JP2016025560A - Data generation device and data processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow for enhancement of communication efficiency in a wireless communication device without impairing communication reliability, in a data generation device generating coded data transmitted by the wireless communication device.SOLUTION: In a wireless communication system 1, wireless part parameter measurement sections 23a, 33a acquire recognition data for recognizing the frame length when wireless communication units 12, 31a perform data transmission. Coding/block length parameter determination units 24a, 34a acquire the amount of data transmitted using the wireless communication units 12, 31a. The coding/block length parameter determination units 24a, 34a set the coded parameters representing the parameters when performing the coding depending on the frame length and the amount of transmission data, and erasure correction coding units 25, 35a and sub-block division units 26, 36a perform coding of the transmission data according to the coded parameters.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a data generation device that generates encoded data to be transmitted by a wireless communication device, and a data processing device that decodes the encoded data.

  A device that performs error correction coding such as erasure correction coding is known as the above data generation device (see, for example, Patent Document 1).

JP 2008-124613 A

  However, in the data generation apparatus, a method for generating a packet is not described in detail, and it is estimated that a packet having the same data amount is always generated and a frame including each packet is further generated. In such a configuration, when data vacancies occur in a frame, a frame in which the vacancies are filled with dummy data is generated. Therefore, in the wireless communication device, the communication efficiency is lowered by the amount of dummy data filling. There was a point. Further, since there is no mechanism for adjusting the data amount, there has been a problem that communication efficiency is lowered due to generation and transmission of redundant data exceeding the originally required data amount.

  Accordingly, in view of such a problem, in a data generation device that generates encoded data to be transmitted by a wireless communication device, communication reliability in the wireless communication device can be improved without impairing communication reliability. This is an object of the present invention.

  In the data generation device of the present invention, the frame length acquisition means acquires recognition data for recognizing the frame length when the wireless communication device transmits data. The data amount acquisition means acquires the data amount of transmission data to be transmitted using the wireless communication device. The encoding parameter setting means sets an encoding parameter representing a parameter for encoding according to the frame length and the data amount of the transmission data, and the encoding means encodes the transmission data according to the encoding parameter. To do.

  According to such a data generation device, since the setting of parameters when performing encoding is changed according to the frame length and the data amount of transmission data, the frame length and transmission data of the wireless communication device transmit data. Encoded data suitable for the amount of data can be obtained. Therefore, it is possible to improve communication efficiency when transmitting encoded data in the wireless communication apparatus.

  In addition, description of each claim can be arbitrarily combined as much as possible. At this time, a part of the configuration may be excluded.

1 is a block diagram illustrating a schematic configuration of a wireless communication system 1 according to a first embodiment. It is explanatory drawing which shows an example of a flame | frame. It is a conceptual diagram which shows the process by an erasure | elimination correction encoding part. It is a conceptual diagram which shows the process by a subblock division part. It is a conceptual diagram which shows the process by an intermittent transmission part. It is a conceptual diagram which shows the process by a radio | wireless communication part. It is explanatory drawing which shows the example in which several packets are contained in 1 frame. It is explanatory drawing which shows that dummy data is inserted in the empty part of a flame | frame. It is a block diagram which shows schematic structure of the radio | wireless communications system 2 of 2nd Embodiment. It is a block diagram which shows schematic structure of the radio | wireless communications system 3 of 3rd Embodiment. It is a flowchart which shows the parameter calculation process which the radio | wireless part parameter measurement part 33c of 3rd Embodiment performs. It is a block diagram which shows schematic structure of the radio | wireless communications system 4 of 4th Embodiment. It is a flowchart which shows the parameter calculation process which radio | wireless part parameter measurement part 33dc of 4th Embodiment performs. It is a block diagram which shows schematic structure of the radio | wireless communications system 5 of 5th Embodiment.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
[Configuration of this embodiment]
The wireless communication system 1 to which the present invention is applied is set to perform communication using, for example, LTE (Long Term Evolution). In particular, the cloud server 20a and the terminal device 30a that perform wireless communication set parameters for encoding according to the frame length and the data amount of transmission data, and set the frame length (single transmission) It has a function to make the encoded data suitable for the length (N byte) of a frame (Tranport Block: see FIG. 2) representing the amount of data to be sent in the process and the amount of transmission data.

