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Method for indicating channel state information and communication device

A state information, indicating channel technology, applied in the direction of space transmit diversity, radio transmission system, electrical components, etc., can solve the problem of CSI reporting inappropriate feedback method, etc., to achieve the effect of reducing bit overhead

Active Publication Date: 2020-10-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004]However, the design of the CSI report in the current protocol is not suitable for the above feedback methods

Method used

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  • Method for indicating channel state information and communication device
  • Method for indicating channel state information and communication device
  • Method for indicating channel state information and communication device

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Experimental program
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Embodiment Construction

[0112] The technical solution in this application will be described below with reference to the accompanying drawings.

[0113] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: global system for mobile communications (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (wideband code division multiple access (WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long termevolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex ( time division duplex (TDD), universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, the future fifth generation (5th generation, 5G) system or new wireless (new radio, NR), vehicle to other equipment (Vehicle-to-X ...

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Abstract

The application provides a method for indicating channel state information (CSI) and a communication device. The method and device can be applied to a communication system, such as LTE, LTE-A, 5G, V2X, LTE-V, V2V, Internet of Vehicles, MTC, IoT, LTE-M, M2M, Internet of Things, and the like. The method comprises the following steps: generating and sending a CSI report, the first portion of the CSIreport including at least a plurality of fields that may predetermine overhead for indicating the number of frequency domain vectors reported for each spatial domain vector on each of the R transportlayers and may jointly indicate the number of transport layers without requiring a separate RI field to indicate; and decoding the second portion of the CSI report based on a plurality of fields of predeterminable overhead designed at the first portion, thereby obtaining a specific indication of the frequency domain vector. Therefore, network equipment can correctly interpret the CSI feedback, guarantees the data transmission performance, and match a dual-domain compressed codebook feedback mode.

Description

technical field [0001] The present application relates to the field of wireless communication, and more particularly, to a method and a communication device for indicating channel state information. Background technique [0002] In massive multiple-input multiple-output (Massive MIMO) technology, network equipment can reduce the interference between multiple users and the interference between multiple signal streams of the same user through precoding, which is beneficial to Improve signal quality, realize space division multiplexing, and improve spectrum utilization. [0003] The terminal device may determine the precoding vector through channel measurement, etc., and hopes to make the network device obtain a precoding vector that is the same as or similar to the precoding vector determined by the terminal device through feedback. In order to reduce feedback overhead and improve feedback accuracy, in an implementation manner, the terminal device may indicate the precoding v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/0456H04B7/0417
CPCH04B7/0626H04B7/0478H04B7/0421
Inventor 高翔刘鹍鹏
Owner HUAWEI TECH CO LTD