THROUGHPUT ESTIMATION DEVICE AND THROUGHPUT ESTIMATION METHOD

• Main Authors: OMI YASUSHI, FUJIWARA RYOSUKE, SUZUKI HIROSHI, ISHINO MASANORI, IGARASHI YUICHI
• Format: Patent
• Language: English; Japanese
• Published: 07.12.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; ENSURING THE SAFETY OF RAILWAY TRAFFIC; GUIDING RAILWAY TRAFFIC; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; RAILWAYS; TRANSMISSION; TRANSPORTING; VEHICLES IN GENERAL; WIRELESS COMMUNICATIONS NETWORKS

To estimate throughput propagation from path classification, reception power of a radio terminal every time and the number of allocation resources to a railroad radio system.SOLUTION: A throughput estimation device includes a database for respectively recording reception power, the number of allocation resources and throughput observed in the past together with date and time and a position, together with related information, a recording part for determining a propagation path classification corresponding to a position to be an estimation object, and recording information required to estimate throughput to the database on the basis of the date and time and the propagation path classification of the estimation object by updating or adding data, and an estimation part for calculating respective estimation values of the reception power and the number of allocation resources from respective past reception power and the number of past allocation resources recorded in the database every date and time and position, and a throughput estimation value from respective estimation values of the reception power and the number of allocation resources and the past throughput recorded in the database on the basis of the date and time and the propagation path classification of an estimation object.SELECTED DRAWING: Figure 7 【課題】鉄道無線システムに対し、伝搬路分類及び時間毎に無線端末の受信電力と割り当てリソース数からスループットの推定を行う。【解決手段】スループット推定装置として、日時及び位置と共に、実測した過去の、受信電力、割り当てリソース数及びスループット夫々を関連する情報と共に記録したデータベースと、推定対象となる位置に対応する伝搬路分類を決定し、推定対象の日時及び伝搬路分類に基づきデータベースに対してスループットを推定するに必要な情報をデータの更新又は追加により記録する記録部と、推定対象の日時及び伝搬路分類に基づき、日時及び位置毎にデータベースに記録された過去の受信電力及び過去の割り当てリソース数夫々から受信電力及び割り当てリソース数夫々の推定値と、受信電力及び割り当てリソース数夫々の推定値並びにデータベースに記録された過去のスループットからスループットの推定値とを求める推定部とを備える。【選択図】図７