  Specifically, as shown in FIG. 1, the radio communication system 1 includes a radio base station 10, a cloud server 20a, and a terminal device 30a. The wireless base station 10 and the cloud server 20a are communicably connected via a wired network 15, and the wireless base station 10 and the terminal device 30a can communicate with each other by performing wireless communication.

  In the description of the present embodiment, an example will be described in which the wireless base station 10, the cloud server 20a, and the terminal device 30a perform each process described later using hardware such as a control circuit. It may be realized as processing by a computer.

  The wireless base station 10 includes a wired communication unit 11 and a wireless communication unit 12. The wired communication unit 11 relays the frame received via the wireless communication unit 12 to the cloud server 20 a and relays the frame received from the cloud server 20 a to the wireless communication unit 12.

  The wireless communication unit 12 includes a communication module for communicating with one or a plurality of terminal devices 30a. The wireless communication unit 12 sends a frame received from the wired communication unit 11 to the terminal device 30a and transmits a frame received from the terminal device 30a to the wired device. Send to the communication unit 11. At this time, the wireless communication unit 12 sets the frame length with a preset algorithm based on the radio wave condition (radio wave intensity) and the bandwidth of the radio wave used, and transmits data according to this setting. .

  The cloud server 20a manages transmission information and reception information transmitted / received to / from the terminal device 30a. The cloud server 20a includes a sub-block combining / decoding unit 22, a radio unit parameter measurement unit 23a, an encoding / block length parameter determination unit 24a, an erasure correction encoding unit 25, a sub-block division unit 26, and an intermittent transmission unit 27. ing.

  The sub-block combining / decoding unit 22 acquires data received by the radio base station 10 from the terminal device 30a, and performs decoding. Also, the radio unit parameter measurement unit 23a acquires from the radio communication unit 12 radio unit parameters (recognition data) for recognizing the frame length when the radio communication unit 12 of the radio base station 10 performs radio communication. The frame length is recognized by inputting a partial parameter to a function or the like prepared in advance. Here, the radio section parameter may be data that directly represents the frame length, or data for estimating the frame length.

  More specifically, the radio unit parameters include data indicating a radio band (bandwidth) to be used, a modulation and coding scheme, and a transmission frame size (for example, MCS: Modulation and Coding Scheme, TBS: Transport Block Size, RB: Resource). Block, etc.), data indicating radio field strength (for example, CQI: Channel Quality Indicator, SNR: Signal to Noise Ratio, SINR: Signal to Interference and Noise Power Ratio, RSRP: Reference Signal Received Power, RSSI: Received Signal Strength Indicator, RSRQ: Reference Signal Received. Quality, etc.).

  The encoding / block length parameter determination unit 24a sets encoding parameters used when encoding according to a logic (for example, a function) prepared in advance. At this time, transmission information including the data amount of the data to be transmitted is acquired, and the encoding parameter is set based on the data amount of the data to be transmitted and the estimated frame length. Examples of the coding parameter include a code length, a coding rate, and a packet length that satisfy the target reception error rate and minimize the degradation of transmission efficiency.

  The erasure correction encoding unit 25 performs encoding using the encoding parameter set by the encoding / block length parameter determination unit 24a. At this time, as shown in FIG. 3, an error correction parity (erasure correction code) is generated based on the encoding parameter, and the error correction parity is added to the transmission information representing the data to be transmitted by the cloud server 20a. Generated data.

  The sub-block dividing unit 26 divides the data generated by the erasure correction encoding unit 25 by the data amount determined by the encoding parameter. In this process, as shown in FIG. 4, for example, EB (encorded sub block) is generated by dividing data for each Lbyte.

