本文選題：移動(dòng)云計(jì)算 + 數(shù)據(jù)格式　； 參考：《中國(guó)地質(zhì)大學(xué)（北京）》2014年碩士論文

【摘要】：隨著云計(jì)算技術(shù)和移動(dòng)互聯(lián)網(wǎng)技術(shù)的快速發(fā)展，云端和移動(dòng)端相結(jié)合而形成的移動(dòng)云計(jì)算模式將深刻改變?nèi)藗兊纳罘绞�。�?dāng)今移動(dòng)網(wǎng)絡(luò)的快速發(fā)展也使得人們對(duì)通信服務(wù)的類(lèi)型要求越來(lái)越豐富和質(zhì)量要求越來(lái)越高。人們希望不管是在公司、家中、酒店還是在路上，都可以輕松而高效地處理日常事務(wù)、辦理工作業(yè)務(wù)和協(xié)作通信等等，這就要求移動(dòng)通信可以提供穩(wěn)定的、實(shí)時(shí)的通信環(huán)境。但是由于移動(dòng)終端的處理能力、續(xù)航能力和存儲(chǔ)容量都有限，尤其當(dāng)移動(dòng)終端設(shè)備通過(guò)無(wú)線(xiàn)網(wǎng)絡(luò)接入互聯(lián)網(wǎng)進(jìn)行大數(shù)據(jù)量傳輸?shù)臅r(shí)候，會(huì)產(chǎn)生一個(gè)非常大的電量消耗。因此，在保證通信穩(wěn)定性和及時(shí)性的前提下，提高移動(dòng)通信設(shè)備在通訊過(guò)程中的能效，是一個(gè)迫切需要解決的問(wèn)題。本文將比較成熟的云計(jì)算技術(shù)和當(dāng)下正蓬勃發(fā)展的移動(dòng)互聯(lián)網(wǎng)相結(jié)合，研究如何充分利用兩者各自的優(yōu)勢(shì)，為移動(dòng)設(shè)備提供一個(gè)高效、便捷、穩(wěn)定的通訊環(huán)境。 本文通過(guò)深入研究云計(jì)算的特性和移動(dòng)終端設(shè)備連接云端的方式，提出了一個(gè)優(yōu)化的移動(dòng)云計(jì)算環(huán)境下即時(shí)通訊的框架。圍繞該框架，我們從數(shù)據(jù)傳輸格式優(yōu)化技術(shù)以及如何利用Markov模型改進(jìn)網(wǎng)絡(luò)切換策略等方面進(jìn)行深入研究。首先，介紹框架云端和移動(dòng)客戶(hù)端的設(shè)計(jì)；云端分為多個(gè)層次，主要有數(shù)據(jù)緩存層、數(shù)據(jù)存儲(chǔ)層和網(wǎng)絡(luò)切換預(yù)測(cè)引擎；移動(dòng)客戶(hù)端則根據(jù)功能分為多個(gè)模塊，主要有通信、數(shù)據(jù)轉(zhuǎn)換、網(wǎng)絡(luò)管理和UI交互等四個(gè)模塊。然后，介紹了上述各層次和模塊的具體實(shí)現(xiàn)細(xì)節(jié)；在數(shù)據(jù)轉(zhuǎn)換的實(shí)現(xiàn)中，采用了一種解析速度更快、數(shù)據(jù)體積量更小的數(shù)據(jù)格式Protobuf取代現(xiàn)有的XML或JSON格式；網(wǎng)絡(luò)切換預(yù)測(cè)引擎的實(shí)現(xiàn)過(guò)程則引入了二階Markov模型，，為用戶(hù)提供網(wǎng)絡(luò)切換策略，使用戶(hù)知道在何地更應(yīng)該使用何網(wǎng)絡(luò)，從而達(dá)到節(jié)省移動(dòng)端的電量、流量消耗的目的。最后，根據(jù)移動(dòng)云計(jì)算環(huán)境下即時(shí)通訊框架實(shí)現(xiàn)的原型系統(tǒng)，通過(guò)應(yīng)用實(shí)例的測(cè)試，給出使用框架后進(jìn)行數(shù)據(jù)傳輸?shù)哪芎那闆r，驗(yàn)證框架的節(jié)能優(yōu)勢(shì)。
[Abstract]:With the rapid development of cloud computing technology and mobile Internet technology, the mobile cloud computing model formed by the combination of cloud and mobile terminal will profoundly change people's way of life. Nowadays, with the rapid development of mobile network, people demand more and more types of communication services and higher quality requirements. People hope that whether in the company, home, hotel or on the road, they can easily and efficiently handle daily affairs, work business and cooperative communication, etc., which require mobile communication to provide a stable, real-time communication environment. However, due to the processing capacity of the mobile terminal, the capacity and storage capacity of the mobile terminal are limited, especially when the mobile terminal equipment is connected to the Internet through the wireless network for large amount of data transmission, it will produce a very large consumption of electricity. Therefore, on the premise of ensuring the stability and timeliness of communication, it is an urgent problem to improve the energy efficiency of mobile communication equipment in the communication process. This paper combines the mature cloud computing technology with the booming mobile Internet, and studies how to make full use of their respective advantages to provide an efficient, convenient and stable communication environment for mobile devices. By studying the characteristics of cloud computing and the way that mobile terminal devices connect to the cloud, this paper proposes an optimized framework for instant communication in mobile cloud computing environment. Around this framework, we study the data transmission format optimization technology and how to improve the network handoff strategy using Markov model. First of all, the design of the framework cloud and mobile client is introduced. The cloud is divided into several levels, including data buffer layer, data storage layer and network switch prediction engine, and mobile client is divided into several modules according to its functions. Data conversion, network management and UI interaction are four modules. Then, the implementation details of the above layers and modules are introduced. In the implementation of data conversion, a new data format, Protobuf, which is faster in parsing speed and smaller in volume, is used to replace the existing XML or JSON format. The second order Markov model is introduced in the implementation of the network handoff prediction engine, which provides users with a network handover strategy and enables users to know where and where they should use the network so as to save the power consumption and traffic consumption of the mobile terminal. Finally, according to the prototype system of instant communication framework in mobile cloud computing environment, through the test of application examples, the energy consumption of data transmission after using the framework is given, and the advantages of energy saving of the framework are verified.
【學(xué)位授予單位】：中國(guó)地質(zhì)大學(xué)（北京）
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TP311.52;TN929.5

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