【摘要】：重疊網(wǎng)絡(luò)中的多徑傳輸有助于克服帶寬瓶頸,并且通過路徑冗余來提升用戶體驗(yàn)質(zhì)量,是網(wǎng)絡(luò)傳輸技術(shù)的一個(gè)重要發(fā)展方向。在面向業(yè)務(wù)體驗(yàn)質(zhì)量的多徑傳輸方面,總體上還處于技術(shù)研發(fā)的初級(jí)階段,特別在相關(guān)傳輸控制機(jī)制方面,還沒有可用的方案。本文主要研究多徑重疊網(wǎng)絡(luò)中面向業(yè)務(wù)體驗(yàn)質(zhì)量的傳輸控制機(jī)制,在應(yīng)用層實(shí)現(xiàn)數(shù)據(jù)傳輸轉(zhuǎn)發(fā)處理是一種典型的重疊網(wǎng)絡(luò)技術(shù),基于重疊網(wǎng)絡(luò)實(shí)現(xiàn)多徑傳輸,實(shí)際上降低了多徑傳輸應(yīng)用的技術(shù)門檻。建立多路徑傳輸條件只是實(shí)現(xiàn)多徑傳輸?shù)幕A(chǔ),多徑傳輸?shù)男阅芎托矢嘁蕾囉诙鄰絺鬏斂刂茩C(jī)制和協(xié)議,特別是對(duì)于面向業(yè)務(wù)體驗(yàn)質(zhì)量的多徑傳輸,需要綜合考慮業(yè)務(wù)傳輸需求和路徑QoS條件的動(dòng)態(tài)變化等多種要素,同時(shí)依然要保留傳輸分組之間的時(shí)間序列關(guān)系。傳輸控制機(jī)制需要平衡傳輸效率和可靠性的關(guān)系,以滿足用戶的業(yè)務(wù)體驗(yàn)質(zhì)量(QoE)為基本目標(biāo)。本文總結(jié)分析了現(xiàn)有的多徑傳輸協(xié)議,結(jié)合重疊網(wǎng)絡(luò)中繼路徑特征和媒體業(yè)務(wù)實(shí)時(shí)傳輸?shù)男枨?深入研究了相關(guān)的多徑傳輸控制機(jī)制和子流重組辦法。主要工作和成果是：1)提出基于權(quán)值計(jì)算多徑傳輸控制機(jī)制,設(shè)計(jì)了兩種多徑負(fù)載分配算法,根據(jù)數(shù)據(jù)業(yè)務(wù)特征與路徑狀態(tài),對(duì)每條路徑傳輸能力進(jìn)行綜合評(píng)價(jià),根據(jù)QoE最優(yōu)預(yù)測(cè)結(jié)果確定各條路徑的權(quán)值,根據(jù)權(quán)值分配負(fù)載。2)設(shè)計(jì)了基于服務(wù)質(zhì)量反饋的多徑傳輸控制機(jī)制,在發(fā)送端設(shè)置令牌桶,負(fù)載根據(jù)令牌桶中指令選擇相應(yīng)的路徑進(jìn)行傳送,在接收端設(shè)置反饋“應(yīng)答消息”,發(fā)送端通過接收“應(yīng)答消息”來判斷各條路徑的當(dāng)前狀況,從而決定下一步的路徑令牌指令的設(shè)定。在此基礎(chǔ)上還提出將兩種機(jī)制進(jìn)行有效的結(jié)合,即在基于服務(wù)質(zhì)量反饋的多徑傳輸控制機(jī)制中加入負(fù)載分配算法,同時(shí)根據(jù)接收端對(duì)各條路徑的傳輸狀態(tài)反饋,動(dòng)態(tài)調(diào)整負(fù)載分配策略。3)提出了一種基于動(dòng)態(tài)緩沖的子流重組機(jī)制,設(shè)計(jì)了相應(yīng)的重組辦法。在接收端設(shè)置緩沖區(qū),將各條子流傳輸?shù)臄?shù)據(jù)包進(jìn)行排序后,再傳遞給數(shù)據(jù)處理器,從而減弱時(shí)延抖動(dòng)的影響。根據(jù)丟包率和時(shí)延等參數(shù),動(dòng)態(tài)調(diào)整緩沖區(qū)的大小。最后通過網(wǎng)絡(luò)仿真實(shí)驗(yàn),驗(yàn)證了本文提出的面向業(yè)務(wù)體驗(yàn)質(zhì)量的多徑傳輸控制機(jī)制具有合理性,其中的負(fù)載分配算法具有可行性,能夠?qū)崿F(xiàn)數(shù)據(jù)業(yè)務(wù)的多徑傳輸控制。
[Abstract]:Multi-path transmission in overlapping networks helps overcome bandwidth bottlenecks and improves user experience quality through path redundancy, which is an important development direction of network transmission technology. In the aspect of service experience quality oriented multipath transmission, it is still in the initial stage of technology research and development, especially in the related transmission control mechanism, there is no available scheme. In this paper, the transmission control mechanism oriented to service experience quality in multipath overlap network is mainly studied. It is a typical overlapping network technology to realize data transmission and forward processing in application layer, which is based on overlapping network to realize multipath transmission. In fact, it reduces the technical threshold for multipath transmission applications. The establishment of multipath transmission conditions is only the basis of multipath transmission. The performance and efficiency of multipath transmission depend more on multipath