arq system 中文意思是什麼
arq system
解釋
自動請求重發系統-
High speed uplink packet access ( hsupa ) is a new work item of technical specification release 6 in 3gpp. wcdma system. the techniques of this work item, i. e. node b controlled scheduling, hybrid arq with chase combining, shorter tti, are to improve the performance of uplink dedicated transport channels, i. e. to increase capacity and throughput and reduce delay
在hsupa中通過採用基站nodeb控制調度、結合了軟合併的混合自動重傳請求（ harq ） 、更短的傳輸時間間隔（ tti ）等關鍵技術，不但增強了系統容量與覆蓋還使用戶設備（ ue ）能獲得更大的上行吞吐、更小的傳輸延時。 -
Adopting archimedes number arq as similarity standard, the author determine every kind of similarity scale according to geometry scale 1 / 18 and other limit condition, at the same time, complete organization of model essence, simulation heat source system, design and arrangement of air supply and exhaust system according to every kind of similarity scale
採用熱量阿基米德數arq作為相似準則，按照1 / 18的幾何比例尺以及其他制約條件確定各種相似比例尺。根據各種相似比例尺完成模型本體結構、模擬熱源系統及模型送排風系統的設計和配置。 -
The techniques of the work item, i. e. node b controlled scheduling, hybrid arq, shorter tti, are to improve the performance of uplink dedicated transport channels, i. e. to increase capacity and throughput and reduce delay. cell - level system performance of hsupa is described through the simulation results, including cell throughput of uplink packet service, system delay, capacity, fairness of ues, radio resource occupation and system device utilization
為了提高wcdma網路傳統的上行專用傳輸通道（ dch ）的性能，即提高覆蓋、吞吐量和減少延時， 3gpp決定開發hsupa技術，提出了增強型的上行專用傳輸通道（ e - dch ） ，這是一條新增的上行專用傳輸通道，專用於hsupa 。 -
This thesis discusses detailedly the flow process of ip multicast, error discovery method and error recovery method, and also proposes a new error control method to implement reliable multicast in computer supported cooperative design system : serial integrates with timer are used to discover error, arq mechanism based on nak feedback is modified to correct error, " sliding window " mechanism is imported to make up the drawbacks of traditional nak, and " slotting and damping " technique is used to resolve the question of " feedback implosion " which results from multicast reliability control
詳細研究了ip多播傳輸的流程、數據傳輸的差錯檢測方法及差錯恢復方法，提出在協同設計系統中實現可靠多播的控制方法：利用序列號和計時器相結合的方法進行傳輸數據的差錯檢測，改進了基於nak反饋信息的arq重傳機制來實現差錯恢復，並引入了滑動窗口機制來解決傳統nak方法的不足，採用「時間分槽?抑制」技術來解決由於進行多播可靠控制而產生的「反饋內陷」問題。
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