本文選題：內(nèi)容中心網(wǎng)絡(luò) + 分類�。� 參考：《北京交通大學(xué)》2014年碩士論文

【摘要】：摘要：隨著人們?cè)絹?lái)越依賴互聯(lián)網(wǎng)獲取資源和信息,互聯(lián)網(wǎng)所承受的壓力與日俱增。從用戶角度來(lái)講,相同區(qū)域的用戶在網(wǎng)絡(luò)數(shù)據(jù)傳輸上存在著時(shí)間和地域的相關(guān)性,當(dāng)區(qū)域中的用戶訪問(wèn)某個(gè)數(shù)據(jù)后,該區(qū)域的其他用戶也很有可能再次訪問(wèn)該數(shù)據(jù),造成同一數(shù)據(jù)的重復(fù)傳輸,浪費(fèi)網(wǎng)絡(luò)帶寬。網(wǎng)絡(luò)緩存技術(shù)的出現(xiàn)在一定程度上緩解了以上難題。隨著人們對(duì)網(wǎng)絡(luò)的認(rèn)識(shí)由基于主機(jī)位置(IP地址)到基于網(wǎng)絡(luò)內(nèi)容的逐漸轉(zhuǎn)變,網(wǎng)絡(luò)緩存的重要性逐漸凸顯。在信息中心網(wǎng)絡(luò)中,現(xiàn)有的緩存策略相對(duì)比較僵化,不能動(dòng)態(tài)地適應(yīng)不同用戶的需求和信息中心網(wǎng)絡(luò)下高緩存性能的要求。 本文通過(guò)對(duì)信息中心網(wǎng)絡(luò)下的現(xiàn)有緩存技術(shù)進(jìn)行分析,提出了一種在CCN中基于分類映射的緩存管理策略。該緩存管理策略使路由器能對(duì)網(wǎng)絡(luò)中的流量和區(qū)域用戶進(jìn)行分類和管理,更加符合不同區(qū)域的用戶對(duì)網(wǎng)絡(luò)資源的不同需求。該方案能夠支持建立資源類別和用戶類別的緩存映射關(guān)系表進(jìn)行工作,并通過(guò)建立在緩存映射關(guān)系表上的緩存策略對(duì)緩存內(nèi)容進(jìn)行管理,提高資源利用率,優(yōu)化用戶體驗(yàn)。 在此緩存管理策略基礎(chǔ)上,本文提出了基于內(nèi)容中心網(wǎng)絡(luò)的智慧緩存系統(tǒng),其主要包括內(nèi)容分類單元,用戶分類單元,緩存建立單元,緩存維護(hù)單元,緩存決定策略執(zhí)行單元和緩存替換策略執(zhí)行單元。其中,內(nèi)容分類單元通過(guò)分析數(shù)據(jù)包對(duì)網(wǎng)絡(luò)中的內(nèi)容進(jìn)行分類,用戶分類單元通過(guò)分析數(shù)據(jù)包對(duì)網(wǎng)絡(luò)中的用戶進(jìn)行分類。經(jīng)過(guò)以上兩功能單元得到的結(jié)果,通過(guò)緩存建立單元的分析建立起了用戶類別與內(nèi)容類別的緩存映射結(jié)構(gòu)。緩存維護(hù)單元負(fù)責(zé)維護(hù)已經(jīng)建立好的緩存映射結(jié)構(gòu)。緩存決定策略執(zhí)行單元和緩存替換策略執(zhí)行單元共同作用于緩存映射結(jié)構(gòu),對(duì)網(wǎng)絡(luò)內(nèi)容進(jìn)行限制和管理。
[Abstract]:Absrtact: as people rely more and more on the Internet to obtain resources and information, the pressure on the Internet is increasing day by day. From the user's point of view, users in the same area have a temporal and geographical correlation in the transmission of network data. When the user in the region accesses the data, it is very likely that the other users in the region will also access the data again. It causes repeated transmission of the same data and wastes network bandwidth. The emergence of network caching technology alleviates the above problems to a certain extent. With the gradual change of people's understanding of network from host location to network content, the importance of network cache is becoming more and more important. In the information center network, the existing cache strategy is relatively rigid and can not dynamically meet the needs of different users and high cache performance requirements under the information center network. Based on the analysis of the existing cache technology in the information center network, this paper proposes a cache management strategy based on classification mapping in CCN. The cache management strategy enables routers to classify and manage network traffic and area users, which is more consistent with the different requirements of users in different regions for network resources. This scheme can support the establishment of cache mapping relation tables of resource category and user category, and manage the cache content through the cache policy based on the cache mapping relation table, improve the resource utilization and optimize the user experience. On the basis of this cache management strategy, this paper proposes an intelligent cache system based on content center network, which includes content classification unit, user classification unit, cache establishment unit and cache maintenance unit. The cache determines the policy execution unit and the cache replacement policy execution unit. The content classification unit classifies the content in the network by analyzing the data packets, and the user classification unit classifies the users in the network by analyzing the data packets. After the results obtained by the above two functional units, the cache mapping structure of user category and content category is established by analyzing the cache establishment unit. The cache maintenance unit is responsible for maintaining the cache mapping structure that has been established. The cache decision policy execution unit and the cache replacement policy execution unit act together on the cache mapping structure to restrict and manage the network content.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP393.07

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本文編號(hào)：1966073