transmission control mechanisms and protocols, especially for service experience quality oriented multipath transmission. It is necessary to consider various factors such as traffic requirements and dynamic changes of path QoS conditions, while maintaining the time series relationship between transport packets. The transmission control mechanism needs to balance the relationship between transmission efficiency and reliability, and the basic goal is to meet the user's service experience quality (QoE). In this paper, the existing multipath transmission protocols are summarized and analyzed. Combined with the characteristics of relay paths in overlapping networks and the requirements of real-time media traffic, the related multipath transmission control mechanisms and sub-stream reconfiguration methods are studied in depth. The main work and achievements are as follows: 1) the multipath transmission control mechanism based on weight calculation is proposed, and two multipath load allocation algorithms are designed. According to the characteristics of data traffic and path state, the transmission capacity of each path is evaluated synthetically. According to the optimal prediction result of QoE, the weight of each path is determined, and the load is distributed according to the weight. 2) the multipath transmission control mechanism based on QoS feedback is designed, and the token bucket is set at the sending end. The load selects the corresponding path according to the instruction in the token bucket for transmission, sets feedback "reply message" at the receiving end, and the sending side judges the current status of each path by receiving the "reply message". This determines the next path token instruction setting. On the basis of this, it is also proposed to combine the two mechanisms effectively, that is, to add a load allocation algorithm to the multipath transmission control mechanism based on QoS feedback, and at the same time, according to the transmission state feedback of each path at the receiving end. Dynamic adjustment of load allocation strategy. 3) A dynamic buffer based substream recombination mechanism is proposed, and the corresponding recombination method is designed. The buffer is set at the receiving end, the packets transmitted by each sub-stream are sorted, and then transferred to the data processor, so as to reduce the effect of delay jitter. The buffer size is dynamically adjusted according to the parameters such as packet loss rate and delay. Finally, through network simulation experiments, it is verified that the proposed multi-path transmission control mechanism for service experience quality is reasonable, and the load allocation algorithm is feasible and can realize the multi-path transmission control of data services.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN919.3

