JP2009111653A - Multiplexed data communication method, system thereof, and multiplexed data communication apparatus constituting the system - Google Patents

Abstract

【Task】
Providing a data communication method and device that can be transmitted sequentially from the beginning even when not all the data to be transmitted is prepared at the start of transmission, and that always ensures reliability and high speed and is effective even in a multiplexed network of duplex or higher [Solution]
The original data to be transmitted to transmit data from the information processing apparatus 100 to the information processing apparatus 200 is divided into a predetermined size from the top, a division number is added, and the divided data is sequentially transmitted by changing the network one by one. In this case, the end of the original data or a certain number of pieces of divided data is transmitted with the information indicating the end, and retransmission is performed from the first piece of divided data. At that time, the same divided data is not transmitted to the same network. To choose a network.
[Selection] Figure 1

Description

  The present invention relates to a communication method and system for transmitting / receiving data between at least two or more information processing apparatuses using a multiplexed network, and to an apparatus constituting the system.

  When data transmission / reception is performed with high reliability between information processing apparatuses using networks, the networks are multiplexed, and the same data is transmitted to each network simultaneously or with a time difference.

  In this type of multiplexed communication method, if at least one network is normal, data transmission / reception is performed normally, so high reliability is obtained.

  However, there is a problem that the same data is transmitted to each network when there is no abnormality, and there is a lot of waste.

  As a known technique for solving this problem, Patent Document 1 discloses that data to be transmitted is divided in a device connected to a duplex network, and the divided data is transmitted to the first network in order from the top. In the second network, a technique is disclosed in which divided data is transmitted in reverse order from the end, so that high-speed communication is always possible and reliability can be ensured.

Japanese Patent Laid-Open No. 10-13389

  In the duplex communication device of Patent Document 1 described above, since data to be transmitted is transmitted from the first data and the last data after division, the data exists in a complete form from the first to the last at the start of transmission processing. Therefore, transmission can be started only after completion of the data division processing.

  For this reason, it is difficult to apply to a case where data is transmitted in the order in which data is prepared, for example, stream data.

  In addition, the order of data to be transmitted to each network is determined in advance, and the data is transmitted sequentially. However, if part of the divided data is lost or the data arrival order to the receiving side device changes, the network Is determined to be abnormal, and thereafter communication is performed in an abnormal state, so it is difficult to obtain an effect of speeding up.

  Further, since the forward order and the reverse order are respectively transmitted to one of the duplex networks, it is difficult to enjoy further speedup in the case of multiplexing over triple.

The present invention aims to provide a communication method and the like that can start transmission sequentially from the beginning even if all data from the beginning to the end is not complete,
It is another object of the present invention to provide a communication method capable of ensuring high speed even when the data arrival order is changed. Another object of the present invention is to provide a communication method capable of ensuring high speed.

  The multiplexed data communication system of the present invention performs n-duplex communication using at least first to n-th n networks between at least first and second information processing apparatuses. The processing apparatus includes data dividing means for dividing data to be transmitted into a predetermined size, first to nth network IF means for providing an interface with the first to nth networks, and the first to nth. Transmission control means for allocating and transmitting the divided data to the network IF, and providing the second information processing apparatus with an interface with the first to nth networks. Network IF means, reception control means for receiving the divided data received by the first to n-th network IFs and storing them in a reception memory; and the minutes stored in the reception memory Scanning the data, in which all the divided data has a data combining means for combining the data Once aligned.

  Then, when data is transmitted from the first information processing apparatus on the data transmission side to the second information processing apparatus on the data reception side, the original data is divided into a predetermined size from the beginning. Then, the divided first data is assigned to the first network IF for transmission, the second data is assigned to the second network IF for transmission, and then the nth data is designated as the nth network IF. Assign to and send. Further, after the transmission of the n-th network IF, the (n + 1) -th data is again assigned to the first network IF, and thereafter, the divided data is assigned and transmitted in order from the first network IF to the n-th network.

  When the first transmission of the entire data is completed in this way, the first data is assigned to the second network IF, the n−1th data is assigned to the nth network IF, and the first network IF is assigned. The nth data is allocated to the second network IF, the (n + 1) th data is allocated to the second network IF, and thereafter, the transmission is repeated until the second transmission of the entire data is completed.

