実測もしくは推計に基づく端末移動特性を付与しうる移動シミュレータ: 移動通信ネットークシミュレータへの組込み

摘要

移動通信ネットワークを設計・計画・運用する上で、そのトラヒック特性を明確にすることは重要ある．移動通信端末は歩行者，自動車，鉄道車両などの様々なプラットフォームに乗って移動するそのためトラヒック特性も端末の移動特性に大きく依存するのが特徴である．そこで端末の移動特性を実測もしは推計により求めた．取得した端末移動特性を通信シミュレータに組込める移動シミュレータを開発した．%It is important to clarify teletraffic characteristics for planning, designing, and operating mobile communication networks. Mobile communication terminals move around on the various platforms such as pedestrians, automobiles, and trains. Teletraffic characteristics of the mobile communication networks, thereupon, depend on the platforms motion. Platform loci have been measured for automobiles and pedestrians by using Global Positioning System and an autonomons navigation system; and estimated for train by using geolocations data of station and timetables. The platform motion has been characterized in terms of cell dwell time and transition probability in hypothetical cellular systems. A motion simulator of these platforms has been developed for combining with communication network simulators to study the teletraffic characteristics of mobile communication networks.