JP2016149700A - Radio transmitter, radio receiver, radio transmission and reception system, radio communication device, radio transmission method and radio reception method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a latency at data transmission and reception using a plurality of radio channels and improve a band use efficiency of each channel in a radio transmitter, a radio receiver, a radio transmission and reception system, a radio communication device, a radio transmission method and a radio reception method.SOLUTION: The radio transmitter includes: a calculation unit 15 which calculates the total value of a data transmission volume transmittable by a plurality of radio channels, on the basis of the transmission rate of each of the plurality of radio channels; and a data division unit 16 which performs, based on the total value, the string conversion of input data in the bit direction in a manner to rearrange into bit-width data having a bit width transmittable by the plurality of radio channels, to divide the bit-width data into transmission data having a predetermined length in the bit direction, according to the transmission capacity of each radio channel.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a wireless transmission device, a wireless reception device, a wireless transmission / reception system, a wireless communication device, a wireless transmission method, and a wireless reception method that reduce transmission time when data is divided and transmitted.

  A digital microwave communication system (DMR: Digital Microwave Radio) has a transmission capacity of about several hundreds Mbps per wireless line. On the other hand, GbE / 10GbE (10 Gigabit Ethernet: registered trademark) is becoming popular for wireless communication using the Ethernet: registered trademark (ETH) interface. In order to realize this, methods for improving throughput by bundling a plurality of wireless lines have been proposed (Patent Documents 1 and 2).

  Patent Document 1 describes a load balance control unit capable of executing appropriate load distribution for a plurality of transmission paths. The load balance control unit operates in a transmission apparatus that transmits a plurality of unit data transmitted by being divided into predetermined data lengths to a counter apparatus via a plurality of transmission paths. The load balance control unit has a distribution buffer provided for each transmission line, and for each distribution buffer, consider the retention status of each distribution buffer, the threshold for the retention upper limit of each buffer, and the amount of unit data. Thus, it is determined to which distribution buffer the unit data is written. According to the load balance control unit, it is possible to perform appropriate load distribution for each transmission line even when the threshold value of each transmission line buffer dynamically corresponds to variable length data. it can.

  Patent Document 2 describes a wireless transmission device that transmits and receives data via a plurality of wireless lines. When the received data is converted into transmission data to be transmitted via a plurality of radio channels, the radio transmission device receives the data if the amount of received data exceeds the total transmission capacity of the plurality of radio channels. Conversion means for converting transmission data narrowed down to the bandwidth of the wireless line, and transmission data distribution means for distributing the transmission data to each of the plurality of wireless lines based on the ratio of the wireless transmission capacity of each of the plurality of wireless lines And. According to the wireless transmission device, it is possible to perform appropriate load balance control without causing transmission data to be discarded in the wireless line system.

International Publication No. 2011/118542 International Publication No. 2011/052446

  According to the devices and the like described in Patent Document 1 and Patent Document 2, when transmitting data is divided into a plurality of transmission lines such as a wireless line, a frame of transmission data is divided in the length direction (time direction) and each wireless Sorted to lines. Since the divided data is sequentially transmitted and received, a waiting time is required when transmitting data on the transmitting side and restoring received data on the receiving side. That is, latency occurs during data transmission / reception. In addition, since information indicating the order of assembly is added to each divided frame, there is a problem that overhead increases and band use efficiency decreases.

  The present invention relates to a wireless transmission device, a wireless reception device, a wireless transmission / reception system, a wireless communication device, and a wireless transmission method that reduce latency when transmitting / receiving data using a plurality of wireless channels and improve the band use efficiency of the channel. It is another object of the present invention to provide a wireless reception method.

One aspect of the present invention is a calculation unit that calculates a total value of transmission capacities of data that can be transmitted through a plurality of the wireless channels based on the transmission rates of the plurality of wireless channels;
A conversion unit that converts input data into bit width data in which data is arranged in the bit width direction of the bit width based on the total value;
A data dividing unit that divides the bit width data into transmission data having a predetermined length in the bit direction according to the transmission capacity of each wireless line;
A wireless transmission device.

