# US 2019/0174341 A1 · Measurement gap enhancements for bl/ce ues

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- Number: US 2019/0174341 A1
- Document ID: US20190174341A1
- Status: Published application
- Kind: A1
- Application number: 16/186,358
- Filed: 2018-11-09
- Published: 2019-06-06
- Earliest claimed: 2017-11-10
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Amith CHINCHOLI; Murali MENON; Liangchi HSU; Nitin PANT
- Web page: https://patentgrep.com/patent/US20190174341A1

## CPC

- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04B 17/336: Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
- H04W 36/0088: {Scheduling hand-off measurements}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 4/70: Services for machine-to-machine communication [M2M] or machine type communication [MTC]
- H04W 24/02: Arrangements for optimising operational condition
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION

## Abstract

Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE). The method generally includes determining a scheduled occurrence of a measurement gap, wherein the UE measures neighbor cell signal strength during the measurement gap, and adjusting the measurement gap based on at least one criterion.

## Claims

### Claim 1

A method of wireless communication for a user equipment (UE), comprising:
determining a scheduled occurrence of a measurement gap, wherein the UE measures neighbor cell signal strength during the measurement gap; and
adjusting the measurement gap based on at least one criterion.

### Claim 2 (depends on 1)

The method of claim 1, wherein subframes scheduled for the UE are not received by the UE during the measure gap, and wherein adjusting the measurement gap comprises at least one of:
extending the measurement gap, comprising extending a length of time of the measurement gap;
skipping the measurement gap;
terminating the measurement gap early;
postponing the measurement gap; or
scheduling a new measurement gap outside the scheduled occurrence of the measurement gap.

### Claim 3 (depends on 2)

The method of claim 2, wherein the at least one criterion is based, at least in part, on a priority of subframes expected to conflict with the measurement gap.

### Claim 4 (depends on 2)

The method of claim 2, wherein the UE signals to a base station information regarding the extended measurement gap.

### Claim 5 (depends on 4)

The method of claim 4, wherein the information indicates an extended length of time of the measurement gap for the UE and a frequency of occurrence of the extended measurement gap among a number of measurement gaps.

### Claim 6 (depends on 4)

The method of claim 4, wherein the UE, before the extended measurement gap, signals the base station that the UE will use an extended measurement gap of length L at an indicated system frame number (SFN) and subframe number (SN).

### Claim 7 (depends on 4)

The method of claim 4, wherein the UE, after the extended measurement gap, signals the base station that the UE used an extended measurement gap of length L at an indicated system frame number (SFN) and subframe number (SN).

### Claim 8 (depends on 2)

The method of claim 2, wherein the extending the measurement gap comprises scheduling a measurement gap of length L based at least in part on a metric.

### Claim 9 (depends on 8)

The method of claim 8, wherein L comprises the length of time for the scheduled measurement gap or a number of subframes for the scheduled measurement gap.

### Claim 10 (depends on 9)

The method of claim 9, wherein the metric comprises serving cell carrier-to-interference-and-noise-ratio (CINR) or signal-to-interference-and-noise-ratio (SINR).

### Claim 11 (depends on 8)

The method of claim 8, further comprising:
measuring neighbor cell signal strength during the extended measurement gap; and
terminating the extended measurement gap early based at least in part on comparing the measured neighbor cell signal strength with a threshold.

### Claim 12 (depends on 8)

The method of claim 8, further comprising dynamically setting a number of cells to measure in each measurement gap.

### Claim 13 (depends on 3)

The method of claim 3, further comprising performing downlink (DL) processing operations during remaining measurement gaps that are not extended.

### Claim 14 (depends on 3)

The method of claim 3, wherein scheduling a new measurement gap outside the scheduled occurrence of the measurement gap is based at least in part on comparison of downlink signal quality with at least one threshold.

### Claim 15

An apparatus for wireless communication at a user equipment (UE), comprising:
at least one processor configured to:
determine a scheduled occurrence of a measurement gap, wherein the UE measures neighbor cell signal strength during the measurement gap, and
adjust the measurement gap based on at least one criterion; and
memory coupled to the at least one processor.

### Claim 16 (depends on 15)

The apparatus of claim 15, wherein subframes scheduled for the UE are not received by the UE during the measure gap, and wherein the at least one processor configured to adjust the measurement gap comprises the at least one processor configured to perform at least one of:
extending the measurement gap, comprising extending a length of time of the measurement gap;
skipping the measurement gap;
terminating the measurement gap early;
postponing the measurement gap; or
scheduling a new measurement gap outside the scheduled occurrence of the measurement gap.

### Claim 17 (depends on 16)

The apparatus of claim 16, wherein the at least one criterion is based, at least in part, on a priority of subframes expected to conflict with the measurement gap.

### Claim 18 (depends on 16)

The apparatus of claim 16, wherein the UE signals to a base station information regarding the extended measurement gap.

### Claim 19 (depends on 18)

The apparatus of claim 18, wherein the information indicates an extended length of time of the measurement gap for the UE and a frequency of occurrence of the extended measurement gap among a number of measurement gaps.

### Claim 20 (depends on 18)

The apparatus of claim 18, wherein the UE, before the extended measurement gap, signals the base station that the UE will use an extended measurement gap of length L at an indicated system frame number (SFN) and subframe number (SN).

### Claim 21 (depends on 18)

The apparatus of claim 18, wherein the UE, after the extended measurement gap, signals the base station that the UE used an extended measurement gap of length L at an indicated system frame number (SFN) and subframe number (SN).

### Claim 22 (depends on 16)

The apparatus of claim 16, wherein the extending the measurement gap comprises scheduling a measurement gap of length L based at least in part on a metric.

### Claim 23 (depends on 22)

The apparatus of claim 22, wherein L comprises the length of time for the scheduled measurement gap or a number of subframes for the scheduled measurement gap.

### Claim 24 (depends on 23)

The apparatus of claim 23, wherein the metric comprises serving cell carrier-to-interference-and-noise-ratio (CINR) or signal-to-interference-and-noise-ratio (SINR).

### Claim 25 (depends on 22)

The apparatus of claim 22, wherein the at least one processor is further configured to:
measure neighbor cell signal strength during the extended measurement gap; and
terminate the extended measurement gap early based at least in part on comparing the measured neighbor cell signal strength with a threshold.

### Claim 26 (depends on 22)

The apparatus of claim 22, wherein the at least one processor is further configured to dynamically set a number of cells to measure in each measurement gap.

### Claim 27 (depends on 17)

The apparatus of claim 17, wherein the at least one processor is further configured to perform downlink (DL) processing operations during remaining measurement gaps that are not extended.

### Claim 28 (depends on 17)

The apparatus of claim 17, wherein scheduling a new measurement gap outside the scheduled occurrence of the measurement gap is based at least in part on comparison of downlink signal quality with at least one threshold.

### Claim 29

An apparatus for wireless communication at a user equipment (UE), comprising:
means for determining a scheduled occurrence of a measurement gap, wherein the UE measures neighbor cell signal strength during the measurement gap; and
means for adjusting the measurement gap based on at least one criterion.

### Claim 30

A computer-readable medium for wireless communication at a user equipment (UE), the computer-readable medium comprising code, when executed by at least one processor, the code causes the at least one processor to:
determine a scheduled occurrence of a measurement gap, wherein the UE measures neighbor cell signal strength during the measurement gap, and
adjust the measurement gap based on at least one criterion.
