Communication method, user equipment and system

A communication method and user equipment technology, applied in the field of user equipment and systems, and communication methods, capable of solving problems such as UE's inability to obtain PUCCH resource configuration, and achieving the effect of avoiding transmission errors

Active Publication Date: 2010-07-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a communication method, user equipment and system, which can solve the technical problem that the UE is in an uplink out-of-synchronization state and cannot obtain PUCCH resource configuration

Method used

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  • Communication method, user equipment and system
  • Communication method, user equipment and system
  • Communication method, user equipment and system

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Embodiment Construction

[0039] 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 persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] Such as figure 1 As shown, Embodiment 1 of the present invention provides a timing calibration method, and this embodiment may include the following steps:

[0041] S101. Before the time alignment timer expires, request to obtain a timing calibration value;

[0042] S102. Receive a timing calibration value, and calibrate an uplink transmission opportunity according to the timing calibration value.

[0043] In the prior art, if the UE cannot obtain the...

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Abstract

The invention discloses a communication method, which comprises the following steps that: user equipment (UE) requests to acquire a timing calibration value before a time aligning timer is overtime; the timing calibration value is received and an uplink transmission time is adjusted according to the timing calibration value. In the embodiment of the invention, the UE actively requests timing calibration to prevent the time aligning timer from becoming overtime and keep the UE in an uplink synchronous state so as to solve the problem that PUCCH resource allocation cannot be acquired when the UE is in the uplink synchronous state. The communication method, the user equipment and a system provided by the embodiment of the invention can also solve the problem of transmission error because a network side device cannot sense the PUCCH allocation change of the UE.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a communication method, user equipment and system. Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) system, the user equipment (User Equipment, UE) maintains the synchronization of uplink transmission through the Time Alignment Timer (Time Alignment Timer, TAT), and the UE judges whether it is in the uplink through whether the TAT is in operation sync status. [0003] During the random access process, the UE obtains the timing advance (TimingAdvance, TA) used to determine the uplink transmission opportunity, and starts TAT; the timing value of the TAT is configured by the UE according to the received RRC message, or adopts a default value. In order to meet the mobility requirements, the UE in the uplink synchronization state will receive the Timing Advance Command (TimingAdvance Command) regularly issued by the evolved base station (...

Claims

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Application Information

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IPC IPC(8): H04W56/00H04B7/26
CPCH04W76/02H04W76/10
Inventor 曾清海高闻
Owner HUAWEI TECH CO LTD
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