JP2015192270A - Memory capacity setting device, transmitter, receiver, communication system, transmission method, reception method and communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transmitter capable of effectively utilizing a memory capacity in a communication system for transmitting and receiving data in distribution.SOLUTION: A memory capacity setting device includes a memory management unit. When communication data is second communication data which is regulated to perform communication with a data size larger than divided data to be communicated by dividing first communication data, the memory management unit secures the memory capacity necessary for communication of the second communication data, in addition to a memory capacity allocated in advance for use in communication of the divided data.

Description

  The present invention relates to a memory capacity setting device, a transmission device, a reception device, a communication system, a transmission method, a reception method, and a communication method.

In a communication system including a transmission device and a reception device, when a line with a narrow band is used, particularly when a wireless line with a limited band is used, the data capacity that can be transmitted through one line is small. Therefore, in a communication system, there is a case where a data capacity that can be transmitted is secured by bundling a plurality of narrow-band lines into one line. That is, in a communication system, one data may be distributed over a plurality of lines and one data may be transmitted as a whole of the plurality of lines.
Patent Documents 1 to 3 describe, as related technologies, technologies related to communication in which data is distributed and transmitted / received in a communication system.

International Publication No. 2013/125177 JP 2010-258606 A JP 7-87084 A

  By the way, in a communication system in which data is transmitted and received in a distributed manner, the memory included in the transmission device and the reception device is desirably a memory having as small a capacity as possible in view of energy saving, resource saving, cost reduction, and the like. . However, at the time of maintenance, for example, it is necessary to temporarily transmit / receive data having a larger frame size than the normal frame size for dividing / transmitting data. Therefore, in general, a transmission apparatus and a reception apparatus in a communication system that transmits and receives data in a distributed manner include a large-capacity memory in order to cope with transmission / reception of data having a temporarily large frame size.

However, since data with a large frame size is temporarily transmitted and received at the time of maintenance or the like, there is a useless portion in the memory included in the transmission device and the reception device in the communication system in normal communication.
Therefore, there has been a demand for a technology that effectively uses the capacity of a memory in a communication system that distributes and transmits data.

  Therefore, an object of the present invention is to provide a memory capacity setting device, a transmission device, a reception device, a communication system, a transmission method, a reception method, and a communication method that can solve the above-described problems.

  In order to achieve the above object, the present invention is second communication data in which communication data is specified to perform communication having a data size larger than divided data for dividing first communication data for communication. In this case, the memory capacity setting device includes a memory management unit that secures a memory capacity necessary for communication of the second communication data in addition to a memory capacity previously allocated for use of the communication of the divided data.

  The present invention also includes a data dividing unit that divides the first communication data into divided data, a communication line distribution unit that distributes the divided data to a plurality of communication lines, a plurality of transmission units that transmit the divided data, A storage unit allocated to each transmission unit; and a memory management unit that manages a memory capacity of the storage unit, wherein the memory management unit communicates second communication data with a data size larger than the divided data. In this case, the memory device secures a larger memory capacity in the storage unit than when the divided data is transmitted.

  According to the present invention, a data assembling unit that assembles data from a plurality of communication data received from a transmission device can perform communication having a data size larger than divided data in which communication data divides and communicates first communication data. A memory management unit for allocating memory capacity based on whether or not the second communication data is defined, and changing the memory capacity of the receiving device to a capacity corresponding to the frame size of the second communication data When the instruction to receive is received from the transmitting apparatus, the receiving apparatus sets the memory capacity of the own apparatus to a capacity corresponding to the frame size of the second communication data.

  The present invention is also a communication system including a transmission device and a reception device, wherein the transmission device distributes the first communication data into divided data, and distributes the divided data to a plurality of communication lines. A communication line allocating unit; a plurality of transmitting units that transmit the divided data; a storage unit allocated to each transmitting unit; and a memory management unit that manages a memory capacity of the storage unit; When communicating the second communication data with a data size larger than the divided data, the unit secures a larger memory capacity in the storage unit than when transmitting the divided data. A data assembly unit that assembles data from a plurality of communication data received from a transmission device, and the communication data is larger in data size than the divided data that is transmitted by dividing the first communication data. A memory management unit for allocating a memory capacity based on whether or not the second communication data is defined to perform communication, and the memory capacity of the receiving device is set to a frame size of the second communication data. In the communication system, when an instruction to change the capacity according to is received from the transmitting apparatus, the memory capacity of the own apparatus is set to a capacity corresponding to the frame size of the second communication data.

