Method for measuring wireless communication state in wireless communication system and apparatus therefor

Patent metadata

Field	Value
Publication number	US-2016249243-A1
Application number	US-201415031654-A
Country	US
Kind code	A1
Filing date	Nov 7, 2014
Priority date	Nov 7, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

The present invention relates to a method and an apparatus for performing, by a terminal having multiple antennas, measurement reporting in a wireless communication system. In particular, the method comprises the steps of: receiving a multicast-broadcast single-frequency network (MBSFN) reference signal; performing a measurement for radio resource management for each of the multiple antennas, using the MBSFN reference signal; and reporting the result of the measurement, wherein the result of the measurement is determined on the basis of the measurement values of all diversity branches corresponding to the multiple antennas.

First claim

What is claimed is:

1 . A method for performing measurement reporting by a user equipment with a plurality of antennas in a wireless communication system, the method comprising:
receiving an MBSFN (multicast-broadcast single-frequency network) reference signal; performing a measurement for RRM (radio resource management) on each of the plurality of the antennas by using the MBSFN reference signal; and reporting a result of the measurement, wherein the result of the measurement is determined based on measurement values of all diversity branches corresponding to the plurality of the antennas.

2 . The method of claim 1 , wherein the measurement comprises at least one selected from the group consisting of an MBSFN RSRP (reference signal received power) measurement, an MBSFN RSRQ (reference signal received quality) measurement, and an MBSFN RSSI (received signal strength indicator) measurement.

3 . The method of claim 2 , wherein the result of the measurement comprises a sum of MBSFN RSRPs of all individual diversity branches.

4 . The method of claim 2 , wherein the result of the measurement comprises a sum of MBSFN RSRQs of all individual diversity branches.

5 . The method of claim 2 , wherein the result of the measurement comprises a linear average of MBSFN RSRPs of all individual diversity branches.

6 . The method of claim 2 , wherein the result of the measurement comprises a linear average of MBSFN RSRQs of all individual diversity branches.

7 . The method of claim 2 , wherein the plurality of the antennas includes a first antenna branch and a second antenna branch and wherein the result of the measurement comprises a sum of MBSFN RSRQs to which a correction value for correcting an antenna imbalance between the first antenna branch and the second antenna branch is applied.

8 . The method of claim 7 , wherein the correction value is received through higher layer signaling.

9 . The method of claim 2 , wherein the result of the measurement comprises an MBSFN RSSQ based on a sum of MBSFN RSRPs of all the diversity branches and a linear average of MBSFN RSSIs of all the diversity branches.

10 . A user equipment with a plurality of antennas for performing measurement reporting in a wireless communication system, comprising:
a radio frequency unit; and a processor, wherein the processor is configured to receive an MBSFN (multicast-broadcast single-frequency network) reference signal, to perform a measurement for RRM (radio resource management) on each of the plurality of the antennas by using the MBSFN reference signal, and to report a result of the measurement and wherein the result of the measurement is determined based on measurement values of all diversity branches corresponding to the plurality of the antennas.

Assignees

• Lg Electronics Inc

Inventors

• Kim Youngtae
• Kim Kijun
• Kim Hyungtae
• Park Jonghyun

Classifications

• H04B17/346

  Noise values (signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR] H04B17/336) · CPC title

• H04B7/0478

  Special codebook structures directed to feedback optimisation · CPC title

• H04W4/06

  Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services · CPC title

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W24/10 Primary

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