JP2017228911A - Radio communication system, radio equipment, radio communication method, and radio communication program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent, at the weakened proof stress to an interference wave from an adjacent channel in a radio band, the deterioration of radio transmission quality and the reduction of a transmission capacity if, as a measure, a modulation method is degraded in an identical radio band.SOLUTION: In an FDD point-to-point radio system, each of first radio equipment and second radio equipment includes means for individually setting a transmitter, a receiver, a modulator and a demodulator. The radio equipment further includes a function to detect an adjacent channel interference wave to determine a radio band which does not cause the deterioration of radio transmission quality, so as to change to a radio occupation band which does not cause the deteriorated radio transmission quality, to further set each modulation method according to the change of the radio occupation band. When the adjacent channel interference wave is not detected any more, setting is restored to an original setting from the setting to avoid the deteriorated radio transmission quality by the adjacent channel interference wave.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wireless communication system, a wireless device, a wireless communication method, and a wireless communication program, and more particularly to a wireless communication system, a wireless device, a wireless communication method, and a wireless communication that perform wireless communication in a fixed point-to-point manner in which a wireless device faces a wireless space. It relates to a communication program.

  Currently, in the field of wireless communication systems, various wireless communication systems are being actively studied, and various wireless communication systems are being put to practical use one after another within a limited wireless frequency band. As a result, any one of the wireless communication systems is often affected by interference waves from other wireless communication systems that use adjacent channels, so that the wireless transmission quality of the wireless communication system deteriorates frequently. It has become to.

  Patent Document 1 describes a wireless communication apparatus that determines a direction that is not easily affected by adjacent waves, performs directivity control of a reception antenna, and receives a radio signal while minimizing the influence of adjacent waves.

  Patent Document 2 uses a multi-carrier transmission scheme in which a part of subcarriers is used redundantly with another radio communication system, and a transmitting radio station and a receiving radio station perform signal transmission using a plurality of subcarriers. In a radio communication system, a receiving radio station subdivides a frequency band allocated to the receiving radio station into frequency bands for which the interference amount measurement is performed, and a received signal interference amount for each subdivided frequency bandwidth. And determining available subcarriers based on the amount of interference.

  In Patent Document 3, when the radio channel quality changes in the first radio communication device and the second radio communication device facing each other, the demodulator of the second radio communication device sends a channel quality signal to the demodulator control circuit. And the demodulator control circuit transmits a modulation method instruction signal to the modulator control circuit of the first wireless communication device so that the modulation method is changed according to the line quality signal, and the modulator control circuit The modulation method of the modulator is controlled by the instruction signal, and at the same time, the modulation method instruction signal is output to the modulator, multiplexed with transmission data and transmitted to the second wireless communication device, and the demodulator control of the second wireless communication device There is a description that the circuit controls the demodulator with the demodulator control signal.

  Japanese Patent Application Laid-Open No. 2004-228561 describes that in a multi-value application radio apparatus having a working / preliminary configuration, modulation schemes are adaptively switched according to operation modes of quality priority and capacity priority.

  In Patent Document 5, in the transmission device, the symbol speed of the transmission signal, that is, the frequency bandwidth is changed by changing the number m of points of the DFT circuit, and the position where the signal is input to the IFFT circuit is changed by the switch circuit. Therefore, there is a description that the transmission frequency is changed. In the receiving apparatus, the reception frequency is changed by changing the position where the signal is extracted from the FFT circuit by the switch circuit, and the point number m of the IDFT circuit is changed. Thus, there is a description of changing the symbol rate of the received signal, that is, the frequency bandwidth.

  Patent Document 6 discloses an interference related to a signal that receives a radio signal and switches the frequency of the radio signal received by the reception frequency switching unit among a plurality of set frequencies, and the interference state detection unit receives for each frequency. There is a description of switching the frequency used for wireless communication by the communication device based on the interference state.

  Patent Document 7 has a frequency setting circuit that sets the transmission frequency of the frequency control circuit using the output of the adjacent channel detection circuit and the output of the setting control circuit on the transmission side, and a narrow-band filter on the reception side. By having an adjacent channel detection circuit equipped with a detector for detecting the filter output, detecting an adjacent channel signal by the adjacent channel detection circuit, and setting a selection limit on the transmission frequency band in the frequency setting circuit based on the detection result There is a description that a transmission signal that does not cause interference between adjacent channels is output.

JP 2010-263472 A (page 4-6) JP 2005-167502 A JP 2005-223835 A JP 2009-171263 A JP 2009-105722 A JP 2003-273799 A Japanese Patent Laid-Open No. 11-112378

  The present invention does not require a new frequency application or replacement with a new device even when the transmission quality is steadily deteriorated due to the adjacent channel interference wave generated after laying, only by changing the setting of the device, The object is to improve and restore wireless transmission quality that is not affected by adjacent channel interference with the original transmission capacity.

In addition, according to the present invention, in the FDD point-to-point wireless system, since it can be set independently on the uplink and downlink, it is possible to independently prevent deterioration of radio transmission quality due to adjacent channel interference waves on the uplink and downlink. The purpose is to do.

A wireless communication system according to the present invention is a wireless communication system that performs point-to-point wireless communication between two opposing first wireless devices and a second wireless device,
Each of the first wireless device and the second wireless device is
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A radio reception system having a receiver capable of setting an operating frequency, which is a center frequency of a radio frequency band, and a demodulator capable of setting a modulation scheme and a radio occupied band;
Channel quality monitoring means for detecting whether or not the radio transmission quality of the received signal of the own radio channel has deteriorated;
An adjacent interference wave detecting means for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio device;
Radio frequency changing means for individually changing the operating frequencies of the transmitter and the receiver to radio frequencies that are not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
Occupied band changing means for individually changing the radio occupied bands of the modulator and the demodulator to radio occupied bands that are not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves When,
Modulation method changing means for individually changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the modulator and the demodulator,
When it is determined that the radio transmission quality of the received signal has deteriorated due to the adjacent channel interference wave, the radio frequency changing means, the occupied band changing means, the modulation method changing means causes the operating frequency of the receiver, the demodulator The radio occupied bandwidth of the demodulator, the modulation method of the demodulator is changed, or the radio transmission quality deterioration notification of the received signal due to the adjacent channel interference wave is received from the first or second radio device on the other side facing the radio In this case, the radio frequency changing means, the occupied band changing means, the control means for changing the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation method of the modulator by the modulation method changing means,
It is a radio | wireless communications system characterized by having.

The wireless communication method according to the present invention performs point-to-point wireless communication between two opposing first wireless devices and second wireless devices,
Each of the first wireless device and the second wireless device is
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A wireless communication method of a wireless communication system, comprising: a receiver that can set an operating frequency that is a center frequency of a radio frequency band; and a wireless reception system that includes a demodulator that can set a modulation scheme and a radio occupied band
In the first wireless device,
A detecting step for detecting whether or not the wireless transmission quality of the received signal of the wireless line has deteriorated;
An adjacent interference wave detecting step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A first modulation scheme change step of changing the modulation scheme of the demodulator so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When it is detected whether the cause of the deterioration of the transmission quality of the received signal is due to the adjacent channel interference wave to the radio frequency band occupied as the radio frequency used by the own radio device, the second radio device, Transmitting a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave, and
In the second wireless device,
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When the deterioration notification is received from the first radio apparatus, the second radio frequency changing step, the second occupied band changing step, and the second modulation scheme changing means are used to operate the transmitter. A second control step for controlling to change a radio occupied band of the modulator and a modulation scheme of the modulator;
A wireless communication method.

A wireless device according to the present invention is a wireless device of a wireless communication system that performs point-to-point wireless communication between two opposing wireless devices,
The wireless device includes a transmitter that can set an operating frequency that is a center frequency of a radio frequency band, and a radio transmission system that includes a modulator that can set a modulation scheme and a radio occupied band,
A radio reception system having a receiver capable of setting an operating frequency, which is a center frequency of a radio frequency band, and a demodulator capable of setting a modulation scheme and a radio occupied band;
Channel quality monitoring means for detecting whether or not the radio transmission quality of the received signal of the own radio channel has deteriorated;
An adjacent interference wave detecting means for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio device;
Radio frequency changing means for individually changing the operating frequencies of the transmitter and the receiver to radio frequencies that are not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
Occupied band changing means for individually changing the radio occupied bands of the modulator and the demodulator to radio occupied bands that are not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves When,
Modulation method changing means for individually changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the modulator and the demodulator,
When it is determined that the radio transmission quality of the received signal has deteriorated due to the adjacent channel interference wave, the radio frequency changing means, the occupied band changing means, the modulation method changing means causes the operating frequency of the receiver, the demodulator The radio frequency, the modulation method of the demodulator is changed, or the radio frequency of the received signal due to the adjacent channel interference wave is received from the radio device on the opposite side of the radio. Changing means, the occupied band changing means, the modulation means changing means for changing the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation means of the modulator;
Is a wireless device.

The wireless communication method according to the present invention performs point-to-point wireless communication with a wireless device on the opposite side,
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A wireless communication method for a wireless device comprising: a receiver that can set an operating frequency that is a center frequency of a radio frequency band; and a radio reception system that includes a demodulator that can set a modulation scheme and a radio occupied band,
A detection step for detecting whether or not the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detecting step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A modulation method change step for changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the demodulator,
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When detecting whether the transmission quality of the received signal is deteriorated due to the adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio apparatus, the second radio apparatus Transmitting a notification of deterioration of radio transmission quality of the received signal due to the adjacent channel interference wave;
Or the first process to do
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When receiving a notification of deterioration of the wireless transmission quality of the received signal due to the adjacent channel interference wave from the first wireless device, the second wireless frequency changing step, the second occupied band changing step, the second A second control step for controlling to change the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator using the modulation scheme changing means of:
This is a wireless communication method for performing at least one of the second processes for performing the above.

