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WO2024018577A1 - Système de mesure de la qualité de communication d'un terminal - Google Patents

Système de mesure de la qualité de communication d'un terminal Download PDF

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Publication number
WO2024018577A1
WO2024018577A1 PCT/JP2022/028298 JP2022028298W WO2024018577A1 WO 2024018577 A1 WO2024018577 A1 WO 2024018577A1 JP 2022028298 W JP2022028298 W JP 2022028298W WO 2024018577 A1 WO2024018577 A1 WO 2024018577A1
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WO
WIPO (PCT)
Prior art keywords
terminal
quality
network
measurement
communication
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Ceased
Application number
PCT/JP2022/028298
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English (en)
Japanese (ja)
Inventor
央也 小野
裕希 坂上
友宏 谷口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to PCT/JP2022/028298 priority Critical patent/WO2024018577A1/fr
Publication of WO2024018577A1 publication Critical patent/WO2024018577A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to a system for measuring communication quality of a terminal.
  • a user terminal can communicate using multiple lines.
  • a smartphone can select whether to use LTE, wireless LAN, or Bluetooth. It is also possible to use different access means of different carriers that use the same communication standard.
  • Each of these access methods and their upper networks have different communication qualities such as bandwidth and delay, so it is possible to maximize the user's quality of experience (QoE) by appropriately using them. become.
  • the communication quality achieved by each network also depends on the network connection status of surrounding terminals at that moment. As shown in the diagram below, when networks connecting to peripheral devices compete with each other, communication quality is likely to deteriorate due to network congestion. Therefore, in order for the terminal to select the optimal network, it is necessary to obtain information on the current or near future communication quality achieved by each network.
  • the selection of the optimal network by the terminal may be performed while the terminal is using the application in order to improve the quality of experience of the application currently being used.
  • This disclosure considers the situation of selecting an optimal network while using an application.
  • connection network there is no need to actually switch the connection network, so it is expected that it will lead to optimization of connection destinations with less negative impact on the applications being used by each user.
  • prediction accuracy if the prediction accuracy is not sufficient, it will be impossible to optimize the connection destination of the actual terminal.
  • Non-Patent Documents 1 to 3 There are several techniques for predicting the communication quality of each terminal using the connection pattern between the terminal and the network as input (see, for example, Non-Patent Documents 1 to 3).
  • the first method is to use a mathematical model.
  • [Non-Patent Document 1] analyzes the behavior of communication protocols to predict throughput based on SNR (Signal-Noise Ratio), allocated frequency width, number of devices connected to the base station, etc., and determines the optimal connection. It is used for network selection.
  • the second method is to use network simulation.
  • [Non-patent Document 2] simulates application communication from terminals and servers, and predicts communication quality by simulating the behavior of each packet within a virtual network topology, which is used to select the optimal connection network. .
  • the third method is based on machine learning regression.
  • Non-Patent Document 3 a prediction model for communication quality is learned from simulation results and communication results at actual terminals, and the communication quality for unknown connection patterns is predicted and used to select the optimal connection network. are doing.
  • the connected control device When using these methods in prediction, the connected control device performs prediction after collecting information necessary for prediction from terminals and network devices in advance through TCP/IP communication. For example, when making predictions using a mathematical model, it is possible to estimate the upper bound of the realized throughput from Shannon's equation by collecting information on the radio field strength that each terminal receives from each wireless base station.
  • Non-Patent Documents 1, 2, and 3 assume that all terminals in the system can be managed in an ideal radio wave propagation environment, but in reality, objects around the terminals affect radio wave propagation. It is assumed that unmanaged terminals using the same frequency band may be a source of interference, and this assumption does not hold true in many cases, so it cannot be said that it is a method that accurately predicts reality.
  • the present disclosure aims to make it possible to obtain accurate communication quality information of surrounding networks without degrading the perceived quality of an application.
  • the system and method of the present disclosure are a system and method for measuring the communication quality of any terminal connected to a network.
  • a second terminal located near a first terminal connects to a target network specified by the first terminal to measure the communication quality of the target network,
  • the first terminal acquires quality information obtained by measurement of the second terminal.
  • the second terminal when the first terminal transmits a request for quality information including communication quality of the target network, the second terminal is a non-communication terminal that is not connected to the target network. be. In this manner, in the present disclosure, a non-communication terminal measures communication quality in place of the first terminal.
  • the system of the present disclosure may include a quality measurement mediation device.
