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EP-4131818-B1 - HARQ-ACK TRANSMISSION METHOD, USER EQUIPMENT AND STORAGE MEDIUM, AND HARQ-ACK RECEPTION METHOD AND BASE STATION

EP4131818B1EP 4131818 B1EP4131818 B1EP 4131818B1EP-4131818-B1

Inventors

  • BAE, Duckhyun
  • LEE, HYUNHO
  • YANG, SUCKCHEL

Dates

Publication Date
20260506
Application Date
20210326

Claims (15)

  1. A method of transmitting hybrid automatic repeat request-acknowledgement, HARQ-ACK by a user equipment, UE, in a wireless communication system, the method comprising: receiving (S1201) a time division duplex, TDD, uplink-downlink, UL-DL, configuration and a semi-persistent scheduling, SPS, configuration; performing (S1203) SPS physical downlink shared channel, PDSCH, reception based on the SPS configuration; determining, in a first slot, a first physical uplink control channel, PUCCH, resource for a transmission of HARQ-ACK for the SPS PDSCH reception; and transmitting (S1205) the HARQ-ACK for the SPS PDSCH reception, wherein determining, in the first slot, the first PUCCH resource for the transmission of the HARQ-ACK for the SPS PDSCH reception comprises: determining, in the first slot, the first PUCCH resource for multiplexing the HARQ-ACK for the SPS PDSCH reception with first uplink control information, UCI, to be transmitted in the first slot, wherein transmitting the HARQ-ACK for the SPS PDSCH reception comprises, based on the first PUCCH resource satisfying conditions in the first slot, transmitting the HARQ-ACK for the SPS PDSCH reception on a second PUCCH resource, and wherein the conditions comprise: there being no PUCCH transmission for HARQ-ACK scheduled by downlink control information, DCI, to be performed in the first slot, and symbols of the first PUCCH resource overlapping with a symbol indicated as DL by the TDD UL-DL configuration.
  2. The method of claim 1, wherein the second PUCCH resource is an earliest next available PUCCH resource among PUCCH resources related to the SPS configuration.
  3. The method of claim 1, wherein the second PUCCH resource is an earliest available PUCCH resource among PUCCH resources related to SPS configurations for which corresponding HARQ-ACK information is transmitted on the first PUCCH resource.
  4. The method of claim 1, wherein the second PUCCH resource is an earliest next available PUCCH resource among PUCCH resources related to a plurality of SRS configurations provided to the UE.
  5. The method of any one of claims 1 to 4, wherein the first PUCCH resource is provided by a parameter n1PUCCH-AN in the SPS configuration or by a parameter SPS-PUCCH-AN-List.
  6. The method of any one of claims 1 to 5, wherein, based on the first PUCCH resource satisfying the conditions, transmitting the HARQ-ACK for the SPS PDSCH reception on the second PUCCH resource comprises: transmitting the HARQ-ACK for the SPS PDSCH reception on the second PUCCH resource without the first UCI, and wherein the first UCI is a scheduling request or channel state information report.
  7. A user equipment, UE, (100, 200) for transmitting hybrid automatic repeat request-acknowledgement, HARQ-ACK, for a wireless communication system, the UE (100, 200) comprising: at least one transceiver (106, 206); at least one processor (102, 202); and at least one computer memory (104, 204) operably connected to the at least one processor (102, 202) and storing instructions that, when executed, cause the at least one processor (102, 202) to perform operations according to any one of claims 1 to 6.
  8. A computer readable storage medium storing at least one computer program including instructions that, when executed by at least one processor, cause the at least one processor to perform operations for a user equipment, UE, (100, 200) according to any one of claims 1 to 6.
  9. A method of receiving hybrid automatic repeat request-acknowledgement, HARQ-ACK, by a base station, BS, from a user equipment, UE, in a wireless communication system, the method comprising: transmitting (S1301) a time division duplex, TDD, uplink-downlink, UL-DL, configuration and a semi-persistent scheduling, SPS, configuration; performing (S1303) SPS physical downlink shared channel, PDSCH, transmission based on the SPS configuration; determining, in a first slot, a first physical uplink control channel, PUCCH, resource for a reception of HARQ-ACK for the SPS PDSCH reception; and receiving (S1305) the HARQ-ACK for the SPS PDSCH transmission, wherein determining, in the first slot, the first PUCCH resource for the reception of the HARQ-ACK for the SPS PDSCH reception comprises: determining, in the first slot, the first PUCCH resource for multiplexing the HARQ-ACK for the SPS PDSCH reception with first uplink control information, UCI, to be received in the first slot, wherein receiving the HARQ-ACK for the SPS PDSCH transmission comprises, based on the first PUCCH resource satisfying conditions in the first slot, receiving the HARQ-ACK for the SPS PDSCH transmission on a second PUCCH resource, and wherein the conditions comprise: there being no PUCCH transmission for HARQ-ACK scheduled by downlink control information, DCI, to be performed in the first slot, and symbols of the first PUCCH resource overlapping with a symbol indicated as DL by the TDD UL-DL configuration.
  10. The method of claim 9, wherein the second PUCCH resource is an earliest next available PUCCH resource among PUCCH resources related to the SPS configuration.
  11. The method of claim 9, wherein the second PUCCH resource is an earliest available PUCCH resource among PUCCH resources related to SPS configurations for which corresponding HARQ-ACK information is received on the first PUCCH resource.
  12. The method of claim 9, wherein the second PUCCH resource is an earliest next available PUCCH resource among PUCCH resources related to a plurality of SRS configurations provided to the UE.
  13. The method of any one of claims 9 to 12, wherein the first PUCCH resource is provided by a parameter n1PUCCH-AN in the SPS configuration or by a parameter SPS-PUCCH-AN-List.
  14. The method of any one of claims 9 to 13, wherein, based on the first PUCCH resource satisfying the conditions, receiving the HARQ-ACK for the SPS PDSCH reception on the second PUCCH resource comprises: receiving the HARQ-ACK for the SPS PDSCH reception on the second PUCCH resource without the first UCI, and wherein the first UCI is a scheduling request or channel state information report.
  15. A base station, BS, (100, 200) for receiving hybrid automatic repeat request-acknowledgement, HARQ-ACK, from a user equipment, UE, for a wireless communication system, the BS (100, 200) comprising: at least one transceiver (106, 206); at least one processor (102, 202); and at least one computer memory (104, 204) operably connected to the at least one processor (102, 202) and storing instructions that, when executed, cause the at least one processor (102, 202) to perform operations according to any one of claims 9 to 14.

