Altitude-Changeable Object Antenna Power Control
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Solution Overview
Problem
Cellular networks face interference challenges due to altitude-changing objects like drones, which can connect better to multiple nodes at higher altitudes, potentially interfering with terrestrial users and adjacent nodes, requiring effective power control and antenna system configuration to maintain communication link quality and reduce interference.
Innovation Solution
A communication system that dynamically controls transmit power and adjusts antenna radiation patterns based on altitude, location, and orientation of altitude-changing objects, using GPS and gyroscope data to optimize communication links and minimize interference with adjacent nodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmit power is increased to improve communication link quality for altitude-changing objects, then communication reliability is improved, but interference with terrestrial users and adjacent nodes increases
Solution Approach 1:
The patent implements dynamic transmit power control that adjusts power levels based on the altitude-changing object's current altitude, orientation, and location. The system continuously monitors these parameters and modifies transmit power in real-time, transitioning from static to dynamic power management to resolve the contradiction between maintaining link quality and reducing interference.
Solution Approach 2:
The system changes multiple operating parameters simultaneously including transmit power level, antenna radiation pattern, and beamforming characteristics based on altitude and orientation data. By adjusting these parameters dynamically, the system optimizes communication quality at each altitude while minimizing interference to terrestrial users and adjacent cells.
2Object-generated harmful factors
If antenna radiation pattern is adjusted to reduce interference with adjacent nodes, then interference levels are reduced, but communication link quality may deteriorate
Solution Approach 1:
The patent applies local quality by directing antenna radiation patterns to concentrate energy in specific spatial directions based on the altitude-changing object's orientation and position. The system creates directionally selective radiation patterns that optimize signal quality toward the intended receiver while creating nulls or reduced radiation toward adjacent nodes and terrestrial users, thus simultaneously improving link quality and reducing interference.
Solution Approach 2:
The antenna radiation pattern is dynamically adjusted in real-time based on changing altitude and orientation parameters. The system continuously reconfigures beamforming weights and antenna element phases to maintain optimal communication quality while adapting to the moving platform's changing spatial relationship with terrestrial users and adjacent cells.
3Reliability
If multiple antennas are used to improve communication coverage, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic antenna selection and configuration where the system activates only the necessary subset of antennas based on current altitude, orientation, and signal conditions. Rather than continuously operating all antennas, the system dynamically adjusts which antennas are active and how they are configured, reducing complexity while maintaining coverage through adaptive resource allocation.
Data Source
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AI summary
A communication system for an altitude changing object is provided. The communication system can include an antenna system having one or more antennas. The one or more antennas can be associated with a single fixed radiation pattern. The communication system can include one or more processors configured to execute a control routine to perform operations. The operations can include obtaining data indicative of one or more communication parameters associated with the altitude changing object. The operations can include determining a transmit power for each of the one or more antennas based at least in part on the one or more communication parameters. The operations can include controlling the antenna system based at least in part on the transmit power to communicate with a node in the communication network.