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- TCP-Friendly Rate Control (TFRC) is a congestion control mechanism designed for unicast flows operating in an Internet environment and competing with TCP traffic. The goal is to compete fairly with TCP traffic on medium timescales, but to be much less variable than TCP on short timescales. TCP congestion control works by maintaining a window of bytes that have not yet been acknowledged. This window is increased by a known value(α) every round-trip time if no packets (a collection of bytes traversing the network) have been lost, and is decreased by a known value(β) if packet loss is detected. Thus TCP's window (and hence throughput) is a function of the losses observed in the network and the round-trip time experienced by the flow. The idea behind TFRC is to measure the loss probability and round-trip time and to use these as the parameters to a model of TCP throughput. The expected throughput from this model is then used to directly drive the transmit rate of a TFRC flow. RFC 5348 - TCP Friendly Rate Control (TFRC): Protocol Specification (en)
- 友善式傳輸層協定壅塞控制（英語：TCP-Friendly Rate Control，縮寫為TFRC）是一種透過觀察丟包（Packet loss）的方式，用以調整TCP的速率波動的控制方法。最早定義於 RFC 3448 ，現行定義為 RFC 5348 。它的目的在於在中時間段範圍内與網路中的TCP數據流公平競爭，而在短時間内與其相比則變化更小。 友善式傳輸層協定壅塞控制的工作原理在於始終保持一部分未被告知收到的數據；而若無丟包，則這部分數據的大小會在每個來回通訊延遲中減少已知值α；但若有丟包，則會增加已知值β。也就是説，TCP所保有的數據量（與數據流量）實際上是基於丟包與來回通訊延遲的函數。 友善式傳輸層協定壅塞控制的目的在於基於丟包及來回通訊延遲搭建TCP數據流量的模型，而此數據流量的期待值則被直接用以控制友善式傳輸層協定壅塞控制的傳輸速率。 (zh)
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- 友善式傳輸層協定壅塞控制（英語：TCP-Friendly Rate Control，縮寫為TFRC）是一種透過觀察丟包（Packet loss）的方式，用以調整TCP的速率波動的控制方法。最早定義於 RFC 3448 ，現行定義為 RFC 5348 。它的目的在於在中時間段範圍内與網路中的TCP數據流公平競爭，而在短時間内與其相比則變化更小。 友善式傳輸層協定壅塞控制的工作原理在於始終保持一部分未被告知收到的數據；而若無丟包，則這部分數據的大小會在每個來回通訊延遲中減少已知值α；但若有丟包，則會增加已知值β。也就是説，TCP所保有的數據量（與數據流量）實際上是基於丟包與來回通訊延遲的函數。 友善式傳輸層協定壅塞控制的目的在於基於丟包及來回通訊延遲搭建TCP數據流量的模型，而此數據流量的期待值則被直接用以控制友善式傳輸層協定壅塞控制的傳輸速率。 (zh)
- TCP-Friendly Rate Control (TFRC) is a congestion control mechanism designed for unicast flows operating in an Internet environment and competing with TCP traffic. The goal is to compete fairly with TCP traffic on medium timescales, but to be much less variable than TCP on short timescales. The idea behind TFRC is to measure the loss probability and round-trip time and to use these as the parameters to a model of TCP throughput. The expected throughput from this model is then used to directly drive the transmit rate of a TFRC flow. (en)
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- TCP Friendly Rate Control (en)
- 友善式傳輸層協定壅塞控制 (zh)
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