  • the quality measurement mediation device is a quality measurement mediation device capable of communicating with a plurality of terminals, receiving a request for quality information including communication quality of the target network from a first terminal of the plurality of terminals; Selecting a second terminal that is not connected to the target network from among the terminals that can be communicatively connected to the target network; causing the selected second terminal to measure communication quality of the target network; Quality information obtained by the measurement of the second terminal is provided to the first terminal.
  • the system of the present disclosure may not include a quality measurement intermediary device.
  • the first terminal distributes a request for quality information including the communication quality of the target network to the surrounding area, and one of the terminals that received the request acts as the second terminal for the target network.
  • the communication quality may be measured.
  • the first terminal may distribute the request to surroundings using a beacon signal. Thereby, the reachable range of the quality information request can be limited to the vicinity of the first terminal defined by the reachable range of the beacon signal.
  • the program of the present disclosure is a program for realizing a computer as each functional unit provided in the first terminal, the second terminal, or the quality measurement intermediary device according to the present disclosure, and the method executed by the device according to the present disclosure.
  • This is a program that causes a computer to execute each step of the computer.
  • a communication terminal device can acquire accurate communication quality information of surrounding networks without degrading the perceived quality of an application, and can select an optimal network.
  • FIG. 1 shows an example of a network configuration according to the present disclosure.
  • An example of a system configuration of the present disclosure is shown.
  • This is an example of the configuration of a communicating terminal.
  • This is an example of a configuration of a non-communication terminal.
  • It is an example of a structure of a quality measurement mediation device.
  • An example of the operation of the system of this embodiment is shown.
  • This is an example of the configuration of a communicating terminal.
  • This is an example of a configuration of a non-communication terminal.
  • An example of the operation of the system of this embodiment is shown.
  • FIG. 1 shows an example of the network configuration of this embodiment.
  • the terminal 91#1 is equipped with an interface that can connect to 5G and WiFi, and the terminal 91#1 connects to two types of networks (sometimes abbreviated as NW) 92#1 and 92#2.
  • NW networks
  • An example is shown in which the environment is connectable to the Internet 93 via the Internet.
  • Terminal 91#1 functions as a first terminal of the present disclosure.
  • the terminal 91#1 can use different networks.
  • the terminal 91#1 uses a communication interface (sometimes abbreviated as IF) that is currently used by the application and a communication IF for the network connection for which communication quality is to be measured. This makes it possible to measure communication quality with less impact on applications currently in use.
  • IF communication interface
  • both networks 92#1 and 92#2 are 5G
  • the communication interface currently used by the application and the communication interface for the network connection for which you want to measure communication quality are the same, so the application user The perceived quality of the product may deteriorate.
  • the present disclosure makes it possible to obtain accurate communication quality information of a peripheral network without degrading the quality of experience of an application even in such a peripheral network.
  • the terminal 91#1 will be referred to as a "communicating terminal" and the present disclosure will be described in detail.
  • FIG. 2 shows an example of the system configuration of the present disclosure.
  • the system of the present disclosure measures the communication quality of a network surrounding the communicating terminal 91#1 using the terminal 91#3 located around the communicating terminal 91#1.
  • the terminal 91#3 functions as a second terminal that is not connected to the target network specified by the communicating terminal 91#1, and is hereinafter referred to as a "non-communicating terminal.”
  • a quality measurement mediation device 94 that can communicate with the terminal 91 #1 is provided.
  • the quality measurement intermediary device 94 is used instead.
  • the quality information request included at this time includes the location information of the communicating terminal 91#1, the measurement content you want to perform, the name of the network (SSID in the case of Wi-Fi) for which you want to obtain the communication quality, and its password if necessary. Including.
  • the quality measurement intermediary device 94 transmits a measurement request to the nearby non-communication terminal 91#3 that is connectable to the target network.
  • any terminal on standby where the user is not using the target network in an application can be used.
  • the non-communication terminal 91#3 that receives the message measures the communication quality of the corresponding network.
  • the non-communication terminal 91 #3 transmits the quality measurement result to the quality measurement intermediary device 94.
  • the quality measurement intermediary device 94 transfers the quality measurement result obtained in (4) to the communicating terminal 91#1.
  • the communicating terminal 91#1 determines whether to switch the network connection depending on the quality measurement result.