The intermittent transmission unit 27 generates a packet and intermittently transmits the packet to the wireless communication unit 12. Specifically, as shown in FIG. 5, data including IP (Internet Protocol), UDP (User Datagram Protocol), and EB is assumed to be one packet. Then, the generated packets are transmitted to the wireless communication unit 12 with an interval (T _it ) between the packets. Here, the interval is set in units of packets in order to prevent different packets from being combined into one frame.

  As illustrated in FIG. 6, the wireless communication unit 12 adds data such as dummy data to each packet transmitted from the intermittent transmission unit 37 to generate a frame (Tranport Block) including the packet. Here, as shown in FIG. 7, when the wireless communication unit 12 can generate one frame using a plurality of packets (FIG. 7A), these packets and CRC (Cyclic Redundancy Check), etc. Are transmitted in one frame (FIG. 7B).

  In this case, if an error occurs during data transmission / reception, a plurality of packets are lost at the same time, exceeding the amount of data that can be corrected by the erasure correction code and increasing the probability of being unable to be restored, thereby impairing communication reliability. . If the packet is smaller than the frame size set by the wireless communication unit 12, dummy data (padding) is embedded in an empty part of the frame as shown in FIG. As described above, when dummy data increases, communication efficiency deteriorates.

  However, in the configuration of the present embodiment, only one packet is included in one frame, and the packet size is set so that the dummy data is reduced at this time, so that the reliability of communication is impaired. Therefore, communication efficiency can be improved.

  Next, the terminal device 30a is configured as a terminal device such as a smart phone that is carried by the user and moves. As shown in FIG. 1, the terminal device 30a includes a radio communication unit 31a, a sub-block combining / decoding unit 32, a radio unit parameter measuring unit 33a, an encoding / block length parameter determining unit 34a, and an erasure correction coding. A unit 35a, a sub-block dividing unit 36a, and an intermittent transmission unit 37. Although the terminal device 30a is largely different from the cloud server 20a in that the terminal device 30a includes the wireless communication unit 31a, other configurations are generally the same as those of the cloud server 20a.

  The wireless communication unit 31 a transmits and receives data to and from the wireless base station 10. Also, the data received from the radio base station 10 is sent to the sub-block combining / decoding unit 32, a frame based on the data sent from the intermittent transmission unit 37 is generated and transmitted to the radio base station 10. In addition, it has the same function as the wireless communication unit 12 of the wireless base station 10.

  The sub-block combining / decoding unit 32 acquires data received by the wireless communication unit 31a and performs decoding. The wireless unit parameter measuring unit 33a acquires the wireless unit parameter for recognizing the frame length when the wireless communication unit 31a performs wireless communication from the wireless communication unit 31a.

  For the encoding / block length parameter determination unit 34a, the erasure correction encoding unit 35a, the sub-block division unit 36a, and the intermittent transmission unit 37, the encoding / block length parameter determination unit 24a, the erasure correction encoding unit 25, and the sub-block It is configured in the same manner as the dividing unit 26 and the intermittent transmitting unit 27.

[Effects of First Embodiment]
In the wireless communication system 1 of the present invention, the wireless unit parameter measuring units 23a and 33a acquire recognition data for recognizing the frame length when the wireless communication units 12 and 31a transmit data. Also, the encoding / block length parameter determination units 24a and 34a acquire the data amount of transmission data to be transmitted using the wireless communication units 12 and 31a. Then, the encoding / block length parameter determination units 24a and 34a set encoding parameters representing parameters for encoding according to the frame length and the data amount of transmission data, and the erasure correction encoding units 25 and 35a. The sub-block dividing units 26 and 36a encode transmission data according to the encoding parameter.

  According to the wireless communication system 1 as described above, since the setting of parameters when encoding is changed according to the frame length and the data amount of transmission data, the frame length when the wireless communication units 12 and 31a transmit data is changed. And it can be set as the encoding data suitable for the data amount of transmission data. Therefore, it is possible to improve the communication efficiency when transmitting the encoded data in the wireless communication units 12 and 31a.