According to one aspect of the present invention, a wireless reception unit that receives a plurality of transmission data respectively having a predetermined length in the bit direction transmitted through a plurality of wireless circuits on a transmission side, and a plurality of wireless circuits,
A receiving unit that arranges the received data received in the bit width direction and combines them to restore the received frame data;
A wireless receiver.

One aspect of the present invention is a calculation unit that calculates a total value of transmission capacities of data that can be transmitted through a plurality of the wireless channels based on the transmission rates of the plurality of wireless channels;
A conversion unit that converts input data into bit width data in which data is arranged in the bit width direction of the bit width based on the total value;
A data dividing unit that divides the bit width data into transmission data having a predetermined length in the bit direction according to the transmission capacity of each wireless line;
A wireless transmission device;
A wireless receiver having a plurality of wireless lines for receiving the transmission data;
A radio receiving device having a restoration unit that arranges and combines the received data received in the bit width direction and restores the received frame data,
A wireless transmission / reception system.

One aspect of the present invention is a step of calculating a total value of transmission capacities of data that can be transmitted through a plurality of the radio channels based on respective transmission rates of the plurality of radio channels;
The column conversion is performed so that the data input based on the total value is rearranged into a plurality of bit width data having a bit width that can be transmitted through the plurality of radio channels,
Dividing the bit width data into transmission data having a predetermined length in the bit direction according to the transmission capacity of each wireless line, and
This is a wireless transmission method.

One aspect of the present invention is the step of receiving a plurality of transmission data respectively having a predetermined length in the bit direction transmitted on a plurality of radio channels on the transmission side, on each of the plurality of radio channels;
Receiving the received frame data by combining the received data received in the bit width direction and combining the received data.
This is a wireless reception method.

One aspect of the present invention is a wireless transmission device that transmits input data through a plurality of wireless lines.
The wireless communication apparatus is characterized in that the input data has the same wireless frame length and is divided according to the modulation multi-level number.

  According to the wireless transmission device, the wireless reception device, the wireless transmission / reception system, the wireless communication device, the wireless transmission method, and the wireless reception method according to the present invention, the latency is reduced when data is transmitted / received using a plurality of wireless lines, and the line It is possible to improve the band use efficiency.

1 is a block diagram schematically showing the configuration of a wireless transmission device according to a first embodiment. It is the block diagram which showed the structure of the ETH (Ethernet) signal processing part which a radio | wireless transmission apparatus has. It is the block diagram which showed the structure of the radio | wireless transmission part which a radio | wireless transmission apparatus has. It is the flowchart which showed operation | movement of the radio | wireless transmitter. It is the figure which showed schematically the specific example of the radio | wireless frame transmitted with a radio | wireless transmitter. It is the figure which showed the comparative example which divides | segments the flame | frame of the data transmitted in a length direction. It is the figure which showed roughly the data divided | segmented and transmitted with a radio | wireless transmitter. It is the block diagram which showed schematically the structure of the radio | wireless receiver concerning 2nd Embodiment. It is the block diagram which showed the structure of the radio | wireless receiving part which a radio | wireless receiver has. It is the block diagram which showed the structure of the ETH (Ethernet) signal processing part which a radio | wireless receiver has. It is the flowchart which showed operation | movement of the radio | wireless receiver. It is the block diagram which showed schematically the structure of the radio | wireless transmission / reception apparatus which the radio | wireless transmission / reception system concerning 3rd Embodiment has. It is the block diagram which showed the structure of the radio | wireless transmission / reception part which a radio | wireless transmission / reception apparatus has. It is the block diagram which showed the structure of the ETH (Ethernet) signal processing part which a radio | wireless transmission / reception apparatus has. It is the figure which showed the structure of the radio | wireless transmission / reception system roughly.

Hereinafter, embodiments of a wireless transmission device, a wireless reception device, a wireless transmission / reception system, a wireless transmission method, and a wireless reception method according to the present invention will be described with reference to the drawings.
[First Embodiment]
As shown in FIG. 1, a wireless transmission device 10 is a transmission device having an ETH (Ethernet: registered trademark) interface, and an ETH signal processing unit 11 that divides data of an input ETH frame, and an ETH signal processing unit 11 and a plurality of wireless transmission units T1,..., Tn for wirelessly transmitting the divided data. The wireless transmission device 10 is a backhaul device used for communication between base stations, for example.

