JP2001069093A - Radio communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress useless data transmission processing by making communication in an excellent state of channels in wireless data communication and to enhance the communication quality by reducing a data error. SOLUTION: The radio communication equipment is provided with a transmission control means including a transmission buffer control circuit 4, a discrimination pattern addition section 6, a discrimination section 7 and a discrimination result noise section 8 or the like, in which one station transmits a radio channel quality discrimination pattern to other station, the other station discrimination a state of a radio channel on the basis of the radio channel quality discrimination pattern, returns the discrimination result to the one station and the one station controls data transmission to the other station depending on the returned discrimination result.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless communication device for performing wireless data communication, and more particularly to a wireless communication device capable of controlling a transmission process according to a state of a wireless line.

[0002]

2. Description of the Related Art In conventional wireless communication, since the state of a wireless channel is deteriorated due to shielding, fading, and the like, and the quality of transmitted data is deteriorated, it is necessary to compensate for transmitted data. FIG. 5 shows, for example, JP-A-63-268326.
FIG. 1 is a block diagram showing a circuit configuration of a conventional wireless communication device disclosed in Japanese Patent Laid-Open Publication No. H10-15095. In FIG. 5, 11 is a CPU,
12 is a line checking means, 13 is a line state determining means, 1
4 is a transmission mode determining means, 15 is a mode designating means, 16
Is a transmission / reception unit. FIG. 6 is a conceptual diagram of a control signal and a data signal communicated between a calling station and a called station by a conventional wireless communication device.

Next, the operation of the conventional wireless communication device will be described. The calling station controls the transmitting / receiving section 16 and the line checking means 12 periodically sends a line check signal S to the called station.
Send 1 The called station uses the line state determination means 13 to determine the line state and returns a return signal S indicating the line state determination result.
2 to the calling station. In the calling station, the transmission mode is determined by the transmission mode determining means 14 based on the return signal S2, and the transmission mode specifying means 15 notifies the called station of the transmission mode specifying signal S3.

For example, the line check signal S1 which the called station periodically receives from the call station is checked by the line check means 12, and if the line state is judged good by the line state judgment means 13, the transmission quality is relatively high. If the result of the determination is not good, data is transmitted to the called station using an error correction code with relatively high transmission quality.

[0005] However, this radio communication apparatus needs to have a plurality of error correction code circuits and control circuits, which increases the circuit load. Also, if line degradation occurs such that an error cannot be corrected even with the use of an error correction code with high transmission quality, the called station cannot receive normal data for the data transmission processing performed by the calling station, Is retransmitted, which leads to an increase in the used bandwidth.

In the "transmission output control method" disclosed in Japanese Patent Application Laid-Open No. 61-95626, a transmitting station monitors the use status of a communication channel, and inserts a line quality check code into an empty communication channel. In this case, the result of error detection at the receiving station is returned to the opposite station via a control signal line to monitor the line condition and control the output of the transmitter according to the line condition.

In this radio communication apparatus, the output of the transmitter increases when the line condition is poor, and if the data is still incorrect, retransmission is performed, which leads to an increase in the band used. Further, in a state where the line is congested and there is no empty communication path, a line status monitoring means for inserting and transmitting a line quality check code cannot be applied.

[0008]

Since the conventional wireless communication apparatus is configured as described above, in the former wireless communication apparatus, data retransmission processing is performed when the line quality is deteriorated. In the state where the band used increases and the transmitter output increases in the latter wireless communication device, and the line is congested and there is no empty communication path, a line quality check code for monitoring the line state cannot be inserted, and the line There has been a problem that the situation monitoring means may not function.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In wireless data communication, communication is performed in a good line condition, thereby suppressing useless data transmission processing and reducing data errors. It is an object of the present invention to obtain a wireless communication device capable of reducing the communication quality and improving the communication quality. Also,
Simplify the monitoring procedure to increase the processing capacity of user data,
It is another object of the present invention to obtain a wireless communication device capable of efficiently using a transmission buffer.

[0010]

A radio communication apparatus according to the present invention transmits a radio channel quality judgment pattern from one station to the other station, and the other station receives the radio channel quality judgment pattern. The state of the wireless line is determined based on a pattern, the result of the determination is returned to the one station side, and the one station side transmits data to the other station side in accordance with the returned determination result. Transmission control means for controlling the transmission of the data.

