Closed loop feedback for improved positioning
Disclosed are systems, methods, and non-transitory media for improving user equipment (UE) positioning. In some aspects, UE positioning improvements are facilitated by a location server, such as a Location Management Function (LMF) that receives location measurements from the UE and transmits back a feedback messaging, that can be used to modify transmission of subsequent location measurements to the location server.
1 . An apparatus for reporting location measurements, the apparatus comprising:
at least one transceiver;
at least one memory; and
at least one processor coupled to the at least one transceiver and the at least one memory and configured to:
transmit, via the at least one transceiver, a first set of location measurements to a server;
receive, via the at least one transceiver, a feedback message from the server based on the first set of location measurements, wherein the feedback message comprises information indicating a number of requested location measurements from a particular transmission-reception point (TRP); and
transmit, via the at least one transceiver, a second set of location measurements to the server based on the feedback message.
2 . The apparatus of claim 1 , wherein the second set of location measurements comprises one or more measurements computed based on one or more of: a Positioning Reference Signal (PRS), or a Sounding Reference Signal (SRS), or a combination thereof.
3 . The apparatus of claim 2 , wherein the feedback message comprises identifier data identifying one or more resources associated with the PRS or the SRS for which reporting is to be suppressed, or a combination thereof.
4 . The apparatus of claim 1 , wherein the feedback message comprises information requesting a reduced transmission of one or more location measurements for a predetermined time.
5 . The apparatus of claim 1 , wherein the feedback message comprises information requesting a reduced transmission of a predetermined number of measurements in the second set of location measurements.
6 . The apparatus of claim 1 , wherein the feedback message comprises information requesting a change to a periodicity of location measurement reporting.
7 . The apparatus of claim 1 , wherein the feedback message further comprises information indicating.
8 . The apparatus of claim 1 , wherein the feedback message is based on a number of the first set of location measurements exceeding a predetermined threshold.
9 . The apparatus of claim 1 , wherein the feedback message is based on one or more of: a Signal to Noise Ratio (SNR) metric, a Non-line of Sight (NLOS) metric for the first set of location measurements, a distance traveled metric, or an in-view status of a Transmission Receive Point, or a combination thereof.
10 . The apparatus of claim 1 , wherein the first set of location measurements is different from the second set of location measurements.
11 . The apparatus of claim 1 , wherein the first set of location measurements is transmitted to the server via a low-layer protocol.
12 . The apparatus of claim 1 , wherein a prioritization of the first set of location measurements is different from a prioritization of the second set of location measurements.
13 . The apparatus of claim 1 , wherein the feedback message comprises information requesting additional information for one or more specified measurements selected from among the second set of location measurements.
14 . The apparatus of claim 13 , wherein the additional information comprises one or more of: path information, an angle of arrival (AoA), an angle of departure (AoD), a Round Trip Time (RTT), a time delay calibration value, a Signal to Noise Ratio (SNR), a Signal-to-interference-plus Noise Ratio (SINR), a line-of-sight (LOS) probability, or a combination thereof.
15 . A computer-implemented method for reporting location measurements, comprising:
transmitting a first set of location measurements to a server;
receiving a feedback message from the server based on the first set of location measurements, wherein the feedback message comprises information indicating a number of requested location measurements from a particular transmission-reception point (TRP); and
transmitting a second set of location measurements to the server based on the feedback message.
16 . The computer-implemented method of claim 15 , wherein the second set of location measurements comprises one or more measurements computed based on one or more of: a Positioning Reference Signal (PRS), or a Sounding Reference Signal (SRS), or a combination thereof.
17 . The computer-implemented method of claim 16 , wherein the feedback message comprises identifier data identifying one or more resources associated with the PRS or the SRS for which reporting is to be suppressed, or a combination thereof.
18 . The computer-implemented method of claim 15 , wherein the feedback message comprises information requesting a reduced transmission of one or more location measurements for a predetermined time.
19 . The computer-implemented method of claim 15 , wherein the feedback message comprises information requesting a reduced transmission of a predetermined number of measurements in the second set of location measurements.
20 . The computer-implemented method of claim 15 , wherein the feedback message comprises information requesting a change to a periodicity of location measurement reporting.
21 . The computer-implemented method of claim 15 , wherein the feedback message further comprises information indicating.
22 . The computer-implemented method of claim 15 , wherein the feedback message is based on a number of the first set of location measurements exceeding a predetermined threshold.
