Location-assistance signaling to improve performance of minimization of drive tests

Patent metadata

Field	Value
Publication number	US-2025234228-A1
Application number	US-202418414310-A
Country	US
Kind code	A1
Filing date	Jan 16, 2024
Priority date	Jan 16, 2024
Publication date	Jul 17, 2025
Grant date	—

Abstract

A network node may configure a minimization of drive test (MDT) configuration. The network node may transmit, for a user equipment (UE), the MDT configuration. The UE may obtain the minimization of drive test (MDT) configuration. The UE may calculate at least one of a location of the UE or an MDT uncertainty metric based on the MDT configuration. The UE may transmit at least one of a first indicator of the calculated location of the UE or a second indicator of the calculated MDT uncertainty metric. The network node may receive at least one of the first indicator of a location of the UE or the second indicator of the MDT uncertainty metric based on the MDT configuration.

First claim

What is claimed is:

1 . An apparatus for wireless communication at a user equipment (UE), comprising:
at least one memory; and at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:
obtain a minimization of drive test (MDT) configuration;
calculate at least one of a location of the UE or an MDT uncertainty metric based on the MDT configuration; and
transmit at least one of a first indicator of the calculated location of the UE or a second indicator of the calculated MDT uncertainty metric.

2 . The apparatus of claim 1 , wherein, to obtain the MDT configuration, the at least one processor, individually or in any combination, is configured to:
receive, from a network node, the MDT configuration.

3 . The apparatus of claim 2 , wherein the MDT configuration comprises a third indicator of a signal threshold value, and wherein, to calculate at least one of the location of the UE or the MDT uncertainty metric based on the MDT configuration, the at least one processor, individually or in any combination, is configured to:
receive a pilot signal; measure the pilot signal; and calculate the location of the UE in response to the measured pilot signal being less than or equal to the signal threshold value.

4 . The apparatus of claim 3 , wherein the signal threshold value comprises at least one of:
a reference signal received power (RSRP) threshold value; or a reference signal strength indicator (RSSI) threshold value.

5 . The apparatus of claim 3 , wherein the pilot signal comprises at least one of:
a synchronization signal block (SSB); or a positioning reference signal (PRS).

6 . The apparatus of claim 3 , wherein the MDT configuration comprises a fourth indicator of a plurality of location calculation occasions, wherein, to calculate the location of the UE, the at least one processor, individually or in any combination, is configured to:
calculate the location of the UE during each of the plurality of location calculation occasions, and wherein, to transmit the first indicator of the calculated location of the UE, the at least one processor, individually or in any combination, is configured to:
transmit a fifth indicator of a plurality of calculated locations corresponding to the plurality of location calculation occasions, wherein the plurality of calculated occasions comprises the calculated location of the UE.

7 . The apparatus of claim 3 , wherein the at least one processor, individually or in any combination, is further configured to:
transmit a UE capability comprising a fourth indicator of a sensitivity metric associated with the UE before the reception of the MDT configuration.

8 . The apparatus of claim 7 , wherein the sensitivity metric comprises at least one of:
a class of the UE; a power level of the UE; a requested accuracy level; a number of receiver (Rx) chains reported by the UE; or a number of Rx antennas used by the UE to receive the pilot signal.

9 . The apparatus of claim 2 , wherein the MDT configuration comprises a third indicator of a periodicity threshold, and wherein, to calculate at least one of the location of the UE or the MDT uncertainty metric based on the MDT configuration, the at least one processor, individually or in any combination, is configured to:
periodically calculate the location of the UE based on a clock time of the UE and the periodicity threshold.

10 . The apparatus of claim 1 , wherein, to obtain the MDT configuration, the at least one processor, individually or in any combination, is configured to:
configure the MDT configuration based on at least one of:
a sensitivity metric associated with the UE;
a power headroom report (PHR) value associated with the UE; or
a Doppler spread value associated with the UE.

11 . The apparatus of claim 10 , wherein the sensitivity metric comprises at least one of:
a class of the UE; a power level of the UE; a requested accuracy level; a number of receiver (Rx) chains reported by the UE; or a number of Rx antennas used by the UE to measure the calculated location.

12 . The apparatus of claim 10 , wherein the at least one processor, individually or in any combination, is further configured to:
receive a PHR comprising a third indicator of the PHR value before the configuration of the MDT configuration.

13 . The apparatus of claim 10 , wherein the at least one processor, individually or in any combination, is further configured to:
receive, from a network node, a first pilot signal; receive, from the network node, a second pilot signal; and calculate the Doppler spread value based on the first pilot signal and the second pilot signal.

14 . The apparatus of claim 1 , wherein the MDT uncertainty metric comprises at least one of:
a time between a location calculation and an MDT measurement; or a calculation based on a mobility metric associated with the UE and the time between the location calculation and the MDT measurement.

15 . The apparatus of claim 1 , wherein the at least one processor, individually or in any combination, is further configured to:
transmit, before the obtainment of the MDT configuration, a UE capability comprising a third indicator of whether the UE is capable of calculating at least one of the location of the UE or the MDT uncertainty metric based on the MDT configuration.

16 . The apparatus of claim 1 , further comprising a transceiver coupled to the at least one processor, wherein the at least one processor, individually or in any combination, is further configured to:
transmit, via the transceiver, at least one of the first indicator of the calculated location of the UE or the second indicator of the calculated MDT uncertainty metric.

17 . An apparatus for wireless communication at a network node, comprising:
at least one memory; and at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:
configure a minimization of drive test (MDT) configuration;
transmit, for a user equipment (UE), the MDT configuration; and
receive at least one of a first indicator of a location of the UE or a second indicator of an MDT uncertainty metric based on the MDT configuration.

18 . The apparatus of claim 17 , wherein the MDT configuration comprises a signal threshold value, wherein the at least one processor, individually or in any combination, is further configured to:
transmit a pilot signal, wherein the reception of the at least one of the first indicator or the second indicator is based on the pilot signal and the signal threshold value.

19 . The apparatus of claim 18 , wherein the at least one processor, individually or in any combination, is further configured to:
receive a UE capability comprising a third indicator of a sensitivity metric associated with the UE, wherein, to configure the MDT configuration, the at least one processor, individually or in any combination, is configured to:
configure at least one of the signal threshold value or a periodicity threshold of the MDT configuration based on the sensitivity metric.

20 . The apparatus of claim 17 , wherein the MDT configuration comprises a third indicator of a plurality of location calculation occasions, wherein, to receive the first indic

Assignees

• Qualcomm Inc

Inventors

• Kumar Akash
• Jain Amit
• Bansal Hargovind Prasad

Classifications

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W64/00

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title