Dynamic Access Point Power Control for High-Density Wireless Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-density wireless communication environments, such as stadiums and urban areas, face network congestion and interference issues due to the large number of users, leading to unacceptably low throughput and self-interference from increased access points.
Innovation Solution
A wireless system with dynamically adjustable access-point transmitter power and receiver sensitivity on a user-by-user basis to achieve the highest possible modulation rate and signal-to-noise ratio, using dual mode algorithms for power and modulation rate adjustments, and prioritizing high-rate packets to optimize network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If access point density is increased to achieve desired capacity in high-density environments, then network capacity is improved, but interference between access points increases and frequency re-use potential is nullified
Solution Approach 1:
The patent implements dynamic power adjustment where access points continuously monitor interference levels and adapt their transmit power in real-time. This dynamic behavior allows the system to maintain high network capacity while automatically reducing interference when access point density increases, resolving the contradiction between capacity and interference.
Solution Approach 2:
The system changes the power parameter dynamically based on environmental conditions. By adjusting transmit power levels according to actual interference measurements and user density, the system optimizes the balance between maintaining network capacity and minimizing harmful interference effects.
2Area of stationary object
If higher radio power and high gain antennas are used at base stations to extend range and coverage, then coverage area is improved, but interference to other access points increases in high-density environments
Solution Approach 1:
The patent applies different power levels locally to different access points based on their specific environment and user density. Rather than using uniform high power across all base stations, each access point adjusts its power locally to provide adequate coverage while minimizing interference to neighbors, resolving the contradiction between coverage area and interference generation.
3Adaptability or versatility
If users connect to access points from long distances, then connection flexibility is improved, but signal level decreases and data rates become unacceptably low
Solution Approach 1:
The system implements feedback mechanisms where access points monitor signal quality and user performance metrics. Based on this feedback, the system can identify users with poor signal levels and redirect them to more suitable access points, or adjust power levels to maintain acceptable data rates, thus preserving both connection flexibility and productivity.
Data Source
AI summary
Protocols and algorithms for contention-based adaptive modulation networks, typically used in unlicensed bands. A wireless system in which high modulation rate packets are prioritized over low rate packets. The wireless system is configured to process communication signals from plural user portable devices having wireless access points capable of dynamically adjusting access point transmit power on a user-by-user basis to a minimum level required to achieve a target signal-to-noise ratio from each user portable device irrespective of the interference observed on the link is also disclosed. The wireless system is also capable of dynamically adjusting access point transmitter power and receiver sensitivity on a user-by-user basis to a minimum level required to achieve the highest possible modulation rate.