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A kind of transmission method of harq-ack message, terminal and base station

A transmission method and message technology, which is applied in the field of communication, can solve problems such as unspecified transmission methods, and achieve the effect of improving system efficiency

Active Publication Date: 2021-07-09
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a method for transmitting a HARQ-ACK message, a terminal, and a base station, so as to solve the problem that the HARQ-ACK feedback of the physical downlink channel received before the BWP switching is performed after the BWP switching in the prior art. The problem of clear transmission method

Method used

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  • A kind of transmission method of harq-ack message, terminal and base station
  • A kind of transmission method of harq-ack message, terminal and base station
  • A kind of transmission method of harq-ack message, terminal and base station

Examples

Experimental program
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Effect test

Embodiment 1

[0134] Such as Figure 5 As shown; CC (Component Carrier, carrier unit) 1 is used to transmit PUCCH, the activated BWP is BWP1, and CC2 is SCC (Secondary Component Carrier, auxiliary carrier unit), which is not used to transmit PUCCH, then when DL BWP switching occurs on CC2 , since the CC and BWP that transmit the HARQ-ACK feedback information have not changed, therefore, regardless of whether the downlink transmission on CC2 is the DL BWP before or after the switch, its HARQ-ACK feedback can be determined on CC1 according to the indicated K1 The corresponding moment on BWP1 is transmitted. For example, according to the scheduling, it is determined that PDSCH3 on DL BWP1 of CC1, PDSCH1 on DLBWP1 of CC2, and PDSCH2 on DL BWP2 of CC2 perform HARQ-ACK feedback in time slot n+6 on UL BWP1 of CC1, then in dynamic Under the HARQ-ACK codebook, the base station can continuously count multiple PDSCHs through C-DAI (Counter DAI, counting DAI) in the DCI used by each PDCCH, and use T-D...

Embodiment 2

[0164] For TDD, such as Figure 8 As shown, assume that CC1 is the CC that transmits PUCCH, where the original activated BWP is BWP1, and the base station sends PDCCH2 in time slot n+2 to schedule the terminal to receive PUSCH on BWP2, that is, the PDCCH2 is the UL that indicates UL / DL BWP switching Grant, at this time, if PDSCH1 still exists on BWP1 before PDCCH2 and needs to perform HARQ-ACK feedback after BWP switching, the time domain position of its HARQ-ACK feedback is determined according to the K1 value indicated in PDCCH1 scheduling the PDSCH,

[0165] For example, when K1=4, it is determined to feed back in slot n+5 after the handover, and there is no PDCCH sent at the moment after the handover is completed in this slot (because it is sent after the handover is completed, the uplink resources indicated in these PDCCHs are For the switched UL BWP, since TDD UL and DL are switched together, such a PDCCH is also sent on the switched BWP2) scheduled PUSCH or PUCCH resour...

Embodiment 3

[0168] For FDD, such as Figure 9 As shown; assume that CC1 is the CC that transmits PUCCH, where the original activated UL BWP is BWP1, and the original activated DL BWP is also BWP1. In slot n+2, the base station sends PDCCH2 to schedule the terminal to receive PUSCH on UL BWP2, that is, the PDCCH2 is the UL grant indicating UL BWP switching. At this time, if there is PDSCH1 on the activated DLBWP (that is, BWP1) before PDCCH2, HARQ-ACK feedback needs to be performed after UL BWP switching. According to the PDCCH1 that schedules the PDSCH The K1 value determines the time domain position of its HARQ-ACK feedback.

[0169] For example, when K1=4, it is determined to feed back in slot n+5 after the handover, and there is no PDCCH sent at the moment after the handover is completed in this slot (because it is sent after the handover point, the uplink resources indicated in these PDCCHs are For the switched UL BWP, since the UL and DL of FDD are switched independently, when the U...

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Abstract

The present invention provides a HARQ-ACK message transmission method, terminal and base station, wherein the transmission method includes: if the physical downlink channel received before the BWP switching of the bandwidth part needs to perform HARQ-ACK feedback after the BWP switching, Determine whether to transmit the HARQ-ACK of the physical downlink channel after the BWP switching according to a preset rule. The technical solution of the present invention can determine whether the HARQ-ACK of the physical downlink channel before the BWP switching can be transmitted after the switching according to the set conditions, and use a corresponding transmission strategy for the physical downlink channel after it is determined that it can be transmitted. HARQ‑ACK is transmitted to ensure the normal feedback of HARQ‑ACK on the physical downlink channel during BWP switching, improving system efficiency.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for transmitting HARQ-ACK messages, a terminal and a base station. Background technique [0002] With the development and change of mobile communication service requirements, many organizations such as ITU (International Telecommunication Union, International Telecommunication Union) have begun to study a new wireless communication system, that is, 5G NR (5Generation New RAT, 5th generation new radio access technology). Flexible timing relationships are supported in 5G NR. For PDSCH (PhysicalDownlink Shared Channel, Physical Downlink Shared Channel), the PDCCH (PhysicalDownlink Control Channel, Physical Downlink Control Channel) carrying its scheduling information indicates the scheduling timing relationship between PDSCH and PDCCH (Scheduling timing) and PDSCH to Its corresponding feedback timing relationship between HARQ (Hybrid Automatic Repeat Request...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04L1/16H04L1/18
CPCH04L5/0055H04L1/1607H04L1/1812H04L1/1806H04L1/1854H04L5/0007H04L5/0053H04L1/1664H04L5/0078H04L5/0098H04W72/0453H04W72/0446H04W72/23H04B7/0456H04L1/1819H04L1/1896H04L5/0092H04L5/1469
Inventor 高雪娟
Owner DATANG MOBILE COMM EQUIP CO LTD
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