  In the wireless communication system 1, the encoding / block length parameter determination units 24a and 34a set the data amount per packet when the transmission data is divided as the encoding parameter.

  According to such a wireless communication system 1, since the data amount per packet when the transmission data is divided is set, the data amount per packet can be optimized according to the recognition data.

  In the wireless communication system 1, the encoding / block length parameter determination units 24a and 34a also set the data amount of error correction parity for correcting an error in transmission data as an encoding parameter, and perform erasure correction encoding. The units 25 and 35a and the sub-block division units 26 and 36a divide the data obtained by adding the error correction parity to the transmission data for each data amount per packet to generate encoded data.

  According to such a wireless communication system 1, since the data amount of error correction parity is set and the data is divided in consideration of this data amount, the communication efficiency can be improved without impairing the communication reliability. .

  In the wireless communication system 1, the intermittent transmission units 27 and 37 transmit the encoded data generated by dividing according to the encoding parameter to the wireless communication units 12 and 31 a at intervals.

  According to such a wireless communication system 1, since transmission is performed at intervals for each encoded data, it is possible to prevent a plurality of encoded data from being integrated into one frame in the wireless communication units 12 and 31a. it can. Therefore, it is possible to reduce the probability that a plurality of pieces of encoded data disappear simultaneously.

  The cloud server 20 a of the wireless communication system 1 is configured separately from the wireless communication unit 12, and the wireless unit parameter measurement unit 23 a acquires recognition data from the wireless communication unit 12.

According to such a wireless communication system 1, even if the wireless communication system 1 is separated from the wireless communication unit 12, encoding of transmission data can be performed satisfactorily.
[Second Embodiment]
[Configuration of Second Embodiment]
Next, another form of wireless communication system 2 will be described. In the present embodiment (second embodiment), only the portions different from the wireless communication system 1 of the first embodiment will be described in detail, and the same portions as those of the wireless communication system 1 of the first embodiment are denoted by the same reference numerals. Therefore, the description is omitted.

  In the wireless communication system 2 of the present embodiment, assuming that the cloud server 20b cannot acquire the wireless unit parameters from the wireless communication unit 12 of the wireless base station 10, the terminal device 30b is connected to the wireless communication unit 12 of the wireless base station 10. It has a function of feeding back the set wireless unit parameters to the cloud server 20b. Specifically, as shown in FIG. 9, in the radio communication system 2, the radio unit parameter measurement unit 33b of the terminal device 30b performs transmission parameters included in the data from the radio base station 10 acquired by the radio communication unit 31b. And the radio | wireless part 31b acquires the radio | wireless part parameter utilized in the case of transmission of data.

  The transmission parameters included in the data from the radio base station 10 are sent to the erasure correction coding unit 35b. Further, as described above, the wireless unit parameter used when the wireless communication unit 31b transmits data is sent to the encoding / block length parameter determining unit 34b.

  Here, the transmission parameter indicates a parameter indicating a setting when the transmission side apparatus encodes data or a parameter for estimating the setting at this time. For example, the transmission parameter may be data for estimating the frame length described above.

  The encoding / block length parameter determination unit 34b sets the encoding parameter in consideration of the transmission parameter (data amount) transmitted from the terminal device 30b. Then, the erasure correction encoding unit 35b and the sub-block division unit 36b perform encoding and packetization on data including transmission parameters.

  The wireless communication unit 31b sends data including transmission parameters to the cloud server 20b via the wireless base station 10. In the cloud server 20b, the encoding / block length parameter determination unit 24b sets the encoding parameter using the radio unit parameter of the radio base station 10 fed back from the terminal device 30b.

[Effects of Second Embodiment]
In the wireless communication system 2, the encoding / block length parameter determination units 24b and 34b set the encoding parameters in consideration of the data amount of the recognition data, and the erasure correction encoding units 25 and 35b and the sub-block division unit 26 , 36b encode data including recognition data and transmission data according to the encoding parameter.