The wireless communication program according to the present invention performs point-to-point wireless communication with a wireless device on the opposite side,
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A computer as a wireless device having a receiver that can set an operating frequency that is a center frequency of a radio frequency band and a radio receiving system that has a demodulator that can set a modulation scheme and a radio occupied band
A detection step for detecting whether or not the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detecting step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A modulation method change step for changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the demodulator,
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When detecting whether the transmission quality of the received signal is deteriorated due to the adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio apparatus, the second radio apparatus Transmitting a notification of deterioration of radio transmission quality of the received signal due to the adjacent channel interference wave;
Or the first process to do
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When receiving a notification of deterioration of the wireless transmission quality of the received signal due to the adjacent channel interference wave from the first wireless device, the second wireless frequency changing step, the second occupied band changing step, the second A second control step for controlling to change the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator using the modulation scheme changing means of:
A wireless communication program that executes at least one of the second processes.

According to the present invention, there is no need to change the installation of a radio line or replace it with a new radio communication system even when the quality of received signal is deteriorated due to an adjacent channel interference wave. By simply changing the setting, the deterioration of the received signal quality due to the adjacent channel interference wave can be avoided while maintaining the original transmission capacity, and the communication can be restored with the received signal quality being good.
In addition, according to the present invention, since the above operation is performed individually on the uplink and downlink radio channels, the received signal in the reverse direction is used in the system change of the channel in which the received signal quality deteriorates due to the interference wave of the adjacent channel in one direction. A line whose quality has not deteriorated is not disconnected.

It is an apparatus block diagram which shows an example of the apparatus structure of the radio | wireless communications system by this invention. FIG. 2 is a block configuration diagram illustrating an example of an internal configuration of an adjacent interference wave detection unit in a wireless device that configures the wireless communication system illustrated in FIG. 1. FIG. 2 is a block configuration diagram illustrating an example of an internal configuration of a radio signal control unit in a radio apparatus configuring the radio communication system illustrated in FIG. 1. 1 is a diagram for explaining an example of operations of a radio communication method and a radio communication program for determining that interference from an adjacent channel occurs in a radio signal control unit in a radio apparatus constituting the radio communication system shown in FIG. It is a flowchart. 3 is a flowchart for explaining an example of the operation of a wireless communication method and a wireless communication program for changing the setting of a line with deteriorated wireless transmission quality in a wireless signal control unit in a wireless device constituting the wireless communication system shown in FIG. is there. Operation of the wireless communication method and the wireless communication program when it is determined in the wireless signal control unit in the wireless device constituting the wireless communication system shown in FIG. 1 that the interference of the adjacent channel has decreased below a predetermined interference threshold. It is a flowchart for demonstrating an example. The flowchart for demonstrating an example of the operation | movement of the radio | wireless communication method and radio | wireless communication program which cancel the interference of an adjacent channel in the radio | wireless signal control part in the radio | wireless apparatus which comprises the radio | wireless communications system shown in FIG. It is a figure which shows the first half part. The flowchart for demonstrating an example of the operation | movement of the radio | wireless communication method and radio | wireless communication program which cancel the interference of an adjacent channel in the radio | wireless signal control part in the radio | wireless apparatus which comprises the radio | wireless communications system shown in FIG. It is a figure which shows the latter half part. It is explanatory drawing for demonstrating an example of operation | movement of the radio | wireless communications system shown in FIGS. 1-7B, a radio | wireless communication method, and a radio | wireless communication program.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[Description of configuration]
FIG. 1 is a configuration diagram showing a wireless communication system according to an embodiment of the present invention. FIG. 2 is a block diagram showing an example of the internal configuration of the adjacent interference wave detection unit in the radio apparatus constituting the radio communication system of FIG. FIG. 3 is a block diagram showing an example of the internal configuration of the radio signal control unit in the radio apparatus constituting the radio communication system of FIG. The radio communication system according to the present embodiment is a radio communication system that performs FDD point-to-point radio communication between two first radio apparatuses 10 and second radio apparatuses 20 that are opposed to each other in space.

With reference to FIG. 1, the structure of the radio | wireless apparatuses 10 and 20 which face radio | wireless is demonstrated.
The first radio apparatus 10 includes an interface unit 101, a transmitter 102, a receiver 103, a modulator 104, a demodulator 105, an adjacent interference wave detection unit 106, a radio signal control unit 107, a radio signal distributor 108, and an antenna unit 109. Composed. The radio device 20 includes an interface unit 201, a transmitter 202, a receiver 203, a modulator 204, a demodulator 205, an adjacent interference wave detection unit 206, a radio signal control unit 207, a radio signal distributor 208, and an antenna unit 209. Composed.

The first radio apparatus 10 and the second radio apparatus 20 are configured to be able to perform radio transmission by wirelessly opposing the antenna unit 109 and the antenna unit 209.
As shown in FIG. 2, the adjacent interference wave detection unit 106 includes an own radio line receiver 301, an own radio signal removal filter 302, and a reception level detector 303. The reception level detector 303 is a spectrum analyzer, for example. Also, the adjacent interference wave detection unit 206 has the same configuration as the adjacent interference wave detection unit 106.
As shown in FIG. 3, the radio signal control unit 107 includes a channel quality monitoring unit 401, a counter station synchronization determination unit 402, a determination unit 403, a setting unit 404, a signal control unit 405, a transmission frequency control unit 406, a reception frequency control. 407, transmission occupied band control unit 408, reception occupied band control unit 409, transmission modulation scheme control unit 410, and reception modulation scheme control unit 411. The radio signal control unit 207 has the same configuration as the radio signal control unit 107.

The first radio device 10 and the second radio device 20 divide the devices in order to individually set up and down operation configurations. The first radio apparatus 10 includes a radio transmission system including a transmitter 102 and a modulator 104, and a radio reception system including a receiver 103 and a demodulator 105. The second radio apparatus 20 includes a radio transmission system including a transmitter 202 and a modulator 204, and a radio reception system including a receiver 203 and a demodulator 205.
Radio signal distributors 108 and 208 receive radio reception signal a from antenna units 109 and 209, and distribute radio reception signal a to receiver 105 and adjacent interference wave detection unit 106, and to receiver 205 and adjacent interference wave detection unit 206. To do.
The receivers 103 and 203 receive the radio reception signal a, and send the reception signal b to the demodulators 105 and 205 and the radio reception signal reception level k to the radio signal control units 107 and 207.

Demodulators 105 and 205 receive reception signal b, send demodulation signal c to interface units 110 and 210, and send reception information j to radio signal control units 107 and 207.
The interface units 110 and 210 receive the demodulated signal c from the demodulators 105 and 205, send the reception data d to the outside, receive the transmission data e from the outside, and send the transmission data f to the modulators 104 and 204.
The modulators 104 and 204 receive the transmission data f and send a modulation signal g to the transmitters 102 and 202.
Transmitters 102 and 202 receive modulated signal g and send radio transmission signal h to antenna units 109 and 209.

The adjacent interference wave detection units 106 and 206 receive the radio reception signal a and send the interference wave reception level q to the radio signal control units 107 and 207.
Radio signal control units 107 and 207 receive reception information j, radio reception signal reception level k, and interference wave reception level q, and send frequency setting signal m to transmitter 102 and receiver 103, and transmitter 202 and receiver 103. Then, the occupied band setting signal n and the modulation scheme setting signal p are sent to the modulator 104 and the demodulator 105, and to the modulator 204 and the demodulator 205.

The configuration and operation of the adjacent interference wave detection units 106 and 206 will be described with reference to FIG. Although FIG. 2 shows the configuration and operation of the adjacent interference wave detection unit 106, the adjacent interference wave detection unit 206 has the same configuration as the adjacent interference wave detection unit 106 and performs the same operation.
Both the adjacent interference wave detection units 106 and 206 are configured by a local radio channel receiver 301, a local radio signal cancellation filter 302, and a reception level detector 303. The adjacent interference wave detection units 106 and 206 receive the radio reception signal a from the radio signal demultiplexers 108 and 208 and output an interference wave reception level q to the radio signal control units 107 and 207.
The own radio channel receiver 301 is a receiver that receives the radio channel band and the front and rear + α bands by a bandpass filter including the pass band of the own radio channel with respect to the radio received signal a. The received signal r including the wave is sent to the own radio signal removal filter 302. The own wireless channel band and the front and rear + α band are frequency bands for detecting interference waves.

The own radio signal removal filter 302 removes the own radio signal from the reception signal r including the adjacent channel wave, and sends the interference wave reception signal s to the reception level detector 303.
The reception level detector 303 receives the interference wave reception signal s, detects the interference wave reception level q for each frequency in the band of the own radio channel band + α, and sends it to the radio signal control units 107 and 207.

The configuration of the wireless signal control units 107 and 207 will be described with reference to FIG. 3 shows the configuration of the radio signal control unit 107, the radio signal control unit 207 has the same configuration as the adjacent interference wave detection unit.
The radio signal control units 107 and 207 are both a line quality monitoring unit 401, counter-station synchronization determination unit 402, determination unit 403, setting unit 404, signal control unit 405, transmission frequency control unit 406, reception frequency control unit 407, transmission An occupied band control unit 408, a reception occupied band control unit 409, a transmission modulation method control unit 410, and a reception modulation method control unit 411 are configured.
The demodulators 105 and 205 that demodulate the signal of the own radio line still have errors due to interference waves, but the setting information with the opposite radio apparatus is reliable setting information (such as majority decision by redundant transmission, error determination, etc.). Line quality information A and opposite station setting change request signal D) are extracted.

The channel quality monitoring unit 401 receives the channel quality signal A from the demodulators 105 and 205, and sends a channel degradation signal B, which is a degradation status of the received data b, to the determination unit 403.
Counter station synchronization determination section 402 receives counter station change request signal D from demodulators 105 and 205, and sends response signal E to determination section 403.
Judgment unit 403 receives channel degradation signal B from channel quality monitoring unit 401, radio reception signal reception level k from receivers 103 and 203, and interference wave reception level q from adjacent interference wave detection units 106 and 206, and setting unit 404 From the setting information F of the threshold value set in step S1, it is determined whether or not a line degradation state and a wireless band that does not deteriorate the line quality can be detected and a setting change can be performed. When the setting change is performed, a radio control signal G is sent to the signal control unit 405.