  • the communication quality measurement system that executes this series of steps does not interfere with the application communication of the communicating terminal 91#1 during quality measurement, and the communication additionally performed by the communicating terminal 91#1 is performed by the quality measurement intermediary device. 94, the impact on communication resources and terminal processing load is small. In addition, since the non-communication terminal 91#3 that performs communication quality measurement is not using the application, the usage satisfaction level of the user of the non-communication terminal 91#3 will not decrease even if the communication interface is occupied at that time. Hateful.
  • the communicating terminal 91#1 can investigate the communication quality of surrounding networks and select the best network for the user without affecting the application being used. I can do it.
  • FIGS. 3 to 5 show functional block diagrams of the communicating terminal 91#1, non-communicating terminal 91#3, and quality measurement intermediary device 94, which are the basic configurations.
  • the communicating terminal 91#1 includes a communication interface 11, an application 12, a network investigation algorithm 13, a network selection algorithm 14, and a location information acquisition unit 15, as shown in FIG.
  • the communication interface 11 is a communication interface used when the application 12 communicates or when the network investigation algorithm 13 communicates with an external device. There may be a plurality of communication interfaces 11, and the communication interfaces 11 used by the application 12 and the network investigation algorithm 13 do not necessarily have to be the same.
  • the application 12 is an application or software used by the user.
  • the network investigation algorithm 13 is a functional unit that measures the communication quality of surrounding networks upon receiving a measurement command from the network selection algorithm 14.
  • the communication quality of the network can be any communication quality such as upstream/downstream throughput, delay, jitter, etc.
  • the network selection algorithm 14 issues an instruction to the network investigation algorithm 13 to measure quality information indicating the communication quality of surrounding networks, and based on the quality information obtained from the network investigation algorithm 13, determines the communication interface to be used and the destination. This is an algorithm for selecting networks.
  • the measurement command may be sent on the array of networks to be measured.
  • the location information acquisition unit 15 is a functional unit that acquires information on the geographic location of the communicating terminal 91#1 using GPS or the like.
  • the network investigation algorithm 13 includes an investigation network selection function section 31, a quality measurement availability determination section 32, a measurement request section 33, and a measurement result reception section 34.
  • - Investigation network selection functional unit 31 This is a functional unit that receives the measurement command from the network selection algorithm 14 and selects the network whose communication quality is to be measured most recently.
  • - Quality measurement capability determining unit 32 A functional unit that monitors the occurrence of communication originating from an application and determines whether or not to perform communication measurement on its own terminal depending on the presence or absence and magnitude of the impact on the application when measuring communication quality. . For example, if communication by the application 12 is occurring, the quality measurement possibility determining unit 32 determines not to measure the communication quality on the corresponding communication interface.
  • - Measurement request unit 33 This is a functional unit that transmits a quality information request from the non-communication terminal 91 #3 to the quality measurement intermediary device 94 when the quality measurement possibility determination unit 32 determines that “measurement is not possible at the own terminal.”
  • the quality information request includes the location information acquired by the location information acquisition unit 15.
  • - Measurement result receiving unit 34 This is a functional unit that receives the quality measurement result by the non-communication terminal 91#3 through the quality measurement intermediary device 94 after sending the quality information request.
  • the non-communication terminal 91#3 includes a communication interface 51, a network investigation algorithm 52, and a location information acquisition unit 53.
  • the communication interface 51 and the location information acquisition section 53 are similar to the communication interface 11 and the location information acquisition section 15.
  • the network investigation algorithm 52 includes a measurement request receiving section 21, a network switching function section 22, a quality measurement function section 23, and a measurement result notification section 24.
  • - Measurement request receiving unit 21 This is a functional unit that receives a quality measurement request for the corresponding network from the quality measurement intermediary device 94.
  • - Network switching function section 22 This is a function section that performs connection processing to the corresponding network in order to measure the communication quality of the corresponding network.
  • - Quality measurement function unit 23 This is a function unit that measures the communication quality of the corresponding network using an existing communication quality estimation method.
  • - Measurement result notification unit 24 This is a functional unit that transmits the measurement results of the quality measurement function unit 23 to the quality measurement intermediary device 94.
  • the quality measurement intermediary device 94 includes a communication interface 41, a measurement request reception section 42, a non-communication terminal search section 43, a measurement request section 44, a measurement request storage section 45, a measurement result reception section 46, and a measurement result reception section 46.
  • a notification section 47 is provided.
  • - Measurement request receiving unit 42 Receives a quality information request from the communicating terminal 91#1.
