Reporting positioning measurements
Apparatuses, methods, and systems are disclosed for reporting positioning measurements. One method includes receiving positioning measurement configuration information including: a list of candidate beams, wherein each candidate beam of the list of candidate beams is associated with a positioning reference signal; a priority indicator; a temporal switching criteria; and/or a reporting criteria for positioning. The reporting criteria includes a positioning reference signal received power, a non-line-of-sight measurement indicator, a line-of-sight measurement indicator, and/or a reporting priority for each candidate beam of the list of candidate beams. The method includes measuring a positioning reference signal associated with each candidate beam of the list of candidate beams based on an associated positioning reference signal configuration. The method includes reporting positioning measurements based on the reporting criteria for at least one candidate beam of the list of candidate beams.
1 . A method performed by a user equipment (UE), the method comprising:
receiving positioning measurement configuration information, wherein receiving the positioning measurement configuration information comprises:
receiving a list of candidate beams, wherein each candidate beam of the list of candidate beams is associated with a positioning reference signal (PRS);
receiving a priority indicator; and
receiving a reporting criteria for positioning comprising a non-line-of-sight (non-LOS) measurement indicator, a line-of-sight (LOS) measurement indicator, and a reporting priority for each candidate beam of the list of candidate beams;
measuring a PRS associated with each candidate beam of the list of candidate beams based on an associated PRS configuration; and
reporting positioning measurements based on the reporting criteria for at least one candidate beam of the list of candidate beams.
2 . The method of claim 1 , further comprising receiving the positioning measurement configuration information from a location server via a long term evolution (LTE) positioning protocol.
3 . The method of claim 1 , further comprising retrieving the positioning measurement configuration information from a stored preconfigured information set.
4 . The method of claim 1 , wherein the reporting priority is associated with one or more of a downlink positioning-related signal, an uplink positioning-related signal, a downlink positioning-related signal identifier, an uplink positioning-related signal identifier, a PRS identifier, a sounding reference signal (SRS) identifier, a PRS resource set, a SRS resource set, or a transmission and reception point (TRP) identifier (ID).
5 . The method of claim 1 , further comprising selecting a beam for reporting from the list of candidate beams based on a temporal switching criteria.
6 . The method of claim 5 , wherein the beam for reporting comprises a beam from a transmission and reception (TRP) point within a set of TRPs distinct from a currently received beam, and each TRP of the set of TRPs maps to a priority indication.
7 . The method of claim 1 , wherein the reporting priority comprises a network configured priority transmitted as assistance data by a location server using a long term evolution (LTE) positioning protocol.
8 . The method of claim 1 , wherein the positioning measurement configuration information is associated with a prior initiation of a location request or a long term evolution (LTE) positioning protocol session.
9 . The method of claim 1 , further comprising transmitting the list of candidate beams to a location server as assistance information, wherein the list of candidate beams comprises at least one candidate beam related PRS measurement, the at least one candidate beam related PRS measurement comprises one or more of a PRS received power, a non-LOS measurement indicator, or a LOS measurement indicator.
10 . A method performed by a user equipment (UE), the method comprising:
receiving positioning measurement configuration information, wherein receiving the positioning measurement configuration information comprises:
receiving a list of candidate beams, wherein each candidate beam of the list of candidate beams is associated with a positioning reference signal (PRS);
receiving a priority indicator; and
receiving a reporting criteria for positioning comprising a non-line-of-sight (non-LOS) measurement indicator, a line-of-sight (LOS) measurement indicator, and a reporting priority for each candidate beam of the list of candidate beams;
measuring a PRS of each candidate beam of a list of candidate beams based on the positioning measurement configuration information;
receiving a line-of-sight (LOS) reporting criteria or a non-line-of-sight (non-LOS) reporting criteria;
classifying the PRS measurement as non-LOS or LOS;
reporting the PRS measurement of at least one beam of the list of candidate beams, wherein the reported PRS measurement is based on the LOS reporting criteria or the non-LOS reporting criteria; and
reselecting a beam of the list of candidate beams based on the PRS measurement for performing positioning.
11 . The method of claim 10 , further comprising classifying the PRS measurement as LOS or non-LOS based on a received metric distinguishing LOS or non-LOS beam PRS measurement.
12 . The method of claim 11 , wherein the PRS measurement comprises one or more of a received signal power, features extracted from a channel power delay profile, a received signal phase difference between antenna ports, a time-of-arrival, or a pathloss measurement.
13 . The method of claim 10 , further comprising reporting at least one non-LOS beam or at least one LOS beam associated with the PRS measurement.
14 . The method of claim 10 , wherein classifying the PRS measurement comprises determining a non-LOS beam or a LOS beam based on a predetermined time interval.
15 . The method of claim 14 , wherein the predetermined time interval comprises a short-term change in a radio environment, a medium-term change in the radio environment, or a long-term change in the radio environment.
16 . The method of claim 14 , wherein the predetermined time interval is one or more of activated via a physical layer, configured via radio resource control (RRC) signaling, or a long term evolution (LTE) positioning protocol.
17 . The method of claim 10 , wherein classifying the PRS measurement comprises determining a non-LOS beam or a LOS beam based on one or more of a predetermined function or a predetermined threshold.
18 . The method of claim 17 , wherein the predetermined function comprises one or more of a signal standard deviation, a signal mean, a signal kurtosis, a skewness, a Rician K-factor, or a goodness of fit.
19 . The method of claim 17 , wherein the predetermined threshold comprises one or more of a hypothesis test, a root mean square delay spread, an amplitude, or a range estimate.
20 . The method of claim 10 , wherein reporting the PRS measurement of the at least one beam comprises one or more of reporting a set of LOS only measurement indicators or a set of non-LOS only measurement indicators.