WO2024004053A1 - 品質推定装置、品質推定方法、及びプログラム - Google Patents

品質推定装置、品質推定方法、及びプログラム Download PDF

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Publication number
WO2024004053A1
WO2024004053A1 PCT/JP2022/025842 JP2022025842W WO2024004053A1 WO 2024004053 A1 WO2024004053 A1 WO 2024004053A1 JP 2022025842 W JP2022025842 W JP 2022025842W WO 2024004053 A1 WO2024004053 A1 WO 2024004053A1
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WIPO (PCT)
Prior art keywords
quality
history
cell configuration
terminal
communication
Prior art date
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Ceased
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PCT/JP2022/025842
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English (en)
French (fr)
Japanese (ja)
Inventor
憲一 河村
尚希 澁谷
元晴 佐々木
貴庸 守山
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NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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Priority to PCT/JP2022/025842 priority Critical patent/WO2024004053A1/ja
Priority to JP2024530136A priority patent/JPWO2024004053A1/ja
Publication of WO2024004053A1 publication Critical patent/WO2024004053A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to a quality estimation device, a quality estimation method, and a program.
  • a communication area is formed with a multi-band or multi-cell configuration.
  • One terminal can achieve high-speed communication by bundling and using multiple frequency bands at the same time, such as carrier aggregation (CA), which uses cells in multiple bands at the same time, and dual connectivity (DU). It can be realized. Furthermore, when the terminal recognizes a plurality of available cells, it selects the cell to be used according to instructions from the base station and performs handover.
  • CA carrier aggregation
  • DU dual connectivity
  • the cell to be used is determined by the control of the base station or network based on various factors such as the degree of network congestion and quality report information from terminals. Therefore, even if the terminals are used at the same location, for example, the base stations used are often different from each other, and the base stations may be frequently switched during use. Furthermore, addition or deletion of cells by CA, DU, etc. occurs fluidly.
  • the communication speed when communicating with a base station is estimated based on the received power of a specific signal from the base station (for example, Non-Patent Document 1).
  • a heat map is created in advance by simulation or the use of AI, etc., and the radio field strength is estimated (for example, non-patent document 2 ).
  • the disclosed technology aims to improve the accuracy of estimating the communication quality of a terminal in a wireless communication network.
  • the disclosed technology includes: a cell configuration history data acquisition unit configured to acquire data including information indicating the location of one or more terminals and indicating a history of cell configurations selected by the one or more terminals; , an estimated quality request reception unit configured to receive information indicating a location from a terminal and accept a request for estimating communication quality at the location; and the one or more of the one or more included in the data indicating the history of the cell configuration.
  • data indicating the history of the cell configuration is extracted based on information indicating the location of the terminal, and communication quality is requested to be estimated based on the extracted data indicating the history of the cell configuration at the location of the terminal
  • a quality estimating unit configured to estimate the quality of.
  • the accuracy of estimating the communication quality of a terminal in a wireless communication network can be improved.
  • FIG. 1 is a diagram showing an example of a configuration of a quality estimation system according to an embodiment of the present invention.
  • 1 is a diagram showing an example of a functional configuration of a quality estimating device according to an embodiment of the present invention.
  • FIG. 3 is a diagram for explaining an overview of a quality estimation function according to an embodiment of the present invention. It is a figure showing an example of cell configuration history data concerning an embodiment of the present invention. It is a flowchart which shows an example of the flow of quality estimation processing concerning an embodiment of the present invention.
  • 1 is a diagram showing an example of a hardware configuration of a computer.
  • the configuration of the cell to be used by the terminal is estimated based on cell configuration history data indicating the actual values of cell configurations used by the terminal in the past, and the communication quality (for example, throughput in L3) is estimated.
  • the communication quality for example, throughput in L3
  • FIG. 1 is a diagram showing an example of the configuration of a quality estimation system according to an embodiment of the present invention.
  • the quality estimation system 1 includes a quality estimation device 10 and a terminal 20.
  • the quality estimating device 10 and the terminal 20 are communicably connected to each other using a wired or wireless communication method.
  • the quality estimating device 10 receives cell configuration history data and estimated quality request information from the terminal 20 and transmits the estimated quality information to the terminal 20.
  • the cell configuration history data is data indicating the history of cell configurations selected by the terminal 20.
