WO2023276220A1 - 中継装置、中継方法及び通信システム - Google Patents
中継装置、中継方法及び通信システム Download PDFInfo
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Definitions
- the present disclosure relates to relay devices, relay methods, and communication systems.
- a method of controlling network communication quality by performing priority QoS: Quality of Service
- QoS Quality of Service
- high priority is set for high priority traffic (such as VoIP call traffic)
- priority processing is performed in a network queue, or low priority traffic is shaped. to control communication quality.
- this disclosure proposes a mechanism that can further improve the network environment.
- a relay device connects to an upstream network via a plurality of communication paths and relays communication between the upstream network and the downstream network.
- the relay device has a control unit.
- the control unit acquires the communication status of at least one of the plurality of communication channels.
- the control unit selects one communication path from among the plurality of communication paths according to the communication status.
- the control unit connects to the upstream network using the selected communication path.
- FIG. 1 is a diagram illustrating a configuration example of a communication system according to a first embodiment of the present disclosure
- FIG. 1 is a diagram for explaining communication paths according to a first embodiment of the present disclosure
- FIG. 1 is a block diagram showing a configuration example of an MDF board according to a first embodiment of the present disclosure
- FIG. 1 is a block diagram showing a configuration example of an ONU according to a first embodiment of the present disclosure
- FIG. 1 is a block diagram showing a configuration example of a terminal device according to a first embodiment of the present disclosure
- FIG. FIG. 4 is a diagram for explaining an example of communication channel quality request information according to an embodiment of the present disclosure
- FIG. 4 is a sequence diagram showing an example of communication processing according to the first embodiment of the present disclosure
- FIG. 7 is a block diagram showing a configuration example of an ONU according to the second embodiment of the present disclosure
- FIG. FIG. 7 is a block diagram showing a configuration example of an analysis unit according to the second embodiment of the present disclosure
- FIG. FIG. 11 is a sequence diagram showing an example of communication processing according to the second embodiment of the present disclosure
- FIG. 11 is a block diagram showing a configuration example of an MDF board according to a third embodiment of the present disclosure
- FIG. FIG. 12 is a sequence diagram showing an example of communication processing according to the third embodiment of the present disclosure
- FIG. 11 is a diagram for explaining an example of a communication channel according to the second modified example of the present disclosure
- FIG. 12 is a diagram for explaining an example of a communication channel according to the third modified example of the present disclosure
- FIG. FIG. 11 is a block diagram showing a configuration example of an MDF board according to a third modified example of the present disclosure
- FIG. 13 is a diagram for explaining another example of a communication channel according to the third modified example of the present disclosure
- FIG. FIG. 11 is a block diagram showing a configuration example of a terminal device according to a third modified example of the present disclosure
- FIG. 12 is a diagram for explaining a communication situation according to the fourth embodiment of the present disclosure
- FIG. FIG. 14 is a sequence diagram showing the flow of communication processing according to the fourth embodiment of the present disclosure
- 1 is a hardware configuration diagram showing an example of a computer 1000 that implements functions of an MDF board;
- the QoS control described above is a QoS control in a single network, so if the network bandwidth is full, the bit rate of even high-priority traffic may drop or the traffic may be blocked. There is a risk that it will be lost.
- Japanese Patent Application Laid-Open No. 2015-27092 discloses a technique for selecting an optimum communication channel based on the QoS of a plurality of communication channels.
- such technology assumes a single service and does not assume a network in which multiple services are provided.
- the system transmits sequential bursts of packets through a first network interface.
- the system also generates the bandwidth of the first network interface based on the size of the packet and the timestamp recorded when the packet is received at the receiving node.
- the system routes the data flow of sequential packets through multiple network connections based on the bandwidth. This allows the system to reduce the impact on transmission efficiency due to the reclaim process.
- this technology does not consider the priority of packets.
- a relay device connects to an upstream network via a plurality of communication paths.
- a relay device relays communication between such upstream and downstream networks.
- the upstream network may be an external network such as a WAN, and the downstream network may be a network constructed for each household in a collective housing.
- a plurality of communication paths may include a network (for example, a private line including an optical line and local 5G) built in a collective housing.
- the relay device is, for example, an ONU (Optical Network Unit).
- the relay device is connected to the MDF (Main Distributing Frame) board, and for example, establishes multiple communication paths (eg, wired private line and wireless local 5G) with the MDF board. do.
- the relay device acquires the communication status of at least one of the multiple communication paths (for example, the private line), and selects one of the multiple communication paths according to the acquired communication status.
- the relay device connects to the upstream network using the selected communication path.
- the relay device selects one of the plurality of communication paths according to the communication status of at least one of the plurality of communication paths.
- the relay device can select another communication path and relay communication between the downstream network and the upstream network, further improving the network environment. be able to.
- FIG. 1 is a diagram showing a configuration example of a communication system 1 according to the first embodiment of the present disclosure.
- the communication system 1 includes an MDF board 10, an ONU 20, a terminal device 30, and a base station 40.
- wired communication is illustrated by a solid line and wireless communication is illustrated by a dotted line.
- the MDF board 10 is provided, for example, in a collective housing such as a condominium, and is connected to a network constructed in each dwelling (hereinafter also referred to as a home network or a premises line) and an external network N (an example of an upstream network) outside the collective housing. ) is a relay device that relays communication between The MDF board 10 is connected to the home network via the ONU 20 or base station 40 .
- the ONU 20 is a relay device that connects to the external network N via the MDF board 10 and relays communication between the home network and the external network N.
- the ONU 20 in FIG. 1 is connected to the terminal device 30 wirelessly or by wire.
- the ONU 20 connects to the external network N through the MDF board 10 by performing wired communication with the MDF board 10 .
- the ONU 20 connects to the external network N via the base station 40 by performing wireless communication with the base station 40 .
- the ONU 20 connects to the external network N using two communication paths, the communication path via the MDF board 10 and the communication path via the base station 40 .
- the terminal device 30 is a client device that is placed in each dwelling of a collective dwelling and used by residents (users) within the dwelling.
- the terminal device 30 includes, for example, a television, a smart phone, a PC, and the like.
- the terminal device 30 can be various IoT (Internet of Things) terminals such as home electric appliances having communication functions.
- IoT Internet of Things
- FIG. 1 shows a case where the ONU 20 directly communicates with the terminal device 30 by wireless communication
- the present invention is not limited to this.
- the ONU 20 may communicate with the terminal device 30 via a wireless router (not shown) installed in the residence.
- a home network is constructed by at least one terminal device 30 and ONU 20 in a house.
- the base station 40 is, for example, a local 5G (or private 5G) base station that is a private 5G service that can be used by residents of an apartment complex.
- the communication system 1 may have a local 5G core network (not shown) in addition to the base station 40 .
- the base station 40 connects with the ONU 20 and the MDF board 10 .
- ONU 20 communicates with MDF board 10 via local 5G including base station 40 .
- FIG. 2 is a diagram for explaining communication paths according to the first embodiment of the present disclosure.
- illustration of some components is omitted.
- ONU 20 connects to external network N using communication path R1 and communication path R2.
- the communication path R1 is, for example, a communication path of a wired network built in an apartment complex.
- the ONU 20 connects to the external network N by connecting to the MDF board 10 using the communication path R1.
- the communication path R2 is, for example, a communication path of a wireless network such as local 5G built in an apartment complex.
- the ONU 20 connects with the base station 40 using the communication path R2.
- a base station 40 connects to an external network N via the MDF board 10 .
- ONU 20 connects with external network N via base station 40 (ie, local 5G) and MDF board 10 .
- FIG. 3 is a block diagram showing a configuration example of the MDF board 10 according to the first embodiment of the present disclosure.
- the MDF board 10 shown in FIG. 3 includes a communication section 110, a storage section 120, and a control section .
- the communication unit 110 is a communication interface for communicating with other devices.
- the communication unit 110 may be a network interface or a device connection interface.
- the communication unit 110 may include a LAN (Local Area Network) interface such as a NIC (Network Interface Card), or a USB interface configured by a USB (Universal Serial Bus) host controller, a USB port, etc.
- LAN Local Area Network
- NIC Network Interface Card
- USB Universal Serial Bus
- the communication unit 110 may be a wired interface or a wireless interface.
- the communication unit 110 functions as communication means for the MDF board 10.
- the communication unit 110 communicates with the ONU 20 , the base station 40 and the external network N under the control of the control unit 130 .
- the communication unit 110 includes, for example, a 1_1st communication I/F (interface) 111_1, a 1_2nd communication I/F 111_2, and a second communication I/F 112.
- the 1_1 communication I/F 111_1 is a communication interface for communicating with the ONU 20, for example.
- the 1_2 communication I/F 111_2 is a communication interface for communicating with the base station 40, for example.
- the second communication I/F 112 is a communication interface for communicating with the external network N, for example.
- the storage unit 120 is a data readable/writable storage device such as a DRAM (Dynamic Random Access Memory), an SRAM (Static Random Access Memory), a flash memory, a hard disk, or the like.
- the storage unit 120 functions as storage means for the MDF board 10 .
- the storage unit 120 includes a communication path DB (database) 121, for example.
- the communication path DB 121 is a database that stores communication paths up to the ONUs 20 .
- the communication path DB 121 is used when the control unit 130 determines which one of the plurality of communication paths R1 and R2 should be used to communicate with the ONU 20 .
- the communication path DB 121 is a routing table.
- the control section 130 is a controller that controls each section of the MDF board 10 .
- the control unit 130 is implemented by a processor such as a CPU (Central Processing Unit) or MPU (Micro Processing Unit), for example.
- the control unit 130 is implemented by the processor executing various programs stored in the storage device inside the MDF board 10 using a RAM (Random Access Memory) or the like as a work area.
- the control unit 130 may be realized by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Gate Array
- the control unit 130 includes a communication channel determining unit 131 and a communication channel setting unit 132.
- Each block (communication channel determination unit 131 and communication channel setting unit 132) constituting the control unit 130 is a functional block indicating the function of the control unit 130.