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李開新;;一種3G業(yè)務(wù)體驗(yàn)設(shè)計(jì)實(shí)施實(shí)務(wù)模型的構(gòu)建[J];山東通信技術(shù);2010年02期

2 徐炳林;;IPTV over IMS離我們有多遠(yuǎn)[J];電信網(wǎng)技術(shù);2008年02期

3 高明亮;;特色服務(wù):便民箱、現(xiàn)場(chǎng)自助業(yè)務(wù)辦理、新業(yè)務(wù)體驗(yàn)[J];通信世界;2007年09期

4 徐超;;面臨“真實(shí)路考” TD手機(jī)一年跨越“青澀期”[J];通信世界;2007年32期

5 章堅(jiān);強(qiáng)宇紅;;VoLTE打造“世界好聲音”[J];通信世界;2013年13期

6 胡楊;;CI導(dǎo)入與3G“業(yè)務(wù)體驗(yàn)”[J];信息網(wǎng)絡(luò);2010年Z1期

7 李新苗;;TD“三不”原則下的計(jì)費(fèi)創(chuàng)新[J];通信世界;2010年13期

8 張鵬;;IT支撐:全力鎖定企業(yè)客戶[J];通信世界;2010年48期

9 ;“仿真用戶行為,評(píng)估業(yè)務(wù)體驗(yàn)”——中創(chuàng)信測(cè)IMS“全面測(cè)試”方案[J];通信世界;2007年12期

10 張鵬;;把脈云化 IDC的技術(shù)關(guān)鍵點(diǎn)[J];通信世界;2013年34期

相關(guān)會(huì)議論文 前1條

1 楊彥超;初春;;構(gòu)建安全的自動(dòng)化批量充值平臺(tái)[A];第九屆中國通信學(xué)會(huì)學(xué)術(shù)年會(huì)論文集[C];2012年

相關(guān)重要報(bào)紙文章 前10條

1 劉詩薇 通訊員　 李元青;黑龍江移動(dòng)開展新業(yè)務(wù)體驗(yàn)活動(dòng)[N];人民郵電;2006年

2 高飛;安徽移動(dòng)“業(yè)務(wù)體驗(yàn)”提高員工素質(zhì)[N];人民郵電;2006年

3 馬斌;業(yè)務(wù)體驗(yàn),讓展會(huì)充滿魅力[N];人民郵電;2007年

4 記者 歐燕燕;中移動(dòng)4G業(yè)務(wù)體驗(yàn)“驚艷”博鰲[N];人民郵電;2013年

5 記者 荊小洪　通訊員 馮冠宇;谷春立副省長(zhǎng)參加吉林移動(dòng)4G業(yè)務(wù)體驗(yàn)[N];人民郵電;2014年

6 ;通信業(yè)務(wù)體驗(yàn)為先[N];通信產(chǎn)業(yè)報(bào);2004年

7 記者 郎曉黎;全國人大代表、南京郵電大學(xué)校長(zhǎng)楊震：發(fā)展3G豐富業(yè)務(wù)是前提[N];通信產(chǎn)業(yè)報(bào);2009年

8 中興通訊 關(guān)濤　曾志;提升HTTP業(yè)務(wù)體驗(yàn)[N];通信產(chǎn)業(yè)報(bào);2012年

9 記者 陶軼;廣東移動(dòng)幫扶大學(xué)生就業(yè)創(chuàng)業(yè)[N];人民郵電;2013年

10 通訊員 俞健 記者 顧瑾;浙江電信開展新業(yè)務(wù)體驗(yàn)活動(dòng)[N];人民郵電;2005年

相關(guān)博士學(xué)位論文 前1條

1 劉蓓;基于業(yè)務(wù)體驗(yàn)的無線資源管理策略研究[D];中國科學(xué)技術(shù)大學(xué);2012年

相關(guān)碩士學(xué)位論文 前3條

1 張煒;面向業(yè)務(wù)體驗(yàn)質(zhì)量的多徑中繼傳輸控制方法研究[D];東北大學(xué);2014年

2 秦厚軍;南京聯(lián)通3G業(yè)務(wù)體驗(yàn)營銷策略研究[D];華中科技大學(xué);2012年

3 王爍;規(guī)模運(yùn)營的IPTV業(yè)務(wù)體驗(yàn)質(zhì)量研究與優(yōu)化[D];華南理工大學(xué);2009年

，

本文編號(hào)：2309079