BACKGROUND

A base station sends a message, indicating an uplink grant, to a wireless device. The wireless device uses an uplink grant to send a message to the base station.

SUMMARY

The following summary presents a simplified summary of certain features. The summary is not an extensive overview and is not intended to identify key or critical elements.

Systems, methods, and apparatuses for wireless communications are described. Transmissions from a wireless device may be cancelled/delayed to enable the wireless device to send another transmission (e.g., for more urgent communications, higher priority service, etc.). A base station may send an indication (e.g., a pre-emption indication) to the wireless device indicating that the wireless device is to pre-empt (e.g., cancel and/or delay) a transmission (e.g., a scheduled transmission based on an uplink grant). Cancelling the pre-empted transmission may result in misalignment between the wireless device and the base station, wherein the base station may not know whether the wireless device may operate as if the cancelled transmission has been sent to the base station, not sent to the base station, and/or sent/not sent based on one or more criteria. Based on receiving the pre-emption indication, the wireless device may reduce the likelihood of such misalignment, for example, by cancelling the pre-empted transmission, storing an indication associated with the pre-empted transmission, and/or storing information (e.g., data, message, scheduled transmission, etc.) associated with the pre-empted transmission. The examples described herein may result in advantages such as enabling higher uplink throughput, higher energy efficiency, and/or reduced transmission latency (e.g., for transmission of a pre-empted transmission at the later time).

These and other features and advantages are described in greater detail below.

