Granted Patent B2

US 12,348,446 · App. 18/422,168 · Granted Jul 1, 2025

Inventors: Dong Hyun Park (Seoul, KR); Sung Jun Yoon (Seoul, KR)

Assignee: Innovative Technology Lab Co., Ltd.

H04L5/0048H04J11/0079H04L5/005H04L5/0053H04L27/2613H04W72/30H04L5/0007H04L27/26132H04L27/2655H04W72/0446

Abstract

Claims (110)

1. A method performed by an NB-IoT wireless device, the method comprising:

receiving first information associated with Long-Term Evolution (LTE) positioning reference signaling and second information associated with narrow-band (NB) positioning reference signaling;

identifying, based on the first information, LTE positioning reference signal (PRS) information, wherein the LTE PRS information comprises information of an LTE PRS reference cell that transmits an LTE PRS;

identifying, based on the second information, NB PRS information for the NB-IoT wireless device, wherein the NB PRS information comprises information of an NB PRS reference cell that transmits an NB PRS;

receiving the LTE PRS and the NB PRS transmitted in a frequency band configured for the NB-IoT wireless device;

performing, based on the received NB PRS and based on the received LTE PRS, a reference signal time difference (RSTD) measurement; and

transmitting a signal indicating the RSTD measurement.

2. The method of claim 1 , further comprising:

identify one or more of:

second LTE PRS information, based on the first information, wherein the second LTE PRS information comprises information of an LTE PRS neighbor cell that transmits a second LTE PRS; or

second NB PRS information, based on the second information, wherein the second NB PRS information comprises information of an NB PRS neighbor cell that transmits a second NB PRS;

receiving one or more of:

the second LTE PRS transmitted in the frequency band configured for the NB-IoT wireless device from the LTE PRS neighbor cell; or

the second NB PRS transmitted in the frequency band configured for the NB-IoT wireless device from the NB PRS neighbor cell; and

performing, based on the received one or more of the second LTE PRS or the second NB PRS, the RSTD measurement or a second RSTD measurement.

3. The method of claim 2 , further comprising:

identifying one or more of:

third LTE PRS information, based on the first information, wherein the third LTE PRS information comprises information of a second LTE PRS neighbor cell that transmits a third LTE PRS; or

third NB PRS information, based on the second information, wherein the third NB PRS information comprises information of a second NB PRS neighbor cell that transmits a third NB PRS;

receiving one of more of:

the third LTE PRS transmitted in the frequency band configured for the NB-IoT wireless device from the second LTE PRS neighbor cell; or

the third NB PRS transmitted in the frequency band configured for the NB-IoT wireless device from the second NB PRS neighbor cell; and

performing, based on the received one or more of the third LTE PRS or the third NB PRS, the second RSTD measurement or a third RSTD measurement.

4. The method of claim 3 , wherein the second RSTD measurement or the third RSTD measurement is further based on one or more of:

the received LTE PRS;

the received second NB PRS; or

the received second LTE PRS.

5. The method of claim 1 , wherein a frequency band corresponding to one physical resource block (PRB) is assigned for the NB PRS, wherein a frequency band corresponding to a plurality of PRBs is assigned for the LTE PRS, and wherein the plurality of PRBs comprises the one PRB.

6. The method of claim 5 , further comprising:

identifying an LTE PRB index indicating the one PRB; and

identifying, based on the LTE PRB index, the NB PRS and the LTE PRS transmitted in the frequency band configured for the NB-IoT wireless device.

7. The method of claim 1 , further comprising:

receiving, from the NB PRS reference cell, the NB PRS that is mapped in one physical resource block (PRB), and

wherein the NB PRS is mapped in a subframe in which narrowband physical broadcasting channel (NPBCH), narrowband primary synchronization signal (NPSS), narrowband secondary synchronization signal (NSSS), or System Information Block type 1 (SIB 1 ) is not allocated.

