US 2019/0058523 A1 · MOBILE NETWORKING METHOD AND SYSTEM FOR MINIMIZING INTERFERENCE

Abstract

The invention provides a mobile networking method and system for minimizing interference. The mobile networking method comprises the following steps: unmanned aerial vehicles establish connection and communication with ground base stations through a wireless relay method; connection and communication between the unmanned aerial vehicles are established through a wireless self-networking method; multiple unmanned aerial vehicles cooperate to form a cellular network to provide wireless network services for users; the unmanned aerial vehicles receive a received signal strength indicator fed back by user equipment and measure the angle of arrival of a signal beam from the user equipment; the main lobe of a signal is made to aim at the direction of arrival of service users and the null is made to aim at the direction of arrival of interference signals through a mobile interference alignment method and a beam forming method, and thus the optimal hovering position is searched out. The invention has the following beneficial effects: interference between adjacent cells is reduced through the mobility of the unmanned aerial vehicle sub-base stations, and existing wireless network equipment is mainly adopted and no professional equipment is needed, so that the method and system have extremely high universality.

Claims10

Dependent claims

A mobile networking method for minimizing interference, comprising the following steps:

S1:
unmanned aerial vehicles establish connection and communication with ground base stations through a wireless relay method;
S2:
connection and communication between the unmanned aerial vehicles are established through a wireless self-networking method;
53:
multiple unmanned aerial vehicles cooperate to form a cellular network to provide wireless network services for users;
S4:
the unmanned aerial vehicles receive a received signal strength indicator fed back by user equipment and measure the angle of arrival of a signal beam from the user equipment;
S5:
the unmanned aerial vehicles share the measurement information obtained in step S4, a cellular network signal for service users of a specific unmanned aerial vehicle is regarded as a desired signal, cellular network signals of other unmanned aerial vehicles are regarded as interference signals, the main lobe of the desired signal is made to aim at the direction of arrival of the service users and the null is made to aim at the direction of arrival of the interference signals through a mobile interference alignment method and a beam forming method, and thus an optimal hovering position is searched out;
S6:
when the position of the user equipment changes, step S4 and step S5 are repeated to search out the optimal hovering position again.

9 more elements

A mobile networking system for minimizing interference, comprising:

a signal acquisition module, wherein unmanned aerial vehicles are equipped with multiple antennas and acquire signals from user equipment as well as channel state information (CSI);
a signal analysis module, wherein the signal analysis module is used for determining the direction of arrival of the user equipment through the multiple signal classification (MUSIC) algorithm;
a signal processing module, wherein the signal processing module achieves beam forming through precoding according to known signal state information;
a position searching module, wherein the position searching module is used for assisting each unmanned aerial vehicle in searching out a hovering position where interference to other unmanned aerial vehicles is small through a random hill climbing algorithm.

1 more element

Dependencies are inferred from the claim text.

Mobile networking method and system for minimizing interference

Life of this patent

Mobile networking method and system for minimizing interference

Life of this patent

Abstract

Claims10