Uplink Power Control in Dense Heterogeneous Networks
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Solution Overview
Problem
In dense heterogeneous wireless networks, high-power wireless devices can cause uplink interference due to their maximum allowable transmit power, which is not efficiently managed when the density of access nodes is high, leading to increased noise levels.
Innovation Solution
A method and system that monitor the density of access nodes within range of wireless devices and adjust the maximum allowable transmit power based on this density, reducing the power for high-powered devices first when they are in a dense cluster of access nodes, thereby minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-power wireless devices transmit at maximum allowable transmit power, then coverage and throughput are enhanced, but uplink interference and noise levels increase in dense networks
Solution Approach 1:
The patent implements dynamic adjustment of maximum allowable transmit power based on real-time monitoring of access node density. The network entity continuously monitors the density of access nodes within range of wireless devices and adjusts the maximum transmit power accordingly - reducing power when density is high and allowing higher power when density is low, thereby resolving the contradiction between maintaining throughput and reducing interference
Solution Approach 2:
The patent changes the power parameter (maximum allowable transmit power) based on network conditions. By monitoring access node density and adjusting the power parameter dynamically, the system adapts to varying network environments, reducing interference in dense areas while maintaining coverage and throughput in less dense areas
2Area of stationary object
If maximum allowable transmit power is increased for high-power devices, then coverage area is expanded, but interference to other devices increases in dense deployments
Solution Approach 1:
The system dynamically adjusts transmit power based on monitored access node density. When high density is detected, maximum allowable transmit power is reduced to minimize interference to other devices. When density is low, higher power is permitted to maintain coverage area, thus dynamically balancing coverage and interference concerns
3Reliability
If high-power devices are deployed to improve network coverage, then service availability is enhanced, but power management complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where the network entity monitors access node density and uses this information to adjust maximum allowable transmit power for high-power devices. This automated feedback loop simplifies power management by removing the need for manual configuration, allowing the system to maintain service availability while automatically adapting power levels to network conditions
Data Source
AI summary
Dynamically limiting uplink transmit power of wireless devices that are known to be within range of a dense cluster or quantity of access nodes. Wireless devices can report identifiers of nearby access nodes. Responsive to determining a large quantity of identifiers from a wireless device in a specific location, the maximum allowable transmit power of the wireless device (or other wireless devices in the same area) can be reduced. Power can be reduced for HPUEs as well as LPUEs.