(turn) What is the AP and BP of the mobile phone?

Ap:application Processor, i.e. application chip

Bp:baseband Processor, i.e. baseband chip

What are you doing, two-core double-core chant, how to make an AP and BP Ah

Originally, the FCC (Federal Communications Commission) certification requirements to separate the AP and BP, because the RF control-related functions (signal modulation, coding, RF displacement, etc.) are highly time-related, it is best to put these functions on a CPU core run, and on this CPU core run a real-time operating system, So the AP core operating system and driver bugs will not cause the device to send catastrophic data to the mobile network, and once the BP is designed and certified, no matter how you use the operating system and application software changes, it can correctly perform communication functions, The designer of the handset can also design the user interface and application software more freely.

The APS run our usual operating systems and applications, such as Android, Windows phone 7. And what we're talking about, the two-core, the quad-core, is the number of AP cores.

So you can understand that the AP can be counted as your computer, BP is a computer modem, no modem, you have no way to communicate with the outside world.

The main role of BP is to send and receive a variety of data, that is, the communication is closely related to the BP DSP implementation of the Protocol algorithm, the data encoding and decoding, the CPU in BP is responsible for coordinating control and base station and AP communication. The power management module in BP has a great impact on the phone's standby time, because most of the time the CPU of BP should be idle, and it will open every time to see if there is a call on the paging channel. In addition, the SIM module is also directly linked to the BP, the operation of the SIM card is also through the BP.

Qualcomm, which started as a communications chip and gained the authorization of ARM, has the ability to integrate the AP and BP into a single chip, with the AP and BP communicating through the bus. And like Texas Instruments and Nvidia these are not the communications system started the company, the AP is AP,BP is BP. So high-pass chips are used on mobile phones, which is very suitable, and if used in a tablet computer without the need for mobile networks, it is not necessarily the most appropriate.

Mobile phone developers, such as Motorola, will develop the mobile phone package into AP and BP two parts, running on the application Processor (AP) package called AP package, including operating system, user interface and applications; The packages associated with baseband Processor (BP) are called BP packages, including communication control software for baseband modems. Accordingly, the so-called refresh of the mobile AP and the BP file is to update the two packages to the phone. For the convenience of the brush machine, there are also the AP,BP files and flex files (the phone's parameter profile) together as a package

(turn) What is the AP and BP of the mobile phone?