The setting unit 404 sends setting information F, which is a criterion for determining the deterioration status, to the determination unit 403.
The signal control unit 405 receives the radio control signal G, and transmits the frequency signal H to the transmission frequency control unit 406 and the reception frequency control unit 407, and transmits the occupied band signal M to the transmission occupied band control unit 408 and the reception occupied band control unit 409. The modulation method signal N is sent to the modulation method control unit 410 and the reception modulation method control unit 411.
The transmission frequency control unit 406 receives the frequency signal H, the frequency setting signal m is transmitted to the transmitters 102 and 202, and the reception frequency control unit 407 receives the frequency signal H and transmits the frequency setting signal m to the receivers 103 and 203.

The transmission occupied band control unit 408 receives the occupied band signal M, the occupied band setting signal n is received by the modulators 104 and 204, and the reception occupied band control unit 409 receives the occupied band signal M and sets the occupied band to the demodulators 105 and 205. Send signal n.
The transmission modulation scheme control unit 410 receives the modulation scheme signal N, the modulation scheme setting signal p is received by the modulators 104 and 204, and the reception modulation scheme control unit 411 receives the modulation scheme signal N and sets the modulation scheme to the demodulators 105 and 205. Send signal p.

[Description of operation]
The schematic operation of one embodiment of the wireless communication system, wireless communication method, and wireless communication program of the present invention will be described with reference to FIGS.
The wireless communication method according to the present embodiment is a wireless communication method using an FDD wireless communication system that performs point-to-point wireless communication between two first wireless devices 10 and second wireless devices 20 that are opposed to each other in space. When not affected by the channel interference wave, the transmission operation and the reception operation of the wireless communication data between the first wireless device 10 and the second wireless device 20 are respectively performed at the radio frequency f0 (from the first wireless device 10 to the second wireless device). Wireless communication to the wireless device 20) and wireless frequency f0 ′ (wireless communication from the second wireless device 20 to the first wireless device 10).

When the reception signal quality is deteriorated due to the adjacent channel interference wave, the radio communication data transmission operation and reception operation between the first radio apparatus 10 and the second radio apparatus 20 are performed at the radio frequency f1 (first radio apparatus). Radio communication from 10 to the second radio apparatus 20) and radio frequency f1 ′ (radio communication from the second radio apparatus 20 to the first radio apparatus 10).
The radio frequency f0 and the radio frequency f0 ′ correspond to the Go (uplink) / Return (downlink) radio frequency of the FDD system. Similarly, the radio frequency f1 and the radio frequency f1 ′ correspond to the Go (uplink) / Return (downlink) radio frequency of the FDD system.

  The first radio apparatus 10 to which the radio communication method of this embodiment is applied includes an interface unit 101, a transmitter 102, a receiver 103, a modulator 104, a demodulator 105, an adjacent interference wave detection unit 106, and a radio signal control unit 107. , A radio signal distributor 108 and an antenna unit 109, and the second radio apparatus 20 includes an interface unit 201, a transmitter 202, a receiver 203, a modulator 204, a demodulator 205, an adjacent interference wave detection unit 206, a radio signal It comprises a control unit 207, a radio signal distributor 208, and an antenna unit 209.

The wireless communication method of the present embodiment is a wireless communication method in which a wireless transmission system and a wireless reception system can be individually set.
Each of the first radio device 10 and the second radio device 20 is
An operation of determining that adjacent channel interference is caused by adjacent channel interference being equal to or greater than an interference wave level threshold;
An operation for detecting a radio frequency band that is not affected by the adjacent interference wave in order to avoid line quality degradation due to adjacent channel interference;
The operation of changing the setting of a new radio line using a radio frequency band that is not affected by adjacent interference waves,
An operation to determine that adjacent channel interference has decreased;
There is an operation to return to the state before the setting change.

[Operation to determine that adjacent channel interference is occurring]
An example of an operation of determining that interference from an adjacent channel has occurred in the radio signal control unit 107 in the first radio apparatus 10 will be described in detail with reference to the flowchart of FIG. In the description of the flowchart of FIG. 4, the radio signal control unit 107 in the first radio apparatus 10 will be described. The radio signal control unit 207 in the second radio apparatus 20 that is opposite to the radio also has the first radio apparatus 10 and the second radio apparatus 10. Just replacing the wireless device 20 performs the same operation.

The operation of determining that adjacent channel interference has occurred will be described with reference to the flowchart of FIG.
(Step S1)
In step S1, the radio signal control unit 107 in the first radio apparatus 10 uses the error rate information of the line signal in the demodulator 105 included in the reception information j output from the demodulator 105 in the first radio apparatus 10. A line quality monitoring unit 401 monitors the presence or absence of line quality deterioration for a certain line quality signal A, and determines whether or not there is line quality deterioration. The line quality degradation determination in step S1 is performed by determining whether or not a certain error (for example, an error rate of 10 ⁻⁶ or more) remains in the demodulated data of the demodulator 105. If the channel quality is not deteriorated or the error rate is below the predetermined value (No in step S1), the current settings (radio frequency, radio occupied band, modulation scheme) are maintained (step S7). When it is recognized that the line quality is deteriorated (Yes in step S1), the line quality signal B is transmitted to the determination unit 403.

(Step S2)
In step S2, the determination unit 403 that has received the channel degradation signal B as a result of monitoring in step S1 from the channel quality monitoring unit 401 receives the radio reception signal reception level k output from the receiver 103 in the first radio apparatus 10. However, it is determined whether or not the quality of the current setting (radio frequency, radio occupied band, modulation scheme) of the own radio channel is equal to or higher than a reception threshold that can be maintained without deterioration.

(Step S3)
If it is determined in step S2 that the radio reception signal reception level k is lower than the reception threshold due to the influence of rainfall or fading (No in step S2), the channel quality indicated by the channel degradation signal B in step S3 It is determined that the cause of the deterioration is not the deterioration due to the adjacent channel interference but the reception level drop due to rain or the like.

(Step S4)
If it is determined in step S2 that the radio reception signal reception level k has reached the reception threshold value or more (Yes in step S2), the interference wave reception level q output from the adjacent interference wave detection unit 106 in step S4 (FIG. In the example of 2, the information series A97400000047) detects whether the interference wave reception level remains as shown in FIG. 2 and is equal to or higher than the interference wave threshold (for example, 2 or more in FIG. 4).
When it is detected in step S4 that the interference wave reception level q of the adjacent channel is lower than the interference wave threshold (No in step S4), the cause of the line quality deterioration indicated by the line deterioration signal B is due to the adjacent adjacent channel interference. It is determined that the cause is not a deterioration but a reception level drop due to a propagation path fluctuation such as rainfall (step S3).

(Step S5)
If the adjacent channel interference wave reception level q (information sequence A97400000047 in the example of FIG. 4) is equal to or higher than the interference threshold (eg, 2 or higher in FIG. 4) in Step S4 (Yes in Step S4), it is adjacent in Step S5. It is determined that quality degradation has occurred due to channel interference.

(Step S6)
In order to eliminate the degradation of the channel quality due to the influence of the adjacent channel interference wave, the radio frequency band (BB in FIG. 2) where the channel quality of the received signal b does not deteriorate from the interference wave reception level q is changed to the interference wave reception level q in FIG. And the setting change operation of the radio frequency, the radio occupied band, and the modulation method is started.

[Setting change operation to avoid line quality degradation due to adjacent channel interference]
With reference to the flowchart of FIG. 5, an operation for changing the setting in cooperation between the opposing wireless devices in order to avoid channel quality degradation due to adjacent channel interference will be described.
An example of the setting change operation for avoiding channel quality deterioration due to the adjacent channel interference wave in the radio signal control unit 107 in the first radio apparatus 10 will be described in detail with reference to the flowchart of FIG. In the description of the flowchart of FIG. 5, a case will be described in which the wireless signal control unit 107 in the first wireless device 10 detects deterioration of the line quality. Even when the deterioration of the channel quality is detected, the same operation is performed by simply replacing the first radio device 10 and the second radio device 20.

(Step S11)
As shown in the flowchart of FIG. 5, in order to eliminate the influence of the interference wave from the adjacent channel, before starting the operation of changing the setting of the radio frequency, the occupied band, and the modulation method, first, the other party facing the radio In step S11, in the determination unit 403 of the wireless signal control unit 107 in the first wireless device 10, the counterpart second wireless device 20 is synchronized with the second wireless device 20 on the side. The opposite station setting change request signal D requesting the change to the same setting (radio frequency, occupied band, modulation method) is included in the modulation method setting signal p and sent to the modulator 104, and the modulator 104 transmits the transmission data f And is transmitted to the second radio device 20 on the opposite side facing the radio.

(Step S12 and Step S13)
When receiving the opposite station setting change request signal D included in the modulation method setting signal p from the first wireless device 10 (step S12), the counterpart second wireless device 20 facing the wireless side modulates at the demodulator 205 The opposite station setting change request signal D included in the system setting signal p is separated and output to the opposite station synchronization determination unit 402 of the radio signal control unit 207 in the second radio apparatus 20. Since the counter-station synchronization determination unit 402 is going to change the setting of the radio frequency, the occupied band, and the modulation method in the first radio device 10 on the other side, the second radio device 20 also synchronizes and sets the same setting. Recognizing that it is necessary to perform the change operation, generating a response signal E for changing the setting, outputting the response signal E to the determination unit 403 of the radio signal control unit 207, and ACK (Acknowledge) indicating that the request has been accepted As a signal, a modulation scheme setting signal p including a counter station setting change request signal D is returned to the first radio apparatus 10 on the counterpart side (step S13).

(Step S14)
In the radio signal control unit 107 of the first radio device 10, when detecting the modulation scheme setting signal p including the opposite station setting change request signal D returned as the ACK signal from the second radio device 20 on the other side facing the radio, Similarly to the first radio apparatus 10, the demodulator 205 separates the opposite station setting change request signal D included in the modulation scheme setting signal p and outputs it to the opposite station synchronization determination unit 402 of the radio signal control unit 207. Then, the counter station synchronization determination unit 402 generates a response signal E and outputs the response signal E to the determination unit 403 (step S14).