  According to such a wireless communication system 2, since the recognition data can be transmitted to the communication partner of the wireless communication units 12 and 31b, the encoding parameter is set when the communication partner returns the data to the wireless communication units 12 and 31b. It can be used when setting.

[Third Embodiment]
Next, the wireless communication system 3 according to the third embodiment will be described.
In the wireless communication system 3 according to the third embodiment, the terminal device 30c is configured to estimate the frame length using information on a modulation and coding scheme and bandwidth, which are settings in wireless communication. Specifically, as shown in FIG. 10, the radio unit parameter measurement unit 33 c includes a radio communication parameter database (DB) 41 and a radio communication parameter calculation unit 42.

The wireless communication parameter database 41 stores a map that can uniquely specify the frame length when the modulation and coding scheme and the bandwidth are specified.
The wireless communication parameter calculation unit 42 calculates the frame length by executing the parameter calculation process shown in FIG. That is, as shown in FIG. 11, the frame used when the wireless communication unit 31c transmits data by acquiring the modulation and coding scheme and the bandwidth from the wireless communication unit 31c (S110) and referring to the wireless communication parameter database 41. The length is specified (S120).

  According to such a wireless communication system 3, since the frame length is estimated from the bandwidth and the modulation and coding scheme, the frame length can be estimated even when the frame length information cannot be obtained directly.

[Fourth Embodiment]
[Configuration of Fourth Embodiment]
Next, the wireless communication system 4 according to the fourth embodiment will be described. In the wireless communication system 4 of the fourth embodiment, the S / N ratio (signal-noise ratio) when the wireless unit parameter measurement unit 33d transmits and receives data is acquired, and the encoding / block length parameter determination units 24a and 34a are acquired. Estimates the frame length from the S / N ratio.

  Specifically, as shown in FIG. 12, the radio unit parameter measurement unit 33d includes a terminal moving speed detection unit 51, averaging units 52 and 53, a radio communication parameter database 54, and a radio communication parameter calculation unit 55. I have.

  The terminal moving speed detection unit 51 acquires the position information of the terminal device 30d according to the time series, and calculates the moving speed of the terminal device 30d from the difference between these position information. Averaging units 52 and 53 respectively receive noise power or channel state information (data signal received power) from radio communication unit 31d, and average and output these. At this time, the averaging units 52 and 53 change the condition for averaging according to the moving speed of the terminal device 30d. For example, the average is obtained from more inputs as the moving speed increases.

The wireless communication parameter database 54 stores a map that can uniquely identify the frame length when noise power and channel state information are identified.
The wireless communication parameter calculation unit 55 calculates the frame length by executing the parameter calculation process shown in FIG. That is, as shown in FIG. 13, channel state information and noise power (that is, S / N ratio) are acquired (S210), and the terminal moving speed is calculated using the function of the terminal moving speed detecting unit 51 (S220). Then, the functions of the averaging units 52 and 53 are used to average the input with settings corresponding to the terminal moving speed (S230), and the wireless communication parameter database 41 is referred to for the averaged channel state information and noise power. Thus, the frame length when the wireless communication unit 31d transmits data is specified (S240).

According to such a wireless communication system 1, since the frame length is estimated from the S / N ratio, the frame length can be estimated even when the frame length cannot be directly acquired.
In the fourth embodiment, the channel state information and the noise power are acquired in order to obtain the S / N ratio as the intensity data representing one or a plurality of radio wave intensities referred to in the present invention. The data need not include noise power, for example, and may be data indicating one or more radio wave intensities (data not including noise power).

[Fifth Embodiment]
[Configuration of Fifth Embodiment]
Next, the wireless communication system 5 according to the fifth embodiment will be described.

  The wireless communication system 5 according to the fifth embodiment has a function of estimating an encoding parameter used by a transmission-side apparatus using a parameter included in received data. Specifically, as shown in FIG. 14, in the wireless communication system 5, the sub-block combining / decoding unit 32 of the terminal device 30e includes a wireless unit parameter detection unit 61, an erasure correction code / packet length parameter database 62, a coding rate estimation. Unit 63, code length estimation unit 64, sub-block combination unit 65, and decoding unit 66.

