Device and method for position measurement in wireless communication system
The present disclosure relates to a pre-5 th -Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4 th -Generation (4G) communication system such as Long Term Evolution (LTE). In particular, the present invention relates to an apparatus and method for position measurement in a wireless communication system. An operating method of a terminal in the wireless communication system includes transmitting a signal for requesting for positioning, and receiving positioning signals for the positioning of the terminal from a plurality of other terminals.
1. An apparatus for a terminal in a wireless communication system, the apparatus comprising:
a transceiver; and
at least one processor operatively coupled with the transceiver,
wherein the at least one processor is configured to:
transmit a first signal for requesting positioning,
receive positioning signals for positioning of the terminal from a first plurality of other terminals, the first plurality of other terminals comprising at least one position determined terminal with a determined position and an expiration time for the determined position,
determine distance values between the terminal and the first plurality of other terminals based on the positioning signals, and
if at least one of the distance values is greater than or equal to a threshold value, transmit a second signal for requesting positioning for receiving other positioning signals from a second plurality of other terminals except terminals whose expiration time has elapsed.
2. The apparatus of claim 1 , wherein the at least one processor is further configured to determine a position of the terminal based on the positioning signals.
3. The apparatus of claim 1 , wherein the at least one processor is further configured to:
transmit measurement parameters for the positioning signals, and
receive position information of the terminal.
4. The apparatus of claim 1 , wherein the at least one processor is further configured to receive at least one of information regarding a position coordinate of each of the first plurality of other terminals and propagation delay information between a base station and the first plurality of other terminals.
5. The apparatus of claim 1 , wherein the at least one processor is further configured to confirm at least one of information regarding a position coordinate of each of the first plurality of other terminals and propagation delay information between a base station and the first plurality of other terminals from the positioning signals.
6. The apparatus of claim 1 , wherein the at least one processor is further configured to:
if the at least one distance value is greater than or equal to the threshold, receive the positioning signals, and determine the position of the terminal based on the positioning signals.
7. The apparatus of claim 1 , wherein the at least one processor is further configured to receive, from the first plurality of other terminals, at least one of information regarding a position coordinate of each of the first plurality of other terminals and propagation delay information between a base station and the first plurality of other terminals from the positioning signals.
8. The apparatus of claim 1 , wherein the first signal for requesting positioning is transmitted to the first plurality of other terminals.
9. The apparatus of claim 1 , wherein the at least one processor is configured to:
transmit, to the first plurality of other terminals, the first signal for requesting positioning, and
receive, from the first plurality of other terminals, the positioning signals, if a receive power value of the first signal is greater than a threshold and the positioning of the terminal is predetermined.
10. An apparatus for a base station in a wireless communication system, the apparatus comprising:
a transceiver; and
at least one processor operatively coupled with the transceiver,
wherein the at least one processor is configured to:
receive from a terminal a first signal for requesting positioning,
transmit, to a first plurality of other terminals a second signal for requesting for transmission of a positioning signal for the positioning of the terminal,
wherein the first plurality of other terminals comprises at least one position determined terminal with a determined position and an expiration time for the determined position, and
receive, from the terminal, a third signal for requesting positioning for receiving positioning signals from a second plurality of other terminals except terminals whose expiration time has elapsed.
11. The apparatus of claim 10 , wherein the at least one processor is further configured to transmit to the terminal, at least one of information regarding a position coordinate of each of the first plurality of other terminals and propagation delay information between the base station and the first plurality of other terminals.
12. An apparatus for determining a position of a terminal in a wireless communication system, the apparatus comprising:
a transceiver; and
at least one processor operatively coupled with the transceiver,
wherein the at least one processor is configured to:
acquire at least one positioning parameter regarding positions of a first plurality of other terminals, wherein the first plurality of other terminals comprises at least one position determined terminal with a determined position and an expiration time for the determined position,
determine a first part of position information of the terminal based on the at least one positioning parameter,
determine a second part of the position information of the terminal based on the first part of the position information, the position information is used for determining distance values between the terminal and the first plurality of other terminals, and
if at least one of the distance values is greater than or equal to a threshold value, acquire at least one other positioning parameter regarding positions of a second plurality of other terminals except terminals whose expiration time has elapsed.
13. The apparatus of claim 12 ,
wherein the first part of the position information comprises two-dimensional position coordinates regarding one part of a plane among three-dimensional position coordinates of the terminal, and
wherein the second part comprises at least one remaining coordinate except for the first part of the position information among the three-dimensional position coordinates.
14. The apparatus of claim 12 , wherein the positioning parameter is determined based on positioning parameters transmitted from a first device, a second device, and a third device, and
wherein the at least one processor is further configured to:
set a position of the first device to an origin of three-dimensional coordinate axes for expressing the position information, and
rotate the three-dimensional coordinate axes so that the second device is located on one axis among the coordinate axes.
15. The apparatus of claim 12 , wherein the at least one processor is configured to:
determine the first part of the position information based on a pre-defined initial value or a predetermined position coordinate value of the terminal.
16. The apparatus of claim 12 , wherein the at least one processor is further configured to:
update the first part of the position information based on the second part.
17. The apparatus of claim 12 , wherein the at least one processor is further configured to:
transmit, to the terminal, the first part and the second part of the position information.