US-12628160-B2 - Feedback information transmission method and apparatus, base station, user equipment and storage medium

US12628160B2US 12628160 B2US12628160 B2US 12628160B2US-12628160-B2

Abstract

Provided are a feedback information transmission method and apparatus, a base station, a user equipment and a storage medium. The method includes sending a setting parameter of a physical downlink control channel (PDCCH) search space; sending a scheduled dedicated uplink resource grant or a scheduled dedicated downlink resource grant through the PDCCH search space; and in response to receiving a physical uplink shared channel (PUSCH) of a user equipment (UE), sending a PUSCH feedback indication to the UE through the PDCCH search space so that the UE stops sending the remaining repetition number of the PUSCH.

Inventors

Xiubin Sha
Bo Dai
Ting Lu
Li Niu
Jie Tan

Assignees

ZTE CORPORATION

Dates

Publication Date: 20260512
Application Date: 20220114
Priority Date: 20210401

Claims (14)

1 . A feedback information transmission method, applied to a base station of a non-terrestrial network and comprising: sending a setting parameter of a physical downlink control channel (PDCCH) search space; sending a scheduled dedicated uplink resource grant or a scheduled dedicated downlink resource grant through the PDCCH search space; and in response to receiving a physical uplink shared channel (PUSCH) of a user equipment (UE), sending a PUSCH feedback indication to the UE through the PDCCH search space to enable the UE to stop sending a remaining repetition number of the PUSCH; wherein the method further comprises: sending a discontinuous transmission (DTX) parameter to enable the UE to send repeated transmissions of the PUSCH according to the DTX parameter; wherein the DTX parameter comprises: a number of times of each repeated transmission of the PUSCH of the UE, and a DTX length; or a division number of the repeated transmissions of the PUSCH of the UE, and the DTX length; and wherein the DTX length refers to a gap that controls discontinuous performance of the repeated transmissions of the PUSCH.
2 . The method according to claim 1 , further comprising: sending a second PDCCH monitoring gap of the PDCCH search space to enable the UE to receive the PUSCH feedback indication according to the second PDCCH monitoring gap and stop sending the remaining repetition number of the PUSCH.
3 . The method according to claim 2 , wherein the second PDCCH monitoring gap has a same time-domain start position as a first PDCCH monitoring gap of the PDCCH search space and is less than the first PDCCH monitoring gap; wherein the first PDCCH monitoring gap is an integer multiple of the second PDCCH monitoring gap.
4 . The method according to claim 1 , further comprising: sending a PDCCH receiving occasion to enable the UE to receive the PUSCH feedback indication according to the PDCCH receiving occasion and stop sending the remaining repetition number of the PUSCH.
5 . The method according to claim 4 , wherein the PDCCH receiving occasion is located at a position which is offset backward by a threshold time length from an end position of a continuous repeated transmission of the PUSCH of the UE; or wherein the PDCCH receiving occasion is located at a position which is offset backward by a time length of a hybrid automatic repeat request round-trip time (HARQ RTT) timer from an end position of a continuous repeated transmission of the PUSCH of the UE.
6 . A feedback information transmission method, applied to a user equipment of a non-terrestrial network and comprising: receiving a setting parameter of a physical downlink control channel (PDCCH) search space; monitoring a dedicated uplink resource grant or a dedicated downlink resource grant through the PDCCH search space; sending a physical uplink shared channel (PUSCH) to a base station, and monitoring a PUSCH feedback indication through the PDCCH search space; and in response to receiving the PUSCH feedback indication, stopping sending a remaining repetition number of the PUSCH; wherein the method further comprises: receiving a discontinuous transmission (DTX) parameter; wherein sending the PUSCH to the base station comprises: performing repeated transmissions of the PUSCH according to the DTX parameter; wherein the DTX parameter comprises: a number of times of each repeated transmission of the PUSCH of the UE, and a DTX length; or a division number of the repeated transmissions of the PUSCH of the UE, and the DTX length; and wherein the DTX length refers to a gap that controls discontinuous performance of the repeated transmissions of the PUSCH.
7 . The method according to claim 6 , further comprising: receiving a second PDCCH monitoring gap of the PDCCH search space.
8 . The method according to claim 7 , wherein monitoring the PUSCH feedback indication through the PDCCH search space comprises: monitoring the PUSCH feedback indication after the second PDCCH monitoring gap of the PDCCH search space.
9 . The method according to claim 7 , wherein the second PDCCH monitoring gap has a same time-domain start position as a first PDCCH monitoring gap of the PDCCH search space and is less than the first PDCCH monitoring gap; wherein the first PDCCH monitoring gap is an integer multiple of the second PDCCH monitoring gap.
10 . The method according to claim 6 , further comprising: receiving a PDCCH receiving occasion.
11 . The method according to claim 10 , wherein monitoring the PUSCH feedback indication through the PDCCH search space comprises: monitoring the PUSCH feedback indication at the PDCCH receiving occasion in the PDCCH search space; wherein the PDCCH receiving occasion is located at a position which is offset backward by a threshold time length from an end position of a continuous repeated transmission of the PUSCH of the UE; or wherein the PDCCH receiving occasion is located at a position which is offset backward by a time length of a hybrid automatic repeat request round-trip time (HARQ RTD) timer from an end position of a continuous repeated transmission of the PUSCH of the UE.
12 . A base station, comprising: at least one processor; and a memory configured to store at least one program, wherein when executed by the at least one processor, the at least one program causes the at least one processor to perform the feedback information transmission method according to claim 1 .
13 . A user equipment, comprising: at least one processor; and a memory configured to store at least one program, wherein when executed by the at least one processor, the at least one program causes the at least one processor to perform the feedback information transmission method according to claim 6 .
14 . A non-transitory computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to perform the feedback information transmission method according to claim 1 .

