Methods and apparatus for transmitting and receiving a positioning reference signal in a wireless communication system

1. A method for transmitting a positioning reference signal (PRS) by a first base station in a wireless communication system, the method comprising:

transmitting a first PRS having a first PRS pattern using a first subcarrier spacing (SCS),

receiving, from a user equipment (UE), information associated with positioning of the UE which receives the first PRS from the first base station and a second PRS from a second base station, the second PRS being transmitted, by the second base station, to the UE using a second SCS,

wherein the first SCS is different from the second SCS applied to the second PRS having a second PRS pattern, and

wherein at least one of the first and the second PRS pattern is configured by a SCS and a cyclic prefix (CP).

2. The method of claim 1 , wherein the first PRS pattern has a first repetition frequency and the second PRS pattern has a second repetition frequency, and wherein each of the first repetition frequency and the second repetition frequency is determined by a number of slots in a subframe.

3. The method of claim 1 , wherein the first PRS pattern is a diagonal pattern with respect to a slot.

4. The method of claim 1 , wherein at least part of the first PRS pattern and the second PRS pattern is placed in every symbol of a slot in a subframe.

5. A method for receiving a positioning reference signal (PRS) by a user equipment (UE) in a wireless communication system, the method comprising:

receiving, from a first base station, a first PRS having a first PRS pattern using a first subcarrier spacing (SCS),

receiving, from a second base station, a second PRS having a second PRS pattern using a second SCS which is different from the first SCS,

obtaining positioning information associated with positioning of the UE based on the first PRS and the second PRS, and

transmitting, to the first base station, the positioning information,

wherein at least one of the first and second PRS pattern is configured by a SCS and a cyclic prefix (CP).

6. The method of claim 5 , wherein the receiving the first PRS includes sampling the first PRS at a sampling frequency corresponding to one of the first SCS or the second SCS, and wherein the receiving the second PRS includes sampling the second PRS at the sampling frequency.

7. The method of claim 6 , wherein, when the sampling frequency corresponds to the first SCS, receiving the second PRS comprises receiving a first portion of the second PRS in a first slot and a second portion of the second PRS in a second slot.

8. The method of claim 7 , wherein at least part of the first PRS pattern and the second PRS pattern is placed in every symbol of a slot in a subframe.

9. The method of claim 5 , wherein the first base station and the second base station respectively operate in a first cell with the first SCS and in a second cell with the second SCS.

10. The method of claim 9 , wherein each subframe of the first cell is divided into one or more slots based on the first SCS, and each slot of the first cell is divided into a plurality of symbols, and

wherein each subframe of the second cell is divided into one or more slots based on the second SCS, and each slot of the second cell is divided into a plurality of symbols.

11. A first base station for transmitting a positioning reference signal (PRS) in a communication system, the first base station comprising:

a transceiver; and

a controller configured to control the transceiver to:

transmit a first PRS having a first PRS pattern using a first subcarrier spacing (SCS), and

receive information associated with positioning of a user equipment (UE) based on the first PRS from the first base station and a second PRS from the second base station, the second PRS being transmitted by the second base station to the UE using a second SCS,

wherein the first SCS is different from a second SCS applied to the second PRS having a second PRS pattern, and

wherein at least one of the first and the second PRS pattern is configured by a SCS and a cyclic prefix (CP).

12. The first base station of claim 11 , wherein the first PRS pattern has a first repetition frequency and the second PRS pattern has a second repetition frequency, and wherein each of the first repetition frequency and the second repetition frequency is determined by a number of slots in a subframe.

13. The first base station of claim 12 , wherein at least part of the first PRS pattern and the second PRS pattern is placed in every symbol of a slot in a subframe.

14. The first base station of claim 11 , wherein the first PRS pattern is a diagonal pattern with respect to a slot.

15. A user equipment (UE) for receiving a position reference signal (PRS) in a wireless communication system, the UE comprising:

a transceiver; and

a controller configured to control the transceiver to:

receive, from a first base station, a first PRS having a first PRS pattern using a first subcarrier spacing (SCS) through the transceiver,

receive, from a second base station, a second PRS having a second PRS pattern using a second SCS which is different from the first SCS through the transceiver,

obtain positioning information associated with positioning of the UE based on the first PRS and the second PRS, and

transmit, to the first base station, the positioning information through the transceiver,

wherein at least one of the first and second PRS pattern is configured by a SCS and a cyclic prefix (CP).

16. The UE of claim 15 , wherein the controller is configured to sample the first PRS and the second PRS at a sampling frequency corresponding to one of the first SCS or the second SCS.

17. The UE of claim 16 , wherein, when the sampling frequency corresponds to the first SCS, the controller is configured to control the transceiver to receive a first portion of the second PRS in a first slot and a second portion of the second PRS in a second slot.

18. The UE of claim 17 , wherein the first base station and the second base station respectively operate in a first cell with the first SCS and in a second cell with the second SCS.

19. The UE of claim 17 , wherein at least part of the first PRS and the second pattern is placed in every symbol of a slot in a subframe.

20. The UE of claim 18 , wherein each subframe of the first cell is divided into one or more slots based on the first SCS, and each slot of the first cell is divided into a plurality of symbols, and

wherein each subframe of the second cell is divided into one or more slots based on the second SCS, and each slot of the second cell is divided into a plurality of symbols.