【摘要】：3GPP在R5版本中引入的多媒體通信標(biāo)準(zhǔn)體系IMS,是下一代電信技術(shù)的主要網(wǎng)絡(luò)架構(gòu),然而IMS媒體傳輸模式采用完全依賴承載網(wǎng)絡(luò)的單徑傳輸模式,存在著端到端QoS保證困難、傳輸效率低等問題,已嚴(yán)重制約了IMS業(yè)務(wù)發(fā)展。面向重疊網(wǎng)絡(luò)的多徑傳輸,被認(rèn)為是實(shí)現(xiàn)IMS媒體傳輸技術(shù)升級(jí)的重要方式。為實(shí)現(xiàn)QoS保證的多徑傳輸,為路徑選擇和負(fù)載動(dòng)態(tài)分配提供依據(jù),均需依賴于傳輸路徑QoS的測(cè)量和評(píng)價(jià)技術(shù)。面向重疊網(wǎng)絡(luò)多徑傳輸?shù)腝oS評(píng)價(jià),尚沒有完善的技術(shù)方案：目前的路徑QoS測(cè)量均是針對(duì)于端到端或某段鏈路的,無法適用于存在中繼節(jié)點(diǎn)的多徑傳輸路徑：傳統(tǒng)的預(yù)測(cè)估計(jì)方法雖然可以彌補(bǔ)測(cè)量的滯后性,但為保證不失真恢復(fù)的多次采樣會(huì)給網(wǎng)絡(luò)增加大量額外負(fù)擔(dān)；相關(guān)協(xié)議方面,目前主要是基于傳輸層協(xié)議或者ICMP協(xié)議等,RTCP協(xié)議為針對(duì)實(shí)時(shí)傳輸媒體路徑的QoS評(píng)價(jià),通過統(tǒng)計(jì)分析時(shí)延、帶寬、丟包率等內(nèi)容來進(jìn)行評(píng)價(jià),無法兼顧多徑傳輸中繼節(jié)點(diǎn)間的消息傳遞。結(jié)合本文基于應(yīng)用中繼的多徑傳輸場(chǎng)景,本文重點(diǎn)研究以下幾個(gè)方面：1)重疊網(wǎng)絡(luò)中繼節(jié)點(diǎn)及路徑的組織管理；2)中繼節(jié)點(diǎn)間路徑QoS測(cè)量-預(yù)測(cè)機(jī)制及協(xié)議；3)端到端傳輸路徑QoS評(píng)價(jià)協(xié)議。本文的主要研究?jī)?nèi)容及成果如下：1]分別對(duì)重疊網(wǎng)絡(luò)路徑和中繼節(jié)點(diǎn)進(jìn)行分類描述,進(jìn)而量化的表征了傳輸路徑選擇度的概念,為面向重疊網(wǎng)絡(luò)多徑傳輸?shù)穆窂焦芾砗吐窂絈oS評(píng)價(jià)提供依據(jù)；2)在總結(jié)傳統(tǒng)路徑QoS評(píng)價(jià)參數(shù)及其測(cè)量方法的基礎(chǔ)上,確定本文采用時(shí)延、可用帶寬作為表征路徑QoS的評(píng)價(jià)參數(shù),通過對(duì)現(xiàn)有測(cè)量方法的擴(kuò)展,設(shè)計(jì)出基于中繼控制器的中繼節(jié)點(diǎn)間路徑QoS測(cè)量機(jī)制及其交互消息格式；3)為彌補(bǔ)主動(dòng)測(cè)量方式的不足,通過深入分析傳統(tǒng)預(yù)測(cè)估計(jì)算法,設(shè)計(jì)出主要基于壓縮感知理論的路徑QoS預(yù)測(cè)模塊,并給出相應(yīng)的預(yù)測(cè)估計(jì)流程；4)通過對(duì)RTCP協(xié)議進(jìn)行擴(kuò)展,提出多徑接收端報(bào)告和多徑發(fā)送端報(bào)告,其為兩個(gè)攜帶了路徑ID等參數(shù)信息的新分組類型,并給出相應(yīng)的交互機(jī)制,實(shí)現(xiàn)端到端路徑的QoS評(píng)價(jià)。最后通過基于OMNeT++仿真平臺(tái)的仿真測(cè)試,驗(yàn)證本文提出的解決方案的普適性和準(zhǔn)確性,能夠應(yīng)用于面向重疊網(wǎng)絡(luò)的基于應(yīng)用中繼多徑傳輸路徑QoS的評(píng)價(jià)。
[Abstract]:The multimedia communication standard system (IMS) introduced by 3GPP in the R5 version is the main network architecture of the next generation telecommunication technology. However, the IMS media transmission mode adopts the single-path transmission mode which is completely dependent on the carrying network, so it is difficult to guarantee end-to-end QoS. Low transmission efficiency has seriously restricted the development of IMS services. Multi-path transmission for overlapping networks is considered to be an important way to upgrade IMS media transmission technology. In order to realize the multipath transmission guaranteed by QoS and to provide the basis for path selection and load dynamic distribution, it is necessary to rely on the measurement and evaluation technology of the transmission path QoS. There is no perfect technical scheme for QoS evaluation of multi-path transmission in overlapped networks: the current path QoS measurements are aimed at end-to-end or a certain link. It can not be applied to the multipath transmission path with relay node. Although the traditional predictive estimation method can make up for the lag of measurement, the multiple sampling to ensure non-distortion recovery will add a lot of additional burden to the network. At present, it is mainly based on the transport layer protocol or ICMP protocol as the QoS evaluation for real-time transmission media path, through statistical analysis of delay, bandwidth, packet loss rate and other content to evaluate. Unable to accommodate message passing between multipath transport relay nodes. Based on the multi-path transmission scenario of application relay, this paper focuses on the following aspects: 1) organizational management of overlapped network relay nodes and 2) QoS measurement and prediction mechanism and protocols between relay nodes; 3) end-to-end transmission path QoS evaluation protocol. The main research contents and results of this paper are as follows: 1. The overlapping network paths and relay nodes are classified and described respectively, and then the concept of transmission path selection is quantificationally represented. This paper provides a basis for path management and path QoS evaluation for multi-path transmission in overlapping networks. On the basis of summing up the traditional path QoS evaluation parameters and their measurement methods, it is determined that the time delay and available bandwidth are used as the evaluation parameters to characterize the path QoS in this paper. By extending the existing measurement methods, this paper designs a relay node path QoS measurement mechanism based on relay controller and its interactive message format 3) to make up for the deficiency of active measurement methods, through in-depth analysis of the traditional predictive estimation algorithm. A path QoS prediction module based on compression sensing theory is designed, and the corresponding prediction estimation flow is given. By extending the RTCP protocol, the multipath receiving end report and the multipath senders report are presented. It is a new grouping type with path ID and other parameter information, and the corresponding interaction mechanism is given to realize the QoS evaluation of end-to-end path. Finally, the simulation test based on OMNeT platform verifies the universality and accuracy of the proposed solution, and can be applied to the evaluation of QoS based on application relay multipath transmission path for overlapped networks.
【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)】：TN915.07