(Step S15 and Step S16)
The determination unit 403 of the radio signal control unit 207 in the second radio device 20 on the opposite side of the radio outputs the radio control signal G to the signal control unit 405, and transmits the radio frequency, occupied band, and modulation method of the transmission side. A setting change is instructed (step S15).
In the first radio apparatus 10, the determination unit 403 that has received the response signal E outputs the radio control signal G to the signal control unit 405 of the radio signal control unit 107 in the first radio apparatus 10, so that the radio frequency on the reception side Then, the setting change of the occupied band and the modulation method is instructed (step S16).

(Step S17 and Step S18)
Transmission in the second radio apparatus 20 that has received a frequency setting signal m serving as a radio frequency change instruction from the radio signal control section 207 in the second radio apparatus 20 via the signal control section 405 and the transmission frequency control section 406 The device 202 changes the setting of the radio frequency to the radio frequency f1 ′ that is the center frequency of the radio frequency band that is not affected by the adjacent channel interference wave detected in step S6 (step S17).
Similarly, the first radio apparatus 10 that has received the frequency setting signal m that is an instruction to change the radio frequency from the radio signal control section 107 in the first radio apparatus 10 via the signal control section 405 and the reception frequency control section 407. The receiver 103 changes the setting to the radio frequency f1 ′ that is the center frequency within the radio frequency band that is not affected by the adjacent channel interference wave detected in step S6 (step S18).

(Step S19 and Step S20)
In the second radio apparatus 20 that has received the occupied band setting signal n serving as an instruction to change the occupied band from the radio signal control section 207 in the second radio apparatus 20 via the signal control section 405 and the transmission occupied band control section 408. The modulator 204 changes the occupied frequency band to an occupied frequency band that is not affected by the adjacent channel interference wave detected in step S6 (step S19).
Similarly, the first radio that has received the occupied band setting signal n serving as an instruction to change the occupied band from the radio signal control unit 107 in the first wireless device 10 via the signal control unit 405 and the received occupied band control unit 409. The demodulator 105 in the apparatus 10 changes the occupied frequency band to an occupied frequency band that is not affected by the adjacent channel interference wave detected in step S6 (step S20).

(Step S21 and Step S22)
In the second radio apparatus 20 that has received the modulation scheme setting signal p, which is an instruction to change the modulation scheme, from the radio signal control section 207 in the second radio apparatus 20 via the signal control section 405 and the transmission modulation scheme control section 410 The modulator 204 changes the ^N of the modulation scheme ^{2N to} a value that does not change the transmission capacity before and after changing the setting of the occupied frequency band (step S21).
Similarly, the first radio that has received the modulation scheme setting signal p, which is an instruction to change the modulation scheme, from the radio signal control section 107 in the first radio apparatus 10 via the signal control section 405 and the reception modulation scheme control section 411. The demodulator 105 in the apparatus 10 changes ^N of the modulation scheme ^{2N to} a value that does not change the transmission capacity before and after changing the setting of the occupied frequency band (step S22).

(Step S23-Step S26)
Thereafter, the determination unit 403 of the radio signal control unit 207 in the second radio device 20 sets the radio frequency, the occupied band, and the modulation method for both the own second radio device 20 and the counterpart first radio device 10. Check whether or not the change has been completed (step S23), and if it is confirmed that the setting change has been completed (Yes in step S23), change operation to the setting that is not affected by the adjacent channel interference wave as a wireless transmission system Is completed (step S25).
Similarly, the determination unit 403 of the radio signal control unit 107 in the first radio device 10 sets the radio frequency, occupied band, and modulation method for both the own first radio device 10 and the counterpart second radio device 20. Check whether or not the change is completed (step S24), and if it is confirmed that the setting change is completed (Yes in step S24), change operation to the setting that is not affected by the adjacent channel interference wave as a wireless reception system Is completed (step S26).

(Step S27 and Step S28)
On the other hand, the determination unit 403 of the radio signal control unit 207 in the second radio device 20 confirms that the setting change has been completed in both or either of the own second radio device 20 and the counterpart first radio device 10. If it cannot be recognized (No in step S23), it is a case where the change operation to the setting not affected by the adjacent channel interference wave has failed, and after returning to the state before the setting change (step S27), step The process returns to S12 and returns to a state of waiting for another setting change request from the counterpart first radio apparatus 10.
Similarly, the determination unit 403 of the radio signal control unit 107 in the first radio apparatus 10 has completed the setting change in both or either of the own first radio apparatus 10 and the counterpart second radio apparatus 20. Cannot be recognized (No in step S24), the change operation to the setting that is not affected by the adjacent channel interference wave has failed, and after returning to the state before the setting change (step S28), Returning to step S1 shown in FIG. 4, the operation starts again from the operation of detecting deterioration of the line quality.

  The use of a radio frequency with a wider occupied band has a higher resistance to channel fluctuations that do not cause channel quality signal errors even if channel fluctuations such as rainfall and fading occur. When it is detected that the quality has returned to the normal state, in order to prevent frequent setting change / recovery operations from being repeated, until the preset return monitoring time T1 elapses after detecting the cancellation of the adjacent channel interference state If the state where the adjacent channel interference state has been resolved is monitored, and the cancellation state continues until the return monitoring time T1 elapses, the adjacent channel interference state is confirmed. It is desirable to perform an operation to restore the setting of the radio frequency, the occupied band, and the modulation method by determining that the problem has been resolved.

[Operation to determine that adjacent channel interference has decreased]
The radio signal control unit 107 in the first radio apparatus 10 indicates that the adjacent channel interference has fallen below a predetermined interference threshold when setting is not affected by the adjacent channel interference wave (radio frequency, occupied band, modulation method). An example of the operation at the time of determination will be described in detail with reference to the flowchart of FIG.
The case where the radio signal control unit 107 in the first radio apparatus 10 detects a decrease in the interference of the adjacent channel will be described. However, the radio signal control unit 207 in the opposing second radio apparatus 20 reduces the interference in the adjacent channel. Even in the case of detection, the same operation is performed only by exchanging the first radio apparatus 10 and the second radio apparatus 20.
In the description of the flowchart of FIG. 6, the first wireless device 10 and the wirelessly opposed second wireless device 20 are operated in a setting (radio frequency, occupied band, modulation scheme) in which the band BB is a wireless occupied band. Start from.

(Step S31)
In step S31, the radio signal control unit 107 in the first radio apparatus 10 receives the error rate information of the line signal in the demodulator 105 included in the reception information j output from the demodulator 105 in the first radio apparatus 10. The line quality monitoring unit 401 monitors the presence or absence of deterioration of the line quality.
When it is recognized that the line quality has deteriorated (Yes in step S31), the state is maintained in step S38.
On the other hand, if there is no degradation in channel quality (No in step S31), a channel degradation signal B indicating that the degradation in channel quality has been resolved is generated and output to the determination unit 403.

(Step S32)
The determination unit 403 that has received the line degradation signal B indicating that the degradation of the line quality has been resolved, the radio reception signal reception level k output from the receiver 103 in the first radio apparatus 10 is an error of the reception radio signal. It is confirmed by comparing with a predetermined reception threshold whether or not the reception level is abnormal.

(Step S33)
If the radio reception signal reception level k is lower than the predetermined reception threshold value due to the influence of rainfall or fading (No in step S32), the line quality indicated by the line degradation signal B is recovered. The cause is due to propagation path fluctuations such as rainfall, and is not due to the cancellation of adjacent channel interference (step S33). The first radio apparatus 10 and the second radio apparatus 20 facing each other wirelessly use the band BB. The state in which the operation is performed with the setting of the occupied band (radio frequency, occupied band, modulation method) is continued.

(Step S34)
If the radio reception signal reception level k has reached the reception threshold or higher and is not an abnormal reception level (Yes in step S32), the interference wave reception level output from the adjacent interference wave detection unit 106 next. It is confirmed whether or not q is lower than a predetermined interference threshold value (for example, whether the interference threshold value is <1 in FIG. 6) (step S34). In order to return to the original device setting before the adjacent channel interference occurs, the frequency band to be monitored is the frequency band for detecting the presence / absence of the interference wave between the own radio channel band and the front and rear + α bands.

(Step S35)
The adjacent interference wave detection unit 106 continuously detects interference from adjacent channels in the monitoring frequency band, and the adjacent channel interference wave reception level q from which the own radio line signal is removed is lower than a predetermined interference threshold. (In FIG. 6, for example, when the interference threshold is <1) (Yes in step S34), it is determined that quality degradation due to adjacent channel interference has been eliminated (step S35), indicating that no interference wave is generated in the adjacent channel. The operation of generating and outputting the interference wave reception level q (in the example of FIG. 6, the information series 111100000011) is performed.

(Step S36)
If it is determined that the quality degradation due to the adjacent channel interference has been resolved, the determination unit 403 of the radio signal control unit 107 determines whether the quality degradation due to the adjacent channel interference wave has been resolved even after a predetermined return monitoring time T1 has elapsed. A change operation for returning the radio frequency, the radio occupied band, and the modulation method to the original settings is started with a condition of confirming whether the process is continued (step S36).

(Step S37)
If the interference wave reception level q is not lower than the interference threshold (No in step S34), it is determined that there is still a possibility that the influence of adjacent channel interference may occur, and the original setting is restored. The operation is stopped, and the setting that does not affect the adjacent channel interference wave (the setting that avoids the deterioration of the line quality) is continued as it is (step S37). That is, the first radio apparatus 10 and the second radio apparatus 20 that are opposite to each other in radio continue to operate in a setting (radio frequency, occupied band, modulation scheme) in which the band BB is a radio occupied band.