8. The method of claim 1 , wherein the LTE PRS reference cell and the NB PRS reference cell correspond to a same cell.

9. A method performed by an NB-IoT wireless device, the method comprising:

receiving first information associated with Long-Term Evolution (LTE) positioning reference signaling and second information associated with narrow-band (NB) positioning reference signaling;

receiving an NB positioning reference signal (PRS) transmitted in a frequency band configured for the NB-IoT wireless device; and

receiving an LTE PRS transmitted in the frequency band configured for the NB-IoT wireless device;

identifying, based on the second information, the NB PRS transmitted in the frequency band configured for the NB wireless device;

identifying, based on the first information, the LTE PRS transmitted in the frequency band configured for the NB-IoT wireless device;

performing, based on the identified NB PRS and the identified LTE PRS, a reference signal time difference (RSTD) measurement; and

transmitting the RSTD measurement.

10. The method of claim 9 , further comprising:

identifying, based on the first information, information of an LTE PRS reference cell that transmits the LTE PRS.

11. The method of claim 9 , further comprising:

identifying one or more antenna ports of the NB-IoT wireless device to receive the NB PRS and the LTE PRS.

12. The method of claim 9 ,

wherein a portion of a frequency band corresponding to a plurality of PRBs that are configured for the LTE PRS is not configured for the NB-IoT wireless device.

13. The method of claim 12 , further comprising receiving configuration information for one or more wireless user devices, wherein the one or more wireless user devices comprises:

the NB-IoT wireless device; and

at least one LTE wireless device configured with the frequency band corresponding to the plurality of PRBs.

14. The method of claim 9 , wherein the NB PRS and the LTE PRS are mapped in a first frequency band and are transmitted in a subframe.

15. The method of claim 9 , wherein the NB PRS is transmitted in a subframe in which the LTE PRS is not transmitted.

16. The method of claim 9 , wherein the second information comprises:

an LTE physical resource block (PRB) index that indicates a first frequency band in which the NB PRS and the LTE PRS are mapped.

17. A method of a network comprising one or more base stations, the method comprising:

transmitting, to an NB-IoT wireless device, first information associated with Long-Term Evolution (LTE) positioning reference signaling and second information associated with narrow-band (NB) positioning reference signaling;

transmitting, based on the first information, LTE positioning reference signal (PRS) information, wherein the LTE PRS information comprises information of an LTE PRS reference cell that transmits an LTE PRS;

transmitting, based on the second information, NB PRS information for the NB-IoT wireless device, wherein the NB PRS information comprises information of an NB PRS reference cell that transmits an NB PRS;

transmitting the LTE PRS in a frequency band configured for the NB-IoT wireless device;

transmitting the NB PRS in the frequency band configured for the NB-IoT wireless device; and

receiving a signal indicating a reference signal time difference (RSTD) measurement, wherein the RSTD measurement is associated with the transmitted NB PRS and the transmitted LTE PRS.

18. The method of claim 17 , further comprising:

transmitting one or more of:

second LTE PRS information, based on the first information, wherein the second LTE PRS information comprises information of an LTE PRS neighbor cell that transmits a second LTE PRS; or

second NB PRS information, based on the second information, wherein the second NB PRS information comprises information of an NB PRS neighbor cell that transmits a second NB PRS; and

transmitting one or more of:

the second LTE PRS in the frequency band configured for the NB-IoT wireless device from the LTE PRS neighbor cell; or

the second NB PRS in the frequency band configured for the NB-IoT wireless device from the NB PRS neighbor cell,

wherein one or more of the RSTD measurement or a second RSTD measurement is determined based on one or more of the second LTE PRS or the second NB PRS.

19. The method of claim 18 , further comprising:

transmitting one or more of:

third LTE PRS information, based on the first information, wherein the third LTE PRS information comprises information of a second LTE PRS neighbor cell that transmits a third LTE PRS; or

third NB PRS information, based on the second information, wherein the third NB PRS information comprises information of a second NB PRS neighbor cell that transmits a third NB PRS; and

transmitting one of more of:

the third LTE PRS in the frequency band configured for the NB-IoT wireless device from the second LTE PRS neighbor cell; or

the third NB PRS in the frequency band configured for the NB-IoT wireless device from the second NB PRS neighbor cell,

wherein one or more of the second RSTD measurement or a third RSTD measurement is determined based on one or more of the third LTE PRS or the third NB PRS.

