# US 11,122,456 B2 · Method for adjusting mobility-related parameters, a user equipment and a base station

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- Number: US 11,122,456 B2
- Document ID: US11122456B2
- Status: Granted
- Kind: B2
- Application number: 16/651,118
- Filed: 2018-09-26
- Published: 2020-07-16
- Granted: 2021-09-14
- Earliest claimed: 2017-09-27
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Jing Wang; Hanning Wang; Liu Liu; Wuri A. Hapsari
- Web page: https://patentgrep.com/patent/US11122456B2

## CPC

- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 24/02: Arrangements for optimising operational condition
- H04W 36/0085: {Hand-off measurements}
- H04W 36/30: by measured or perceived connection quality data
- H04W 64/006: {with additional information processing, e.g. for direction or speed determination}
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Provided are a method for adjusting mobility-related parameters performed by a user equipment, a user equipment, a method for adjusting mobility-related parameters performed by a base station or a base station. The method for adjusting mobility-related parameters performed by a user equipment includes: determining a speed and a height of the user equipment; and adjusting mobility-related parameters of the user equipment according to the speed and height. The method for adjusting mobility-related parameters performed by a base station includes: receiving location information reported by a user equipment; and adjusting mobility-related parameters of the user equipment according to the location information, wherein the location information is reported by the user equipment in response to occurrence of a predetermined event or at a period related to a speed and/or a height of the user equipment.

## Claims

### Claim 1

A terminal capable of aerial communication, comprising:
a transmitter that transmits a measurement report to a base station; and
a processor that controls the transmission of the measurement report according to whether or not an event defined based on a height of the terminal occurs,
wherein the processor triggers the transmission of the measurement report in a case that a trigger type of the measurement report is event-triggered and the event occurs, and
wherein an occurrence condition for the event is that a difference between the height of the terminal and a hysteresis value is greater than a height threshold.

### Claim 2 (depends on 1)

The terminal of claim 1, wherein:
the occurrence condition for the event is that a sum of the height of the terminal and a hysteresis value is less than a height threshold.

### Claim 3 (depends on 1)

The terminal of claim 1, wherein:
location information of the terminal is included in the measurement report, and the location information includes a horizontal speed and a vertical speed of the terminal.

### Claim 4 (depends on 1)

The terminal of claim 1, wherein:
the processor further controls the transmission of the measurement report according to a number of cells in which an event related to Radio Resource Management (RRM) measurement is triggered within a predetermined period of time.

### Claim 5 (depends on 4)

The terminal of claim 4, wherein:
the processor triggers the transmission of the measurement report in a case that the number of the cells is above a preset threshold.

### Claim 6

A wireless communication method for a terminal capable of aerial communication, the wireless communication method comprising:
transmitting a measurement report to a base station;
controlling the transmission of the measurement report according to whether or not an event defined based on a height of the terminal occurs,
wherein the terminal triggers the transmission of the measurement report in a case that a trigger type of the measurement report is event-triggered and the event occurs, and
wherein an occurrence condition for the event is that a difference between the height of the terminal and a hysteresis value is greater than a height threshold.