WO2021214945A1 - Dispositif de commande de communication, procédé de commande de communication et programme de commande de communication - Google Patents

Dispositif de commande de communication, procédé de commande de communication et programme de commande de communication Download PDF

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Publication number
WO2021214945A1
WO2021214945A1 PCT/JP2020/017517 JP2020017517W WO2021214945A1 WO 2021214945 A1 WO2021214945 A1 WO 2021214945A1 JP 2020017517 W JP2020017517 W JP 2020017517W WO 2021214945 A1 WO2021214945 A1 WO 2021214945A1
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Prior art keywords
communication control
list
order
instruction receiving
network
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PCT/JP2020/017517
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English (en)
Japanese (ja)
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魚住　光成
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三菱電機株式会社
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Priority to PCT/JP2020/017517 priority Critical patent/WO2021214945A1/fr
Publication of WO2021214945A1 publication Critical patent/WO2021214945A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Definitions

  • the present disclosure relates to a communication control device, a communication control method, and a communication control program.
  • Non-Patent Document 1 proposes a specification relating to a request and a response when an energy service control entity of a resource aggregator gives an instruction to an energy resource control device of an electric power consumer.
  • the queue of network devices in the IP network becomes long and packets are discarded.
  • the packet is sent at the maximum capacity of the server's network interface.
  • the server corresponds to the client that issues the request in the general client-server model.
  • some devices correspond to servers that return a response to a request.
  • a narrow band line such as a wide area network exists in the network, it is accumulated in the queue of the network device and transferred sequentially. If this amount is too large, the packet will be dropped. This is the bottleneck.
  • the purpose of this disclosure is to optimize the order of requests for a plurality of devices connected to the network.
  • the communication control device is a communication control device that transmits a control instruction to a plurality of instruction receiving devices via a network.
  • An order determining unit for determining the order of transmitting the control instructions as an order list is provided based on the device list which is a list of the plurality of instruction receiving devices and the configuration information indicating the routes constituting the network.
  • the order of control instructions for a plurality of instruction receiving devices connected to the network can be optimized.
  • FIG. 1 A system configuration example of the communication control system according to the first embodiment.
  • the flow chart which shows the communication control processing of the communication control system which concerns on Embodiment 1.
  • FIG. A configuration example of a communication control device according to a modified example of the first embodiment.
  • the flow diagram which shows the order determination algorithm which concerns on Embodiment 2.
  • the flow diagram which shows the order determination algorithm which concerns on Embodiment 2.
  • FIG. The figure which shows the round-trip latency RTT between ERC1 and 2 in the communication control system which concerns on Embodiment 3.
  • FIG. The flow chart which shows the measurement process which concerns on Embodiment 3.
  • FIG. The figure which shows the sort result of the hash value by the node 0a of the communication control system 500 which concerns on Embodiment 4.
  • FIG. The figure which shows the sort result of the hash value by the node 0b of the communication control system 500 which concerns on Embodiment 4.
  • FIG. The flow chart which shows the process of the order determination part which concerns on Embodiment 4.
  • FIG. 1 is a system configuration diagram of the communication control system 500 according to the present embodiment.
  • the communication control device 101 and the plurality of instruction receiving devices 103 communicate with each other via the network 102.
  • the network 102 is, for example, an IP (Internet Protocol) network including a wide area network.
  • the communication control system 500 is, for example, an energy system that adjusts the supply and demand of energy.
  • the communication control device 101 is a control instruction device that transmits a control instruction 30 to the instruction receiving device 103 via the network 102.
  • the communication control device 101 is, for example, an energy service control entity (DRE).
  • the communication control device 101 executes aggregation communication control and transmits the control instruction 30 to the instruction receiving device 103.
  • the instruction receiving device 103 receives the control instruction 30 from the communication control device 101 via the network 102.
  • the instruction receiving device 103 is, for example, an energy resource control device (ERC).
  • FIG. 2 is a network configuration diagram of the communication control system 500 according to the present embodiment.
