WO2023021634A1 - Système de commande de communication, procédé de commande de communication et programme de commande de communication - Google Patents

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

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Publication number
WO2023021634A1
WO2023021634A1 PCT/JP2021/030268 JP2021030268W WO2023021634A1 WO 2023021634 A1 WO2023021634 A1 WO 2023021634A1 JP 2021030268 W JP2021030268 W JP 2021030268W WO 2023021634 A1 WO2023021634 A1 WO 2023021634A1
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Prior art keywords
flow
unit
communication protocol
tunneling
multipath
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PCT/JP2021/030268
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English (en)
Japanese (ja)
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雅人 西口
諭士 中務
勇樹 武井
浩行 大西
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日本電信電話株式会社
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Priority to JP2023542111A priority Critical patent/JP7544284B2/ja
Priority to PCT/JP2021/030268 priority patent/WO2023021634A1/fr
Publication of WO2023021634A1 publication Critical patent/WO2023021634A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/24—Multipath
    • H04L45/243—Multipath using M+N parallel active paths

Definitions

  • the present invention relates to a communication control system, a communication control method and a communication control program.
  • the communication device changes the processing priority for the packet, or A control method is known to secure the data (see, for example, Non-Patent Document 1).
  • CoS Class of Service
  • DSCP Differentiated Services Code Point
  • 5tuple etc. contained in the packet header
  • the communication device changes the processing priority for the packet, or A control method is known to secure the data (see, for example, Non-Patent Document 1).
  • MPLS-TE was formerly known, and recently, a method of specifying a route by a centralized controller is known (for example, non-patented See Reference 2).
  • the network entry node embeds an identifier that indicates the packet transfer order in the packet, realizing route control by source routing.
  • the conventional technology has the problem that it may be difficult to ensure the communication requirements of the application on the transport network.
  • network slicing technology builds a logical network according to the requirements of each application.
  • various QoS classes (5QI: 5G QoS Identifier) are defined in order to more flexibly and finely secure the requirements.
  • Non-Patent Document 1 there is a static limit to the bandwidth that can be secured, so it is difficult to cope with the increase in bandwidth-guaranteed communications and communications that require broadband.
  • Non-Patent Document 2 it is difficult to completely prevent packet loss because the path is switched after disconnection is detected.
  • a communication control system includes an identification unit for identifying whether or not a flow input to a transport network is a flow of a multipath communication protocol; a dividing unit that divides the flow identified as the flow of the multipath communication protocol by the division unit of the multipath communication protocol according to the division unit of the multipath communication protocol; a tunneling unit that performs tunneling using a path communication protocol; and a mapping unit that maps the flow tunneled by the tunneling unit to a path connecting an ingress-side node and an egress-side node in the transport network.
  • FIG. 1 is a diagram showing a configuration example of a communication control system according to the first embodiment.
  • FIG. 2 is a diagram illustrating processing for adding a dynamic bandwidth to a declared user.
  • FIG. 3 is a diagram illustrating processing for adding a dynamic bandwidth to a declared user.
  • FIG. 4 is a diagram illustrating processing for adding a dynamic bandwidth to a declared user.
  • FIG. 5 is a diagram illustrating the process of providing broadcasts to high-reliability requesting APLs.
  • FIG. 6 is a flow chart showing the processing flow of the communication control system according to the first embodiment.
  • FIG. 7 is a diagram illustrating an example of a computer that executes a communication control program;
  • Multipath communication is a technique that uses multiple communication paths to improve fault tolerance and throughput.
  • multipath communication for example, it is possible to pool the resources of multiple routes and expand the bandwidth that can be secured. Also, in multipath communication, high reliability is achieved by broadcast communication to a plurality of paths.
  • Apple Siri (registered trademark) achieves fault tolerance and improved throughput through multipath communication that spans mobile lines and Wi-Fi (registered trademark) lines.
  • protocols that realize multipath communication include SCTP (Stream Control Transmission Protocol), MPTCP (Multipath TCP), MPQUIC (Multipath QUIC), and the like.
  • FIG. 1 is a diagram showing a configuration example of a communication control system according to the first embodiment.
  • the communication control system 1 has an orchestrator 10, a server 21, a server 22, a switch 31, a switch 32, a PE node 41 (Ingress side) and a PE node 42 (Egress side).
  • the orchestrator 10 has a generator 102 and an integrated controller 101 .
  • the server 21 has a tunneling section 211 .
  • the server 22 has a tunneling section 221 .
  • the switch 31 has an identification section 311 , a mapping section 312 and a division section 313 .
  • the switch 32 has a mapping section 321 .
  • the servers 21 and 22 may be implemented with virtual machines or containers.
  • the PE node 41 has VRF (Virtual Routing and Forwarding) 411, VRF412 and VRF413.
  • the PE node 42 has VRF421, VRF422 and VRF423.
  • SR-MPLS Segment Routing-Multi-Protocol Label Switching