(Step S38)
When it is recognized that the line quality has deteriorated (Yes in step S31), the first radio apparatus 10 and the second radio apparatus 20 that are opposite to each other are set with the band BB as the radio occupied band (radio frequency, occupied band, The state in which the operation is performed in the modulation method is continued (step S38).
The determination sequence in the flow of FIG. 6 is continuously determined during operation of the wireless device with settings that are not affected by the adjacent channel interference wave.

[Return to the original state before changing settings]
With reference to the flowcharts of FIGS. 7A and 7B, an operation of returning to the original state before the setting change in cooperation between the opposing wireless devices will be described.
Details of an example of a change operation in which the radio signal control unit 107 in the first radio apparatus 10 returns the setting of the radio frequency, the radio occupied band, and the modulation method to the original settings with reference to the flowcharts of FIGS. 7A and 7B. Explained.

FIG. 7A illustrates an example of a change operation for returning the radio frequency, the radio occupied band, and the modulation method to the original settings in the radio signal control unit 107 in the first radio apparatus 10 configuring the radio communication system illustrated in FIG. FIG. 7B is the latter half of the flowchart.
A, B, and C symbols (enclosed characters) enclosed in a circle at the bottom of FIG. 7A are connected to A, B, and C symbols (enclosed characters) enclosed in a circle at the top of FIG. 7B, respectively. It shall be. That is, the figure which combined FIG. 7A and FIG. 7B with the surrounding character in both figures represents one flowchart. In this way, since one figure obtained by combining FIGS. 7A and 7B with enclosing characters in both figures represents one flowchart, the combined FIGS. 7A and 7B will be collectively referred to as FIG. To do.

  In the description of the flowchart of FIG. 7, a case will be described in which the wireless signal control unit 107 in the first wireless device 10 detects the cancellation of the degradation of the line quality. However, the wireless signal in the second wireless device 20 that is wirelessly opposed is described. Even when the control unit 207 detects the cancellation of the degradation of the line quality, the same operation is performed only by exchanging the first radio apparatus 10 and the second radio apparatus 20.

The adjacent interference wave detection unit 106 continuously monitors the presence / absence of interference from the adjacent channel even in a setting that is not affected by the adjacent channel interference wave, and the reception level of the adjacent channel interference wave is detected as the reception level detection. When the interference threshold value is lower than the preset interference threshold value, the interference wave reception level q indicating that the interference wave of the adjacent channel is not generated is output to the determination unit 403.
The determination unit 403 of the radio signal control unit 107 that has received the interference wave reception level q determines that the line quality deterioration due to adjacent channel interference has been eliminated, and after receiving the interference wave reception level q, the determination unit 403 determines in advance for each radio line Monitors whether or not the line quality degradation due to adjacent channel interference continues until the recovery monitoring time T1 elapses, and if the cancellation status continues until the recovery monitoring time T1 elapses Then, it is determined that the adjacent channel interference state is surely resolved, and an operation of returning the radio frequency, the occupied band, and the modulation method to the original settings is executed. Here, the return monitoring time T1 is a time set in advance for each wireless line, and is registered and saved in the setting unit 404 in advance.
As shown in the flowchart of FIG. 7, the operation for returning the radio frequency, occupied band, and modulation method to the original setting is the reverse operation to the case of changing to the setting that is not affected by the adjacent channel interference wave shown in FIG. 5. become.

(Step S41)
The determination unit 403 of the radio signal control unit 107 in the first radio apparatus 10 confirms in advance that the interference wave level of the adjacent channel has decreased due to the interference wave reception level q output from the adjacent interference wave detection unit 106. Counting of the set return monitoring time T1 is started (step S41).

(Step S42)
Until the return monitoring time T1 elapses, it is monitored whether or not a situation has occurred in which the interference wave reception level q of the adjacent channel exceeds the predetermined interference threshold. If a state occurs in which the interference wave reception level q is equal to or greater than a predetermined interference threshold value (Yes in step S42), the process proceeds to step S43. When the state that exceeds the interference threshold does not occur until the return monitoring time T1 elapses, that is, the state where the interference wave reception level q of the adjacent channel is lower than the interference threshold continues until the return monitoring time T1 elapses. If so (No in step S42), the process proceeds to step S44.

(Step S43)
In step S43, after the occurrence of a state where the interference wave reception level q is equal to or higher than a predetermined interference threshold, it is monitored whether the state where the interference wave reception level q is lower than the predetermined interference threshold continues ( Step S43), if not continued, that is, if the state where the interference wave reception level q is equal to or greater than the interference threshold value (No in Step S43), return the radio frequency, occupied band, and modulation method to the original settings. Without performing the changing operation, the setting that is not affected by the adjacent channel interference wave is maintained as it is until it is confirmed again that the channel quality degradation state due to the adjacent channel interference has been resolved. On the other hand, when the state where the interference wave reception level q is lower than the predetermined interference threshold value continues (Yes in step S43), the process returns to the start of the return monitoring time T1 (step S41).
When the interference wave reception level q of the adjacent channel does not exceed the predetermined interference threshold until the return monitoring time T1 elapses, and the state where the interference wave reception level q is lower than the interference threshold continues (No in step S42), the process proceeds to step S44, and a change operation for returning the radio frequency, occupied band, and modulation method to the original settings is started.

(Step S44)
Before starting the operation to return the radio frequency, occupied band, and modulation method from the setting that is not affected by adjacent channel interference wave to the original setting, first, change the setting with the second radio device 20 on the other end facing the radio In order to synchronize the sequence, the determination unit 403 of the radio signal control unit 107 in the first radio apparatus 10 makes an opposite station setting change request signal for requesting the second radio apparatus 20 on the other side to return the setting. D is included in the modulation scheme control signal p, multiplexed with the transmission data f by the modulator 104, and transmitted to the opposing second radio apparatus 20 (step S44).

(Step S45 and Step S46)
When receiving the opposite station setting change request signal D included in the modulation method control signal p from the first wireless device 10 (step S45), the second radio device 20 on the other side facing the radio device receives the modulation method in the demodulator 205. The opposite station setting change request signal D included in the control signal p is separated and outputted to the opposite station synchronization determination unit 402 of the radio signal control unit 207 in the second radio apparatus 20. Since the counter-station synchronization determination unit 402 tries to return the radio frequency, occupied band, and modulation method to the original settings in the first radio device 10 on the other side, the second radio device 20 also synchronizes the same. Recognizing that it is necessary to perform the setting return operation, generate a response signal E for performing the setting return, and output the response signal E to the determination unit 403 of the wireless signal control unit 207 as well as an ACK signal indicating that the request has been accepted Then, the modulation scheme control signal p including the opposite station setting change request signal D is returned to the first radio apparatus 10 on the counterpart side (step S46).

(Step S47)
Even in the determination unit 403 on the first radio apparatus 10 side that has transmitted the modulation scheme control signal p including the opposite station setting change request signal D to the second radio apparatus 20 on the opposite party, the second radio apparatus on the opposite party When the modulation scheme control signal p including the opposite station setting change request signal D returned as the ACK signal from the wireless device 20 side is detected, the opposite station synchronization determination unit 402 generates a response signal E, and the determination unit 403 (Step S47).

(Step S48 and Step S49)
Receiving the response signal E, the determination unit 403 of the radio signal control unit 207 in the second radio apparatus 20 outputs the radio control signal G to the signal control unit 405, and transmits the radio frequency, occupied band, and modulation method on the transmission side Is instructed to change the radio frequency of transmission, change of occupied band, and change of modulation method (step S48).
Receiving the response signal E, the determination unit 403 of the wireless signal control unit 107 in the first wireless device 20 outputs the wireless control signal G to the signal control unit 405 in the first wireless device 10 to receive the wireless signal on the receiving side. In order to return the frequency, occupied band, and modulation scheme to the original settings, it is instructed to change the reception radio frequency, occupied band, and modulation scheme (step S49).

(Step S50 and Step S51)
Transmission in the second radio apparatus 20 that has received a frequency setting signal m serving as a radio frequency change instruction from the radio signal control section 207 in the second radio apparatus 20 via the signal control section 405 and the transmission frequency control section 406 The operating frequency of the device 202 is returned from the radio frequency f1 ′ not affected by the adjacent channel interference wave to the original radio frequency f0 ′ (step S50).
Similarly, in the first radio apparatus 10 that has received the frequency setting signal m serving as an instruction to change the radio frequency from the radio signal control section 107 in the first radio apparatus 10 via the signal control section 405 and the reception frequency control section 407. The operating frequency of the receiver 103 is returned from the radio frequency f1 ′ not affected by the adjacent channel interference wave to the original radio frequency f0 ′ (step S51).

(Step S52 and Step S53)
In the second radio apparatus 20 that has received the occupied band setting signal n serving as an instruction to change the occupied band from the radio signal controller 207 in the second radio apparatus 20 via the signal controller 405 and the transmission occupied band controller 408 The modulator 204 returns the occupied frequency band from the setting not affected by the adjacent channel interference wave to the original setting (step S52).
Similarly, the first radio that has received the occupied band setting signal n serving as an instruction to change the occupied band from the radio signal control unit 107 in the first wireless device 10 via the signal control unit 405 and the received occupied band control unit 409. The demodulator 105 in the apparatus 10 returns the occupied frequency band from the setting not affected by the adjacent channel interference wave to the original setting (step S53).

(Step S54 and Step S55)
In the second radio apparatus 20 that has received the modulation scheme setting signal p, which is an instruction to change the modulation scheme, from the radio signal control section 207 in the second radio apparatus 20 via the signal control section 405 and the transmission modulation scheme control section 410 The modulator 204 returns the modulation method from the setting not affected by the adjacent channel interference wave to the original setting (step S54).
Similarly, the first radio that has received the modulation scheme setting signal p, which is an instruction to change the modulation scheme, from the radio signal control section 107 in the first radio apparatus 10 via the signal control section 405 and the reception modulation scheme control section 411. The demodulator 105 in the apparatus 10 returns the modulation method from the setting not affected by the adjacent channel interference wave to the original setting (step S55).