- FIG. These functional blocks may be software blocks or hardware blocks.
- each of the functional blocks described above may be one software module realized by software (including microprograms), or may be one circuit block on a semiconductor chip (die). Of course, each functional block may be one processor or one integrated circuit.
- the configuration method of the functional blocks is arbitrary. Note that the control unit 130 may be configured by functional units different from the functional blocks described above.
- the communication path determination unit 131 determines a communication path for relaying data to the ONU 20 based on the communication path information stored in the communication path DB 121 .
- the communication path information includes, for example, information that associates an application (for example, a call application, a video application, a file transfer application, etc.) executed on the terminal device 30 with a communication path.
- the communication channel information may include information that associates the type of data to be relayed (audio data or image data) with the communication channel.
- the communication path setting unit 132 writes the communication path information to the communication path DB 121.
- the communication path setting unit 132 registers, for example, the communication path information notified from the ONU 20 in the communication path DB 121 .
- the communication path setting unit 132 may acquire communication path quality information notified from the ONU 20, and generate and register communication path information based on the communication path quality information. Details of the channel quality information will be described later.
- FIG. 4 is a block diagram showing a configuration example of the ONU 20 according to the first embodiment of the present disclosure.
- ONU 20 shown in FIG. 4 includes communication section 210 , storage section 220 and control section 230 .
- the communication unit 210 is a communication interface for communicating with other devices.
- the communication unit 210 may be a network interface or a device connection interface.
- the communication unit 210 may include a LAN (Local Area Network) interface such as a NIC (Network Interface Card), or a USB interface configured by a USB (Universal Serial Bus) host controller, USB port, etc.
- LAN Local Area Network
- the communication unit 210 may be a wired interface or a wireless interface.
- the communication unit 210 may have functions for wireless LAN (Local Area Network) communication such as WiFi (registered trademark), and mobile communication such as LTE (Long Term Evolution) and 5G.
- the communication unit 210 functions as communication means for the ONU 20.
- the communication unit 210 communicates with the MDF board 10 , the base station 40 and the terminal device 30 under the control of the control unit 230 .
- the communication unit 210 includes, for example, a 1_1 communication I/F 211_1, a 1_2 communication I/F 211_2, a 2_1 communication I/F 212_1, and a 2_2 communication I/F 212_2.
- the 1_1 communication I/F 211_1 is a wired communication interface for performing wired communication with the MDF board 10, for example.
- the 1_2 communication I/F 211_2 is a wireless communication interface for performing wireless communication with the base station 40, for example.
- the 2_1 communication I/F 212_1 is a wired communication interface for performing wired communication with the terminal device 30, for example.
- the 2_2 communication I/F 212_2 is a wireless communication interface for performing wireless communication with the terminal device 30, for example.
- the storage unit 220 is a data readable/writable storage device such as a DRAM (Dynamic Random Access Memory), an SRAM (Static Random Access Memory), a flash memory, a hard disk, or the like.
- the storage unit 220 functions as storage means for the ONU 20 .
- the storage unit 220 includes a communication path DB (database) 221, for example.
- the communication path DB 221 is a database storing communication paths up to the MDF board 10 .
- the communication path DB 221 is used when the control unit 230 determines which of the plurality of communication paths R1 and R2 should be used to communicate with the MDF board 10 .
- the communication path DB 221 is a routing table.
- the control unit 230 is a controller that controls each unit of the ONU 20 .
- the control unit 230 is implemented by a processor such as a CPU (Central Processing Unit) or MPU (Micro Processing Unit).
- the control unit 230 is implemented by the processor executing various programs stored in the storage device inside the ONU 20 using a RAM (Random Access Memory) or the like as a work area.
- the control unit 230 may be realized by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Gate Array
- the control unit 230 includes a communication channel determining unit 231 and a communication channel setting unit 232.
- Each block (communication channel determination unit 231 and communication channel setting unit 232) constituting the control unit 230 is a functional block indicating the function of the control unit 230.
- FIG. These functional blocks may be software blocks or hardware blocks.
- each of the functional blocks described above may be one software module realized by software (including microprograms), or may be one circuit block on a semiconductor chip (die).
- each functional block may be one processor or one integrated circuit.
- the configuration method of the functional blocks is arbitrary. Note that the control unit 230 may be configured by functional units different from the functional blocks described above.
- the communication path decision unit 231 decides the communication path for data to be relayed to the MDF board 10 based on the communication path information stored in the communication path DB 221 .
- the communication path determination unit 231 determines the corresponding communication I/F by determining the communication path of the data to be relayed to the MDF board 10 .
- the communication path information includes, for example, information that associates an application (for example, a call application, a video application, a file transfer application, etc.) executed on the terminal device 30 with a communication path.
- the communication channel information may include information that associates the type of data to be relayed (audio data or image data) with the communication channel.
- the communication path setting unit 232 writes the communication path information to the communication path DB 221.
- the communication channel setting unit 232 generates and registers communication channel information based on the communication channel quality information notified from the terminal device 30, for example. Details of the channel quality information will be described later.
- FIG. 5 is a block diagram showing a configuration example of the terminal device 30 according to the first embodiment of the present disclosure.
- the terminal device 30 shown in FIG. 5 includes a communication section 310 , a storage section 320 , a control section 330 and an application section 340 .
- the communication unit 310 is a communication interface for communicating with other devices.
- the communication unit 310 may be a network interface or a device connection interface.
- the communication unit 310 may include a LAN (Local Area Network) interface such as a NIC (Network Interface Card), or a USB interface configured by a USB (Universal Serial Bus) host controller, USB port, etc.
- LAN Local Area Network
- the communication unit 310 may be a wired interface or a wireless interface.
- the communication unit 310 may have functions for wireless LAN (Local Area Network) communication such as WiFi (registered trademark), and mobile communication such as LTE (Long Term Evolution) and 5G.
- the communication unit 310 functions as communication means for the terminal device 30. Communication unit 310 communicates with ONU 20 under the control of control unit 330 .
- the storage unit 320 is a data readable/writable storage device such as a DRAM (Dynamic Random Access Memory), an SRAM (Static Random Access Memory), a flash memory, a hard disk, or the like.
- the storage unit 320 functions as storage means of the terminal device 30 .
- the application unit 340 is one or more applications that provide services to the terminal device 30 .
- the application unit 340 is realized, for example, by running a program on the CPU (Central Processing Unit), and provides various services such as video calls and FTP (File Transfer Protocol) to the user using the terminal device 30. .
- CPU Central Processing Unit
- FTP File Transfer Protocol
- the control unit 330 is a controller that controls each unit of the terminal device 30 .
- the control unit 330 is implemented by a processor such as a CPU (Central Processing Unit) or MPU (Micro Processing Unit), for example.
- the control unit 330 is implemented by the processor executing various programs stored in the storage device inside the terminal device 30 using a RAM (Random Access Memory) or the like as a work area.
- the control unit 330 may be realized by an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).
- ASIC Application Specific Integrated Circuit
- FPGA Field Programmable Gate Array
- the control unit 330 includes a notification unit 331.
- a block (notification unit 331 ) configuring the control unit 330 is a functional block indicating the function of the control unit 330 .
- This functional block may be a software block or a hardware block.
- the functional blocks described above may be one software module realized by software (including microprograms), or one circuit block on a semiconductor chip (die).
- the functional block may be one processor or one integrated circuit.
- the configuration method of the functional blocks is arbitrary. Note that the control unit 330 may be configured by functional units different from the functional blocks described above.
- the notification unit 331 generates communication channel quality request information and notifies the ONU 20 of it.
- the notification unit 331 generates communication channel quality request information including communication channel quality corresponding to an application executed by the application unit 340, for example.
- the notification unit 331 notifies the ONU 20 of the generated channel quality request information, thereby requesting the ONU 20 to communicate the traffic related to the application with the quality included in the channel quality request information.
- the application unit 340 executes various types of applications.
- the terminal device 30 may run applications such as FTP and video calling.
- FTP is an application that is delay tolerant but requires large amounts of data to be sent and received.
- a video call application is an application that places strict requirements on both delay and transmission/reception data capacity.
- the network characteristics of the applications executed by the application unit 340 are completely different for each application. Therefore, it is desirable to select an appropriate network that meets the requirements of each application.
- the network characteristics (for example, communication quality) are specified by the application executed by the application unit 340.
- the notification unit 331 acquires characteristic information about network characteristics from the application unit 340 .
- the application unit 340 may, for example, pass characteristic information to the notification unit 331 as an argument when the program opens a socket, or may pass a network request script indicating the characteristic information to the notification unit 331 .
- the notification unit 331 notifies the ONU 20 of information regarding the application executed by the application unit 340 and the communication quality (for example, characteristic information) required by the application as communication path quality request information. For example, when the video call application is executed by the application unit 340, the notification unit 331 requests the ONU 20 to preferentially handle the traffic of the video notification application by notifying the communication channel quality request information.
- the communication quality for example, characteristic information
- the notification unit 331 uses, for example, DiffServ in the IP header to notify the communication channel quality request information.
- the notification unit 331 may notify the channel quality request information using the L2 VLAN tag.
- a JSON format file (communication path quality request information) may be sent using a control path established with the ONU 20 .
- FIG. 6 is a diagram for explaining an example of channel quality request information according to the embodiment of the present disclosure.
- usage fees for using local 5G services may be incurred, for example, depending on the amount of traffic.
- using local 5G instead of guaranteeing a certain level of communication quality may incur usage charges.
- the notification unit 331 uses a billing bearer that incurs a usage fee but guarantees communication quality, such as local 5G, for traffic that requires low delay and large capacity, such as a video call application. communication channel quality request information is generated.
- the notification unit 331 sets "metered_bearer" to "true” to generate channel quality request information including the fact that the charge bearer may be used.
- the channel quality request information shown in FIG. 6 includes, for example, the minimum throughput ("throughput”, designated as “10 Mbps” in FIG. 6) and priority ("Priority", designated as “High”).
