Uplink preemption in carrier aggregation/multi-connectivity mode

A user equipment, comprising:

• one or memories storing computer executable code;
• and
• one or more processors configured to, individually or collectively, execute the computer executable code and cause the user equipment to:
• communicate, to a base station, a capability of the user equipment to transmit on a band when transmission on another band is preempted;
• receive a resource assignment scheduling the user equipment for uplink transmission;
• receive an indication to drop the uplink transmission on a portion of the assigned resources, wherein the indication to drop the uplink transmission includes an indication of at least one symbol and an indication of one or more cells in which to drop the uplink transmission;
• transmit an uplink reference signal on other symbols subsequent the at least one symbol;
• and
• drop an uplink transmission different than the uplink reference signal in the other symbols subsequent the at least one symbol.

An apparatus for wireless communications, the apparatus comprising:

• means for communicating, to a base station, a capability of the apparatus to transmit on a band when transmission on another band is preempted;
• means for receiving a resource assignment scheduling the apparatus for uplink transmission;
• means for receiving an indication to drop the uplink transmission on a portion of the assigned resources, wherein the indication to drop the uplink transmission includes an indication of at least one symbol and an indication of one or more cells in which to drop the uplink transmission;
• means for transmitting an uplink reference signal on other symbols subsequent the at least one symbol;
• and
• means for dropping an uplink transmission different than the uplink reference signal in the other symbols subsequent the at least one symbol.

A non-transitory computer-readable medium comprising computer-executable instructions that, when executed by a processor of a user equipment, cause the user equipment to:

• communicate, to a base station, a capability of the user equipment to transmit on a band when transmission on another band is preempted;
• receive a resource assignment scheduling the user equipment for uplink transmission;
• receive an indication to drop the uplink transmission on a portion of the assigned resources, wherein the indication to drop the uplink transmission includes an indication of at least one symbol and an indication of one or more cells in which to drop the uplink transmission;
• transmit an uplink reference signal on other symbols subsequent the at least one symbol;
• and
• drop an uplink transmission different than the uplink reference signal in the other symbols subsequent the at least one symbol.