Dynamic Uplink Power Adjustment for Wireless Interference
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Solution Overview
Problem
Existing wireless communication systems face challenges in optimizing transmission power levels, leading to call connection failures, reduced throughput, and increased interference due to static power adjustments that do not account for real-time or near real-time conditions.
Innovation Solution
Dynamic management of interference and coverage by optimizing power values for physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH) transmissions based on real-time or near real-time conditions in a radio cluster, using computing devices to determine and adjust power values based on various network conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static power level adjustments are made within a cell, then the transmission power level is maintained at a fixed value, but the power level cannot be optimized for real-time or near real-time conditions resulting in either too low throughput or too high interference and battery drain
Solution Approach 1:
The patent implements dynamic power level adjustments by continuously monitoring uplink transmission performance metrics (such as block error rates, signal-to-interference ratios, and throughput) and automatically adjusting the nominal power levels for PUSCH and PUCCH transmissions in real-time or near real-time, allowing the system to adapt to changing network conditions rather than using static power levels
Solution Approach 2:
The system employs feedback mechanisms where uplink transmission performance is measured and reported back to the network device, which then uses this feedback to adjust power levels for subsequent transmissions, creating a closed-loop control system that optimizes power levels based on actual transmission outcomes
2Reliability
If transmission power level is increased to overcome noise and interference, then call connection success rate improves, but interference to other cells increases and battery drain accelerates
Solution Approach 1:
The patent applies different power level adjustments to different cells based on their specific conditions, such as uplink transmission performance, interference levels, and traffic load. Each cell's nominal power levels are optimized independently based on local measurements and requirements, allowing targeted power increases only where necessary rather than blanket increases across the entire network
Solution Approach 2:
The system dynamically changes power level parameters (P0_PUSCH and P0_PUCCH values) based on measured uplink transmission performance. When performance metrics indicate poor uplink quality, the system adjusts these parameters to increase power levels; when performance is adequate, parameters are reduced to minimize interference and power consumption
3Reliability
If maximum transmission power level is used to ensure coverage, then signal quality improves, but the wireless device cannot operate efficiently and battery drain increases
Solution Approach 1:
The patent implements partial power adjustment by increasing nominal power levels only when and where needed to achieve adequate uplink transmission performance. Instead of using maximum power levels continuously, the system applies power increases selectively based on measured performance deficiencies, using just enough additional power to achieve the required signal quality while minimizing unnecessary energy consumption
Data Source
AI summary
Wireless communications for optimizing transmission power levels are described. Uplink transmission power levels for a wireless device may be dynamically adjusted based on conditions in a source cell and one or more neighboring cells. Transmission power levels may be increased or decreased gradually, and optimized power levels may be achieved, based on conditions in a source cell and one or more neighboring cells.