本文選題：容忍延遲網(wǎng)絡(luò) + 社會(huì)網(wǎng)絡(luò)��； 參考：《北京郵電大學(xué)》2014年博士論文

【摘要】：隨著無線通信需求的增加,無線網(wǎng)絡(luò)逐漸延伸到拓?fù)涓嘧�、信道更惡劣的�?yīng)用環(huán)境中,如星際通信、野生動(dòng)物監(jiān)控、移動(dòng)社交和災(zāi)難救助等。這些應(yīng)用場合的共同特點(diǎn)是：節(jié)點(diǎn)間的穩(wěn)定通信不能夠得到保證,源宿之間的端到端路徑不復(fù)存在。容忍延遲網(wǎng)絡(luò),即容遲網(wǎng)絡(luò),作為應(yīng)對(duì)此類環(huán)境的最佳解決方案,犧牲時(shí)延與緩存空間換取數(shù)據(jù)的成功投遞,利用節(jié)點(diǎn)有規(guī)律的移動(dòng)、借助“存儲(chǔ)—攜帶—轉(zhuǎn)發(fā)”的通信方式變天塹為通途。 近幾年來,相關(guān)交叉學(xué)科的發(fā)展將容忍延遲網(wǎng)絡(luò)關(guān)鍵技術(shù)的研究推向了新的階段。網(wǎng)絡(luò)的泛在化與信息采集技術(shù)的普及讓研究者意識(shí)到,通信節(jié)點(diǎn)往往附著在具有自我意識(shí)的個(gè)體之上,其移動(dòng)呈現(xiàn)出復(fù)雜的統(tǒng)計(jì)規(guī)律；復(fù)雜網(wǎng)絡(luò)與社交網(wǎng)絡(luò)的發(fā)展讓研究者從全新的角度審視個(gè)體間的社會(huì)關(guān)系對(duì)網(wǎng)絡(luò)性能的影響；數(shù)據(jù)挖掘與語義網(wǎng)的興起揭示了比特?cái)?shù)據(jù)的內(nèi)容屬性,讓研究者從更高的維度來看待信息的傳遞過程。隨著以上新特性的引入,具有社會(huì)網(wǎng)絡(luò)屬性的容遲網(wǎng)絡(luò)成為研究的熱點(diǎn)與難點(diǎn)。 在具有社會(huì)網(wǎng)絡(luò)屬性的容遲網(wǎng)絡(luò)中,個(gè)體對(duì)地點(diǎn)的偏好、個(gè)體之間的社會(huì)關(guān)系、群組與社區(qū)、個(gè)體對(duì)數(shù)據(jù)內(nèi)容的偏好等因素都可以看作是社會(huì)屬性的體現(xiàn),本文立足于研究社會(huì)屬性的引入對(duì)傳統(tǒng)容遲網(wǎng)絡(luò)的影響,將社會(huì)屬性歸納為：移動(dòng)模型的社會(huì)性、網(wǎng)絡(luò)拓?fù)涞漠悩?gòu)性、傳輸數(shù)據(jù)的內(nèi)容性和節(jié)點(diǎn)轉(zhuǎn)發(fā)的自私性,從四個(gè)不同的側(cè)面對(duì)容遲網(wǎng)絡(luò)的關(guān)鍵技術(shù)展開研究。 在移動(dòng)模型的社會(huì)性方面,本文從進(jìn)化的角度深入研究節(jié)點(diǎn)移動(dòng)產(chǎn)生復(fù)雜規(guī)律的原因,將節(jié)點(diǎn)移動(dòng)的動(dòng)力和阻力分別建模為社會(huì)收益與移動(dòng)開銷,將收益開銷比作為衡量個(gè)體適應(yīng)環(huán)境能力的準(zhǔn)則,使復(fù)雜的社會(huì)行為在進(jìn)化過程中涌現(xiàn)出來。本文提出了基于遺傳算法的移動(dòng)模型GAMM,通過分析生成場景的空時(shí)規(guī)律,證明了個(gè)體朝著收益開銷比最大化方向進(jìn)化的過程是熵減過程,其統(tǒng)計(jì)規(guī)律符合真實(shí)場景的空時(shí)分布規(guī)律。此外,本文還通過社區(qū)模型、探索者模型和交通工具模型驗(yàn)證了移動(dòng)模型的可擴(kuò)展性,為后文的研究打下了基礎(chǔ)。 在網(wǎng)絡(luò)拓?fù)涞漠悩?gòu)性方面,本文首先從理論的角度研究高級(jí)節(jié)點(diǎn)的引入對(duì)同構(gòu)容遲網(wǎng)絡(luò)性能的影響,將消息傳播的過程模擬為傳染病擴(kuò)散的過程,利用復(fù)雜網(wǎng)絡(luò)中的傳染病模型得到不同路由機(jī)制下性能指標(biāo)的閉式表達(dá),并將模型擴(kuò)展到異構(gòu)場景,分析不同路由機(jī)制對(duì)信息站系統(tǒng)的適應(yīng)能力。