Device to real-time control of radio frequency chip and analog base band chip

Abstract

The present invention discloses a device to control RF chips and simulating base band chips in real time, which comprises a first first-in first-out memory to memorize execution time and corresponding control command according to a first-in first-out mode, a second first-in first-out memory to memorize rectification time and corresponding rectification command in light of first-in first-out mode,a timer to record current time, a comparator to compare a current time recorded by the timer with a bottom execution time of the first first-in first-out memory and the second first-in first-out memory, a selector to select and output a control command corresponding to the bottom execution time of the first first-in first-out memory or a rectification command corresponding to the bottom rectification time of the second first-in first-out memory according to the comparison, thus fulfilling real-time control over the RF chip and the simulating base band chip. The control device has the advantages of easy realization and strong capacity to tolerate errors and realizes control command modification, undoing and insertion.

Description

technical field [0001] The invention relates to the communication field, in particular to a device for real-time control of a radio frequency chip and an analog baseband chip. Background technique [0002] In the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, the synchronization requirements between the network and the terminal are very strict. Therefore, the digital baseband chip must be able to accurately and real-time control the radio frequency chip to perform operations such as receiving, sending, opening, and closing. Similarly, the digital baseband chip also needs to control the analog baseband chip in real time. [0003] The prior art implements real-time control of radio frequency chips and analog baseband chips by storing control commands and corresponding command execution times, then using time counters to match command execution times, and finally executing control commands. Specifically, a set of control commands and corresponding ...

AI Technical Summary

Problems solved by technology

Specifically, a set of control commands and the corresponding command execution time are configured through software, and the control commands and the corresponding command execution time are stored in the memory without order, and the implementation is relatively complicated

[0004] In addition, the time counting adopts the method of intra-frame offset, and the counting accuracy is usually 1 / 8 chip (chip) or 1 / 4 chip, and the frame number information is not included in the time information

In this way, the execution time of the command in the next frame may be matched in the current frame, resulting in the execution of the control command at the wrong time, so the fault tolerance of the prior art real-time control is low

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