Methods and apparatus for supporting transmission bursts

A user equipment (UE) device comprising:

• a receiver;
• and
• a processor configured to:
• operate the user equipment (UE) device to:
• receive from a base station information relating to communications channel usage, said information including reference signal information indicating time and frequency resources used for different sub-band occupancies;
• determine which sub-bands of a downlink (DL) band being used by the UE device are occupied, said determination being a sub-band occupancy determination where a sub-band occupancy indicates which sub-bands of a communications band are being used to communicate with the UE device;
• and
• determine channel state information—reference signal (CSI-RS) measurement locations based on the determined sub-band occupancy.

A non-transitory computer readable medium including computer executable instructions which when executed by a processor control a user equipment (UE) device using unlicensed spectrum to perform the steps of:

• operating the UE device to receive from a base station information relating to communications channel usage, said information including reference signal information indicating time and frequency resources used for different sub-band occupancies;
• operating the UE device to determine which sub-bands of a downlink (DL) band being used by the UE device are occupied, said determination being a sub-band occupancy determination where a sub-band occupancy indicates which sub-bands of a communications band are being used to communicate with the UE device;
• and
• operating the UE device to determine channel state information-reference signal (CSI-RS) measurement locations based on the determined sub-band occupancy.