Wireless Network Node RF Exposure Control
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Solution Overview
Problem
In wireless telecommunications networks, especially large macro base stations, there is a challenge in managing radio frequency exposure levels to comply with regulatory standards. Existing methods rely on manual security controls, which are inefficient and may not ensure compliance in real-time.
Innovation Solution
A method is introduced where a network node in a wireless telecommunications network receives data from sensors indicating the location of objects within its coverage area. Based on access rights and classifications, the node adjusts the transmitter's power and beam angle to maintain electro/magnetic field exposure within regulatory thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual security controls are used to monitor exclusion zones, then access control is maintained, but real-time compliance monitoring and operational efficiency are insufficient
Solution Approach 1:
The patent replaces manual security controls (mechanical/human monitoring system) with an automated sensor-based detection system. Sensors continuously monitor the coverage area to detect objects and determine their classification, automatically triggering transmitter power adjustments without human intervention. This substitution enables real-time compliance monitoring while significantly improving operational efficiency.
Solution Approach 2:
The system enables self-service by allowing the transmitter to automatically adjust its own power levels based on sensor input and object classification. The network node autonomously determines when power reduction is needed and executes the adjustment, eliminating the need for manual intervention and ensuring continuous real-time compliance with regulatory standards.
2Object-affected harmful factors
If transmitter power is reduced to comply with regulatory standards, then radio frequency exposure is controlled, but coverage area and service quality deteriorate
Solution Approach 1:
The patent implements dynamic power adjustment where the transmitter power level changes in real-time based on the presence and classification of detected objects. When no objects or low-risk objects are detected, the transmitter operates at full power to maintain optimal coverage. When high-risk objects are detected, power is reduced temporarily to comply with regulatory standards. This dynamic approach ensures both safety compliance and coverage quality are maintained appropriately.
Solution Approach 2:
The system applies local quality by creating spatially differentiated transmission zones. The transmitter maintains high power levels in areas where no objects are present or only low-risk objects are detected, while locally reducing power only in the specific directions or areas where high-risk objects are detected. This selective local adjustment ensures regulatory compliance without unnecessarily degrading coverage in other areas.
3Extent of automation
If automated sensor-based monitoring is implemented, then real-time compliance is achieved, but system complexity increases
Solution Approach 1:
The patent achieves universality by designing a multi-functional network node that combines sensor reception, object classification, power level determination, and transmitter control in a single integrated system. The same network node that manages normal communication operations also handles safety monitoring and automated power adjustment. This multi-functionality reduces overall system complexity compared to having separate dedicated systems for each function.
Solution Approach 2:
The system merges the safety monitoring function with the existing communication network infrastructure. The sensor array, network node processing, and transmitter control are combined into an integrated system rather than separate standalone components. This merging leverages existing infrastructure and reduces the complexity that would arise from adding completely separate monitoring and control systems.
Data Source
AI summary
This disclosure provides a method of operating a network node in a wireless telecommunications network, wherein the wireless telecommunications network includes a first access point having a transmitter configured to transmit in a first coverage area, including receiving, from a sensor, data indicating a location of an object within the first coverage area of the first access point's transmitter; determining, from a set of access rights including excluded, differentiated restrictions and no restrictions, that the object has the differentiated restrictions access right; responsive to the determination that the object has the differentiated restrictions access right, classifying, from a set of classes including a first class and a second class, the object in the first class, wherein the first class is associated with a first restriction configuration having a first electro and/or magnetic field exposure threshold and the second class is associated with a second restriction configuration having a second electro and/or magnetic field exposure threshold; responsive to the determination that the object is classified in the first class, determining that the object shall use the first electro and/or magnetic field exposure threshold; determining that a value of electro and/or magnetic field exposure for the object exceeds the first electro and/or magnetic field exposure threshold; and causing an adjustment of the first access point so as to reduce the value of electro and/or magnetic field exposure for the object.