# US 11,452,013 B2 · Radio network node, wireless device and methods performed therein

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- Number: US 11,452,013 B2
- Document ID: US11452013B2
- Status: Granted
- Kind: B2
- Application number: 16/623,195
- Filed: 2018-06-01
- Published: 2021-05-13
- Granted: 2022-09-20
- Earliest claimed: 2017-06-16
- Assignees: Telefonaktiebolaget L M Ericsson (publ)
- Applicants: Telefonaktiebolaget Lm Ericsson (Publ)
- Inventors: Pradeepa Ramachandra; Helka-Liina Määttanen; Icaro L. J. Da Silva
- Web page: https://patentgrep.com/patent/US11452013B2

## CPC

- H04W 36/00837: {Determination of triggering parameters for hand-off}
- H04B 7/0617: {for beam forming}
- H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]}
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 36/0058: {Transmission of hand-off measurement information, e.g. measurement reports}
- H04W 36/0061: {of neighbour cell information}
- H04W 36/0088: {Scheduling hand-off measurements}
- 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

A method performed by wireless device for handling communication in a wireless communication network is provided. The wireless device obtains an indication indicating control, when to initiate and/or when to stop, use of an additional filtering process for measurements on a beam level for including one or more measurements on a beam level in a measurement report. The wireless device applies the additional filtering based on the obtained indication.

## Claims

### Claim 1

A method performed by a wireless device for handling communication in a wireless communication network, the method comprising:
obtaining an indication indicating control when to initiate, and when to stop use of an additional filtering process for one or more measurements on a beam level for including one or more of the measurements on the beam level in a measurement report, the additional filtering process being a Layer 3 (L3) filtering process;
applying the additional filtering based on the obtained indication; and
generating the measurement report based on the additional filtering,
wherein the indication indicating control is represented by triggering criteria, wherein to initiate the additional L3 filtering process on the one or more measurements on the beam level is represented by initiate L3 filtering on the one or more measurements on the beam level, and wherein the control relates to when to initiate the L3 filtering on the one or more measurements on the beam level, and
wherein the triggering criteria to initiate comprises any one out of:
reception of a message from the radio network node comprising any one out of: a list of cells for which the L3 filtering should be initiated by the wireless device, and a list of beam indices for which the L3 filtering should be initiated by the wireless device,
an event based on serving cell(s) level measurements,
an event based on neighbor cell(s) level measurements,
an event based on relative quality between the serving and the neighbor cell(s),
wherein to stop the additional L3 filtering process on the one or more measurements on the beam level is represented by to stop the L3 filtering on the one or more measurements on the beam level, and wherein the control relates to when to stop the L3 filtering on the one or more measurements on the beam level, and
wherein the triggering criteria to stop comprises any one out of:
reception of a message from the radio network node comprising any one out of: a list of cells for which the L3 filtering should be stopped by the wireless device, and a list of beam indices for which the L3 filtering should be stopped by the wireless device,
an event based on serving cell(s) level measurements,
an event based on neighbor cell(s) level measurements,
an event based on relative quality between the serving and the neighbor cell(s).

### Claim 2 (depends on 1)

The method according to any of the claim 1, further comprising:
transmitting the generated measurement report to a radio network node in the wireless communication network.

### Claim 3 (depends on 1)

The method according to claim 1, wherein:
wherein the triggering criteria comprises an event based on the serving cell(s) level measurements, and
wherein applying the additional filtering based on the obtained indication comprises:
performing cell quality measurements for a serving cell and,
when the quality of that serving cell goes below a threshold, starting to perform the L3 filtering on the one or more measurements on the beam level associated to any one out of: the serving cell, other cells, other configured Secondary Cell(s), SCells, and other neighbor cell(s) the wireless device may already be measuring.

### Claim 4 (depends on 1)

The method according to claim 1, wherein:
wherein the triggering criteria comprises an event based on the neighbor cell(s) level measurements, and
wherein applying the additional filtering based on the obtained indication comprises:
performing cell quality measurements for neighbor cell(s) and,
when the quality of at least one neighbor cell goes above a threshold, starting to perform L3 filtering on the one or more measurements on the beam level associated to that particular cell and/or other neighbor cell(s) that have been detected.

### Claim 5 (depends on 1)

The method according to claim 1,
wherein the triggering criteria comprises an event based on relative quality between the serving and the neighbor cell(s), and
wherein applying the additional filtering based on the obtained indication comprises:
performing cell quality measurements for the serving and the neighbor cell(s) and, at each evaluation period, comparing between the qualities of these cells, and when compared qualities fulfill a threshold, starting to perform L3 filtering on the one or more measurements on the beam level.

### Claim 6 (depends on 1)

The method according to claim 1,
wherein the triggering criteria comprises an event based on the serving cell(s) level measurements, and
wherein applying the additional filtering based on the obtained indication comprises:
performing cell quality measurements for a serving cell and,
when the quality of that serving cell goes above a threshold, stopping to perform the L3 filtering on the one or more measurements on the beam level associated to any one out of: the serving cell, other cells, other configured Secondary Cell(s), SCells, and other neighbor cell(s) the wireless device may already be measuring.

### Claim 7 (depends on 1)

The method according to claim 1,
wherein the triggering criteria comprises an event based on the neighbor cell(s) level measurements, and
wherein applying the additional filtering based on the obtained indication comprises:
performing cell quality measurements for neighbor cell(s) and,
when the quality of at least one neighbor cell goes below a threshold, stopping to perform L3 filtering on the one or more measurements on the beam level associated to that particular cell and/or other neighbor cell(s) that have been detected.