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Sidelink HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledgement Character) sending method, and method and equipment for determining PSFCH (Physical Single Frequency Channel) resources

A transmission method and resource technology, applied in the field of communication, can solve transmission and other problems, and achieve the effect of satisfying reliability requirements

Inactive Publication Date: 2021-02-23
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method for sending sidelink HARQ-ACK, a method and equipment for determining PSFCH resources, and solves the problem of how to report sidelink HARQ-ACK with multiple service priorities through the Uu interface, as well as the direct link with multiple service priorities The problem of how Sidelink feedback control information (SFCI) is transmitted on Sidelink

Method used

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  • Sidelink HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledgement Character) sending method, and method and equipment for determining PSFCH (Physical Single Frequency Channel) resources
  • Sidelink HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledgement Character) sending method, and method and equipment for determining PSFCH (Physical Single Frequency Channel) resources
  • Sidelink HARQ-ACK (Hybrid Automatic Repeat Request-Acknowledgement Character) sending method, and method and equipment for determining PSFCH (Physical Single Frequency Channel) resources

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0131] Example 1: About the sending method of multi-service priority sidelink HARQ-ACK:

[0132] The mapping relationship between the first identifier and the HARQcodebook is configured in a predefined way, or in a way configured by the base station through high-layer signaling.

[0133] Optionally, the first identifier includes one or more of the following: PFI identifier (PC5QoS FlowIdentifiers), PPPP, etc., used to characterize the QoS requirements of the service / data packet corresponding to the HARQ codebook, specifically including the following methods:

[0134] - Configure the first identification threshold in a predefined way, or in a way configured by the base station through high-layer signaling. When the first identification corresponding to the data packet is lower or higher than the first threshold, use the first The HARQ codebook is to use the second HARQ codebook when the first identifier corresponding to the data packet is higher or lower than the second thresho...

example 2

[0138] Example 2: About the sending method of multi-service priority sidelink HARQ-ACK:

[0139] The base station determines the codebook used by the sidelink HARQ-ACK according to the priority reported by the terminal, PFI identifier (PC5QoS Flow Identifiers) and other related information, and indicates the HARQ codebook used by the terminal through the physical layer downlink control information of the scheduled sidelink data. The specific implementation is as follows:

[0140] - For example, there are at least two DCI formats for scheduling sidelink data: DCI format 5A and DCI format5B, when using DCI format 5A to schedule sidelink data, use the first HARQ codebook, when using DCI format 5B to schedule sidelink data, use the second HARQ codebook;

[0141]- For example, there are at least two types of RNTIs used to scramble the DCI for scheduling sidelink data. When using RNTI 1 to scramble the DCI for scheduling sidelink data, use the first HARQ codebook; when using RNTI 2...

example 3

[0146] Example 3: Regarding the PSFCH resource determination method based on the first information:

[0147] The first information is included in sidelink control information (Sidelink Control Information, SCI), and is used to indicate the priority of the data packet on the PSSCH scheduled by it;

[0148] -Configure multiple PSFCH resource pools / resource sets for the receiving end in a predefined way, or the base station / transmitting end configures multiple PSFCH resource pools through high-level signaling, and the receiving end determines one of them from the configured multiple resource pools according to the first information A PSFCH resource pool / resource set; or

[0149] - configure the PSFCH resource pool / resource set for the receiving end in a predefined way, or the base station / transmitting end configures the PSFCH resource pool / resource set through high-level signaling, and the receiving end determines the PSFCH resource pool / resource set from the configured resource ...

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Abstract

Provided in embodiments of the present invention are a method for sending a sidelink HARQACK, and a method and device for determining a PSFCH resource. The method comprises steps of determining a first PUCCH resource according to PUCCH configuration information and / or DCI sent by a network side; determining an HARQ codebook according to a first identifier or according to an indication of a networkside, the first identifier being used for indicating priority information or QoS of a sidelink data packet; and sending the HARQ codebook on the first PUCCH resource. The method is advantaged in thatthe time delay of the Sidelink HARQACK of different services can be ensured, and reliability can be satisfied.

Description

technical field [0001] The embodiment of the present invention relates to the field of communication technologies, and in particular to a method for sending a sidelink (Sidelink, SL) hybrid automatic repeat request acknowledgment (HARQ-ACK), a physical direct link feedback channel (Physical A method and device for determining Sidelink Feedback Channel (PSFCH) resources. Background technique [0002] In order to reuse related designs in New Radio (NR) as much as possible, Sidelink HARQ-ACK may be reported on the Physical Uplink Control Channel (PUCCH), so sidelink HARQ-ACK with multiple service priorities How to report through the Uu interface (the interface between the terminal and the base station) is an urgent problem to be solved. [0003] The delay and reliability requirements of different Sidelink services are different. If the same PSFCH resource determination mechanism is used, the requirements of different services cannot be guaranteed, or certain resources will be ...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/16H04L1/00H04L5/00H04W72/04H04W72/12
CPCH04L1/1812H04L1/1607H04L1/0028H04L5/0055H04W72/20H04W72/23H04L1/16H04L1/18H04W72/04H04L1/00H04W72/12H04L5/00H04W4/70
Inventor 张轶夏亮王启星
Owner CHINA MOBILE COMM LTD RES INST
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