  This is repeated a total of n times until the first data is assigned to each network IF.

  In the second information processing apparatus, the reception control means analyzes the division data of the received data sent to the first to n-th network IFs, checks the reception memory, and has already received the divided data. Otherwise, it is stored in the reception memory.

  The data combining means scans the reception memory, combines the divided data in order from the beginning, and restores the original data when it is confirmed that all the divided data is received up to the last divided data. At this time, if there is no abnormality in all of the first to n-th networks, the data transmission is completed when the first data transmission of the first information processing apparatus is received. Since data transmission is performed using a network in parallel, data transmission / reception can be performed in 1 / n of the time required for transmission through a single network. Further, even if an abnormality occurs in any of the networks, correct data transmission is possible as long as there is a normal network even in one system, and reliability can be ensured.

  According to the present invention, even if all data from the beginning to the end is not complete, transmission can be started sequentially from the beginning.

  According to the present invention, it is possible to ensure high speed even when the data arrival order changes.

  According to the present invention, it is possible to ensure high speed even in a multiplexed network of triple or higher.

  That is, according to the invention, the transmission data is divided from the head, the divided data is sequentially allocated to each multiplexed network and transmitted, and on the receiving side, the divided data is received from each multiplexed network. When all the divided data up to are received, the reception is completed. When there is no error in the network etc., if the number of multiplexing is m, file transmission is possible in about 1 / m time. Further, since data transmission is possible as long as all the multiplexed networks do not become abnormal, reliability is ensured.

  Embodiment 1 and Embodiment 2 of the present invention will be described with reference to FIGS.

  FIG. 1 is a diagram showing a configuration of a duplex data communication apparatus according to Embodiment 1 of the present invention. This duplex data communication system includes two information processing apparatuses 100 and 200, a LANa network 300a, and a LANb network 300b. Here, the configuration of two information processing devices is shown, but a configuration in which three or more information processing devices are connected to the networks 300a and 300b may be used. Further, not only one-to-one communication but also one-to-X communication (X is an integer of 2 or more) and X-to-X communication are applicable. Note that an element (for example, an information processing apparatus) configuring a network is defined as a node.

  The information processing apparatus 100 divides the data to be transmitted into a predetermined size (size determined by the protocol between the information processing apparatus 100 and the information processing apparatus 200) from the beginning, and is necessary when combining the divided data Select from 300a and 300b a network to transmit in accordance with a data division processing unit 101 that converts information into divided data and a predetermined rule (a rule determined by a protocol between the information processing apparatus 100 and the information processing apparatus 200), A transmission control processing unit 102 that performs a process of passing the divided data to a network IF (interface) connected to the selected network, a network IFa 103a that is connected to the network 300a and transmits / receives data, and a data transmission / reception that is connected to the network 300b. Network IFb 103b to perform; A process for receiving the divided data received by the network IFa 103a and the network IFb 103b, checking the reception memory 105 to check whether the received divided data has been received, and storing it in the reception memory 105 if not received. A reception processing unit 104 that performs the processing, a reception memory 105 that stores the received divided data, and a data combination processing unit 106 that performs processing for acquiring and combining the divided data received from the reception memory 105 to reconstruct the original data I have. The divided data may be defined as a packet.

  Similarly to the information processing apparatus 100, the information processing apparatus 200 includes a data division processing unit 201, a transmission control processing unit 202, a network IFa 203a connected to the network 300a, and a network IFb 203b connected to the network 300b. A reception processing unit 204, a reception memory 205, and a data combination processing unit 206 are provided.

  The information processing apparatus 100 and the information processing apparatus 200 can transmit and receive data to and from each other through the network IFs 103a and 203a connected to the network 300a and the network IFs 103b and 203b connected to the network 300b. The most characteristic feature of the present invention resides in a data transmission method from one information processing apparatus to the other information processing apparatus using the networks 300a and 300b.

