【摘要】：隨著移動(dòng)互聯(lián)網(wǎng)的快速發(fā)展,通過移動(dòng)手持設(shè)備接入網(wǎng)絡(luò)已成為主流。目前,智能手機(jī)市場(chǎng)中最主流,最普及的操作系統(tǒng)當(dāng)屬Android操作系統(tǒng)。然而,目前對(duì)于Android平臺(tái)通信系統(tǒng)的研究,都是一些都是在集中式、固定網(wǎng)絡(luò)下實(shí)現(xiàn)的。Android移動(dòng)設(shè)備想要在網(wǎng)絡(luò)中通信必須通過無線接入點(diǎn)或基站。這讓搭載Android操作系統(tǒng)的終端在接入網(wǎng)絡(luò)時(shí)對(duì)基礎(chǔ)設(shè)施過于依賴,令其靈活性大打折夠。為此,筆者提出了一種適合移動(dòng)終端的Ad Hoc網(wǎng)絡(luò),并在Android操作系統(tǒng)下對(duì)其做了具體實(shí)現(xiàn)。本文中,設(shè)計(jì)了一個(gè)Android平臺(tái)下的Ad Hoc網(wǎng)絡(luò)通信系統(tǒng)。此系統(tǒng)可以實(shí)現(xiàn)搭載Android操作系統(tǒng)的移動(dòng)終端的Ad Hoc通信。整個(gè)系統(tǒng)的設(shè)計(jì)參考了TCP/IP協(xié)議,分為鏈路層、網(wǎng)絡(luò)層、傳輸層以及應(yīng)用層。鏈路層選用最新的WiFi Direct技術(shù),在程序中通過調(diào)用Android API從而實(shí)現(xiàn)了節(jié)點(diǎn)間點(diǎn)對(duì)點(diǎn)的鏈路傳輸。網(wǎng)絡(luò)層選擇了適合Android操作系統(tǒng)的AODV協(xié)議,AODV是Ad Hoc網(wǎng)絡(luò)中的混合型路由協(xié)議,在對(duì)此協(xié)議進(jìn)行必要的修改后在Android平臺(tái)上進(jìn)行了實(shí)現(xiàn)。傳輸層依然使用TCP/IP中的UDP協(xié)議來完成相鄰節(jié)點(diǎn)的端到端傳輸。隨后把這三層一起封裝成Ad Hoc協(xié)議庫,這樣就使得任何開發(fā)者都可以通過此協(xié)議庫來實(shí)現(xiàn)其具有Ad Hoc功能的應(yīng)用。在應(yīng)用層,筆者開發(fā)了一個(gè)基于Ad Hoc協(xié)議庫的聊天程序,在本文的最后介紹了這個(gè)程序。本文中開發(fā)的Ad Hoc協(xié)議庫和Android聊天應(yīng)用均是在Windows 7操作系統(tǒng)下Eclipse IDE環(huán)境中完成的,編程語言為Java。
[Abstract]:With the rapid development of mobile Internet, mobile handheld devices access network has become the mainstream. At present, the most popular and popular operating system in the smartphone market is the Android operating system. However, the research on the Android platform communication system is the.Android shift implemented under the centralized and fixed network. If the device wants to communicate in the network, it must pass through the wireless access point or the base station. This makes the terminal on the Android operating system too dependent on the infrastructure while accessing the network, which makes it flexible enough. For this reason, a Ad Hoc network suitable for mobile terminals is proposed and implemented under the Android operating system. In this paper, a Ad Hoc network communication system under the Android platform is designed. This system can implement Ad Hoc communication of the mobile terminal carrying the Android operating system. The whole system design refers to the TCP/IP protocol, which is divided into link layer, network layer, transmission layer and application layer. The link layer selects the latest WiFi Direct technology and is used in the program. Android API is invoked to achieve link point link transmission between nodes. Network layer selects AODV protocol suitable for Android operating system. AODV is a hybrid routing protocol in Ad Hoc network. After the necessary modification of this protocol, it is implemented on the Android platform. The transmission layer still uses UDP protocol in TCP/IP to complete the protocol. The end to end of adjacent nodes is transmitted. Then these three layers are encapsulated into Ad Hoc protocol library, so that any developer can use this protocol library to implement its application with Ad Hoc function. In the application layer, I developed a chat program based on Ad Hoc protocol library. In the end of this paper, the program is introduced. The developed Ad Hoc protocol library and Android chat application are completed in the Eclipse IDE environment under the Windows 7 operating system, and the programming language is Java..
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN929.5;TP316

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本文編號(hào)：2139436