Techniques and apparatuses for downlink control channel design using a top to bottom search space

A user equipment (UE) for wireless communication, comprising:

• a memory;
• and
• one or more processors coupled to the memory, the memory and the one or more processors configured to:
• receive a control channel that includes a plurality of candidate samples having at least two aggregation levels;
• scan a set of candidate samples, of the plurality of candidate samples, to identify a relevant sample associated with the UE, wherein the scanning is performed on the set of candidate samples in an order from a higher aggregation level of the at least two aggregation levels to a lower aggregation level of the at least two aggregation levels;
• and
• decode the relevant sample.

A method of wireless communication, comprising:

• generating, by a base station, at least one control signal for at least one user equipment (UE) for transmission in a control channel, wherein the control channel is associated with a plurality of aggregation levels;
• selecting, by the base station, at least one aggregation level, of the plurality of aggregation levels, for the at least one control signal to minimize gaps in the control channel;
• and
• providing, by the base station, the control channel including at least one sample corresponding to the at least one control signal.

A base station for wireless communication, comprising:

• a memory;
• and
• one or more processors coupled to the memory, the memory and the one or more processors configured to:
• generate at least one control signal for at least one user equipment (UE) for transmission in a control channel, wherein the control channel is associated with a plurality of aggregation levels;
• select at least one aggregation level, of the plurality of aggregation levels, for the at least one control signal to minimize gaps in the control channel;
• and
• provide the control channel including at least one sample corresponding to the at least one control signal.