• 作者： 吳中實; 郭芳璋
• 作者服務機構： 國立中央大學電機工程學系; 中華電信研究所
• 中文摘要： 在非同步傳輸網路中，用量參數控制（UPC）是根據訊務源事先宣告的參數來監督資料之傳送。ATM公論會建議以通用速率法則（GCRA）作為用量參數控制之依據。本論文探討ATM多工器之效能，其中封包在進入網路前先受到控制器管制。受控制器監督的參數包括平均速率、尖峰率、延遲變異量以及尖峰率封包量，基於採用GCRA控制器可能造成的最嚴重情況，我們導出延遲時間的上限值，以作為系統效能評估的參考。
• 英文摘要： In ATM networks, a Usage Parameter Control (UPC) strategy has to regulate incoming trafficaccording to the characteristics of the sources declared at call set-up. The Generic Cell Rate Algorithm(GCRA) is recommended by the ATM Forum for use in performing UPC at the User Network Interface(UNI) in ATM networks. In this paper, we study the characteristics of a multiplexer with a sufficientlylarge buffer in which cell arrivals are policed by a GCRA enforcer before entering the system. In additionto mean rate, the peak rate and cell delay variation (CDV) are also taken into consideration for each GCRAenforcer. Based on the the worst arrival pattern (or the worst output pattern from the GCRA enforcer),we derive the upper bound of the waiting time expressed as a function of the GCRA parameters and thenumber of sources.
• 中文關鍵字： ATM; multiplexer; GCRA
• 英文關鍵字： --