@techreport{oai:ipsj.ixsq.nii.ac.jp:00069135,
 author = {石原, 進 and 大沢, 昂史 and 稲垣, 徳也 and Susumu, Ishihara and Takashi, Osawa and Tokuya, Inagaki},
 issue = {54},
 month = {Mar},
 note = {本論文では，中継ノードの通信指向性を同期して変更することで，より少数の中継ノードで領域をカバー可能とする階層型センサネットワークのアーキテクチャ，Power Saving by Synchronized Cooperation of Smart Antennas (PSmart) を提案する．本手法は中継ノードのビーム方向を常に向かい合わせるようにすることで，中継ノード間距離を長くすることができるため，常に稼動する中継ノードの数を減らすことができ，中継ノード稼働のための電力消費，並びに中継ノードの設置コストを低減できる．本論文では，PSmart における通信方法ならびにビーム方向同期のための手順，およびその省電力効果について議論する．, This paper proposes architecture of hierarchical sensor networks which can cover a monitoring region with small number of relay nodes by synchronously switching the directivity of antennas of relay nodes. The proposed architecture, Power Saving by Synchronized Cooperation of Smart Antennas (PSmart), makes the directional beam of antennas on neighboring relay nodes face each other. Thus the distance between relay nodes can be longer than conventional architecture which uses Directional-Omni beam communication. This reduces the number of relay nodes and saves power consumption of them and the network deployment cost. This paper discusses the communication scheme in PSmart and the way for synchronizing the schedule of beam direction change and its effect on power consumption.},
 title = {通信指向性の同期切り替えを行う階層型省電力無線センサネットワーク},
 year = {2010}
}