  • Estimated quality request information is information that requests quality estimation, and includes information indicating the location of the terminal to be estimated, support band indicating the frequency band supported by the terminal, and maximum number of aggregations indicating the maximum number of aggregations supported by the terminal. Contains information such as.
  • the quality estimating device 10 estimates quality based on the above-mentioned received information and generates estimated quality information.
  • the estimated quality information is information indicating the estimation result of the communication quality in terms of the terminal position, support band, maximum number of aggregations, etc. corresponding to the estimated quality request information.
  • the quality estimation system 1 may include multiple terminals 20.
  • the quality estimating device 10 may estimate the communication quality based on the history of the cell configuration of the terminal 20 that is different from the terminal 20 that requested quality estimation.
  • FIG. 2 is a diagram showing an example of a functional configuration of a quality estimation device according to an embodiment of the present invention.
  • the quality estimation device 10 includes a cell configuration history data acquisition unit 11, a storage unit 12, an estimated quality request reception unit 13, a quality estimation unit 14, a cell configuration history management unit 15, a quality calculation unit 16, and an estimated quality An output unit 17 is provided.
  • the cell configuration history data acquisition unit 11 acquires cell configuration history data from the terminal 20 and stores it in the storage unit 12.
  • the storage unit 12 stores cell configuration history data.
  • the estimated quality request receiving unit 13 receives estimated quality request information from the terminal 20 to accept a quality estimation request.
  • the quality estimation unit 14 acquires cell configuration history data from the cell configuration history management unit 15 and extracts cell configuration history data corresponding to the terminal position, terminal support band, and maximum aggregation number included in the estimated quality request information. do. Then, an estimated cell configuration is calculated based on the extracted cell configuration history data. In addition, the quality estimation unit 14 obtains the throughput of each base station included in the estimated cell configuration from the quality calculation unit 16, and based on the obtained throughput of each base station, the quality estimation unit 14 calculates the Calculate the estimated throughput at the location.
  • the cell configuration history management unit 15 acquires the cell configuration history data stored in the storage unit 12 based on instructions from the quality estimation unit 14 and delivers it to the quality estimation unit 14.
  • the quality calculation unit 16 calculates the throughput of each base station included in the estimated cell configuration based on instructions from the quality estimation unit 14. For example, the quality calculation unit 16 may calculate the throughput for each base station using conventional techniques such as radio wave propagation simulation and conversion formulas.
  • the estimated quality output unit 17 transmits information indicating the quality estimated by the quality estimation unit 14 to the terminal 20 as estimated quality information.
  • FIG. 3 is a diagram for explaining an overview of the quality estimation function according to the embodiment of the present invention.
  • An outline of the quality estimation function by the quality estimation device 10 is as follows.
  • the quality estimating device 10 acquires cell configuration history data, extracts cell configuration history data corresponding to the terminal position, terminal support band, and maximum aggregation number, and calculates the estimated cell configuration.
  • the quality estimating device 10 also calculates the throughput for each base station using, for example, conventional technology.
  • the quality estimating device 10 then calculates the estimated throughput at the specified terminal position and outputs it as estimated quality information.
  • FIG. 4 is a diagram showing an example of cell configuration history data according to the embodiment of the present invention.
  • the cell configuration history data includes, as items, location information, the support band of the terminal, the maximum number of aggregations of the terminal, and the ID of the band and base station actually used.
  • the value of the item “location information” indicates the location of the terminal when each cell configuration is selected.
  • the item “location information” may include, for example, latitude, longitude, altitude, etc. as information elements.
  • the value of the item “terminal support band” indicates the frequency band supported by the terminal when each cell configuration is selected.
  • the item “terminal support band” has, for example, the frequency band supported by the terminal (Band1, Band3, Band42, etc.) as an information element, and the value of the supported frequency band is " ⁇ ", and the value of the unsupported frequency band is " ⁇ ".
  • the value is "-”.
  • the second entry in FIG. 4 indicates that Band 1 and Band 42 are supported and Band 3 is not supported.
  • the value of the item "Maximum number of aggregations for a terminal” indicates the maximum number of aggregations supported by the terminal when each cell configuration is selected.