  In the present invention, when the first communication data is divided into divided data and the second communication data is communicated with a data size larger than the divided data, a larger memory capacity than when the divided data is transmitted is provided. This is a transmission method that secures in a storage unit allocated to each transmission unit, distributes the divided data to a plurality of communication lines, and transmits the divided data.

  The present invention also provides that when the instruction to change the memory capacity of the receiving apparatus to a capacity corresponding to the frame size of the second communication data is received from the transmitting apparatus, the memory capacity of the own apparatus is set to the second communication data. This is a receiving method for assembling data from a plurality of communication data received from a transmitting device with a capacity corresponding to the frame size.

  Further, according to the present invention, when the transmission device divides the first communication data into divided data and communicates the second communication data with a data size larger than the divided data, the transmitting device transmits more than the divided data. A large memory capacity is secured in a storage unit allocated to each transmission unit, the divided data is distributed to a plurality of communication lines, the divided data is transmitted, and the receiving device is configured according to the frame size of the second communication data. When the instruction to change to the memory capacity is received from the transmitting device, the memory capacity of the own device is set to a capacity according to the frame size of the second communication data, and data is received from the plurality of communication data received from the transmitting device. It is a communication method to assemble.

  ADVANTAGE OF THE INVENTION According to this invention, the capacity | capacitance of memory can be used effectively in the communication system which distributes and transmits data.

It is a figure which shows an example of the minimum structure of the memory capacity setting apparatus 10 of this invention. It is a figure which shows an example of a structure of the communication system 1 provided with the memory capacity setting apparatus 10 by 1st embodiment of this invention. It is a figure which shows an example of the processing flow of the communication system 1 by 1st embodiment of this invention. It is a figure which shows an example of a structure of the communication system 1 provided with the memory capacity setting apparatus 10 by 2nd embodiment of this invention. It is a figure which shows an example of the processing flow of the communication system 1 by 2nd embodiment of this invention.

FIG. 1 is a diagram showing an example of a minimum configuration of a memory capacity setting device 10 according to the present invention.
The memory capacity setting device 10 of the present invention includes at least a memory management unit 101 as shown in FIG.

  The memory management unit 101 included in the memory capacity setting device 10 is provided with temporary traffic data (second communication data) in which communication data is defined to perform communication having a data size larger than divided data for communication by dividing the first communication data. In addition to the memory capacity previously allocated for the use of the divided data communication, the memory capacity necessary for the temporary traffic data communication is secured.

<First embodiment>
FIG. 2 is a diagram illustrating an example of the configuration of the communication system 1 including the memory capacity setting device 10 according to the first embodiment of the present invention.
As shown in FIG. 2, the communication system 1 according to the first embodiment includes a transmission device 2 and a reception device 3.

The transmission device 2 includes a device management unit 111, a data division unit 112, a communication line distribution unit 113, and transmission units 121a, 121b, 121c,.
The receiving device 3 includes a data assembling unit 211 and receiving units 221a, 221b, 221c,.
The transmission units 121a, 121b, 121c,... May be collectively referred to as the transmission unit 121. In addition, the receiving units 221a, 221b, 221c,... May be collectively referred to as the receiving unit 221.

The device management unit 111 included in the transmission device 2 includes a memory capacity setting device 10 and a storage unit 109.
The memory capacity setting device 10 includes a memory management unit 101 and a temporary traffic transmission management unit 102.
The memory management unit 101 included in the memory capacity setting device 10 is provided with temporary traffic data (second communication data) in which communication data is defined to perform communication having a data size larger than divided data for communication by dividing the first communication data. In addition to the memory capacity previously allocated for the use of the divided data communication, the memory capacity necessary for the temporary traffic data communication is secured. When the communication data is temporary traffic data, the memory management unit 101 sets the memory capacity according to the frame size of the temporary traffic data. The memory management unit 101 sets the memory capacity according to the frame size of the divided data when the communication data is not temporary traffic data.
The storage unit 109 is a storage unit that stores various data necessary for processing of the transmission device 2 such as maintenance data that is temporary traffic data.

  The temporary traffic transmission management unit 102 determines whether or not the communication data is temporary traffic data that is prescribed to perform communication having a data size larger than the divided data for dividing and communicating the first communication data. . When the temporary traffic transmission management unit 102 determines that the communication data is temporary traffic data, the memory management unit 101 sets the memory capacity to a capacity corresponding to the frame size of the temporary traffic data, and then converts the temporary traffic data to the communication line allocation. Output to the dividing unit 113.

The data dividing unit 112 divides communication data.
The communication line distribution unit 113 distributes the communication data divided by the data dividing unit 112 to a communication line to be transmitted from a plurality of communication lines.
The transmission unit 121 transmits the communication data distributed to each communication line to the reception device 3.

