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Transmission method, terminal and base station of a hybrid automatic repeat request

A technology of hybrid automatic retransmission and transmission method, which is applied in the field of communication applications to achieve the effect of improving transmission performance and reducing HARQ feedback delay

Active Publication Date: 2022-04-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hybrid automatic repeat request transmission method, terminal and base station to solve the problem that there is currently no way to determine the HARQ corresponding to the PDSCH or SPS that is fed back in the same slot when using a dynamic codebook. - Whether the ACK is transmitted on the same PUCCH in the slot

Method used

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  • Transmission method, terminal and base station of a hybrid automatic repeat request
  • Transmission method, terminal and base station of a hybrid automatic repeat request
  • Transmission method, terminal and base station of a hybrid automatic repeat request

Examples

Experimental program
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Effect test

Embodiment 1

[0127] It is assumed that a terminal only supports URLLC service transmission, and there are at most two time-division multiplexed PUCCH resources available for transmission of ACK / NACK information in one time slot. When the base station configures only one PUCCH resource set for the UE and the set contains 8 PUCCH resources, assuming that the number of slots for PDSCH to HARQ-ACK detection configured by the high-level signaling is 1 and 2, between slot n and slot n The DCI of the PDSCH in +1 indicates that the corresponding HARQ-ACK feedback information is transmitted in the time slot n+2. The specific feedback of the UE is divided into the following different situations:

[0128] Case A: If Figure 5 As shown, in time slot n and time slot n+1, the C-DAI indications in the DCI corresponding to the PDSCH are 1 and 2 respectively, and the PRI indications in the DCI are both 000. Therefore, the time slot n and the time slot n The feedback information of PDSCH in +1 is transmit...

Embodiment 2

[0133] It is assumed that a terminal supports eMBB service and URLLC service transmission at the same time, and can determine which service transmission PDSCH is for in some way. The terminal has at most two time-division multiplexed PUCCH resources in one time slot for transmitting ACK / NACK information. When configuring PUCCH resources, the base station has the following two methods:

[0134] Method 1: eMBB and URLLC are not distinguished when configuring resources. The base station configures two PUCCH resource sets for the UE and each set contains 8 PUCCH resources. The first PUCCH resource set is used to transmit 1-2-bit ACK / NACK information, the second PUCCH resource set is used to transmit ACK / NACK information greater than 2 bits.

[0135] Method 2: Distinguish between eMBB and URLLC when configuring resources. The base station configures two PUCCH resource sets for the eMBB service of the UE, and each set contains 8 PUCCH resources. The first PUCCH resource set is use...

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Abstract

The invention provides a transmission method, a terminal and a base station of a hybrid automatic repeat request. The transmission method of the present invention includes: determining a PUCCH resource set configured for the terminal, the PUCCH resource set only includes PUCCH resources using PUCCH format 0 and PUCCH format 1; according to the PRI contained in the downlink control information DCI, the PUCCH resource set Determine the target PUCCH resource used by the HARQ feedback information corresponding to the DCI, and send the HARQ feedback information on the target PUCCH resource; wherein, the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot contains the same PRI , the PRI included in the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.

Description

technical field [0001] The present invention relates to the technical field of communication applications, in particular to a hybrid automatic repeat request transmission method, a terminal and a base station. Background technique [0002] At present, when determining the dynamic hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback codebook in 5G, it is necessary to first determine the physical downlink control channel ( Physical Downlink Control Channel, PDCCH) detection opportunity set. Wherein, the PUCCH formats specified in the 3GPP protocol for the PUCCH resources include: PUCCH format 0, PUCCH format 1, PUCCH format 2, PUCCH format 3 and PUCCH format 4. The current problem is that since the PUCCH resource indicator (PUCCH resource indicator, PRI, also called ARI) contained in the downlink control information (DCI) transmitted in different PDCCH detection opportunities can indicate different PUCCH resources, the terminal cannot determine Whether the DCI ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L5/00H04L1/18
CPCH04L5/0053H04L1/1812H04W72/23H04L1/18H04W72/04H04L5/00H04W72/02
Inventor 司倩倩高雪娟艾托尼
Owner DATANG MOBILE COMM EQUIP CO LTD
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