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Method and system for correcting delay inequality

A technology of delay difference and time deviation, which is applied in wireless communication, synchronization devices, electrical components, etc., to achieve the effect of improving system performance and spectrum efficiency

Active Publication Date: 2013-03-06
ZTE CORP
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  • Abstract
  • Description
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Problems solved by technology

[0005] In view of this, the main purpose of the present invention is to provide a delay difference correction method and system, to solve the problem of delay difference caused by the cumulative effect of timing synchronization deviation and channel delay difference between APs, thereby improving system performance

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Embodiment Construction

[0057] In order to correct the delay difference to solve the problem of delay difference caused by the cumulative effect of timing synchronization deviation and channel delay difference between APs, so as to improve system performance and spectrum efficiency, the delay difference between different APs of the UE can be measured to The time delay difference calibration information is obtained, and the data transmission of the different APs is adjusted accordingly.

[0058] Specifically, the above technical description may have the following two operation schemes.

[0059] Solution 1: UE measures and feeds back the delay difference between different APs. This solution generally includes the following steps:

[0060] Step 1, the base station notifies the UE to perform delay difference measurement between different APs;

[0061] Step 2, the UE measures the delay difference between different APs based on the configuration of the base station to obtain the delay difference calibrati...

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Abstract

The invention discloses a method and a system for correcting delay inequality. By the method and the system, delay inequality among different APs (access points) can be measured to obtain delay inequality correction information, and data transmitted by the different APs can be adjusted according to the delay inequality correction information. Owing to the technology for correcting the delay inequality, the method and the system have the advantages that the problem of delay inequality caused by timing synchronism deviation among the APs and a delay inequality accumulative effect of channels can be solved, and accordingly the performance of the system and the spectral efficiency are improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and system for correcting time delay difference. Background technique [0002] With the continuous improvement of people's requirements for future communication, more attention is paid to the spectral efficiency of the cell edge. How to improve the transmission quality and throughput of the cell edge has become a subject of competing research, and CoMP technology has emerged as the times require. [0003] A CoMP (Coordinated Multi-Point, coordinated multi-point) technology utilizes antennas of multiple access points (AccessPoint, AP) to implement cooperative transmission and reception. Usually, one or more access points are set under one base station (cell), and multiple points for CoMP coordination may be multiple access points from one cell, or multiple access points from multiple cells; where , the cell includes the primary cell and the coordinated cell of the terminal. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/04H04W56/00
CPCH04W56/00H04W56/001H04W24/08
Inventor 赵亚军毕存磊莫林梅孙云锋
Owner ZTE CORP
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