The data assembling unit 211 included in the receiving device 3 assembles (restores) data from a plurality of communication data received from the transmitting device.
The receiving unit 221 receives communication data of each communication line.

2 is wireless communication, the device management unit 111, the data division unit 112, and the communication line distribution unit 113 are IDUs (In-Door Units) 11 in the transmission device 2. The transmission unit 121 is an ODU (Out-Door Unit) 12.
When the communication in FIG. 2 is wireless communication, the data assembling unit 211 is an IDU (In-Door Unit) 21 in the receiving device 3. The receiving unit 221 is an ODU (Out-Door Unit) 22.

FIG. 3 is a diagram showing an example of a processing flow of the communication system 1 according to the first embodiment of the present invention.
Next, processing of the communication system 1 according to the first embodiment will be described with reference to FIG.
Here, the communication system 1 according to the first embodiment will be described with reference to processing of the communication system 1 having a traffic bonding function. The traffic bonding function means that the transmission device 2 divides the communication data into a plurality of (distributed) transmissions to the reception device 3, and the reception device 3 converts the original communication data from the plurality of divided data received. It is a function to assemble. In the initial state, the memory capacity allocated to each communication line of the transmission device 2 is assumed to be a capacity corresponding to the frame size of the divided data. In the initial state, it is assumed that the memory capacity allocated to the data assembling unit 211 of the receiving device 3 is the minimum necessary capacity based on the divided data size. The present invention is a technique effective for both wireless communication and wired communication. Further, the present invention does not limit the type of communication. For example, wireless communication may be communication using Wi-Fi (registered trademark) or a 3G / 4G line. The wired communication may be communication using Ethernet (registered trademark) or an optical line. However, the first embodiment of the present invention shows an example in which the data dividing unit 112 inputs communication data input from the Ethernet (registered trademark) 1. In the wireless communication, the data dividing unit 112 always divides and assembles communication data input from the Ethernet 1 using the traffic bonding function regardless of the presence or absence of temporary traffic data.

  The temporary traffic transmission management unit 102 included in the device management unit 111 of the transmission device 2 is defined to perform communication having a data size larger than the divided data in which the communication data is divided and communicated with the first communication data. It is determined whether it is traffic data (step S1). For example, the temporary traffic transmission management unit 102 determines that the communication data is temporary traffic data when detecting a setting for starting maintenance performed by a maintenance person.

  When the temporary traffic transmission management unit 102 determines that the communication data is temporary traffic data (step S1, YES), the temporary traffic transmission management unit 102 displays a temporary traffic transmission start signal indicating that the communication data is determined to be temporary traffic data. 101.

  When the temporary traffic transmission management signal is input from the temporary traffic transmission management unit 102, the memory management unit 101 increases (increases) the memory capacity in the communication line distribution unit 113 and the transmission unit 121 according to the frame size of the temporary traffic data. Assign (step S2). For example, the memory management unit 101 allocates a memory capacity allocated to a communication line not used for transmission of temporary traffic data to a memory capacity of a communication line used for communication of temporary traffic data. Then, the memory management unit 101 outputs a memory capacity setting completion signal indicating completion of memory capacity allocation to the temporary traffic transmission management unit 102.

When receiving the memory capacity setting completion signal from the memory management unit 101, the temporary traffic transmission management unit 102 outputs, for example, temporary traffic data (in this case, maintenance data) input from the storage unit 109 to the communication line distribution unit 113.
When the temporary traffic data is input from the temporary traffic transmission management unit 102, the communication line distribution unit 113 receives the input temporary traffic data from the communication line transmission unit 121 to which the memory capacity is allocated according to the frame size of the temporary traffic data. It outputs to the transmission part 121c. The communication line to which the memory capacity is allocated according to the frame size of the temporary traffic data may be a specific communication line determined in advance. Alternatively, a communication line may be selected according to the communication status, and a memory capacity corresponding to the frame size of temporary traffic data may be assigned to the line.

  When the transmission unit 121c receives the temporary traffic data from the communication line distribution unit 113, the transmission unit 121c transmits the input temporary traffic data to the reception device 3 (step S3). When the transmission unit 121c completes the transmission of the temporary traffic data to the receiving device 3 (step S4), the transmission unit 121c outputs a temporary traffic transmission completion signal indicating the completion of the transmission of the temporary traffic data to the memory management unit 101. For example, when the transmission unit 121c detects a flag indicating a final data frame at a predetermined bit in the data frame of the temporary traffic data, the transmission unit 121c determines that the transmission of the temporary traffic data to the reception device 3 is completed. .