  • node 0 is a device that performs aggregation communication control, and is an example of the communication control device 101.
  • each of the nodes 1 to 9 is an example of an instruction receiving device 103 which is a device for receiving a control instruction from the node 0.
  • each of the network device a to the network device f is a network device 1021 that relays the control instruction transmitted from the communication control device 101.
  • the node 0 and the node 9 are connected via a line 202, a network device c, a line 204, a network device f, and a line 206.
  • the communication control device 101 is a computer.
  • the communication control device 101 includes a processor 910 and other hardware such as a memory 921, an auxiliary storage device 922, an input interface 930, an output interface 940, and a communication device 950.
  • the processor 910 is connected to other hardware via a signal line and controls these other hardware.
  • the communication control device 101 includes a list reading unit 110, an order determination unit 120, an order reading unit 130, a transmission unit 140, a reception unit 150, and a storage unit 160 as functional elements.
  • the device list 31, the configuration information 32, the sequence list 33, and the result list 34 are stored in the storage unit 160.
  • the functions of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150 are realized by software.
  • the storage unit 160 is provided in the memory 921.
  • the storage unit 160 may be provided in the auxiliary storage device 922, or may be provided in the memory 921 and the auxiliary storage device 922 in a distributed manner.
  • the processor 910 is a device that executes a communication control program.
  • the communication control program is a program that realizes the functions of the list reading unit 110, the order determination unit 120, the order reading unit 130, the transmission unit 140, and the reception unit 150.
  • the processor 910 is an IC (Integrated Circuit) that performs arithmetic processing. Specific examples of the processor 910 are a CPU (Central Processing Unit), a DSP (Digital Signal Processor), and a GPU (Graphics Processing Unit).
  • the memory 921 is a storage device that temporarily stores data.
  • a specific example of the memory 921 is a SRAM (Static Random Access Memory) or a DRAM (Dynamic Random Access Memory).
  • the auxiliary storage device 922 is a storage device that stores data.
  • a specific example of the auxiliary storage device 922 is an HDD.
  • the auxiliary storage device 922 may be a portable storage medium such as an SD (registered trademark) memory card, CF, NAND flash, flexible disk, optical disk, compact disc, Blu-ray (registered trademark) disk, or DVD.
  • HDD is an abbreviation for Hard Disk Drive.
  • SD® is an abbreviation for Secure Digital.
  • CF is an abbreviation for CompactFlash®.
  • DVD is an abbreviation for Digital Versatile Disc.
  • the input interface 930 is a port connected to an input device such as a mouse, keyboard, or touch panel. Specifically, the input interface 930 is a USB (Universal Serial Bus) terminal. The input interface 930 may be a port connected to a LAN (Local Area Network).
  • LAN Local Area Network
  • the output interface 940 is a port to which a cable of an output device such as a display is connected.
  • the output interface 940 is a USB terminal or an HDMI (registered trademark) (High Definition Multimedia Interface) terminal.
  • the display is an LCD (Liquid Crystal Display).
  • the output interface 940 is also referred to as a display interface.
  • the communication device 950 has a receiver and a transmitter.
  • the communication device 950 is connected to a communication network such as a LAN, the Internet, or a telephone line.
  • the communication device 950 is a communication chip or a NIC (Network Interface Card).
  • the communication control program is executed in the communication control device 101.
  • the communication control program is read into processor 910 and executed by processor 910.
  • the memory 921 not only the communication control program but also the OS (Operating System) is stored.
  • the processor 910 executes a communication control program while executing the OS.
  • the communication control program and the OS may be stored in the auxiliary storage device 922.
  • the communication control program and the OS stored in the auxiliary storage device 922 are loaded into the memory 921 and executed by the processor 910. A part or all of the communication control program may be incorporated in the OS.
  • the communication control device 101 may include a plurality of processors that replace the processor 910. These plurality of processors share the execution of the communication control program.
  • Each processor like the processor 910, is a device that executes a communication control program.