(Step S56-Step S59)
Thereafter, the determination unit 403 of the radio signal control unit 207 in the second radio device 20 sets the change of the radio frequency, the occupied band, and the modulation method for both the second radio device 20 and the counterpart first radio device 10. Is confirmed (step S56), and when it is recognized that the setting change has been completed (Yes in step S56), the operation of returning to the setting using the original wireless channel f0 'as the wireless transmission system is performed. The wireless transmission operation is completed (step S58).
Similarly, the determination unit 403 of the radio signal control unit 107 in the first radio apparatus 10 changes the radio frequency, the occupied band, and the modulation method for both the own first radio apparatus 10 and the counterpart second radio apparatus 20. Check whether or not the setting is completed (step S57), and when the changed setting is completed (Yes in step S57), complete the return operation to the setting using the original radio channel f0 ′ as the radio reception system, A wireless reception operation is started (step S59).

(Step S60 and Step S61)
On the other hand, when the determination unit 403 of the radio signal control unit 207 in the second radio apparatus 20 cannot recognize that the change setting has been completed (No in step S56), the return operation to the original setting has failed. After returning to the original setting without being affected by the adjacent channel interference wave before returning (step S60), the process returns to step S45, and the setting is reset again from the first radio apparatus 10 on the other side. Return to waiting for request.
Similarly, when the determination unit 403 of the radio signal control unit 107 in the first radio apparatus 10 cannot recognize that the change setting has been completed (No in step S57), the return operation to the original setting has failed. In this case, the original setting is temporarily restored to the setting that is not affected by the adjacent channel interference wave before the restoration (step S61), and then the process returns to step S31 shown in FIG. Redo from action to detect resolution.
When it is detected that the degradation of the line quality due to the adjacent channel interference wave is detected as in the above operation, the setting using the radio frequency f1 ′ that is not affected by the adjacent channel interference wave is changed to the original radio frequency f0 ′. Return to the setting using.

[Overview of setting change]
One embodiment of the wireless communication system, wireless communication method, and wireless communication program of the present invention will be described with reference to the operation example of the wireless communication system shown in FIGS. 1 to 7B and the explanatory diagram of FIG.
FIG. 8 is an explanatory diagram for explaining an example of the operation of the radio communication system shown in FIGS. 1 to 7B, in which the return (downlink: radio reception frequency f0 ′) of the first radio apparatus 10 is adjacent channel interference wave. An example of the operation for changing the radio frequency, the occupied band, and the modulation scheme so as not to be affected by the adjacent channel interference wave is described taking the case where the line transmission quality deteriorates due to the influence of the above.

The original setting before the influence of the adjacent channel interference wave is the radio frequency f0 ′, the modulation method QPSK, and the wireless transmission using the entire radio occupied band of the own wireless line is performed, and the adjacent channel interference is both upper and lower. In this example, the band (BB) that is affected by the adjacent channel and is not affected by the interference wave has reached half of the original. As a result, the radio frequency f1 ′, the modulation method 16QAM, and the radio occupied band are set to 1/2. This is a modified example.
In FIG. 8, for simplification of the drawing, the name of each functional block is omitted, and only the reference numerals given in FIG. 1 are described in the frame of each functional block.

  An example of normal operation before being affected by the adjacent channel interference wave is shown in FIG. Both the first radio apparatus 10 and the second radio apparatus 20 operate using QPSK as the modulation method, and the transmission data e input to the second radio apparatus 20 is transmitted to the first radio apparatus 10 of the opposite station using the radio frequency f0 ′. A state in which the data is wirelessly transmitted and output as reception data d from the first wireless device 10 to the outside is shown.

On the other hand, the setting that avoids the influence of the adjacent channel interference wave is shown in (2) of FIG.
According to this, when setting to avoid line transmission quality degradation, the occupied band that is not affected by the detected adjacent channel interference wave (in this example, it is 1/2 of normal operation), and the center of the occupied band Using the frequency f1 ′ and changing to the 16QAM modulation method (modulation method in which the transmission capacity does not change during normal operation), the first radio device 10 changes the reception side, and the second radio device 20 changes the transmission side. Transmission data e input to the second radio apparatus 20 is wirelessly transmitted to the first radio apparatus 10 of the opposite station using the radio frequency f1 ′, and is output to the outside as received data d from the first radio apparatus 10 Show.

  During normal operation that is not affected by the adjacent channel interference wave shown in FIG. 8 and using the QPSK (Quadrature Phase Shift Keying) modulation method of the radio frequency f0 ′, When an adjacent channel interference wave is newly added to an adjacent channel of a wireless line, interference such as the shaded area shown in "Adjacent channel interference occurrence" occurs, and an error occurs in the QPSK signal of the own wireless line. become. When adjacent channel interference occurs, as long as the adjacent channel interference continues, a state in which the quality of wireless communication transmission in operation at the radio frequency of f0 ′ is deteriorated continues.

  In this embodiment, when a degradation state of transmission quality due to adjacent channel interference occurs, the adjacent channel interference wave is detected and detected as in the setting in which the influence of the adjacent channel interference wave shown in FIG. 8 is avoided. By changing the setting to a radio band that does not cause degradation in transmission quality, it is possible to escape from the degradation state of transmission quality due to adjacent channel interference and improve the radio transmission quality. In addition, by changing the settings of the wireless transmission system and the wireless reception system independently, wireless lines that transmit at the radio frequency of f0 where transmission quality deterioration due to adjacent channel interference has not occurred can be operated without changing the settings. Can continue.

In order to maintain the transmission capacity of the radio signal as it is, ^N of modulation scheme 2N is changed in accordance with the changed occupied band. When the occupied band is changed to ½ when the modulation method in the normal state is QPSK (N = 2), ^N of the modulation method 2 ^N is changed to 16QAM (N = 2 × 2) which is doubled. For example, when the occupied band is changed to ¼, ^N of modulation scheme 2 ^N is changed to 256 QAM (N = 2 × 4), which is four times. When the normal state is 16QAM (N = 4) and the occupied band is changed to ½, it is changed to 256QAM (N = 4 × 2) and the transmission capacity is maintained before and after the setting change.

  The configuration of the preferred embodiment of the present invention has been described above. However, it should be noted that such embodiments are merely examples of the present invention and do not limit the present invention in any way. Those skilled in the art will readily understand that various modifications and changes can be made according to a specific application without departing from the gist of the present invention.

  All or part of the wireless communication system, the wireless device, and the wireless communication method of each embodiment and example described above can be realized by hardware, software, or a combination thereof. Here, “realized by software” means realized by a computer reading and executing a program. When configured by hardware, some or all of the components of the wireless communication system and the wireless device shown in FIG. 1 to FIG. 3 are, for example, LSI (Large Scale Integrated circuit), ASIC (Application Specific Integrated Circuit), gate An integrated circuit (IC) such as an array or an FPGA (Field Programmable Gate Array) can be used.

  When configured by software, a part of the components of the first or second radio apparatus shown in FIGS. 1 to 3 other than the components configured by hardware such as the antenna units 109 and 209 (for example, adjacent interference wave detection) Units 106 and 206, wireless signal control units 107 and 207) or all functions, a storage unit such as a hard disk or ROM storing a program describing the function, a display unit such as a liquid crystal display, and data necessary for calculation. This can be realized by storing information necessary for calculation in the DRAM and operating the program by the CPU in a computer constituted by the DRAM, CPU, and bus connecting each unit.

The program may be stored using various types of non-transitory computer readable media and supplied to the computer. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Read Only Memory), CD- R, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)). The program may also be supplied to the computer by various types of transitory computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.
A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
A wireless communication system that performs point-to-point wireless communication between two opposing first and second wireless devices,
Each of the first wireless device and the second wireless device is
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A radio reception system having a receiver capable of setting an operating frequency, which is a center frequency of a radio frequency band, and a demodulator capable of setting a modulation scheme and a radio occupied band;
Channel quality monitoring means for detecting whether or not the radio transmission quality of the received signal of the own radio channel has deteriorated;
An adjacent interference wave detecting means for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio device;
Radio frequency changing means for individually changing the operating frequencies of the transmitter and the receiver to radio frequencies that are not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
Occupied band changing means for individually changing the radio occupied bands of the modulator and the demodulator to radio occupied bands that are not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves When,
Modulation method changing means for individually changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the modulator and the demodulator,
When it is determined that the radio transmission quality of the received signal has deteriorated due to the adjacent channel interference wave, the radio frequency changing means, the occupied band changing means, the modulation method changing means causes the operating frequency of the receiver, the demodulator The radio occupied bandwidth of the demodulator, the modulation method of the demodulator is changed, or the radio transmission quality deterioration notification of the received signal due to the adjacent channel interference wave is received from the first or second radio device on the other side facing the radio In this case, the radio frequency changing means, the occupied band changing means, the control means for changing the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation method of the modulator by the modulation method changing means,
A wireless communication system comprising:

(Appendix 2)
When the adjacent channel interference wave is no longer detected by the adjacent interference wave detection unit, the control unit changes the radio frequency in order to return to the original setting from the setting that avoids deterioration of radio transmission quality due to the adjacent channel interference wave. Means for changing the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator from the setting avoiding the deterioration of the radio transmission quality. Or when receiving a notification that the adjacent channel interference wave is no longer detected from the first or second radio device on the other side facing the radio, the radio frequency change means, the occupied band change means, The modulation scheme changing means sets the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator to avoid degradation of radio transmission quality. The wireless communication system according to Supplementary Note 1 back to the original settings from.

(Appendix 3)
The adjacent interference wave detecting means is a wireless line receiving means for receiving a wireless line band and a predetermined band before and after, a wireless signal removing means for removing the own radio signal from a received signal including an adjacent channel wave, and the own radio signal is removed. The wireless communication system according to appendix 1 or 2, further comprising: a reception level detection unit that receives the received interference wave reception signal and detects an interference wave reception level for each frequency of a predetermined band before and after the own wireless line band.

