Channel state information transmission method, related device and communication system

A technology of channel state information and transmission method, applied in the field of communication system and channel state information transmission, can solve the problems of large CSI overhead, occupying uplink time-frequency resources, etc., so as to reduce reporting overhead, save bit overhead, and save uplink time. The effect of frequency resources

Active Publication Date: 2022-05-06
HUAWEI TECH CO LTD
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Problems solved by technology

However, since the network device can obtain the channel information of some antenna ports according to the SRS, if the terminal reports the CSI of the channels of all antenna ports to the network device, it will occupy a large amount of uplink time-frequency resources, and the cost of CSI reporting is relatively large.

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  • Channel state information transmission method, related device and communication system
  • Channel state information transmission method, related device and communication system
  • Channel state information transmission method, related device and communication system

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Embodiment Construction

[0137] The technical solutions in the embodiments of the present application will be described clearly and in detail below in conjunction with the accompanying drawings.

[0138] The embodiments of the present application are applicable to various communication systems, therefore, the following description is not limited to a specific communication system. For example, the embodiments of the present application may be applied to global system of mobile communication (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 term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) ), universal mobile telecommunication system (universal mobile telecommunication system, ...

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Abstract

The application discloses a channel state information transmission method, a related device and a communication system. Wherein, the method includes: the network device sends channel state information CSI configuration information to the terminal device; the configuration information of the CSI is associated with first information, the first information is used to indicate the first antenna port set of the terminal device, and the CSI configuration information is associated with the first information. The configuration information is used to indicate the reporting parameters of the CSI corresponding to the first set of antenna ports; the network device receives the CSI corresponding to the first set of antenna ports sent by the terminal device. Implementing the embodiment of the present application can associate the CSI configuration information with the first information, so that the terminal device determines the CSI of the channel of the antenna port that needs to be reported according to the first information, without blindly reporting the CSI of the channel of all antenna ports to the network device, saving Uplink time-frequency resources are saved, and CSI reporting overhead is reduced.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a channel state information transmission method, a related device and a communication system. Background technique [0002] Long term evolution (long term evolution, LTE) and next generation wireless systems widely adopt multiple input and multiple output (multiple input and multiple output, MIMO) technology. If the network device can obtain all or part of downlink channel information, precoding technology can be used to improve signal transmission quality or rate. [0003] In a frequency division duplexing (frequency division duplexing, FDD) system, the information of the precoding matrix is ​​fed back by the terminal equipment. The terminal device obtains downlink channel information by measuring channel state information reference signal (CSI-RS), and feeds back the precoding matrix information to the network device in the form of precoding matrix indicato...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10
CPCH04W24/10
Inventor 张瑞齐李雪茹
Owner HUAWEI TECH CO LTD
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