  • Data, information, signal values and variable values used, processed or output by the communication control program are stored in the memory 921, the auxiliary storage device 922, or the register or cache memory in the processor 910.
  • the “unit” of each of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150 may be read as “process”, “procedure”, or “process”.
  • the communication control program causes the computer to execute the list reading process, the order determination process, the order reading process, the transmission process, and the reception process.
  • the "process” of list read processing, order determination processing, order read processing, transmission processing, and reception processing is "program”, “program product”, "computer-readable storage medium that stores the program", or “program is recorded”. It may be read as "a computer-readable recording medium”.
  • the communication control method is a method performed by the communication control device 101 executing a communication control program.
  • the communication control program may be provided stored in a computer-readable recording medium. Further, the communication control program may be provided as a program product.
  • the operation procedure of the communication control system 500 corresponds to the communication control method. Further, the program that realizes the operation of the communication control system 500 corresponds to the communication control program.
  • the communication control device 101 of the communication control system 500 transmits the control instruction 30 to the plurality of instruction receiving devices 103 via the network 102.
  • the order determination unit 120 determines the order in which the control instructions 30 are transmitted as the order list 33 based on the device list 31 which is a list of the plurality of instruction receiving devices 103 and the configuration information 32 indicating the routes constituting the network 102. .. Further, the network 102 has a line to which at least two instruction receiving devices 103 among the plurality of instruction receiving devices 103 are connected.
  • the order determination unit 120 determines the order list 33 so that at least two instruction receiving devices 103 are not continuous.
  • FIG. 4 is a flow chart showing a communication control process of the communication control system 500 according to the present embodiment.
  • FIG. 3 shows a mechanism for determining the access order of the instruction receiving device 103 by the communication control device 101 that executes aggregation communication control.
  • the device list 31 is a list of instruction receiving devices 103 accessed by the communication control device 101. Specifically, the device list 31 is a list from node 1 to node 9 in FIG. The device list 31 is also referred to as an ERC list.
  • the configuration information 32 is information representing the configuration of the network 102. Specifically, the configuration information 32 is information representing a network configuration as shown in FIG.
  • step S101 the list reading unit 110 reads the device list 31 and transmits the device list 31 to the order determination unit 120. Specifically, the list reading unit 110 ends the process when the reading and transmission of all the device lists 31 are completed.
  • the sequence determination unit 120 reads the configuration information 32 and creates the sequence list 33 based on the device list 31 and the configuration information 32.
  • the order list 33 is a list showing the order in which the telegram is transmitted to the instruction receiving device 103. Specifically, the order list 33 is a list showing the order in which the telegrams are transmitted from the node 1 to the node 9.
  • the ordering unit 120 generates an order list 33 that avoids continuously accessing the instruction receiving devices 103 when a plurality of instruction receiving devices 103 exist ahead of the line 204. At the end of the line 204, there are a node 7, a node 8, and a node 9. Therefore, the order determination unit 120 creates the order list 33 so that the node 7, the node 8, and the node 9 are not continuous.
  • step S103 the order reading unit 130 reads the order list 33 and transmits the order list 33 to the transmission unit 140. Specifically, the sequence reading unit 130 ends the process when all the sequence lists 33 have been read and transmitted.
  • step S104 the transmission unit 140 transmits the control instruction to the instruction receiving device 103 according to the order in the order list 33.
  • the receiving unit 150 receives the response of the instruction receiving device 103 and stores it in the result list 34.
  • the functions of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150 are realized by software.
  • the functions of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150 may be realized by hardware.
  • the communication control device 101 includes an electronic circuit 909 instead of the processor 910.
  • FIG. 5 is a diagram showing a configuration of a communication control device 101 according to a modified example of the present embodiment.
  • the electronic circuit 909 is a dedicated electronic circuit that realizes the functions of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150.
  • the electronic circuit 909 is specifically a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, a logic IC, a GA, an ASIC, or an FPGA.
  • GA is an abbreviation for Gate Array.
  • ASIC is an abbreviation for Application Special Integrated Circuit.