(Appendix 4)
Point-to-point wireless communication is performed between two opposing first and second wireless devices,
Each of the first wireless device and the second wireless device is
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A wireless communication method of a wireless communication system, comprising: a receiver that can set an operating frequency that is a center frequency of a radio frequency band; and a wireless reception system that includes a demodulator that can set a modulation scheme and a radio occupied band
In the first wireless device,
A detecting step for detecting whether or not the wireless transmission quality of the received signal of the wireless line has deteriorated;
An adjacent interference wave detecting step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A first modulation scheme change step of changing the modulation scheme of the demodulator so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When it is detected whether the cause of the deterioration of the transmission quality of the received signal is due to the adjacent channel interference wave to the radio frequency band occupied as the radio frequency used by the own radio device, the second radio device, Transmitting a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave, and
In the second wireless device,
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When the deterioration notification is received from the first radio apparatus, the second radio frequency changing step, the second occupied band changing step, and the second modulation scheme changing means are used to operate the transmitter. A second control step for controlling to change a radio occupied band of the modulator and a modulation scheme of the modulator;
A wireless communication method.

(Appendix 5)
In the first control step, when an adjacent channel interference wave is not detected in the adjacent interference wave detection step, in order to return to the original setting from the setting that avoids radio transmission quality deterioration due to the adjacent channel interference wave, Using the first radio frequency changing step, the first occupied band changing step, and the first modulation scheme changing step, the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation scheme of the demodulator are changed. , Control to return to the original setting from the setting that avoids degradation of wireless transmission quality,
The second control step includes the second radio frequency changing step and the second occupied band changing step when a notification indicating that the adjacent channel interference wave is no longer detected is received from the first radio device facing the radio. Using the second modulation scheme change step, the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator are changed from a setting that avoids deterioration of radio transmission quality to an original setting. The wireless communication method according to attachment 4, wherein the wireless communication method is controlled to return.

(Appendix 6)
The adjacent interference wave detecting step includes a radio channel receiving step for receiving a radio channel band and a predetermined band before and after, a radio signal removing step for removing the own radio signal from a received signal including an adjacent channel wave, and an interference wave received signal. The wireless communication method according to appendix 4 or 5, further comprising: a reception level detecting step for detecting a reception level of an interference wave for each frequency of a predetermined frequency band before and after the wireless line band.

(Appendix 7)
A wireless device of a wireless communication system that performs point-to-point wireless communication between two opposing wireless devices,
The wireless device includes a transmitter that can set an operating frequency that is a center frequency of a radio frequency band, and a radio transmission system that includes a modulator that can set a modulation scheme and a radio occupied band,
A radio reception system having a receiver capable of setting an operating frequency, which is a center frequency of a radio frequency band, and a demodulator capable of setting a modulation scheme and a radio occupied band;
Channel quality monitoring means for detecting whether or not the radio transmission quality of the received signal of the own radio channel has deteriorated;
An adjacent interference wave detecting means for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio device;
Radio frequency changing means for individually changing the operating frequencies of the transmitter and the receiver to radio frequencies that are not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
Occupied band changing means for individually changing the radio occupied bands of the modulator and the demodulator to radio occupied bands that are not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves When,
Modulation method changing means for individually changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the modulator and the demodulator,
When it is determined that the radio transmission quality of the received signal has deteriorated due to the adjacent channel interference wave, the radio frequency changing means, the occupied band changing means, the modulation method changing means causes the operating frequency of the receiver, the demodulator The radio frequency, the modulation method of the demodulator is changed, or the radio frequency of the received signal due to the adjacent channel interference wave is received from the radio device on the opposite side of the radio. Changing means, the occupied band changing means, the modulation means changing means for changing the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation means of the modulator;
A wireless device.

(Appendix 8)
When the adjacent channel interference wave is no longer detected by the adjacent interference wave detection unit, the control unit changes the radio frequency in order to return to the original setting from the setting that avoids deterioration of radio transmission quality due to the adjacent channel interference wave. Means for changing the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator from the setting avoiding the deterioration of the radio transmission quality. Or when receiving a notification that the adjacent channel interference wave is no longer detected from the first or second radio device on the other side facing the radio, the radio frequency change means, the occupied band change means, The modulation scheme changing means sets the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator to avoid degradation of radio transmission quality. The wireless communication apparatus according to Supplementary Note 7 to return to the original settings from.

(Appendix 9)
The adjacent interference wave detecting means is a wireless line receiving means for receiving a wireless line band and a predetermined band before and after, a wireless signal removing means for removing the own radio signal from a received signal including an adjacent channel wave, and the own radio signal is removed. 9. The wireless communication apparatus according to appendix 7 or 8, further comprising: a reception level detection unit that receives the received interference wave reception signal and detects an interference wave reception level for each frequency of a predetermined band before and after the own wireless line band.

(Appendix 10)
Perform point-to-point wireless communication with the opposing wireless device,
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A wireless communication method for a wireless device comprising: a receiver that can set an operating frequency that is a center frequency of a radio frequency band; and a radio reception system that includes a demodulator that can set a modulation scheme and a radio occupied band,
A detection step for detecting whether or not the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detecting step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A modulation method change step for changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the demodulator,
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When detecting whether the transmission quality of the received signal is deteriorated due to the adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio apparatus, the second radio apparatus Transmitting a notification of deterioration of radio transmission quality of the received signal due to the adjacent channel interference wave;
Or the first process to do
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When receiving a notification of deterioration of the wireless transmission quality of the received signal due to the adjacent channel interference wave from the first wireless device, the second wireless frequency changing step, the second occupied band changing step, the second A second control step for controlling to change the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator using the modulation scheme changing means of:
A wireless communication method for performing at least one of the second processing.

(Appendix 11)
In the first control step, when an adjacent channel interference wave is not detected in the adjacent interference wave detection step, in order to return to the original setting from the setting that avoids radio transmission quality deterioration due to the adjacent channel interference wave, Using the first radio frequency changing step, the first occupied band changing step, and the first modulation scheme changing step, the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation scheme of the demodulator are changed. , Control to return to the original setting from the setting that avoids degradation of wireless transmission quality,
The second control step includes the second radio frequency changing step and the second occupied band changing step when a notification indicating that the adjacent channel interference wave is no longer detected is received from the first radio device facing the radio. Then, using the second modulation scheme changing step, the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator are returned from the setting avoiding the deterioration of the radio transmission quality to the original setting. The wireless communication method according to supplementary note 10, which is controlled as described above.

(Appendix 12)
The adjacent interference wave detecting step includes a radio channel receiving step for receiving a radio channel band and a predetermined band before and after, a radio signal removing step for removing the own radio signal from a received signal including an adjacent channel wave, and an interference wave received signal. 12. The wireless communication method according to appendix 10 or 11, further comprising: a reception level detecting step of detecting a reception level of an interference wave for each frequency of a predetermined bandwidth before and after the wireless line band.

(Appendix 13)
Perform point-to-point wireless communication with the opposing wireless device,
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A computer as a wireless device having a receiver that can set an operating frequency that is a center frequency of a radio frequency band and a radio receiving system that has a demodulator that can set a modulation scheme and a radio occupied band
A detection step for detecting whether or not the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detecting step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A modulation method change step for changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the demodulator,
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When detecting whether the transmission quality of the received signal is deteriorated due to the adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio apparatus, the second radio apparatus Transmitting a notification of deterioration of radio transmission quality of the received signal due to the adjacent channel interference wave;
Or the first process to do
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When receiving a notification of deterioration of the wireless transmission quality of the received signal due to the adjacent channel interference wave from the first wireless device, the second wireless frequency changing step, the second occupied band changing step, the second A second control step for controlling to change the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator using the modulation scheme changing means of:
A wireless communication program that executes at least one of the second processing.

(Appendix 14)
In the first control step, when an adjacent channel interference wave is not detected in the adjacent interference wave detection step, in order to return to the original setting from the setting that avoids radio transmission quality deterioration due to the adjacent channel interference wave, Using the first radio frequency changing step, the first occupied band changing step, and the first modulation scheme changing step, the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation scheme of the demodulator are changed. , Control to return to the original setting from the setting that avoids degradation of wireless transmission quality,
The second control step includes the second radio frequency changing step and the second occupied band changing step when a notification indicating that the adjacent channel interference wave is no longer detected is received from the first radio device facing the radio. Then, using the second modulation scheme changing step, the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator are returned from the setting avoiding the deterioration of the radio transmission quality to the original setting. The wireless communication program according to attachment 13, which is controlled as described above.

(Appendix 15)
The adjacent interference wave detecting step includes a radio channel receiving step for receiving a radio channel band and a predetermined band before and after, a radio signal removing step for removing the own radio signal from a received signal including an adjacent channel wave, and an interference wave received signal. 14. The wireless communication program according to appendix 12 or 13, further comprising: a reception level detecting step for detecting an interference wave reception level for each frequency of a predetermined bandwidth before and after the wireless line band.

  The present invention can be applied to a wireless communication system and a wireless device that perform wireless communication in a fixed point-to-point manner that is opposed to a wireless space.

