Aerial UE Uplink Power Control with Paging-Based Gain Updates
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Solution Overview
Problem
Existing wireless networks struggle to efficiently manage uplink power control for unmanned aerial vehicles (UAVs) due to inaccurate path loss estimation and inefficient transmission power adjustments, leading to battery drain and interference.
Innovation Solution
Implementing special serving cell equipment with up-tilted antennas and adjustable transmission gain values, coupled with autonomous uplink power mechanisms and paging messages to update UAVs on network changes, ensuring optimal power control based on location and coverage needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional terrestrial cellular network equipment is used to provide services to aerial UE, then existing network infrastructure can be utilized, but accurate path loss estimation and efficient uplink power control cannot be achieved
Solution Approach 1:
The patent introduces a dedicated uplink power control mechanism specifically for aerial user equipment, differentiating the service quality and control parameters between aerial and terrestrial UEs. The network equipment adjusts transmission power and path loss estimation parameters locally for aerial devices based on their unique propagation characteristics, thereby improving measurement precision while maintaining network adaptability.
Solution Approach 2:
The system dynamically adjusts uplink power control parameters for aerial UE based on real-time conditions such as altitude, location, and network load. The path loss estimation is continuously updated and adapted to reflect changing aerial propagation environments, enabling accurate power control while maintaining flexibility for various aerial device types and scenarios.
2Area of stationary object
If transmission power is increased to improve network coverage for UAVs, then coverage area expands, but battery consumption increases and interference with other systems rises
Solution Approach 1:
The patent changes the transmission power parameter dynamically based on the aerial UE's location, altitude, and coverage requirements. Instead of using fixed high power levels, the system adjusts power parameters continuously to achieve optimal coverage while minimizing energy consumption and interference. This enables the network to expand coverage area when needed while conserving UAV battery power during normal operation.
Solution Approach 2:
The system implements a feedback mechanism where aerial UE reports their location and signal quality to the network equipment. Based on this feedback, the network adjusts transmission power levels to maintain optimal coverage and signal strength while avoiding excessive power consumption. The feedback loop enables real-time optimization of the trade-off between coverage area and energy efficiency.
3Area of stationary object
If transmission power is increased to improve network coverage for UAVs, then coverage area expands, but interference with other wireless systems increases
Solution Approach 1:
The system dynamically adjusts transmission power parameters to minimize interference with other wireless systems while maintaining adequate coverage for aerial UE. The network equipment modifies power levels based on the operational environment, presence of other systems, and regulatory requirements, thereby expanding coverage area when interference levels are acceptable while preventing harmful interference when other systems are present.
Solution Approach 2:
The system performs preliminary assessment of the operational environment before adjusting transmission power. The network equipment evaluates potential interference sources and pre-adjusts power levels to prevent harmful interference with other wireless systems. This preliminary action allows the network to expand coverage area while proactively preventing interference issues before they occur.
4Productivity
If frequent uplink power control adjustments are made to optimize network performance, then network efficiency improves, but signaling overhead and processing complexity increase
Solution Approach 1:
The system implements dynamic uplink power control adjustments that adapt to changing network conditions and aerial device locations. The power control mechanism processes information about UE position, signal quality, and network load to make real-time adjustments. This dynamic approach improves network efficiency by optimizing power levels continuously while managing complexity through automated decision-making based on predefined parameters and algorithms.
Data Source
AI summary
An architecture to provide uplink power control adjustment for aerial user equipment. A method can comprise receiving report data from serving cell equipment, wherein the report data comprises an adjustment in a transmission gain value initiated by the serving cell equipment, based on the adjustment in the transmission gain value, sending, via the serving cell equipment, paging message data to a group of aerial user equipment, and based on the paging message data, instructing the group of aerial user equipment to read newly broadcast signaling messages from serving cell and update their own uplink power control mechanism.