本文提出了具有高兼容性的容遲網(wǎng)絡(luò)信息站架構(gòu),將傳統(tǒng)的路由策略擴(kuò)展為支持信息站的路由機(jī)制,并配合以相應(yīng)的緩存控制機(jī)制,旨在發(fā)現(xiàn)并充分利用信息站的高容量緩存和信息站之間的高速鏈路。此外借助信息站高速的信息擴(kuò)散能力,設(shè)計(jì)了抑制冗余消息的副本控制策略,并從理論分析和仿真測試兩個(gè)方面證明了信息站系統(tǒng)與改進(jìn)機(jī)制的有效性。 在傳輸數(shù)據(jù)的內(nèi)容性方面,本文重點(diǎn)研究如何利用數(shù)據(jù)的內(nèi)容屬性從宏觀的角度控制消息的轉(zhuǎn)發(fā)過程,提出了以內(nèi)容為中心的容遲網(wǎng)絡(luò)架構(gòu)CCDTN。該架構(gòu)融合了下一代網(wǎng)絡(luò)技術(shù)中的以信息為中心網(wǎng)絡(luò)架構(gòu)和容遲網(wǎng)絡(luò)自身的特點(diǎn),用描述矢量將地理位置、用戶喜好和數(shù)據(jù)內(nèi)容三者的社會(huì)屬性緊密地聯(lián)系在一起,應(yīng)用層支持社交網(wǎng)絡(luò)中文件分享、發(fā)布訂閱等新型業(yè)務(wù),并預(yù)留了豐富的社會(huì)網(wǎng)絡(luò)屬性感知接口以提高架構(gòu)的可擴(kuò)展性�；贑CDTN架構(gòu),本文引入節(jié)點(diǎn)的親密度、消息的相似度、節(jié)點(diǎn)對(duì)消息的關(guān)注度等概念,綜合利用容遲網(wǎng)絡(luò)的社會(huì)屬性提高路由機(jī)制的性能。 節(jié)點(diǎn)轉(zhuǎn)發(fā)的自私性是將社會(huì)屬性引入容遲網(wǎng)絡(luò)而產(chǎn)生的副作用,本文發(fā)現(xiàn)由于個(gè)體對(duì)地點(diǎn)和數(shù)據(jù)內(nèi)容的偏好,加上緩存空間的限制,容遲網(wǎng)絡(luò)中的自私行為呈現(xiàn)出內(nèi)容選擇性。本文借助理論模型分析了內(nèi)容選擇性自私行為產(chǎn)生的原因,并從緩存控制的角度給出了解決方案,提出了互補(bǔ)消息補(bǔ)位的優(yōu)先級(jí)排隊(duì)策略CCDTN-SR,提高了內(nèi)容轉(zhuǎn)發(fā)的公平性。本文通過仿真的手段分析了CCDTN網(wǎng)絡(luò)架構(gòu)的性能,以及不同路由機(jī)制對(duì)該架構(gòu)和新型業(yè)務(wù)的適應(yīng)能力,并驗(yàn)證了自私行為抑制機(jī)制的有效性。
[Abstract]:As the demand for wireless communication is increasing, the wireless network has gradually extended to more topology changes, such as interstellar communication, wildlife monitoring, mobile social networking and disaster relief in worse channel applications. The common features of these applications are that the stable communication between nodes can not be guaranteed and the end to end path between the source and the host is gone. There is a delay network, that is, the delay network, as the best solution to this environment, sacrificing the time delay and the cache space for the successful delivery of the data, using the regular movement of the node, and using the "storage - carry - forward" communication mode to change the road.
