Energy Efficient Distributed Antenna System With Sensor-Based Power Control
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Solution Overview
Problem
Existing Distributed Antenna Systems (DAS) face challenges in maximizing energy savings, as current methods of controlling power consumption, such as scheduling-based power off or low power states, do not fully harness available energy savings.
Innovation Solution
An energy-efficient DAS is implemented, which includes antenna devices with embedded sensors to detect environmental factors like presence of people, and a sensor processor to analyze this data and control energy consumption levels, optimizing energy efficiency by adjusting operational modes based on usage demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If scheduling-based power off or low power states are used to control DAS power consumption, then energy consumption is reduced during set times, but available energy savings cannot be fully harnessed
Solution Approach 1:
The system dynamically adjusts the operational state of antenna devices based on real-time sensor data detecting user presence and environmental conditions, transitioning between full power, reduced power, and off states according to actual usage demands rather than fixed schedules
Solution Approach 2:
Sensor devices provide feedback about user presence and environmental conditions to the processor, which then adjusts the power consumption state of antenna devices accordingly, creating a closed-loop control system that optimizes energy savings based on actual conditions
2Reliability
If DAS size, number of frequency bands, output powers and frequency of operation are increased to provide better coverage, then communication coverage is improved, but total consumed energy rapidly rises
Solution Approach 1:
The DAS is divided into multiple independently controllable antenna devices, each equipped with sensors and capable of autonomous power state adjustment, allowing selective power management of individual segments based on local usage conditions
Solution Approach 2:
The system changes operational parameters (power output, operational state) of antenna devices dynamically based on detected usage conditions, adjusting between full power, reduced power, and off states to match actual communication demands
Data Source
AI summary
An energy efficient distributed antenna system (DAS) includes a signal distribution network that includes one or more antenna devices. Each of the one or more antenna devices is configured to receive and transmit signals via an antenna for wireless communications or via a wired connection for wired communications, each of the one or more antenna devices including one or more sensors for sensing an aspect of an environment of the associated antenna device to generate sensor data. The DAS further includes a sensor processor connected with the signal distribution network and configured to receive and process the sensor data, the sensor processor being further configured to control an energy consumption level of the signal distribution network based on the processed sensor data.