CN117729161A - Communication control device, communication control method, and communication control program - Google Patents

Abstract

The communication control device of the present invention controls the priority order of communication for each communication device without performing a plurality of settings related to communication control. A communication control device (100) is a communication control device for controlling communication of information in a control system of a device, and determines a transmission destination and a transmission source of a packet based on information related to communication control included in the packet of the communication, assigns a predetermined queue to the packet based on a determination result of a determination unit (132), and sets a transmission schedule of the packet based on predetermined conditions included in the queue.

Description

Communication control device, communication control method, and communication control program

Technical Field

The invention relates to a communication control device, a communication control method, and a communication control program.

Background

A system is known in which, in a control network of a device such as a building, the state of each device such as an air conditioner, electricity, or illumination, or a control setting is monitored. Equipment types provided in these buildings and the like are provided by various manufacturers. Therefore, a control network for a building or the like may be a network configuration in which subsystems of respective manufacturers are combined.

In the network configuration in which the subsystems of the respective manufacturers are combined, when the devices of the respective manufacturers communicate, communication of the other manufacturers may not be possible due to the influence of communication of the certain manufacturer (for example, ethernet (registered trademark) communication). Thus, as the prior art, a method of controlling communication by using a technique of QoS (Quality of Service) or the like is provided.

For example, the following techniques are known: when the transmission amount of a frame is measured in the switching hub and exceeds a reference value, transmission is started from a frame waiting in a queue having a high priority (for example, refer to patent document 1). In addition, the following techniques are known: when setting parameters of a transmission queue in an ethernet switch, a delay and a loss of a communication with a high priority assigned to a queue with a high priority are suppressed, and parameters satisfying a predetermined quality target are set to control the order of performing the communication and the traffic volume (for example, refer to patent document 2).

[ Prior Art literature ]

[ patent literature ]

[ patent document 1] Japanese patent laid-open No. 2012-120015

[ patent document 2] Japanese patent laid-open No. 2021-182694

Disclosure of Invention

However, in the related art, in order to control the priority order of communication for each communication apparatus, there is a problem that a plurality of settings related to communication control are required.

For example, in the related art, there are a plurality of setting items such as classification of communications, priority setting of the classified communications, and schedule of communications. In order to perform the plurality of settings, if the person does not have knowledge about a plurality of setting items, knowledge about a network, knowledge about communication contents in the network, or the like, it may be difficult to perform settings related to communication control.

Means for solving the problems

In order to solve the above problems and achieve the object, a communication control device according to the present invention is a communication control device for controlling information communication in a control system of a device, the communication control device comprising: a determination unit that determines a transmission destination and a transmission source of a packet of the information communication based on information related to communication control included in the packet; an allocation unit that allocates a predetermined queue to the packet according to a determination result of the determination unit; and a setting unit that sets a transmission schedule of the packet according to a predetermined condition included in the queue.

[ Effect of the invention ]

According to the present invention, there is an effect that a plurality of settings related to communication control do not need to be performed for control of the priority order of communication for each communication device.

Drawings

Fig. 1 is a diagram showing an example of an outline of communication control according to the embodiment.

Fig. 2 is a diagram showing an example of the device configuration of the communication control device according to the embodiment.

Fig. 3 is a graph showing an example of information stored in the queue allocation condition storage section according to the embodiment.

Fig. 4 is a graph showing an example of information stored in the transmission condition storage unit according to the embodiment.

Fig. 5 is a flowchart of a communication control method pertaining to an embodiment.

Fig. 6 is a diagram showing an example of a communication control method according to the conventional method.

Fig. 7 is a diagram showing an example of a communication control method according to the embodiment.

Fig. 8 is a diagram showing an example of a communication control method according to the conventional method.

Fig. 9 is a diagram showing an example of a communication control method according to the embodiment.

Fig. 10 is a hardware configuration diagram showing an example of a computer that realizes the functions of the communication control device.