  When the temporary traffic transmission completion signal is input from the transmission unit 121c, the memory management unit 101 allocates the memory capacity in the communication line distribution unit 113 and the transmission unit 121 to (small) capacity allocation according to the frame size of the divided data. Return (step S5). For example, the memory management unit 101 returns to the normal memory capacity for performing communication using the traffic bonding function.

  If the temporary traffic transmission management unit 102 determines that the communication data is not temporary traffic data (NO in step S1), the temporary traffic transmission management unit 102 performs the process of step S1 with a memory capacity allocated according to the frame size of the divided data. At a timing, for example, after a predetermined time has elapsed, it is performed again.

When receiving the temporary traffic data (in this case, maintenance data) from the transmission device 2, the reception device 3 operates according to the application program and the received maintenance data.
When the receiving device 3 receives a plurality of divided data from the transmitting device 2 via each communication line, the data assembling unit 211 included in the receiving device 3 converts the information included in the header of each divided data into information necessary for assembling the data. Based on this, data is assembled by traffic bonding function.
In the first embodiment of the present invention, the transmission unit 121c transmits temporary traffic data, and the reception unit 221c receives temporary traffic data from the transmission unit 121c. However, the present invention is not limited to this.

The process of the communication system 1 including the memory capacity setting device 10 according to the first embodiment of the present invention has been described above. According to the communication system 1 including the memory capacity setting device 10 described above, when the memory capacity corresponding to the frame size of the divided data is allocated and it is determined that the communication data is temporary traffic data, the frame size of the temporary traffic data is set. Allocate appropriate memory capacity. When the communication transmission of the temporary traffic data is completed, the memory capacity is allocated again according to the frame size of the divided data.
In this way, in a communication system having a traffic bonding function for transmitting and receiving data in a distributed manner, the memory capacity in each communication line is not required to be large according to the frame size of the temporary traffic data. It can be used effectively.
In addition, since the memory capacity in the transmission device 2 is allocated according to the frame size of the divided data, it is possible to reduce a useless portion where data is not allocated in the frame, and when the communication line speed is reduced in the transmission device 2 The amount of communication data staying in the network can be reduced. The memory capacity in the receiving device 3 only needs to be able to correspond to the amount of communication data staying in the transmitting device 2, and as a result, the memory capacity in the receiving device 3 can also be reduced.

<Second Embodiment>
FIG. 4 is a diagram illustrating an example of a configuration of the communication system 1 including the memory capacity setting device 10 according to the second embodiment of the present invention.
As shown in FIG. 4, the communication system 1 according to the second embodiment includes a transmission / reception device 2a corresponding to the transmission device 2 included in the communication system 1 according to the first embodiment, and a reception device 3 according to the first embodiment. And a corresponding transmitting / receiving device 3a.

The transmission / reception device 2a according to the second embodiment includes a transmission / reception unit 122 instead of the transmission unit 121c included in the transmission device 2 according to the first embodiment.
The transmission / reception device 3a according to the second embodiment includes a transmission / reception unit 222 instead of the reception unit 221c included in the reception device 3 according to the first embodiment. The receiving device 3 includes a memory capacity setting device 10a including a memory management unit 101a.

The transmission / reception unit 122 transmits communication data to the reception device 3 via the communication line. In addition, the transmission / reception unit 122 receives communication data from the reception device 3 via a communication line.
The transmission / reception unit 222 receives communication data from the transmission device 2 via a communication line. Further, the transmission / reception unit 222 transmits communication data to the transmission device 2 via a communication line.

  Whether the memory management unit 101a included in the memory capacity setting device 10a is temporary traffic data in which the communication data is defined to perform communication having a data size larger than the divided data for dividing and communicating the first communication data The memory capacity is allocated based on whether or not. When the communication data is temporary traffic data, the memory management unit 101a sets the memory capacity to a capacity corresponding to the frame size of the temporary traffic data. The memory management unit 101a sets the memory capacity according to the frame size of the divided data when the communication data is not temporary traffic data.

FIG. 5 is a diagram showing an example of a processing flow of the communication system 1 according to the second embodiment of the present invention.
Next, processing of the communication system 1 according to the second embodiment will be described with reference to FIG.
Here, the processing of the communication system 1 will be described assuming that the communication system 1 according to the second embodiment has a traffic bonding function and performs wireless communication. In the initial state, the memory capacity allocated to each communication line of the transmission / reception device 2a is assumed to be a capacity corresponding to the frame size of the divided data. In the initial state, the memory capacity allocated to the data assembling unit 211 of the transmission / reception device 3a is assumed to be the minimum necessary capacity based on the divided data size.

