Granted Patent B2

US 12,652,642 · App. 18/098,336 · Granted Jun 9, 2026

Inventors: Yuhan Zhou (San Diego, CA); Philippe Jean Marc Michel Sartori (Naperville, IL)

Assignee: Samsung Electronics Co., Ltd

H04W64/003H04L5/0048H04W56/0035H04W72/0453

Abstract

Claims (50)

1 . A method comprising:

transmitting, by a user equipment (UE) in a network, to a location management function (LMF) of the network, an indication of a maximum frequency difference between reference signals that the UE supports for a frequency-based carrier phase measurement (F-CPM),

measuring, by the UE, a first carrier phase based on a first reference signal at a first frequency, and a second carrier phase based on a second reference signal at a second frequency that is different from the first frequency;

performing a measurement, by the UE, based on the first carrier phase and the second carrier phase; and

reporting, from the UE, the measurement to the LMF.

2 . The method of claim 1 , further comprising:

determining an initial position of the UE using a positioning technique;

determining an integer ambiguity at the initial position of the UE; and

determining a position of the UE in which the integer ambiguity is resolved using the measurement.

3 . The method of claim 1 , wherein the UE further transmits at least one of UE ability to support F-CPM, a carrier phase measurement method supported by the UE, or a carrier phase measurement accuracy supported by the UE to the LMF.

4 . The method of claim 1 , further comprising:

receiving, by the UE, via higher layer signaling, a measurement configuration indicating the first and second frequencies of the first and second reference signals; and

receiving, by the UE, via higher layer signaling, a measurement command to perform the measurement based on the first carrier phase and the second carrier phase.

5 . The method of claim 1 , further comprising:

receiving, by the UE, the first and second reference signals.

6 . The method of claim 1 , wherein the first and second reference signals are positioning reference signals or sounding reference signals.

7 . The method of claim 1 , further comprising:

transmitting, by the UE, the first reference signal at the first frequency; and

receiving, by the UE, the second reference signal at the second frequency.

8 . The method of claim 1 , wherein a resource allocation of a carrier phase reference signal in the first and second reference signals occupies a single resource element in the frequency domain and continuous symbols in the time domain.

9 . The method of claim 1 , wherein the UE comprises first and second receive antennas, and further comprising:

determining a position of the UE based on angles of arrival of the first and second reference signals at the first and second receive antennas.

10 . A user equipment (UE) in a network, the UE comprising:

a processor; and

a non-transitory computer readable storage medium storing instructions that, when executed, cause the processor to:

transmit, to a location management function (LMF) of the network, an indication of a maximum frequency difference between reference signals that the UE supports for a frequency-based carrier phase measurement (F-CPM),

measure a first carrier phase based on a first reference signal at a first frequency, and a second carrier phase based on a second reference signal at a second frequency that is different from the first frequency;

perform a measurement based on the first carrier phase and the second carrier phase; and

report the measurement to the LMF.

11 . The UE of claim 10 , wherein the instructions further cause the processor to:

determine an initial position of the UE using a positioning technique;

determine an integer ambiguity at the initial position of the UE; and

determine a position of the UE in which the integer ambiguity is resolved using the measurement.

12 . The UE of claim 10 , wherein the instructions further cause the processor to:

further transmit at least one of UE ability to support F-CPM, a carrier phase measurement method supported by the UE, or a carrier phase measurement accuracy supported by the UE to the LMF.

13 . The UE of claim 10 , wherein the instructions further cause the processor to:

receive, via higher layer signaling, a measurement configuration indicating the first and second frequencies of the first and second reference signals; and

receive, via higher layer signaling, a measurement command to perform the measuring of the measurement based on the first carrier phase and the second carrier phase.

14 . The UE of claim 10 , wherein the instructions further cause the processor to:

receive the first and second reference signals.

15 . The UE of claim 10 , wherein the first and second reference signals are positioning reference signals or sounding reference signals.

16 . The UE of claim 10 , wherein the instructions further cause the processor to:

transmit the first reference signal at the first frequency; and

receive the second reference signal at the second frequency.

17 . The UE of claim 10 , wherein a resource allocation of a carrier phase reference signal in the first and second reference signals occupies a single resource element in the frequency domain and continuous symbols in the time domain.

18 . The UE of claim 10 , wherein the UE comprises first and second receive antennas, and further comprising:

determining a position of the UE based on angles of arrival of the first and second reference signals at the first and second receive antennas.

19 . A system comprising:

a user equipment (UE) configured to transmit to a location management function (LMF) an indication of a maximum frequency difference between reference signals that the UE supports for carrier phase measurements, perform a measurement based on carrier phases from reference signals at different frequencies, and report the measurement; and

the LMF configured to receive the measurement and determine a location of the UE.

Assignments (1)

Continuity (5)

References Cited (13)