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基于多路徑的魯棒網(wǎng)絡(luò)通信方法

發(fā)布時間:2018-01-09 03:20

  本文關(guān)鍵詞:基于多路徑的魯棒網(wǎng)絡(luò)通信方法 出處:《北京交通大學(xué)》2017年碩士論文 論文類型:學(xué)位論文


  更多相關(guān)文章: SCTP 向量網(wǎng) 多路徑 向量地址 單點故障


【摘要】:當前的網(wǎng)絡(luò)應(yīng)用主要是基于UDP和TCP協(xié)議進行通信,在某些場景下,傳統(tǒng)的TCP/IP傳輸網(wǎng)絡(luò)已經(jīng)不能完全滿足網(wǎng)絡(luò)服務(wù)質(zhì)量要求,因此有必要開發(fā)一種新的機制,使得用戶能夠在不同網(wǎng)絡(luò)環(huán)境下充分利用網(wǎng)絡(luò)資源并且提高網(wǎng)絡(luò)性能。流控制傳輸協(xié)議(SCTP)的提出為我們提供了改善網(wǎng)絡(luò)性能的新方法。SCTP繼承了 TCP/UDP以及各種主流改進協(xié)議版本的所有功能,并彌補了它們的一些不足。SCTP主要的特點之一是具有多宿主特性,允許關(guān)聯(lián)的網(wǎng)絡(luò)端口綁定多個網(wǎng)絡(luò)地址,這種綁定允許數(shù)據(jù)通過不同路徑從發(fā)送端發(fā)送到接收端。由于SCTP具有多宿主特性,從而使得SCTP傳輸網(wǎng)絡(luò)能夠通過有效的故障路徑切換機制來提高網(wǎng)絡(luò)的魯棒性。由于SCTP相比TCP具有許多新的特性,使用SCTP取代TCP來承載網(wǎng)絡(luò)的端到端傳輸業(yè)務(wù)已經(jīng)成為眾多科研工作者的研究熱點。SCTP主要是基于IP網(wǎng)絡(luò),其多宿主特性也依賴于多個IP地址。但是IP網(wǎng)絡(luò)本身是一種單路徑網(wǎng)絡(luò),它所能提供的多路徑通信效果有限,從而使得IP網(wǎng)絡(luò)環(huán)境下的SCTP協(xié)議的性能受到限制。向量網(wǎng)絡(luò)VN是一種新型的數(shù)據(jù)通信網(wǎng)絡(luò),它采用向量地址,該協(xié)議對應(yīng)于OSI模型的第三層,即網(wǎng)絡(luò)層。向量網(wǎng)絡(luò)使用一種被稱為向量地址的新的交換方式,向量網(wǎng)提出了"向量連接"和"向量交換"兩個概念,并且基于向量地址根據(jù)網(wǎng)絡(luò)的社會屬性來設(shè)計網(wǎng)絡(luò)。向量網(wǎng)絡(luò)具有分形結(jié)構(gòu)的特點,并且交換地址和標識地址分離開來。理論上,與ATM網(wǎng)絡(luò)、IP網(wǎng)絡(luò)相比,向量網(wǎng)具有良好的安全性、保證Qos、地址無限擴展、交換設(shè)備簡單、網(wǎng)絡(luò)可操作性等優(yōu)點。向量網(wǎng)絡(luò)安全、可靠、可控制,并且保證網(wǎng)絡(luò)Qos承載和業(yè)務(wù)獨立,它是在研究下一代網(wǎng)絡(luò)背景下產(chǎn)生的一種全新的網(wǎng)絡(luò)體系。相比IP網(wǎng)絡(luò),向量網(wǎng)具有的多路徑特性決定了其能更好的支持多路徑傳輸。向量網(wǎng)絡(luò)是一種新型的網(wǎng)絡(luò),它不同于目前的IP網(wǎng)絡(luò)和其他類型的網(wǎng)絡(luò)。向量網(wǎng)絡(luò)具有許多不同的優(yōu)點,這得益于它使用被稱為向量地址的特殊交換方式。與IP網(wǎng)絡(luò)相比,向量網(wǎng)更多的是面向有連接服務(wù)。因為向量網(wǎng)是有連接網(wǎng)絡(luò),所以能夠保證Qos。向量網(wǎng)具有無限多址性、良好的安全性、輕連接等眾多優(yōu)點,本文中,我們改進了向量網(wǎng)環(huán)境下SCTP多路徑傳輸對單點故障的抵抗性能。VN(向量網(wǎng)絡(luò))對應(yīng)于OSI模型的第三層網(wǎng)絡(luò)層,它屬于信息網(wǎng)絡(luò)中低層的數(shù)據(jù)通信網(wǎng)絡(luò),并不包括高層的應(yīng)用程序的網(wǎng)絡(luò)內(nèi)容。借助于向量網(wǎng)絡(luò)的地址編碼方法和數(shù)據(jù)通信方法建立向量連接,設(shè)計基于向量地址的分形結(jié)構(gòu)的新的網(wǎng)絡(luò)通信技術(shù)。向量網(wǎng)提出向量連接和向量切換的概念,基于向量地址,根據(jù)網(wǎng)絡(luò)的社會屬性設(shè)計網(wǎng)絡(luò)。向量網(wǎng)具有分形體系結(jié)構(gòu),還具有交換地址與標識地址相分離的特點。向量網(wǎng)使用一種被稱為向量地址的方式進行地址交換,向量地址具有無限多值性、不可解讀、可加密、相對地址、有效性、地址長度不定和包含路由信息等諸多優(yōu)點。因此,在數(shù)據(jù)傳輸方面,與IP網(wǎng)絡(luò)和ATM網(wǎng)絡(luò)等主流網(wǎng)絡(luò)相比,向量網(wǎng)具有以下優(yōu)點:安全性更高、網(wǎng)絡(luò)簡單、適應(yīng)性強、效率更高。向量網(wǎng)的網(wǎng)絡(luò)地址是按照數(shù)據(jù)面和控制面相分離的原則來設(shè)計的,數(shù)據(jù)的交換依據(jù)數(shù)據(jù)面的網(wǎng)絡(luò)地址來完成,而網(wǎng)絡(luò)中各個節(jié)點的標識則通過控制面的網(wǎng)絡(luò)地址來實現(xiàn)。數(shù)據(jù)面的網(wǎng)絡(luò)地址是用二進制形式來表示的向量地址;控制面的網(wǎng)絡(luò)地址被設(shè)計為字符串形式的地址,類似于Internet網(wǎng)域名樹。為滿足向量網(wǎng)的設(shè)計需求,這兩種網(wǎng)絡(luò)地址都是具有分形特征的。向量地址是一種承載交換路由信息、長度可變的網(wǎng)絡(luò)地址。向量地址是相對地址,不能說"某個目的設(shè)備的向量地址是多少",而只能說"從某個源端設(shè)備到目的設(shè)備的向量地址是多少"。換句話說,在向量網(wǎng)絡(luò)地址編碼情況下,目的設(shè)備是由源端設(shè)備和向量地址這兩個因素決定的,地址給定,再給定源端設(shè)備,目的設(shè)備才能確定。一個向量地址如果沒有源端設(shè)備作為參考,它就不能尋址找到目的設(shè)備,沒有意義。源端設(shè)備向目的設(shè)備發(fā)送數(shù)據(jù)時,在數(shù)據(jù)中只要包含向量地址信息即可,不需要包含信源設(shè)備名稱,源端設(shè)備名稱信息隱含確定,就是數(shù)據(jù)的發(fā)送者,不需要給定。本文分析了向量網(wǎng)絡(luò)的特點,介紹了研究建立全球網(wǎng)絡(luò)的向量網(wǎng)平均地址長度的相關(guān)復(fù)雜網(wǎng)絡(luò)理論和理論分析方法。通過進行實際網(wǎng)絡(luò)拓撲模型仿真實驗,向量網(wǎng)絡(luò)得到驗證。結(jié)果表明,相比于目前的IP網(wǎng)絡(luò)等主流網(wǎng)絡(luò),向量網(wǎng)絡(luò)不僅更加單、更安全、更具可擴展性,而且還可以容納更多的用戶。本文介紹了向量網(wǎng)的相關(guān)理論架構(gòu),包括向量網(wǎng)的地址編碼方式、向量包格式定義、向量交換方法、向量網(wǎng)的數(shù)據(jù)面以及向量連接的建立,分析了向量網(wǎng)的特點?傊,無論是從設(shè)計思想、傳輸方式,還是網(wǎng)絡(luò)的Qos、安全性能方面,向量網(wǎng)與現(xiàn)有的網(wǎng)絡(luò)體系相比都有著根本的區(qū)別。