  The wireless unit parameter detection unit 61 detects the frame length from the wireless communication unit 31e. The erasure correction code / packet length parameter database 62 stores a correspondence map for specifying parameters such as the length of the erasure correction code (code length) and the coding rate when the frame length is specified. Has been.

  The coding rate estimation unit 63 estimates the coding rate of the received data by referring to the erasure correction code / packet length parameter database 62 using the frame length detected by the radio unit parameter detection unit 61. Also, the code length estimation unit 64 estimates the code length of the received data by referring to the erasure correction code / packet length parameter database 62 using the frame length detected by the radio unit parameter detection unit 61.

  Then, the sub-block combining unit 65 combines the sub-blocks (EB) divided according to the estimated code length, and the decoding unit 66 decodes the combined data using the estimated coding rate. Do.

According to such a wireless communication system 5, it is possible to improve communication efficiency when transmitting encoded data in the wireless communication units 12 and 31e.
[Other Embodiments]
The present invention is not construed as being limited by the above embodiment. Further, the reference numerals used in the description of the above embodiments are also used in the claims as appropriate, but they are used for the purpose of facilitating the understanding of the invention according to each claim, and the invention according to each claim. It is not intended to limit the technical scope of The functions of one component in the above embodiment may be distributed as a plurality of components, or the functions of a plurality of components may be integrated into one component. Further, at least a part of the configuration of the above embodiment may be replaced with a known configuration having the same function. Moreover, you may abbreviate | omit a part of structure of the said embodiment. In addition, at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of the other embodiment. In addition, all the aspects included in the technical idea specified only by the wording described in the claim are embodiment of this invention.

  In addition to the wireless communication systems 1 to 5 described above, each device such as the cloud servers 20a and 20b and the terminal devices 30a to 30e constituting the wireless communication systems 1 to 5 and the computer function as the wireless communication systems 1 to 5. The present invention can also be realized in various forms such as the above program, the medium on which the program is recorded, and the wireless communication method.

  For example, in the above-described embodiment, the configuration has been described in which the cloud servers 20a and 20b that communicate via the radio base station 10 and the terminal devices 30a to 30e that communicate with each other communicate with each other. The devices that communicate with each other may communicate with each other, or the devices that communicate with each other may communicate with each other.

Even if it does in this way, the effect similar to the said embodiment can be enjoyed.
[Correspondence between Configuration of Embodiment and Means of Present Invention]
The wireless communication units 12 and 31a to 31e in the above embodiment correspond to the wireless communication device referred to in the present invention, and the cloud servers 20a to 20e and the terminal devices 30a to 30e in the above embodiment correspond to the data generation device referred to in the present invention. . The radio unit parameter measurement unit 23a and the radio unit parameter measurement units 33a to 33e in the above embodiment correspond to frame length acquisition means in the present invention, and the encoding / block length parameter determination units 24a to 24e in the above embodiment. Reference numerals 34a to 34e correspond to data amount acquisition means in the present invention.

  Further, the encoding / block length parameter determination units 24a to 24e and 34a to 34e in the above embodiment correspond to the encoding parameter setting means in the present invention, and the erasure correction encoding units 25, 35a to 35e in the above embodiment. The sub-block division units 26 and 36a to 36e correspond to encoding means in the present invention. The intermittent transmission units 27 and 37 in the above embodiment correspond to encoded data transmission means in the present invention, and the terminal device 30e in the above embodiment corresponds to a data processing apparatus in the present invention.

  Furthermore, the radio unit parameter detection unit 61, the coding rate estimation unit 63, and the code length estimation unit 64 in the above embodiment correspond to the parameter estimation unit in the present invention. Corresponds to decoding means in the present invention.