  Here, the functions of the processing units 101, 102, 104, 106, 201, 202, 204, and 206 of the information processing apparatus 100 and the information processing apparatus 200 are functions such as a personal computer configured by a memory and a CPU (central processing unit). By mounting operating software on the information processing apparatus, and loading and executing a program for realizing each function on the operating software in the memory, the function can be realized. Note that all or part of the above configuration may be realized by dedicated hardware.

  Next, a data transmission method of the duplex data communication system according to the first embodiment of the present invention will be described. For the sake of explanation, a case where data is transmitted / received from the information processing apparatus 100 to the information processing apparatus 200 will be described, but the reverse is also possible.

  In the information processing apparatus 100, as shown in FIG. 2, the data division processing unit 101 divides the transmission source data into a predetermined size from the top, and generates first to Nth divided data. The predetermined size is preferably constant, but is not essential. For example, the size of the Nth divided data may not be equal to the predetermined size.

  As shown in FIG. 2, the transmission control processing unit 102 selects the data transmission network IF so that the divided data is alternately transmitted to the networks 300a and 300b. That is, when the first divided data is transmitted to the network 300a, the second divided data is transmitted to the network 300b, and when the third divided data is transmitted to the network 300a, the fourth divided data is transmitted. Data is transmitted to the network 300b. Further, the transmission control processing unit 102 transmits the same original data (the same divided data) twice as shown in FIG. At this time, the transmission control processing unit 102 starts the first transmission of the second portion of data after completing the first to Nth transmissions of the first divided data. preferable. Furthermore, when the transmission control processing unit 102 transmits the first divided data in order from the first to the Nth, it is preferable to transmit the second divided data in order from the first to the Nth. Further, in the transmission control processing unit 102, when the first first divided data is transmitted to the network 300a regardless of whether N is odd or even, the second first divided data is transmitted to the network 300b. It is preferable to transmit. That is, it is preferable that the network of the first divided data for the first time and the network of the first divided data for the second time are different regardless of whether N is an odd number or an even number.

  FIG. 3 shows a flowchart of the transmission process.

  First, a process counter n indicating the divided data currently being transmitted is initialized to 1, and a transmission counter m indicating the number of data transmissions is initialized to 1 (step 401). Next, the data division processing unit 101 creates the nth divided data (step 402). Next, the transmission control processing unit transmits the n-th divided data created in step 402 from the network IF selected according to the rules shown in FIG. 4 (step 403). Next, it is determined whether or not the nth divided data is the end of the original data (data end) (step 404). If the decision result in the step 404 is NO, the process counter is incremented and the process proceeds to a step 402. If the decision result in the step 404 is YES, the process counter n is initialized to 1 (step 406). Further, the transmission number counter m is incremented (step 407). Next, the network multiplexing number and the transmission number counter m are compared (step 408). If the comparison result m is equal to or smaller than the network multiplexing number, the process proceeds to step 402, and if not, the process is completed.

  FIG. 4 shows a rule for selecting a network of the transmission control processing unit in the case of a duplex network. As shown in FIG. 4, whether or not the divided data to be transmitted is the first (first) (501), the number of transmissions of the divided data to be transmitted (502), and the previous divided data to be transmitted. A network is selected (505) based on three conditions, which network the divided data is transmitted to (503).

  When the divided data to be transmitted is the first (first), the transmission network is selected depending on the number of transmissions. Specifically, the network 300a is selected for the first time, and the network 300b is selected for the second time. In other words, the first network and the second network are changed.

  When the divided data to be transmitted is other than the head, the network is selected based on the transmission destination network of the previous divided data. Specifically, the network 300b is selected when the previous transmission destination is the network 300a, and the network 300a is selected when the previous transmission destination is the network 300b. In other words, change the previous network and the current network.

  The rules described above are determined so that all the divided data are always transmitted to each network once, and the interval at which the same divided data is transmitted when viewed on all networks is equal. Therefore, even if all data from the beginning to the end is not complete, transmission can be started sequentially from the beginning.

  FIG. 6 shows an example of a structure diagram of the divided data. 601 is a “division number” indicating the number of divided data from the beginning, 602 is an “original data identifier” for identifying divided data, and 603 is for identifying the case where the divided data is the head and the end. “Start / End flag” 604 is divided data. A number indicating the number of times of transmission may be further included. The division processing unit 101 assigns a division number 601 to each piece of divided data, and adds the division number 601, the original data identifier 602, and the head / end flag 603 to the divided data as a header.

