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Design method for radio frequency automatic power control module of TD-SCDMA terminal and its circuit

A technology of automatic power control and design method, applied in power management, transmission control/balance, electrical components, etc., can solve problems such as interference, power value rushing out of the time template box, etc.

Active Publication Date: 2007-04-11
RDA CHONGQING MICROELECTRONICS TECH CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

The disadvantage of this control method is that in actual control, the power value may break out of the time template frame at a certain moment, causing the burst signal of one or more time slots to cause interference to users in other time slots

Method used

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  • Design method for radio frequency automatic power control module of TD-SCDMA terminal and its circuit
  • Design method for radio frequency automatic power control module of TD-SCDMA terminal and its circuit
  • Design method for radio frequency automatic power control module of TD-SCDMA terminal and its circuit

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Embodiment Construction

[0019] Fig. 4 is a block diagram of the automatic power control PvT of a specific embodiment of the design method of the present invention, in which 1 is the time module frame, 2 is the power control curve, 3 is the duration after the transmission power becomes the maximum, and 4 is the user terminal The required transmit power value, 5 is the step length, and 6 is the power value increased or decreased by each step adjustment. In this example, the order of the order register (APC_STEP_COUNTER) is 3, that is, it is necessary to gradually increase the transmit power of the user terminal through three steps to finally reach the required power value. The specific process is: when APC_FLAG changes from 0 to 1, the APC module sends data STEP1, and after the time length of the step (APC_STEP_LENGTH), the APC module sends data STEP2, and after the time length of the step (APC_STEP_LENGTH), The APC module sends data STEP3, and after ABB receives these data in turn, it controls the RF ...

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Abstract

This invention relates to a design method for automatic power control module under the burst out mode of terminals in a TD-SCDMA radio communication system and its circuit, in which, the emission power is adjusted for two or over two times of time intervals of adjustment and user terminals compute the necessary emission power values according to the signal intensity received and compute the step times, time length of the step or the power value increased or reduced each time necessary for adjusting the user terminals to reach the required emission power values so as to control the emission power of the user terminal to reach to the needed one.

Description

technical field [0001] The invention relates to a design method of an automatic power control module of a wireless communication terminal, in particular to a design method of a radio frequency automatic power control module in a terminal burst mode in a TD-SCDMA wireless communication system (hereinafter referred to as the TD-SCDMA system). At the same time, the present invention also relates to a radio frequency automatic power control circuit in a terminal burst mode in a TD-SCDMA system that realizes the design method of the present invention. Background technique [0002] In the TD-SCDMA system, different user terminals are located at different distances from the base station. If different user terminals use the same power to transmit signals to the base station, due to the different distances between them and the base station, the signal will not reach the base station. The power at the base station is also different. When the signal transmitted by the user terminal cl...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04J13/02H04W52/04
Inventor 杨小勇林毅曹海涛郑建宏
Owner RDA CHONGQING MICROELECTRONICS TECH CO LTD
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