Dynamic configuration of aperiodic sounding reference signal offsets in cellular communications systems

A method, comprising:

• by a base station (BS):
• determining an aperiodic sounding reference signal (SRS) triggering offset for a user equipment (UE), wherein the aperiodic SRS triggering offset is based on a minimum timing offset received from the UE and specifies a timing offset between an aperiodic SRS trigger received by the UE in a downlink control information (DCI) message and transmission of the SRS by the UE in response to the aperiodic SRS trigger;
• transmitting an initial set of aperiodic SRS triggering offset values for an SRS resource set to the UE via radio resource control (RRC) signaling;
• and
• transmitting the DCI message to the UE specifying one offset value from the initial set of aperiodic SRS triggering offset values.

A processor configured to:

• transmit, to a base station (BS), a minimum timing offset of a user equipment (UE);
• receive an initial set of aperiodic sounding reference signal (SRS) triggering offset values for an SRS resource set from the BS via radio resource control (RRC) signaling;
• receive a downlink control information (DCI) message from the BS specifying one value from the initial set of aperiodic SRS triggering offset values, wherein the one value is based on the minimum timing offset received from the UE;
• receive an aperiodic SRS trigger from the BS in the DCI message;
• and,
• transmit an aperiodic SRS based on the received aperiodic SRS trigger, wherein the aperiodic SRS is transmitted in a time slot based at least in part on the one value specified from the initial set of aperiodic SRS triggering offset values.