Systems and methods for control signaling for beam searching latency reduction

A method of a user equipment (UE) for beam latency reduction, comprising:

• receiving a correlation message from a base station, the correlation message comprising spatial correlation information indicating that a first Synchronization Signal Block (SSB) transmitted by an assistant Transmission Reception Point (TRP) and a second SSB transmitted by the assistant TRP are spatially correlated;
• determining that the first SSB and the second SSB are spatially correlated based on the spatial correlation information;
• measuring the first SSB with a first subset of receive (Rx) beams of a plurality of Rx beams;
• measuring the second SSB with a second subset of Rx beams of the plurality of Rx beams;
• and
• selecting an Rx beam for both the first SSB and the second SSB based on the measurements of the first subset of the plurality of Rx beams and the second subset of the plurality of Rx beams.

An apparatus of a user equipment (UE), comprising:

• one or more processors;
• and
• a memory storing instructions that, when executed by the one or more processors, configure the UE to:
• receive a correlation message from a base station, the correlation message comprising spatial correlation information indicating that a first Synchronization Signal Block (SSB) transmitted by an assistant Transmission Reception Point (TRP) and a second SSB transmitted by the assistant TRP are spatially correlated;
• determine that the first SSB and the second SSB are spatially correlated based on the spatial correlation information;
• measure the first SSB with a first subset of receive (Rx) beams of a plurality of Rx beams;
• measure the second SSB with a second subset of Rx beams of the plurality of Rx beams;
• and
• select an Rx beam for both the first SSB and the second SSB based on the measurements of the first subset of the plurality of Rx beams and the second subset of the plurality of Rx beams.