Demodulation reference signal enhancements for control channel repetitions

A method for wireless communications at a network device, comprising:

• transmitting, via a first subset of repetitions of a set of repetitions of control information, a first set of demodulation reference signals and a first instance of the control information;
• and
• transmitting, via a second subset of repetitions of the set of repetitions of the control information, a second set of demodulation reference signals and a second instance of the control information,
• a first set of resource elements allocated for the first set of demodulation reference signals per repetition of the first subset of repetitions comprising additional resource elements compared to a second set of resource elements allocated for the second set of demodulation reference signals per repetition of the second subset of repetitions in accordance with a configuration for reception of the control information via a downlink control channel, and
• the first instance of the control information rate matched around the additional resource elements, or the first set of demodulation reference signals puncturing the additional resource elements, or both.

An apparatus for wireless communications at a user equipment (UE), comprising:

• at least one processor;
• and
• at least one memory coupled with the at least one processor and storing instructions executable by the at least one processor to cause the UE to:
• receive, via a first subset of repetitions of a set of repetitions of control information, a first set of demodulation reference signals and a first instance of the control information;
• and
• receive, via a second subset of repetitions of the set of repetitions of the control information, a second set of demodulation reference signals and a second instance of the control information,
• a first set of resource elements allocated for the first set of demodulation reference signals per repetition of the first subset of repetitions comprising additional resource elements compared to second set of resource elements allocated for the second set of demodulation reference signals per repetition of the second subset of repetitions in accordance with a configuration for reception of the control information via a downlink control channel, and
• the first instance of the control information rate matched around the additional resource elements, or the first set of demodulation reference signals puncturing the additional resource elements, or both,
• wherein the control information is decoded based at least in part on the first set of demodulation reference signals and the second set of demodulation reference signals.

An apparatus for wireless communications at a network device, comprising:

• at least one processor;
• and
• at least one memory coupled with the at least one processor and storing instructions executable by the at least one processor to cause the network device to:
• transmit, via a first subset of repetitions of a set of repetitions of control information, a first set of demodulation reference signals and a first instance of the control information;
• and
• transmit, via a second subset of repetitions of the set of repetitions of the control information, a second set of demodulation reference signals and a second instance of the control information,
• a first set of resource elements allocated for the first set of demodulation reference signals per repetition of the first subset of repetitions comprising additional resource elements compared to a second set of resource elements allocated for the second set of demodulation reference signals per repetition of the second subset of repetitions in accordance with a configuration for reception of the control information via a downlink control channel, and
• the first instance of the control information rate matched around the additional resource elements, or the first set of demodulation reference signals puncturing the additional resource elements, or both.

An apparatus for wireless communications at a user equipment (UE), comprising:

• means for receiving, via a first subset of repetitions of a set of repetitions of control information, a first set of demodulation reference signals and a first instance of the control information;
• and
• means for receiving, via a second subset of repetitions of the set of repetitions of the control information, a second set of demodulation reference signals and a second instance of the control information,
• a first set of resource elements allocated for the first set of demodulation reference signals per repetition of the first subset of repetitions comprising additional resource elements compared to a second set of resource elements allocated for the second set of demodulation reference signals per repetition of the second subset of repetitions in accordance with a configuration for reception of the control information via a downlink control channel, and
• the first instance of the control information rate matched around the additional resource elements, or the first set of demodulation reference signals puncturing the additional resource elements, or both,
• wherein the control information is decoded based at least in part on the first set of demodulation reference signals and the second set of demodulation reference signals.