実・仮想空間を跨るインタラクションを実現するためのQoS適応機構とその評価  [in Japanese] QoS Adaptation Mechanism to Realize Interaction between Virtual and Real Worlds and its Evaluation  [in Japanese]

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Abstract

実空間のモバイルユーザと遠隔のネットワーク・ユーザの間のスムーズな共同作業およびインタラクションを実現するには,ユーザがリアルタイムに動くオブジェクトを観測できるように,各オブジェクトの位置と方向の情報(AR情報と呼ぶ)をリアルタイムに配送する必要がある.しかし,多数の動くオブジェクトを対象にする場合,無線LANなどの帯域幅の限られた環境下でAR情報をリアルタイムに配送するのは,しばしば困難である.そこで,本論文では,ユーザごとに,ユーザにとってより重要なオブジェクトがより高い頻度で更新されるようAR情報の配送頻度を自動調整するQoS適応機構を提案する.評価実験の結果,提案機構により,一般的なネットワーク環境を用いたモバイルユーザと遠隔ユーザの環境上で実用的な更新レートおよび短い遅延時間でオブジェクトが更新されることを確認した.In order to realize smooth cooperative work and interaction between mobile users in the real world and remote network users, it is required to allow mobile users and remote users to share the same view of a shared space including many moving objects in sufficient quality for interaction. For this purpose, information (called AR information) of the position and orientation of each object must be delivered to user terminals, so that the users can see moving objects updated in real-time. However, it is difficult to deliver AR information in real-time due to limited network bandwidth in an ordinary wireless LAN or Internet environment. In this paper, we propose a QoS adaptation mechanism which allows users to see more important objects with a higher update frequency. Through experiments on network environments with various available bandwidths, we confirmed that the proposed mechanism achieves a practical framerate of object update between mobile users and remote users with reasonably short delay in pervasive network environment.

In order to realize smooth cooperative work and interaction between mobile users in the real world and remote network users, it is required to allow mobile users and remote users to share the same view of a shared space including many moving objects in sufficient quality for interaction. For this purpose, information (called AR information) of the position and orientation of each object must be delivered to user terminals, so that the users can see moving objects updated in real-time. However, it is difficult to deliver AR information in real-time due to limited network bandwidth in an ordinary wireless LAN or Internet environment. In this paper, we propose a QoS adaptation mechanism which allows users to see more important objects with a higher update frequency. Through experiments on network environments with various available bandwidths, we confirmed that the proposed mechanism achieves a practical framerate of object update between mobile users and remote users with reasonably short delay in pervasive network environment.

Journal

  • 情報処理学会論文誌

    情報処理学会論文誌 50(2), 765-776, 2009-02-15

    一般社団法人情報処理学会

Codes

  • NII Article ID (NAID)
    110007970370
  • NII NACSIS-CAT ID (NCID)
    AN00116647
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    1882-7764
  • Data Source
    NII-ELS  IR  IPSJ 
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