Transmission configuration indication (TCI) state and beam switching

A method for changing a Transmission Configuration Indication (TCI) state, by a user equipment (UE), the method comprising:

• receiving a first message including a TCI state change command from a network;
• determining, based on the first message, whether a time offset/frequency offset (TO/FO) and a reception (Rx) beam for a new TCI state are known by the UE;
• calculating, based on the determination, a time delay of the UE to be prepared to receive a reference signal associated with the new TCI state, and
• generating a second message indicating the time delay to be prepared to receive the reference signal associated with the new TCI state;
• and
• transmitting the second message to the network.

A non-transitory computer-readable media comprising instructions to cause a user equipment (UE), upon execution of the instructions by one or more processors of the UE, to perform operations comprising:

• receiving a first message including a transmission configuration indication (TCI) state change command from a network;
• determining, based on the first message, whether a time offset/frequency offset (TO/FO) and a reception (Rx) beam for a new TCI state are known by the UE;
• calculating, based on the determination, a time delay of the UE to be prepared to receive a reference signal associated with the new TCI state;
• generating a second message indicating the time delay to be prepared to receive the reference signal associated with the new TCI state;
• and
• transmitting the second message to the network.