  • FPGA is an abbreviation for Field-Programmable Gate Array.
  • the functions of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150 may be realized by one electronic circuit or may be distributed to a plurality of electronic circuits. good.
  • the list reading unit 110 even if some functions of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150 are realized by an electronic circuit, and the remaining functions are realized by software. good. Further, some or all the functions of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150 may be realized by the firmware.
  • Each of the processor and the electronic circuit is also called a processing circuit. That is, the functions of the list reading unit 110, the order determining unit 120, the order reading unit 130, the transmitting unit 140, and the receiving unit 150 are realized by the processing circuit.
  • the transmission unit 140 can avoid a long queue length of a network device such as an intermediate network device c due to continuous packets, and can transmit a short-time message. It will be possible. By having the communication control device access a plurality of instruction receiving devices in an adjusted order and timing, the execution time can be shortened without causing packet loss or retransmission.
  • the order reading unit for reading the order list can also be diverted from the configuration in which the device list was read, and the order determination unit can be easily incorporated.
  • Embodiment 2 points different from the first embodiment and points to be added to the first embodiment will be mainly described.
  • the same reference numerals are given to the configurations having the same functions as those in the first embodiment, and the description thereof will be omitted.
  • the order determination by the order determination unit 120 in the first embodiment is intended to improve the time performance by adjusting the access order of the instruction receiving device 103 passing through the bottleneck.
  • an algorithm for determining the exact timing of access according to the configuration information 32 will be described.
  • the sequence determination unit 120 calculates the occupied time when the control instruction 30 passes to the instruction receiving device 103 based on the band of each route indicated by the configuration information 32 and the message length of the control instruction 30. do. Then, the order determination unit 120 determines the order list 33 so that the occupied times do not overlap.
  • FIGS. 6 and 7 are flow charts showing an order determination algorithm according to the present embodiment.
  • Perl is shown as an example of the code.
  • "START" 401 is the start of the algorithm.
  • the “configuration information input” 402 creates the “table% band” 451 by inputting the configuration information 32.
  • the “access destination input” 403 creates the “table% traffic” 452 from the contents of the device list 31 read by the list reading unit 110.
  • the “Rapid (starting point)” 404 calls the “function Rapid” 406 with the node name "node 0" of the communication control device 101 as an argument.
  • the “timing output” 405 outputs the contents of the “table% traffic” 452 updated by the “Rapid” 406 as an order list 33, and ends the algorithm with the “END” 427.
  • the "function Rapid" 406 receives an argument as $ src and adds $ src to "list @ list” 453 with “push $ src to list” 407.
  • the "table% traffic" 452 indicates the timing of accessing each "device” (instruction receiving device 103). This makes it possible to determine efficient timing.
  • the value of "table% band” 451 is the time required to pass through the lines 202, 204, and 206 constituting the network, but the fastest time is set to 1, and the algorithm is shown assuming that each is an integral multiple of the time.
  • the process of calculating the occupancy time when the control instruction 30 passes from the band and the telegram length of each route indicated by the configuration information 32 is as follows.
  • the value of "table% band” 451 is the time required to pass through the lines 202, 204, and 206 constituting the network. The algorithm is shown assuming that the fastest time is 1 and each is an integral multiple of that time.
  • the process of calculating the order or timing at which the occupied times do not overlap is as follows. This is the processing after the "timing calculation Start” 415 called from the “timing calculation” 412. Here, if the timing is used in the preceding process ("419 if there is a path in $ used)", the timing is incremented and the timing is tried to be secured again.
  • the communication control system 500 According to the communication control system 500 according to the present embodiment, it is possible to determine the strict access timing according to the configuration information.
  • Embodiment 3 points to be added to the first and second embodiments will be mainly described.
  • configurations having the same functions as those of the first and second embodiments are designated by the same reference numerals, and the description thereof will be omitted.
  • the order determination unit 120 transmits a continuous packet to two instruction receiving devices among the plurality of instruction receiving devices 103. Then, the ordering unit 120 estimates the common bottleneck band based on the deviation of the reciprocating latency of the two instruction receiving devices 103, and updates the configuration information 32.