- throughput designated as "10 Mbps” in FIG. 6
- priority designated as “High”
- the communication channel quality request information includes information about a specific port number (“Port”, designated as “10080” in FIG. 6) and delay amount (not shown, for example, “100 ms or less”), good.
- the notification unit 331 transmits the communication path quality request information to the ONU 20 by including it in, for example, a control packet.
- the notification unit 331 After establishing a control path with the ONU 20, the notification unit 331 notifies the ONU 20 of the communication channel quality request information at an arbitrary timing.
- arbitrary timing include timing when an application executed by the terminal device 30 changes and timing when the terminal device 30 connects to the ONU 20 .
- the communication path setting unit 232 of the ONU 20 described above sets a routing rule based on the received communication path quality request information, and writes it in the communication path DB 221 .
- the communication path setting unit 232 selects a low-cost communication path whose communication quality (for example, bandwidth) is not guaranteed (for example, a premises line in an apartment complex) as a communication path for traffic set to a low priority in the communication path quality request information. Select the fixed line communication path R1) using
- the communication channel setting unit 232 guarantees high stability and communication quality (for example, bandwidth) as a communication channel for traffic set to high priority in the communication channel quality request information, but an expensive communication channel (for example, Select the local 5G communication path R2) built in the collective housing.
- high stability and communication quality for example, bandwidth
- an expensive communication channel for example, Select the local 5G communication path R2
- the communication path R1 may be selected as the traffic communication path.
- the communication path setting unit 232 notifies the MDF board 10 of the determined routing rule, for example.
- the MDF board 10 describes the received routing rule in the communication path DB 121 .
- the ONU 20 can select a communication path (that is, a communication I/F corresponding to the communication path) in accordance with the priority of traffic in communication between the ONU 20 and the MDF board 10, thereby The internal network environment can be further improved.
- FIG. 7 is a sequence diagram showing an example of communication processing according to the first embodiment of the present disclosure.
- the terminal device 30 transmits to the ONU 20 a connection request for establishing a control path for communication channel control with the ONU 20 (step S101). For example, when the terminal device 30 sets the ONU 20 as its own default gateway, the terminal device 30 requests the ONU 20 to establish a control path.
- the ONU 20 establishes a control path according to the request (S102).
- the communication path used to establish the control path may be the communication path (for example, wireless LAN or wired cable) actually used for data communication between the terminal device 30 and the ONU 20, or another communication path. It may be a communication channel (for example, Bluetooth (registered trademark)).
- the terminal device 30 makes a communication channel quality request by transmitting the communication channel quality request information to the ONU 20 at any timing described above (step S103).
- the ONU 20 sets the communication path based on the received communication path quality request information (step S104). For example, the ONU 20 sets the communication path for traffic of application app1 set to low priority to communication path R1, and sets the communication path for traffic of application app2 set to high priority to communication path R2.
- the ONU 20 notifies the MDF board 10 of the communication path information regarding the set communication path (step S105).
- the MDF board 10 sets the communication path based on the received communication path information (step S106).
- transmission data is generated by executing application app1 on the terminal device 30 .
- the terminal device 30 transmits transmission data (app1) to the ONU 20 (step S107).
- the ONU 20 determines the communication path for the received transmission data (app1) (step S108). For example, the ONU 20 determines the communication path for transmission data (app1) to be the communication path R1. The ONU 20 transmits the transmission data (app1) to the MDF board 10 based on the determined communication path R1 (step S109).
- transmission data is generated by executing application app2 on the terminal device 30 .
- the terminal device 30 transmits transmission data (app2) to the ONU 20 (step S110).
- the ONU 20 determines the communication path for the received transmission data (app2) (step S111). For example, the ONU 20 determines the communication path for transmission data (app2) to be the communication path R2. The ONU 20 transmits transmission data (app2) to the MDF board 10 via the base station 40 (local 5G) based on the determined communication path 2 (step S112).
- control path establishment processing is also performed between the ONU 20 and the MDF board 10.
- FIG. 7 For example, a notification channel is created between the ONU 20 and the MDF board 10 when the ONU 20 is activated.
- the ONU 20 transmits a connection request for establishing a control path to the MDF board 10 at startup.
- the MDF board 10 receives the connection request and establishes a control path.
- ONU 20 may be authenticated and authorized.
- the data communication path is determined according to the communication path set by the ONU 20 based on the communication path quality request information. That is, in the first embodiment, the ONU 20 or the MDF board 10 statically determines the data communication path, and performs data routing according to a rule that is always determined according to the type of application or the like. Not limited. For example, when there is a possibility that the communication quality required by the terminal device 30 cannot be satisfied, the ONU 20 or the MDF board 10 may switch the communication path. Such a case will be described as a second embodiment.
- FIG. 8 is a block diagram showing a configuration example of an ONU 20A according to the second embodiment of the present disclosure. 8 differs from the ONU 20 in FIG. 5 in that the controller 230A of the ONU 20A shown in FIG.
- the analysis unit 233 acquires the communication status of the upstream network by predicting and analyzing the communication status of the upstream network.
- 232 A of communication-path setting parts set the routing rule according to a communication condition, and 231 A of communication-path determination parts select a communication path based on the determined routing rule. This enables the ONU 20A to select a communication path according to the communication status of the upstream network.
- the analysis unit 233 stores a packet counter of packets transmitted and received with each terminal device 30 accommodated in the ONU 20 and a packet counter of the interface on the MDF board 10 side (WAN (Wide Area Network) side). Monitor. Based on the monitoring results of these packet counters, the analysis unit 233 predicts the congestion (communication status) of the upstream network (private line).
- WAN Wide Area Network
- the analysis unit 233 collects L2 counters and/or L3 counters from the counters of the I/Fs (eg, 1_1 and 1_2 communication I/Fs 211_1 and 211_2) connected to the terminal device 30 . Further, the analysis unit 233 collects the L2 counter and/or the L3 counter from the counters of the I/F (for example, the 2_1 communication I/F 212_1) connected to the MDF board 10 .
- the analysis unit 233 acquires the communication status by predicting the congestion of the communication path (in-house line) with the MDF board 10 based on the collected information.
- FIG. 9 is a block diagram showing a configuration example of the analysis unit 233 according to the second embodiment of the present disclosure.
- the analysis unit 233 shown in FIG. 9 includes a parameter acquisition unit 2331 , a prediction unit 2332 and a determination unit 2333 .
- the parameter acquisition unit 2331 acquires communication parameters as input parameters for the prediction unit 2332 .
- the parameter acquisition unit 2331 acquires communication parameters from the communication unit 210, for example. An example of the input parameter group will be described later.
- the prediction unit 2332 receives the input parameter group acquired by the parameter acquisition unit 2331, and outputs the communication status prediction result to the determination unit 2333 as an output.
- the prediction unit 2332 has a predictor, for example, and uses the predictor to predict the communication status.
- the predictor is generated in advance, for example, by learning using parameters from past communications.
- the parameters used for the input of the predictor include the following parameters. ⁇ Throughput ⁇ Packet queue length ⁇ TCP (Transmission Control Protocol) error value ⁇ Number of retransmissions ⁇ Throughput for each application ⁇ RTT (Round Trip Time) for a specific host ⁇ Error rate of ICMP (Internet Control Message Protocol)
- the following parameters may be obtained from the MDF board 10 .
- ⁇ Packet counter ⁇ Error ⁇ Throughput of I/F (for example, 1_1 communication I/F 111_1, 2nd communication I/F 112 (see Fig. 3))
- ⁇ Packet queue length ⁇ Result of trace route ⁇ Speed of link ⁇ Minimum bandwidth ⁇ Reliability ⁇ Load ⁇ Minimum MTU (Maximum Transmission Unit)
- the predictor takes the expected communication quality metric (for example, throughput and delay) as the correct label and learns a regression model that predicts that value.
- the predictor for example, assigns "1" when the required throughput is not satisfied and "0" when it is satisfied, and learns a classification problem to classify when the communication is degraded and when it is not. good.
- a model used as a predictor may be, for example, an RNN (Recurrent Neural Network) such as an LSTM (Long Short Term Memory), or simple deep learning. Also, the model used may be a model represented by a simple linear polynomial.
- the parameter acquisition unit 2331 may acquire from the MDF board 10 the congestion status of the PoP, which is the connection point with the ISP, and the congestion status of the station building itself, as inputs to the predictor of the prediction unit 2332 .
- the determination unit 2333 acquires the congestion situation predicted by the prediction unit 2332, and determines whether or not the communication channel quality required by the terminal device 30 can be satisfied based on the congestion situation that is the prediction result. When determining that the communication channel quality is not satisfied, the determination unit 2333 requests the communication channel setting unit 232A to rewrite (update) the communication channel setting.
- the analysis unit 233 performs these analyzes (predictions and determinations), for example, at predetermined intervals.
- the communication channel setting unit 232A updates the communication channel setting according to the determination result of the determination unit 2333.
- the communication path setting unit 232A sets, for example, a routing rule that uses a private line (selects the communication path R1) and writes it to the communication path DB 221.
- the communication path setting unit 232 ⁇ /b>A sets, for example, a routing rule via local 5G (selects the communication path 2 ) without using a private line, and writes it to the communication path DB 221 .
- the analysis by the analysis unit 233 and the communication channel setting by the communication channel setting unit 232A may be performed for each application of the terminal device 30.
- the ONU 20 may perform analysis and communication path setting for all the terminal devices 30 accommodated.
- the ONU 20 updates the communication path settings of all the terminal devices 30 accommodated, assuming that congestion has occurred when the predetermined communication path quality cannot be satisfied.
- the ONU 20 sets the communication channel for the communication of the terminal device 30 as the private line (communication channel R1).
- the ONU 20 sets the communication channel for communication of the terminal device 30 via local 5G (communication channel 2).
