Base Station Controller Dynamic RF Emission Control
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Solution Overview
Problem
Current methods for calculating maximum radio frequency emissions at base stations are inaccurate, often overestimating emissions by 6 to 10 dB, leading to inefficient use of frequency bands and potential safety concerns due to static assumptions about antenna power and frequency usage.
Innovation Solution
A base station controller that dynamically adjusts radio frequency emissions by obtaining current emission values from individual antennas and frequency bands, comparing them to maximum limits, and reducing emissions if necessary, using a combination of calculation models and measured values to ensure compliance with safety regulations while maximizing network capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static worst-case assumptions are used to calculate maximum radio frequency emissions, then safety limits are conservatively ensured, but accuracy of emission calculation deteriorates with errors of 6 to 10 dB
Solution Approach 1:
The patent transitions from static emission calculations to dynamic real-time monitoring and adjustment. The base station controller continuously monitors actual emission values and dynamically adjusts antenna power settings based on current operating conditions, traffic load, and environmental factors, thereby achieving both accuracy and safety compliance
Solution Approach 2:
The patent implements a feedback mechanism where emission values are continuously measured and fed back to the controller. The controller compares actual emissions against safety limits and adjusts power settings accordingly, creating a closed-loop system that ensures both accurate measurement and reliable safety compliance
2Productivity
If all frequency bands operate at maximum power simultaneously, then network capacity is maximized, but radio frequency emissions exceed safety limits
Solution Approach 1:
The system dynamically adjusts the power level of each frequency band and antenna based on real-time conditions. Instead of operating all bands at maximum power simultaneously, the controller selectively activates bands and adjusts their power levels to match current network demand while staying within emission limits, thereby maintaining high capacity when needed and reducing emissions when possible
Solution Approach 2:
The patent changes operational parameters such as power levels, frequency band activation, and antenna selection based on real-time monitoring. By dynamically adjusting these parameters, the system can operate at high capacity when conditions permit and reduce emissions when safety limits are approached, resolving the contradiction between productivity and harmful emissions
3Productivity
If additional antennas are added to increase network capacity, then frequency band coverage is improved, but emission values and exclusion zone requirements increase
Solution Approach 1:
The patent segments the base station into multiple independently controllable antenna groups or sectors. Each antenna or antenna group can be controlled separately in terms of power level and activation status. This segmentation allows the system to activate only the necessary antennas for current traffic demands, thereby improving frequency coverage when needed while minimizing total emissions by keeping unnecessary antennas at lower power or offline
Solution Approach 2:
The system dynamically selects and adjusts which antennas are active and at what power levels based on real-time network conditions. Instead of all antennas operating at full power continuously, the controller adapts antenna configuration to match current demand, thereby achieving improved frequency coverage when required while reducing overall emission values during periods of lower demand
Data Source
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AI summary
The present invention refers to a base station controller (200) for controlling the radio frequency emission of at least one antenna of a base station of a wireless communication system, comprising an obtaining unit (201) configured to obtain a current emission value of the radio frequency emission of the at least one antenna, and a control unit (202) configured to control the radio frequency emission of the at least one antenna on the basis of the obtained current emission value, as well as a corresponding base station arrangement and method.