基于MTK平臺的Android手機Modem驅動開發(fā)研究
[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.
【學位授予單位】:首都經濟貿易大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TP311.52;TP316
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