  • the identification unit 311 identifies whether the flow input to the transport network (for example, SR-MPLS in FIG. 1) is a multipath communication protocol flow (multipath flow).
  • the identifying unit 311 outputs the flow identified as the multipath flow to the dividing unit 313 .
  • the identifying unit 311 distributes identified flows that are not multipath flows to the plurality of tunneling units 211 .
  • the identification unit 311 distributes to the tunneling unit 211 according to a set M/A (Match/Anction) rule set with granularity according to 5tuple, DSCP, 5QI, and the like.
  • M/A Machine/Anction
  • the mapping unit 312 maps the flow tunneled by the tunneling unit 211 to a path (SR (Segment Routing) path) connecting the ingress-side node and the egress-side node in the transport network.
  • SR Segment Routing
  • the mapping unit 312 maps each flow divided by the tunneling unit 211 to the SR path according to the M/A rule set by the tunneling unit 211 . Conversely, the mapping unit 312 can distribute each flow to the tunneling unit 211 .
  • the tunneling unit 211 tunnels a flow identified by the identification unit 311 as not a multipath communication protocol flow using the multipath communication protocol. For example, the tunneling unit 211 performs split tunneling on the flow. The tunneling unit 211 outputs the tunneled flow to the mapping unit 312 .
  • the tunneling unit 211 inserts the M/A rule into the mapping unit 312 according to the path mapping image developed from the integrated control unit 101 .
  • the M/A rule is a rule used for mapping the input flow group divided by the dividing unit 313 and the SR path.
  • the tunneling unit 211 constantly measures the bandwidth used by the tunneling unit 211, and requests the integrated control unit 101 to update the path mapping image when the bandwidth falls below the guaranteed bandwidth.
  • the division unit 313 divides the flow identified by the identification unit 311 as a multipath communication protocol flow according to the division unit of the multipath communication protocol. For example, if the multipath communication protocol is MPTCP, the dividing unit 313 divides the flow in units of 5 tuples of subflows. For example, the dividing unit 313 performs route division of the flow by rearranging the SID (Segment IDentifier) list.
  • SID Segment IDentifier
  • the integrated control unit 101 acquires the resource usage status and SR path status within the network, and performs various controls.
  • the integrated control unit 101 deploys the tunneling unit 211.
  • the integrated control unit 101 designates a division method and packet scheduling according to application requirements at the time of deployment.
  • the integrated control unit 101 inserts an M/A rule for allocating the input flow to the deployed tunneling unit 211 for the identification unit 311 .
  • Match in the M/A rule is input flow identification information (5tuple, DSCP, 5QI, etc.), and Action is routing.
  • the integrated control unit 101 develops the path mapping image generated by the generation unit 102 to the tunneling unit 211 . Furthermore, the integrated control unit 101 updates the developed path mapping image when a request is received from the tunneling unit 211 or when the situation in the network changes (path disconnection, etc.).
  • the generation unit 102 generates a multipath mapping image according to the application requirements from the network resource usage status and the SR path state acquired by the integrated control unit 101 .
  • tunneling unit 221 and the mapping unit 321 have the same functions as the tunneling unit 211 and the mapping unit 312, respectively.
  • FIG. 2, 3 and 4 are diagrams for explaining the process of adding a dynamic bandwidth to a declared user.
  • Figures 2 and 3 show the initial state, that is, the state in which the user has not declared the addition of the guaranteed bandwidth.
  • the mapping image developed from the integrated control unit 101 to the tunneling unit 211 indicates that the guaranteed bandwidth is "10 Mbps" and that the usable path is only "VLAN(1)". that the path redundancy is "none". VLAN(1) corresponds to VLAN620.
  • the tunneling unit 211 measures the bandwidth used with the NetHogs command. Also, the tunneling unit 211 performs tunneling by MPTCP.
  • the M/A rule inserted from the tunneling unit 211 to the mapping unit 312 is as follows.
  • (Match, Action) (subflow 5tuple (1), set to VLAN (1))
  • (Match, Action) (subflow 5tuple (2), set to VLAN (1))
  • a route is set to a single VLAN for both subflow 5tuple(1) and subflow 5tuple(2).
  • the generation unit 102 selects an SR path based on the network resource usage status and the SR path status, taking into consideration the availability of SR paths.
  • the generation unit 102 has selected the SR path 612 .
  • the integrated control unit 101 updates the mapping image of the tunneling unit 211 so that the guaranteed bandwidth is expanded using the selected SR path and VLAN.
  • the guaranteed bandwidth is "15 Mbps”
  • the available paths are "VLAN(1)” and “VLAN(2)”
  • the path redundancy is " None” is shown.
  • VLAN(1) corresponds to VLAN621.
  • VLAN(2) corresponds to VLAN622.
  • the tunneling unit 211 measures the used bandwidth with the NetHogs command. Also, the tunneling unit 211 performs tunneling by MPTCP.
  • the M/A rule inserted from the tunneling unit 211 to the mapping unit 312 is changed as follows.
  • (Match, Action) (subflow 5tuple (1), set to VLAN (1))
  • (Match, Action) (subflow 5tuple (2), set to VLAN (2))
  • FIG. 5 is a diagram illustrating the process of providing broadcasts to high-reliability requesting APLs.
  • user 51 executes an APL that requires high reliability.
  • mapping image developed from the integrated control unit 101 to the tunneling unit 211 indicates that the guaranteed bandwidth is "10 Mbps", that the available paths are "VLAN(1)” and “VLAN(2)", and that path redundancy is "Yes”.
  • VLAN(1) corresponds to VLAN621.
  • VLAN(2) corresponds to VLAN622.
