本文選題：泛在網(wǎng) + 多徑并行傳輸　； 參考：《華東理工大學(xué)》2014年博士論文

【摘要】：隨著泛在網(wǎng)絡(luò)由泛在互聯(lián)階段向泛在協(xié)同階段演進(jìn),網(wǎng)絡(luò)的異構(gòu)性及終端的多接入特性為終端在網(wǎng)絡(luò)重疊覆蓋區(qū)域通過多種接入方式并行傳輸提供了基礎(chǔ)及條件。多徑并行傳輸系統(tǒng),通過聚合多條鏈路的傳輸性能,可以有效提升網(wǎng)絡(luò)資源利用率,提高業(yè)務(wù)傳輸速率及負(fù)載均衡能力。另外,通過及時(shí)將傳輸中斷鏈路的數(shù)據(jù)遷移到其他并行鏈路可以有效提升網(wǎng)絡(luò)的魯棒性,保證數(shù)據(jù)可靠性。另一方面,當(dāng)單個終端的能力受限無法完成特定的功能需求時(shí),通過協(xié)同其周邊環(huán)境多個終端設(shè)備形成一個能力增強(qiáng)、接口增多的虛擬大終端,成為解決終端資源受限與用戶服務(wù)需求之間矛盾的突破口。 本文針對異構(gòu)網(wǎng)絡(luò)環(huán)境下多徑并行傳輸中的數(shù)據(jù)包亂序、網(wǎng)絡(luò)資源公平性分配、擁塞控制機(jī)制、多終端協(xié)同業(yè)務(wù)傳輸?shù)汝P(guān)鍵技術(shù)進(jìn)行了研究,提出了基于虛擬終端的多徑并行傳輸架構(gòu)及優(yōu)化方法、端到端多徑并行傳輸亂序分析模型、基于網(wǎng)絡(luò)效用的多用戶多終端多徑傳輸優(yōu)化模型等,并通過搭建實(shí)驗(yàn)平臺對以多終端協(xié)同為主要應(yīng)用場景的異構(gòu)終端設(shè)備及服務(wù)互發(fā)現(xiàn)、協(xié)作網(wǎng)絡(luò)搭建及維護(hù)以及應(yīng)用層實(shí)現(xiàn)的多流業(yè)務(wù)并發(fā)傳輸?shù)汝P(guān)鍵技術(shù)進(jìn)行了驗(yàn)證。主要研究工作包括以下幾點(diǎn)： 1.針對多徑并行傳輸中影響傳輸性能的數(shù)據(jù)包亂序問題,通過多組仿真實(shí)驗(yàn)對多組場景的多個影響因素進(jìn)行了分析。對多徑并行傳輸中的數(shù)據(jù)包亂序產(chǎn)生原因、影響因素以及對系統(tǒng)造成的危害進(jìn)行了系統(tǒng)的分析。基于以上分析,提出了基于累加概率分布的端到端數(shù)據(jù)包亂序分析模型,通過該模型可以很好的模擬真實(shí)網(wǎng)絡(luò)環(huán)境的亂序情況,利用模型分析結(jié)果提出了解決數(shù)據(jù)包亂序的多種方法。最后,基于該模型通過最小化重排序時(shí)間獲取多徑傳輸系統(tǒng)最優(yōu)吞吐的優(yōu)化分析模型。 2.為解決多徑并行傳輸中所面臨的瓶頸鏈路公平性問題,本文對多路徑擁塞控制的設(shè)計(jì)原則進(jìn)行分析,根據(jù)設(shè)計(jì)原則要求討論現(xiàn)有多路徑擁塞控制算法的性能,提出多路徑傳輸擁塞控制算法設(shè)計(jì)原則,在保證網(wǎng)絡(luò)資源公平的前提下,提升系統(tǒng)的整體性能,實(shí)現(xiàn)多路徑傳輸效率的最大化。根據(jù)多用戶多終端多路徑傳輸特點(diǎn),設(shè)計(jì)網(wǎng)絡(luò)效用最優(yōu)化的傳輸控制模型,通過設(shè)計(jì)分布式算法求解模型最優(yōu)解,并驗(yàn)證了系統(tǒng)的穩(wěn)定性。 3.為解決單個終端在資源及能力上的不足,提出一種基于多終端協(xié)同的虛擬終端系統(tǒng),基于該系統(tǒng)研究聚合終端的多路徑并發(fā)傳輸控制。針對虛擬終端系統(tǒng)中如何實(shí)現(xiàn)多徑并行傳輸過程中的業(yè)務(wù)流控制問題,利用排隊(duì)論等理論工具建模該系統(tǒng)并通過優(yōu)化分析給出不同業(yè)務(wù)類型需求下的分流控制解決方案,提升系統(tǒng)的傳輸性能。 4.在上述研究的基礎(chǔ)上,本文搭建多終端協(xié)同及多流并發(fā)傳輸關(guān)鍵技術(shù)驗(yàn)證演示平臺,分別對異構(gòu)網(wǎng)絡(luò)融合、基于Wi-Fi通信協(xié)議自主服務(wù)發(fā)現(xiàn)及組網(wǎng)和應(yīng)用層實(shí)現(xiàn)的多流并發(fā)傳輸控制方法進(jìn)行研究,通過對典型應(yīng)用場景的分析為相關(guān)技術(shù)的推廣及應(yīng)用提供可行的解決方案,并對本文研究的典型關(guān)鍵技術(shù)進(jìn)行可行性驗(yàn)證和性能評估。 以上研究成果,對異構(gòu)網(wǎng)絡(luò)環(huán)境中多終端協(xié)同及多路徑并行傳輸系統(tǒng)在建模、架構(gòu)、協(xié)議設(shè)計(jì)和實(shí)際應(yīng)用方面奠定了重要基礎(chǔ),為泛在網(wǎng)絡(luò)環(huán)境下的協(xié)同智能類應(yīng)用的實(shí)施提供了理論支撐。
[Abstract]:The multi - path parallel transmission system can effectively improve the network resource utilization rate and improve the service transmission rate and the load balancing ability by aggregating the transmission performance of a plurality of links .