  FIG. 8 shows a flowchart of the reception process.

  In the reception process, the reception processing unit 204 waits for reception of divided data to the network IFa 203a and the network IFb 203b (step 801). When the divided data is received by the network IF, the data is transferred to the reception processing unit 204 (step 802). Next, the reception processing unit 204 analyzes the received divided data, and acquires a division number 601 and an original data identifier 602 (step 803). The reception memory is searched to search for divided data in which the division number of the divided data received in the past matches the original data identifier (step 804). Here, it is determined whether the divided data is the same based on the original data identifier and the division number. If the same divided data exists, the received divided data is discarded and a transition is made to a wait for divided data 801 (step 806). When the same divided data exists, instead of discarding the received divided data, the received divided data in the reception memory may be rewritten with the received divided data. If the same divided data does not exist, the received divided data is stored in the reception memory 105, and the original data identifier is notified to the data combination processing unit (step 807). The data combination processing unit searches the reception memory 105, searches for the divided data having the original data identifier received from the data reception processing unit, and combines the divided data in which the end flag is set in the order of the division number. If the divided data having the necessary division number does not exist in the reception memory, the processing is stopped there (step 808). If all the divided data from the beginning (first) to the end can be combined, the process ends because the data reception is completed. Otherwise, the process transits to the divided data reception wait 801 (step 809).

  9 to 11 show the results of storing the divided data in the reception memory 205. FIG. In the figure, the triangle mark indicates that the divided data has been discarded, the cross mark indicates that the divided data has not been received, and the no mark indicates that the divided data has been received and stored in the reception memory 205. .

  When data is transmitted as shown in FIG. 2, the data content written in the reception memory is stored in the reception memory 205 as shown in FIG. 9 when the duplex network is normal. The data transmitted for the second time is not saved. As shown in FIG. 9, the reception memory 205 receives all odd-numbered divided data for the first time from the network 300a and receives all even-numbered divided data for the first time from the network 300b. Therefore, the reception memory 205 can receive all the divided data even only for the first time.

  When one of the duplex networks, for example, the network 300b is abnormal and the divided data cannot be received from the network 300b, the divided data transmitted via the network 300a is stored in the reception memory 205 as shown in FIG. Is done. As shown in FIG. 10, the reception memory 205 receives all odd-numbered divided data for the first time and receives all even-numbered divided data for the second time from the network 300a. That is, the reception memory 205 can receive all the divided data from only the network 300a. Therefore, the reception memory 205 can receive all the divided data even when the network 300b is abnormal.

  As described above, in any case, all the divided data from division numbers 1 to N are transmitted to the node 2, and particularly when the duplex network is normal, all the divisions are performed in almost half the time as compared with the conventional technique. Data can be received and reconstruction of the original data can be started.

  Further, the data contents written in the reception memory when only some of the divided data cannot be received for some reason are, for example, the divided data of division number 2 and the division number N-2 transmitted for the first time shown in FIG. In the example in which the divided data is not received, the divided data of the division number 2 and the division number N-2 transmitted for the second time are stored in the reception memory. Therefore, all the divided data can be received as long as the transmission / reception abnormality of the same divided data does not occur in the first time and the second time.

  In this embodiment, in step 808, the data combination processing unit performs the data combination process using the process of storing the newly received divided data as a trigger. However, the combination process is performed only when a predetermined number of data is stored. It can also be implemented. This method has an effect of reducing the load by reducing unnecessary connection processing when the number of divisions is large.

  It is also possible to perform the combining process periodically by a timer. This method is effective when it is desired to perform reception processing with the highest priority and to perform the combination processing in the background when the processing load of the information processing apparatus is light.

  FIG. 7 is a diagram showing the configuration of the triple data communication system according to the second embodiment of the present invention. The triple data communication system includes two information processing apparatuses 100 'and 200', a LANa network 300a, a LANb network 300b, and a LANc network 300c. Here, although the configuration of two information processing devices is shown, a configuration in which three or more information processing devices are connected to the networks 300a, 300b, and 300c as in the first embodiment may be used.

