# US 2021/0175985 A1 · Method and apparatus for measuring signal quality in wireless communication system

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- Number: US 2021/0175985 A1
- Document ID: US20210175985A1
- Status: Published application
- Kind: A1
- Application number: 16/768,047
- Filed: 2018-11-29
- Published: 2021-06-10
- Earliest claimed: 2017-11-29
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Sukhyon YOON; Kijun KIM; Hyunsoo KO; Eunsun KIM; Sangwon KIM; Youngdae LEE
- Web page: https://patentgrep.com/patent/US20210175985A1

## CPC

- H04B 17/24: with feedback of measurements to the transmitter
- H04B 17/309: Measuring or estimating channel quality parameters
- H04B 17/327: Received signal code power [RSCP]
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 56/00: Synchronisation arrangements
- H04W 72/04: Wireless resource allocation
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Disclosed are a method and an apparatus for measuring signal quality in a wireless communication system.

## Claims

### Claim 1

A method for measuring signal quality by a communication device in a wireless communication system, the method comprising:
receiving information on a plurality of frequencies for transmitting synchronization signal block (SSB); and
based on that a first bandwidth part (BWP) among a plurality of BWPs configured for the communication device is activated and the first BWP includes at least one frequency among the plurality of frequencies, measuring the signal quality based on at least one SSB transmitted at the frequency included in the first BWP.

### Claim 2 (depends on 1)

The method of claim 1,
wherein the receiving the information on the plurality of frequencies comprises receiving a radio resource control (RRC) configuration message including measurement object information, and
wherein the measurement object information includes the information on the plurality of frequencies.

### Claim 3 (depends on 1)

The method of claim 1,
wherein the measuring the signal quality comprises measuring at least one of reference signal received power (RSRP) or reference signal received quality (RSRQ) based on the at least one SSB transmitted at the frequency included in the first BWP.

### Claim 4 (depends on 1)

The method of claim 1,
wherein based on that a BWP activated for the communication device is switched from the first BWP to a second BWP and the second BWP includes at least one frequency among the plurality of frequencies, a measurement result based on an SSB transmitted at the frequency included in the second BWP among the plurality of frequencies and a measurement result based on the SSB transmitted at the frequency included in the first BWP are determined as a measurement result based on an SSB transmitted at a same frequency.

### Claim 5 (depends on 1)

The method of claim 1,
wherein the measuring the signal quality comprises obtaining a value representing the signal quality by combining signal quality values measured based on the at least one SSB transmitted at the frequency included in the first BWP.

### Claim 6 (depends on 5)

The method of claim 5,
wherein the value representing the signal quality includes an average or a maximum value of the signal quality values measured based on the at least one SSB transmitted at the frequency included in the first BWP.

### Claim 7 (depends on 1)

The method of claim 1, further comprising reporting measurement information on the signal quality.

### Claim 8

A communication device for measuring signal quality in a wireless communication system, the communication device comprising:
a memory; and
a processor,
wherein the processor is configured to:
receive information on a plurality of frequencies for transmitting synchronization signal block (SSB); and
based on that a first bandwidth part (BWP) among a plurality of BWPs configured for the communication device is activated and the first BWP includes at least one frequency among the plurality of frequencies, measure the signal quality based on at least one SSB transmitted at the frequency included in the first BWP.

### Claim 9 (depends on 8)

The communication device of claim 8,
wherein the processor is configured to receive a radio resource control (RRC) configuration message including measurement object information, and
wherein the measurement object information includes the information on the plurality of frequencies.

### Claim 10 (depends on 8)

The communication device of claim 8,
wherein the processor is configured to measure at least one of reference signal received power (RSRP) or reference signal received quality (RSRQ) based on the at least one SSB transmitted at the frequency included in the first BWP.

### Claim 11 (depends on 8)

The communication device of claim 8,
wherein based on that a BWP activated for the communication device switches from the first BWP to a second BWP and the second BWP includes at least one frequency among the plurality of frequencies, a measurement result based on an SSB transmitted at the frequency included in the second BWP among the plurality of frequencies and a measurement result based on the SSB transmitted at the frequency included in the first BWP are determined as a measurement result based on an SSB transmitted at a same frequency.

### Claim 12 (depends on 8)

The communication device of claim 8, wherein the processor is configured to obtain a value representing the signal quality by combining signal quality values measured based on the at least one SSB transmitted at the frequency included in the first BWP.

### Claim 13 (depends on 12)

The communication device of claim 12, wherein the value representing the signal quality includes an average or a maximum value of the signal quality values measured based on the at least one SSB transmitted at the frequency included in the first BWP.

### Claim 14 (depends on 8)

The communication device of claim 8, wherein the processor is further configured to report measurement information on the signal quality.