  As shown in FIG. 2, the ETH signal processing unit 11 is provided with a MAC (Media Access Control) unit 12 for inputting an ETH frame on the upstream side, and a transmission buffer unit 13 on the downstream side of the MAC unit 12. Is connected. A GFP (Generic Framing Procedure) transmission processing unit 14 is connected to the downstream side of the transmission buffer unit 13. A transmission frame dividing unit 16 is connected to the downstream side of the GFP transmission processing unit 14. Further, a transmission rate control unit 15 is connected to the GFP transmission processing unit 14. Wireless transmission units T1,..., Tn (see FIG. 1) are connected to the transmission frame dividing unit 16.

  The MAC unit 12 performs an FCS (Frame Check Sequence) check on an ETH frame (input data) input from an external device or the like connected to the upstream side, checks whether there is an error in the received ETH frame, and detects data loss. To detect. The MAC unit 12 outputs the checked ETH frame to the transmission buffer unit 13 as a MAC output frame. The transmission buffer unit 13 sequentially outputs the stored data to the GFP transmission processing unit 14 as a transmission buffer output frame. The transmission buffer unit 13 is controlled by a transmission buffer read control signal input from the GFP transmission processing unit 14. The transmission buffer unit 13 stops outputting the transmission buffer output frame when the read stop control is enabled by the transmission buffer read control signal.

  The GFP transmission processing unit 14 adds a GFP header for each frame of the input transmission buffer output frame, and stores it in an internal buffer (not shown) provided inside. The GFP transmission processing unit 14 reads data from the internal buffer and stops reading in accordance with a transmission data request signal input from a transmission rate control unit 15 described later. The GFP transmission processing unit 14 inserts an idle frame when data reading occurs even though the internal buffer is empty. Conversely, when the internal buffer exceeds a bufferable threshold, the GFP transmission processing unit 14 outputs a read stop control signal (Pause control signal) to the transmission buffer. The GFP transmission processing unit 14 outputs the transmission GFP frame to the transmission frame dividing unit.

  The transmission rate control unit (calculation unit) 15 performs wireless transmission of the wireless transmission units T1,..., Tn from the multiplexable bit width information B1,..., BN input from the data multiplexing units M1,. The total value of the capacity is calculated. The multiplexable bit width information B1,..., BN is information relating to the transmission rate of the wireless channel and the bit width of transmittable data of each of the wireless transmission units T1,. Each of the multiplexable bit width information B1,..., BN includes the respective bit width values of the respective bit width data transmitted in the respective wireless transmission units T1,.

  Then, the transmission rate control unit 15 outputs a transmission data request signal to the GFP transmission processing unit 14 so that the data (GFP frame) is read from the GFP transmission processing unit 14 at a speed corresponding to the calculated wireless transmission capacity. To do. The transmission rate control unit 15 can also stop the reading of the GFP transmission processing unit 14 with a transmission data request signal. Further, the transmission rate control unit 15 calculates the bit width of the transmission data based on the bit width information B1,... BN, and outputs a column conversion width control signal including the value to the transmission frame division unit 16.

  The transmission frame division unit (data conversion unit, data division unit) 16 is connected to the wireless transmission units T1,..., Tn (see FIG. 1) based on the input column conversion width control signal. The data is rearranged into bit width data having a bit width that can be transmitted through a plurality of wireless lines. That is, the transmission frame dividing unit 16 performs column conversion so that the GFP frame has a length in the bit width direction. The bit width data is data in which data is arranged in a matrix in the bit width direction perpendicular to the frame length direction of data transmitted through a plurality of radio channels as described later (see the radio frame in FIG. 5). In bit width data, the frame length depends on the ETH frame length of the input data. In the bit width data, the bit width is determined from the bit width information B1,..., Bn output from the wireless transmission units T1,.

  The transmission frame dividing unit 16 determines the bit width based on the column conversion width control signal. Then, the transmission frame dividing unit 16 divides the bit width data in the bit direction. The transmission frame dividing unit 16 supplies the divided transmission ETH data D1,..., Dn to the data multiplexing units M1,..., Mn (see FIG. 3) included in the wireless transmission units T1,. Output.

