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Channel state information sending method and device

A technology of channel state information and state information, which is applied in the direction of transmission path sub-channel allocation, signaling allocation, and signaling as a feature, and can solve problems such as the inability to realize multiple serving cells

Active Publication Date: 2014-02-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at the problem that CSI of multiple serving cells and / or CSI-RS resources cannot be transmitted on PUSCH resources in the related art, the present invention provides a method and device for transmitting channel state information to at least solve the above problems

Method used

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  • Channel state information sending method and device

Examples

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Embodiment 1

[0051] Aiming at the problem that the related art does not support simultaneous transmission of CSI of multiple serving cells and / or multiple CSI-RS resources, an embodiment of the present invention provides a terminal, which includes a channel state information (CSI) transmitting device .

[0052] image 3 is a schematic structural diagram of an apparatus for sending channel state information according to an embodiment of the present invention, such as image 3 As shown, the device includes: an acquisition module 30, configured to acquire N physical uplink shared channel PUSCH resources for transmitting channel state information CSI, wherein, N is an integer greater than or equal to 1; a transmission module 32, coupled with the acquisition module 30, used The CSI is sent on the N PUSCH resources according to a predetermined rule.

[0053] In an implementation manner of the embodiment of the present invention, the acquisition module 30 acquires the N PUSCH resources in at le...

Embodiment 2

[0086] Figure 5 It is a flowchart of a method for sending channel state information according to an embodiment of the present invention, such as Figure 5 As shown, the method includes the following steps (step S502-step S504):

[0087] Step S502, the terminal acquires N physical uplink shared channel (PUSCH) resources for sending channel state information (CSI), where N is an integer greater than or equal to 1;

[0088]Step S504, the terminal sends the CSI on the N PUSCH resources according to a predetermined rule.

[0089] The PUSCH resource in step S502 can be obtained in one or more of the following ways;

[0090] Mode 1: high-level signaling configures the PUSCH resource for sending CSI, and obtains the PUSCH resource from high-level signaling;

[0091] Mode 2: The downlink control information (DCI) indicates the PUSCH resource for sending the CSI, and acquires the PUSCH resource according to the indication of the DCI;

[0092] Mode 3: The downlink control informatio...

Embodiment 3

[0125] Corresponding to the above method for sending channel state information, an embodiment of the present invention also provides a method for acquiring channel state information, Figure 6 It is a flowchart of a method for obtaining channel state information in an embodiment of the present invention, such as Figure 6 As shown, the method mainly includes the following steps (step S602-step S604):

[0126] Step S602, the base station provides the terminal with N physical uplink shared channel (PUSCH) resources for sending channel state information (CSI);

[0127] Step S604, the base station obtains the channel state information sent by the terminal on the N PUSCH resources;

[0128] Wherein, the base station provides the terminal with N PUSCH resources for sending CSI in at least one of the following ways: the base station configures the N PUSCH resources for the terminal through high-level signaling; the base station configures the N PUSCH resources for the terminal throu...

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Abstract

Disclosed are a channel state information (CSI) sending method and device. The sending method comprises: a terminal obtaining N physical uplink shared channel (PUSCH) resources for sending CSI, N being an integer greater than or equal to 1; the terminal sending the CSI on the N PUSCH resources according to a predetermined rule. The predetermined rule comprises one of the following: when N=1, the terminal sends the CSI on the resource; when N is greater than 1, the terminal divides the CSI into N groups, each group corresponds to a PUSCH resource, and the CSI of the corresponding group is sent on the corresponding PUSCH resource; when N is greater than 1, the terminal selects 1 PUSCH resource from the N PUSCH resources, and the terminal sends the CSI on the selected PUSCH resource. The present invention can effectively reduce the delay of the CSI report, thereby improving system performance.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for sending channel state information. Background technique [0002] In the long-term evolution system (LTE, Long Term Evolution), the control information that needs to be sent in the uplink includes correct / error response information (ACK / NACK, Acknowledgment / Negative Acknowledgment) and channel state information (CSI, Channel State Information), wherein the channel state information includes the following: channel quality indication (CQI, Channels quality indication), precoding matrix indication (PMI, Pre-coding Matrix Indicator), and rank indication (RI, Rank Indicator). [0003] In the LTE system, the ACK / NACK response message is sent on the physical uplink control channel (PUCCH, Physical Uplink Control) in format 1 / 1a / 1b (PUCCH format1 / 1a1 / b). If the terminal (UE, User Equipment) needs to send an uplink For data, it is sent on the Physical Uplink S...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04L1/00H04L1/18
CPCH04L1/0028H04L5/005H04L5/0055H04L5/0057
Inventor 杨维维戴博梁春丽喻斌
Owner ZTE CORP
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