  • - Non-communicating terminal search unit 43 Selects the non-communicating terminal 91#3 located near the communicating terminal 91#1 that has transmitted the quality information request from among the non-communicating terminals under management.
  • the selection algorithm is to select the closest terminal, select randomly from terminals whose distance between terminals is less than a threshold, or select terminals whose model numbers have a high degree of similarity among terminals whose distance between terminals is less than a threshold. Any method may be used, but any method may be used.
  • - Measurement request unit 44 Sends a quality measurement request requesting communication quality measurement to the non-communication terminal 91#3 that performs communication quality measurement of the corresponding network.
  • - Measurement request storage unit 45 This is a memory that stores information on quality information requests transmitted from the communicating terminal 91#1 and other communicating terminals in the past.
  • - Measurement result receiving unit 46 A functional unit that receives the quality measurement result transmitted from the non-communicating terminal 91#3 and refers to the measurement request storage unit 45 to identify the communicating terminal 91#1 that is the source of the quality information request. It is.
  • - Measurement result notification unit 47 Notifies the communicating terminal 91#1 of the quality information including the quality measurement results measured by the non-communicating terminal 91#3 to the communicating terminal 91#1 which is the source of the quality information request. It is a functional part.
  • FIG. 6 shows an example of the operation of the system of this embodiment.
  • the terminal 91#3 that is under the control of the system and is not communicating transmits a non-communication flag to the quality measurement intermediary device 94 (S51).
  • This non-communication flag includes location information of terminal 91#3.
  • the terminal 91#3 will be referred to as a non-communication terminal 91#3.
  • the network selection algorithm 14 When the network selection algorithm 14 requires information on the communication quality of surrounding networks (S11), it issues a communication quality measurement command to the network investigation algorithm 13.
  • the measurement command includes a list of networks to be measured whose communication quality is to be measured.
  • the network investigation algorithm 13 selects one of the networks included in the measurement target network list (S12), and determines whether the application 12 is currently using the communication interface 11 (S13).
  • the network investigation algorithm 13 uses the communication interface 11 that is not in use to perform the selection in step S12.
  • the communication quality of the target network is measured (S14).
  • the network investigation algorithm 13 determines that "measurable by own terminal is not possible" and requests quality information. It is transmitted to the quality measurement intermediary device 94.
  • the quality information request includes identification information of the measurement target network selected in step S12 and location information of the communicating terminal 91#1.
  • the quality measurement intermediary device 94 Upon receiving the quality information request, the quality measurement intermediary device 94 determines the non-communication terminal 91#3 from among the communication terminals that can use the measurement target network, and instructs the non-communication terminal 91#3 about the communication quality of the measurement target network. A quality measurement request requesting measurement is sent (S41), and information such as the destination of the quality measurement request is saved (S42).
  • the non-communication terminal 91#3 Upon receiving the quality measurement request, the non-communication terminal 91#3 compares the measurement target network of the quality measurement request with the currently connected network, and determines whether network switching is necessary (S52). If network switching is necessary, the non-communication terminal 91#3 switches to the measurement target network of the quality measurement request (S53). Then, the non-communication terminal 91#3 measures the communication quality of the measurement target network and transmits the quality measurement result to the quality measurement intermediary device 94 (S54). Upon receiving the quality measurement result from the non-communicating terminal 91#3, the quality measurement intermediary device 94 transfers quality information including the quality measurement result to the communicating terminal 91#1 (S43).
  • the communicating terminal 91#1 Upon receiving the quality information from the quality measurement intermediary device 94, the communicating terminal 91#1 determines whether quality information for all networks included in the measurement target network list is complete (S15).
  • the network investigation algorithm 13 notifies the network selection algorithm 14 of the quality information of the networks included in the measurement target network list.
  • the network selection algorithm 14 uses the quality information from the network investigation algorithm 13 to select the communication interface to be used and the network to which it belongs (S16).
  • the network investigation algorithm 13 selects the network for which the quality information is not available (S12), and selects the target network measured by the own device or the non-communication terminal 91#3.
  • the communication quality is acquired (S14, S54).
  • a dedicated device may be prepared as the non-communication terminal 91#3, and the quality measurement intermediary device 94 may fixedly allocate the quality measurement request to this non-communication terminal 91#3.
  • the communication terminal Communication quality may be measured at a location close to 91#1.