[0011] A wireless communication apparatus according to the present invention includes a transmission buffer unit for buffering data to be transmitted to a wireless line and a reception buffer unit for buffering data received from the wireless line, from one station to the other station. A judgment pattern adding unit for sending a radio line quality judgment pattern,
A determination unit that determines the state of the wireless channel based on the received wireless channel quality determination pattern; and a determination result notification that returns the determination result determined by the determination unit to a side that has inserted the wireless channel quality determination pattern. And a transmission buffer control circuit that controls input / output of data to / from the transmission buffer unit and controls transmission according to the determination result returned by the determination result notification unit.

The wireless communication apparatus according to the present invention transmits data to one station only when it is determined that the state of the wireless line is good based on the determination result returned from the other station. And a transmission control means for performing the transmission.

[0013] In the wireless communication apparatus according to the present invention, one station extends the transmission interval of the wireless channel determination pattern in accordance with the determination result of the status of the wireless channel returned from the other station. The information on the transmission interval of the wireless channel determination pattern is notified to the side.

[0014] The radio communication apparatus according to the present invention thins out data that permits deterioration depending on whether data to be transmitted to the radio line is data that permits deterioration or data that does not permit deterioration. A transmission buffer corresponding to the thinned-out portion is allocated to data that does not allow the deterioration.

According to the radio communication apparatus of the present invention, the data to be transmitted to the radio line is determined based on whether the data permits the degradation or the data which does not permit the degradation. , And only data that does not allow deterioration is accumulated in the transmission buffer.

A radio communication apparatus according to the present invention transmits a radio channel quality determination pattern from the other station on the receiving side to one station on the transmitting side, and transmits the radio channel quality determination pattern received by the transmitting side. The transmission side determines the state of the wireless line based on the transmission side, and includes a transmission control unit that controls transmission of data from the transmission side to the reception side according to the determination result. .

A wireless communication apparatus according to the present invention includes a transmission buffer unit for buffering data to be transmitted to a wireless line, a reception buffer unit for buffering data received from the wireless line, and a wireless line quality determination pattern. A determination pattern adding unit for sending from the transmission side to the transmission side, a determination unit for receiving the wireless channel quality determination pattern on the transmission side and determining the state of the wireless line, and the transmission buffer unit according to the determination result by the determination unit And a transmission buffer control circuit for controlling input / output of data to / from the transmission side and controlling transmission of data from the transmission side to the reception side on the transmission side.

The radio communication apparatus according to the present invention transmits data to the receiving side only when the transmitting side determines that the state of the radio channel is good based on the radio channel quality judgment pattern sent from the receiving side. Is transmitted.

According to the radio communication apparatus of the present invention, the transmission interval of the radio channel determination pattern is extended from the transmission side to the reception side in accordance with the status of the radio channel determined from the radio channel quality determination pattern transmitted from the reception side. And the receiving side extends the transmission interval of the wireless channel quality determination pattern in accordance with the instruction for extending the transmission interval.

The wireless communication apparatus according to the present invention is characterized in that the state of the wireless channel determined from the wireless channel quality determination pattern sent from the receiving side and the data transmitted from the transmitting side to the receiving side are data allowing degradation. Or the data which does not allow the deterioration, the transmitting side thins out the data which allows the deterioration, and allocates a transmission buffer corresponding to the thinned data to the data which does not allow the deterioration. It is.

In the radio communication apparatus according to the present invention, the state of the radio channel determined from the radio channel quality determination pattern transmitted from the receiving side and the data transmitted from the transmitting side to the receiving side are data that allows degradation. Depending on whether there is data or data that does not allow deterioration, if the data allows deterioration, the data is discarded on the transmitting side based on predetermined conditions, and only data that does not allow deterioration is stored in the transmission buffer. Things.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. Embodiment 1 FIG. FIG. 1 is a block diagram showing the configuration of the wireless communication apparatus according to the first embodiment. The transmitting side inserts and transmits a judgment pattern, the receiving side receives the judgment pattern, and performs radio communication based on the judgment pattern. The line quality is determined, the result of the determination is returned from the receiving side to the transmitting side, and the transmission side controls data transmission based on the result.