- the communication channel determination unit 231A determines the communication channel so that the transmission data from the terminal device 30 is transmitted through the communication channel set by the communication channel setting unit 232A. For example, when the communication status of the private line of the upstream network satisfies the communication path quality required by the terminal device 30, the communication path determination unit 231A determines the private line (communication path R1) as the transmission data communication path. On the other hand, if the communication status of the private line of the upstream network does not satisfy the communication channel quality required by the terminal device 30, the communication path determination unit 231A is determined as the transmission data communication path.
- the ONU 20 predicts the communication status, and switches the communication path to local 5G when it is determined that the communication status cannot satisfy the communication path quality request of the terminal device 30 as a result of the prediction. As a result, the ONU 20 can further improve the network environment while suppressing an increase in cost (charging).
- FIG. 10 is a sequence diagram showing an example of communication processing according to the second embodiment of the present disclosure. Note that the same processing as in FIG. 7 is given the same reference numerals, and the description thereof is omitted.
- the ONU 20 that has acquired the communication channel quality request analyzes the communication status of the private line and sets the communication channel according to the analysis result (step S201).
- the private line is not congested and the communication status of the private line satisfies the communication channel quality request from the terminal device 30 .
- the ONU 20 selects the private line (communication path R1).
- transmission data is generated by executing application app1 on the terminal device 30 .
- the terminal device 30 transmits transmission data (app1) to the ONU 20 (step S202).
- the ONU 20 determines the communication path for the received transmission data (app1) (step S203).
- the ONU 20 determines the communication path for transmission data (app1) to be the communication path R1.
- the ONU 20 uses the communication path R1 to transmit the transmission data (app1) to the MDF board 10 (step S204).
- the ONU 20 analyzes the communication status and sets the communication path (step S205). Such analysis and communication path setting are performed, for example, at predetermined intervals.
- the ONU 20 analyzes that the private line is congested and determines that the communication status of the private line does not satisfy the communication channel quality request from the terminal device 30 .
- the ONU 20 sets up a communication channel according to the communication channel quality request of the terminal device 30 .
- the ONU 20 selects the private line (communication path R1).
- the ONU 20 selects the local 5G (communication channel R2).
- the communication condition does not satisfy the communication channel quality required by the terminal device 30 and the ONU 20 selects the local 5G (communication channel R2).
- the ONU 20 transmits setting information regarding the communication path set in step S205 to the MDF board 10 (step S206).
- the MDF board 10 sets the communication path based on the acquired setting information (step S207).
- the transmission data (app1) generated by executing the application app1 on the terminal device 30 is transmitted to the ONU 20 (step S208), and the ONU 20 determines the communication path (step S209).
- a communication path via local 5G is determined.
- the ONU 20 transmits transmission data (app1) to the base station 40 (step S210).
- the base station 40 transmits the received transmission data (app1) to the MDF board 10 via the local 5G (step S211).
- the ONU 20 relays data of the same application app1 through different communication paths according to the communication status of the local line.
- the communication system 1 can further improve the network environment.
- the ONU 20 predicts the communication status, but the present invention is not limited to this.
- the MDF board 10 may predict the communication status. Such a case will be described as a third embodiment.
- FIG. 11 is a block diagram showing a configuration example of the MDF board 10A according to the third embodiment of the present disclosure.
- the MDF board 10A shown in FIG. 11 differs from the MDF board 10 shown in FIG.
- the analysis unit 133 observes the packet counter flowing through the upstream I/F (second communication I/F 112) of the MDF board 10A. Based on the observation results, the analysis unit 133 analyzes and monitors whether the throughput of traffic flowing from each house (ONU 20) on the downstream side exceeds the upper limit throughput of the upstream (WAN). When the traffic volume on the downstream side is about to exceed the throughput on the WAN side, the analysis unit 133 notifies the instruction unit 134 to that effect.
- the instruction unit 134 Upon receiving the notification from the analysis unit 133, the instruction unit 134 broadcasts to the ONUs 20 throughput information indicating that the upper limit throughput has been reached. Note that the instruction unit 134 may notify each ONU 20 of the throughput information by unicast.
- the ONU 20 that receives the throughput information adjusts the traffic by, for example, throttling the flow that uses a large amount of traffic and restricting the flow rate.
- the ONU 20 reduces the amount of traffic flowing into the MDF board 10A by throttling the flow of downloading update files such as games and OS.
- throttling is not performed for high-priority flows such as video call flows.
- the ONU 20 does not uniformly throttle all flows, but throttles according to the communication quality and priority requested by the terminal device 30 .
- the ONU 20 may throttle the traffic and send a communication interruption request to the terminal device 30 .
- the terminal device 30 Upon receiving the communication interruption request, the terminal device 30, for example, inquires of the user via the application unit 340 whether or not the traffic can be interrupted, and terminates or postpones the flow when permission is obtained from the user.
- the ONU 20 When the ONU 20 receives throughput information indicating that the traffic volume of the private line is likely to exceed the throughput of the WAN side even after adjusting the traffic such as throttling and communication interruption, the ONU 20 updates the communication path settings. For example, the ONU 20 sets a traffic routing rule according to the channel quality request from the terminal device 30 .
- FIG. 12 is a sequence diagram showing an example of communication processing according to the third embodiment of the present disclosure. 7 and 10 are denoted by the same reference numerals, and descriptions thereof are omitted.
- the MDF board 10A analyzes that the private line traffic volume is likely to exceed the throughput on the WAN side (step S301), it notifies the ONU 20 of the throughput information (step S302).
- the ONU 20 that has acquired the throughput information first adjusts the traffic (step S303). Even if the traffic is adjusted, when the throughput information is received from the MDF board 10A (step S304), the ONU 20 sets the communication path (step S305). For example, the ONU 20 sets the communication path so as to switch the communication path for traffic that cannot meet the communication path quality requirements of the terminal device 30 to the communication path R2 via the local 5G network.
- the transmission data (app1) from the terminal device 30 is transmitted to the MDF board 10A via the base station 40 (local 5G).
- the ONU 20 adjusts the traffic and then sets the communication path
- the present invention is not limited to this. For example, if the ONU 20 sets the communication path and relays important traffic through a communication path other than the private line, but the traffic volume is not sufficiently reduced, the ONU 20 adjusts the traffic. good too.
- the ONU 20 sets the communication path according to the result of monitoring the throughput on the WAN side by the MDF board 10A.
- the ONU 20 can dynamically set the communication path according to the actual communication situation, and the network environment can be further improved.
- the ONU 20 performs static communication path setting, and in the second and third embodiments, the ONU 20 performs dynamic communication path setting, but the present invention is not limited to this.
- the ONU 20 may perform both static channel setup and dynamic channel setup.
- the ONU 20 may switch between static communication path setting and dynamic communication path setting depending on the application. For example, the ONU 20 statically sets the communication path so that the traffic of a very important application (an example of the first traffic) is always communicated via the local 5G (communication path R2, an example of the first communication path). and other applications to perform dynamic channel setup. Specifically, when the communication condition satisfies the communication path quality required by the terminal device 30 in traffic with a high priority (an example of the second traffic), the ONU 20 selects the private line (communication path R1, second communication an example of a road). For example, when the communication condition does not satisfy the communication channel quality required by the terminal device 30, the ONU 20 selects the local 5G (communication channel R2, an example of the first communication channel) for communication of high priority traffic.
- the communication condition satisfies the communication path quality required by the terminal device 30 in traffic with a high priority (an example of the second traffic
- the ONU 20 selects the private line (communication path R1, second communication an example of a road).
- the ONU 20 may switch between dynamic communication path setting and static communication path setting, for example, based on the communication path quality request information.
- the ONU 20 may switch between dynamic communication channel setting and static communication channel setting based on an instruction from the user.
- the MDF boards 10 and 10A communicate with the ONU 20 via the private line (communication path R1) and the local 5G (communication path R2).
- the multiple communication channels are not limited to the communication channels described above.
- FIG. 13 is a diagram for explaining an example of a communication path according to the second modified example of the present disclosure.
- the base station 40 can connect to an external network (eg, WLAN) via, for example, a local 5G core network (not shown).
- the ONU 20 may use the communication path R3, which connects to the external network via the base station 40, as one of the plurality of communication paths instead of the communication path R2.
- the ONU 20 sets a routing rule for selecting the communication path R1 or the communication path R3 based on the communication path quality request information acquired from the terminal device 30.
- the ONU 20 is connected to the upstream network via a plurality of communication paths in the first to third embodiments and the first and second modifications described above, the present invention is not limited to this.
- the MDF board 10A may be connected to an upstream network (external network) via a plurality of communication paths.
- FIG. 14 is a diagram for explaining an example of a communication path according to the third modified example of the present disclosure.
- the base station 40 can be connected to an external network (eg, WLAN) via, for example, a local 5G core network (not shown).
- the MDF board 10C uses either the communication path R4 connected to the external network via the wired network or the communication path R5 connected to the external network via the base station 40 (local 5G) to to relay.
- FIG. 15 is a block diagram showing a configuration example of an MDF board 10C according to the third modified example of the present disclosure.
- the MDF board 10C shown in FIG. 15 differs from the MDF board 10 of FIG.
- the 2_1 communication I/F 112_1 is, for example, an interface that connects to an external network, and has the same function as the second communication I/F 112 in FIG.
- the 2_2 communication I/F 112_2 is an interface that connects to local 5G via the base station 40, for example.
- the communication path setting unit 132 selects the communication path to be connected to the external network from the communication paths R4 and R5, and sets the routing rule. For example, the communication path setting unit 132 selects the communication path R5 for flows that communicate via the base station 40 (communication path R2), and selects , the communication path R4 may be selected.
- the communication path setting unit 132 may, for example, acquire communication path quality request information from the terminal device 30 via the ONU 20 and set the routing rule based on the information.
- the communication path setting section 132 can set the communication path in the same manner as the communication path setting section 232 of the ONU 20 .
- the communication path setting unit 132 may update the communication path setting according to, for example, the communication status analyzed by the ONU 20A.
