V2X transmission candidate resource determination method and device, storage medium and user equipment

Abstract

The invention discloses a V2X transmission candidate resource determination method and device, a storage medium and user equipment. The V2X transmission candidate resource determination method comprises the steps of determining a to-be-sent data packet from a high level; determining an unmonitored sub-frame of the current user equipment in the sensing window or the contention window; receiving anSCI-R from first user equipment in a short sensing window or a contention window in the sensing window, wherein the SCI-R comprises SCI-R information sent by other user equipment and sensed by the first user equipment; and determining occupied resources at least according to the SCI-R information and the positions of the unmonitored subframes, excluding the occupied resources from the resource selection window, and remaining resources in the resource selection window are candidate resources of the to-be-sent data packet. According to the technical scheme, data transmission resource collision caused by a half-duplex problem in an NR V2X scene can be avoided.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method and device for determining V2X transmission candidate resources, a storage medium, and user equipment. Background technique [0002] In the long-term evolution (Long Term Evolution, LTE) system, the vehicle-to-everything (V2X) system only supports periodic transmission services, and the sensing process in the resource selection process of LTE-V2X is designed based on the characteristics of periodic transmission. However, NR V2X supports both periodic transmission services and aperiodic transmission services, which makes the perception-based resource selection method in LTE-V2X no longer applicable, so a new resource selection scheme needs to be designed. [0003] A new agreement (agreement) was reached at the RAN1#95 meeting of 3GPP, including the study of information obtained from sidelink control indicator (SCI) decoding and sidelink (sidelink) rel...

AI Technical Summary

Problems solved by technology

[0004] However, in the NR V2X scenario, there will be half-duplex problems in aperiodic transmission

For example, UE A sends data at a half-duplex subframe. Due to the half-duplex problem, UE A will not be able to receive resources sent by other UEs at this time. If other UE B happens to send aperiodic transmission on this subframe at this time SCI-R, then UE A will not be able to exclude the resources occupied by UE B in the resource selection window, and resource collisions may occur

In the first part of the resource selection window, that is, in the contention window, if two UEs happen to send SCI-R for aperiodic transmission on the same subframe, a half-duplex problem will also occur at this time, and the UE cannot decode other SCI-R sent by UE to avoid collision of DATA transmission resources

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