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Method and equipment for adjusting step size of timed tracking

A technology of timing tracking and step size, applied in the directions of synchronization devices, electrical components, wireless communication, etc., can solve the problems of failure of receiving tasks and unable to recover the timing position, and achieve the effect of improving the accuracy rate and reducing the error rate.

Active Publication Date: 2011-02-16
XUANPU INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the timing tracking algorithm with a fixed step size is used, the timing position may not be restored before receiving the paging indication, resulting in failure of the receiving task

Method used

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  • Method and equipment for adjusting step size of timed tracking
  • Method and equipment for adjusting step size of timed tracking
  • Method and equipment for adjusting step size of timed tracking

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Experimental program
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Embodiment Construction

[0046] Combine below figure 1 and figure 2 , to give preferred embodiments of the present invention to describe the features and effects of the present invention in detail.

[0047] like figure 1 As shown, a method for adjusting the step size of timing tracking, when the terminal switches from the deep sleep mode to the normal mode, firstly judge whether the timing position is lost.

[0048] The following methods can be used to judge whether the timing position is lost:

[0049] Step 100, measure the signal-to-noise ratio x of the current subframe on the PCCPCH SIR ;

[0050] Step 110, judging whether the first condition is met, namely, x SIR -x SIR_AVE ≥T SIR , where T SIR is a preset threshold value, x SIR_AVE is the average signal-to-noise ratio;

[0051] If the above-mentioned conditions are established, then it is judged whether the second condition is established (step 120), i.e. x SIR ≥T SIR_Min ,TSIR_Min is the minimum signal-to-noise ratio threshold;

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Abstract

The method comprises: when the terminal is switched to a normal mode from a deep sleep mode, firstly deciding if the timing location is lost; if yes, then recalculating the step length of timing tracking. The invention also discloses an apparatus thereof comprises: a timing location decision unit used in deciding if the timing location is lost when the terminal is switched to a normal mode from adeep sleep mode; and a calculating unit for calculating the first step length of timing tracking used in re-calculating the step length of timing tracking when the location is lost.

Description

technical field [0001] The invention relates to a method and equipment for adjusting the step length of timing tracking in a TD-SCDMA system. Background technique [0002] In a mobile terminal, power consumption is an important performance parameter of the terminal. How to reduce power consumption to increase the standby time and talk time of the mobile terminal is an important aspect to be considered in terminal design. The method for reducing the power consumption of the terminal during the standby process is mainly to perform power saving processing between adjacent paging indications during the process of receiving paging information. Including: radio frequency module, analog baseband module, digital baseband part. The analog baseband part includes voltage reduction processing; the digital baseband part includes voltage reduction processing and frequency reduction processing. [0003] For the power saving mode during the paging process, it is necessary to ensure that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/02H04B1/707H04W56/00H04B1/7073
Inventor 曾嵘
Owner XUANPU INDUSTRY CO LTD