  As shown in FIG. 3, the data multiplexing units M1,..., Mn are provided in the wireless transmission units T1,. The wireless transmission units T1,..., Tn are shown as having a wireless transmission / reception function. The data multiplexing units M1,..., Mn multiplex the input transmission ETH data D1,..., Dn in the payload area (see FIG. 5). Further, the data multiplexing units M1,..., Mn store effective bit width information including bit width information B1,..., Bn of transmission data used in decoding data on the receiving side in the ACMOH area (see FIG. 5). Multiplex. Then, the data multiplexers M1,..., Mn output the multiplexed transmission radio frame data F1,..., Fn to the modulators Q1,.

  Modulators Q1,..., Qn perform radio transmission by modulating transmission radio frame data F1,..., Fn with a modulation method selected by adaptive modulation and outputting transmission modulation signals W1,. Modulators Q1,..., Qn perform modulation in accordance with transmission modulation scheme control information multiplexed in the ACMOH area (see FIG. 5) of transmission radio frame data F1,. The other modulation units Q1,..., Qn use a general method of adaptive modulation. The data multiplexing units M1,..., Mn monitor the transmission rate of their own radio lines, and output the above-described multiplexable bit width information B1,..., BN to the transmission rate control unit 15 based on the transmission rate. Although the wireless transmission device 10 is a backhaul device, an integrated device may be constructed as a wireless communication device. When the wireless transmission device 10 is used, it is possible to realize a wireless communication device that divides input data according to the modulation multilevel number with the same wireless frame length.

  Next, the operation of the wireless transmission device 10 will be described with reference to FIG.

  The data multiplexers M1,..., Mn monitor the transmission rate of their own radio lines, and output the multiplexable bit width information B1,... BN to the transmission rate controller 15 based on the transmission rate (S100). The transmission rate control unit (calculation unit) 15 calculates the total value of the transmission capacities of data that can be transmitted through a plurality of radio channels based on the multiplexable bit width information B1,. Is read out (S101). The transmission frame division unit (data conversion unit) 16 rearranges the input GFP frame into bit width data having a designated bit width (S102).

  The transmission frame dividing unit 16 divides the bit width data into transmission data having a predetermined length in the bit direction according to the transmission capacity of each wireless line (S103). The data multiplexing units M1,..., Mn multiplex each input transmission data in the payload area and each effective bit width information in the ACMOH area and output transmission radio frame data F1,. Modulators Q1,..., Qn modulate transmission radio frame data F1,..., Fn with a modulation method selected by adaptive modulation, and perform radio transmission by outputting transmission modulation signals W1,. ).

  Next, a specific example of data transmitted by the wireless transmission device 10 will be described.

  The transmission data shown in FIG. 5 is a radio frame of bit width data transmitted when the number of radio lines n = 2. The transmitted radio frame is set to be sufficiently longer than the input GFP frame. The transmission data is modulated by QPSK (Quadrature Phase Shift Keying) in the radio channel G1, and by 256 QAM (Quadrature Amplitude Modulation) in the radio channel G2. One vertical column represents one symbol of the modulation signal. The bit width of data that is QPSK modulated by the radio line G1 is 2 bits / symbol. The bit width of data that is 256QAM modulated by the radio line G2 is 8 bits / symbol.

  Accordingly, the length of the bit width in the bit direction of the transmission data transmitted through the wireless line G1 and the wireless line G2 is 2 + 8 = 10. Assuming that the transmission data radio frame length Tf = 100000, payload area length Td = 80000, and symbol rate Fs = 100 MHz, the transmission rate R is R = 100000 × 80000/100 × (2 + 8) = 800 Mbps. The transmission rate control unit 15 controls data reading from the GFP transmission processing unit 14 at the transmission rate R described above.

  The transmission frame division unit 16 converts the input transmission GFP frame into 10-bit width data, and outputs the upper two bits to the data multiplexing unit M1 and the lower eight-bit width to the data multiplexing unit M2. . Thereby, the data for the upper 2 bits / symbol width and the data for the lower 8 bits / symbol width are wirelessly transmitted by the wireless transmission units T1 and T2, respectively.

