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Method for measuring downlink channel state information, base station and terminal

A channel state information and measurement method technology, applied in the downlink channel state information measurement method, base station and terminal field, can solve the problems of prolonged measurement time, inability to realize beam fast switching, etc., and achieve the effect of reducing measurement delay

Active Publication Date: 2021-03-26
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide a method for measuring downlink channel state information, a base station, and a terminal, so as to solve the problem that the measurement delay of downlink channel state information is too long, resulting in the inability to realize fast beam switching

Method used

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  • Method for measuring downlink channel state information, base station and terminal
  • Method for measuring downlink channel state information, base station and terminal
  • Method for measuring downlink channel state information, base station and terminal

Examples

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no. 1 example

[0032] Such as figure 1 As shown, the first embodiment of the present invention provides a method for measuring downlink channel state information, which is applied to a base station, and the method includes:

[0033] Step 101, acquiring uplink channel state information of uplink channels corresponding to multiple first virtual antennas.

[0034] Wherein, the above-mentioned uplink channel state information may be received quality (RSRQ) or received power (RSRP) of the uplink pilot signal sent by the terminal. In addition, the above-mentioned multiple first virtual antennas may be multiple first virtual antennas of the above-mentioned base station, or multiple first virtual antennas of neighboring base stations of the base station, and which base station the multiple first virtual antennas specifically belong to, It will be described in detail later.

[0035] In the embodiment of the present invention, in order to facilitate the understanding of the above method, the meaning...

no. 2 example

[0041] Such as figure 2 As shown, the second embodiment of the present invention provides a method for measuring downlink channel state information, which is applied to a base station, and the method includes:

[0042] Step 201: Receive an uplink pilot signal sent by a terminal through multiple first virtual antennas of a base station.

[0043]Wherein, each first virtual antenna of the base station receives an uplink pilot signal sent by the terminal, such as a channel sounding reference signal (SRS, Sounding Reference Signal).

[0044] Wherein, in the second embodiment of the present invention, before performing the above step 201, the above method further includes the following step: sending to the terminal the first configuration information of the terminal sending the uplink pilot signal. Wherein, the first configuration information includes the time-frequency position where the terminal sends the uplink pilot signal. In this way, the base station can identify the ident...

no. 3 example

[0068] The above first embodiment to the second embodiment respectively introduce the measurement methods of the downlink channel state information in different scenarios in detail, and the following will combine Figure 4 The base station corresponding to it is further introduced.

[0069] Such as Figure 4 As shown, the third embodiment of the present invention provides a base station, and the base station 400 includes:

[0070] The first acquiring module 401 is configured to acquire uplink channel state information of uplink channels corresponding to a plurality of first virtual antennas;

[0071] The second obtaining module 402 is configured to obtain the first downlink channel state information of the downlink channel corresponding to each first virtual antenna according to the uplink channel state information of the uplink channel corresponding to each first virtual antenna.

[0072] Optionally, the first acquisition module 401 includes:

[0073] The first acquisition...

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Abstract

The embodiment of the invention provides a measurement method of a downlink channel state information, a base station and a terminal. The method comprises the following steps: acquiring uplink channelstate information of an uplink channel corresponding to multiple first virtual antennas; and acquiring the first downlink channel state information of the downlink channel corresponding to each firstvirtual antenna. Through the measurement method provided by the embodiment of the invention, the measurement delay of the downlink channel state information can be reduced, and the fast switching ofthe beam is realized.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for measuring downlink channel state information, a base station and a terminal. Background technique [0002] The high frequency band is unanimously sought after by the industry because of its extremely wide available spectrum resources, especially a large number of free spectrum resources. However, due to its high frequency, the high-frequency band has a large corresponding propagation loss, and it is easy to be blocked by obstacles and cause great shadow fading. Therefore, in the fifth-generation mobile communication technology (5G) system, the coverage of high-frequency cells will be much smaller than that of low-frequency cells. In order to avoid this phenomenon as much as possible, the third generation partnership project (3GPP) physical layer defines a beam management (beam management) technology. This technology utilizes multi-antenna technology to shape...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04W24/02H04W36/00
CPCH04L1/0023H04W24/02H04W36/0083
Inventor 张晨璐丁昱宋扬
Owner VIVO MOBILE COMM CO LTD
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