  • the quality measurement intermediary device 94 selects the non-communication terminal 91#3, but the present disclosure is not limited thereto.
  • a system configuration that does not include the quality measurement intermediary device 94, which is the basic configuration, can also be considered.
  • functions different from those in the first embodiment will be explained.
  • the communicating terminal 91#1 further includes a communication terminal determining section 35 in the network investigation algorithm 13
  • the non-communicating terminal 91#3 further includes a measurement request response section 25 in the network investigation algorithm 52.
  • the measurement request unit 33 provided in the communicating terminal 91#1 broadcasts a quality information request. Thereby, the quality information request is distributed to the surroundings.
  • the communication terminal determination unit 35 is a functional unit that determines which terminal is to be requested to perform measurement when a response is returned from one or more non-communication terminals, and executes the measurement request to that terminal. .
  • the number of terminals to which the quality measurement request is sent may be one, or two or more.
  • the measurement request response unit 25 of the non-communicating terminal 91#3 receives a quality information request from the communicating terminal 91#1, and if the own terminal is capable of measuring the communication quality of the corresponding network based on specific conditions. , is a functional unit that replies to the communicating terminal 91#1 that it is capable of measurement.
  • the measurable conditions are that the distance to the communicating terminal 91#1 is below the threshold, the communication interface of the target network is not in use, and the Bluetooth beacon signal of the communicating terminal 91#1 is within the receivable range. It is conceivable that the model number of the terminal is similar to that of the communicating terminal 91#1, but any conditions may be applied.
  • the measurement result notifying unit 24 is a functional unit that notifies the requesting communicating terminal 91#1 of the quality measurement result regarding the requested network.
  • FIG. 9 shows an example of the operation of the system of this embodiment.
  • the communicating terminal 91#1 broadcasts a quality information request (S61).
  • the non-communicating terminal 91#3 receives the quality information request and, if the communication quality of the target network can be measured, transmits a message to that effect to the communicating terminal 91#1.
  • the communicating terminal 91#1 transmits a quality measurement request to the non-communicating terminal 91#3, which is the source of the reply indicating that measurement is possible.
  • the non-communication terminal 91#3 executes steps S52 to S54 shown in FIG. 6.
  • quality information is transmitted to the communicating terminal 91#1 in step S54.
  • the present disclosure can be realized even with a system configuration that does not include the quality measurement intermediary device 94.
  • This configuration can be implemented when it is possible to broadcast quality information requests from the communicating terminal 91#1 to peripheral terminals, such as in a wireless LAN using Wi-Fi.
  • the communicating terminal 91#1, the non-communicating terminal 91#3, and the quality measurement intermediary device 94 of the present disclosure can also be realized by a computer and a program, and the program can be recorded on a recording medium or provided through a network. .

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Le but de la présente divulgation est de permettre l'acquisition d'informations de qualité de communication précises sur un réseau environnant sans réduire la qualité d'expérience d'une application.　La présente divulgation concerne un système de mesure de la qualité de communication d'un terminal défini arbitrairement connecté à un réseau. Dans le système, un second terminal situé à proximité d'un premier terminal est connecté à un réseau cible désigné par le premier terminal pour ainsi mesurer la qualité de communication du réseau cible, et le premier terminal acquiert des informations de qualité obtenues à partir de la mesure par le second terminal.
PCT/JP2022/028298 2022-07-21 2022-07-21 Système de mesure de la qualité de communication d'un terminal Ceased WO2024018577A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010062783A (ja) * 2008-09-03 2010-03-18 Hitachi Ltd 無線アクセスネットワークおよび通信品質管理装置ならびに無線基地局
WO2016043023A1 (fr) * 2014-09-19 2016-03-24 シャープ株式会社 Appareil de station de base, appareil de terminal, procédé de traitement, appareil de traitement, programme et support d'enregistrement
WO2018030007A1 (fr) * 2016-08-08 2018-02-15 ソニー株式会社 Dispositif et procédé de communication

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010062783A (ja) * 2008-09-03 2010-03-18 Hitachi Ltd 無線アクセスネットワークおよび通信品質管理装置ならびに無線基地局
WO2016043023A1 (fr) * 2014-09-19 2016-03-24 シャープ株式会社 Appareil de station de base, appareil de terminal, procédé de traitement, appareil de traitement, programme et support d'enregistrement
WO2018030007A1 (fr) * 2016-08-08 2018-02-15 ソニー株式会社 Dispositif et procédé de communication

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