  First, as a comparative example, a method of dividing a frame of data to be transmitted in the length direction (time direction) will be described. FIG. 6A shows an example in which data is transmitted at 1024 QAM (800 Mbps) using one wireless line. For example, when data having a transmission GFP frame length of 5120 bytes is transmitted through one wireless line, the data is transmitted without being divided. Next, an example in which the same data is transmitted through two wireless lines of QPSK (160 Mbps) and 256 QAM (640 Mbps) as shown in FIG. The data is divided and transmitted to the radio line G1 and the radio line G2. The divided data is sequentially transmitted over time.

  The data transmitted through the wireless line G1 is the first data (divided frame 1) when the data in FIG. 6A is divided into five, and is transmitted at QPSK (transmission rate 160 Mbps). That is, in the wireless line G1, the divided data corresponding to the data stored in the divided frame 1 in FIG. 6A is stored and transmitted in the entire frame length of 1024 bytes. At this time, since the header including the sequence number is added to each divided frame, the total amount of data of the divided frame 1 is increased by 1024 bytes by the increment (α) of the sequence number.

  The data transmitted through the wireless line G2 is four data (divided frames 2 to 4) when the data in FIG. 6A is divided into five, and is transmitted at 256 QAM (transmission rate 640 Mbps). That is, in the wireless line G2, the divided data corresponding to the data stored in the divided frames 2 to 5 in FIG. 6A is stored in the divided frames 2 to 5 of 4096 bytes and transmitted. At this time, since a header including a sequence number is added to each divided frame at this time, the total amount of data of the divided frames 2 to 4 is increased to 4096 bytes by the increment (β) of the sequence number.

  In this case, the data stored in the divided frame 2 of the wireless line G2 is delayed until transmission is started. For this reason, in the transmission of data on the wireless line G2, in principle, a latency in which the increment d of the sequence number is added to 10.24 us is generated by the end of transmission as compared with the case of transmitting without dividing the data. Increasing the number of data divisions can reduce the increase in latency. However, on the other hand, the sequence number added to each of the divided data increases, the proportion of overhead (sequence number) per radio frame increases, and the use efficiency of the bandwidth of the radio line decreases.

  On the other hand, as shown in FIG. 7, the wireless transmission device 10 rearranges transmission data into bit width data having a predetermined length in the bit direction and divides the transmission data into divided blocks in the bit width direction. Latency does not increase. In addition, since the bit width information B1,..., Bn multiplexed in the ACMOH area is used to divide the data and assemble the frame, it is possible to prevent a reduction in the use efficiency of the radio channel band. FIG. 7A shows a case where data is transmitted through one wireless line. Here, the data is divided in the bit direction.

  That is, in this division, since bit width information B1,..., Bn multiplexed in the ACMOH area is used, compared with the case where the sequence numbers added to the divided data in FIG. The ratio occupied by the ACMOH area (overhead) is reduced. As a result, the use efficiency of the bandwidth of the radio line is higher than in the case of FIG. FIG. 7B shows a case where data is transmitted through two wireless lines. Here, the data divided in the bit direction is transmitted through the radio channel G1 and the radio channel G2, respectively. Since the data transmitted in the division block 1 of the radio channel G1 and the data transmitted in the division block 2 of the radio channel G2 are transmitted at the same time, no latency occurs compared to the case of FIG.

  As described above, according to the wireless transmission device 10, since data transmitted through a plurality of wireless channels is divided in the bit direction and transmitted through the respective wireless channels, the latency is higher than that in the method of dividing the data in the frame direction. Generation can be reduced. Further, according to the wireless transmission device 10, since the bit width information B1,..., Bn multiplexed in the ACMOH region is used, it is possible to improve the band use efficiency of the wireless line.

[Second Embodiment]
Hereinafter, the wireless reception device 20 that receives the transmission data transmitted by the wireless transmission device 10 and restores the received frame data will be described.

  As illustrated in FIG. 8, the wireless reception device 20 is a reception device having an ETH (Ethernet) interface, and a plurality of wireless reception units K1, K1 for receiving data divided and transmitted from the wireless transmission device 10 ..., Kn, and an ETH signal processing unit (restoring unit) 21 for restoring the received data to the received frame data which is the original data. The wireless reception device 20 is a backhaul device used for communication between base stations, for example.

