@article{oai:ipsj.ixsq.nii.ac.jp:00009962,
 author = {森谷, 修 and 小林, 浩 and 森, 靖 and 高橋, 武宏 and Osamu, Moriya and Hiroshi, Kobayashi and Yasushi, Mori and Takehiro, Takahashi},
 issue = {4},
 journal = {情報処理学会論文誌},
 month = {Apr},
 note = {最短フレーム長に依存することなく任意のネットワーク長を設定でき，また衝突発生確率を低減すべく負荷トラヒックに応じて複数個の衝突回避（CA）スロットを適応的に設けるSynchronous CSMA/v-MCA 方式では，ネットワーク長が長くなるほど往復伝送遅延時間の介在による性能の劣化が顕著になる．提案するフライング送信方式は，上りチャネルの空き時刻を予測し，同時刻をめがけてCA フレームやMAC フレームを先行送信させようとするものである．理論解析とシミュレーション結果から，従来方式に比べ40 km のネットワーク長において2 倍以上の高スループット特性が得られることを示した．さらに，遅延時間の増大を抑えつつ，より高いスループット特性を得るうえでの上限CA スロット数の適正化についても議論した．, This research presents a contention-based access system in which the number of variable collision avoidance (CA) slots is controlled adaptively according to the volume of traffic in order to reduce the probability of a collision. This system can be operated over a network of any length without the use of frame-length restrictions. However, a potential drawback is the rapid degradation of throughput performance due to round trip time (RTT), which is proportional to the network length. The proposed scheme, adapted to synchronous CSMA/v-MCA systems, is to precede transmission of CA and MAC frames in order to minimize the time wasted on upstream channels. Data from both theoretical analyses and computer simulations indicate that the system provides throughput performance that is at least twice the performance of the conventional system in networks 40 km in length. Furthermore, the assignable maximum number of CA slots to achieve high throughput while maintaining low latency is also discussed.},
 pages = {1758--1766},
 title = {PTMP型アクセスネットワークにおけるSynchronous CSMA/v-MCA方式へのフレーム先行送信制御の適用},
 volume = {48},
 year = {2007}
}