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Channel state information reference resource configuration method and determination method, base station and terminal

A channel state information and reference resource technology, which is applied in the field of base station and terminal, channel state information reference resource configuration, and can solve the problem of high terminal measurement complexity

Active Publication Date: 2014-04-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] For the traditional R8 / 9 / 10 system, since CRS (Cell Specific Reference Signal, cell reference signal) is sent in every valid downlink subframe, the terminal can perform channel measurement or interference measurement based on each subframe, each All downlink effective subframes can be a CSI reference resource, and for the R11 system, CSI-RS and IMR are configured periodically. If each effective subframe is a CSI reference resource, it will lead to computational complexity for the terminal , especially for CoMP terminals, because such terminals need to calculate and feed back the CSI of multiple CSI Processes (processes) (one CSIProcess corresponds to one NZP (Non Zero Power, non-zero power) CSI-RS configuration and one IMR configuration), if Considering that such a terminal supports carrier aggregation with a maximum of 5 carriers, the measurement complexity for the terminal is relatively high

Method used

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  • Channel state information reference resource configuration method and determination method, base station and terminal
  • Channel state information reference resource configuration method and determination method, base station and terminal
  • Channel state information reference resource configuration method and determination method, base station and terminal

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Experimental program
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Effect test

Embodiment 1

[0204] The base station determines the measurement period of the CSI reference resource configured for the terminal based on information such as the accuracy of the channel state information fed back by the terminal. Then the base station notifies the terminal of the measurement period of the CSI reference resource of the corresponding CSI measurement process through terminal-specific high-layer signaling.

[0205] The terminal obtains the measurement period of the CSI reference resource of the corresponding CSI measurement process by receiving the terminal-specific high-level signaling, thereby determining the period of the CSI reference resource. The terminal side determines the CSI reference resource by using the determined period of the CSI reference resource and the subframe offset of the lowest CSI Process, and performs channel state information measurement on the corresponding CSI reference resource.

[0206] The base station side uniformly configures the period and subfr...

Embodiment 2

[0208] The base station determines the measurement period of the CSI reference resource configured for the terminal based on information such as the accuracy of the channel state information fed back by the terminal. Then the base station notifies the terminal of the measurement period of the CSI reference resource of the corresponding CSI measurement process through terminal-specific high-layer signaling.

[0209] The terminal obtains the measurement period of the CSI reference resource of the corresponding CSI measurement process by receiving the terminal-specific high-level signaling, thereby determining the period of the CSI reference resource. The terminal side determines the CSI reference resource by using the determined period of the CSI reference resource, the IMR configuration corresponding to the lowest CSI Process, and the lowest subframe index of the subframe cluster collision subframe, and performs channel state information measurement on the corresponding CSI refe...

Embodiment 3

[0212] The base station determines the subframe offset configured for the CSI reference resource of the terminal based on information such as the accuracy of the channel state information fed back by the terminal. Then the base station notifies the terminal of the measurement subframe offset of the CSI reference resource of the corresponding CSI measurement process through terminal-specific high-layer signaling.

[0213] The terminal obtains the subframe offset of the CSI reference resource of the corresponding CSI measurement process by receiving the terminal-specific high-layer signaling, thereby determining the subframe offset of the CSI reference resource. The terminal side determines the CSI reference resource by using the determined period of the CSI reference resource as 5 ms and receiving the subframe offset obtained from the terminal-specific high-level signaling, and performs channel state information measurement on the corresponding CSI reference resource.

[0214] ...

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Abstract

The invention provides a channel state information reference resource configuration method. The channel state information reference resources configuration method comprises the following steps that: a base station configures channel state information reference resources corresponding to a channel state information (CSI) measurement process for a terminal through terminal dedicated high-level signaling; and the channel state information (CSI) measurement process is one of a CSI process, a combination of the CSI process and a sub frame cluster, and a combination of the CSI process and a CSI report. The invention further provides a channel state information reference resource determination method. According to a method for the base station to aperiodically trigger terminal feedback, when the base station aperiodically triggers the terminal feedback, the minimum interval of two times of aperiodic triggering is N millisecond. According to a method for the terminal to aperiodically trigger feedback, when the terminal aperiodically triggers the feedback, the minimum interval of two times of aperiodic feedback triggering execution is N millisecond. The invention also provides a base station and a terminal.

Description

technical field [0001] The present invention relates to the communication field, in particular to a channel state information reference resource configuration method, a determination method, a base station and a terminal. Background technique [0002] After the Long Term Evolution (LTE for short) system has gone through several versions of R8 / 9 / 10, the R11 technology has been accurately studied successively. At present, some R8 products are gradually commercialized, and R9 and R10 are subject to further product planning. [0003] After going through R8 and R9 stages, R10 added many new features on the basis of the first two, such as DMRS (Demodulation Reference Signal, demodulation reference signal), CSI-RS (ChannelState Information Reference Signal, channel state information reference Signal) and other pilot characteristics, 8-antenna support and other transmission and feedback characteristics, etc., especially eICIC (enhanced Inter-Cell InterferenceCancelling, Inter-Cell ...

Claims

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Application Information

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IPC IPC(8): H04W24/04H04W88/02H04W88/08
Inventor 郭森宝孙云锋李儒岳张峻峰
Owner ZTE CORP
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