  Here, steps S11 to S13 which are processing steps different from the processing flow of the communication system 1 including the memory capacity setting device 10 according to the first embodiment shown in FIG. 3 will be described.

When the memory management unit 101 receives a temporary traffic transmission start signal from the temporary traffic transmission management unit 102, the memory management unit 101 performs the process of step S2 and outputs the input temporary traffic transmission start signal to the ODU 12.
When the ODU 12 receives the temporary traffic transmission start signal from the memory management unit 101, the transmission / reception unit 122 included in the ODU 12 transmits the temporary traffic transmission start signal to the transmission / reception device 3a (step S11).

When receiving the temporary traffic transmission start signal from the transmission / reception device 2a, the transmission / reception unit 222 included in the transmission / reception device 3a outputs the received temporary traffic transmission start signal to the memory management unit 101a.
When receiving the temporary traffic transmission start signal from the transmission / reception unit 222, the memory management unit 101a allocates (larger) the memory capacity in the data assembling unit 211 in accordance with the frame size of the temporary traffic data (step S12). For example, a memory capacity corresponding to the frame size of the temporary traffic data is allocated to a predetermined specific communication line. Further, for example, a communication line is selected according to the communication status, and a memory capacity corresponding to the frame size of the temporary traffic data is assigned to the line. When the transmission / reception device 3a shares a memory with another device, the memory capacity allocated to the other device is temporarily allocated to the transmission / reception device 3a. Then, the memory management unit 101a transmits an assembly memory capacity setting completion signal indicating completion of memory capacity allocation to the transmission / reception device 2a via the transmission / reception unit 222 (step S13).

When the transmission / reception unit 122 included in the transmission / reception device 2a receives the assembly memory capacity setting completion signal from the transmission / reception device 3a, the transmission / reception device 2a outputs the received assembly memory capacity setting completion signal to the temporary traffic transmission management unit 102.
When the temporary traffic transmission management unit 102 receives the memory capacity setting completion signal from the memory management unit 101 and the assembly memory capacity setting completion signal from the transmission / reception unit 122, the temporary traffic transmission management unit 102 outputs the temporary traffic data to the communication line distribution unit 113.

  When the temporary traffic data is input from the temporary traffic transmission management unit 102, the communication line distribution unit 113 receives the input temporary traffic data from the communication line transmission unit 121 to which the memory capacity is allocated according to the frame size of the temporary traffic data. It outputs to the transmission part 121c. Then, the process continues to step S3.

When receiving temporary traffic data (in this case, maintenance data) from the transmission / reception device 2a, the transmission / reception device 3a operates in accordance with the application program and the received maintenance data.
Following the process of step S <b> 4, the transmission / reception unit 122 outputs a temporary traffic transmission completion signal indicating completion of transmission of temporary traffic data to the memory management unit 101. Further, the transmission / reception unit 122 transmits a temporary traffic transmission completion signal to the transmission / reception device 3a (step S14).

  When receiving the temporary traffic transmission completion signal from the transmission / reception device 2a, the transmission / reception unit 222 provided in the transmission / reception device 3a outputs the received temporary traffic transmission completion signal to the memory management unit 101a. When the temporary traffic transmission completion signal is input from the transmission / reception unit 222, the memory management unit 101a returns the memory capacity in the data assembly unit 211 to (small) capacity allocation according to the frame size of the divided data (step S15).

  In the second embodiment of the present invention, the transmission / reception device 2a includes a transmission / reception unit 122 instead of the transmission unit 121c according to the first embodiment, and the transmission / reception device 3a is replaced with the reception unit 221c of the first embodiment. In the above description, the transmitter / receiver 222 is provided. However, the present invention is not limited to this. The transmission / reception device 2a may include one transmission / reception unit instead of one transmission unit in the first embodiment. The transmission / reception device 2a may include a plurality of transmission / reception units instead of the plurality of transmission units including all of the first embodiment. Further, the transmission / reception device 3a may include one transmission / reception unit instead of one reception unit in the first embodiment. The transmission / reception device 3a may include a plurality of transmission / reception units instead of the plurality of reception units including all in the first embodiment.