  As shown in FIG. 9, the wireless receivers K1,..., Kn receive reception modulation signals (received data) X,. The wireless receivers K1,..., Kn are shown as having a wireless transmission / reception function. The radio reception units K1,..., Kn are provided with demodulation units U1,..., Un that receive data on the upstream side as viewed from the radio line side, and information and data multiplexed on the reception data on the downstream side. Are connected to data extraction units S1, ..., Sn.

  The demodulation units U1,..., Un demodulate the received received modulation signals X,..., Xn using the specified reception modulation method information, and receive data frame units H1,. ..., output to Sn. The data extraction units S1, ..., Sn extract the received ETH data V1, ..., Vn from the payload data area (see Fig. 5) of the received radio frame data H1, ..., Hn. Further, the data extraction units S1,..., Sn receive the reception effective bit width information Y1,... From the ACMOH area (see FIG. 5) of the reception radio frame data H1,. . , Yn are extracted. The data extraction units S1,..., Sn have received ETH data V1,. . , Yn are output to the ETH signal processing unit 21, respectively.

  As shown in FIG. 10, the ETH signal processing unit 21 receives received ETH data V1,..., Vn and received valid bit width information Y1,. . , Yn are input, and an output ETH frame (received frame data) is generated. The ETH signal processing unit 21 receives received ETH data V1,..., Vn and received valid bit width information Y1,. . , Yn is received. A GFP reception processing unit 23 is connected to the downstream side of the reception frame assembly unit 22. A reception buffer 24 is connected to the downstream side of the GFP reception processing unit 23. A MAC unit 25 is connected to the downstream side of the reception buffer 24.

  The reception frame assembly unit 22 receives the reception valid bit width information Y1,. . , Yn, the received ETH data V1,..., Vn input from the data extraction units S1,. Receive effective bit width information Y1,. . , Yn include a bit width value when the received data that can be received at the reception rate of the wireless line is column-converted in the bit direction. For example, when the wireless transmission device 10 of the first embodiment receives transmission data, the reception frame assembling unit 22 combines the received ETH data V1,..., Vn to generate 10-bit width data. The received frame assembling unit 22 rearranges the combined received ETH data V1,..., Vn into GFP received frame data having a bit width (8 bits), and restores the GFP received frame. That is, the reverse process of the transmission frame dividing unit 16 of the wireless transmission device 10 is performed. The reception frame assembly unit 22 outputs the GFP reception frame to the GFP reception processing unit 23.

  After establishing the GFP synchronization, the GFP reception processing unit 23 removes the GFP header from the GFP reception frame and outputs it to the reception buffer 24. The reception buffer 24 performs FCS check on the input frame and outputs it to the MAC unit 25. The MAC unit 25 outputs the input frame as an output ETH frame to an external device (not shown) connected downstream.

  That is, the wireless reception units K1,..., Kn receive a plurality of transmission data respectively having a predetermined length in the bit direction transmitted by a plurality of transmission-side wireless lines, respectively. Then, the wireless receivers K1,..., Kn receive effective bit width information Y1,..., Including bit width values when data that can be received at a wireless channel reception rate is multiplexed. . , Yn are extracted. Then, the ETH signal processing unit 21 receives the reception valid bit width information Y1,. . , Yn, the received data is arranged in the bit width direction and combined in a plurality of radio channels, and the received effective bit width information Y1,. . , Yn, the received frame data is restored. In this way, the wireless reception device 20 can restore the original data from the received data.

  Next, the operation of the wireless reception device 20 will be briefly described with reference to FIG.

  The demodulation units U1,..., Un receive the modulated signals each having a predetermined length in the bit direction transmitted through the plurality of radio channels on the transmission side (S200). The demodulation units U1,..., Un demodulate the received reception modulation signals (reception data) X,..., Xn using the specified reception modulation method information (S201). The data extraction units S1,..., Sn receive the received ETH data V1,. . , Yn are extracted (S202). The ETH signal processing unit 21 receives received ETH data V1,..., Vn and received valid bit width information Y1,. . , Yn are input, and an output ETH frame (received frame data) is generated (S203).