- the communication channel setting unit 132 may update the communication channel setting according to the monitoring status of throughput on the WAN side.
- the control unit 130 includes an analysis unit 133 (not shown) shown in FIG.
- the MDF board 10C sets the communication path of the upstream network, but it is not limited to this.
- the terminal device 30 may select a communication path to connect to an external network from among a plurality of communication paths.
- FIG. 16 is a diagram for explaining another example of the communication path according to the third modified example of the present disclosure.
- the base station 40 can be connected to an external network (eg, WLAN) via, for example, a local 5G core network (not shown).
- the terminal device 30D communicates using either the communication path R1 connected to the external network via the ONU 20 or the communication path R6 connected to the external network via the base station 40 (local 5G). conduct.
- FIG. 17 is a block diagram showing a configuration example of a terminal device 30D according to the third modified example of the present disclosure.
- a communication unit 310D of the terminal device 30D illustrated in FIG. 17 has a 1_1 communication I/F 311_1 and a 1_2 communication I/F 311_2.
- the storage unit 320D also has a communication path DB 321 .
- the control unit 330 ⁇ /b>D includes a communication channel determination unit 332 and a communication channel setting unit 333 .
- the 1_1 communication I/F 311_1 is an interface that communicates with the ONU 20, for example.
- the 1_2 communication I/F 311_2 is an interface that connects to local 5G via the base station 40, for example.
- the communication path DB 321 is a database that stores communication paths to external networks.
- the communication path DB 321 is used when the control unit 330D determines which of the plurality of communication paths R1 and R6 to use to connect to the external network.
- the communication path DB 321 is a routing table.
- the communication path determination unit 332 determines the data communication path based on the communication path information (routing rules) stored in the communication path DB 321 .
- the communication channel setting unit 333 sets the communication channel based on the communication channel quality required by the application executed by the application unit 340, for example.
- the communication path setting unit 333 selects the communication path R6 via local 5G, which allows stable communication, for high-priority communication such as a video call application that requires low delay and large-capacity communication, and other For communication with a low priority, the communication path is set so as to select the communication path R1 including the private line.
- the communication path setting unit 333 may dynamically set the communication path according to the communication status obtained from the ONU 20, for example. For example, when the upstream network is not congested, the communication path setting unit 333 sets the communication path so as to select the communication path R1 including the private line. On the other hand, when the upstream network is congested, the communication path setting unit 333 sets the communication path so that either one of the communication paths R1 and R6 is selected according to the type of traffic.
- the communication paths R1 to R6 described in the first to third embodiments and the first and second modifications are examples, and the communication system may select other communication paths.
- the ONU 20 may connect to the MDF board 10 via a public cellular communication network instead of local 5G.
- the number of communication channels used in the communication system is not limited to two.
- the communication system may set routing rules using three or more communication channels.
- the three or more communication paths may include the above-described communication paths R1 to R6, or may include communication paths other than the communication paths R1 to R6.
- the MDF board 10A predicts the current communication situation, but the present invention is not limited to this.
- the MDF board 10A may predict the communication status for a predetermined period. Such a case will be described as a fourth embodiment.
- FIG. 18 is a diagram for explaining the communication status according to the fourth embodiment of the present disclosure. It is generally known that the network utilization rate has a daily cycle and a weekly cycle. As shown in FIG. 18, for example, the utilization rate is highest in a day from 21:00 to 23:00 and lowest from 3:00 to 6:00.
- the MDF board 10A predicts a time period during which the network will be heavily used (hereinafter also referred to as a peak time period), and performs communications that require a large amount of data transfer, such as games and OS updates, during the peak time period.
- the ONU 20 is instructed to avoid it.
- the MDF board 10A can further improve the network environment of the private line.
- the MDF board 10A measures the total amount of traffic flowing in from each house (each ONU 20) and learns a predictor (for example, a regression model) using the total amount of traffic as a correct label.
- Input parameters of the predictor include, for example, the following parameters. ⁇ Date and time ⁇ Date (day of the week, weekdays, weekends, holidays, etc.) ⁇ Weather ⁇ Presence or absence of events (game and OS updates, live streaming, ticket reservations, etc.) ⁇ Usage status of neighboring cells
- the MDF board 10A detects events in which a large amount of data is transferred, such as games and OS updates.
- the MDF board 10A may, for example, detect events based on monitored traffic, or may detect events from the usage of neighboring cells. Alternatively, the MDF board 10A may acquire information about the event (for example, date and time of OS update, etc.) from the terminal device 30 .
- the MDF board 10A uses a predictor to predict the traffic volume during the time period when an event (eg, game, OS update, etc.) occurs.
- an event eg, game, OS update, etc.
- the MDF board 10A instructs the ONU 20 to perform the communication generated by the event during off-peak hours when the network utilization rate is low. Notice.
- the ONU 20 that receives this notification instructs the terminal device 30 to perform event-generated communication (for example, a large amount of data transfer) during off-peak hours, thereby changing the communication time.
- the terminal device 30 obtains permission from the user, for example, and performs communication generated by the event during off-peak hours.
- the traffic volume prediction described above is performed, for example, by a predictor installed in the analysis unit 133 of the MDF board 10A shown in FIG.
- the configuration of the analysis unit 133 may be the same as the configuration of the analysis unit 233 shown in FIG. 9, for example.
- the MDF board 10A does not perform communication due to the event, but adjusts other communication (flow rate restriction, off-peak time period, etc.). change) may be requested to the ONU 20 .
- the MDF board 10A may set a communication path according to the event, such as notifying the ONU 20 to perform event-related communication via the local 5G.
- FIG. 19 is a sequence diagram showing the flow of communication processing according to the fourth embodiment of the present disclosure.
- step S401 when the MDF board 10A detects an event in which the traffic volume exceeds the throughput upper limit value on the WAN side (step S401), it estimates the off-peak hours (step S402).
- the MDF board 10A notifies the ONU 20 of information regarding the off-peak hours as instruction information (step S403).
- the ONU 20 notifies the terminal device 30 of the received instruction information (step S404).
- the terminal device 30 implements an event during off-peak hours based on the instruction information.
- the MDF board 10A instructs to execute an event in which a large amount of data is transferred during off-peak hours, thereby smoothing the traffic and further improving the network environment. be able to.
- the MDF board 10A may predict the traffic volume after n hours instead of the off-peak hours. In this case, for example, when the MDF board 10A determines that the throughput upper limit on the WAN side will not be exceeded even if the event is performed in n hours based on the predicted traffic volume, the ONU 20A instructs the ONU 20 to perform the event in n hours. to notify.
- the MDF board 10A predicts the traffic volume, but in addition to this, the MDF board 10A may detect an abnormal value of the traffic volume.
- the MDF board 10A compares the predicted value and the actual value of throughput, and detects that the throughput is an abnormal value when the actual value is greater than the predicted value by a predetermined threshold or more. For example, when the throughput predicted by the MDF board 10A is 100 Mbps and the current throughput is 150 Mbps, the MDF board 10A detects that the throughput is an abnormal value.
- the MDF board 10A verifies the cause of the traffic increase.
- the MDF board 10A monitors the traffic volume for each I/F (each house (ONU 20)) and detects an I/F that is larger than normal.
- the MDF board 10A determines whether or not the amount of traffic on the WAN side has exceeded a specified amount due to the increase in traffic of the door (ONU 20).
- the MDF board 10A When the traffic volume on the WAN side exceeds the specified amount due to the traffic increase of the relevant door (ONU 20), the MDF board 10A requests the relevant door (ONU 20) to reduce the traffic. At this time, the MDF board 10A may include in the reduction request information about the port number of the flow carrying out a large amount of data communication. Alternatively, shaping may be performed on the traffic of the relevant door (ONU 20).
- the ONU 20 Upon receiving the reduction request, the ONU 20 searches for flows that use more data than usual. The ONU 20 performs shaping on the flow obtained by searching. Alternatively, the ONU 20 notifies the terminal device 30 of a traffic reduction or flow interruption request.
- the ONU 20 may use the flow to perform shaping or request to the terminal device 30 .
- the terminal device 30 that has received the request for traffic reduction or flow suspension requests the application that is generating the flow to suspend.
- the application asks the user for permission to interrupt, and interrupts the flow if permission to interrupt is obtained from the user.
- the ONU 20 transfers important traffic (for example, video call application traffic) to a communication channel (for example, , switch to channel R2) using local 5G. This can be realized by the ONU 20 rewriting the communication path DB 221 .
- important traffic for example, video call application traffic
- a communication channel for example, switch to channel R2
- the MDF board 10A acquires the input parameters and learns the predictor.
- the input parameters may include personal information about the residents of each household, such as which application to use at what timing. Acquisition of such personal information by the MDF board 10A may not be preferable from the viewpoint of privacy protection of each household.
- the MDF board 10A learns the predictor using Federated Learning technology.
- Federated learning technology is a technology that learns by learning on each terminal and centrally aggregating the learning results on each terminal.
- the MDF board 10A collects the results of learning performed by each ONU 20, so that the MDF board 10A learns the predictor.
- the ONU 20 in each house learns a regression model for predicting traffic using the traffic volume actually used as a learning label and given parameters as inputs.
- the predetermined parameters include the following parameters. ⁇ Date and time ⁇ Date ⁇ Weather ⁇ Presence or absence of event ⁇ Port used for traffic ⁇ Type of application
- the MDF board 10A acquires the result (for example, regression model) learned by the ONU 20.
- the MDF board 10A aggregates the acquired learning results and learns a regression model for predicting the overall traffic.
- the learning results are aggregated on the MDF board 10A, and the personal information of each household (for example, the amount of data used, the type of application, etc.) is not aggregated on the MDF board 10A.
- the MDF board 10A can perform predictor learning without using personal information.
- the MDF board 10A uses the learned predictor to perform the above-described off-peak prediction and abnormal value detection.