In FIG. 1, 1 is a transmission buffer unit (buffering control means), 3a is a buffer memory, 4 is a transmission buffer control circuit (transmission control means, buffering control means) for controlling input / output of transmission data to / from the buffer memory 3a. Control means), 6 a judgment pattern adding unit (transmission control means) for inserting a radio channel quality judgment pattern into transmission data and transmitting the radio channel quality judgment pattern from the transmission data transmission side to the reception side; Side antenna. 2 is a reception buffer unit, 3b is a buffer memory, 5 is a reception buffer control circuit, 7 is a judgment unit (transmission control means) that judges the radio channel quality from the radio channel quality judgment pattern inserted in the received signal, 8 Is a determination result notifying unit (transmission control means) for returning the determination result to the opposite transmitting side,
ANT2 is an antenna on the receiving side. 9 and 10 are transmission / reception units.

Next, the operation will be described. This wireless communication device includes a buffer memory 3a and a buffer memory 3a.
A transmission buffer in which transmission data is buffered in a transmission buffer unit 1 including a transmission buffer control circuit 4 for controlling input / output of transmission data to / from a transmission side, and a judgment pattern adding unit 6 inserts a radio channel quality judgment pattern. The determination unit 7 determines the wireless channel quality from the transmission processing and the wireless channel quality determination pattern inserted in the signal received from the wireless channel, and the determination result notifying unit 8 returns the determination result to the opposite transmitting side. , The reception buffer control circuit 5 controls the buffer memory 3b.
Wireless data communication is performed by a data receiving process on the receiving side that controls input / output of received data to / from the wireless communication device.

First, in the transmission buffer unit 1, the transmission buffer control circuit 4 recognizes the judgment pattern addition timing information from the judgment pattern addition unit 6 and reads data from the buffer memory 3a. The timing information refers to the timing of starting the addition of the determination pattern. However, the determination pattern may be variable, and in a configuration that allows use of a plurality of types of pattern lengths, information such as the length of the additional pattern is also included.

Next, a judgment pattern is added by the judgment pattern adding section 6. Information to be agreed in advance with the opposite receiving side receiving the determination pattern includes the content of the pattern, the pattern length, the addition position, the addition interval, and the like.

On the receiving side, the judgment pattern is received, and the judgment unit 7 judges the radio channel quality. If the sender and receiver do not agree on the additional location information of the pattern,
It also has a function to search for patterns.

The reception buffer control circuit 5 controls the writing to the buffer memory 3b based on the radio channel quality judgment result by the judgment unit 7 on the reception side, and the judgment result notification unit 8 sends the radio line quality judgment result to the transmission side. Send it back.

The transmitting side receives the radio channel quality judgment result from the opposite receiving side, and if the judgment result is good, reads out the data from the buffer memory 3a and sends it out. When the result of the determination is not good, the reading of data from the buffer memory 3a is stopped and the transmission buffer unit waits.

The transmitting side transmits only the determination pattern without transmitting user data while the line condition is not good. When the wireless channel quality determination result returned from the receiving side becomes good, data reading from the transmission buffer unit 1 is restarted, and normal data transmission processing is performed.

FIG. 3 is a sequence diagram showing a communication processing operation between the transmitting side and the receiving side in such a wireless communication device.

The transmission of the determination pattern may be performed from the receiving side. In this case, the determination result notifying section 8 is not required, and the receiving side has the determining pattern adding section 6 and the transmitting side has the determining section 7. Become. FIG. 2 is a block diagram illustrating an example of a wireless communication device when such a determination pattern is transmitted from the receiving side. 2, the same or corresponding parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In such a configuration, the transmission procedure of the radio channel quality determination pattern from the reception side to the transmission side can simplify the radio channel monitoring procedure, enhance the processing capacity of user data, and improve the data according to the good and bad line conditions. It is possible to determine whether or not to execute the transmission process, and to improve the communication quality by preventing the data transmission process from being performed when the line condition is poor.

Also, a configuration is considered in which the interval at which the judgment pattern is added is variable on the transmission side or the reception side, and the pattern transmission interval is extended, for example, when the state of good wireless channel quality continues for a relatively long time. Can be

In the above configuration, the transmitting side and the receiving side have their own processing. However, since the wireless communication apparatus has both the transmitting section and the receiving section, the data communication direction is bidirectional. It is possible.