101 wireless device (first wireless device)
DESCRIPTION OF SYMBOLS 102 Transmitter 103 Receiver 104 Modulator 105 Demodulator 106 Adjacent interference wave detection part 107 Radio signal control part 108 Radio signal distributor 109 Antenna part 110 Interface part 201 Radio | wireless apparatus (2nd radio | wireless apparatus)
202 transmitter 203 receiver 204 modulator 205 demodulator 206 adjacent interference wave detection unit 207 radio signal control unit 208 radio signal distributor 209 antenna unit 210 interface unit 301 own radio channel receiver 302 own radio signal cancellation filter 303 reception level detection 401 Channel quality monitoring unit 402 Inter-station synchronization determination unit 403 Determination unit 404 Setting unit 405 Signal control unit 406 Transmission frequency control unit 407 Reception frequency control unit 408 Transmission occupied band control unit 409 Reception occupied band control unit 410 Transmission modulation method control Unit 411 reception modulation method control unit a radio reception signal b reception signal c demodulated signal d reception data e transmission data f transmission data g modulation signal h radio transmission signal j reception information k radio reception signal reception level m frequency setting signal n occupation band setting Signal p Modulation system setting Signal q interference wave receiving level
r Received signal s Interference wave received signal A Line quality signal B Line degraded signal D Opposite station setting change request signal E Response signal F Setting information G Radio control signal H Frequency signal M Occupied band signal N Modulation method signal

Claims (9)

A wireless communication system that performs point-to-point wireless communication between two opposing first and second wireless devices,
Each of the first wireless device and the second wireless device is
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A radio reception system having a receiver capable of setting an operating frequency, which is a center frequency of a radio frequency band, and a demodulator capable of setting a modulation scheme and a radio occupied band;
Channel quality monitoring means for detecting whether or not the radio transmission quality of the received signal of the own radio channel has deteriorated;
An adjacent interference wave detecting means for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as a radio frequency used by the own radio device;
Radio frequency changing means for individually changing the operating frequencies of the transmitter and the receiver to radio frequencies that are not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
Occupied band changing means for individually changing the radio occupied bands of the modulator and the demodulator to radio occupied bands that are not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves When,
Modulation method changing means for individually changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the modulator and the demodulator,
When it is determined that the radio transmission quality of the received signal has deteriorated due to the adjacent channel interference wave, the radio frequency changing means, the occupied band changing means, the modulation method changing means causes the operating frequency of the receiver, the demodulator The radio occupied bandwidth of the demodulator, the modulation method of the demodulator is changed, or the radio transmission quality deterioration notification of the received signal due to the adjacent channel interference wave is received from the first or second radio device on the other side facing the radio In this case, the radio frequency changing means, the occupied band changing means, the control means for changing the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation method of the modulator by the modulation method changing means,
A wireless communication system comprising:   When the adjacent channel interference wave is no longer detected by the adjacent interference wave detection unit, the control unit changes the radio frequency in order to return to the original setting from the setting that avoids deterioration of radio transmission quality due to the adjacent channel interference wave. Means for changing the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator from the setting avoiding the deterioration of the radio transmission quality. Or when receiving a notification that the adjacent channel interference wave is no longer detected from the first or second radio device on the other side facing the radio, the radio frequency change means, the occupied band change means, The modulation scheme changing means sets the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator to avoid degradation of radio transmission quality. The wireless communication system according to claim 1 to return to the original settings from.   The adjacent interference wave detecting means is a wireless line receiving means for receiving a wireless line band and a predetermined band before and after, a wireless signal removing means for removing the own radio signal from a received signal including an adjacent channel wave, and the own radio signal is removed. The radio communication system according to claim 1 or 2, further comprising: a reception level detecting unit that receives an interference wave reception signal and detects an interference wave reception level for each frequency of a predetermined band before and after the own radio line band. Point-to-point wireless communication is performed between two opposing first and second wireless devices,
Each of the first wireless device and the second wireless device is
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A wireless communication method of a wireless communication system, comprising: a receiver that can set an operating frequency that is a center frequency of a radio frequency band; and a wireless reception system that includes a demodulator that can set a modulation scheme and a radio occupied band
In the first wireless device,
A detecting step for detecting whether or not the wireless transmission quality of the received signal of the wireless line has deteriorated;
An adjacent interference wave detection step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as a radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A first modulation scheme change step of changing the modulation scheme of the demodulator so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When it is detected whether the cause of the deterioration of the transmission quality of the received signal is due to the adjacent channel interference wave to the radio frequency band occupied as the radio frequency used by the own radio device, the second radio device, Transmitting a deterioration notification of the radio transmission quality of the received signal due to the adjacent channel interference wave, and
In the second wireless device,
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When the deterioration notification is received from the first radio apparatus, the second radio frequency changing step, the second occupied band changing step, and the second modulation scheme changing means are used to operate the transmitter. A second control step for controlling to change a radio occupied band of the modulator and a modulation scheme of the modulator;
A wireless communication method. In the first control step, when an adjacent channel interference wave is not detected in the adjacent interference wave detection step, in order to return to the original setting from the setting that avoids radio transmission quality deterioration due to the adjacent channel interference wave, Using the first radio frequency changing step, the first occupied band changing step, and the first modulation scheme changing step, the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation scheme of the demodulator are changed. , Control to return to the original setting from the setting that avoids degradation of wireless transmission quality,
The second control step includes the second radio frequency changing step and the second occupied band changing step when a notification indicating that the adjacent channel interference wave is no longer detected is received from the first radio device facing the radio. Then, using the second modulation scheme changing step, the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator are returned from the setting avoiding the deterioration of the radio transmission quality to the original setting. The wireless communication method according to claim 4, wherein the wireless communication method is controlled as follows.   The adjacent interference wave detecting step includes a radio channel receiving step for receiving a radio channel band and a predetermined band before and after, a radio signal removing step for removing the own radio signal from a received signal including an adjacent channel wave, and an interference wave received signal. 6. The wireless communication method according to claim 4, further comprising: a reception level detecting step of detecting an interference wave reception level for each frequency of a predetermined bandwidth before and after the wireless line band. A wireless device of a wireless communication system that performs point-to-point wireless communication between two opposing wireless devices,
The wireless device includes a transmitter that can set an operating frequency that is a center frequency of a radio frequency band, and a radio transmission system that includes a modulator that can set a modulation scheme and a radio occupied band,
A radio reception system having a receiver capable of setting an operating frequency, which is a center frequency of a radio frequency band, and a demodulator capable of setting a modulation scheme and a radio occupied band;
Channel quality monitoring means for detecting whether or not the radio transmission quality of the received signal of the own radio channel has deteriorated;
An adjacent interference wave detecting means for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as a radio frequency used by the own radio device;
Radio frequency changing means for individually changing the operating frequencies of the transmitter and the receiver to radio frequencies that are not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
Occupied band changing means for individually changing the radio occupied bands of the modulator and the demodulator to radio occupied bands that are not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves When,
Modulation method changing means for individually changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the modulator and the demodulator,
When it is determined that the radio transmission quality of the received signal has deteriorated due to the adjacent channel interference wave, the radio frequency changing means, the occupied band changing means, the modulation method changing means causes the operating frequency of the receiver, the demodulator The radio frequency, the modulation method of the demodulator is changed, or the radio frequency of the received signal due to the adjacent channel interference wave is received from the radio device on the opposite side of the radio. Changing means, the occupied band changing means, the modulation means changing means for changing the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation means of the modulator;
A wireless device. Perform point-to-point wireless communication with the opposing wireless device,
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A wireless communication method for a wireless device comprising: a receiver that can set an operating frequency that is a center frequency of a radio frequency band; and a radio reception system that includes a demodulator that can set a modulation scheme and a radio occupied band,
A detection step for detecting whether or not the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detection step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as a radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A modulation method change step for changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the demodulator,
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When detecting whether the transmission quality of the received signal is deteriorated due to the adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio apparatus, the second radio apparatus Transmitting a notification of deterioration of radio transmission quality of the received signal due to the adjacent channel interference wave;
Or the first process to do
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When receiving a notification of deterioration of the wireless transmission quality of the received signal due to the adjacent channel interference wave from the first wireless device, the second wireless frequency changing step, the second occupied band changing step, the second A second control step for controlling to change the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator using the modulation scheme changing means of:
A wireless communication method for performing at least one of the second processing. Perform point-to-point wireless communication with the opposing wireless device,
A radio transmission system having a transmitter capable of setting an operating frequency which is a center frequency of a radio frequency band, and a modulator capable of setting a modulation scheme and a radio occupied band;
A computer as a wireless device having a receiver that can set an operating frequency that is a center frequency of a radio frequency band and a radio receiving system that has a demodulator that can set a modulation scheme and a radio occupied band
A detection step for detecting whether or not the radio transmission quality of the received signal of the own radio line has deteriorated;
An adjacent interference wave detection step for detecting whether or not the cause of the deterioration of the transmission quality of the received signal is due to an adjacent channel interference wave in a radio frequency band occupied as a radio frequency used by the own radio device;
A first radio frequency changing step of changing the operating frequency of the receiver to a radio frequency that is not affected by adjacent channel interference in order to avoid degradation of radio transmission quality due to adjacent channel interference waves;
A first occupied band changing step of changing the radio occupied band of the demodulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid degradation of wireless transmission quality due to adjacent channel interference waves;
A modulation method change step for changing the modulation method so that the transmission capacity does not change before and after the setting change according to the changed occupied band, the modulation method of the demodulator,
The first radio frequency change is detected when it is detected whether or not the transmission quality of the received signal is deteriorated due to an adjacent channel interference wave in a radio frequency band occupied as the radio frequency used by the own radio apparatus. Controlling to change the operating frequency of the receiver, the radio occupied band of the demodulator, and the modulation method of the demodulator using the step, the first occupied band changing step, and the first modulation method changing step. A first control step;
When detecting whether the transmission quality of the received signal is deteriorated due to the adjacent channel interference wave in the radio frequency band occupied as the radio frequency used by the own radio apparatus, the second radio apparatus Transmitting a notification of deterioration of radio transmission quality of the received signal due to the adjacent channel interference wave;
Or the first process to do
Receiving the degradation notification from the first wireless device;
Second radio frequency change for changing the operating frequency of the transmitter to a radio frequency not affected by adjacent channel interference in order to avoid deterioration of radio transmission quality due to adjacent channel interference waves based on the deterioration notification Steps,
Based on the deterioration notification, a second occupation that changes the radio occupied band of the modulator to a radio occupied band that is not affected by adjacent channel interference in order to avoid deterioration of wireless transmission quality due to adjacent channel interference waves. A bandwidth change step;
A second modulation scheme change step of changing the modulation scheme of the modulator based on the deterioration notification so that the transmission capacity does not change before and after the setting change according to the changed occupied band;
When receiving a notification of deterioration of the wireless transmission quality of the received signal due to the adjacent channel interference wave from the first wireless device, the second wireless frequency changing step, the second occupied band changing step, the second A second control step for controlling to change the operating frequency of the transmitter, the radio occupied band of the modulator, and the modulation scheme of the modulator using the modulation scheme changing means of:
A wireless communication program that executes at least one of the second processing.