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Method for adjusting gain of user equipment and low noise amplifier

A low-noise amplifier and user equipment technology, applied in the communication field, can solve problems such as slow cell search speed and slow initial convergence speed of AGC

Active Publication Date: 2019-05-28
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, an embodiment of the present invention provides a user equipment and a gain adjustment method to solve the problem of slow cell search speed caused by the slow initial convergence speed of AGC

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  • Method for adjusting gain of user equipment and low noise amplifier
  • Method for adjusting gain of user equipment and low noise amplifier
  • Method for adjusting gain of user equipment and low noise amplifier

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0035]It should be understood that the embodiment of the present invention is described by taking the LTE time division duplex communication system as an example, but the technical solution of the embodiment of the present invention can also be applied to other communication systems, such as Time Division Synchronous Code Division Multiple Access (Time Division Synchronous, referred to as "TD -SCDMA") system and Worldwide Interoperability for Microwave Acce...

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Abstract

An embodiment of the present invention provides user equipment. The user equipment comprises a low noise amplifier (LNA), a frequency mixer, a memory and a baseband processor. The memory is used for storing an instruction for controlling an LNA gain. The baseband processor is used for executing the following adjustment operations under the driving of the instruction: when the UE is in a cell searching stage, adjusting the LNA gain according to a first automatic gain control (AGC) adjustment policy; and after the UE and a base station are synchronized, adjusting the LNA gain according to a second AGC adjustment policy, wherein the adjustment period interval of the first AGC adjustment policy is less than the adjustment period interval of the second AGC adjustment policy. In the cell searching stage, the AGC is rapidly adjusted by a shorter adjustment period interval, so that the searching speed is improved, and cell searching is performed successfully even if an interference power is large.

Description

technical field [0001] The present invention relates to the communication field, in particular to a user equipment and a method for adjusting gain of a low noise amplifier in the communication field. Background technique [0002] In a cellular wireless communication system, a terminal realizes initial synchronization with a base station through a cell search process. Taking the Long Term Evolution (LTE for short) system as an example, the terminal detects the Primary Synchronization Signal (PSS for short) and the Secondary Synchronization Signal (SSS for short) sent by the base station, The initial synchronization with the base station is achieved, and the cell search speed affects user experience. For a time division duplex (Time Division Duplex, "TDD" for short) system, an automatic gain control (Automatic Gain Control, "AGC" for short) adjustment strategy is an important factor affecting the search speed. The AGC function is used to adjust the gain of the amplifier that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/16
CPCH04W48/16
Inventor 姜韬
Owner HONOR DEVICE CO LTD