Acknowledgement mechanisms for uplink low latency communications

A method for wireless communication, comprising:

• receiving, by a user equipment (UE) of a first service type, an assignment of an acknowledgement resource, the acknowledgement resource comprising a shared downlink data channel resource available for a downlink data transmission to one or more other UEs of a second service type different from the first service type, wherein the first service type is associated with a first latency requirement for data communication that has a latency requirement different from a second latency requirement for data communication with which the second service type is associated;
• transmitting a grant-free uplink transmission;
• monitoring the acknowledgement resource for an acknowledgement of the grant-free uplink transmission;
• and
• receiving, from a base station via the acknowledgement resource, the acknowledgement of the grant-free uplink transmission, the acknowledgement puncturing the downlink data transmission to the one or more other UEs of the second service type.

A method for wireless communication at a user equipment (UE) of a second service type different from a first service type, comprising:

• receiving, by the UE of the second service type, an assignment for a shared downlink data channel resource, the shared downlink data channel resource also assigned to at least one other UE of the first service type as an acknowledgement resource, wherein the first service type is associated with a first latency requirement for data communication that has a latency requirement different from a second latency requirement for data communication with which the second service type is associated;
• receiving a data transmission on the shared downlink data channel resource;
• receiving an indication that data intended for the UE of the second service type was punctured by the received data transmission;
• and
• receiving a subsequent transmission comprising the punctured data.

An apparatus for wireless communication, comprising:

• a processor;
• memory coupled to the processor;
• and
• instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
• receive, by a user equipment (UE) of a first service type, an assignment of an acknowledgement resource, the acknowledgement resource comprising a shared downlink data channel resource available for a downlink data transmission to one or more other UEs of a second service type different from the first service type, wherein the first service type is associated with a first latency requirement for data communication that has a latency requirement different from a second latency requirement for data communication with which the second service type is associated;
• transmit a grant-free uplink transmission;
• monitor the acknowledgement resource for an acknowledgement of the grant-free uplink transmission;
• and
• receive, from a base station via the acknowledgement resource, the acknowledgement of the grant-free uplink transmission, the acknowledgement puncturing the downlink data transmission to the one or more other UEs of the second service type.