【相似文獻(xiàn)】

相關(guān)期刊論文 前8條

1 張巍;張麟兮;郭淑霞;劉寧;;數(shù)據(jù)鏈路多徑傳輸模型的物理映射方法研究[J];計(jì)算機(jī)仿真;2010年04期

2 袁林鋒;杜旭;楊宗凱;;基于決定性能量比例的多徑傳輸技術(shù)[J];計(jì)算機(jī)科學(xué);2006年04期

3 孫慧鋒;劉文芬;張建輝;;Round-Robin分配方式下多徑傳輸?shù)闹嘏判蛐阅芊治鯷J];電子與信息學(xué)報(bào);2011年08期

4 陽旺;李賀武;吳茜;吳建平;;基于最小反饋時(shí)延的多徑應(yīng)答路徑選擇算法[J];清華大學(xué)學(xué)報(bào)(自然科學(xué)版);2011年07期

5 樊邦奎;丁冠軍;蘭海濱;龍騰;王晶;陳志勇;;智能電網(wǎng)應(yīng)用中的PLC最短路徑及多徑傳輸統(tǒng)計(jì)模型[J];電工技術(shù)學(xué)報(bào);2013年S2期

6 孫慧鋒;劉文芬;張建輝;;多徑傳輸下的數(shù)據(jù)包重排序性能分析[J];信息工程大學(xué)學(xué)報(bào);2010年06期

7 徐祺瑞;尹福昌;;激光在水下多徑傳輸?shù)拿商乜_模擬[J];長(zhǎng)春理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2008年01期

8 ;[J];;年期

相關(guān)會(huì)議論文 前1條

1 李志偉;楊益新;;基于GCC的水聲信號(hào)多徑傳輸TOA估計(jì)仿真研究[A];中國(guó)聲學(xué)學(xué)會(huì)水聲學(xué)分會(huì)2013年全國(guó)水聲學(xué)學(xué)術(shù)會(huì)議論文集[C];2013年

相關(guān)碩士學(xué)位論文 前7條

1 楊樝;支持重疊網(wǎng)絡(luò)多徑傳輸?shù)脑u(píng)價(jià)模型和方法研究[D];東北大學(xué);2014年

2 莊林林;面向重疊網(wǎng)絡(luò)多徑傳輸?shù)穆窂焦芾砗驮u(píng)價(jià)技術(shù)研究[D];東北大學(xué);2014年

3 尚小東;支持實(shí)時(shí)媒體交換的多徑傳輸控制協(xié)議的研究[D];東北大學(xué);2012年

4 程浩;面向多徑傳輸?shù)膽?yīng)用層QoS評(píng)價(jià)模型和決策方法[D];東北大學(xué);2013年

5 馮雪;支持應(yīng)用層QoS決策的多徑傳輸路徑選擇方法研究[D];東北大學(xué);2013年

6 趙奇;向量網(wǎng)多徑傳輸算法研究和仿真實(shí)現(xiàn)[D];北京交通大學(xué);2012年

7 楊軍;Ad Hoc網(wǎng)絡(luò)視頻多描述編碼與多徑傳輸技術(shù)研究[D];蘇州大學(xué);2009年

，

本文編號(hào)：2166585