JP6556356B2 - 無線ネットワーク監視方法及びこの方法を実施するネットワークノード - Google Patents
無線ネットワーク監視方法及びこの方法を実施するネットワークノード Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
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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
- H04W16/14—Spectrum sharing arrangements between different networks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/40—Handling position reports or trackside vehicle data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/70—Details of trackside communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- 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
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/005—Discovery of network devices, e.g. terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/005—Moving wireless networks
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- Train Traffic Observation, Control, And Security (AREA)
Description
Nは、セル内の列車とサーバー15との間で現在確立されている通信リンクの総数を表す。各通信リンクは、1つの列車に対応し、アップリンク又はダウンリンクのいずれかのリンク方向を有することが想定される。図1の例示的なネットワークを参照すると、アップリンク通信は、OBUからサーバー15への送信に対応し、ダウンリンク通信は、逆方向、すなわち、サーバー15からOBUへの送信に対応する。
Claims (13)
- 無線アクセスインフラストラクチャ及び無線デバイスを備える無線ネットワークにおける送信を監視する方法であって、
無線デバイスの数の所定の分布に従って、推定無線デバイス数を生成することと、
軌道の所定の分布に従って前記推定無線デバイス数の各々の推定軌道を生成することと、
前記推定無線デバイス数の無線デバイスごとに、前記無線デバイスの前記推定軌道を用いて、時間窓中の無線送信エラーの確率の推定分布を求めることと、
前記無線デバイスの前記時間窓中の前記無線送信エラーの前記それぞれの確率の推定分布に基づいて前記無線ネットワークの性能指数の推定値を求めることと、
を含む、方法。 - 前記性能指数は、前記時間窓中の前記無線ネットワークにおける無線送信エラーの発生の確率を示す、請求項1に記載の方法。
- 前記時間窓の長さは、0.5秒から2秒までである、請求項1又は2に記載の方法。
- 前記無線ネットワークの性能指数の推定値を求めることは、
前記時間窓中の前記無線送信エラーの確率の推定分布に従って前記時間窓中の無線送信エラーの推定確率を生成することと、
前記時間窓中の前記生成された無線送信エラーの推定確率において前記無線ネットワークにおけるリソースを配分するのに用いられるリソース配分アルゴリズムを実行することと、
を含む、請求項1から3までのいずれか1項に記載の方法。 - 請求項1に記載の方法を反復することによって前記性能指数の分布の推定値を求めることを更に含む、請求項1から4までのいずれか1項に記載の方法。
- 前記無線デバイス数の推定値を求めることは、前記無線デバイス数の確率密度関数モデルの推定値に基づく、請求項1から5までのいずれか1項に記載の方法。
- それぞれの軌道の推定値を求めることは、前記無線デバイスの各々の位置及び速度の推定同時確率密度に基づく、請求項1から6までのいずれか1項に記載の方法。
- それぞれの軌道の推定値を求めることは、各モバイルユニットのケーションが前記時間窓にわたって同じままである軌道の分布に基づく、請求項1から6までのいずれか1項に記載の方法。
- 前記無線ネットワークは、通信ベースの列車制御(CBTC)システムに含まれ、前記無線デバイスは、列車に搭載され、前記方法は、前記性能指数の分布の前記推定値に基づいて列車停止分布の推定確率を求めることを更に含み、列車停止は、前記時間窓中の前記無線ネットワークにおける無線送信エラーの出現についてトリガーされる、請求項5に記載の方法。
- 次の列車停止までの予測時間の推定確率分布を求めることと、該次の列車停止までの予測時間の該推定確率分布を用いて列車停止値の目標確率を計算することと、該列車停止値の目標確率が所定の閾値を超えることに応答してアラートを生成することとを更に含む、請求項9に記載の方法。
- 次の列車停止までの予測時間の推定確率分布を求めることと、該次の列車停止までの予測時間の該推定確率分布を用いて列車停止値の目標確率を計算することと、該列車停止値の目標確率に等しい列車停止確率を有する確率が所定の閾値を超えている列車の臨界数を求めることとを更に含む、請求項9に記載の方法。
- プロセッサ、該プロセッサに作動的に接続されたメモリを備える無線ネットワーク内のネットワークノードであって、請求項1から11までのいずれか1項に記載の送信を監視する方法を実行するように構成される、ネットワークノード。
- コンピューター可読媒体において有形に具現化されたコンピュータープログラムコードを備え、前記コンピュータープログラムコードは、コンピューターシステムに提供され、実行されると、前記コンピューターシステムに、請求項1から11までのいずれか1項に記載の送信を監視する方法の手順を実行させる命令を含む、コンピュータープログラム。
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EP16305429.9 | 2016-04-12 | ||
EP16305429.9A EP3232721B1 (en) | 2016-04-12 | 2016-04-12 | Method for wireless network monitoring and network node for implementing the same |
PCT/JP2017/014163 WO2017179462A1 (en) | 2016-04-12 | 2017-03-29 | Method for wireless network monitoring and network node for implementing the same |
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EP (1) | EP3232721B1 (ja) |
JP (1) | JP6556356B2 (ja) |
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US11558097B2 (en) * | 2019-11-08 | 2023-01-17 | Qualcomm Incorporated | Enhancements to channel state information reporting |
EP3836621B1 (en) * | 2019-12-13 | 2023-10-18 | Fluidmesh Networks S.r.l. | Antenna keyhole management in wireless radio communication |
CN111246506B (zh) * | 2020-01-15 | 2023-04-07 | 四川众合智控科技有限公司 | 基于rssi数据的图型化分析方法 |
US12034620B2 (en) * | 2020-03-06 | 2024-07-09 | Nokia Solutions And Networks Oy | Forward error correction |
IT202000010204A1 (it) * | 2020-05-07 | 2021-11-07 | Nidec Asi S P A | Sistema per la trasmissione di dati in un impianto di trasporto e corrispondente sistema di trasporto |
EP3919344A1 (en) * | 2020-06-05 | 2021-12-08 | Mitsubishi Electric R&D Centre Europe B.V. | Method for geolocating an interference source in a communication-based transport system |
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JP3461167B2 (ja) * | 2001-02-07 | 2003-10-27 | 株式会社日立製作所 | 位置計算方法及び位置算出装置 |
ATE383720T1 (de) * | 2003-11-28 | 2008-01-15 | Telecom Italia Spa | Verfahren und vorrichtung zur bewertung der leistung eines mobilfunknetzes |
JP4818210B2 (ja) * | 2007-07-03 | 2011-11-16 | 三菱電機株式会社 | 無線データ通信シミュレーション装置 |
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US9414247B2 (en) * | 2011-02-21 | 2016-08-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Service problem diagnosis for mobile wireless networks |
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EP2688351B1 (en) * | 2012-07-20 | 2018-10-24 | Mitsubishi Electric R&D Centre Europe B.V. | Method and device for allocating resources for a downlink communication on a frequency selective channel |
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US20200120510A1 (en) | 2020-04-16 |
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