  • the item "ID of band and base station actually used” indicates the combination of band and base station as the selected cell configuration. For example, in the first entry in FIG. 4, Band 1 is selected for communication with the base station with base station ID "101", and Band 3 is selected for communication with the base station with base station ID "23". It is shown that.
  • the cell configuration history data acquisition unit 11 acquires cell configuration history data from the terminal 20 and stores it in the storage unit 12.
  • the storage unit 12 stores cell configuration history data.
  • the terminal 20 may acquire the cell configuration history data by a notification from the terminal 20 each time the terminal 20 selects a cell configuration, or at a prescribed period such as once a day. Cell configuration history data for periods between cycles may be acquired.
  • FIG. 5 is a flowchart illustrating an example of the flow of quality estimation processing according to the embodiment of the present invention.
  • the estimated quality request receiving unit 13 receives estimated quality request information including the location of the terminal, the support band of the terminal, and the maximum number of aggregations (step S101).
  • the quality estimation unit 14 extracts cell configuration history data D1 via the cell configuration history management unit 15 based on the terminal position included in the estimated quality request information (step S102). For example, the quality estimating unit 14 uses a predefined threshold R[m] to calculate the history of cell configurations indicating terminal positions within a radius R[m] or less from the terminal position. It may be extracted as history data D1.
  • the quality estimation unit 14 further extracts cell configuration history data D2 corresponding to the support band of the terminal and the maximum number of aggregations from the extracted cell configuration history data D1 (step S103). For example, the quality estimation unit 14 may extract the history of cell configurations with the same terminal support band and the same maximum aggregation number as the cell configuration history data D2.
  • the quality estimation unit 14 calculates the throughput estimated at the terminal position based on the throughput of the top n patterns calculated for each base station (step S106). For example, the estimated throughput is calculated using the following equation (1).
  • the estimated quality output unit 17 outputs the calculated throughput as estimated quality information (step S107).
  • the throughput in the embodiments described above is an example of information indicating communication quality, and other information may be used.
  • the information indicating communication quality may be received power or the like.
  • the quality estimating device 10 according to this embodiment is realized, for example, by the hardware configuration of a computer 500 shown in FIG. 6.
  • the computer 500 shown in FIG. 6 includes an input device 501, a display device 502, an external I/F 503, a communication I/F 504, a processor 505, and a memory device 506. Each of these pieces of hardware is communicably connected via a bus 507.
  • the input device 501 is, for example, a keyboard, a mouse, a touch panel, or the like.
  • the display device 502 is, for example, a display. Note that the computer 500 does not need to have at least one of the input device 501 and the display device 502.
  • the external I/F 503 is an interface with an external device such as a recording medium 503a.
  • a recording medium 503a examples include a CD (Compact Disc), a DVD (Digital Versatile Disk), an SD memory card (Secure Digital memory card), and a USB (Universal Serial Bus) memory card.
  • the communication I/F 504 is an interface for performing data communication with other devices, equipment, systems, etc.
  • the processor 505 is, for example, various arithmetic devices such as a CPU.
  • the memory device 506 is, for example, various storage devices such as an HDD, an SSD, a RAM (Random Access Memory), a ROM (Read Only Memory), and a flash memory.
  • the quality estimating device 10 can implement the various processes described above by having the hardware configuration of the computer 500 shown in FIG.
  • the hardware configuration of the computer 500 shown in FIG. 6 is an example, and the computer 500 may have another hardware configuration.
  • computer 500 may have multiple processors 505 and multiple memory devices 506.
  • the quality estimating device 10 is realized by reading a program for causing the computer 500 to execute each of the processes described above, and executing the processes specified in the program.
  • the program may be recorded on the recording medium 503a or the like, or may be provided through a network.
  • the communication quality at a designated position is estimated based on the history of the cell configuration selected by the terminal 20, and is output to the terminal 20.
  • the terminal 20 can obtain communication quality estimation results based on the estimated cell configuration, even if it is unknown how the cell configuration will be controlled at the future location of the terminal, for example. Can be done. That is, the accuracy of estimating the communication quality of a terminal in a wireless communication network can be improved.
  • This specification describes at least a quality estimation device, a quality estimation method, and a program described in each section below.
