QUALCOMM Incorporated
Transport block repetition handling for downlink and uplink transmissions

Abstract:

Methods, systems, and devices for wireless communications are described. In some systems, devices may implement transmission repetitions for transport blocks (TBs) to improve reception reliability. To support low latency, TBs may be transmitted in any transmission time interval (TTI) or mini-slot within a subframe or slot. The systems may implement processes to handle these TB repetitions near slot or subframe boundaries. For example, different resources in time for an initial TB transmission may correspond to different numbers of repetitions to avoid crossing defined boundaries. In some cases, TB transmission parameters, numbers of repetitions, or both may be modified based on a repetition window spanning multiple slots or subframes. A base station may transmit a grant indicating the initial resource in time, and a user equipment (UE) may determine the number of transmission repetitions for a TB based on a proximity of the initial resource in time to a defined boundary.