Method for receiving reference signal in wireless communication system, and apparatus therefor

Patent metadata

Field	Value
Publication number	US-2017366244-A1
Application number	US-201515534278-A
Country	US
Kind code	A1
Filing date	Dec 11, 2015
Priority date	Dec 16, 2014
Publication date	Dec 21, 2017
Grant date	—

Abstract

A method for receiving a reference signal for position determination in a wireless communication system according to one embodiment of the present invention may comprise the steps of: receiving configuration information regarding a positioning reference signal (PRS), the method thereof being performed by user equipment (UE) and that is transmitted from a plurality of antenna ports, wherein the PRS related configuration information includes information regarding a beam direction applied to the PRS; measuring each PRS group to which the same beam direction related information is applied; and reporting the measurement results of the respective PRS group to a serving base station.

First claim

1 . A method for receiving a positioning reference signal in a wireless communication system, the method performed by a terminal and comprising the steps of:
receiving positioning reference signal (PRS) related configuration information transmitted from a plurality of antenna ports, the PRS related configuration information including beam direction related information applied to the PRS; measuring PRS groups per PRS group, each PRS group including at least one PRS to which the same beam direction related information is applied; and reporting the measurement result of each PRS group to a serving base station.

2 . The method according to claim 1 , wherein the beam direction related information indicates information on a beam direction applied to PRS transmitted from at least one subframe included in PRS positioning occasion indicated by the PRS related configuration information.

3 . The method according to claim 1 , wherein the beam direction related information indicates information on a beam direction applied to each PRS positioning occasion indicated by the PRS related configuration information.

4 . The method according to claim 1 , wherein the beam direction related information indicates information on a beam direction applied to each symbol to which PRS sequence included in the PRS positioning occasion indicated by the PRS related configuration information is mapped.

5 . The method according to claim 1 , further comprising reporting, to the serving base station, a measurement result that includes information on a resource in which PRS estimated as the best beam direction is received.

6 . The method according to claim 1 , wherein the PRS is received in such a manner that a plurality of precoding matrixes are applied thereto for a first time duration, and is received in such a manner that one precoding matrix is applied thereto or no precoding matrix is applied thereto for a second time duration.

7 . The method according to claim 6 , wherein one precoding matrix applied for the second time duration is determined depending on information on the resource in which PRS estimated as the best beam direction reported by the terminal is received.

8 . The method according to claim 6 , wherein the second time duration is shifted to the first time duration if the measurement result of the PRS by the terminal is an expected value or less.

9 . A terminal configured to receive a positioning reference signal in a wireless communication system, the UE comprising:
a radio frequency (RF) unit; and a processor controls the RF unit, wherein the processor receives positioning reference signal (PRS) related configuration information transmitted from a plurality of antenna ports, the PRS related configuration information including beam direction related information applied to the PRS, measures PRS groups per PRS group, each PRS group including at least one PRS to which the same beam direction related information is applied, and reports the measurement result of each PRS group to a serving base station.

10 . The terminal according to claim 9 , wherein the beam direction related information indicates information on a beam direction applied to PRS transmitted from at least one subframe included in PRS positioning occasion indicated by the PRS related configuration information.

11 . The terminal according to claim 9 , wherein the beam direction related information indicates information on a beam direction applied to each PRS positioning occasion indicated by the PRS related configuration information.

12 . The terminal according to claim 9 , wherein the beam direction related information indicates information on a beam direction applied to each symbol to which PRS sequence included in the PRS positioning occasion indicated by the PRS related configuration information is mapped.

13 . The terminal according to claim 9 , wherein the processor is configured to report, to the serving base station, a measurement result that includes information on a resource in which PRS estimated as the best beam direction is received.

14 . The terminal according to claim 9 , wherein the PRS is received in such a manner that a plurality of precoding matrixes are applied thereto for a first time duration, and is received in such a manner that one precoding matrix is applied thereto or no precoding matrix is applied thereto for a second time duration.

15 . The terminal according to claim 14 , wherein one precoding matrix applied for the second time duration is determined depending on information on the resource in which PRS estimated as the best beam direction and reported by the terminal is received.

16 . The terminal according to claim 14 , wherein the second time duration is shifted to the first time duration if the measurement result of the PRS by the terminal is an expected value or less.

Assignees

• Lg Electronics Inc

Inventors

• Lee Hyunho
• Park Hanjun
• Park Jonghyun
• Chae Hyukjin
• Kim Youngtae

Classifications

• H04B17/318

  Received signal strength · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title

• H04B7/0619 Primary

  using feedback from receiving side (feedback signaling for adaptive modulation/coding H04L1/0001) · CPC title

• H04B7/0417

  Feedback systems · CPC title

• H04B17/24 Primary

  with feedback of measurements to the transmitter · CPC title