The process of the communication system 1 including the memory capacity setting device 10 according to the second embodiment of the present invention has been described above. According to the communication system 1 including the memory capacity setting device 10 described above, when the memory capacity in the communication system 1 is allocated to the memory capacity according to the frame size of the divided data and the communication data is determined to be temporary traffic data, Allocate memory capacity according to the frame size of temporary traffic data.
In this way, in a communication system having a traffic bonding function for transmitting and receiving data in a distributed manner, the memory capacity in each communication line is not required to be large according to the frame size of the temporary traffic data. It can be used effectively.
In addition, since the memory capacity in the transmission / reception device 2a is allocated according to the frame size of the divided data, it is possible to reduce a useless portion where data is not allocated in the frame, and the communication line speed is reduced in the transmission / reception device 2a. The amount of communication data staying in the network can be reduced. The memory capacity in the transmission / reception device 3a only needs to correspond to the amount of communication data retained in the transmission / reception device 2a. As a result, the memory capacity in the transmission / reception device 3a can also be reduced. Further, when the transmission / reception device 2a transmits temporary traffic data to the transmission / reception device 3a, the memory capacity of the transmission / reception device 3a is allocated according to the frame size of the temporary traffic data, thereby reducing the probability of occurrence of memory shortage in the transmission / reception device 3a. can do.

  In the above-described embodiment, an example has been described in which temporary traffic data communicates via a specific line (a line passing through the transmission units 121c and 221c or specific transmission / reception units 122 and 222). However, the embodiment of the present invention is not limited to the case where temporary traffic data is communicated via a specific line. For example, in each embodiment of the present invention, temporary traffic data may be communicated via a line passing through an arbitrary transmission unit / transmission / reception unit. In that case, the memory capacity required for the line to be used is allocated.

  In the above-described embodiment, the wired communication has been described using Ethernet as an example. However, the embodiment of the present invention is not limited to the case where the wired communication is Ethernet. For example, the wired communication in each embodiment of the present invention may be various networks such as an optical line.

  In the above-described embodiment, the case of performing wireless communication has been described as an example. However, the present invention is not limited to wireless communication, and wired communication may be used.

  Note that the storage unit and the memory in the present invention may be provided anywhere as long as appropriate information is transmitted and received. A plurality of storage units and memories may exist in a range in which appropriate information is transmitted and received, and data may be distributed and stored.

  In the processing flow according to the embodiment of the present invention, the order of processing may be changed within a range where appropriate processing is performed.

  In addition, although embodiment of this invention was described, the above-mentioned transmitter 2, the receiver 3, the transmission / reception apparatus 2a, and the transmission / reception apparatus 3a have a computer system inside. The process described above is stored in a computer-readable recording medium in the form of a program, and the above process is performed by the computer reading and executing this program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. Various omissions, replacements, and changes can be made without departing from the scope of the invention.

  In addition, although a part or all of said embodiment can be described also for the following additional remarks, it is not restricted to the following.

(Supplementary note 1) When the communication data is second communication data that is prescribed to perform communication having a data size larger than that of the divided data that is transmitted by dividing the first communication data, the communication of the divided data A memory capacity setting device comprising: a memory management unit that secures a memory capacity necessary for communication of the second communication data in addition to a memory capacity previously allocated to the use of the second communication data.

(Supplementary note 2) When the communication data is the second communication data, the memory management unit sets the memory capacity according to the frame size of the second communication data. apparatus.

(Supplementary Note 3) The memory management unit sets the memory capacity according to the frame size of the divided data when the communication data is not the second communication data. apparatus.

(Supplementary note 4) The memory capacity setting device according to any one of Supplementary note 1 to Supplementary note 3, further comprising: a transmission management unit that determines whether or not communication data is the second communication data.

(Supplementary note 5) The memory capacity setting device according to any one of supplementary notes 1 to 4, wherein the communication data is packet communication data.

(Supplementary note 6) The memory capacity setting device according to any one of supplementary notes 1 to 5, wherein the communication data is data of wireless communication.

(Supplementary note 7) The memory capacity setting device according to any one of supplementary notes 1 to 6,
A data division unit for dividing communication data;
A transmission device comprising: a communication line distribution unit that distributes divided communication data to communication lines that transmit the communication data.

(Supplementary note 8) When the communication data is the second communication data, a memory capacity change signal for instructing to change the memory capacity of the receiving apparatus to a capacity corresponding to the frame size of the second communication data The transmitting apparatus according to appendix 7, further comprising: a transmitting unit that transmits to

(Supplementary note 9) The transmission device according to supplementary note 7 or supplementary note 8, wherein the communication data is packet communication data.

(Supplementary note 10) The transmission device according to any one of supplementary note 7 to supplementary note 9, wherein the communication data is wireless communication data.

(Supplementary Note 11) Based on whether or not the communication data is second communication data that is specified to perform communication having a data size larger than that of the divided data to be transmitted by dividing the first communication data, the memory A receiving device comprising a memory management unit for allocating capacity.