  As described above, according to the wireless reception device 20, since transmission data transmitted by dividing the data in the bit direction is received and restored, the generation of latency is reduced compared to the method of dividing the data in the frame direction. can do. Also, according to the wireless receiver 20, the bit width information Y1,. . , Yn are used, the band use efficiency of the radio line can be increased.

[Third Embodiment]
The wireless transmission / reception system 100 can be constructed using the wireless transmission device 10 and the wireless reception device 20 described above. In the following description, the same reference numerals are used for the same components in the components described above, and overlapping descriptions are omitted as appropriate.

As illustrated in FIG. 12, the wireless transmission / reception device 30 includes components of the wireless transmission device 10 and the wireless reception device 20. As shown in FIG. 13, the wireless transmission / reception units Z1,..., Zn include components of wireless transmission units T1,..., Tn and wireless reception units K1,. As illustrated in FIG. 14, the ETH signal processing unit 31 includes components of an ETH signal processing unit 11 of the wireless transmission device 10 and an ETH signal processing unit 21 of the wireless reception device 20.
The wireless transmission / reception system 100 shown in FIG. 15 can wirelessly transmit / receive data by dividing the data in the bit direction between the base stations 50 to which the wireless transmission / reception apparatus 30 is connected.

  In other words, the wireless transmission / reception system 100 is configured such that, in the wireless transmission / reception apparatus 30 connected to the transmission-side base station 50, the total transmission capacity of data that can be transmitted on the plurality of wireless lines based on the transmission rates of the plurality of wireless lines The value is calculated, and the input data based on the total value is column-converted so as to be rearranged into bit width data having a bit width that can be transmitted by a plurality of wireless lines, and the bit width data is converted into the transmission capacity of each wireless line. Accordingly, the data is divided into transmission data having a predetermined length in the bit direction and transmitted. Then, the wireless transmission / reception device 30 connected to the base station 50 on the receiving side receives the transmission data from each of the plurality of wireless lines, arranges the received data arranged in the bit width direction, combines them, and rearranges the received frames. Restore data.

  Then, the wireless transmission / reception system 100 generates bit width information including a bit width value when data that can be transmitted at the transmission rate of the wireless line is subjected to column conversion in the wireless transmission / reception apparatus 30 connected to the base station 50 on the transmission side. Then, the total value of the transmission capacities of the column-converted data transmitted through the plurality of radio channels is calculated based on the bit width information, and the bit width information is multiplexed with the transmission data and transmitted. Then, in the radio transmitting / receiving apparatus 30 connected to the receiving-side base station 50, the bit width information multiplexed on the received data is extracted, and the received data is bit-widthed by a plurality of radio channels based on the bit width information. The data is combined in the direction to generate combined data, and the received frame data is restored from the combined data based on the bit width information.

[Other Embodiments]
In the above embodiment, it is described that the wireless transmission device 10 and the wireless reception device 20 are used for wireless communication between base stations. In addition, in the above embodiment, the wireless reception device 20 may be replaced with a mobile station. In the above embodiment, communication via a wireless line has been shown, but the wireless line may be a wired line.

DESCRIPTION OF SYMBOLS 10 Radio transmission apparatus 11 Signal processing part 12 MAC part 13 Transmission buffer part 14 Transmission processing part 15 Transmission rate control part 16 Transmission frame division part 20 Radio reception apparatus 21 Signal processing part 22 Reception frame assembly part 23 Reception processing part 24 Reception buffer 25 MAC unit 30 Wireless transmission / reception device 31 Signal processing unit 50 Base station 100 Wireless transmission / reception system B1,..., Bn Bit width information D1, ..., Dn Data F1, ..., Fn Transmission radio frame data Fs Sampling rate G1 Radio channel G2 Radio channel H1 ,..., Hn reception radio frame data K1,..., Kn radio reception units M1,..., Mn data multiplexing unit M2 data multiplexing unit n number of radio channels Q1,..., Qn modulation unit R transmission rate S1,. T1,..., Tn Radio transmitter Td Payload area length Tf Radio frame length U1,..., Un Demodulator V1,. .., Wn Transmission modulation signal X1,..., Xn Reception modulation signal Y1,..., Yn Reception effective bit width information Z1,.

