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cqi estimation, sinr determination method and relative equipment

A determination method and terminal technology, applied in the field of communication, to achieve the effect of improving throughput

Active Publication Date: 2020-04-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The embodiment of the present invention provides a CQI estimation method, a SINR determination method and related equipment, which are used to solve the problem of using CRS or CSI-RS to measure CQI. The CRS or CSI-RS needs to be covered in the cell and distributed in the horizontal and vertical dimensions, far and wide. Questions for all recent users

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  • cqi estimation, sinr determination method and relative equipment
  • cqi estimation, sinr determination method and relative equipment

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Embodiment Construction

[0090] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0091] The core idea of ​​the terminal estimating and reporting the CQI in the embodiment of the present invention is: when the terminal is scheduled to transmit data, it measures the preset downlink DMRS port and calculates the information of the equivalent channel of the DMRS port. If the terminal has been scheduled or When being scheduled, report to the base station the CQI estimated according to the measured interference noise and th...

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Abstract

A CQI estimation method, an SINR determining method and a related device, for use in resolving the problem of measurement of CQIs by using CRSs or CSI-RSs, in which the CRSs or the CSI-RSs need to cover all users that are distributed in horizontal dimensions and vertical dimensions, some users are located at far positions and some users are located at near positions in a cell. The method comprises: a base station determines a CQI of a time-frequency resource that is most recently reported by a terminal and that is corresponding to the terminal, and determines information of a first equivalent channel of a data layer corresponding to a first DMRS in the first time-frequency resource at a time point of sending the first DMRS, the first DMRS being a DMRS used for calculating the CQI; at a next scheduling time point of the terminal, the base station determines information of a second equivalent channel corresponding to each data layer of the time-frequency resource; and the base station determines a first SINR corresponding to each data layer of the time-frequency resource at the next scheduling time point of the terminal according to the information of the first equivalent channel, the information of the second equivalent channel and the CQI.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a channel quality indicator (CQI, Channel Quality Indicator) estimation method and a signal-to-interference and noise ratio (Signal-to-Interference and Noise Ratio, SINR) determination method and related equipment. Background technique [0002] In the existing Long Term Evolution (LTE) system, the base station sends downlink Cell-Specific Reference Signal (CRS) or Channel State Information-Reference Signal (CSI-RS); The terminal measures Channel State Information (CSI, Channel State Information) based on the CRS or CSI-RS and reports it to the base station for base station scheduling. [0003] Usually CSI includes rank indicator (Rank Indicator, RI), precoding matrix indicator (Precoding Matrix Indicator, PMI), channel quality indicator (Channel Quality Indicator, CQI), etc., where CQI reflects the signal power and interference and noise power received by the termi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/336H04B7/06H04B7/0456
CPCH04B7/0456H04B7/0632H04B17/336
Inventor 宋扬苏昕刘龙
Owner DATANG MOBILE COMM EQUIP CO LTD