  • the tunneling unit 211 implements MPTCP tunneling.
  • the tunneling unit 211 changes the MPTCP packet scheduler from "default" to "reduandant". As a result, broadcast communication to all subflows is performed.
  • each subflow is mapped to a different VLAN, and broadcast communication is multipathed and transferred.
  • FIG. 6 is a flowchart showing the processing flow of the communication control system according to the first embodiment. As shown in FIG. 6, first, the identifying unit 311 identifies whether or not the input flow is a multipath flow (step S101).
  • the division unit 313 divides the flow according to the division unit of the multipath communication protocol (step S103).
  • the tunneling unit 211 tunnels (divides) the flow using the multipath communication protocol (step S104).
  • the mapping unit 312 maps the flow divided by the tunneling unit 211 onto the SR path (step S105).
  • the identifying unit 311 identifies whether or not the flow input to the transport network is the flow of the multipath communication protocol.
  • the dividing unit 313 divides the flow identified as the flow of the multipath communication protocol by the identifying unit 311 according to the division unit of the multipath communication protocol.
  • the tunneling unit 211 tunnels a flow identified by the identification unit 311 as not a flow of the multipath communication protocol using the multipath communication protocol.
  • the mapping unit 312 maps the flow tunneled by the tunneling unit 211 to a path connecting the ingress-side node and the egress-side node in the transport network.
  • the communication control system 1 tunnels input flows that are not multipath communication protocol flows using the multipath communication protocol.
  • the communication control system 1 it becomes possible to guarantee the communication requirements of the application in the transport network.
  • the mapping unit 312 maps the flow to either a path passing through the first VLAN or a path passing through the second VLAN according to 5 tuples of the flow tunneled by the tunneling unit 211 .
  • the mapping unit 312 maps one flow tunneled by the tunneling unit 211 so that it is broadcast to both the path through the first VLAN and the path through the second VLAN.
  • each component of each device illustrated is functionally conceptual, and does not necessarily need to be physically configured as illustrated.
  • the specific form of distribution and integration of each device is not limited to the illustrated one, and all or part of them can be functionally or physically distributed or Can be integrated and configured.
  • all or any part of each processing function performed by each device is realized by a CPU (Central Processing Unit) and a program analyzed and executed by the CPU, or hardware by wired logic can be realized as Note that the program may be executed not only by the CPU but also by other processors such as a GPU.
  • CPU Central Processing Unit
  • each device of the communication control system 1 can be implemented by installing a communication control program for executing the above communication control processing as package software or online software in a desired computer.
  • the information processing device can function as the server 21 or the switch 31 by causing the information processing device to execute the communication control program.
  • FIG. 7 is a diagram showing an example of a computer that executes a communication control program.
  • the computer 1000 has a memory 1010 and a CPU 1020, for example.
  • Computer 1000 also has hard disk drive interface 1030 , disk drive interface 1040 , serial port interface 1050 , video adapter 1060 and network interface 1070 . These units are connected by a bus 1080 .
  • the memory 1010 includes a ROM (Read Only Memory) 1011 and a RAM (Random Access Memory) 1012 .
  • the ROM 1011 stores a boot program such as BIOS (Basic Input Output System).
  • BIOS Basic Input Output System
  • Hard disk drive interface 1030 is connected to hard disk drive 1090 .
  • a disk drive interface 1040 is connected to the disk drive 1100 .
  • a removable storage medium such as a magnetic disk or optical disk is inserted into the disk drive 1100 .
  • Serial port interface 1050 is connected to mouse 1110 and keyboard 1120, for example.
  • Video adapter 1060 is connected to display 1130, for example.
  • the hard disk drive 1090 stores, for example, an OS 1091, application programs 1092, program modules 1093, and program data 1094. That is, a program that defines each process of the communication control system 1 is implemented as a program module 1093 in which computer-executable code is described. Program modules 1093 are stored, for example, on hard disk drive 1090 .
  • the hard disk drive 1090 stores a program module 1093 for executing processing similar to the functional configuration in the communication control system 1 .
  • the hard disk drive 1090 may be replaced by an SSD (Solid State Drive).
  • the setting data used in the processing of the above-described embodiment is stored as program data 1094 in the memory 1010 or the hard disk drive 1090, for example. Then, the CPU 1020 reads the program modules 1093 and program data 1094 stored in the memory 1010 and the hard disk drive 1090 to the RAM 1012 as necessary, and executes the processes of the above-described embodiments.
  • the program modules 1093 and program data 1094 are not limited to being stored in the hard disk drive 1090, but may be stored in a removable storage medium, for example, and read by the CPU 1020 via the disk drive 1100 or the like. Alternatively, the program modules 1093 and program data 1094 may be stored in another computer connected via a network (LAN (Local Area Network), WAN (Wide Area Network), etc.). Program modules 1093 and program data 1094 may then be read by CPU 1020 through network interface 1070 from other computers.
  • LAN Local Area Network
  • WAN Wide Area Network

