Search space overbooking and pruning

A method for wireless communication at a base station, comprising:

• identifying, for a control region of a control channel, one or more sets of decoding candidates associated with one or more search space sets;
• determining a total number of available control channel elements (CCEs) for the one or more search space sets based at least in part on a CCE channel estimation limitation;
• determining respective numbers of available CCEs for the one or more search space sets based at least in part on the total number of available CCEs;
• determining an applied one or more sets of decoding candidates by hashing a first subset of the one or more sets of decoding candidates to a first subset of CCEs of the control region based at least in part on the number of available CCEs, and admitting a second subset of the one or more sets of decoding candidates having hashed locations overlapping with the first subset of CCEs;
• and
• transmitting control information to the UE via the control channel.

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

• a processor,
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• identify, for a control region of a control channel, one or more sets of decoding candidates associated with one or more search space sets;
• determine a total number of available control channel elements (CCEs) for the one or more search space sets based at least in part on a CCE channel estimation limitation;
• determine respective numbers of available CCEs for the one or more search space sets based at least in part on the total number of available CCEs;
• determine an applied one or more sets of decoding candidates by hashing a first subset of the one or more sets of decoding candidates to a first subset of CCEs of the control region based at least in part on the respective numbers of available CCEs, and admitting a second subset of the one or more sets of decoding candidates having hashed locations overlapping with the first subset of CCEs;
• and
• monitor the control region for the applied one or more sets of decoding candidates.

An apparatus for wireless communication at a base station, comprising:

• a processor,
• memory in electronic communication with the processor;
• and
• instructions stored in the memory and executable by the processor to cause the apparatus to:
• identify, for a control region of a control channel, one or more sets of decoding candidates associated with one or more search space sets;
• determine a total number of available control channel elements (CCEs) for the one or more search space sets based at least in part on a CCE channel estimation limitation;
• determine respective numbers of available CCEs for the one or more search space sets based at least in part on the total number of available CCEs;
• determine an applied one or more sets of decoding candidates by hashing a first subset of the one or more sets of decoding candidates to a first subset of CCEs of the control region based at least in part on the number of available CCEs, and admitting a second subset of the one or more sets of decoding candidates having hashed locations overlapping with the first subset of CCEs;
• and
• transmit control information to the UE via the control channel.