  The difference between the information processing apparatuses 100 ′ and 200 ′ and the information processing apparatuses 100 and 200 of the first embodiment is that the LANc network 300c is added, the networks IFc 103c and 203c are added, and the transmission control units 102 ′ and 202 ′ are Data can be transmitted to three network IFs, and the reception processing units 104 ′ and 204 ′ can receive data from the three network IFs. Same as 1.

  FIG. 5 shows a rule for selecting a network of the transmission control processing unit in the case of a triple network. As in the case of the duplex network, as shown in the figure, whether the divided data to be transmitted is the first (first) (501), the number of transmissions of the divided data to be transmitted (502), the transmission target A network is selected (505) based on three conditions: which network the divided data immediately before the divided data is transmitted to (503).

  When the divided data to be transmitted is the first (first), the transmission network is selected depending on the number of transmissions. Specifically, the network 300a is selected for the first time, the network 300b for the second time, and the network 300c for the third time.

  When the divided data to be transmitted is other than the head, the network is selected based on the transmission destination network of the previous divided data. Specifically, the network 300b is used when the previous transmission destination is the network 300a, the network 300c is used when the previous transmission destination is the network 300b, and the network 300c is used when the previous transmission destination is the network 300c. Select 300a.

  As described above, the rules described above are determined so that all the divided data are always transmitted once to each network as in the first embodiment, and the intervals at which the same divided data is transmitted when viewed on all the networks are equal. ing.

  FIG. 12 shows data transmitted to each network of the triple data communication system. Since the network is tripled, divided data is allocated in the order of the networks 300a, 300b, and 300c, and data transmission is performed three times. In order to assign divided data without duplication for each network, the network to which the first data is assigned each time is changed. That is, when the first divided data is transmitted to the network 300a, the second divided data is transmitted to the network 300b, and the third divided data is transmitted to the network 300b. Further, the transmission control processing unit 102 transmits the same original data (the same divided data) three times as shown in FIG. At this time, the transmission control processing unit 102 starts the first transmission of data for the second time after completing the first transmission to the Nth transmission of the first divided data. It is preferable that the first transmission of the third portion of data is started after all the transmissions from the first to the Nth division data are completed. Further, in the case where the first divided data is transmitted in order from the first to the Nth, the transmission control processing unit 102 also transmits the second and third divided data in order from the first to the Nth. Is preferred. Further, in the transmission control processing unit 102, when the first first divided data is transmitted to the network 300a regardless of whether N is a multiple of 3, the second first divided data is transmitted. Is transmitted to the network 300b, and the first divided data for the third time is preferably transmitted to the network 300c. That is, regardless of whether N is a multiple of 3, the first first divided data network, the second first divided data network, and the third first divided data network. Are preferably different.

  In the case of the triple data communication system of this embodiment, when all the triple networks are normal, all the divided data can be received in approximately one-third of the time, and the reliability is ensured.

  In the above embodiment, the end of the original data is detected with the end flag of the divided data. However, even if the end of the original data is not clear as in the case of stream data, the end flag is attached for every fixed number of divided data. Then, the sequential data combining process can be performed.

  In the above embodiment, data transmission processing is performed the same number of times as the number of multiplexing, but data transmission may be performed a number of times larger than the number of multiplexing.

  Conversely, it is possible to perform data transmission processing that is less than the number of multiplexing. In that case, although the reliability is lowered, the transmission processing time can be shortened. For example, if the number of data transmissions is set to 2 in a triple data communication system, communication failure occurs when two of the three networks become abnormal simultaneously, but the transmission time can be reduced to two thirds. .

If If the probability of abnormality of each network and p, although the reliability of the case of data transmission times 3 times is 1-p ^3, the 1-3p 2 ⁺ 2p ³ if the data transmission count twice .