Detailed Description

Embodiments (hereinafter referred to as "embodiments") will be described with reference to the drawings. In the following description, common components are denoted by the same reference numerals, and overlapping description is omitted. The description of the present embodiment is not limited to the communication control device, the communication control method, and the communication control program of the present invention.

[1. Overview of communication control method ]

The communication control device 100 according to the present embodiment is a communication control device for controlling information communication in a control system of a device, and determines a transmission destination and a transmission source of a packet using information related to communication control included in the packet of the information communication. Next, the communication control device 100 allocates a predetermined queue corresponding to the transmission destination and the transmission source of the packet based on the determination result. Then, the communication control device 100 sets a transmission schedule according to the transmission priority order of the packets included in the queue, and sequentially transmits the packets to the predetermined transmission destination.

Next, an outline of communication control performed by the communication control apparatus 100 will be described with reference to fig. 1. In the present embodiment, for the purpose of distinguishing the equipment of each manufacturer, the label is "own company equipment" and "other company equipment", for example, and these are collectively described below. The expressions "own company device" and "other company devices" are merely expressions as examples, and the present embodiment is not limited thereto.

In the description of the present embodiment, each of the queues is "a communication in which the storage transmission destination is the OUI of the own company device and the transmission source is the OUI of the own company device", "a communication in which the storage transmission destination is the OUI of the other company device", a communication in which the storage transmission destination is the OUI of the other company device, a communication in which the transmission source is the OUI of the own company device "," a communication in which the storage transmission destination is the OUI of the other company device, and a communication in which the transmission source is the OUI of the other company device ", respectively.

The priority of the communication in each queue is set to be the highest priority of the communication between the own company devices, and the transmission destination or transmission source is the highest order of the communication between the own company and the other company devices, and the communication between the other company devices is the lowest. In the present embodiment, the "priority 1: the transmission destination is the own company device, the transmission source is the own company device "," priority 2: the transmission destination is the own company device, the transmission source is other company devices, "" priority 3: the transmission destination is other company equipment, the transmission source is own company equipment, and the priority is 4: the sending destination is other company equipment, and the sending source is other company equipment. The priority may be changed by setting.

In fig. 1, the network is configured such that the transmission source is the own company device 10A and the other company device 20A, and the transmission destination is the own company device 10B and the other company device 20B. In the network of fig. 1, the own company device 10A communicates with the own company device 10B, and the other company device 20A communicates with the other company device 20B. The combination of the transmission source and the transmission destination is only an example, and other combinations may be set.

First, the own company device 10A sets the transmission destination as the own company device 10B, and the other company device 20A sets the transmission destination as the other company device 20B, and transmits a packet to the communication control apparatus 100 (see fig. 1 (1)). The receiving unit 131 receives data packets transmitted from the own company device 10A and the other company devices 20A as received data packets (see fig. 1 (2)).

Next, the determination unit 132 determines the transmission destination and the transmission source based on the information related to the communication control included in the received packet (see (3) of fig. 1). Specifically, the determination unit 132 determines the device of the transmission destination and the device of the transmission source based on OUI (Organizationally Unique Identifier) included in the MAC address (Media Access Control) of the received packet. In addition, the above-mentioned MAC address is used to identify the network interface, and is in principle a 48-bit identifier uniquely assigned to all network devices.

The OUI corresponds to the first half of the 48-bit MAC address, which is also called a vendor code or a vendor ID, and is assigned as a unique identifier to each manufacturer of the providing apparatus. Therefore, by using the OUI, the communication control apparatus 100 can determine that setting or the like is not necessary for each time between the transmission destination device and the device of the transmission source.

Next, the allocation unit 133 allocates a queue to the received packet based on the determination result of the determination unit 132 and the allocation condition of the queue (see fig. 1 (4)). In the present embodiment, the queue allocation conditions are set according to the combination of the transmission destination and the transmission source, and the received packet is allocated by selecting a queue matching the combination of the transmission destination and the transmission source determined by the determination unit 132.