  • FIG. 8 is a diagram showing a network configuration of the communication control system 500 according to the present embodiment.
  • the network configuration is as shown in FIG. 8, but the details may be unknown in the configuration information 32.
  • a telegram such as a control instruction is transmitted from the DRE, which is the communication control device 101, to each of the ERC1 to ERC5, which are the instruction receiving devices 103.
  • the communication control system 500 continuously transmits packets such as ICMP (Internet Control Message Protocol) in which the remote node immediately returns a response.
  • ICMP Internet Control Message Protocol
  • FIG. 9 is a diagram showing a round-trip latency RTT between ERC1 and ERC3, ERC4, and ERC5 in the communication control system 500 according to the present embodiment.
  • FIG. 10 is a diagram showing a round-trip latency RTT between ERCs 1 and 2 in the communication control system 500 according to the present embodiment.
  • RTT is an abbreviation for Round-Trip Time.
  • the RTT does not change between ERC1 and ERC3, ERC4 and ERC5, respectively.
  • the latter RTT is longer by ba.
  • b is the time to pass through the bottleneck.
  • FIG. 11 is a flow chart showing a measurement process according to the present embodiment.
  • the “start” 801 is the start of measurement
  • the “time recording” 802 records the time immediately before the “ERC SEND1” 803 that transmits ICMP to the first target in the “log” 810.
  • the “time record” 804 records the time immediately before the “ERC SEND2” 805 that transmits ICMP to the second target in the “log” 810. Two ICMPs are transmitted and this process is "finished” 806.
  • the "ERC RECV” 807 continues to receive ICMP responses.
  • the "time record” 808 records the time immediately after the reception in the "log” 810.
  • "Log” 810 reveals the RTTs of the two ICMPs. Note that "ERC SEND1" 803 and “ERC SEND2” 805 are processes of the transmission unit 140.
  • "ERC RECV” 807 is the processing of the receiving unit 150.
  • the details of the configuration information 32 can be acquired based on the log 810 of FIG. If the details of the configuration information 302 can be obtained, the order determination unit 120 adjusts the timing by the same processing as in the first and second embodiments.
  • the communication control system 500 when there is an unknown part in the network configuration information, continuous packets are transmitted to the two instruction receiving devices to prevent the RTT deviation.
  • the common bottleneck bandwidth can be estimated. Therefore, according to the communication control system 500 according to the present embodiment, even in a network whose configuration information is unknown, the bottleneck band can be estimated from the telegram length by acquiring the RTT by continuous packet transmission. In addition, by grasping the overlapping relationship of routes between ERCs from the difference in RTT, it is possible to adjust the appropriate access order and timing.
  • Embodiment 4 points to be added to the first to third embodiments will be mainly described.
  • configurations having the same functions as those of the first and second embodiments are designated by the same reference numerals, and the description thereof will be omitted.
  • the communication control device 101 is a plurality of communication control devices.
  • Each order determination unit 120 of the plurality of communication control devices calculates a hash value from the attributes of the instruction receiving device 103 which is the target controlled by the self-communication control device, and generates an order list 33 using the sort order of the hash values. do.
  • FIG. 12 is a diagram showing a network configuration of the communication control system 500 according to the present embodiment.
  • one communication control device 101 that performs aggregation communication control exists in the network 102.
  • a plurality of communication control devices such as node 0a and node 0b exist as the communication control device 101.
  • FIG. 13 is a diagram showing a hash value acquired from the node name of the communication control system 500 according to the present embodiment.
  • the node name is an example of the attribute of the instruction receiving device 103.
  • a hash value is obtained from the node name of the instruction receiving device 103. This hash value is the same regardless of whether it is calculated by the order determination unit 120 of the communication control device 101 of either node 0a or node 0b.
  • FIG. 14 is a diagram showing a result of sorting hash values by node 0a of the communication control system 500 according to the present embodiment.