(Supplementary Note 12) When a memory capacity change signal instructing to change the memory capacity of the receiving apparatus to a capacity corresponding to the frame size of the second communication data is received, the memory capacity of the own apparatus is set to the second communication The receiving device according to attachment 11, wherein the capacity is in accordance with a data frame size.

(Additional remark 13) A receiving apparatus provided with the data assembly part which assembles data from the some communication data received from the transmitter.

(Supplementary note 14) The receiving device according to any one of supplementary note 11 to supplementary note 13, wherein the communication data is packet communication data.

(Supplementary note 15) The reception device according to any one of Supplementary note 11 to Supplementary note 14, wherein the communication data is data of wireless communication.

(Supplementary Note 16) The transmission device according to any one of Supplementary Note 7 to Supplementary Note 10,
The receiving device according to any one of appendix 11 to appendix 15,
A communication system comprising:

  (Supplementary Note 17) When the communication data is second communication data that is specified to perform communication having a data size larger than that of the divided data that is transmitted by dividing the first communication data, the communication of the divided data A memory capacity setting method for securing a memory capacity necessary for communication of the second communication data in addition to a memory capacity previously allocated to the use of the second communication data.

(Supplementary Note 18) A computer of a memory capacity setting device
When the communication data is the second communication data that is specified to perform communication having a data size larger than the divided data for dividing the first communication data and communicating, the communication of the divided data is used in advance. A program that functions as a memory management unit that secures a memory capacity necessary for communication of the second communication data in addition to the allocated memory capacity.

(Supplementary note 19) a data dividing unit for dividing the first communication data into divided data;
A communication line distribution unit that distributes the divided data to a plurality of communication lines;
A plurality of transmission units for transmitting the divided data;
A storage unit assigned to each transmission unit;
A memory management unit for managing the memory capacity of the storage unit,
The memory management unit secures a larger memory capacity in the storage unit than when transmitting the divided data when communicating the second communication data with a data size larger than the divided data. Transmitting device.

(Supplementary note 20) A transmitting unit that transmits an instruction to change the memory capacity of the receiving device to a capacity corresponding to the frame size of the second communication data when the communication data is the second communication data. Item 20. The transmission device according to appendix 19.

(Supplementary note 21) a data assembling unit that assembles data from a plurality of communication data received from a transmission device;
Memory to which memory capacity is allocated based on whether or not the communication data is second communication data that is specified to perform communication having a data size larger than the divided data that is transmitted by dividing the first communication data With a management department,
When an instruction to change the memory capacity of the receiving device to the capacity corresponding to the frame size of the second communication data is received from the transmitting device, the memory capacity of the own device depends on the frame size of the second communication data. Receiving device with a certain capacity.

(Supplementary note 22) A communication system including a transmission device and a reception device,
The transmitter is
A data dividing unit for dividing the first communication data into divided data;
A communication line distribution unit that distributes the divided data to a plurality of communication lines;
A plurality of transmission units for transmitting the divided data;
A storage unit assigned to each transmission unit;
A memory management unit for managing the memory capacity of the storage unit,
When the memory management unit communicates the second communication data with a data size larger than the divided data, the memory management unit secures a larger memory capacity than when the divided data is transmitted to the storage unit,
The receiving device is:
A data assembly unit that assembles data from a plurality of communication data received from the transmission device;
Memory to which memory capacity is allocated based on whether or not the communication data is second communication data that is specified to perform communication having a data size larger than the divided data that is transmitted by dividing the first communication data With a management department,
When an instruction to change the memory capacity of the receiving device to a capacity corresponding to the frame size of the second communication data is received from the transmitting device, the memory capacity of the own device is set to the frame size of the second communication data. A communication system with a corresponding capacity.

(Supplementary Note 23) The first communication data is divided into divided data,
When communicating the second communication data with a data size larger than the divided data, ensure a larger memory capacity in the storage unit assigned to each transmission unit than when transmitting the divided data,
The divided data is distributed to a plurality of communication lines,
A transmission method for transmitting the divided data.

(Supplementary Note 24) When an instruction to change the memory capacity of the receiving apparatus to a capacity corresponding to the frame size of the second communication data is received from the transmitting apparatus, the memory capacity of the own apparatus is changed to the frame size of the second communication data. According to the capacity,
A receiving method for assembling data from a plurality of communication data received from the transmitting device.

(Supplementary Note 25)
Divide the first communication data into divided data,
When communicating the second communication data with a data size larger than the divided data, ensure a larger memory capacity in the storage unit assigned to each transmission unit than when transmitting the divided data,
The divided data is distributed to a plurality of communication lines,
Sending the split data,
The receiving device
When an instruction to change to the memory capacity corresponding to the frame size of the second communication data is received from the transmission device, the memory capacity of the own device is set to a capacity corresponding to the frame size of the second communication data,
A communication method for assembling data from a plurality of communication data received from a transmission device.