Next, the setting unit 134 sets a transmission schedule of the packets according to the transmission priority order of the packets set for each queue (see fig. 1 (5)). In the example of fig. 1, the priority order included in each queue is set to "high priority" according to the above condition: the transmission destination is the own company device 10A and the transmission source is the own company device 10B "and" low priority: the transmission destination is the other company device 20A and the transmission source is the other company device 20B).

Then, the transmitting unit 135 transmits the reception packet to each of the transmission destination devices according to the transmission schedule set by the setting unit 134 (see fig. 1 (6)). In the example of fig. 1, the communication unit 135 prioritizes communication from the own company device 10A to the own company device 10B, and transmits the received packet (see fig. 1 (7)).

[ 2] constitution of communication control device ]

Next, the configuration of the communication control device 100 according to the embodiment will be described with reference to fig. 2. As shown in fig. 2, the communication control device 100 includes a communication unit 110, a storage unit 120, and a control unit 130. Although not shown in fig. 2, the communication control device 100 may include an input unit (e.g., a touch panel, a keyboard, a mouse, etc.) that receives various operations.

(communication section 110)

The communication unit 110 is realized by NIC (Network Interface Card) or the like. The communication unit 110 is connected to a network by wire or wireless as necessary, and can perform bidirectional transmission and reception of information. In the present embodiment, the communication control device 100 is assumed to perform reception of the data packet by the reception unit 131 and transmission of the data packet by the transmission unit 135 via the communication unit 110, and the following description is omitted.

(storage section 120)

The storage unit 120 includes a queue allocation condition storage unit 121 and a transmission condition storage unit 122. The storage unit 120 is implemented by, for example, a semiconductor memory element such as RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk or an optical disk.

(queue allocation condition storage section 121)

The queue allocation condition storage section 121 stores allocation conditions of queues allocated to respective packets. Specifically, as shown in fig. 3, the queue allocation condition storage section 121 stores items such as "queue ID", "transmission destination", and "transmission source" as queue allocation conditions. For example, in fig. 3, the queue allocation condition storage unit 121 stores information such as "own company device" as the transmission destination and "own company device" as the transmission source, which is identified by "Q001" as the queue ID.

The items such as the "queue ID", the "transmission destination", and the "transmission source" described above are merely examples, and the queue allocation condition storage unit 121 may store other items. The queue allocation condition storage unit 121 may store, for example, 5-tuple (transmission source IP address, transmission source port number, transmission destination (destination) IP address, transmission destination (destination) port number, protocol number), MAC address, OUI, information related to protocol (for example, TCP, UDP, HTTP), information related to control (for example, information such as temperature or ON/OFF state of the air conditioner in the case of a sensor), and the like, instead of the information of the transmission destination and the transmission source determined by the determination unit 132 using the OUI included in the MAC address.

(Transmission condition storing section 122)

The transmission condition storage unit 122 stores information on transmission priority positions of information communications (packets) set for each queue. Specifically, as shown in fig. 4, the transmission condition storage unit 122 stores items such as "condition ID", "queue ID", and "priority". For example, in fig. 4, information of "Q001" for a queue ID and "1" for a priority level identified as "P001" for a condition ID is stored. The transmission condition storage unit 122 may acquire the "queue ID" based on the information held by the queue allocation condition storage unit 121. The items such as the "condition ID", "queue ID" and "priority" described above are merely examples, and the transmission condition storage unit 122 may store other items.

For example, in the present embodiment, the priority of each queue is set to "priority 1" identified by the condition ID P001, based on the information stored in the queue allocation condition storage unit 121 and the transmission condition storage unit 122: the queue ID Q001 identifies "priority 2" that the transmission destination is the own company device, the transmission source is the own company device, and the condition ID P002 identifies: queue ID Q002 recognizes "priority 3" as being addressed to the own company device, as being addressed to another company device ", and as being recognized by condition ID P003: the transmission destination identified by the queue ID Q003 is another company device, the transmission source is the own company device ", and the" priority 4 "identified by the condition ID P004: the transmission destination identified by the queue ID Q004 is other company devices, and the transmission source is other company devices.

