本文選題：自適應(yīng)流媒體碼率調(diào)節(jié) + 路由算法�。� 參考：《小型微型計算機(jī)系統(tǒng)》2017年06期

【摘要】：隨著互聯(lián)網(wǎng)技術(shù)的快速發(fā)展以及智能設(shè)備的普及,基于HTTP的動態(tài)自適應(yīng)流媒體(Dynamic Adaptive Streaming over HTTP,DASH)業(yè)務(wù)發(fā)展迅速.但在帶寬受限網(wǎng)絡(luò)中,大規(guī)模用戶的視頻請求,將會加重網(wǎng)絡(luò)負(fù)載,嚴(yán)重影響網(wǎng)絡(luò)帶寬資源的有效利用,同時用戶碼率調(diào)節(jié)缺乏全局協(xié)調(diào)控制機(jī)制,容易造成網(wǎng)絡(luò)擁塞.針對軟件定義網(wǎng)絡(luò)中的DASH視頻傳輸業(yè)務(wù),將視頻業(yè)務(wù)提供商長期平均收益最大化作為優(yōu)化目標(biāo),設(shè)計并實現(xiàn)了基于神經(jīng)元動態(tài)規(guī)劃的DASH視頻路由和用戶碼率調(diào)節(jié)聯(lián)合決策算法.最后,通過在Mininet平臺上建立SDN(Software-Defined Networking)網(wǎng)絡(luò)環(huán)境并進(jìn)行對比實驗,我們驗證了本文提出的聯(lián)合決策算法能夠提高網(wǎng)絡(luò)帶寬資源利用率,最大化DASH視頻業(yè)務(wù)提供商長期平均收益.
[Abstract]:With the rapid development of Internet technology and the popularization of intelligent devices, dynamic Adaptive Streaming over HTTP DASH (dynamic Adaptive Streaming over DASH) service based on HTTP is developing rapidly. However, in the bandwidth constrained network, the video request of large-scale users will increase the network load, seriously affect the effective use of network bandwidth resources, at the same time, the user rate regulation lack of a global coordination control mechanism, which can easily lead to network congestion. Aiming at the DASH video transmission service in the network defined by software, the maximum long-term average income of the video service provider is taken as the optimization goal. A joint decision making algorithm of DASH video routing and user rate adjustment based on neuron dynamic programming is designed and implemented. Finally, by establishing the SDN(Software-Defined networking network environment on the Mininet platform and making a comparative experiment, we verify that the proposed joint decision algorithm can improve the utilization of network bandwidth resources and maximize the long-term average income of DASH video service providers.
【作者單位】： 中國科學(xué)技術(shù)大學(xué)電子工程與信息科學(xué)系;
【基金】：國家自然科學(xué)基金面上項目(61573329)資助;國家自然科學(xué)基金重點項目(61233003)資助 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項資金項目(WK2100100026)資助
【分類號】：TN919.8;TP393.0

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本文編號：1852635