  The triple data communication system of the present embodiment can also be applied when a quadruple or higher network is connected. Assuming an N-duplex network from network 1 to N, in the first data transmission, the destination network 1 is the head and thereafter → 2 → 3 → 4 → ・ →→ N−1 → N → 1 → 2 ... Are transmitted in the order of up to the last divided data. In the second data transmission, transmission is performed in the order of → 3 → 4 →... → N−1 → N → 1 → 2 →... The data transmission may be performed with the network 4 at the top for the fourth time, and the network N at the top for the Nth time in order.

1 is a block diagram of a duplex data communication system according to a first embodiment of the present invention. The figure explaining the data transmission method in the duplex data communication system of Example 1 of this invention The figure which shows the flow of the data transmission process in Example 1 and Example 2 of this invention The figure which shows the rule which selects the network of the transmission control process part in Example 1 of this invention. The figure which shows the rule which selects the network of the transmission control process part in Example 2 of this invention. The figure which shows the structure of the division | segmentation data in Example 1 and 2 of this invention Configuration diagram of triple data communication system of embodiment 2 of the present invention The figure which shows the flow of the data reception process in Example 1 and Example 2 of this invention The figure explaining the receiving memory preservation | save content at the time of normalization of the duplex network in Example 1 of this invention FIG. 4 is a diagram for explaining the contents stored in the reception memory when one of the duplex networks in the first embodiment of the present invention is abnormal. FIG. 6 is a diagram for explaining the contents stored in the reception memory when the partial data reception is abnormal in the first embodiment of the present invention. The figure explaining the data transmission method in the triple data communication system of Example 2 of this invention

Explanation of symbols

100, 200 Information processing device 101, 201 Data division processing unit 102, 202 Transmission control processing unit 300a Network LANa
300b network LANb
103a, 203a Network IF connected to network LANa
Network IF connected to the network LANb 103b, 203b
104, 204 reception processing unit 105, 205 reception memory 106, 206 data combination processing unit

Claims (17)

