本文選題：移動(dòng)互聯(lián)網(wǎng)　切入點(diǎn)：Android　出處：《華南理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來，以移動(dòng)應(yīng)用為主要入口的移動(dòng)互聯(lián)網(wǎng)正逐漸地滲透到人們生活的方方面面。作為移動(dòng)應(yīng)用載體的Android平臺，憑借著開源、高度定制性等優(yōu)點(diǎn)受到越來越多人的喜愛，攻占了超過一半的全球智能手機(jī)市場。 然而，我國移動(dòng)應(yīng)用市場在高速發(fā)展的過程中存在著一些問題，移動(dòng)平臺碎片化、移動(dòng)網(wǎng)絡(luò)流量昂貴、帶寬與傳統(tǒng)網(wǎng)絡(luò)差異巨大、應(yīng)用市場惡性競爭與技術(shù)隔離等一系列問題，增加了開發(fā)難度，間接地限制了移動(dòng)應(yīng)用的用戶體驗(yàn)。本文立足于我國移動(dòng)互聯(lián)網(wǎng)發(fā)展中所受限的客觀因素，重點(diǎn)研究分析了移動(dòng)應(yīng)用在Android移動(dòng)平臺上的關(guān)鍵網(wǎng)絡(luò)通信技術(shù)，并提出更適合當(dāng)今移動(dòng)網(wǎng)絡(luò)環(huán)境的改進(jìn)性方案。 首先，論文對Android客戶端中的限量緩存技術(shù)展開分析，揭示了緩存容量在臨界情況下頻繁置換的抖動(dòng)問題，，提出了通過預(yù)加載和雙閾值的技術(shù)解決這類問題的抗抖動(dòng)緩存方案。然后，在移動(dòng)數(shù)據(jù)交換上，針對當(dāng)前移動(dòng)網(wǎng)絡(luò)的流量和吞吐量問題，提出以空間效率高的序列化數(shù)據(jù)格式取代文本型數(shù)據(jù)格式進(jìn)行數(shù)據(jù)傳輸，具體研究了序列化數(shù)據(jù)格式Protocol Buffer的實(shí)現(xiàn)原理及其在Android平臺上的使用。最后，論文對移動(dòng)應(yīng)用中的P2P通信在復(fù)雜移動(dòng)環(huán)境上的組建策略作出了詳細(xì)的研究分析，實(shí)現(xiàn)在Android平臺上的基于NAT檢測技術(shù)的成功率高、容錯(cuò)能力強(qiáng)的自適應(yīng)P2P通信框架。 經(jīng)測試實(shí)驗(yàn)證明，在通用的用戶場景中，抗抖動(dòng)緩存技術(shù)不僅有效地減少緩存置換操作次數(shù)，而且合理地利用用戶空閑時(shí)間；相對于XML和JSON這類文本型數(shù)據(jù)格式，Protocol Buffer擁有更高的編解碼效率與空間性能；自適應(yīng)通信框架能夠根據(jù)客戶端信息執(zhí)行最優(yōu)的P2P組建策略，在組建失敗的情況下能自動(dòng)改用兼容通信方式，可用性高。
[Abstract]:In recent years, the mobile Internet, which takes the mobile application as the main portal, is gradually infiltrating into every aspect of people's life. As a carrier of mobile application, the Android platform is more and more popular by more and more people with the advantages of open source and high customization. It dominates more than half of the global smartphone market. However, in the process of rapid development of mobile application market in China, there are some problems, such as fragmentation of mobile platform, expensive traffic of mobile network, huge difference between bandwidth and traditional network. A series of problems, such as vicious competition and technology isolation in the application market, increase the difficulty of development and indirectly limit the user experience of mobile application. This paper is based on the objective factors restricted by the development of mobile Internet in China. The key network communication technology of mobile application on Android mobile platform is studied and analyzed, and an improved scheme which is more suitable for today's mobile network environment is put forward. Firstly, the limited cache technology in Android client is analyzed, and the jitter problem of frequent permutation in critical case is revealed. In this paper, we propose an anti-jitter buffer scheme to solve this problem by pre-loading and dual-threshold technology. Then, in the case of mobile data exchange, aiming at the current mobile network traffic and throughput problems, This paper proposes to replace text data format with serialized data format with high spatial efficiency. The realization principle of serialized data format Protocol Buffer and its application on Android platform are studied in detail. This paper makes a detailed research and analysis on the construction strategy of P2P communication in complex mobile environment in mobile applications, and realizes an adaptive P2P communication framework based on NAT detection technology on Android platform with high success rate and strong fault-tolerant ability. The test results show that in general user scenarios, anti-jitter caching not only effectively reduces the number of cache replacement operations, but also makes reasonable use of the user's idle time. Compared with other text-based data formats such as XML and JSON, Buffer has higher coding and decoding efficiency and spatial performance. In the case of build failure can be automatically converted to compatible communication mode, high availability.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP393.01;TN929.5

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