Claims (13)

A calculation unit that calculates a total value of transmission capacities of data that can be transmitted through the plurality of wireless lines based on respective transmission rates of the plurality of wireless lines;
A conversion unit that converts input data into bit width data in which data is arranged in the bit width direction of the bit width based on the total value;
A data dividing unit that divides the bit width data into transmission data having a predetermined length in the bit direction according to the transmission capacity of each wireless line;
Wireless transmission device. A wireless transmission unit connected to the wireless line;
The wireless transmission unit generates bit width information including a bit width value when data that can be transmitted at the transmission rate of the wireless line is converted,
The calculation unit calculates the total value of the transmission capacities of converted data transmitted through the plurality of the radio lines based on the bit width information.
The wireless transmission device according to claim 1. The wireless transmission unit transmits the bit width information multiplexed with the transmission data,
The wireless transmission device according to claim 2. A radio reception unit that receives a plurality of transmission data respectively having a predetermined length in the bit direction transmitted by a plurality of radio lines on the transmission side, and a plurality of radio lines;
A receiving unit that arranges the received data received in the bit width direction and combines them to restore the received frame data;
Wireless receiver. The wireless reception unit extracts bit width information including a bit width value when the data that can be received at the reception rate of the wireless line multiplexed to the reception data is subjected to column conversion,
The restoration unit arranges and combines the reception data in a plurality of the radio lines based on the bit width information in the bit width direction, and restores the reception frame data based on the bit width information.
The wireless receiver according to claim 4. A calculation unit that calculates a total value of transmission capacities of data that can be transmitted through the plurality of wireless lines based on respective transmission rates of the plurality of wireless lines;
A conversion unit that converts input data into bit width data in which data is arranged in the bit width direction of the bit width based on the total value;
A data transmission unit that divides the bit width data into transmission data having a predetermined length in the bit direction according to the transmission capacity of each wireless line;
A wireless receiver having a plurality of wireless lines for receiving the transmission data;
A radio receiving device having a restoration unit that arranges and combines the received data received in the bit width direction and restores the received frame data,
A wireless transmission / reception system. The wireless transmission device generates bit width information including a bit width value when data that can be transmitted at the transmission rate of the wireless line is converted, and is transmitted on a plurality of the wireless lines based on the bit width information. Calculating the total value of the transmission capacity of the converted data, multiplexing the bit width information with the transmission data, and transmitting,
The wireless reception device extracts the bit width information multiplexed on the reception data, and combines the reception data in the bit width direction on the plurality of wireless lines based on the bit width information, and combines the bits. Restoring the received frame data based on width information;
The wireless transmission / reception system according to claim 6. Calculating a total value of transmission capacities of data that can be transmitted on the plurality of wireless lines based on respective transmission rates of the plurality of wireless lines;
Converting input data into bit width data in which data is arranged in the bit width direction of the bit width based on the total value;
Dividing the bit width data into transmission data having a predetermined length in the bit direction according to the transmission capacity of each wireless line,
Wireless transmission method. Generating bit width information including a bit width value when data that can be transmitted at the transmission rate of the wireless line is converted;
Calculating the total value of the transmission capacities of the converted data transmitted on the plurality of wireless lines based on the bit width information, and
The wireless transmission method according to claim 8. Further comprising the step of multiplexing and transmitting the bit width information to the transmission data,
The wireless transmission method according to claim 9. Receiving a plurality of transmission data respectively having a predetermined length in the bit direction transmitted on a plurality of radio lines on the transmission side, on each of the plurality of radio lines;
Receiving the received frame data by combining the received data received in the bit width direction and combining the received data.
Wireless reception method. Extracting the bit width information including the bit width value when the data that can be received at the reception rate of the wireless line multiplexed to the reception data is converted into a column;
Aligning and combining the received data in a bit width direction on a plurality of the radio lines based on the bit width information; and
Reconstructing the received frame data based on the bit width information,
The wireless reception method according to claim 11. In a transmission device that transmits input data via a plurality of wireless lines,
A radio communication apparatus, characterized in that the input data has the same radio frame length and is divided according to the modulation multi-level number.

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