本文分析了 SCTP協(xié)議的架構(gòu)、特性,介紹了當前IP網(wǎng)絡(luò)環(huán)境下的SCTP協(xié)議功能的不足之處。在此基礎(chǔ)上,結(jié)合向量網(wǎng)的無限多值性、安全性、輕連接等優(yōu)勢,提出了向量網(wǎng)支持的SCTP協(xié)議方法,設(shè)計了 SCTP/VN多路徑傳輸網(wǎng)絡(luò),并分析了基于向量網(wǎng)環(huán)境的SCTP多路徑在對抗單點故障的優(yōu)勢。不同于采用一條主路徑傳輸?shù)臉藴蔛CTP協(xié)議,本文基于向量地址的無限多值性提出了多路徑輪流掃描傳輸方法,該方法能夠快速有效的傳輸發(fā)送端的緩存數(shù)據(jù),為進一步提升多路徑傳輸網(wǎng)絡(luò)的 Qos,本文提出了增量路由以及改進的故障檢測和故障處理機制。在多路徑傳輸網(wǎng)絡(luò)中,某條路徑發(fā)生故障時,迅速切換其他路徑,其他路徑仍能保證數(shù)據(jù)的順利傳輸,并實現(xiàn)非常小的丟包,并不影響正常的網(wǎng)絡(luò)通信。若使用單路徑傳輸數(shù)據(jù),一旦發(fā)生故障,從故障發(fā)生到確認路徑故障這段時間內(nèi)發(fā)出的所有數(shù)據(jù)包均丟失,而且路徑的恢復(fù)往往需要較長時間,在實際語音通信中,當延遲大于500ms時通信即失敗。因此,相比于單條路徑傳輸數(shù)據(jù),多條路徑輪流傳輸?shù)姆绞娇梢允孤窂焦收显斐傻膩G包和延時大大降低,而且有利于網(wǎng)絡(luò)的擁塞控制,提高網(wǎng)絡(luò)資源的利用率,有效提高網(wǎng)絡(luò)的吞吐量。在本文中,我們?yōu)镾CTP多路徑傳輸功能設(shè)置了網(wǎng)絡(luò)仿真環(huán)境。我們建立了五條通信路徑。我們將它們從Path1命名為Path5。在第一步中,我們通過設(shè)置40毫秒的RTT(Round Time Trip)將數(shù)據(jù)發(fā)送到遠程計算機。當指定時間內(nèi)遠程計算機未收到數(shù)據(jù)包時,接收端檢測到故障,故障信息將返回發(fā)送端,發(fā)送端將確認故障路徑并切換到其他路徑。我們在C ++語言和Visual Studio環(huán)境的幫助下進行了實驗。仿真實驗表明,所提出的方法可以減少由于通信路徑和故障區(qū)域引起的誤差。這種方法還可以幫助減少通信延遲并且可以在一定程度上提高。該方法還提高了通信網(wǎng)絡(luò)的傳輸功率。
[Abstract]:The network application is mainly based on the TCP protocol and UDP communication, in certain scenarios, the traditional TCP/IP transmission network has been unable to fully meet the requirement of quality of service, it is necessary to develop a new mechanism, so that the user can in different network environment and make full use of cyber source and improve the network performance. The stream control transmission protocol (SCTP) all the features of the.SCTP provides a new method to improve the network performance as we inherit TCP/UDP and various mainstream version of the improved protocol, and make up for their shortcomings of.SCTP one of the main features of multi host characteristics, allowing the associated network port binding multiple network address, this bound allows the data received from the end of the sender to send through different paths. Because SCTP has many characteristics so that the host, SCTP transmission network can effectively through the fault path Path switching mechanism to improve the robustness of the network. Because SCTP has many new features compared to TCP, using SCTP to replace TCP to carry the end-to-end transmission network has become a research hotspot of.SCTP many research workers is mainly based on the IP network, the host properties also depend on more than one IP address. But the IP network itself is a single path network, multi path communication effect it can provide is limited, so that the performance of IP under the network environment, SCTP protocol is limited. Vector network VN is a data communication network model, it uses vector address, the protocol corresponding to the third layer in the OSI model, namely the network layer vector. The use of a network called vector address new switching mode, vector network proposed "vector connection" and "vector exchange" two concepts, and based on vector address according to the social attribute of network design to the network. The network has the characteristics of fractal structure, and the switching address and identification address separated. In theory, compared with ATM network, IP network, vector network has good safety, to ensure that the Qos address is unlimited, simple network switching equipment, maneuverability. Vector network security, reliable, and can be controlled. Ensure the Qos bearing network and business independently, it is a kind of new network system in next generation network research background. Compared with IP network, multi path