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Une unité d'identification (311) identifie si un flux devant être entré dans un réseau de transport est un flux d'un protocole de communication à chemins multiples. Une unité de division (313) divise, le long d'unités de division du protocole de communication à chemins multiples, un flux qui a été identifié par l'unité d'identification (311) comme étant un flux du protocole de communication à chemins multiples. Une unité de tunnellisation (211) utilise le protocole de communication à chemins multiples pour effectuer une tunnellisation d'un flux identifié par l'unité d'identification (311) comme n'étant pas un flux du protocole de communication à chemins multiples. Une unité de mise en correspondance (312) met en correspondance le flux ayant fait l'objet d'une tunnellisation par l'unité de tunnellisation (211) avec un chemin connectant un nœud côté entrée et un nœud côté sortie dans le réseau de transport.
PCT/JP2021/030268 2021-08-18 2021-08-18 Système de commande de communication, procédé de commande de communication et programme de commande de communication WO2023021634A1 (fr)

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JP2023542111A JP7544284B2 (ja) 2021-08-18 2021-08-18 通信制御システム、通信制御方法及び通信制御プログラム
PCT/JP2021/030268 WO2023021634A1 (fr) 2021-08-18 2021-08-18 Système de commande de communication, procédé de commande de communication et programme de commande de communication

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010504047A (ja) * 2006-09-13 2010-02-04 アサンキア ネットワークス， インコーポレイテッド マルチパス環境におけるトランスポートプロトコルの性能を改善するシステムおよび方法
JP2014530564A (ja) * 2011-09-22 2014-11-17 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ ワイヤレス通信ネットワークにおけるマルチパストランスポート接続のための動的なサブフロー制御
JP2017092692A (ja) * 2015-11-10 2017-05-25 日本電信電話株式会社 データ伝送制御システム及び方法、並びに、データ伝送制御プログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010504047A (ja) * 2006-09-13 2010-02-04 アサンキア ネットワークス， インコーポレイテッド マルチパス環境におけるトランスポートプロトコルの性能を改善するシステムおよび方法
JP2014530564A (ja) * 2011-09-22 2014-11-17 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ ワイヤレス通信ネットワークにおけるマルチパストランスポート接続のための動的なサブフロー制御
JP2017092692A (ja) * 2015-11-10 2017-05-25 日本電信電話株式会社 データ伝送制御システム及び方法、並びに、データ伝送制御プログラム

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