- the ONU 20 learns the traffic volume. Therefore, the traffic volume can be predicted using the model learned by the ONU 20 . That is, the ONU 20 can use a learning model to predict whether the usage of each household will exceed the capacity of the private line (communication path R1).
- the ONU 20 When the ONU 20 predicts that the usage amount of each house will exceed the allowable amount of the private line (communication path R1), it updates the communication path setting and transfers important traffic to another communication path (for example, a communication path using local 5G). R2).
- each ONU 20 learns and the learning results are aggregated in the MDF board 10A, whereby the ONUs 20 and the MDF board 10A can adjust the amount of traffic flowing through the private line, further improving the network environment. be able to.
- the MDF board 10A detects the event.
- the MDF board 10A that has detected the event may create a cache server and hold a specific file that is frequently accessed due to the detected event.
- the MDF board 10A holds a list of routing destination IPs and FQDNs (Fully Qualified Domain Names).
- the MDF board 10A retains the downloaded data in the cache server when, for example, data download requests to the destination IP or FQDN have exceeded a predetermined number of times. Thereafter, the MDF board 10A transmits the cache content held in the cache server to the source of the request when a download request for the data is received.
- In-house network For example, the proposed technology of the present disclosure can be applied to a LAN (Local Area Network) such as an in-house network.
- LAN Local Area Network
- in an in-house network many employees pass through an access line through an aggregation router and through a backbone network to the Internet.
- telework employees use a VPN (Virtual Private Network) to access the company network.
- VPN Virtual Private Network
- the amount of traffic on the internal network may temporarily exceed the allowable amount, such as when a specific employee sends a large amount of data and causes the internal network to become overwhelmed.
- the allowable amount such as when a specific employee sends a large amount of data and causes the internal network to become overwhelmed.
- VoIP communication may become difficult to communicate.
- the upper router (corresponding to the MDF boards 10, 10A and 10C described above) notifies the lower router (corresponding to the ONU 20 and 20A described above) of the communication path change request.
- the lower router By updating the communication channel setting by the lower router in response to the notification, it is possible to prevent traffic from flowing into the congested path.
- the in-house network system can reduce the usage rate of the in-house network.
- the VPN server monitors its own utilization rate, and if it exceeds the set utilization rate, it notifies the VPN client (employee's PC) under its control of a communication path change request.
- the notified VPN client does not send all traffic through the VPN interface, but uses a communication path that does not use VPN for traffic that can be detoured, such as Internet communication.
- the in-house network system can reduce the amount of VPN traffic.
- ISP Internet Service Provider
- Internet traffic can be bursty when event delivery and updates occur over the Internet.
- access to updates for smartphones is concentrated in a short period of time.
- the ISP's core network (corresponding to the MDF boards 10, 10A, 10C described above) monitors traffic, and when traffic concentration is confirmed in a specific communication path, request the use of another communication path.
- ONUs 20 and 20A of each subscriber who have received the instructions use specific traffic (eg VoIP traffic) on sub-lines (eg cellular lines). Thereby, the terminal device 30 can realize more stable communication.
- specific traffic eg VoIP traffic
- sub-lines eg cellular lines
- Different line businesses by the same operator> The same operator may operate both a fixed line business and a mobile carrier business. In this case, the operator may use the same core network and different access networks for its fixed line business and mobile carrier business.
- the core network notifies the client (for example, the terminal device 30) of a communication channel setting request to switch the access network according to the usage status of one of the access networks. You may make it
- the core network shifts part of the traffic to the wireless network (eg, cellular line) according to priority. Since the same operator manages both the fixed line business and the mobile carrier business, both lines can share the communication status. Therefore, when one line is congested, the core network can prompt the client to detour to the other line, thereby further improving the network environment.
- the wired network eg, fixed line
- the wireless network eg, cellular line
- the core network when a large-scale event using the network occurs, notifies the client (for example, the terminal device 30) to move the communication by the low-priority application to off-peak hours.
- the core network can promote smoothing of network usage and further improve the network environment.
- the core network notifies of a communication path setting request and movement to off-peak hours, but is not limited to this.
- the access network of each line may make the notification.
- FIG. 20 is a hardware configuration diagram showing an example of a computer 1000 that implements the functions of the MDF board 10.
- the computer 1000 has a CPU 1100 , a RAM 1200 , a ROM (Read Only Memory) 1300 , a HDD (Hard Disk Drive) 1400 , a communication interface 1500 and an input/output interface 1600 .
- Each part of computer 1000 is connected by bus 1050 .
- the CPU 1100 operates based on programs stored in the ROM 1300 or HDD 1400 and controls each section. For example, the CPU 1100 loads programs stored in the ROM 1300 or HDD 1400 into the RAM 1200 and executes processes corresponding to various programs.
- the ROM 1300 stores a boot program such as BIOS (Basic Input Output System) executed by the CPU 1100 when the computer 1000 is started, and programs dependent on the hardware of the computer 1000.
- BIOS Basic Input Output System
- the HDD 1400 is a computer-readable recording medium that non-temporarily records programs executed by the CPU 1100 and data used by such programs.
- HDD 1400 is a recording medium that records an information processing program according to the present disclosure, which is an example of program data 1450 .
- a communication interface 1500 is an interface for connecting the computer 1000 to an external network 1550 (for example, the Internet).
- CPU 1100 receives data from another device via communication interface 1500, and transmits data generated by CPU 1100 to another device.
- the input/output interface 1600 is an interface for connecting the input/output device 1650 and the computer 1000 .
- the CPU 1100 receives data from input devices such as a keyboard and mouse via the input/output interface 1600 .
- the CPU 1100 also transmits data to an output device such as a display, speaker, or printer via the input/output interface 1600 .
- the input/output interface 1600 may function as a media interface for reading a program or the like recorded on a predetermined recording medium.
- Media include, for example, optical recording media such as DVD (Digital Versatile Disc) and PD (Phase change rewritable disk), magneto-optical recording media such as MO (Magneto-Optical disk), tape media, magnetic recording media, semiconductor memories, etc. is.
- the CPU 1100 of the computer 1000 implements the functions of the control unit 130 and the like by executing the information processing program loaded on the RAM 1200.
- the HDD 1400 also stores an information processing program according to the present disclosure and data in the storage unit 120 .
- CPU 1100 reads and executes program data 1450 from HDD 1400 , as another example, these programs may be obtained from another device via external network 1550 .
- a plurality of communication paths include private lines and communication paths via local 5G.
- the communication channel is not limited to this.
- a communication channel via public 5G may be set.
- public 5G is, for example, a public 5G service that can be used by users who have made a contract with a mobile phone carrier.
- the ONUs 20, 20A, etc. select different communication paths so that the terminal devices 30, 30D switch bearers according to the priority of the flow for communication.
- each entity included in the communication systems 1 to 1D may switch logical communication paths instead of/in addition to physical communication paths.
- the terminal devices 30 and 30D may switch communication paths by switching not only bearers but also network slices and overlay networks.
- the terminal devices 30 and 30D may specify QoS (Quality of Service) in the ToS (Type of Service) field to switch communication paths.
- QoS Quality of Service
- ToS Type of Service
- the ONUs 20, 20A and/or the MDF boards 10, 10A, 10C may not only switch the communication path by switching the communication I/F, but may switch the communication path by switching the following, for example.
- ⁇ Network slice ⁇ Overlay network ⁇ VLAN (Virtual LAN) ⁇ Tunneling protocol (Ipsec (Security Architecture for IP), GRE (Generic Routing Encapsulation))
- the ONUs 20, 20A and/or the MDF boards 10, 10A, 10C may switch the communication path by switching between the local 5G and public 5G. That is, both local 5G and public 5G can be included in multiple channels.
- 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 and integrated in arbitrary units according to various loads and usage conditions. Can be integrated and configured. Note that this distribution/integration configuration may be performed dynamically.
- each embodiment and each modification uses any configuration that constitutes a device or system, such as a processor as a system LSI (Large Scale Integration), a module using a plurality of processors, a plurality of modules, etc. It can also be embodied as a unit, or a set obtained by adding other functions to the unit (that is, a configuration of part of the device).
- a system means a set of a plurality of components (devices, modules (parts), etc.), and it does not matter whether or not all the components are in the same housing. No. Therefore, a plurality of devices housed in separate housings and connected via a network, and a single device housing a plurality of modules in one housing, are both systems. .
- each embodiment and each modification can have a cloud computing configuration in which one function is shared by multiple devices via a network and processed jointly.
- a relay device that connects to an upstream network via a plurality of communication paths and relays communication between the upstream network and the downstream network, Acquiring at least one communication status of the plurality of communication channels; selecting one communication path from among the plurality of communication paths according to the communication status; a control unit that connects to the upstream network using the selected communication path; relay device.
- the relay device according to (1) wherein the control unit selects one communication channel from among the plurality of communication channels based on a communication quality request acquired from a communication device connected via the downstream network.
- the control unit uses the communication path for relaying communication between the communication device and the upstream network when the communication quality request from the communication device cannot be satisfied by using the communication path from which the communication status is acquired.
- the relay device according to (2) which changes the (4)
- the control unit adjusts the traffic using the communication path, even if the communication status is The relay device according to (3), which changes the communication channel when the communication quality cannot be satisfied.
- the control unit uses a first communication path among the plurality of communication paths regardless of the communication state in communication of the first traffic, and in communication of the second traffic and communicating using a second communication path different from the first communication path when the communication quality request can be satisfied from the communication status, and using the first communication path when the communication quality request cannot be satisfied.
- the relay device according to (3) or (4).
- the control unit connecting to the upstream network by connecting to the first relay device via at least one of the plurality of communication paths; selecting one communication path from among the plurality of communication paths based on an instruction from the first relay device; The relay device according to any one of (1) to (5).
- the control unit The relay device according to (6), wherein the communication time is changed based on an instruction from the first relay device.
- the control unit predicting the communication status of at least one of the plurality of communication channels using a predictive model; Selecting one communication channel from the plurality of communication channels based on the prediction result;
- the relay device according to any one of (1) to (7).
