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A method, device and system for sending sidelink channel state information report

A state information and link channel technology, applied in the field of communication, can solve the problems such as CSI has no reference value, cannot obtain sidelink resource 1, and side link resource 1 cannot meet the maximum transmission delay.

Active Publication Date: 2022-07-29
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If terminal 1 has no sidelink data to send to terminal 2, terminal 1 cannot obtain sidelink resource 1 to transmit CSI
Or, terminal 1 has side link resource 1, but side link resource 1 cannot meet the requirement of the maximum transmission delay allowed by the CSI, then the CSI sent by terminal 1 to terminal 2 on side link resource 1 will be no reference value

Method used

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  • A method, device and system for sending sidelink channel state information report
  • A method, device and system for sending sidelink channel state information report
  • A method, device and system for sending sidelink channel state information report

Examples

Experimental program
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Effect test

example 1

[0177] Example 1) The base station dynamically schedules the first sidelink resource for the first terminal 20 .

[0178] When the first sidelink CSI report is triggered, the first terminal 20 may send a first SR and / or a sidelink buffer status report (SL-BSR) to the base station to acquire the first sidelink resource. However, before sending the first SR, the first terminal 20 first needs to acquire the first SR configuration and the first SR resource for sending the first SR.

[0179] As an implementation, the first terminal 20 may obtain the first SR configuration and the first SR resource for sending the first SR in the following manner:

[0180] On the one hand, the first terminal 20 is configured with a first SR configuration and a first SR resource. The first SR configuration and the first SR resource are associated with a specific SR, where the specific SR is used to request sidelink resources for transmitting sidelink CSI reports.

[0181] On the other hand, the fir...

example 2

[0308] Example 2: The base station configures a configuration grant (Configured Grant) for the first terminal 20 .

[0309] As a possible example, as Figure 8 As shown, before the first sidelink channel state information CSI report is triggered, the method provided by this embodiment of the present application may further include:

[0310] Step 801 and step 802 are the same as the description of step 601 and step 602 .

[0311] The difference is: in Figure 8 In the illustrated embodiment, the first indication information has the above-mentioned second meaning. In addition, the auxiliary information may also include a period and a time offset value for the first terminal 20 to send the first sidelink CSI report. The period and time offset values ​​may be determined autonomously by the first terminal 20, or may be indicated by the second terminal 30 for the first terminal 20, which is not limited in this embodiment of the present application.

[0312] Step 803: The base stat...

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PUM

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Abstract

Embodiments of the present application provide a method, apparatus, and system for sending a sidelink channel state information report, so as to avoid a situation where a terminal does not have available sidelink resources for feeding back CSI. The solution includes: when the first sidelink channel state information CSI report is triggered, the first terminal acquires the first sidelink resource configured by the base station for the first terminal; wherein, the first side Downlink resources may be used to transmit side downlink CSI reports. The first terminal sends the first sidelink CSI report to the second terminal on the first sidelink resource, where the first sidelink CSI report is used to reflect the first terminal and the CSI of the sidelink between the second terminal. The solution can be applied to areas such as unmanned driving, autonomous driving, assisted driving, intelligent driving, connected driving, intelligent connected driving, car sharing, artificial intelligence and other fields.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a method, device, and system for sending a sidelink channel state information report. Background technique [0002] In the new radio (NR) V2X, for unicast communication, in order to allow the terminal 1 to set the modulation used when transmitting data according to the channel status information (CSI) of the sidelink (sidelink) Coding mode, the CSI feedback mechanism of sidelink is introduced. Among them, a feedback mechanism such as figure 1 As shown, terminal 2 sends a CSI trigger indication to terminal 1, and terminal 1 feeds back CSI to terminal 2 after receiving the trigger indication. [0003] In order to transmit CSI including feedback to terminal 2, terminal 1 first needs to acquire sidelink resources. However, when the terminal 1 is in the radio resource control (RRC) connection state and the base station configures the termin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10H04B7/06
CPCH04W24/10H04B7/0626H04W92/18H04W76/14H04W72/23H04W4/40H04W72/25H04L1/1858H04W72/20H04W72/543
Inventor 徐海博王君魏冬冬王键
Owner HUAWEI TECH CO LTD