Terminal automatic gain control method and terminal for down link multi-slot business

Abstract

The invention relates to the wireless communication field and discloses a terminal automatic gain control (AGC) method and terminal for down link multi-slot business. In the invention, according to each down time slot of a current subframe, the terminal determines whether the down time slot exists a down signal corresponding with the terminal according to a transport format combination indicator (TFCI) carried by the subframe; if the down time slot does not exist the down signal, the terminal obtains AGC gain value AGC next of a next subframe corresponding with the down time slot according to a set AGC gain value backup value AGC backup; if the down time slot exists the down signal, the terminal obtains the AGC next according to a current AGC gain value and AGC adjustment amount of the down time slot. The terminal automatic gain control method and terminal for down link multi-slot business can handle receiving backup saturation caused by non-first time slot discontinuous transmission under down multi-slot configuration and ensure correct receiving of down signals by the terminal.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a terminal automatic gain control method and terminal under downlink multi-slot service in wireless communication. Background technique [0002] In wireless communication, due to the mobility of the terminal and the complexity of the wireless channel, the strength of the signal received by the terminal will change continuously. This requires the terminal to adjust the gain of the receiving part in real time, so that the received IQ signal input to the baseband processor is a basically constant value, which facilitates the processing by the baseband processor. In the traditional TD-SCDMA automatic gain control algorithm, the automatic gain control (Automatic Gain Control, referred to as "AGC") of each downlink time slot is performed separately, such as figure 1 Shown: [0003] First, set the expected value of downlink received signal strength (RSSI Target ); [00...

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a terminal automatic gain control method and terminal under the downlink multi-slot service, so that the terminal can obtain the AGC gain value suitable for receiving the service time slot under the multi-slot service, so that it can correctly process The AGC gain control when there is no signal transmission in the downlink non-first service time slot solves the problem of receiving saturation in the discontinuous transmission of the non-first time slot due to instantaneous rate fluctuations under the current downlink multi-time slot configuration under the existing method, ensuring that the terminal has a good understanding of the downlink Correct reception of the signal

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