Data transmission method, apparatus, and user equipment

Abstract

The present disclosure relates to a data transmission method, apparatus, and user equipment. The method includes: receiving, by a base station, a transmission direction of a time domain symbol indicated by a slot mode indication information by using a group general physical downlink control channel; determining, according to a transmission direction of the time domain symbol, a transmission time-frequency resource in which a transmission direction conflict occurs, and transmitting a time-frequency resource The time-frequency resource in the uplink-free scheduling resource period allocated to the base station; when the number of transmission time-frequency resources in the transmission direction conflict is less than a preset value, determining available time-frequency resources that can beused for transmitting uplink data in the resource period; The uplink data is transmitted on the available time-frequency resources. The technical solution of the present disclosure can implement thatthe user equipment can make reasonable data transmission decisions for the number and location of conflicting time-frequency resources in the GF resource period, so as to achieve the reliability of data transmission and the balance of delay in the GF resource period.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular, to a data transmission method, device and user equipment. Background technique [0002] In the research and discussion of the fifth generation mobile communication technology (5th Generation, 5G for short) project, in order to support Ultra Reliable & Low Latency Communication (URLLC for short), New Radio (New Radio, NR for short) system proposes an uplink data (Uplink grant free, UL GF for short) transmission scheme not based on uplink scheduling. In UL GF transmission, NR supports the same physical layer in the same GF resource cycle The transmission block is repeatedly transmitted K times (K is a natural number greater than 1), and the base station can configure K transmission time-frequency resources for K times of repeated transmissions for the user equipment, and configure the time-frequency resources for transmitting data on each transmission time-frequ...

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Problems solved by technology

[0003] In the related art, in UL GF transmission, if the transmission direction on the time-domain symbol where the K transmission time-frequency resources configured by the base station for the user is dynamically passed through the group common Physical Downlink Control Channel (group common PhysicalDownlink Control Channel, referred to as If the slot format indication (SlotFormatIndication, referred to as SFI) of the group common PDCCH is downlink (Downlink, referred to as DL) or unknown (unknown), it may cause conflicts in the transmission direction of some transmission time-frequency resources, so it is necessary to propose a A new UL GF transmission scheme to solve the problem of data transmission within the GF resource period when there is a conflict between transmission time-frequency resources and the transmission direction indicated by the group common PDCCH SFI in the GF resource period

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