In recent years, the development of interrelated disciplines has pushed the research on the key technologies of tolerance delayed networks to a new stage. The ubiquitous and information acquisition technology of the network makes researchers realize that communication nodes are often attached to individuals with self-consciousness, and their movement presents complex statistical laws; complex networks and social networks The development of the network allows researchers to examine the impact of social relationships among individuals from a new perspective. The rise of data mining and semantic networks reveals the content attributes of bit data and lets researchers look at the transmission process of information from a higher dimension. With the introduction of the new characteristics above, the capacity of the social network is delayed. The network has become a hot and difficult point in the research.
In the late network with social network attributes, the preference of the individual to the place, the social relationship between individuals, the groups and communities, and the preference of the individual to the data content can be regarded as the embodiment of the social attributes. This article is based on the study of the influence of the introduction of social attributes on the traditional late network, and the social attributes are summarized as: The sociality of the dynamic model, the heterogeneity of the network topology, the content of the data transmission and the selfishness of the node forwarding are studied from four different sides to the key technologies of the delayed network.
In the sociality of the mobile model, this paper studies the reasons for the complex rules of node movement from the evolutionary point of view, modeling the dynamic and resistance of the mobile node as the social income and the moving overhead, and taking the income ratio as the criterion to measure the ability of the individual to adapt to the environment, so that the complex social behavior emerges in the evolutionary process. In this paper, a mobile model GAMM based on genetic algorithm is proposed. By analyzing the space-time law of generating the scene, it is proved that the process that the individual evolves in the direction of maximizing the revenue cost is entropy reduction, and the statistical rules conform to the space time distribution law of the real scene. In addition, this article also uses the community model, the Explorer model and the traffic worker. The model verifies the scalability of the mobile model, which lays the foundation for further research.
In the aspect of the heterogeneity of network topology, this paper first studies the influence of the introduction of advanced nodes on the performance of isomorphic delayed network from the theoretical point of view. The process of message propagation is simulated as the process of infectious disease diffusion, and a closed expression of performance indexes under different routing mechanisms is obtained by using the infectious disease model in the complex network, and the model is extended. In this paper, the adaptability of different routing mechanisms to the information station system is analyzed. In this paper, a high compatibility delay tolerant network information station architecture is proposed. The traditional routing strategy is extended to support the routing mechanism of the information station, and the corresponding caching mechanism is used to find and make full use of the high capacity cache of the information station. The high speed link between information stations. In addition, with the help of information station's high speed information diffusion ability, a replica control strategy for suppressing redundant messages is designed, and the effectiveness of the information station system and the improved mechanism is proved from two aspects of theoretical analysis and simulation test.
In terms of the content of data transmission, this paper focuses on how to use the content attributes of the data to control the forwarding process from the macro point of view, and proposes a content centric late network architecture CCDTN. which combines the features of the information centric network architecture and the capacity of the late network in the next generation network technology. Vector is closely linked to the social attributes of geographical location, user preferences and data content three. Application layer supports file sharing, publishing and subscriptions and other new services in social networks, and has reserved a rich social network attribute perception interface to improve the scalability of the architecture. Based on the CCDTN architecture, this paper introduces the degree of intimacy of nodes. The concept of similarity of messages, degree of concern of nodes to messages, and so on, comprehensively utilize the social attributes of Delay Tolerant Networks to improve the performance of routing mechanisms.
The selfishness of node forwarding is the side effect of introducing social attributes into the delayed network. This paper finds that the selfish behavior in the late network presents a content selectivity due to the preference of the individual to the location and data content and the restriction of the cache space, and the reasons for the selective selfish behavior of the content are analyzed by the theoretical model. The solution is given from the perspective of caching control, and the priority queuing strategy of complementary message complementarity is proposed, CCDTN-SR, which improves the fairness of content forwarding. This paper analyzes the performance of the CCDTN network architecture by means of simulation, and the adaptability of different routing mechanisms to the architecture and new type of services, and verifies the selfish behavior. The effectiveness of the inhibition mechanism.

【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN929.5

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