Reference signal reception method in wireless communication system, and device for same

Patent metadata

Field	Value
Publication number	US-2018054792-A1
Application number	US-201615546636-A
Country	US
Kind code	A1
Filing date	Feb 26, 2016
Priority date	Mar 6, 2015
Publication date	Feb 22, 2018
Grant date	—

Abstract

According to one embodiment of the present invention, a method by which a terminal receives a reference signal for determining a position in an unlicensed band in a wireless communication system can comprise the steps of: receiving positioning reference signal (PRS)-related configuration information transmitted through the cooperation of one or more unlicensed band cells, wherein the PRS-related configuration information includes information on a plurality of sub-bands in the unlicensed band, in which the PRS is transmitted, and information on a PRS transmission period for each of the plurality of sub-bands; receiving and measuring the PRS by using the PRS-related configuration information; and reporting the PRS measurement result to a serving cell.

First claim

What is claimed is:

1 . A method of receiving a reference signal for positioning in an unlicensed band, which is received by a terminal in a wireless communication system, comprising:
receiving positioning reference signal (PRS)-related configuration information transmitted through the coordination of one or more unlicensed band cells, wherein the PRS-related configuration information comprises information on a plurality of subbands within the unlicensed band on which the PRS is transmitted and information on a PRS transmission period for each of the plurality of the subbands; receiving and measuring a PRS using the PRS-related configuration information; and reporting a measurement result of the PRS to a serving cell.

2 . The method of claim 1 , wherein the receiving and measuring the PRS comprises performing PRS blind detection using the PRS-related configuration information.

3 . The method of claim 2 , further comprising receiving information on the number of subbands on which the PRS blind detection is to be performed.

4 . The method of claim 2 , further comprising the step of receiving information on priority of a subband on which the PRS blind detection is to be performed.

5 . The method of claim 1 , wherein the information on the PRS transmission period is common to unlicensed band cells belonging to the same cell group.

6 . The method of claim 1 , wherein the information on the PRS transmission period comprises a transmission period, offset, or a burst length of the PRS.

7 . The method of claim 1 , wherein the PRS-related configuration information comprises information on whether or not the PRS transmission period belongs to channel occupation time for the one or more unlicensed band cells.

8 . The method of claim 7 , wherein the receiving and measuring the PRS comprises performing PRS blind detection during the channel occupation time.

9 . The method of claim 7 , wherein the PRS-related configuration information comprises information on the channel occupation time and information on the PRS transmission period.

10 . The method of claim 1 , wherein the PRS-related configuration information is received through downlink control information via a licensed band cell or an unlicensed band cell.

11 . The method of claim 1 , further comprising determining that a PRS transmission subframe belongs to channel occupation time for the one or more unlicensed band cells when a reservation signal is received in a specific time period.

12 . The method of claim 1 , wherein a PRS transmitted through the one or more unlicensed band cells is transmitted on a resource element where a different unlicensed band cell does not transmit a PRS.

13 . The method of claim 1 , wherein the measurement result of the PRS is independent of a PRS measurement result on a licensed band.

14 . A terminal configured to receive a reference signal for positioning through one or more unlicensed band cells in a wireless communication system, comprising:
an radio frequency (RF) unit; and a processor controls the RF unit to: wherein the processor receives positioning reference signal (PRS)-related configuration information transmitted through the coordination of one or more unlicensed band cells, wherein the PRS-related configuration information comprises information on a plurality of subbands within the unlicensed band on which the PRS is transmitted and information on a PRS transmission period for each of the plurality of the subbands, receives and measures a PRS using the PRS-related configuration information, and reports a measurement result of the PRS to a serving cell.

Assignees

• Lg Electronics Inc

Inventors

• Lee Hyunho
• Park Hanjun
• Kim Bonghoe

Classifications

• H04W24/10

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

• H04W88/02

  Terminal devices · CPC title

• H04W64/00 Primary

  Locating users or terminals {or network equipment} for network management purposes, e.g. mobility management · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04B17/24

  with feedback of measurements to the transmitter · CPC title