Timing advance updating method and device and mobile terminal

A technology of timing advance and update method, applied in the field of timing advance update method, device and mobile terminal

Pending Publication Date: 2021-07-06
TCL COMM (NINGBO) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After uplink synchronization, the terminal obtains the TA amount, but the time when the uplink signal arrives at the base station may change with time, therefore, the terminal needs to continuously update its uplink timing advance to maintain uplink synchronization
Since the mobile terminal cannot autonomously notify the base station to update the timing advance according to the current network environment state

Method used

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  • Timing advance updating method and device and mobile terminal
  • Timing advance updating method and device and mobile terminal
  • Timing advance updating method and device and mobile terminal

Examples

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0042] Embodiments of the present invention provide a timing advance updating method, device and mobile terminal. The method for updating the timing advance is applied to a mobile terminal, including: monitoring network conditions, and judging whether the parameter value of the network condition meets a preset parameter value; if the parameter value of the network condition does not meet the preset parameter value , then initiate an update request of the timing advance to the ...

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Abstract

The embodiment of the invention discloses a timing advance updating method and device and a mobile terminal. The timing advance updating method is applied to the mobile terminal, and comprises the following steps: monitoring a network condition, and judging whether a parameter value of the network condition meets a preset parameter value or not; if the parameter value of the network condition does not meet the preset parameter value, initiating an update request of timing advance to a base station, and sending the parameter value of the network condition to the base station; receiving an update value of the timing advance returned by the base station according to the update request, and performing uplink transmission according to the update value. According to the scheme, the terminal can automatically adjust the timing advance in time according to the network condition so as to avoid unnecessary uplink out-of-step.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, in particular to a timing advance updating method, device and mobile terminal. Background technique [0002] In LTE technology, a mechanism of timing advance TA is proposed to ensure time synchronization of base stations. In order to ensure the orthogonality of uplink transmission and avoid intra-cell interference, the base station requires that signals from different terminals in the same subframe but with different frequency domain resources arrive at the base station at basically the same time. As long as the base station receives the uplink data sent by the terminal within the range of CP (Cyclic Prefix, cyclic prefix), it can correctly decode the uplink data. By properly controlling the offset of each terminal, the base station can control the time when uplink signals from different terminals arrive at the base station. For a terminal far away from the base station, du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W56/00
CPCH04W24/08H04W56/0045
Inventor 陈红芬谢雨端
Owner TCL COMM (NINGBO) CO LTD
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