【摘要】：自第一部Android智能手機(jī)誕生以來(lái),Android操作系統(tǒng)不斷優(yōu)化,其以開(kāi)放性、跨平臺(tái)性、并行運(yùn)行模式和非壟斷性深受國(guó)際商業(yè)開(kāi)發(fā)人員的追捧。目前,安卓設(shè)備市場(chǎng)占有率已經(jīng)達(dá)到世界市場(chǎng)的首位,需求量日益增長(zhǎng),各國(guó)公司也在積極研發(fā)搭載Android操作系統(tǒng)的設(shè)備,以期從中獲得豐厚的收益。以Linux為基礎(chǔ)的Android是一種開(kāi)放源碼操作系統(tǒng)并且屬于BSD協(xié)議,這樣既開(kāi)放又能適應(yīng)商業(yè)開(kāi)發(fā)。手機(jī)等移動(dòng)設(shè)備的運(yùn)行“大腦”——處理器研發(fā)企業(yè),也在不斷地加大研發(fā)力度,謀求市場(chǎng)的收益份額。廉價(jià)、低功耗、高性能、兼容性強(qiáng)等成為各個(gè)手機(jī)制造公司對(duì)移動(dòng)終端處理器的優(yōu)先選擇。MTK芯片憑著較好的性價(jià)比成功搶占了大部分手機(jī)CPU市場(chǎng),本文項(xiàng)目所使用的處理器即是基于MTK平臺(tái)的芯片。智能手機(jī)基本上是由兩部分電路構(gòu)成:第一部分是高層處理電路部分,它類似于我們使用的PC電腦;其次就是基帶電路部分,基帶電路是手機(jī)最核心的構(gòu)成部分,我們使用的Modem就屬于這一部分,Android電話系統(tǒng)支持各種手機(jī)網(wǎng)絡(luò)制式,它們就是圍繞底層通過(guò)Modem硬件搭建而成。我們用手機(jī)打電話、發(fā)短消息和連接網(wǎng)絡(luò)這些行為,都是通過(guò)上層的系統(tǒng)處理后并給基帶部分發(fā)送指令,然后交由基帶部分進(jìn)行處理執(zhí)行,最后基帶部分在手機(jī)和無(wú)線網(wǎng)絡(luò)間建立起的一條邏輯通道內(nèi)完成處理,手機(jī)的語(yǔ)音通話、短消息及網(wǎng)絡(luò)運(yùn)行數(shù)據(jù)包也通過(guò)這個(gè)通道向外輸送。論文在分析相關(guān)的開(kāi)發(fā)技術(shù)和理論后,進(jìn)行了SIM2依賴SIM1的鎖卡開(kāi)發(fā)實(shí)踐。實(shí)踐表明,基于MTK的Modem系統(tǒng)開(kāi)發(fā)能夠使Android手機(jī)電話系統(tǒng)正常工作,滿足定制化要求。MTK的技術(shù)方案簡(jiǎn)潔有效,有利于商業(yè)開(kāi)發(fā)的快速有效實(shí)現(xiàn)。
[Abstract]:Since the birth of the first Android smartphone, the Android operating system has been continuously optimized. Its openness, cross-platform, parallel operation mode and non-monopoly are highly sought after by international commercial developers. The market share of Android devices has reached the top in the world market and demand is growing, and companies around the world are actively developing devices that run on the Android operating system in the hope of making a lot of money from them. Android based on Linux is an open source operating system and belongs to BSD protocol, which is open and suitable for commercial development. Mobile devices such as mobile phones run "brain"-processor R & D companies, but also continue to increase R & D efforts to seek market share. Low cost, low power consumption, high performance and strong compatibility have become the priority choice of mobile terminal processor for various mobile phone manufacturers. MTK chips have successfully captured most of the mobile phone CPU market with good performance and price ratio. The processor used in this project is a chip based on MTK platform. The smartphone is basically made up of two circuits: the first is the high-level processing circuit, which is similar to the PC computer we use, and the second is the baseband circuit, which is the core component of the phone. The Modem that we use belongs to this part of the phone system supports various mobile phone network standards, they are built around the bottom layer through Modem hardware. We use our cell phones to make phone calls, send short messages, and connect to the network, all of which are processed through the upper layer of the system and sent instructions to the baseband part, which is then sent to the baseband part for processing and execution. Finally, the baseband part is processed in a logical channel between the mobile phone and the wireless network. The mobile phone voice calls, short messages and network running data packets are also transmitted outward through this channel. After analyzing the relevant development technology and theory, the paper carries on the development practice of the lock card that SIM2 depends on SIM1. The practice shows that the development of Modem system based on MTK can make the Android mobile phone telephone system work normally and meet the requirements of customization. The technical scheme is simple and effective, which is conducive to the rapid and effective realization of commercial development.
【學(xué)位授予單位】：首都經(jīng)濟(jì)貿(mào)易大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP311.52;TP316

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