IP Library › Granted Patent US 12666331

Granted Patent B2

US 12666331 · App. 18/239,094 · Granted Jun 23, 2026

Method for determining frequency point and terminal device

Inventor: Haitao Li (Dongguan, CN)

Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.

H04W36/249 H04W36/083 H04W56/0065

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Quick Facts

Patent No.: US 12666331
App. No.: 18/239,094
Granted: Jun 23, 2026
Kind: B2

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Abstract

Embodiments of the present application provide methods for determining a frequency point and a terminal device. A method includes: a terminal device receives Doppler frequency offset assistance information; and the Doppler frequency offset assistance information is used to determine an actual frequency point to be measured or an actual frequency point of downlink synchronization of a target cell.

Claims (70)

1 . A method for determining a frequency, comprising:

receiving, by a terminal device, Doppler shift assistance information; and

determining, by the terminal device using the Doppler shift assistance information, an actual frequency to be measured,

wherein the receiving, by the terminal device, Doppler shift assistance information comprises:

receiving, by the terminal device, Radio Resource Control (RRC) measurement configuration information, wherein the RRC measurement configuration information comprises following information:

a SSB frequency to be measured;

at least one piece of Synchronization Signal/Physical Broadcast Channel (SS/PBCH) Block (SSB) Measurement Timing Configuration (SMTC) information corresponding to the SSB frequency to be measured; and

Doppler shift assistance information corresponding to each of the at least one piece of the SMTC information.

2 . The method of claim 1 , wherein the Doppler shift assistance information comprises at least one of:

at least one piece of Doppler shift information;

ephemeris information of at least one satellite; or

identification of ephemeris information of at least one satellite.

3 . The method of claim 1 , wherein the determining, by the terminal device using the Doppler shift assistance information, the actual frequency to be measured comprises:

determining, by the terminal device using the Doppler shift assistance information, at least one Doppler shift corresponding to at least one SMTC which corresponds to the SSB frequency to be measured; and

for the at least one SMTC, obtaining, at least one actual frequency to be measured by adding the SSB frequency to be measured to the at least one Doppler shift corresponding to the at least one SMTC, respectively.

4 . The method of claim 3 , wherein the determining, by the terminal device using the Doppler shift assistance information, the at least one Doppler shift comprises:

querying, by the terminal device using identification of ephemeris information of at least one satellite in the Doppler shift assistance information, pre-configured ephemeris information;

determining, by the terminal device according to a result of the querying, ephemeris information of the at least one satellite;

determining, by the terminal device using the ephemeris information of the at least one satellite, at least one of a moving direction or a moving speed of the at least one satellite;

determining, by the terminal device, at least one of a moving direction or a moving speed of the terminal device; and

determining, by the terminal device according to at least one of the moving direction or the moving speed of the at least one satellite and at least one of the moving direction or the moving speed of the terminal device, a Doppler shift for the at least one satellite.

5 . The method of claim 3 , wherein the determining, by the terminal device using the Doppler shift assistance information, the at least one Doppler shift comprises:

determining, by the terminal device using ephemeris information of at least one satellite in the Doppler shift assistance information, at least one of a moving direction or a moving speed of the at least one satellite;

determining, by the terminal device, at least one of a moving direction or a moving speed of the terminal device; and

6 . The method of claim 5 , wherein the determining, by the terminal device, at least one of the moving direction or the moving speed of the terminal device comprises:

determining, according to a capability of Global Navigation Satellite System (GNSS) of the terminal device, at least one of the moving direction or the moving speed of the terminal device.

7 . A method for determining a frequency, comprising:

transmitting, by a network device, Doppler shift assistance information, wherein the Doppler shift assistance information is used to determine an actual frequency to be measured,

wherein the transmitting, by the network device, the Doppler shift assistance information comprises:

transmitting, by the network device, Radio Resource Control (RRC) measurement configuration information, wherein the RRC measurement configuration information comprises following information:

a SSB frequency to be measured;

Doppler shift assistance information corresponding to each of the at least one piece of the SMTC information.

