Method and apparatus for receiving downlink data in a wireless communication system

A method of a User Equipment (UE), the method comprising:

• monitoring a first Control Resource Set (CORESET), via a first spatial Quasi-Colocation (QCL) assumption associated with a first Transmission Configuration Indicator (TCI) state, on a first monitoring occasion, wherein a first Physical Downlink Control Channel (PDCCH) is associated with the first CORESET;
• monitoring a second CORESET, via a second spatial QCL assumption associated with a second TCI state, on a second monitoring occasion, wherein:
• a second PDCCH is associated with the second CORESET;
• the first PDCCH schedules a Physical Downlink Shared Channel (PDSCH);
• and
• the second PDCCH schedules the PDSCH;
• determining an interval between a last orthogonal frequency-division multiplexing (OFDM) symbol of a reference monitoring occasion and a starting OFDM symbol of the PDSCH, wherein the reference monitoring occasion is a last monitoring occasion of the first monitoring occasion and the second monitoring occasion;
• and
• based on the interval being larger than or equal to a threshold, receiving the PDSCH via a third spatial QCL assumption associated with a third TCI state, wherein the third TCI state is determined based on a lowest CORESET identity of a first CORESET identity of the first CORESET and a second CORESET identity of the second CORESET.

A User Equipment (UE), comprising:

• a control circuit;
• a processor installed in the control circuit;
• and
• a memory installed in the control circuit and operatively coupled to the processor, wherein the processor is configured to execute a program code stored in the memory to perform operations, the operations comprising:
• monitoring a first Physical Downlink Control Channel (PDCCH), via a first spatial Quasi-Colocation (QCL) assumption associated with a first Transmission Configuration Indicator (TCI) state, on a first monitoring occasion of a first Control Resource Set (CORESET);
• monitoring a second PDCCH, via a second spatial QCL assumption associated with a second TCI state, on a second monitoring occasion of a second CORESET;
• determining an interval between a last orthogonal frequency-division multiplexing (OFDM) symbol of a reference monitoring occasion and a starting OFDM symbol of a scheduled Physical Downlink Shared Channel (PDSCH), wherein the reference monitoring occasion is a last monitoring occasion of the first monitoring occasion and the second monitoring occasion;
• and
• based on the interval being larger than or equal to a threshold, receiving the scheduled PDSCH via a third spatial QCL assumption associated with a third TCI state, wherein the third TCI state is determined based on a lowest CORESET identity of a first CORESET identity of the first CORESET and a second CORESET identity of the second CORESET.