20. The method of claim 19 , wherein one or more of the second RSTD measurement or the third RSTD measurement is further based on one or more of:

the LTE PRS;

the second NB PRS; or

the second LTE PRS.

21. The method of claim 17 , wherein a frequency band corresponding to one physical resource block (PRB) is assigned for the NB PRS, wherein a frequency band corresponding to a plurality of PRBs is assigned for the LTE PRS, and wherein the plurality of PRBs comprises the one PRB.

22. The method of claim 21 , further comprising:

determining an LTE PRB index indicating the one PRB; and

determining, based on the LTE PRB index, the NB PRS and the LTE PRS for transmission in the frequency band configured for the NB-IoT wireless device.

23. The method of claim 17 , further comprising:

transmitting, from the NB PRS reference cell, the NB PRS that is mapped in one physical resource block (PRB), and

wherein the NB PRS is mapped in a subframe in which narrowband physical broadcasting channel (NPBCH), narrowband primary synchronization signal (NPSS), narrowband secondary synchronization signal (NSSS), or System Information Block type 1 (SIB 1 ) is not allocated.

24. The method of claim 17 , wherein the LTE PRS reference cell and the NB PRS reference cell correspond to a same cell.

25. The method of claim 17 , wherein the RSTD measurement indicates the RSTD measurement is determined based on the NB PRS and based on the LTE PRS.

26. A method of a network comprising one or more base stations, the method comprising:

transmitting, to an NB-IoT wireless device, first information associated with Long-Term Evolution (LTE) positioning reference signaling and second information associated with narrow-band (NB) positioning reference signaling;

determining, based on the second information, an NB positioning reference signal (PRS) to be transmitted in a frequency band configured for the NB-IoT wireless device;

determining, based on the first information, an LTE PRS to be transmitted in the frequency band configured for the NB-IoT wireless device;

transmitting, to the NB-IoT wireless device, the NB PRS in the frequency band configured for the NB-IoT wireless device;

transmitting, to the NB-IoT wireless device, the LTE PRS in the frequency band configured for the NB-IoT wireless device; and

receiving a reference signal time difference (RSTD) measurement, wherein the RSTD measurement is associated with the NB PRS and the LTE PRS, and wherein the RSTD measurement is received from the NB-IoT wireless device based on the NB PRS and the LTE PRS.

27. The method of claim 26 , wherein the first information indicates information of an LTE PRS reference cell that transmits the LTE PRS in the frequency band configured for the NB-IoT wireless device.

28. The method of claim 26 , further comprising:

determining one or more antenna ports of the one or more base stations to transmit, to the NB-IoT wireless device, the NB PRS and the LTE PRS.

29. The method of claim 26 , wherein a portion of a frequency band corresponding to a plurality of PRBs that are configured for the LTE PRS is not configured for the NB-IoT wireless device.

30. The method of claim 29 , further comprising transmitting configuration information for one or more wireless user devices, wherein the one or more wireless user devices comprises:

the NB-IoT wireless device; and

at least one LTE wireless device configured with the frequency band corresponding to the plurality of PRBs.

31. The method of claim 26 , wherein the NB PRS and the LTE PRS are mapped in a first frequency band and are transmitted in a subframe.

32. The method of claim 26 , wherein the NB PRS is transmitted in a subframe in which the LTE PRS is not transmitted.

33. The method of claim 26 , wherein the second information comprises:

an LTE physical resource block (PRB) index that indicates a first frequency band in which the NB PRS and the LTE PRS are mapped.

Assignments (4)

Priority Claims (2)

Continuity (6)

References Cited (28)