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Data transmission method and base station based on wave beam forming in multi-antenna system

A data transmission method and multi-antenna system technology, applied in diversity/multi-antenna systems, wireless communication, space transmit diversity, etc., can solve problems affecting beamforming performance, beam collision, increasing small-interval interference, etc., to avoid lightning effect, reduce latency, and improve performance

Active Publication Date: 2009-08-12
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology

However, there is a so-called flashlight effect in beamforming, that is, due to the time-varying nature of the beam direction, there is a lag in the CQI (Channel Quality Information, Channel Quality Information) fed back by the user, which affects the performance of beamforming. When shape forming improves the spectral efficiency of the cell edge, beam collision problems at the edge of adjacent cells may occur, which increases the interference between cells

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  • Data transmission method and base station based on wave beam forming in multi-antenna system
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  • Data transmission method and base station based on wave beam forming in multi-antenna system

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Embodiment Construction

[0031] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated.

[0032] The basic idea of ​​the present invention is to divide cell users into cell center users and cell edge users, form hierarchical beam groups by pre-planning the beamforming schemes used in each cell, and combine the frequency planning scheme to control the cell edge users by multiple Combined beams serve it and improve the performance of cell edge users.

[0033] figure 1 A flowchart showing an embodiment of a beamforming-based data transmission method in a multi-antenna system of the present invention.

[0034] Such as figure 1As shown, in step 102, the available frequency resources of the system are divided into multiple frequency sub-bands. The sub-band division can be uniformly configured by the system. The divided frequency sub-bands may or may not be orthogonal to each other. In th...

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Abstract

The invention discloses a data transmission method and a base station based on beam forming in a multi-antenna system, which relate to the field of mobile communication. The method comprises the steps of: dividing available frequency resources of the system into a plurality of sub-bands; adopting different beam forming proposals to the sub-bands of various cells respectively, and acquiring layered beam groups aiming at the sub-bands; determining a main service cell of a user, and judging whether the user is a cell edge user or is a cell center user of the main service cell; and selecting a plurality of beams for data transmission of the user when the user is the cell edge user. The data transmission method and the base station, by serving cell edge users through combining the beams, avoidthe lightning effect caused by the beam forming in the prior art, ensure that users positioned at different positions of a cell can all be covered, and improve the performance of the cell edge users.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a data transmission method based on beamforming in a multi-antenna system and a base station. Background technique [0002] With the development of mobile communication systems, users have higher and higher requirements for system performance and business types. Although the 3G mobile system, which is being gradually commercialized in the world, has greatly improved compared with the 2G system in terms of transmission rate, service type, and service quality, it still cannot meet the increasing demands of users for high-speed, high-quality wireless communication services. Therefore, the industry puts forward higher requirements for the performance indicators of future mobile communication systems. 3GPP LTE (Long Term Evolution, Long Term Evolution) system, as a 3G enhanced system evolving from 3G system to 4G system, aims to establish a system with high data rate, low ...

Claims

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Application Information

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IPC IPC(8): H04B7/08H04B7/06H04W16/10H04W16/14
Inventor 许晓东李静雅陈鑫章辉郝志洁张忠起赵英宏陶小峰张平
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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