Handover performance when serving aerial user equipment over advanced networks

Patent metadata

Field	Value
Publication number	US-12464419-B2
Application number	US-202217662564-A
Country	US
Kind code	B2
Filing date	May 9, 2022
Priority date	May 9, 2022
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

An architecture to improving handover performance when servicing unmanned aerial vehicles over advanced networks. A method can comprise determining a first group of frequencies that serving cell equipment is capable of supporting, identifying a first frequency of the first group of frequencies and a second frequency of the first group of frequencies based on determining a probability value associated with the first frequency and the second frequency overlapping, determining a second group of frequencies that are supported by an unmanned aerial vehicle determining that the unmanned aerial vehicle is using the first frequency to communicate with the serving cell equipment, determining handover serving cell equipment for the unmanned aerial vehicle based on tracking data associated with the unmanned aerial vehicle, and instructing the target cell equipment to decrease a first transmission gain value associated with the first frequency and increase a second transmission gain value associated with the second frequency.

First claim

What is claimed is:

1 . A system comprising:
a processor; and a memory that stores instructions that, when executed by the processor, facilitates performance of operations by the processor, the operations comprising: determining a first group of frequencies that first serving cell equipment is capable of supporting, wherein the first group of frequencies comprises a first frequency; identifying that the first frequency of the first group of frequencies and a second frequency of a second group of frequencies are supported by an unmanned aerial vehicle, wherein the first frequency is distinct from the second frequency; determining that the unmanned aerial vehicle is using the first frequency of the first group of frequencies to communicate with the first serving cell equipment; determining that the unmanned aerial vehicle is approaching second serving cell equipment based on tracking data associated with the unmanned aerial vehicle, wherein second serving cell equipment is capable of supporting the second group of frequencies comprising the first frequency and the second frequency; determining a service provided by the first serving cell equipment for the unmanned aerial vehicle is to be transferred in a handover from the first serving cell equipment to the second serving cell equipment in a future time based on a projected trajectory of the unmanned aerial vehicle of the tracking data; determining a likelihood of an intra-frequency interference between the first serving cell equipment and the second serving cell equipment in an overlapping coverage area if the first frequency is used by both the first serving cell equipment and the second serving cell equipment to support the unmanned aerial vehicle; instructing the second serving cell equipment to adjust a transmission gain value associated with the first frequency to reduce the intra-frequency interference in response to the unmanned aerial vehicle being located in the overlapping area between the first serving cell equipment and the second serving cell equipment; and performing the handover of the unmanned aerial vehicle from first serving cell equipment to the second serving cell equipment.

2 . The system of claim 1 , wherein the first serving cell equipment and the second serving cell equipment are special serving cell equipment, and wherein the special serving cell equipment are associated with groups of up tilted antennas.

3 . The system of claim 1 , wherein the first serving cell equipment and the second serving cell equipment are capable of transmitting, using up tilted antennas, at a transmission power value greater than standard serving cell equipment that serve terrestrial based user equipment.

4 . The system of claim 1 , wherein the first serving cell equipment and the second serving cell equipment comprise a group of amplifiers configured as a cascade of amplifiers.

5 . The system of claim 1 , wherein the second serving cell equipment is special serving cell equipment, and wherein, in response to the transmission gain value associated with the first frequency being adjusted, the overlapping coverage area associated with the first frequency associated with the first serving cell equipment is reduced.

6 . The system of claim 1 , wherein the second serving cell equipment is special serving cell equipment, and wherein, in response to the second serving cell equipment receiving an instruction to adjust a transmission gain value for the second frequency, the overlapping coverage area of the second frequency associated with the second serving cell equipment is expanded.

7 . The system of claim 1 , wherein the unmanned aerial vehicle is located in the overlapping coverage area between the first serving cell equipment and the second serving cell equipment, and wherein in response to a transmission gain change associated with the first frequency of the second serving cell equipment, the intra-frequency interference in the overlapping coverage area between first serving cell equipment and the second serving cell equipment is reduced.

8 . The system of claim 1 , wherein the unmanned aerial vehicle is located in the overlapping coverage area between the first serving cell equipment and the second serving cell equipment, and wherein in response to the instructing the second serving cell equipment to adjust the transmission gain value, the unmanned aerial vehicle performs the handover from the first frequency of the first serving cell equipment to the second frequency of the second serving cell equipment.

9 . A method comprising:
determining, by a processor, a first group of frequencies that first serving cell equipment is capable of supporting, wherein the first group of frequencies comprises a first frequency; identifying, by the processor, that the first frequency of the first group of frequencies and a second frequency of a second group of frequencies are supported by an unmanned aerial vehicle, wherein the first frequency is distinct from the second frequency; determining, by the processor, that the unmanned aerial vehicle is using the first frequency of the first group of frequencies to communicate with the first serving cell equipment; determining, by the processor, that the unmanned aerial vehicle is approaching second serving cell equipment based on tracking data associated with the unmanned aerial vehicle, wherein second serving cell equipment is capable of supporting the second group of frequencies comprising the first frequency and the second frequency; determining, by the processor, a service provided by the first serving cell equipment for the unmanned aerial vehicle is to be transferred in a handover from the first serving cell equipment to the second serving cell equipment in a future time based on a projected trajectory of the unmanned aerial vehicle of the tracking data; determining, by the processor, a likelihood of an intra-frequency interference between the first serving cell equipment and the second serving cell equipment in an overlapping coverage area if the first frequency is used by both the first serving cell equipment and the second serving cell equipment to support the unmanned aerial vehicle; instructing, by the processor, the second serving cell equipment to adjust a transmission gain value associated with the first frequency to reduce the intra-frequency interference in response to the unmanned aerial vehicle being located in the overlapping area between the first serving cell equipment and the second serving cell equipment; and performing, by the processor, the handover of the unmanned aerial vehicle from first serving cell equipment to the second serving cell equipment.

10 . The method of claim 9 , wherein the first serving cell equipment and the second serving cell equipment are special serving cell equipment, and wherein the special serving cell equipment are associated with groups of up tilted antennas.

11 . The method of claim 9 , wherein the first serving cell equipment and the second serving cell equipment are capable of transmitting, using up tilted antennas, at a transmission power value greater than standard serving cell equipment that serve terrestrial based user equipment.

12 . The method of claim 9 , wherein the first serving cell equipment and the second serving cell equipment comprise a group of amplifiers configured as a cascade of amplifiers.

13 . The method of claim 9 , wherein the second serving cell equipment is special serving cell equipment, and wherein, in response to the transmission gain value associated with the first frequency being adjusted, the overlapping coverage area associated with the first frequency associated

Assignees

• At&T Technical Services Company Inc

Inventors

• Vivanco Daniel

Classifications

• H04W36/08

  Reselecting an access point · CPC title

• H04W24/08 Primary

  Testing, {supervising or monitoring} using real traffic · CPC title

• H04W84/06

  Airborne or Satellite Networks (space-based or airborne stations H04B7/185) · CPC title

• H04B17/27

  for locating or positioning the transmitter · CPC title

• H04B17/318

  Received signal strength · CPC title