the prerequisite power characteristic information and adjusts the transmission power based on the error information for the first wireless communication device fed back from the second wireless communication device. Method. The first wireless communication device divides the transmission data into a plurality of data slots and generates a transmission frame so that the data slots having the same contents are included in a plurality of different transmission frames.
When the second device demolishes the received signal, it extracts a data slot composed of data symbols from the received frame, performs waveform equalization processing of the data slot, and of the data symbols constituting the data slot. A request to calculate the quality, compare the quality of each data symbol for multiple identical data slots contained in different received frames, select the data symbol with the best quality, and reconstruct and demote the data slot. Item 9. The transmission power control method according to Item 9.

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