  • FIG. 15 is a diagram showing a result of sorting hash values by node 0b of the communication control system 500 according to the present embodiment.
  • FIG. 16 is a flow chart showing the processing of the order determination unit 120 according to the present embodiment.
  • each of node 0a and node 0b sorts by the hash value of the instruction receiving device 103 that each node is in charge of. Then, each of the node 0a and the node 0b accesses the instruction receiving device 103 in the sorted order.
  • FIG. 16 shows a procedure for obtaining a hash value from the device list 31.
  • "Reading the device list” 1302 is started by “Start” 1301, and the hash value is obtained by “Calculation of hash value” 1303 for each case.
  • the hash value calculation algorithm should be able to project onto a sufficiently large space such as md2.
  • the obtained hash value is stored in the "hash value list” 1311. This is the input of "reading the device list” 305 in FIG. 3, and at that time, the "order timing determination” 306 may sort the hash values. After reading all the "device list” 31, "end” 1304 is performed.
  • each ordering unit determines the device for the device to be controlled. Find the hash value from attributes such as the node name of. Then, by accessing the devices in the sort order of the hash values, network delay or packet loss can be reduced.
  • the node names in the device list are roughly arranged as shown in ERC numbers 1, 2, ... In FIG. 2 or FIG. Therefore, continuous access is inconvenient because it puts pressure on the bottleneck band. Therefore, mapping with hash reduces the load on the bottleneck.
  • an order list is to be created as in the first embodiment, adjustment between the DREs is required, and communication occurs between the nodes 0a and 0b.
  • a method of mapping by hash is presented in order to prevent such communication from occurring.
  • the order list can be determined independently for node 0a and node 0b, and mutual coordination is not required. In addition, it is less likely that access will be accumulated because the order will be different if the results of even mapping are used rather than accessing as they are according to the device list.
  • each part of the communication control device has been described as an independent functional block.
  • the configuration of the communication control device does not have to be the configuration as in the above-described embodiment.
  • the functional block of the communication control device may have any configuration as long as it can realize the functions described in the above-described embodiment.
  • a plurality of parts may be combined and carried out.
  • one part of these embodiments may be implemented.
  • these embodiments may be implemented in any combination as a whole or partially. That is, in the first to fourth embodiments, it is possible to freely combine the embodiments, modify any component of each embodiment, or omit any component in each embodiment.
  • control instruction 31 device list, 32 configuration information, 33 order list, 34 result list, 101 communication control device, 102 network, 1021 network device, 103 instruction receiver, 110 list reading unit, 120 order determination unit, 130 order reading Unit, 140 transmitter, 150 receiver, 160 storage, 202, 204, 206 lines, 500 communication control system, 909 electronic circuit, 910 processor, 921 memory, 922 auxiliary storage, 930 input interface, 940 output interface, 950 Communication device.

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Abstract

Selon l'invention, un dispositif de commande de communication (101) optimise l'ordre de demandes en rapport avec une pluralité de dispositifs qui sont connectés à un réseau. Le dispositif de commande de communication (101) transmet des instructions de commande (30) à une pluralité de dispositifs récepteurs d'instructions (103) par l'intermédiaire d'un réseau (102). Une unité de détermination d'ordre (120) du dispositif de commande de communication (101) détermine, sous la forme d'une liste d'ordre (33), l'ordre de transmission des instructions de commande (30) en fonction d'une liste de dispositifs (31) qui est une liste de la pluralité de dispositifs récepteurs d'instructions (103) et en fonction d'informations de configuration (32) qui indiquent des trajets constituant le réseau (102).
PCT/JP2020/017517 2020-04-23 2020-04-23 Dispositif de commande de communication, procédé de commande de communication et programme de commande de communication WO2021214945A1 (fr)

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WO2016185710A1 (fr) * 2015-05-20 2016-11-24 日本電気株式会社 Procédé et dispositif de transmission de paquets
JP2019049950A (ja) * 2017-09-12 2019-03-28 富士通株式会社 通信装置及び通信方法

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