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A method and device for notifying downlink power allocation parameters

A technology for power allocation parameters and parameters, which is applied in the field of communication and can solve problems such as reducing system spectral efficiency and interference.

Active Publication Date: 2018-10-30
北京璟石知识产权管理有限公司
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Problems solved by technology

[0003] However, when the base station sends CRS or CSI-RS to the terminal, since the transmission power of CRS or CSI-RS in the entire system bandwidth is constant, that is, there is only one downlink power allocation parameter for the existing full frequency band, CRS or CSI-RS The transmission power of CSI-RS will not change with the change of frequency band, so it will lead to the interference of relatively strong inter-cell reference signal between CRS or CSI-RS between cells, thereby reducing the spectral efficiency of the system

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  • A method and device for notifying downlink power allocation parameters
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[0164] 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 creative efforts fall within the protection scope of the present invention.

[0165] An embodiment of the present invention provides a method for notifying downlink power allocation parameters, the method is executed by a base station, such as figure 1 As shown, the method includes:

[0166] Step 101, the base station sends frequency band specific downlink power allocation parameters to the terminal, so that the terminal obtains channel state information according to the frequency band specific downlink power allocation parameters, the frequ...

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Abstract

The invention discloses a method and device for notifying downlink power allocation parameters, relates to the field of communication technology, and can reduce the interference of reference signals between cells, thereby improving the spectrum efficiency of the system. In the present invention, the frequency band-specific downlink power allocation parameters are sent to the terminal, so that the terminal obtains channel state information according to the frequency band-specific downlink power allocation parameters, and the frequency band-specific downlink power allocation parameters include N parameters, and the N The parameters respectively correspond to N frequency bands, where N is greater than or equal to 2; receiving the channel state information sent by the terminal. The solutions provided by the embodiments of the present invention are suitable for use when notifying downlink power allocation parameters.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a method and device for notifying downlink power allocation parameters. Background technique [0002] In the existing LTE system, the base station measures the channel state by sending a reference signal to the terminal, where the reference signal includes a common reference signal (Common Reference Signal, CRS) and a channel state information reference signal (ChannelState Information Reference Signal, CSI-RS) . The terminal compares the received CRS or CSI-RS after wireless channel attenuation with the original CRS or CSI-RS, so as to obtain channel state information. [0003] However, when the base station sends CRS or CSI-RS to the terminal, since the transmission power of CRS or CSI-RS in the entire system bandwidth is constant, that is, there is only one downlink power allocation parameter for the existing full frequency band, CRS or CSI-RS The transmit p...

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Application Information

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IPC IPC(8): H04W28/20
CPCH04W52/34H04W72/0453H04W72/54H04L1/0026
Inventor 任晓涛周永行薛丽霞孙静原
Owner 北京璟石知识产权管理有限公司
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