@techreport{oai:ipsj.ixsq.nii.ac.jp:00034250, author = {川崎, 将和 and 河本, 麻衣 and 重安, 哲也 and 松野, 浩嗣 and Masakazu, Kawasaki and Mai, Kawamoto and Tetsuya, Shigeyasu and Hiroshi, Matsuno}, issue = {61(2006-DPS-127)}, month = {Jun}, note = {代表的な無線LAN規格であるIEEE802.11では,パケットの衝突確率を低く抑えるために,Binary Exponential BackofT(BEB)方式を採用している.BEB方式は単純な操作でパケット衝突を軽減できるアルゴリズムであるが,高ネットワーク負荷や,隣接端末の偏りなどにより,送信機会の不公平が生じてしまう.そこで本稿では,ネットワーク負荷や隣接端末の偏りと不公平状態との関係について議論を行う.また,既存のIEEE802.11方式との互換性を維持しつつ,不公平状態を解決するために,適応的かつ自律的にフレームバーストを用いた手法を提案し,計算機シミュレーションによって評価したので,結果について報告する., IEEE802.11, which is a most and widely used wireless LAN standard,employs Binary Exponential Backoff (BEB)for reducing packet collisions. Although the BEB can avoid effectively packet collision by a simple mechanism, transmission unfairness arises under the high traffic environment and/or inequality of numbers of neighboring terminals situation. This paper discusses about relations between unfairness and aboves,and proposes a method of frame-burst transmission with adaptive and autonomous controling for solving unfairness problem in keeping compatibility with legacy lEEE802.11DCF terminals. From the results of computer simulations, it is also reported that, our techniques improve fairness effectively with no performance degradation.}, title = {IEEE802.11DCFにおける端末間の送信機会公平化に関する研究}, year = {2006} }