應用層組播中用戶自私性研究
發(fā)布時間：2018-11-27 21:09
【摘要】：應用層組播技術是傳統(tǒng)組播技術在應用層的拓展,以個人計算機等設備為傳輸和通信的終端,有效地隔離了IP組播在技術和安全層面帶來的不足。但是以往的組播協(xié)議在用戶自私性問題方面的研究仍然有許多不足的地方,本文則針對此問題進行了研究。本文通過三方面的工作對于組播協(xié)議中用戶自私性問題進行了研究,旨在有效地降低組播中用戶自私行為的概率。首先采用樹-網(wǎng)混合結構來進行組播樹的構建,此模型將樹和網(wǎng)狀形狀相結合,同時采用動態(tài)傳輸機制有效的避免控制開銷的過度增加;其次結合樹網(wǎng)混合模型給出了綜合考慮各種網(wǎng)絡參數(shù)的綜合傳輸算法;最后將市場機制引入到了組播協(xié)議當中,使得節(jié)點之間的無償數(shù)據(jù)傳輸變?yōu)橛袃攤鬏敗１疚耐ㄟ^以上三方面的工作來控制自私行為產(chǎn)生的概率。論文最后通過Myns進行仿真,驗證了該模型可達到預期的目標,有效地降低了組播協(xié)議中用戶自私行為發(fā)生的概率。
[Abstract]:Application layer multicast (ALM) is an extension of traditional multicast technology in the application layer. It uses personal computer and other devices as the transmission and communication terminal, effectively isolating the shortcomings of IP multicast in the technical and security aspects. However, previous researches on user selfishness still have many shortcomings. In this paper, the problem of user selfishness in multicast protocol is studied in three aspects in order to effectively reduce the probability of user selfishness in multicast. Firstly, the tree network structure is used to construct the multicast tree. The model combines the tree with the mesh shape, and the dynamic transmission mechanism is used to effectively avoid the excessive increase of control overhead. Secondly, combined with the tree network hybrid model, a comprehensive transmission algorithm considering various network parameters is given. Finally, the market mechanism is introduced into the multicast protocol, which makes the free data transmission between nodes become paid transmission. In this paper, we control the probability of selfish behavior through the above three aspects of work. Finally, the Myns simulation shows that the proposed model can achieve the desired goal and reduce the probability of user selfishness in multicast protocol.
【學位授予單位】：南京郵電大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP393.03
本文編號：2362046
[Abstract]:Application layer multicast (ALM) is an extension of traditional multicast technology in the application layer. It uses personal computer and other devices as the transmission and communication terminal, effectively isolating the shortcomings of IP multicast in the technical and security aspects. However, previous researches on user selfishness still have many shortcomings. In this paper, the problem of user selfishness in multicast protocol is studied in three aspects in order to effectively reduce the probability of user selfishness in multicast. Firstly, the tree network structure is used to construct the multicast tree. The model combines the tree with the mesh shape, and the dynamic transmission mechanism is used to effectively avoid the excessive increase of control overhead. Secondly, combined with the tree network hybrid model, a comprehensive transmission algorithm considering various network parameters is given. Finally, the market mechanism is introduced into the multicast protocol, which makes the free data transmission between nodes become paid transmission. In this paper, we control the probability of selfish behavior through the above three aspects of work. Finally, the Myns simulation shows that the proposed model can achieve the desired goal and reduce the probability of user selfishness in multicast protocol.
【學位授予單位】：南京郵電大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TP393.03
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