feature vector network has decided its support to better multi path transmission. Vector network is a new network, it is different from the current IP network and other types of networks. The vector network has many different advantages, thanks to its use is called special switching vector address. Compared with IP network, vector network is more oriented to a connection service. Because vector A net is connected to the network, so it can guarantee the Qos. vector network has unlimited access, good safety, light connection and many other advantages, in this paper, we improved the.VN resistance performance of vector network environment SCTP multi path transmission on a single point of failure (vector network) corresponding to the third layer of the OSI model data communication network, which belongs to the low level of information network, the network did not include application level. The establishment of vector connection by vector network address encoding method and data communication method, the design of fractal vector address node network communication technology based on the new structure. The concept of vector network connection and vector vector switch. Based on vector address, according to the design of network social attribute of network. Vector network has fractal structure, also has the characteristics of switching address and address identification phase separation. Using a vector network called Vector address mode address exchange vector address with an infinite number of values, and can not be interpreted, encryption, relative address, address validity, indefinite length and contain routing information and many other advantages. Therefore, in terms of data transmission, compared with the IP network and ATM network and other mainstream network, vector network has the following advantages: high safety, simple network, strong adaptability and high efficiency. Vector network address is in accordance with the separation of data and control is the principle of design, data exchange based on the data of the network address to complete, and all nodes in the network identification through the control plane network address. The data of the network address is vector address in binary form to represent the control; network address is designed as a string in the form of address, similar to the Internet domain name of the tree. In order to meet the design requirements of vector network, the two The network address is fractal. Vector address is a bearing exchange routing information, variable length network address vector address is a relative address, not to say "what" is a vector address of the destination device, and can only say "from a source address vector end device to the destination device is much". In other words, in the vector network address encoding condition, destination is determined by two factors: the source end device and vector address, the address given, then given the source equipment, equipment can be determined. The purpose of a vector address if no source terminal equipment as a reference, it cannot find the purpose of addressing equipment, no the source of meaning. Terminal equipment to send data to the destination device, in the data only contains the vector address information can be, do not need to include the source device name, device name implied information source is determined, the sender of the data, Does not need to be given. This paper analyzes the characteristics of vector network, introduces the research of the average length of the address vector network global network related complex