As described above, according to the first embodiment, data transmission / reception is performed when the radio channel quality is good, so that useless data transmission processing can be suppressed and communication quality with few data errors can be suppressed. There is an effect that a wireless communication device capable of realizing high data communication can be obtained. In addition, it is possible to determine whether the state of the communication line is good or bad based on a determination pattern transmitted from the reception side to the transmission side, and to transmit and receive data based on the determination result, thereby simplifying the monitoring procedure. Accordingly, there is an effect that a wireless communication device capable of increasing the processing capability of user data can be obtained. When the result of the wireless channel quality determination returned from the receiving side becomes good, data reading from the transmission buffer unit 1 is restarted, and normal data transmission processing is continuously performed until the next wireless channel quality determination timing. When the quality of the line is good, the interval at which the radio line quality is determined can be lengthened, so that there is an effect that a wireless communication device that can use the transmission buffer efficiently can be obtained.

Embodiment 2 FIG. 4 shows the second embodiment.
FIG. 4 is an explanatory diagram showing a processing operation related to a buffer memory in the wireless communication device of the first embodiment. The configuration of this wireless communication device is the same as that of the wireless communication device shown in FIG.

In this wireless communication apparatus, the handling of data in the transmission buffer section is changed depending on the difference in service provided for user data. For example, when it is predicted that congestion of the buffer memory 3a on the transmission side is predicted and that there is no room in the bandwidth of the communication line, low-quality data that is input to the transmission side and to which some degradation is allowed is transmitted. By thinning out the data before storing it in the buffer memory 3a, a memory area for discarding low-quality data can be allocated to high-quality data.

It is also conceivable to discard all the best-effort data and the like without storing them in the buffer memory 3a on the transmission side and to allocate a memory area to high quality data.

The processing of thinning or discarding the low-quality data is not applied, for example, when the radio channel quality is good, but is applied for data buffering when the radio channel quality is not good. Depending on the quality of the wireless line, it may be used and switched.

As described above, according to the second embodiment, the service provided to the user data is provided in accordance with the prediction result of the congestion state in the buffer memory 3a on the transmitting side and the quality of the communication line. Due to the difference, the handling of data in the transmission buffer unit can be controlled, and low-quality data is thinned out during buffering in the buffer memory 3a on the transmission side, so that a memory area for discarding low-quality data can be allocated to high-quality data. , Best-effort data, etc., on the transmission side buffer memory 3a.
By discarding all the data without storing the data and allocating the memory area to the high-quality data, there is an effect that a wireless communication device that can use the transmission buffer efficiently can be obtained.

[0041]

As described above, according to the present invention, one station transmits a radio channel quality determination pattern to the other station, and the other station transmits the received radio channel quality determination pattern. The state of the wireless line is determined based on the determination result, the determination result is returned to the one station side, and the one station side transmits data to the other station side according to the returned determination result. Is configured to include transmission control means for controlling the data transmission process, it is possible to determine whether or not the data transmission process can be performed depending on whether the line status is good or bad. The data transmission process is performed when the line status is poor. There is an effect that the communication quality can be improved by eliminating the error.

According to the present invention, the state of the wireless channel is determined based on the received wireless channel quality determination pattern, and the determination result is returned to the side that sent the wireless channel quality determination pattern. The side that has transmitted the quality determination pattern is configured to control the transmission and reception of data to and from the transmission buffer unit in accordance with the returned determination result, so that communication is performed in a good line condition. Do
It is possible to prevent communication in a bad state, thereby suppressing useless data transmission processing, reducing data errors, and improving communication quality.

According to the present invention, data is transmitted to one station only when it is determined that the state of the radio line is good based on the result of determination returned from the other station. With this configuration, it is possible to suppress unnecessary data transmission processing by performing communication in a good line condition, reduce data errors, and improve communication quality.

According to the present invention, one station extends the transmission interval of the radio channel determination pattern in accordance with the result of the determination of the status of the radio channel returned from the other station, and sends the radio signal to the other station. Since the configuration is such that the information about the transmission interval of the wireless channel determination pattern is notified, when the state of the wireless channel is good, the effect of extending the transmission interval of the wireless channel determination pattern and increasing the processing capability of user data is obtained. is there.

According to the present invention, depending on whether the data to be transmitted to the radio line is the data which permits the deterioration or the data which does not permit the deterioration, the thinning of the data which permits the deterioration is performed. Is assigned to data that does not allow the degradation, so that the transmission buffer can be used efficiently.

According to the present invention, depending on whether the data to be transmitted to the radio line is the data which permits the deterioration or the data which does not permit the deterioration, if the data permits the deterioration, the predetermined condition is satisfied. Since the configuration is such that only data that does not allow degradation is stored in the transmission buffer, for example, if the predetermined condition is set when congestion in the transmission buffer is expected, the situation where the congestion is expected There is an effect that the transmission buffer can be used flexibly and efficiently according to the communication status and the service provided to the user, such as allocating a memory area for discarding low quality data to high quality data.

