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Method and apparatus for transmitting and receiving reference signal through beam grouping in wireless communication system

A wireless communication system and reference signal technology, applied in the field of wireless communication systems, can solve problems such as the reduction of reference signal transmission efficiency

Active Publication Date: 2016-03-30
SAMSUNG ELECTRONICS CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the beamforming technique, the base station must transmit a reference signal one or more times in all beam directions available for transmission, and the user equipment must receive the reference signal in all beam directions available for reception, so that the reference signal transmission efficiency decreases

Method used

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  • Method and apparatus for transmitting and receiving reference signal through beam grouping in wireless communication system

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Embodiment Construction

[0029] Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings. Also, in the following description of the present disclosure, detailed descriptions of well-known functions or configurations incorporated herein will be omitted when they may make the subject matter of the present disclosure unclear. Terms to be described below are terms defined in consideration of functions in the present disclosure, and may vary according to a user, user's intention, or custom. Therefore, the terms should be defined based on the contents throughout the present specification.

[0030] Embodiments of the present invention described below will be described based on the assumption that a reference signal for channel measurement of a user equipment (UE) is periodically transmitted in downlink. Channel measurement basically refers to the measurement of channel quality indicator (CQI), precoding matrix indicator (PMI), rank ind...

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Abstract

A method for transmitting a reference signal by a base station in a wireless communication system, according to the present invention, comprises: transmitting configuration information for a reference signal to a terminal; performing a scrambling operation which multiplies the reference signal by a sequence on the basis of a beam group identifier for each of at least two beam groups set on a single cell; and transmitting the reference signal, to which the scrambling operation has been performed on the basis of the configuration information, to the terminal.

Description

technical field [0001] The present disclosure relates to wireless communication systems, and more particularly, to methods and apparatuses for transmitting and receiving reference signals through beam grouping in a communication system supporting beamforming. Background technique [0002] In order to meet the continuously increasing traffic demand for wireless data, wireless communication systems have been developed in the direction of supporting higher data transmission rates. Fourth generation (4G) wireless communication systems seek to develop a technology that primarily improves spectral efficiency to increase data transmission rates. However, it is difficult to meet the greatly increased demand for wireless data traffic by using only frequency efficiency improvement technology. [0003] Therefore, research on the use of a very wide frequency band is currently actively underway. Generally, the frequency band currently used for mobile communication cellular systems is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/28
CPCH04B7/0408H04B7/0617H04W16/28H04B1/62H04J3/1694H04J13/0003
Inventor 柳炫圭朴廷镐郑首龙郑哲姜鲁炅金载原尹江镇姜在垠
Owner SAMSUNG ELECTRONICS CO LTD
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