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A method, device and system for reporting channel state information

A technology of channel state information and channel matrix, which is applied in the transmission system, digital transmission system, wireless communication, etc., can solve the problems of high overhead, achieve good phase correction effect, reduce CSI feedback overhead, and avoid interference effects

Active Publication Date: 2017-06-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the main purpose of the present invention is to provide a method, device, and system for reporting channel state information, so as to solve the problem of large overhead in the existing CSI reporting methods

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  • A method, device and system for reporting channel state information
  • A method, device and system for reporting channel state information
  • A method, device and system for reporting channel state information

Examples

Experimental program
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Embodiment 1

[0066] In this embodiment, the method for reporting CSI described in the present invention, such as figure 2 As shown, the specific implementation process can be carried out according to the following steps:

[0067] Step 101, the UE measures the channel information of the coordinated multi-point measurement set, determines the set of nodes that need to report CSI, that is, determines the set of coordinated multi-point reporting nodes, and measures the channel matrix H of the main serving node s , and the channel matrix H of each coordinated node in the coordinated multi-point reporting node set c(i) ;

[0068] Step 102, UE according to the measured channel matrix H of the main serving node s , to obtain the precoding weight corresponding to the main serving node.

[0069] Here, the UE can use the measured channel matrix H of the main serving node s, by traversing the precoding weight codebook set to obtain the precoding weight of the primary serving node, the traversed p...

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Abstract

The present invention discloses a method for reporting channel state information. The method includes: when CSI needs to be reported, the UE reports to the network side the indication information used to indicate the precoding weight of the main serving node, and / or used to indicate the multi-point The coordination reports the indication information of the phase correction weight of each coordination node in the node set. The invention also discloses a device and system for reporting channel state information, which reduces the CSI feedback overhead, and can avoid the problem that different transmission layers use the same phase correction weights, resulting in inability to correlate reception, and achieve better phase The correction effect, for the case where the number of transmission layers is greater than 1, can also effectively avoid the interference caused by different transmission layers between nodes. In the present invention, the UE can also report CSI based on the multi-cooperative transmission mode indicated by the network side, which facilitates the unification of JP and CS / CB feedback modes.

Description

technical field [0001] The present invention relates to a Coordinated Multi-Point transmission / reception (CoMP, Coordinated Multi-Point transmission / reception) technology of an Advanced Long-Term Evolution (LTE-A, Advanced Long-Term Evolution) system, and in particular to a method for reporting Channel State Information (CSI, Channel State Information) ) method, device and system. Background technique [0002] With the introduction of LTE-A requirements, people pay more and more attention to node average spectral efficiency and node edge spectral efficiency. Since the uplink and downlink of the LTE-A system is based on Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) or a certain deformation of OFDM as the basic multiple access method, it is different from the traditional Code Division Multiple Access (CDMA, Code Division Multiple Access) is different from the wireless communication system of the basic multiple access multiplexin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/06H04W28/06
Inventor 孙云锋郭森宝李儒岳任敏张峻峰
Owner ZTE CORP