Methods and apparatuses for reduction of interference during positioning measurements
The exemplary embodiments of the present invention relate to methods and apparatuses enabling reduction of interference in a wireless system in order to assist a user equipment in performing positioning measurements. According to exemplary embodiments of the present invention, a radio network node is configured to: receive a measurement report from the UE comprising signal quality measurements related to interfering cells; to select a set of most interfering cells and to determine a level of reduction of transmission activity to be executed at specific time for a determined duration.
1. A method in a user equipment, for performing positioning measurements using a signal received from an interfering cell, the method comprising:
measuring positioning information using a first occasion of a positioning reference signal (PRS) received from a cell;
attempting to measure a second occasion of the PRS;
detecting an absence of the second occasion of the PRS, the absence of the second occasion of the PRS indicative of a reduction in transmission activity from the cell; and
in response to detecting the absence of the PRS, measuring positioning information using a cell-specific reference signal (CRS) before a next occasion of the PRS.
2. The method of claim 1 , comprising aggregating positioning information measured using the PRS with positioning information measured using the CRS.
3. A user equipment, configured to perform positioning measurements using a signal received from an interfering cell, comprising:
a measuring circuit, configured to measure positioning information using a positioning reference signal (PRS) received from a cell and using a cell-specific reference signal (CRS) received from the cell;
a detection circuit configured to detect an absence of the PRS, the absence of the PRS indicative of a reduction in transmission activity from the cell; and
a switching circuit configured to switch from measuring positioning information using the PRS, to measuring positioning information using the CRS, the switching occurring upon detecting the absence of the PRS and before a next occasion of the PRS.
4. The user equipment of claim 3 , the measuring circuit configured to aggregate positioning information measured using the PRS with positioning information measured using the CRS.