Ris-based enhanced positioning

The apparatus according to any one of claims 1 to 0, wherein the reference signal configuration comprises configuration using sounding reference signals, and the apparatus comprises:

• receiving sounding reference signals from the user equipment;
• receiving signals comprising sounding reference signals that have been reflected from the one or more reconfigurable intelligent surfaces;
• performing timing estimates based on the received sounding reference signals;
• and
• sending indication of the timing estimates toward a location management element.

The apparatus according to any one of claims 1 to 0, wherein the reference signal configuration comprises configuration using downlink positioning reference signals, and the apparatus comprises:

• sending positioning reference signals toward the user equipment and the one or more reconfigurable intelligent surfaces;
• receiving a timing estimate based on the sent positioning reference signals;
• and
• sending indication of the timing estimate toward a location management element.

An apparatus, comprising means for performing:

• receiving, by a user equipment from a base station, a reference signal configuration for using one or more reconfigurable intelligent surfaces for positioning purposes;
• receiving by the user equipment reference signals, based on the reference signal configuration, from the base station;
• receiving, by the user equipment, signals comprising reference signals that have been reflected from the one or more reconfigurable intelligent surfaces;
• performing by the user equipment timing estimates based on the received reference signals and the received signals reflected from the one or more reconfigurable intelligent surfaces;
• and
• sending by the user equipment indication of the timing estimates toward the base station.

An apparatus, comprising means for performing:

• receiving, at a reconfigurable intelligent surface, signals comprising reference signals to be used for positioning purposes for a user equipment;
• time stamping the signals comprising the reference signals;
• and
• reflecting signals comprising the reference signals and corresponding time stamps.