- (9) further comprising a plurality of communication interfaces corresponding to each of the plurality of communication paths;
- the relay device according to any one of (1) to (8), wherein the control unit selects one of the plurality of communication interfaces according to the communication status.
- the plurality of communication paths include a wired communication path arranged in the housing complex and a wireless communication path with the interior of the housing complex as a communication area,
- the relay device according to any one of (1) to (10).
- a first relay device connected to an upstream network via a plurality of communication paths and relaying communication between the upstream network and the downstream network; a second relay device that relays at least one of the plurality of communication paths and the upstream network; a communication device connected to the downstream network; with The first relay device is Acquiring at least one communication status of the plurality of communication channels; selecting one communication path from among the plurality of communication paths according to the communication status; a control unit that connects to the upstream network using the selected communication path; communication system.
- a relay device that relays communication of a communication device connected to the downstream network by relaying communication between an upstream network and a downstream network, acquiring at least one of the communication status of the downstream network and the communication status of the upstream network; a control unit that notifies the communication device of a communication path change instruction to change a communication path connected to the upstream network according to the communication status; relay device.
- the control unit notifies the communication device of a time change instruction to change the communication time according to the communication status.
- the control unit predicts the communication status at a predetermined time using a prediction model, and notifies the time change instruction based on the prediction result.
- the relay device learns the prediction model based on past communication conditions.
- the relay device aggregates learning models learned by the communication device to generate the prediction model.
- a communication device that connects to an external network via a relay device, a control unit that changes a communication path connected to the external network based on instruction information notified by the relay device according to the communication status between the relay device and the communication device;
- a communication device comprising: (20) The control unit notifies the relay device of a quality request related to the quality required for communication, The relay device notifies the instruction information when the quality request cannot be satisfied in the communication situation.
- the communication device according to (19).
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Abstract
Description
<1.1.従来技術>
上述したように、例えばテレワークの普及により、ネットワーク環境の更なる改善が求められている。例えば、特許文献1では、優先度の高いトラフィックは、ネットワークキューで優先的に処理を行ったり、優先度の低いトラフィックはシェイピングをしたりすることで、QoS制御を行い、ネットワーク環境の改善を図っている。
提案技術に係る中継装置は、複数の通信路を介して上流ネットワークに接続する。中継装置は、かかる上流ネットワークと下流ネットワークとの間の通信を中継する。
<2.1.通信システムの構成例>
<2.1.1.通信システムの全体構成例>
図1は、本開示の第1実施形態に係る通信システム1の構成例を示す図である。図1に示す例では、通信システム1は、MDF盤10と、ONU20と、端末装置30と、基地局40と、を備える。なお、以下の図面では、特に断りがない限り有線通信を実線で無線通信を点線で図示する。
図3は、本開示の第1実施形態に係るMDF盤10の構成例を示すブロック図である。図3に示すMDF盤10は、通信部110と、記憶部120と、制御部130と、を備える。
図4は、本開示の第1実施形態に係るONU20の構成例を示すブロック図である。図4に示すONU20は、通信部210と、記憶部220と、制御部230と、を備える。
図5は、本開示の第1実施形態に係る端末装置30の構成例を示すブロック図である。図5に示す端末装置30は、通信部310と、記憶部320と、制御部330と、アプリケーション部340と、を備える。
ここで、図6を用いて、JSON形式の通信路品質要求情報の一例について説明する。図6は、本開示の実施形態に係る通信路品質要求情報の一例を説明するための図である。
次に、図7を用いて、本開示の第1実施形態に係る通信処理の一例について説明する。図7は、本開示の第1実施形態に係る通信処理の一例を示すシーケンス図である。
上述した第1実施形態では、ONU20が通信路品質要求情報に基づいて設定した通信路に応じて、データの通信路が決定されるとした。すなわち、第1の実施形態では、ONU20又はMDF盤10は、データの通信路を静的に決定し、アプリケーション等の種別に応じて常に決まったルールでデータのルーティングを行うとしたが、これに限定されない。例えば、端末装置30が要求する通信品質を満たせない恐れがある場合に、ONU20又はMDF盤10が通信路を切り替えるようにしてもよい。かかる場合について第2の実施形態として説明する。
図8は、本開示の第2実施形態に係るONU20Aの構成例を示すブロック図である。図8に示すONU20Aの制御部230Aが、通信路決定部231Aと、通信路設定部232Aと、分析部233とを備える点で図5のONU20と異なる。
・スループット
・パケットキュー長
・TCP(Transmission Control Protocol)のエラー値
・再送回数
・アプリケーションごとのスループット
・特定のホストに対するRTT(Round Trip Time)
・ICMP(Internet Control Message Protocol)のエラー率
・パケットカウンタ
・エラー
・I/F(例えば、第1_1通信I/F111_1、第2通信I/F112(図3参照))のスループット
・パケットキュー長
・トレースルートの結果
・リンクの速度
・最小帯域幅
・信頼性
・負荷
・最小MTU(Maximum Transmission Unit)
図10は、本開示の第2実施形態に係る通信処理の一例を示すシーケンス図である。なお、図7と同じ処理については同一符号を付し説明を省略する。
上述した第2実施形態では、ONU20が通信状況を予測するとしたが、これに限定されない。例えば、MDF盤10が通信状況を予測するようにしてもよい。かかる場合について第3の実施形態として説明する。
図11は、本開示の第3実施形態に係るMDF盤10Aの構成例を示すブロック図である。図11に示すMDF盤10Aは、分析部133と、指示部134と、を備える点で図4のMDF盤10と異なる。
図12は、本開示の第3実施形態に係る通信処理の一例を示すシーケンス図である。なお、図7及び図10と同じ処理については同一符号を付し説明を省略する。
上述した第1実施形態では、ONU20が静的な通信路設定を行い、第2、第3実施形態では、ONU20が動的な通信路設定を行うとしたが、これに限定されない。例えば、ONU20が静的な通信路設定及び動的な通信路設定の両方を行うようにしてもよい。
上述した第1~第3実施形態及び第1変形例では、MDF盤10、10Aが、構内回線(通信路R1)及びローカル5G(通信路R2)を介してONU20と通信を行うとしたが、複数の通信路は、上述した通信路に限定されない。
上述した第1~第3実施形態及び第1、第2変形例では、ONU20が複数の通信路を介して上流ネットワークに接続するとしたが、これに限定されない。例えば、MDF盤10Aが複数の通信路を介して上流ネットワーク(外部ネットワーク)に接続するようにしてもよい。
上述した第3実施形態では、MDF盤10Aが現在の通信状況を予測するとしたが、これに限定されない。例えば、MDF盤10Aが所定期間の通信状況を予測するようにしてもよい。かかる場合について第4の実施形態として説明する。
・日時
・日付(曜日、平日、週末、休日等)
・天候
・イベントの有無(ゲームやOSのアップデート、ライブ配信やチケット予約等)
・近隣セルの利用状況
上述した第4実施形態では、MDF盤10Aがトラフィック量を予測するとしたが、これに加え、MDF盤10Aがトラフィック量の異常値を検出するようにしてもよい。
上述した第4実施形態では、MDF盤10Aが、入力パラメータを取得して予測器を学習するとした。ここで、入力パラメータに、例えば、どのタイミングでどのアプリケーションを使用するかなど、各戸の住民に関する個人的な情報が含まれる恐れがある。このような個人的な情報をMDF盤10Aが取得することは、各戸のプライバシー保護の観点で好ましくない場合がある。
