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Method and apparatus for reporting channel state

A channel state and channel state information technology, applied in the field of communication, can solve the problems of reducing spectrum efficiency, large reporting intervals, and consuming PUSCH resources

Pending Publication Date: 2021-02-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The reporting interval of periodically reporting CSI is usually very large, which will cause the base station to not know the channel situation of the UE in time, thereby reducing the spectrum efficiency
In addition, this method will consume a lot of physical uplink control channel (English: Physical Uplink Control Channel, PUCCH for short) resources
[0006] To report CSI aperiodically, the base station needs to continuously allocate dynamic physical uplink shared channel (English: Physical Uplink Shared Channel, PUSCH) resources for the UE, and at the same time instruct the UE to transmit CSI while transmitting data, even if the UE does not transmit uplink data, It must be the same, this method will consume a lot of PUSCH resources

Method used

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  • Method and apparatus for reporting channel state
  • Method and apparatus for reporting channel state
  • Method and apparatus for reporting channel state

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Experimental program
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Embodiment approach

[0350] As an implementation manner, the configuration signaling further includes information that N cells among the M cells are configured as a group and a group identifier of the group;

[0351] The transmission channel state request signaling specifically includes the group identifier.

[0352] As another implementation manner, each of the M cells has an index identifier, and the index identifiers take values ​​in a logical order, and the channel state request signaling specifically includes an index identifier of one of the M cells, so The N cells are counted from the cell indicated by the index identifier and are N consecutive cells in an active state indicated by the logical order of the index identifier.

[0353] As yet another implementation manner, the channel state request signaling further includes physical resource blocks (PRBs) and modulation and coding schemes required for reporting the CSI of the N cells in the M cells;

[0354] The receiver 32 executes the step...

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Abstract

A method and an apparatus for reporting a channel state are disclosed. User equipment (UE) uses M cells to transmit data, and a method comprises: a base station transmits configuration signaling to the UE, the configuration signaling comprising a reporting period of channel state information (CSI) of N cells in the M cells; the base station transmits a channel state request signaling to the UE, wherein the channel state request signaling is used for indicating the UE to report the CSI of the N cells; and the base station receives the CSI belonging to the cell managed by the base station in theN cells transmitted by the UE according to the reporting period. The invention also discloses a corresponding base station and user equipment. By adopting the scheme of the method and the apparatus for reporting the channel state provided by the embodiment of the invention, the base station can obtain the channel state of the cell reported by the user equipment timely and reliably at low cost, sothat the base station can arrange the transmission of downlink data efficiently.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and equipment for reporting channel state. Background technique [0002] In communication technology, the base station pre-allocates some dedicated resources for each user equipment (English: User Equipment, referred to as: UE) for transmitting channel state information (English: Channel State Information, referred to as: CSI), as the base station arranges downlink transmission in accordance with. [0003] With the continuous evolution of long-term evolution (English: Long Term Evolution, referred to as: LTE) technology, the 3rd Generation Partnership Project (English: 3rd Generation Partnership Project, referred to as: 3GPP) decided to make the cell (English: Cell ) is expanded, so the number of CSIs that the UE needs to report also increases accordingly. [0004] There are two ways for the existing UE to report CSI: report CSI periodically and report C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04L1/18H04L5/00H04W72/04
CPCH04L5/001H04L5/0057H04L5/0085H04L5/0087H04L5/0096H04L5/0098H04L1/08H04L1/1887H04W72/21H04B7/0626H04B7/063H04L5/0032H04L5/0053
Inventor 黄曲芳李元杰曾清海
Owner HUAWEI TECH CO LTD