The above-described priority is merely an example, and is not limited to this combination. For example, the queue allocation condition storage unit 121 and the transmission condition storage unit 122 may store information such that the priority of packet transmission between other company devices becomes high under the conditions that the transmission destination is the other company device and the transmission source is the other company device. The "priority" is set in stages from 1 to 4, but the same order of priority may be used.

Further, the transmission condition storage unit 122 stores conditions related to the bandwidth limitation in addition to the priority order (priority) of the communication. Specifically, the transmission condition storage unit 122 stores the condition so as to limit the frequency band of communication satisfying the condition identified by the predetermined classification. The transmission condition storage unit 122 may store the priority and the information on the band control at the same time.

(control section 130)

The control unit 130 includes a receiving unit 131, a determining unit 132, a distributing unit 133, a setting unit 134, and a transmitting unit 135. The control unit 130 is realized by executing various programs stored in the storage unit 120 by a Processor (Processor), MPU (Micro Processing Unit), CPU (Central Processing Unit), or the like using a RAM as a work area. The control unit 130 may be realized by IC (Integrated Circuit) such as ASIC (Application Specific Integrated Circuit) and FPGA (Field Programmable Gate Array).

(receiving section 131)

The receiving unit 131 receives a packet transmitted from a device or an apparatus for controlling communication (for example, a switching hub). Further, the receiving unit 131 may limit the received packet according to a predetermined condition. Specifically, when the transmission condition storage unit 122 stores information related to packet reception, the reception unit 131 performs processing such that reception of a packet satisfying a predetermined condition is not received. For example, when the traffic exceeds a predetermined threshold, the receiving unit 131 may limit the bandwidth by limiting the upper limit of the received packet.

(determination section 132)

The determination unit 132 determines the destination and source of the packet based on the information related to the communication control included in the packet for information communication. Specifically, the determination unit 132 determines the device of the transmission destination and the device of the transmission source of the received packet, based on the OUI included in the MAC address, which is information related to communication control included in the received packet. The determination unit 132 determines a transmission destination and a transmission source by using the MAC address of the information related to the communication control included in the packet of the information communication.

In the case where the queue allocation condition storage section 121 stores information other than OUI, the determination section 132 may determine the transmission destination and the transmission source based on the information. For example, when the queue allocation condition storage unit 121 stores 5-tuple (transmission source IP address, transmission source port number, transmission destination (destination) IP address, transmission destination (destination) port number, protocol number), MAC address, OUI, information related to protocol (for example, TCP, UDP, HTTP, etc.), information related to control (for example, information such as temperature or ON/OFF state of air conditioner in the case of a sensor), the determination unit 132 may determine the transmission destination, the transmission source, etc. based ON the above information.

(distribution portion 133)

The allocation unit 133 allocates a predetermined queue to the data packet based on the determination result of the determination unit 132. Specifically, the allocation unit 133 allocates a predetermined queue to a packet satisfying a predetermined condition based on a predetermined condition that associates a combination of a transmission source and a transmission destination with the queue. For example, the allocation unit 133 allocates a predetermined queue to the packet received by the reception unit 131 based on a predetermined condition that the combination of the transmission source and the transmission destination stored in the queue allocation condition storage unit 121 is associated with the queue, and based on a queue allocation condition that matches the combination of the transmission destination and the transmission source determined by the determination unit 132.

(setting part 134)

The setting unit 134 sets the transmission schedule of the packet according to predetermined conditions included in the queue. Specifically, the setting unit 134 sets a schedule for transmitting the packets stored in the queue based on the information on the priority order of the information communication stored in the transmission condition storage unit 122 as the predetermined condition set for the queue.

Further, the setting unit 134 may set, for example, implementation conditions of band limitation, in addition to the transmission schedule based on the information related to the priority order of the information communication. Specifically, when the transmission condition storage unit 122 stores information related to the bandwidth control, the setting unit 134 may set an upper limit for limiting the communication capacity when a predetermined condition is satisfied.