・日時
・日付
・天候
・イベントの有無
・使用トラフィックのポート
・アプリケーションの種別
上述した第4実施形態では、MDF盤10Aがイベントを検出するとした。イベントを検出したMDF盤10Aは、キャッシュサーバを作成し、検出したイベントによってアクセスが多く発生する特定のファイルを保持するようにしてもよい。例えば、MDF盤10Aは、ルーティングする宛先IPやFQDN(Fully Qualified Domain Name)のリストを保持しておく。MDF盤10Aは、当該宛先IPやFQDNに対して、例えばデータのダウンロードリクエストが所定回数を超えて行われた場合、ダウンロードされたデータをキャッシュサーバに保持する。以降、MDF盤10Aは、当該データのダウンロードリクエストが来た場合、キャッシュサーバに保持されたキャッシュコンテンツをリクエスト元に送信する。
上述した第1~4実施形態及び第1~第4変形例では、本開示の提案技術を集合住居に構築される構内回線を含むシステムに適用する場合について説明したが、本開示の提案技術の適用先は集合住居に限定されない。
例えば、本開示の提案技術は、社内ネットワークのようなLAN(Local Area Network)に適用され得る。例えば、社内ネットワークでは、多くの従業員がアクセス回線から集約ルータを抜け、バックボーンネットワークを通じてインターネットに抜けてゆく。また、テレワークをしている従業員は、VPN(Virtual Private Network)を使用して社内ネットワークにアクセスする。
インターネットを使ってのイベント配信やアップデートが起こると、インターネットトラフィックがバースト的に使用されることがある。とくにスマートフォンのアップデートは短期間にアクセスが集中する。
同一事業者が、固定回線事業及び携帯キャリア事業の両方を経営している場合がある。この場合、当該事業者は、固定回線事業及び携帯キャリア事業で、同一のコアネットワークと、異なるアクセスネットワークと、を使用し得る。
上述してきた各実施形態に係るMDF盤10、10A、10C、ONU20、20A、端末装置30、30D等の情報機器は、例えば図20に示すような構成のコンピュータ1000によって実現される。以下、実施形態に係るMDF盤10を例に挙げて説明する。図20は、MDF盤10の機能を実現するコンピュータ1000の一例を示すハードウェア構成図である。コンピュータ1000は、CPU1100、RAM1200、ROM(Read Only Memory)1300、HDD(Hard Disk Drive)1400、通信インターフェイス1500、及び入出力インターフェイス1600を有する。コンピュータ1000の各部は、バス1050によって接続される。
上述の各実施形態及び各変形例は一例を示したものであり、種々の変更及び応用が可能である。
・ネットワークスライス
・オーバーレイネットワーク
・VLAN(Virtual LAN)
・トンネリングプロトコル(Ipsec(Security Architecture for IP)、GRE(Generic Routing Encapsulation))
以上、本開示の各実施形態及び各変形例について説明したが、本開示の技術的範囲は、上述の各実施形態及び各変形例そのままに限定されるものではなく、本開示の要旨を逸脱しない範囲において種々の変更が可能である。また、異なる実施形態及び変形例にわたる構成要素を適宜組み合わせてもよい。
(1)
複数の通信路を介して上流ネットワークに接続し、前記上流ネットワークと下流ネットワークとの通信を中継する中継装置であって、
前記複数の通信路の少なくとも1つの通信状況を取得し、
前記通信状況に応じて、前記複数の通信路の中から1つの通信路を選択し、
選択した前記通信路を使用して前記上流ネットワークに接続する、制御部、
を備える中継装置。
(2)
前記制御部は、前記下流ネットワークを介して接続する通信装置から取得する通信品質要求に基づき、前記複数の通信路の中から1つの通信路を選択する、(1)に記載の中継装置。
(3)
前記制御部は、前記通信状況を取得した前記通信路を使用すると、前記通信装置からの通信品質要求を満たせない場合に、前記通信装置と前記上流ネットワークとの通信の中継に使用する前記通信路を変更する、(2)に記載の中継装置。
(4)
前記制御部は、前記通信状況を取得した前記通信路を使用すると、前記通信装置からの通信品質要求を満たせない場合に、前記通信路を使用するトラフィックの調整を行っても、前記通信状況が前記通信品質を満たせない場合に、前記通信路を変更する、(3)に記載の中継装置。
(5)
前記制御部は、前記通信品質要求に応じて、第1のトラフィックの通信において、前記通信状況によらず前記複数の通信路のうちの第1通信路を使用し、第2のトラフィックの通信において、前記通信状況から前記通信品質要求を満たせる場合には前記第1通信路とは異なる第2通信路を使用し、前記通信品質要求を満たせない場合には前記第1通信路を使用して通信を行う、
(3)又は(4)に記載の中継装置。
(6)
前記制御部は、
前記複数の通信路の少なくとも1つを介して第1中継装置に接続することで、前記上流ネットワークに接続し、
前記第1中継装置からの指示に基づき、前記複数の通信路の中から1つの通信路を選択する、
(1)~(5)のいずれか1つに記載の中継装置。
(7)
前記制御部は、
前記第1中継装置からの指示に基づき、前記通信の時間を変更する、(6)に記載の中継装置。
(8)
前記制御部は、
予測モデルを用いて前記複数の通信路の少なくとも1つの通信状況を予測し、
予測結果に基づき、前記複数の通信路の中から1つの通信路を選択する、
(1)~(7)のいずれか1つに記載の中継装置。
(9)
前記複数の通信路のそれぞれに対応する複数の通信インターフェイスをさらに備え、
前記制御部は、前記通信状況に応じて、前記複数の通信インターフェイスの中から1つを選択する、(1)~(8)のいずれか1つに記載の中継装置。
(10)
前記複数の通信路は、複数の論理ネットワークを含む、(1)~(9)のいずれか1つに記載の中継装置。
(11)
前記複数の通信路は、集合住居内に配設された有線の通信路、及び、前記集合住居内を通信エリアとする無線の通信路を含む、
(1)~(10)のいずれか1つに記載の中継装置。
(12)
複数の通信路を介して上流ネットワークに接続し、前記上流ネットワークと下流ネットワークとの通信を中継する中継方法であって、
前記複数の通信路の少なくとも1つの通信状況を取得し、
前記通信状況に応じて、前記複数の通信路の中から1つの通信路を選択し、
選択した前記通信路を使用して前記上流ネットワークに接続する、
中継方法。
(13)
複数の通信路を介して上流ネットワークに接続し、前記上流ネットワークと下流ネットワークとの通信を中継する第1中継装置と、
前記複数の通信路の少なくとも1つと前記上流ネットワークとを中継する第2中継装置と、
前記下流ネットワークに接続する通信装置と、
を備え、
前記第1中継装置は、
前記複数の通信路の少なくとも1つの通信状況を取得し、
前記通信状況に応じて、前記複数の通信路の中から1つの通信路を選択し、
選択した前記通信路を使用して前記上流ネットワークに接続する、制御部、
を備える通信システム。
(14)
上流ネットワークと下流ネットワークとの通信を中継することで、前記下流ネットワークに接続する通信装置の通信を中継する中継装置であって、
前記下流ネットワークの通信状況、及び、前記上流ネットワークの通信状況の少なくとも一方を取得し、
前記通信状況に応じて、前記通信装置に対して、前記上流ネットワークに接続する通信路を変更するよう通信路変更指示を通知する、制御部、
を備える中継装置。
(15)
前記制御部は、前記通信状況に応じて、前記通信装置に対して、前記通信を行う時間を変更するよう時間変更指示を通知する、(14)に記載の中継装置。
(16)
前記制御部は、予測モデルを用いて所定時刻の前記通信状況を予測し、予測結果に基づき、前記時間変更指示を通知する、(15)に記載の中継装置。
(17)
前記制御部は、過去の通信状況に基づいて前記予測モデルの学習を行う、(16)に記載の中継装置。
(18)
前記制御部は、前記通信装置が学習した学習モデルを集約して前記予測モデルを生成する、(16)に記載の中継装置。
(19)
中継装置を介して、外部ネットワークに接続する通信装置であって、
前記中継装置と前記通信装置との間の通信状況に応じて前記中継装置が通知する指示情報に基づき、前記外部ネットワークに接続する通信路を変更する、制御部、
を備える通信装置。
(20)
前記制御部は、通信に要求する品質に関する品質要求を前記中継装置に通知し、
前記中継装置は、前記通信状況では前記品質要求を満たせない場合に、前記指示情報を通知する、
(19)に記載の通信装置。
10 MDF盤
20 ONU
30 端末装置
40 基地局
110、210、310 通信部
120、220、320 記憶部
121、221、321 通信路DB
130、230、330 制御部
131、231、332 通信路決定部
132、232、333 通信路設定部
133、233 分析部
134 指示部
331 通知部
340 アプリケーション部
Claims (13)
- 複数の通信路を介して上流ネットワークに接続し、前記上流ネットワークと下流ネットワークとの通信を中継する中継装置であって、
前記複数の通信路の少なくとも1つの通信状況を取得し、
前記通信状況に応じて、前記複数の通信路の中から1つの通信路を選択し、
選択した前記通信路を使用して前記上流ネットワークに接続する、制御部、
を備える中継装置。 - 前記制御部は、前記下流ネットワークを介して接続する通信装置から取得する通信品質要求に基づき、前記複数の通信路の中から1つの通信路を選択する、請求項1に記載の中継装置。
- 前記制御部は、前記通信状況を取得した前記通信路を使用すると、前記通信装置からの通信品質要求を満たせない場合に、前記通信装置と前記上流ネットワークとの通信の中継に使用する前記通信路を変更する、請求項2に記載の中継装置。
- 前記制御部は、前記通信状況を取得した前記通信路を使用すると、前記通信装置からの通信品質要求を満たせない場合に、前記通信路を使用するトラフィックの調整を行っても、前記通信状況が前記通信品質を満たせない場合に、前記通信路を変更する、請求項3に記載の中継装置。
- 前記制御部は、前記通信品質要求に応じて、第1のトラフィックの通信において、前記通信状況によらず前記複数の通信路のうちの第1通信路を使用し、第2のトラフィックの通信において、前記通信状況から前記通信品質要求を満たせる場合には前記第1通信路とは異なる第2通信路を使用し、前記通信品質要求を満たせない場合には前記第1通信路を使用して通信を行う、
請求項3に記載の中継装置。 - 前記制御部は、
前記複数の通信路の少なくとも1つを介して第1中継装置に接続することで、前記上流ネットワークに接続し、
前記第1中継装置からの通知に基づき、前記複数の通信路の中から1つの通信路を選択する、
請求項1に記載の中継装置。 - 前記制御部は、
前記第1中継装置からの指示に基づき、前記通信の時間を変更する、請求項6に記載の中継装置。 - 前記制御部は、
予測モデルを用いて前記複数の通信路の少なくとも1つの通信状況を予測し、
予測結果に基づき、前記複数の通信路の中から1つの通信路を選択する、
請求項1に記載の中継装置。 - 前記複数の通信路のそれぞれに対応する複数の通信インターフェイスをさらに備え、
前記制御部は、前記通信状況に応じて、前記複数の通信インターフェイスの中から1つを選択する、請求項1に記載の中継装置。 - 前記複数の通信路は、複数の論理的な通信路を含む、請求項1に記載の中継装置。
- 前記複数の通信路は、集合住居内に配設された有線の通信路、及び、前記集合住居内を通信エリアとする無線の通信路を含む、
請求項1に記載の中継装置。 - 複数の通信路を介して上流ネットワークに接続し、前記上流ネットワークと下流ネットワークとの通信を中継する中継方法であって、
前記複数の通信路の少なくとも1つの通信状況を取得し、
前記通信状況に応じて、前記複数の通信路の中から1つの通信路を選択し、
選択した前記通信路を使用して前記上流ネットワークに接続する、
中継方法。 - 複数の通信路を介して上流ネットワークに接続し、前記上流ネットワークと下流ネットワークとの通信を中継する第1中継装置と、
前記複数の通信路の少なくとも1つと前記上流ネットワークとを中継する第2中継装置と、
前記下流ネットワークに接続する通信装置と、
を備え、
前記第1中継装置は、
前記複数の通信路の少なくとも1つの通信状況を取得し、
前記通信状況に応じて、前記複数の通信路の中から1つの通信路を選択し、
選択した前記通信路を使用して前記上流ネットワークに接続する、制御部、
を備える通信システム。
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