
自動重發請求
This paper investigates automatic repeat request(ARQ)schemes to meet these new challenges.
文章研究了自動重發請求(ARQ)機制,來滿足這些新的要求。
It efficiently combines cooperative diversity at the physical layer and automatic repeat request(ARQ) at the data link layer.
它把物理層中的協作分集技術和數據鍊路層中的自動請求重傳(ARQ)協議有效地結合起來。
Automatic repeat request (ARQ) schemes and transport control protocol (TCP) are often used as error-control techniques at the link layer and at the transport layer, respectively.
自動重傳請求(ARQ)和傳輸控制協議(TCP)經常被分别用作鍊路層和傳輸層的錯誤控制機制。
Automatic Repeat Request (ARQ) might be used in error control technology.
糾錯技術中可能用到自動重發請求(ARQ) 。
Then I introduce the algorithm of automatic repeat request and calculate the utilization ratio of the link.
接着又介紹了自動請求重傳算法并計算了通常情況下的鍊路利用率。
In 4G communication system, Automatic Repeat reQuest(ARQ) technology is necessary to support multiple mobile terminal to communicating in shared wireless channel.
在4G 高速無線通信中,自動請求重傳(ARQ)技術是無線通信中數據鍊路層所不可缺少的。
In the high rate wireless communication system, automatic repeat request(ARQ)technology is indispensable in link layer, which shields the packet loss of the wireless channel from the upper level.
在高速無線通信中,自動請求重傳(ARQ)是鍊路層不可缺少的技術,它通過重傳向上層屏蔽無線鍊路上包的丢失。
Automatic repeat request (ARQ) schemes have been widely applied to many digital communication systems, especially, computer communication networks.
自動請求重傳(ARQ)方法已經在許多數字通信系統特别是通信網中獲得了廣泛的應用。
Second, the automatic repeat request (ARQ) technology is introduced into the cross-layer design for MIMO-AMC systems.
其次,将自動重傳請求(ARQ)技術引入到MIMO-AMC系統的跨層設計中。
Various advanced wireless communication technologies will be applied in this system such as Hybrid Automatic Repeat Request (HARQ).
各種先進的無線傳輸技術即将在該系統中得到應用,包括混合自動重傳請求(HARQ)技術。
Hybrid Automatic Repeat reQuest(Hybrid ARQ) which is an excellent error control technique has been accepted as a key technique of 3GPP Long Term Evolution(LTE).
混合自動重傳請求(ARQ)作為一種差錯控制技術被采納為3GPP長期演進項目(LTE)的關鍵技術。
Automatic Repeat-Request (ARQ) has been used widely for high reliability and convenience in implementation. But its low performance is shown When channel is in noisy state.
自動重發差錯控制方式由于可靠性高,實現簡單得到廣泛應用,但在信道幹擾較強時效率較低。
In LTE communication system, Automatic Repeat-reQuest(ARQ) technology is essential for communication of multiple mobile terminals in shared wireless channel.
在高速無線通信中,自動請求重傳(ARQ)技術無疑是數據鍊路層所不可缺少的。
Forward-error correction (FEC) and automatic repeat-request (ARQ) are two kinds of error-control in digital communication system.
前向糾錯(FEC)和自動重傳請求(ARQ)是數字通信系統中常用的兩種差錯控制方式。
Currently, there are three kinds of reliability protection mechanisms in WSN, including forward error correction coding(FEC), Automatic Repeat-reQuest (ARQ), and multi-path routing.
目前,在WSN中主要使用三種可靠性保障機制,包括前向糾錯編碼(FEC)、丢包重傳(ARQ)和多徑冗餘發送。
The first is the forward error control (FEC) and the second is the automatic-repeat-request (ARQ).
通信系統中的差錯控制方法基本可分為兩大類,即前向糾錯編碼(FEC)和自動重傳請求(ARQ)。
自動重傳請求(Automatic Repeat Request, ARQ) 是數據通信和網絡協議中一種重要的錯誤控制機制,主要用于确保數據在不可靠信道(如無線或有線網絡)上傳輸的可靠性。其核心功能是檢測傳輸過程中出現的錯誤(如比特錯誤、數據包丢失),并自動觸發錯誤數據的重傳,直至接收方正确接收或達到最大重試次數。
核心原理與過程:
主要類型:
應用場景:
ARQ通過冗餘傳輸換取可靠性,是鍊路層和傳輸層錯誤控制的基礎。其設計需權衡效率(吞吐量、時延)與可靠性,常與前向糾錯(FEC)技術結合使用,形成混合ARQ(HARQ),以優化性能(如5G中的HARQ機制)。
權威參考來源:
自動重傳請求(Automatic Repeat reQuest, ARQ)是計算機網絡中用于實現可靠數據傳輸的一種機制,主要應用于數據鍊路層和傳輸層。以下是其詳細解釋:
ARQ通過确認(ACK)和超時重傳機制,在不可靠的通信信道上提供可靠的數據傳輸。當發送方未收到接收方的确認響應時,會自動重傳數據包。
ARQ機制平衡了傳輸效率與可靠性,是網絡協議設計中解決丢包和錯誤的經典方案。如需進一步了解具體協議實現,可參考通信或計算機網絡相關文獻。
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