According to the present invention, the radio channel quality determination pattern is transmitted from the other station on the receiving side to the one station on the transmitting side, and based on the radio channel quality determination pattern received by the transmitting side. Since the transmitting side determines the state of the wireless line and controls transmission of data from the transmitting side to the receiving side according to the determination result, the wireless line is transmitted from the receiving side to the transmitting side. What is necessary is just to transmit the quality judgment pattern, the monitoring procedure of the radio line can be simplified, the processing capability of the user data is improved, and the line status is good, and it is possible to determine whether or not to execute the data transmission process according to the defect, There is an effect that communication quality is improved by preventing data transmission processing from being performed when the line condition is poor.

According to the present invention, a determination pattern adding unit for transmitting a wireless channel quality determination pattern from the receiving side to the transmitting side, and determining the state of the wireless channel by receiving the wireless channel quality determining pattern at the transmitting side. A determination unit, and a transmission buffer control circuit that controls input and output of data to and from the transmission buffer unit according to a determination result by the determination unit and controls transmission of data from the transmission side to the reception side on the transmission side. The receiving side inserts the wireless channel quality determination pattern into the transmission data by the determination pattern adding unit on the receiving side, and transmits the wireless channel quality determining pattern from the receiving side to the transmitting side. The procedure can be simplified, the processing capacity of user data can be increased, and it is possible to determine whether or not to execute data transmission processing according to good or bad line conditions,
There is an effect that communication quality is improved by preventing data transmission processing from being performed when the line condition is poor.

According to the present invention, the transmission side transmits data to the reception side only when the transmission side determines that the state of the radio line is good based on the radio line quality judgment pattern transmitted from the reception side. Since it was configured to send,
In addition to simplifying the monitoring procedure of the wireless channel, it is possible to suppress unnecessary data transmission processing by performing communication in a good channel condition, thereby reducing data errors and improving communication quality.

According to the present invention, the transmitting side instructs the receiving side to extend the transmission interval of the wireless line determining pattern in accordance with the state of the wireless line determined from the wireless line quality determining pattern sent from the receiving side. Since the receiving side is configured to extend the transmission interval of the radio channel quality determination pattern in accordance with the instruction for extending the transmission interval, the procedure for monitoring the radio channel can be simplified, and the state of the radio channel can be reduced. When it is good, there is an effect that the transmission interval of the wireless channel determination pattern is extended to increase the processing capability of user data.

According to the present invention, when it is determined that the state of the wireless channel determined from the wireless channel quality determination pattern transmitted from the receiving side is not good, deterioration transmitted from the transmitting side to the receiving side is allowed. Since the data is thinned on the transmitting side and a transmission buffer corresponding to the thinned data is allocated to data that does not allow deterioration, the transmission buffer can be used efficiently.

According to the present invention, when it is determined that the state of the wireless channel determined from the wireless channel quality determination pattern transmitted from the receiving side is not good, the data transmitted from the transmitting side to the receiving side is degraded. If the data is acceptable, it is discarded on the transmission side based on a predetermined condition, and only data that does not allow deterioration is stored in the transmission buffer. If set when expected, flexible and efficient according to communication conditions and services provided to the user, such as allocating a memory area for low-quality data discard to high-quality data under the situation where the congestion is expected. This has the effect of enabling the use of a simple transmission buffer.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a wireless communication device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a wireless communication apparatus when transmitting a determination pattern from a receiving side according to Embodiment 1 of the present invention.

FIG. 3 is a sequence diagram showing a communication processing operation between a transmitting side and a receiving side in the wireless communication device according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a processing operation related to a buffer memory in a wireless communication device according to a second embodiment of the present invention.

FIG. 5 is a block diagram illustrating a configuration of a conventional wireless communication device.

FIG. 6 is a conceptual diagram of a control signal and a data signal communicated between a calling station and a called station in a conventional wireless communication device.