Description

CROSS REFERENCE TO RELATED APPLICATIONS This is a National Stage Application, filed under 35 U.S.C. 371, of International Patent Application No. PCT/CN2022/072021, filed on Jan. 14, 2022, which claims priority to Chinese Patent Application No. 202110358204.2 filed with the China National Intellectual Property Administration (CNIPA) on Apr. 1, 2021, the disclosures of which are incorporated herein by reference in their entireties. TECHNICAL FIELD The present application relates to the field of wireless communication technology, for example, a feedback information transmission method and apparatus, a base station, a user equipment and a storage medium. BACKGROUND Since an enhanced machine type communication (eMTC) user equipment (UE) has relatively high energy-saving requirements, and power consumption of an uplink transmission process of the user equipment is much higher than that of a downlink receiving process of the UE, for example, when the power consumption of the cellular Internet of things (CIoT) is evaluated, the sending power consumption of the UE is about six times as high as the receiving power consumption of the UE, to save the power consumption of the transmission process of the UE, a physical downlink control channel-based hybrid automatic repeat request acknowledgment (PDCCH based HARQ ACK) function is introduced in the eMTC specification. This function is applicable to coverage enhancement scenarios. If a base station receives a physical uplink shared channel (PUSCH) in advance, the base station sends a physical downlink control channel (PDCCH) hybrid automatic repeat request acknowledgment (HARQ ACK) indication to the UE so as to prematurely end the transmission of the PUSCH of the UE, thereby saving the wireless resources and reducing the power consumption of the UE. However, in non-terrestrial networks (NTN), due to a relatively large transmission delay and a relatively large monitoring gap set for a PDCCH, the arrival time of the PDCCH HARQ ACK indication sent by the base station to the UE is always behind the completion time of the transmission of the PUSCH in the UE, and the PDCCH based HARQ ACK function fails to prematurely end the transmission of the PUSCH. As a result, the wireless resources cannot be saved, and the power consumption of the UE cannot be reduced. SUMMARY Embodiments of the present application provide a feedback information transmission method and apparatus, a base station, a user equipment and a storage medium so that in a non-terrestrial network, a physical downlink control channel-based hybrid automatic repeat request acknowledgment function can be implemented, the repeated transmissions of a physical uplink shared channel can be stopped in advance, and the power consumption of a user equipment in the wireless communication process can be reduced. Embodiments of the present application provide a feedback information transmission method. The method includes the following: A setting parameter of a physical downlink control channel (PDCCH) search space is sent; a scheduled dedicated uplink resource grant or a scheduled dedicated downlink resource grant is sent through the PDCCH search space; and in response to receiving a physical uplink shared channel (PUSCH) of a user equipment (UE), a PUSCH feedback indication is sent to the UE through the PDCCH search space so that the UE stops sending the remaining repetition number of the PUSCH. Embodiments of the present application further provide a feedback information transmission method. The method includes the following: A setting parameter of a physical downlink control channel (PDCCH) search space is received; a dedicated uplink resource grant or a dedicated downlink resource grant is monitored through the PDCCH search space; a physical uplink shared channel (PUSCH) is sent to a base station, and a PUSCH feedback indication is monitored through the PDCCH search space; and in response to receiving the PUSCH feedback indication, sending of the remaining repetition number of the PUSCH is stopped. Embodiments of the present application further provide a feedback information transmission apparatus. The apparatus includes a configuration sending module, a resource scheduling module and a channel receiving module. The configuration sending module is configured to send a setting parameter of a physical downlink control channel (PDCCH) search space. The resource scheduling module is configured to send a scheduled dedicated uplink resource grant or a scheduled dedicated downlink resource grant through the PDCCH search space. The channel receiving module is configured to, in response to receiving a physical uplink shared channel (PUSCH) of a user equipment (UE), send a PUSCH feedback indication to the UE through the PDCCH search space so that the UE stops sending the remaining repetition number of the PUSCH. Embodiments of the present application further provide a feedback information transmission apparatus. The apparatus includes a