  DESCRIPTION OF SYMBOLS 1-5 ... Wireless communication system, 10 ... Wireless base station, 11 ... Wired communication part, 12 ... Wireless communication part, 15 ... Wired network, 20a-20b ... Cloud server, 22 ... Sub-block coupling / decoding part, 23a ... Wireless Part parameter measurement unit, 24a to 24b ... coding / block length parameter determination unit, 25 ... erasure correction coding unit, 26 ... sub-block division unit, 27 ... intermittent transmission unit, 30a to 30e ... terminal device, 31a to 31e ... Wireless communication unit, 32... Sub-block combining / decoding unit, 33a to 33d, wireless unit parameter measurement unit, 34a to 34b, encoding / block length parameter determination unit, 35a to 35b, erasure correction encoding unit, 36a to 36b Sub-block dividing unit, 37 ... intermittent transmission unit, 41 ... wireless communication parameter database, 42 ... wireless communication parameter calculation unit, 51 ... end Movement speed detection unit 52, 53 ... averaging unit, 54 ... wireless communication parameter database, 55 ... wireless communication parameter calculation unit, 61 ... wireless unit parameter detection unit, 62 ... erasure correction code / packet length parameter database, 63 ... code Conversion rate estimation unit, 64... Code length estimation unit, 65... Subblock combination unit, 66.

Claims (9)

A data generation device (20a to 20e, 30a to 30e) that generates encoded data to be transmitted by a wireless communication device (12, 31a to 31e),
Frame length acquisition means (23a, 33a to 33e) for acquiring recognition data for recognizing the frame length when the wireless communication device transmits data;
Data amount acquisition means (24a to 24e, 34a to 34e) for acquiring a data amount of transmission data to be transmitted using the wireless communication device;
Encoding parameter setting means (24a-24e, 34a-34e) for setting an encoding parameter representing a parameter for encoding according to the frame length and the data amount of the transmission data;
Encoding means (25, 35a to 35e, 26, 36a to 36e) for encoding the transmission data according to the encoding parameter;
A data generation device comprising: The data generation device according to claim 1,
The encoding parameter setting means sets a data amount per packet when the transmission data is divided as the encoding parameter. The data generation device according to claim 2,
The coding parameter setting means also sets a data amount of error correction parity for correcting an error in the transmission data as the coding parameter,
The data generation apparatus according to claim 1, wherein the encoding means generates the encoded data by dividing data obtained by adding the error correction parity to the transmission data for each data amount per packet. In the data generation device according to any one of claims 1 to 3,
A data generation apparatus comprising encoded data transmission means (27, 37) for transmitting to the wireless communication apparatus at intervals for each piece of encoded data generated by dividing according to the encoding parameter. In the data generation device according to any one of claims 1 to 4,
The encoding parameter setting means sets the encoding parameter in consideration of the data amount of the recognition data,
The data generation apparatus characterized in that the encoding means encodes data including the recognition data and the transmission data in accordance with the encoding parameter. In the data generation device according to any one of claims 1 to 5,
The frame length acquisition means acquires, as the recognition data, a bandwidth and a modulation and coding scheme that can be used by a wireless communication device,
The encoding parameter setting means estimates the frame length from a bandwidth and a modulation encoding scheme. In the data generation device according to any one of claims 1 to 5,
The frame length acquisition means acquires, as the recognition data, one or a plurality of intensity data representing radio wave intensity when a wireless communication device transmits or receives data,
The encoding parameter setting means estimates the frame length from the intensity data. In the data generation device according to any one of claims 1 to 7,
The data generation device is configured separately from the wireless communication device,
The data generation device, wherein the frame length acquisition unit acquires recognition data from the wireless communication device. A data processing device (30e) for processing data received by a wireless communication device,
Parameter estimation means (61, 63, 64) for estimating an encoding parameter based on a frame length of the received data;
Decoding means (65, 66) for decoding data using the estimated encoding parameters;
With
The data processing device, wherein the wireless communication device receives a frame based on the encoded data generated by the data generation device according to any one of claims 1 to 8.