DESCRIPTION OF SYMBOLS 1 ... Communication system 2 ... Transmission apparatus 2a, 3a ... Transmission / reception apparatus 3 ... Reception apparatus 10, 10a ... Memory capacity setting apparatus 11, 21 ... IDU (In-Door Unit)
12, 22 ... ODU (Out-Door Unit)
101, 101a ... Memory management unit 102 ... Temporary traffic transmission management unit 109 ... Storage unit 111 ... Device management unit 112 ... Data division unit 113 ... Communication line distribution unit 121, 121a 121b, 121c, transmission unit 122, 222, transmission / reception unit 211, data assembly unit 221, 221a, 221b, 221c, reception unit.

Claims (10)

When the communication data is the second communication data that is specified to perform communication having a data size larger than the divided data for dividing the first communication data and communicating, the communication of the divided data is used in advance. A memory capacity setting device comprising: a memory management unit that secures a memory capacity necessary for communication of the second communication data in addition to the allocated memory capacity. The memory capacity setting device according to claim 1, wherein when the communication data is the second communication data, the memory management unit sets a memory capacity according to a frame size of the second communication data. The memory capacity setting device according to claim 1, wherein the communication data is wireless communication data. A data dividing unit for dividing the first communication data into divided data;
A communication line distribution unit that distributes the divided data to a plurality of communication lines;
A plurality of transmission units for transmitting the divided data;
A storage unit assigned to each transmission unit;
A memory management unit for managing the memory capacity of the storage unit,
The memory management unit, when communicating the second communication data with a data size larger than the divided data, secures a larger memory capacity in the storage unit than when the divided data is transmitted. Transmitting device. A transmission unit that transmits, to the receiving device, an instruction to change a memory capacity of the receiving device to a capacity corresponding to a frame size of the second communication data when the communication data is the second communication data. 4. The transmission device according to 4. A data assembly unit that assembles data from a plurality of communication data received from a transmission device;
Memory to which memory capacity is allocated based on whether or not the communication data is second communication data that is specified to perform communication having a data size larger than the divided data that is transmitted by dividing the first communication data With a management department,
When an instruction to change the memory capacity of the receiving device to the capacity corresponding to the frame size of the second communication data is received from the transmitting device, the memory capacity of the own device depends on the frame size of the second communication data. Receiving device with a certain capacity. A communication system comprising a transmission device and a reception device,
The transmitter is
A data dividing unit for dividing the first communication data into divided data;
A communication line distribution unit that distributes the divided data to a plurality of communication lines;
A plurality of transmission units for transmitting the divided data;
A storage unit assigned to each transmission unit;
A memory management unit for managing the memory capacity of the storage unit,
When the memory management unit communicates the second communication data with a data size larger than the divided data, the memory management unit secures a larger memory capacity than when the divided data is transmitted to the storage unit,
The receiving device is:
A data assembly unit that assembles data from a plurality of communication data received from the transmission device;
Memory to which memory capacity is allocated based on whether or not the communication data is second communication data that is specified to perform communication having a data size larger than the divided data that is transmitted by dividing the first communication data With a management department,
When an instruction to change the memory capacity of the receiving device to a capacity corresponding to the frame size of the second communication data is received from the transmitting device, the memory capacity of the own device is set to the frame size of the second communication data. A communication system with a corresponding capacity. Divide the first communication data into divided data,
When communicating the second communication data with a data size larger than the divided data, ensure a larger memory capacity in the storage unit assigned to each transmission unit than when transmitting the divided data,
The divided data is distributed to a plurality of communication lines,
A transmission method for transmitting the divided data. When an instruction to change the memory capacity of the receiving device to a capacity corresponding to the frame size of the second communication data is received from the transmitting device, the memory capacity of the own device is a capacity corresponding to the frame size of the second communication data. age,
A receiving method for assembling data from a plurality of communication data received from the transmitting device. The transmitter is
Divide the first communication data into divided data,
When communicating the second communication data with a data size larger than the divided data, ensure a larger memory capacity in the storage unit assigned to each transmission unit than when transmitting the divided data,
The divided data is distributed to a plurality of communication lines,
Sending the split data,
The receiving device
When an instruction to change to the memory capacity corresponding to the frame size of the second communication data is received from the transmission device, the memory capacity of the own device is set to a capacity corresponding to the frame size of the second communication data,
A communication method for assembling data from a plurality of communication data received from a transmission device.

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