23 . The computer-implemented method of claim 15 , wherein the feedback message is based on one or more of: a Signal to Noise Ratio (SNR) metric, a Non-line of Sight (NLOS) metric for the first set of location measurements, a distance traveled metric, or an in-view status of a Transmission Receive Point, or a combination thereof.
24 . The computer-implemented method of claim 15 , wherein the first set of location measurements is different from the second set of location measurements.
25 . The computer-implemented method of claim 15 , wherein the first set of location measurements is transmitted to the server via a low-layer protocol.
26 . The computer-implemented method of claim 15 , wherein a prioritization of the first set of location measurements is different from a prioritization of the second set of location measurements.
27 . The computer-implemented method of claim 15 , wherein the feedback message comprises information requesting additional information for one or more specified measurements selected from among the second set of location measurements.
28 . The computer-implemented method of claim 27 , wherein the additional information comprises one or more of: path information, an angle of arrival (AoA), an angle of departure (AoD), a Round Trip Time (RTT), a time delay calibration value, a Signal to Noise Ratio (SNR), a Signal-to-interference-plus Noise Ratio (SINR), a line-of-sight (LOS) probability, or a combination thereof.
29 . An apparatus for reporting location measurements, the apparatus comprising:
means for transmitting a first set of location measurements to a server;
means for receiving a feedback message from the server based on the first set of location measurements, wherein the feedback message comprises information indicating a number of requested location measurements from a particular transmission-reception point (TRP); and
means for transmitting a second set of location measurements to the server based on the feedback message.
30 . The apparatus of claim 29 , wherein the second set of location measurements comprises one or more measurements computed based on one or more of: a Positioning Reference Signal (PRS), or a Sounding Reference Signal (SRS), or a combination thereof.
31 . The apparatus of claim 30 , wherein the feedback message comprises identifier data identifying one or more resources associated with the PRS or the SRS for which reporting is to be suppressed, or a combination thereof.
32 . The apparatus of claim 29 , wherein the feedback message comprises information requesting a reduced transmission of one or more location measurements for a predetermined time.
33 . The apparatus of claim 29 , wherein the feedback message comprises information requesting a reduced transmission of a predetermined number of measurements in the second set of location measurements.
34 . The apparatus of claim 29 , wherein the feedback message comprises information requesting a change to a periodicity of location measurement reporting.
35 . The apparatus of claim 29 , wherein the feedback message comprises information indicating.
36 . The apparatus of claim 29 , wherein the feedback message is based on a number of the first set of location measurements exceeding a predetermined threshold.
37 . The apparatus of claim 29 , wherein the feedback message is based on one or more of: a Signal to Noise Ratio (SNR) metric, a Non-line of Sight (NLOS) metric for the first set of location measurements, a distance traveled metric, or an in-view status of a Transmission Receive Point, or a combination thereof.
38 . The apparatus of claim 29 , wherein the first set of location measurements is different from the second set of location measurements.
39 . The apparatus of claim 29 , wherein the first set of location measurements is transmitted to the server via a low-layer protocol.
40 . The apparatus of claim 29 , wherein a prioritization of the first set of location measurements is different from a prioritization of the second set of location measurements.
41 . The apparatus of claim 29 , wherein the feedback message comprises information requesting additional information for one or more specified measurements selected from among the second set of location measurements.
42 . The apparatus of claim 41 , wherein the additional information comprises one or more of: path information, an angle of arrival (AoA), an angle of departure (AoD), a Round Trip Time (RTT), a time delay calibration value, a Signal to Noise Ratio (SNR), a Signal-to-interference-plus Noise Ratio (SINR), a line-of-sight (LOS) probability, or a combination thereof.
43 . A non-transitory, computer-readable medium comprising at least one instruction for causing a computer or processor to:
transmit a first set of location measurements to a server;
receive a feedback message from the server based on the first set of location measurements, wherein the feedback message comprises information indicating a number of requested location measurements from a particular transmission-reception point (TRP); and
transmit a second set of location measurements to the server based on the feedback message.
44 . The non-transitory, computer-readable medium of claim 43 , wherein the second set of location measurements comprises one or more measurements computed based on one or more of: a Positioning Reference Signal (PRS), or a Sounding Reference Signal (SRS), or a combination thereof.
45 . The non-transitory, computer-readable medium of claim 44 , wherein the feedback message comprises identifier data identifying one or more resources associated with the PRS or the SRS for which reporting is to be suppressed, or a combination thereof.