Description

TECHNICAL FIELD The present disclosure relates to a wireless communication system. BACKGROUND ART A variety of technologies, such as machine-to-machine (M2M) communication, machine type communication (MTC), and a variety of devices demanding high data throughput, such as smartphones and tablet personal computers (PCs), have emerged and spread. Accordingly, the volume of data throughput demanded to be processed in a cellular network has rapidly increased. In order to satisfy such rapidly increasing data throughput, carrier aggregation technology or cognitive radio technology for efficiently employing more frequency bands and multiple input multiple output (MIMO) technology or multi-base station (BS) cooperation technology for raising data capacity transmitted on limited frequency resources have been developed. As more and more communication devices have required greater communication capacity, there has been a need for enhanced mobile broadband (eMBB) communication relative to legacy radio access technology (RAT). In addition, massive machine type communication (mMTC) for providing various services at anytime and anywhere by connecting a plurality of devices and objects to each other is one main issue to be considered in next-generation communication. Communication system design considering services/user equipment (UEs) sensitive to reliability and latency is also under discussion. The introduction of next-generation RAT is being discussed in consideration of eMBB communication, mMTC, ultra-reliable and low-latency communication (URLLC), and the like. Document: VIVO: "Other issues for URLLC and UE features", 3GPP DRAFT; R1-1912037, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE; 650, ROUTE DES LUCIOLES; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20191118 - 20191122 9 November 2019 (2019-11-09), XP051823169, Retrieved from the Internet: URL:https://ftp.3gpp.oreg/tsg_ ran/WG1_RL1/TSGR1_99/Docs/ R1-1912037.zip R1-1912037 Other issues for URLLC and UE features.docx, relates to URLLC in 3GPP. DISCLOSURE Technical Problem As new radio communication technology has been introduced, the number of UEs to which a BS should provide services in a prescribed resource region is increasing and the volume of data and control information that the BS transmits/receives to/from the UEs to which the BS provides services is also increasing. Since the amount of resources available to the BS for communication with the UE(s) is limited, a new method for the BS to efficiently receive/transmit uplink/downlink data and/or uplink/downlink control information from/to the UE(s) using the limited radio resources is needed. In other words, due to increase in the density of nodes and/or the density of UEs, a method for efficiently using high-density nodes or high-density UEs for communication is needed. A method to efficiently support various services with different requirements in a wireless communication system is also needed. Overcoming delay or latency is an important challenge to applications, performance of which is sensitive to delay/latency. The objects to be achieved with the present disclosure are not limited to what has been particularly described hereinabove and other objects not described herein will be more clearly understood by persons skilled in the art from the following detailed description. Technical Solution According to an aspect of the present disclosure, provided herein is a method according to claim 1. In another aspect of the present disclosure, provided herein is a user equipment (UE) according to claim 7. In another aspect of the present disclosure, provided herein is a computer readable storage medium according to claim 8. In another aspect of the present disclosure, provided herein is a method according to claim 9. In another aspect of the present disclosure, provided herein is a base station (BS) according to claim 15. Advantageous Effects According to implementation(s) of the present disclosure, a wireless communication signal may be efficiently transmitted/received. Accordingly, the total throughput of a wireless communication system may be raised. According to implementation(s) of the present disclosure, various services with different requirements may be efficiently supported in a wireless communication system. According to implementation(s) of the present disclosure, delay/latency generated during radio communication between communication devices may be reduced. The effects according to the present disclosure are not limited to what has been particularly described hereinabove and other effects not described herein will be more clearly understood by persons skilled in the art related to the present disclosure from the following detailed description. Description of Drawings The accompanying drawings, which are included to provide a further understanding of the present disclosure, illustrate examples of implementations of the present disclosure and together with