  • (Section 1) a cell configuration history data acquisition unit configured to acquire data including information indicating the location of one or more terminals and indicating a history of cell configurations selected by the one or more terminals; an estimated quality request receiving unit configured to receive information indicating a location from a terminal and accept a request for estimating communication quality at the location; Extracting data indicating the history of the cell configuration based on information indicating the position of the one or more terminals included in the data indicating the history of the cell configuration, and based on the extracted data indicating the history of the cell configuration.
  • the data indicating the history of the cell configuration includes a history of selection of a combination of base stations and frequency bands as the cell configuration, further comprising a quality calculation unit configured to calculate communication quality for each base station, The quality estimation unit is configured to estimate the quality of communication at the location of the terminal that has requested estimation of communication quality, based on the calculated communication quality for each base station.
  • the quality estimation device according to item 1.
  • the data indicating a history of the cell configuration includes a history indicating a frequency band and a maximum number of aggregations supported by the one or more terminals
  • the estimated quality request reception unit is configured to receive information indicating a frequency band and a maximum number of aggregations supported by the terminal that has requested communication quality estimation,
  • the quality estimating unit extracts data indicating the history of the cell configuration based on information indicating the frequency band and maximum number of aggregations supported by the terminal that has requested communication quality estimation, and calculates the data of the extracted cell configuration. configured to estimate the quality of communication at the location of the terminal that requested estimation of communication quality based on data indicating history;
  • the quality estimation device according to item 1 or 2.
  • the quality estimation unit indicates a history of frequently appearing cell configurations from data indicating a history of the cell configuration based on information indicating the position of the one or more terminals included in the data indicating the history of the cell configuration. configured to extract data and estimate the quality of communication at the location of the terminal that has requested estimation of communication quality based on the extracted data indicating the history of the cell configuration;
  • the quality estimation device according to any one of the first to third terms.
  • a computer-implemented quality estimation method comprising: acquiring data including information indicating the location of one or more terminals and indicating a history of cell configurations selected by the one or more terminals; receiving information indicating a location from a terminal and accepting a request for estimating communication quality at the location; Extracting data indicating the history of the cell configuration based on information indicating the position of the one or more terminals included in the data indicating the history of the cell configuration, and based on the extracted data indicating the history of the cell configuration. estimating the quality of communication at the location of the terminal that has requested estimation of communication quality; Quality estimation method.
  • Quality Estimation System 10 Quality Estimation Device 11 Cell Configuration History Data Acquisition Unit 12 Storage Unit 13 Estimated Quality Request Reception Unit 14 Quality Estimation Unit 15 Cell Configuration History Management Unit 16 Quality Calculation Unit 17 Estimated Quality Output Unit 20 Terminal 500 Computer 501 Input Device 502 Display device 503 External I/F 503a Recording medium 504 Communication I/F 505 processor 506 memory device 507 bus

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/JP2022/025842 2022-06-28 2022-06-28 品質推定装置、品質推定方法、及びプログラム Ceased WO2024004053A1 (ja)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013058948A (ja) * 2011-09-09 2013-03-28 Nec Corp 無線アクセスシステムおよび無線アクセス方法
JP2018133718A (ja) * 2017-02-16 2018-08-23 パナソニックＩｐマネジメント株式会社 通信エリア分析装置、方法、及び、プログラム
JP2019149652A (ja) * 2018-02-26 2019-09-05 Kddi株式会社 情報送信装置、通信システム及び通信端末
WO2022038760A1 (ja) * 2020-08-21 2022-02-24 日本電信電話株式会社 通信品質を予測する装置、方法及びプログラム
JP2022063929A (ja) * 2020-10-13 2022-04-25 株式会社デンソー 電波マップ更新装置、及び通信品質特定装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013058948A (ja) * 2011-09-09 2013-03-28 Nec Corp 無線アクセスシステムおよび無線アクセス方法
JP2018133718A (ja) * 2017-02-16 2018-08-23 パナソニックＩｐマネジメント株式会社 通信エリア分析装置、方法、及び、プログラム
JP2019149652A (ja) * 2018-02-26 2019-09-05 Kddi株式会社 情報送信装置、通信システム及び通信端末
WO2022038760A1 (ja) * 2020-08-21 2022-02-24 日本電信電話株式会社 通信品質を予測する装置、方法及びプログラム
JP2022063929A (ja) * 2020-10-13 2022-04-25 株式会社デンソー 電波マップ更新装置、及び通信品質特定装置

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