Small delay cyclic delay diversity for data or control channels

A user equipment (UE), comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:
• receive a first control message indicating a plurality of candidate delay values associated with a small delay cyclic delay diversity (CDD) scheme for a channel;
• receive a second control message indicating, for a scheduled message, a delay value of the plurality of candidate delay values that is applied for the scheduled message;
• perform channel estimation for the channel in accordance with one or more delay spread values associated with a multi-path profile of the channel, wherein the one or more delay spread values are based at least in part on the delay value that is applied for the scheduled message;
• and
• receive the scheduled message based at least in part on performing the channel estimation.

A network entity, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the network entity to:
• select a first set of candidate delay values from a plurality of candidate delay values based at least in part on a frequency band associated with a broadcast channel;
• obtain a first delay value associated with a small delay cyclic delay diversity (CDD) scheme for the broadcast channel, wherein the first delay value is in the first set of candidate delay values;
• output an indication of the first delay value, wherein the first delay value is associated with channel estimation for the broadcast channel in accordance with one or more delay spread values associated with a multi-path profile of the broadcast channel, and wherein the one or more delay spread values are based at least in part on the first delay value associated with the small delay CDD scheme;
• and
• output a message via the broadcast channel based at least in part on outputting the indication of the first delay value.

A network entity, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the network entity to:
• output a first control message indicating a plurality of candidate delay values associated with a small delay cyclic delay diversity (CDD) scheme for a channel;
• output a second control message indicating, for a scheduled message, a delay value of the plurality of candidate delay values that is applied for the scheduled message;
• and
• output the scheduled message based at least in part on outputting the second control message.