# US 2014/0192671 A1 · Cell measuring method and information transmitting method therefor

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- Number: US 2014/0192671 A1
- Document ID: US20140192671A1
- Status: Published application
- Kind: A1
- Application number: 14/233,620
- Filed: 2012-06-13
- Published: 2014-07-10
- Earliest claimed: 2011-07-29
- Assignees: LG Electronics Inc.
- Inventors: Suhwan Lim; Manyoung Jung; Yoonoh Yang; Sangwook Lee
- Web page: https://patentgrep.com/patent/US20140192671A1

## CPC

- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 5/001: {the frequencies being arranged in component carriers}
- H04L 5/0023: {Time-frequency-space}
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04L 5/0082: {at predetermined intervals}
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 48/16: Discovering, processing access restriction or access information
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

According to one embodiment of the present invention, provided is a method in which a terminal performs cell measurements. The method may include the steps of: receiving information on a resource restriction pattern indicating a subframe to which a restriction is applied for performing measurement on one or more neighboring cells; determining that a subframe indicated by second information is not configured as a Multimedia Broadcast over Single Frequency Network (MBSFN) subframe for the neighboring cells if an MBSFN configuration of each of the neighboring cells is not known or not clearly indicated; and performing measurements using a plurality of cell-specific reference signals (CRSs) received from the neighboring cells on the subframe which is not configured as the MBSFN subframe.

## Claims

### Claim 1

A cell measuring method of a user equipment (UE), the method comprising:
receiving information of a resource restriction pattern indicating a subframe to which restriction is applied for performing measurement on one or more neighbor cells;
determining that a subframe indicated by second information is not configured as a multimedia broadcast over single frequency network (MBSFN) subframe for the one or more neighbor cells when MB SFN configuration of each of the one or more neighbor cells is not known or not clearly indicated; and
performing measurement using a plurality of cell-specific reference signals (CRSs) received from the one or more neighbor cells on the subframe which is not configured as the MBSFN subframe.

### Claim 2 (depends on 1)

The method according to claim 1, further comprising receiving radio resource configuration dedicated information element (IE) comprising first information of a measurement resource restriction pattern for a primary cell.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the information of the resource restriction pattern is included in a measurement object and is received.

### Claim 4 (depends on 1)

The method according to claim 1, further comprising receiving a neighbor cell configuration information element indicating MBSFN of one or more neighbor cells.

### Claim 5 (depends on 3)

The method according to claim 3, wherein the measurement object further comprises cell list information.

### Claim 6

A method for transmitting information for cell measurement, the method comprising:
configuring a subframe for performing measurement by a serving cell, wherein the subframe configured by the serving cell is different from a subframe for performing measurement on a first neighbor cell; and
transmitting first pattern information of the subframe configured by the serving cell and second pattern information indicating a subframe for performing measurement on the first neighbor cell, to a UE,
wherein:
the first pattern information or the second pattern information indicates a subframe for measurement in a bit 1, and
the first pattern information or the second pattern information indicates at least one subframe for the measurement per frame.

### Claim 7 (depends on 6)

The method according to claim 6, wherein the subframe configured by the serving cell is different from a subframe for performing measurement on a second neighbor cell.

### Claim 8 (depends on 6)

The method according to claim 6, wherein a subframe for performing measurement on the first neighbor cell is different from a subframe for performing measurement on a second neighbor cell.

### Claim 9 (depends on 6)

The method according to claim 6, wherein the configuring of the subframe comprises configuring the subframe based on a group whether neighbor cells are pico cells or macro cells.

### Claim 10 (depends on 6)

The method according to claim 6, wherein the configuring of the subframe is performed in consideration of whether the subframe is configured as an MBSFN subframe.

### Claim 11 (depends on 6)

The method according to claim 6, wherein the pattern information is a time domain measurement resource restriction pattern or measSubframePattern.

### Claim 12 (depends on 6)

The method according to claim 6, wherein the first pattern information is measSubframePattern-Serv or the second pattern information is measSubframePattern-Neigh.

### Claim 13 (depends on 6)

The method according to claim 6, wherein the second pattern information is received via X2 interface based signaling.

### Claim 14

A user equipment (UE) for performing cell measurement, the UE comprising:
a receiver for receiving information of a resource restriction pattern indicating a subframe to which restriction is applied for performing measurement on one or more neighbor cells; and
a controller for determining that a subframe indicated by second information is not configured as a multimedia broadcast over single frequency network (MB SFN) subframe for the one or more neighbor cells when MBSFN configuration of each of the one or more neighbor cells is not known or not clearly indicated, and for performing measurement using a plurality of cell-specific reference signals (CRSs) received from the one or more neighbor cells on the subframe which is not configured as the MBSFN subframe.

### Claim 15

A serving cell base station (BS) for transmitting information for cell measurement, the serving cell BS comprising:
a controller for configuring a subframe for performing measurement, wherein the configured subframe is different from a subframe for performing measurement on a first neighbor cell; and
a transmitter for transmitting first pattern information of the subframe configured by the serving cell and second pattern information indicating a subframe for performing measurement on the first neighbor cell, to a UE, according to control of the controller,
wherein:
the first pattern information or the second pattern information indicates a subframe for measurement in a bit 1, and
the first pattern information or the second pattern information indicates at least one subframe for the measurement per frame.

### Claim 16 (depends on 15)

The serving cell BS according to claim 15, wherein the subframe configured by the serving cell is different from a subframe for performing measurement on a second neighbor cell.

### Claim 17 (depends on 15)

The serving cell BS according to claim 15, wherein a subframe for performing measurement on the first neighbor cell is different from a subframe for performing measurement on a second neighbor cell.
