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Method for acquiring secondary timing advance and equipment

A technology of timing advance and acquisition method, applied in the field of auxiliary timing advance acquisition, can solve the problems of wasting system resources and increasing signaling overhead, and achieves the effect of saving system resources and signaling overhead

Active Publication Date: 2012-10-17
HUAWEI TECH CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, after the auxiliary cell is configured, if the auxiliary cell does not continue to use the existing TA of the main cell, the terminal initiates random access in the auxiliary cell to obtain the auxiliary TA of the auxiliary cell, which may increase the random access process and Signaling overhead during TA maintenance, wasting system resources

Method used

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  • Method for acquiring secondary timing advance and equipment
  • Method for acquiring secondary timing advance and equipment
  • Method for acquiring secondary timing advance and equipment

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Embodiment Construction

[0034] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] In the embodiment of the present invention, the base station may be an evolved base station (evolved Node B; eNB), a base station (Base Station; BS), a Node B, an access point (access point), etc. The base station can be a macro base station, a medium base station, or a micro base station, such as a femto base station. Each ba...

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Abstract

The embodiments of the invention provide a method for acquiring secondary timing advance (TA) and equipment. The method comprises the following steps that: after a terminal receives a secondary cell activation command, or after the secondary cell is activated, if a secondary time alignment timer (TAT) of the secondary cell is not operated, the terminal initiates an random access process, wherein the secondary TA of the secondary cell is different from primary TA of a primary cell; and the terminal obtains the secondary TA according to the received TA during the random access process. According to method for acquiring secondary TA and equipment provided in the embodiments of the invention, after the secondary cell activation command emitted by a base station is received or the secondary cell is activated, the terminal initiates the random access process so as to obtain the secondary TA, thereby saving signaling cost and system resources.

Description

Technical field [0001] The present invention relates to the field of communication technology, and in particular to a method and equipment for obtaining an auxiliary timing advance. Background technique [0002] Long Term Evolution (LTE) is a next-generation wireless communication standard that is being developed by the 3rd Generation Partnership Project (3GPP). It has high spectrum utilization and transmission speed, and low transmission. Advantages such as time delay. The terminal of the LTE system realizes the synchronization of uplink transmission and the base station through the timing advance (Timing Advance; TA), and maintains the uplink synchronization through the time alignment timer (Time Alignment Timer; TAT). The introduction of TA enables the uplink transmission of all terminals to be reached at the time expected by the base station, thereby avoiding uplink transmission conflicts between terminals and realizing time division multiplexing. [0003] In order to provide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W74/08
CPCH04W36/0072H04W56/00H04W56/0045H04W74/0833H04W56/0005H04W72/0446H04W72/1268H04W88/08
Inventor 曾清海黄曲芳
Owner HUAWEI TECH CO LTD
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