8 . The method of claim 7 , wherein the Doppler shift assistance information comprises at least one of:

at least one piece of Doppler shift information;

ephemeris information of at least one satellite; or

identification of ephemeris information of at least one satellite.

9 . The method of claim 7 , wherein the Doppler shift assistance information is used for a terminal device to determine at least one Doppler shift corresponding to at least one SMTC, which corresponds to the SSB frequency to be measured; and obtain, for the at least one SMTC, at least one actual frequency to be measured by adding the SSB frequency to be measured to the at least one Doppler shift corresponding to the at least one SMTC, respectively.

10 . The method of claim 9 , wherein the Doppler shift assistance information is used for a terminal device to perform the following operations: querying pre-configured ephemeris information by using identification of ephemeris information of at least one satellite in the Doppler shift assistance information, determining ephemeris information of the at least one satellite according to a result of the querying; determining at least one of a moving direction or a moving speed of the at least one satellite by using the ephemeris information of the at least one satellite; and determining the Doppler shift for the at least one satellite according to at least one of the moving direction or the moving speed of the at least one satellite and at least one of a moving direction or a moving speed of the terminal device.

11 . The method of claim 9 , wherein the Doppler shift assistance information is used for the terminal device to determine at least one a moving direction or a moving speed of the at least one satellite by using ephemeris information of at least one satellite in the Doppler shift assistance information and determine the Doppler shift for the at least one satellite according to at least one of the moving direction or the moving speed of the at least one satellite and at least one of a moving direction or a moving speed of the terminal device.

12 . A terminal device, comprising:

a processor;

a transceiver; and

a memory for storing a computer program,

wherein the processor is configured to execute the computer program to:

receive Doppler shift assistance information via the transceiver; and

determine, using the Doppler shift assistance information, an actual frequency to be measured,

wherein the processor is further configured to execute the computer program to receive Radio Resource Control (RRC) measurement configuration information, wherein the RRC measurement configuration information comprises following information:

a SSB frequency to be measured;

at least one piece of Synchronization Signal/Physical Broadcast Channel (SS/PBCH) Block (SSB) Measurement Timing Configuration (STMC) information corresponding to the SSB frequency to be measured; and

Doppler shift assistance information corresponding to each of the at least one piece of the STMC information.

13 . The terminal device of claim 12 , wherein the Doppler shift assistance information comprises at least one of:

at least one piece of Doppler shift information;

ephemeris information of at least one satellite; or

identification of ephemeris information of at least one satellite.

14 . The terminal device of claim 12 , wherein the processor is further configured to execute the computer program to:

determine, using the Doppler shift assistance information, at least one Doppler shift corresponding to at least one SMTC which corresponds to the SSB frequency to be measured; and

for the at least one SMTC, obtain at least one actual frequency to be measured by adding the SSB frequency to be measured to the at least one Doppler shift corresponding to the at least one SMTC, respectively.

15 . The terminal device of claim 14 , wherein the processor is further configured to execute the computer program to:

query, using identification of ephemeris information of the at least one satellite in the Doppler shift assistance information, pre-configured ephemeris information;

determine, according to a result of the querying, ephemeris information of the at least one satellite;

determine, using the ephemeris information of the at least one satellite, at least one of a moving direction or a moving speed of the at least one satellite;

determine at least one a moving direction or a moving speed of the terminal device; and

determine, according to at least one of the moving direction or the moving speed of the at least one satellite and at least one of the moving direction or the moving speed of the terminal device, the Doppler shift for the at least one satellite.

16 . The terminal device of claim 14 , wherein the processor is further configured to execute the computer program to:

determine, using ephemeris information of at least one satellite in the Doppler shift assistance information, at least one of a moving direction or a moving speed of the at least one satellite;

determine at least one of a moving direction or a moving speed of the terminal device; and

17 . The terminal device of claim 16 , wherein the processor is further configured to execute the computer program to: determine, according to a capability of Global Navigation Satellite System (GNSS) of the terminal device, at least one of the moving direction or the moving speed of the terminal device.