(transmitting section 135)

The transmitting unit 135 transmits the packet to the device of the destination or the communication control apparatus (such as a switching hub) according to the transmission schedule of the packet set by the setting unit 134.

When the setting unit 134 sets conditions related to the bandwidth limitation, the transmitting unit 135 may limit the bandwidth of the transmission packet.

[3. Sequence of treatments ]

Next, the procedure of the communication control method of the communication control device 100 according to the present embodiment will be described. Fig. 5 is a flowchart showing an example of the procedure of the communication control process according to the embodiment.

First, the receiving unit 131 receives a packet (step S101). Next, the determination unit 132 determines the transmission destination and the transmission source using the OUI included in the MAC address of the packet (step S102).

Next, the allocation unit 133 allocates a predetermined queue based on the determination result of the determination unit 132 and the queue allocation condition stored in the queue allocation condition storage unit 121 (step S103). Next, the setting unit 134 sets a transmission schedule of the packet based on the transmission conditions set for the queue stored in the transmission condition storage unit 122 (step S104). Then, the transmitting unit 135 sequentially transmits the data packets to the predetermined transmission destination devices according to the transmission schedule (step S105).

[4. Effect ]

As described above, the communication control device 100 is a communication control device that controls information communication in a control system of a device, and determines a transmission destination and a transmission source of a packet based on information related to communication control included in a packet of the information communication, assigns a predetermined queue to the packet based on a determination result of the determination unit 132, and sets a transmission schedule of the packet based on a predetermined condition included in the queue. Therefore, according to the present embodiment, the following effects are achieved. Here, the effects provided by the communication control device 100 will be described while comparing the conventional techniques with fig. 6 to 9.

[4-1. Communication control between devices to be controlled ]

First, fig. 6 shows a scene in which the own company device 10B, the own company device 10C, and the other company devices 20A communicate with the own company device 10A via the switching hub 200 of the related art. The communication by the own company device 10B is referred to as a packet 10BP, the communication by the own company device 10C is referred to as a packet 10CP, and the communication by the other company device 20A is referred to as a packet 20AP.

In the communication via the switching hub 200 of the related art, when the own company device 10A is transmitted in a high frequency band from the own company device 10B, the own company device 10C, and the other company devices 20A, the own company device 10A can only receive a packet in a 100% bandwidth. Therefore, if the predetermined communication capacity is exceeded, there is a possibility that even the own company devices cannot communicate with each other. (refer to fig. 6 (1)).

On the other hand, fig. 7 shows a scene in which the own company device 10A communicates with the own company device 10B, the own company device 10C, and the other company device 20A via the communication control device 100 according to the present embodiment. In fig. 7, as in fig. 6, the communication by the own company device 10B is referred to as a packet 10BP, the communication by the own company device 10C is referred to as a packet 10CP, and the communication by the other company device 20A is referred to as a packet 20AP.

In the case of fig. 7, the communication control device 100 adjusts the priority order of packet transmission based on the queue to which the received packets are assigned, according to the condition of the priority order of communication set in advance. As a result, the communication control device 100 prioritizes the communication among the own company device 10A, the own company device 10B, and the own company device 10C, and can thereby suppress the influence of the communication of the other company device 20A, and perform the communication among the own company devices (see (2) of fig. 7).

[4-2. Communication control between devices controlling communication ]

Next, fig. 8 shows a scene in which communication is performed between the own company device 10A and the own company device 10B and between the other company device 20A and the other company device 20B via the switching hub 200A and the switching hub 200B of the related art. The communication by the own company device 10A is set as a packet 10AP, the communication by the own company device 10B is set as a packet 10BP, the communication by the other company device 20A is set as a packet 20AP, and the communication by the other company device 20B is set as a packet 20BP.