[Explanation of symbols]

1 transmission buffer unit (buffering control means), 2
Reception buffer unit, 4 transmission buffer control circuit (transmission control unit, buffering control unit), 6 judgment pattern addition unit (transmission control unit), 7 judgment unit (transmission control unit), 8
A determination result notification unit (transmission control means);

Claims (12)

[Claims] 1. A wireless communication apparatus for transmitting and receiving data between stations via a wireless line, comprising: transmitting a wireless channel quality determination pattern from one station to the other station; The state of the wireless line is determined based on a wireless line quality determination pattern, the determination result is returned to the one station side, and the one station side responds to the other station according to the returned determination result. A wireless communication device comprising transmission control means for controlling transmission of data to the side. 2. A transmission control unit comprising: a transmission buffer unit for buffering data to be transmitted to a radio line; and a reception buffer unit for buffering data received from the radio line. A determination pattern adding unit for transmitting a wireless channel quality determination pattern, a determination unit for determining the state of the wireless channel based on the received wireless channel quality determination pattern, and determining the determination result determined by the determination unit A determination result notifying unit that returns the wireless channel quality determination pattern to the inserted side, and controls transmission and reception of data to and from the transmission buffer unit according to the determination result returned by the determination result notifying unit. The wireless communication device according to claim 1, further comprising: a transmission buffer control circuit. 3. The transmission control means transmits data to one station only when it is determined that the state of the wireless line is good based on the determination result returned from the other station. The wireless communication device according to claim 1 or 2, wherein: 4. One of the stations extends the transmission interval of the radio channel determination pattern in accordance with the returned radio channel state determination result, and sends the other station the transmission interval of the radio channel determination pattern. The wireless communication device according to claim 1, wherein information is notified. 5. A method according to claim 1, wherein the data to be transmitted to the radio line is data which permits deterioration or data which does not permit deterioration.
5. The wireless communication apparatus according to claim 2, further comprising buffering control means for allocating a transmission buffer corresponding to the thinned-out portion to data that does not allow the deterioration. 6. Depending on whether data to be transmitted to a wireless line is data that permits deterioration or data that does not permit deterioration, if the data allows deterioration, the data is discarded based on a predetermined condition. 5. The wireless communication apparatus according to claim 2, further comprising a buffering control unit that stores only data that does not allow deterioration in a transmission buffer. 7. A wireless communication apparatus for transmitting and receiving data between stations via a wireless line, comprising: transmitting a wireless line quality determination pattern from the other station on the receiving side to one station on the transmitting side; The transmitting side determines the state of the wireless line on the transmitting side based on the wireless line quality determining pattern received by the transmitting side, and controls transmission of data from the transmitting side to the receiving side according to the determination result. A wireless communication device comprising control means. 8. A transmission buffer unit for buffering data to be transmitted to a radio line, and a reception buffer unit for buffering data received from the radio line, wherein the transmission control means transmits a radio line quality determination pattern to the reception side. A determination pattern adding unit for sending from the transmission side to the transmission side, a determination unit for receiving the wireless channel quality determination pattern on the transmission side and determining the state of the wireless line, and the transmission buffer unit according to a determination result by the determination unit And a transmission buffer control circuit for controlling input / output of data to / from the transmission side and controlling transmission of data from the transmission side to the reception side on the transmission side. apparatus. 9. The transmission control means transmits data to the reception side only when the transmission side determines that the state of the radio line is good based on the radio line quality judgment pattern sent from the reception side. The wireless communication device according to claim 7 or 8, wherein 10. The transmitting side instructs the receiving side to extend the transmission interval of the wireless line determining pattern in accordance with the state of the wireless line determined from the wireless line quality determining pattern sent from the receiving side. Extending the transmission interval of the radio channel quality determination pattern in accordance with an instruction for extending the transmission interval.
The wireless communication device according to claim 1. 11. The data transmitted from the transmission side to the reception side when the transmission side determines that the state of the radio line is not good based on the radio line quality determination pattern transmitted from the reception side, A buffer that allocates a transmission buffer corresponding to the thinned data to the data that does not allow the deterioration, according to whether the data is an allowable data or a data that does not allow the deterioration. The wireless communication device according to any one of claims 7 to 10, further comprising a ring control unit. 12. The data transmitted from the transmission side to the reception side when the transmission side determines that the state of the radio line is not good based on the radio line quality determination pattern sent from the reception side, Depending on whether the data is permissible or data that does not permit deterioration, if the data permits deterioration, the transmitting side discards the data based on predetermined conditions, and stores only data that does not permit deterioration in the transmission buffer. The wireless communication device according to claim 7, further comprising a buffering control unit that performs buffering.