In a multiplexed data communication system in which at least first and second information processing apparatuses are connected to M networks and perform M-duplex communication (M is an integer of 2 or more),
The first information processing apparatus includes a data division processing unit that divides original data to be transmitted from the beginning to the end for each predetermined size, and sequentially assigns the divided data obtained by the division to the M networks. A transmission control processing unit for transmitting one by one,
The second information processing apparatus receives the divided data transmitted from the M networks, discards the received divided data when it has already been received, and discards the received divided data when it has not been received. A multiplexed data communication system comprising: a reception processing unit that stores data; and a data combination processing unit that combines the received divided data to reconstruct the original data. The multiplexed data communication system according to claim 1.
The multiplexed data communication system, wherein the transmission control processing unit transmits M times so that the divided data is not duplicated and transmitted to the same network. The multiplexed data communication system according to claim 1.
The multiplexed data communication system, wherein the transmission control processing unit transmits an arbitrary number of times equal to or less than M so that the divided data is not duplicated and transmitted to the same network. The multiplexed data communication system according to any one of claims 1 to 3,
A multiplexed data communication system in which M = 2. The multiplexed data communication system according to claim 2 or 3,
The transmission control processing unit fixes the transmission order of the M, first to Mth networks and shifts the transmission network of the first divided data one by one so that the divided data is duplicated. A multiplexed data communication system characterized by being prevented from being transmitted to the same network. The multiplexed data communication system according to any one of claims 1 to 5,
The multiplexed data communication system is characterized in that the data combination processing unit is triggered by the saving of new divided data. The multiplexed data communication system according to claim 6.
The multiplexed data communication system is characterized in that the data combination processing unit is triggered by storing a predetermined number of new divided data. The multiplexed data communication system according to any one of claims 1 to 5,
The multiplexed data communication system, wherein the data combination processing unit is activated at predetermined intervals. The multiplexed data communication system according to claim 1.
The transmission control processing unit transmits the nth divided data via a network different from the network that transmitted the (n−1) th divided data (n is an integer of 2 or more),
The transmission control processing unit transmits the first divided data via a network different from the network that transmitted the (l-1) th divided data (l is an integer of 2 or more). A multiplexed data communication system. In a multiplexed data communication method in which M-duplex communication is performed using M networks between at least the first and second information processing apparatuses (M is an integer of 2 or more),
The first information processing apparatus divides the original data to be transmitted from the beginning to the end for each predetermined size, and sequentially transmits the divided data obtained by the division to the M networks one by one. And
When the second information processing apparatus receives the divided data transmitted from the M networks, discards the received divided data if it has already been received, and if the received divided data has not been received A multiplexed data communication method characterized by storing and recombining the stored divided data to reconstruct the original data. In a multiplexed data communication device that transmits data divided into N times to another multiplexed communication device via M networks (L, M, and N are integers of 2 or more),
A division processing unit for dividing the original data into N pieces of divided data;
A transmission control processing unit for transmitting N pieces of divided data L times,
The transmission control processing unit transmits the nth divided data via a network different from the network that transmitted the (n−1) th divided data (n is an integer of 2 or more and N or less),
The transmission control processing unit transmits the l-th divided data via a network different from the network that transmitted the (l-1) -th divided data (l is an integer of 2 or more and L or less). A multiplexed data communication apparatus characterized by the above. The multiplexed data communication device according to claim 11, wherein
If L = M = 2,
The transmission control processing unit
At the first time, the odd-numbered divided data is transmitted via the first network, the even-numbered divided data is transmitted via the second network,
A multiplexed data communication apparatus characterized by transmitting odd-numbered divided data via the second network and transmitting even-numbered divided data via the first network for the second time. The multiplexed data communication device according to claim 11, wherein
If L = M = 3,
The transmission control processing unit
At the first time, the (3Y-2) -th divided data is transmitted via the first network, the (3Y-1) -th divided data is transmitted via the second network, and the 3Y-th divided data is transmitted. Are transmitted via the third network (Y is an integer equal to or greater than 1),
In the second time, the (3Y-2) -th divided data is transmitted via the second network, the (3Y-1) -th divided data is transmitted via the third network, and the 3Y-th divided data is transmitted. Of the divided data via the first network,
At the third time, the (3Y-2) -th divided data is transmitted via the third network, the (3Y-1) -th divided data is transmitted via the first network, and the third Y-th divided data is transmitted. The multiplexed data communication apparatus is characterized by transmitting the divided data via the second network. In a multiplexed data communication method in which data divided into N pieces is transmitted L times to another multiplexed communication device via M networks (L, M, and N are integers of 2 or more),
Dividing the original data into N pieces of divided data;
Transmitting N divided data L times,
The transmitting step transmits the n-th divided data via a network different from the network that transmitted the (n−1) -th divided data (n is an integer of 2 or more and N or less), and Multiplexed data communication characterized in that the first divided data is transmitted via a network different from the network that transmitted the (l-1) th divided data (l is an integer of 2 to L). Method. In a multiplexed data communication apparatus that receives data divided into N pieces L times from another multiplexed communication apparatus via M networks (L, M, and N are integers of 2 or more),
A reception processing unit for receiving N pieces of divided data L times;
A combining processing unit that combines the N pieces of divided data to reconstruct the original data,
The reception processing unit receives the nth divided data via a network different from the network that transmitted the (n−1) th divided data (n is an integer of 2 or more and N or less),
The reception processing unit receives the first divided data via a network different from the network that transmitted the (1-1) th divided data (l is an integer of 2 or more and L or less). A multiplexed data communication device characterized. The multiplexed data communication device according to claim 15,
The reception processing unit sequentially stores the received divided data in a memory,
When the reception processing unit receives the same divided data as the divided data already stored in the memory, the received processing unit does not store the received divided data in the memory,
The multiplexed data communication apparatus, wherein the combining processing unit combines N divided data stored in the memory to reconstruct the original data. In a multiplexed data communication method of receiving data divided into N pieces L times from another multiplexed communication device via M networks (L, M, and N are integers of 2 or more),
Receiving N divided data L times;
Combining the N pieces of divided data to reconstruct the original data,
The receiving step receives the nth divided data via a network different from the network that transmitted the (n−1) th divided data (n is an integer of 2 or more and N or less), and Multiplexed data communication characterized in that the first divided data is received via a network different from the network that transmitted the (l-1) th divided data (l is an integer of 2 to L). Method.

Images