In the communication via the switching hub 200 of the related art of fig. 8, if the communication of the high frequency band is performed between the other company device 20A and the other company device 20B, the state is brought into which the network band is shared between the own company device 10A and the own company device 10B and the other company device 20A and the other company device 20B between the switching hub 200A and the switching hub 200B. As a result, there is a possibility that communication between the own company device 10A and the own company device 10B cannot be smoothly performed (see fig. 8 (1)).

On the other hand, fig. 9 shows a scene in which the own company device 10A and the own company device 10B, the other company device 20A, and the other company device 20B communicate with each other via the communication control device 100A and the communication control device 100B of the present embodiment. In fig. 9, similarly to fig. 8, the communication by the own company device 10A is set as a packet 10AP, the communication by the own company device 10B is set as a packet 10BP, the communication by the other company device 20A is set as a packet 20AP, and the communication by the other company device 20B is set as a packet 20BP.

In the case of fig. 8, the communication control device 100 adjusts the priority order of packet transmission according to the queue to which the received packet is assigned. As a result, the communication control device 100 prioritizes the communication between the own company device 10A and the own company device 10B according to the condition of the predetermined communication priority order, and can thereby suppress the influence of the communication of the other company devices 20A and 20B, and perform the communication between the own company devices (see (2) of fig. 9).

If the effects provided by the communication control apparatus 100 described above are summarized, it is the communication control apparatus 100 that can provide the following effects: by prioritizing the communication between the own company devices according to the conditions of the priority order of the communication set in advance, it is possible to suppress influence of other company devices and other company systems on the own company devices and the own company devices in the control network of the devices in which a plurality of manufacturers coexist.

Further, the condition of the priority order controlled by the communication control device 100 is not related to the classification of "own company device" or "other company device", but the condition can be freely set for the classification that can be set based on the information that can be acquired from the packet. Therefore, the condition setting can be flexibly performed according to the requirements of the end user or the like using the control system of the device.

The communication control device 100 may set a condition other than the priority order, and may perform, for example, band control. Therefore, the conditions for communication control can be flexibly set according to the requirements of the end user or the like using the control system of the apparatus and the situation of the control system.

Further, the communication control apparatus 100 determines the transmission destination and the transmission source from the OUI included in the MAC address. As described above, the OUI is the OUI in which the first 24 bits are allocated to each manufacturer, and the second 24 bits are the unique numbers of the devices allocated to each apparatus of each manufacturer in a non-repetitive manner. In other words, OUI is identification information unique to each device of each manufacturer. Accordingly, the communication control device 100 can perform the determination of each device of each manufacturer without setting by using the OUI. Accordingly, the communication control apparatus 100 can provide the following effects: communication control (priority setting) of the equipment of each manufacturer can be performed without setting for communication control.

[5 hardware constitution ]

The communication control device 100 of the present embodiment is implemented by, for example, a computer 1000 configured as shown in fig. 10. Fig. 10 is a hardware configuration diagram showing an example of a computer that realizes the functions of the communication control device 100. The computer 1000 has a form in which a CPU 1100, a RAM1200, a ROM 1300, an auxiliary storage device 1400, a communication I/F (interface) 1500, and an input/output I/F (interface) 1600 are connected via a bus 1800.

The CPU 1100 operates according to a program stored in the ROM 1300 or the auxiliary storage device 1400, and controls each unit. The ROM 1300 stores a boot program executed by the CPU 1100 at the time of startup of the computer 1000, a program depending on hardware of the computer 1000, and the like.

The auxiliary storage 140 stores programs executed by the CPU 1100, data used by related programs, and the like. The communication I/F1500 receives data from other devices via a predetermined communication network NW and transmits the data to the CPU 1100, and transmits data generated by the CPU 1100 to the other devices via the predetermined communication network NW. The CPU 1100 controls an output device such as a display or a printer, and an input/output device 1700 such as a keyboard or a mouse via the I/F1600. The CPU 1100 acquires data from the input-output device 1700 via the input/output I/F1600. In addition, the CPU 1100 outputs the generated data to the input-output device 1700 via the input-output I/F1600.

