packet loss ratio 中文意思是什麼
packet loss ratio
解釋
丟包率-
We introduce two thresholds of the packet loss ratio to divide the network load condition into three status : congest, normal, idle
通過兩個門限值c 、 _ ,將網路的負載狀況分為擁塞、適中、空閑三種狀態,進一步減小發送速率的振蕩頻率。 -
Sending rate could be adjusted according to the rate scheme in the end host. simulations showed that etcc can adjust sending rate smoothly, decrease delay and packet loss ratio while maintaining good tcp - friendliness
模擬實驗表明etcc機制可以在保證tcp友好的前提下平滑調節多媒體流的發送速率,同時降低網路的延時和丟包率。 -
The main contributions of the thesis are : ( 1 ) we present an end - to - end transport architecture using the rtp / udp / ip protocol stack and employ an efficient and robust packetization algorithm for mpeg - 4 video bit - streams at the sync layer for internet transport. ( 2 ) we study the congestion control mechanism based on aimd algorithm, and make improvement in order to reduce the oscillation of transimition rate due to tremendous contrast of packet loss ratio caused by dynamical change of the network load
論文的主要貢獻在於:提出了基於rtp的mpeg - 4視頻傳輸模型並充分利用mpeg - 4的videoobjectplane ( vop )特性,採用適用於mpeg - 4視頻傳輸的rw載荷格式及組包演算法,同時具有傳輸的高效性和丟包的魯棒性。 -
We chose suitable tcp throughput model to estimate the available bandwidth correctly, using the estimated round trip time and packet loss ratio for the next time interval as parameters of the model to achive the accuracy of estimated network bandwidth. as the observed losses and round trip time vary very dynamically, adjust the sending rate equivalent to the amount of tcp throughput may result in a rather fluctuant sending rate. so we present a rate adjustment like tcp congestion control based on aimd, which increases its sending rate by an additive inereease rate
根據mpeg4視頻流應用的特點,選擇合適的吞吐量模型,進行合理的參數估計,並根據計算出的帶寬進行相應的速率調整來實現擁塞控制,我們使用未來rtt的估計值和分組丟失率的估計值作為吞吐量模型的參數,增強了控制的實時性,弱化了業務的振蕩性,提高了帶寬預測的準確性;在進行速率調整時,不是簡單地將發送速率調整到與tcp吞吐量模型一致,而是採用類似tcp的aimd策略來調節發送速率,減小了發送速率的振蕩性。
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