This paper studies the key technologies of multi - path parallel transmission architecture and optimization method based on virtual terminal , multi - user multi - terminal multi - path transmission optimization model based on virtual terminal , multi - user multi - terminal multi - path transmission optimization model based on virtual terminal , multi - user multi - terminal multi - path transmission optimization model based on network utility , etc .

1 . Based on the above analysis , this paper presents an analysis of several factors affecting transmission performance in multi - path parallel transmission . Based on the above analysis , a sequence analysis model of end - to - end data packet based on accumulation probability distribution is presented . Based on the above analysis , several methods are proposed to solve the disorder of the real network environment . Finally , the optimization model of optimal throughput of multi - path transmission system is obtained based on the model by minimizing the reordering time .

2 . In order to solve the bottleneck link fairness problem faced in multi - path parallel transmission , this paper analyzes the design principle of multi - path congestion control , discusses the performance of the existing multi - path congestion control algorithm according to the design principle , proposes the design principle of multi - path transmission congestion control algorithm , and improves the overall performance of the system under the premise of guaranteeing the fairness of network resources .

3 . In order to solve the shortage of resources and capability of a single terminal , a multi - terminal cooperative virtual terminal system is proposed . Based on the system , the multi - path concurrent transmission control of the aggregation terminal is studied . In view of how to realize the traffic flow control problem in the multi - path parallel transmission process in the virtual terminal system , the system is modeled by using the theory tools such as queuing theory and the shunt control solution under different service types needs to be given through optimization analysis , and the transmission performance of the system is improved .

4 . Based on the above research , this paper sets up a demonstration platform for the key technology of multi - terminal coordination and multi - stream concurrent transmission , and studies the multi - stream concurrent transmission control method realized by heterogeneous network convergence , self - service discovery based on Wi - Fi communication protocol , networking and application layer , and provides a feasible solution for the popularization and application of the related technologies by analyzing typical application scenarios , and feasibility verification and performance evaluation are carried out for typical key technologies in this paper .

The results show that the multi - terminal coordination and multi - path parallel transmission system in the heterogeneous network environment lays an important foundation for modeling , architecture , protocol design and practical application , and provides theoretical support for the implementation of the cooperative intelligent class application under the network environment .
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TP393.06

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