For example, when the computer 1000 functions as the communication control device 100 of the present embodiment, the CPU 1100 of the computer 1000 executes a program loaded on the RAM1200 to realize the function of the control unit 130.

[6. Others ]

In the respective processes described in the above embodiments and modifications, all or part of the processes described as being performed automatically may be performed manually, or all or part of the processes described as being performed manually may be performed automatically by a known method. The processing sequence, specific names, and information including various data and parameters shown in the above description or the drawings may be arbitrarily changed unless otherwise specifically described. For example, the various information shown in the figures is not limited to the illustrated information.

The components of each illustrated apparatus are functionally conceptual elements, and are not necessarily physically configured as illustrated. That is, the specific mode of dispersing and integrating the respective devices is not limited to the illustrated one, and all or a part of the devices may be functionally or physically dispersed and integrated in any unit according to various loads, use conditions, and the like.

The above-described constituent elements include elements that can be easily conceived by those skilled in the art, and substantially the same elements, that is, so-called equivalent ranges. Further, the above-described embodiments and modifications may be appropriately combined within a range where the processing contents are not contradictory.

The "portion (section, module, unit)" may be replaced by a "device" or a "circuit" or the like. For example, the control section may be replaced with a control device or a control circuit.

While the embodiments have been described in detail with reference to the drawings, these are examples, and the embodiments are represented by the embodiments described in the disclosure section of the present invention, and can be implemented in other modes of various modifications and improvements according to the knowledge of those skilled in the art.

[ description of the symbols ]

10A own company equipment

10B local company equipment

10C company equipment

20A other company devices

20B other company devices

10AP data packet

10BP data packet

10CP data packet

20AP data packet

20BP data packet

100. Communication control device

100A communication control device

100B communication control device

110. Communication unit

120. Storage unit

121. Queue allocation condition storage unit

122. Transmission condition storage unit

130. Control unit

131. Receiving part

132. Determination unit

133. Distribution part

134. Setting part

135. Transmitting unit

200 exchange type concentrator

200A switching hub

200B switching hub

1000. Computer with a memory for storing data

1100CPU

1200RAM

1300ROM

1400 auxiliary storage device

1500 communication I/F

1600 input output I/F

1700. Input/output device

1800. Bus line

NW-specified communication network.

Claims (6)

1. A communication control device for controlling information communication in a control system of a device,

the communication control device is characterized by comprising:

a determination unit that determines a transmission destination and a transmission source of a packet of the information communication based on information related to communication control included in the packet;

an allocation unit that allocates a predetermined queue to the packet according to a determination result of the determination unit; and

and a setting unit that sets a transmission schedule of the packet according to predetermined conditions included in the queue.

2. The communication control device according to claim 1, wherein,

the determination unit determines the device of the transmission destination and the device of the transmission source based on the OUI included in the MAC address, which is information related to the communication control included in the received packet of the packets.

3. The communication control device according to claim 1, wherein,

the allocation unit allocates the predetermined queue to the packet satisfying a predetermined condition based on the predetermined condition that associates the combination of the transmission source and the transmission destination with the queue.

4. A communication control apparatus according to claim 1 or 3, wherein,

the setting unit sets a schedule for transmitting the packets stored in the queue based on the predetermined condition set for the queue, that is, information related to the priority of the information communication.

5. A communication control method for controlling information communication in a control system of an apparatus,

the communication control method is characterized by comprising the following steps:

determining a transmission destination and a transmission source of the data packet according to information related to communication control contained in the data packet of the information communication;

allocating a predetermined queue to the packet according to a determination result of the determination unit; and

and setting a transmission schedule of the data packet according to a predetermined condition contained in the queue.

6. A communication control program for controlling information communication in a control system of an apparatus,

the communication control program causes a computer to execute:

determining a transmission destination and a transmission source of the data packet according to information related to communication control contained in the data packet of the information communication;

allocating a predetermined queue to the packet according to a determination result of the determination unit; and

and setting a transmission schedule of the data packet according to a predetermined condition contained in the queue.