network theory and theory analysis method. Through the actual network topology model simulation, vector network is verified. The results show that, compared to the current mainstream network such as IP network, vector network not only more single, more secure, more scalable, but also can accommodate more users. This paper introduces the related theory of architecture of vector network, including address encoding method of vector network, vector package format, vector exchange method, and establish vector connection vector data network, analyzes the characteristics of vector network. In short, whether it is from the design, transmission, and network Qos, safety performance, vector network compared with the existing network system there is a fundamental difference between the analysis. The SCTP protocol architecture, characteristics, introduces the shortcomings of the current IP function under the network environment of SCTP protocol. On this basis, combined with the infinite value of vector network, safety, light connection and other advantages, the proposed SCTP protocol support vector network method, the design of SCTP/VN multi path transmission network, and analysis the vector network environment SCTP multi path based on a single point of failure in the fight against the advantage. Unlike using a main path transmission standard SCTP protocol, this paper addresses the infinite value vector of the multi paths by scanning transmission method based on the method to cache data transmitting end quickly and effectively, to further enhance the multi path transmission network Qos, this paper presents the fault detection and fault handling mechanism and improvement. The incremental routing in multi path transmission network, a path failure, he quickly switched its path, the He can still ensure a smooth path of data transmission, and realize packet loss is very small, does not affect the normal network communication. If using a single path transmission data, once the fault from the fault occurrence to confirm all the data from the path failure this time packets are lost, and the path of recovery often takes a long time. In actual speech communication, when delay is greater than 500ms communication failure. Therefore, compared to the single data transmission path, multi path transmission mode can make the path in turn caused by the failure of packet loss and delay is reduced greatly, but also conducive to the network congestion control, improve the utilization rate of the cyber source, effectively improve the network throughput. In this paper, we set up a network simulation environment for SCTP multi path transmission function. We establish five communication paths. We put them from the Path1 named Path5. in the first step, I The set of 40 ms RTT (Round Time Trip) to send the data to the remote computer. When the remote computer is not received within a specified time packet, the receiver detects a fault, the fault information will be returned to the sender, the sender will confirm the fault path and switch to the other path. We carried out experiments in C + + language with the help of Studio and Visual environment. Simulation results show that the proposed method can reduce the error caused by the communication path and the fault. This method can also help reduce the communication delay and can be improved in a certain extent. The method can increase the transmission power of the communication network.

【學(xué)位授予單位】:北京交通大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TN919.2

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