Base Station Power Control via QoS Load Thresholds
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Solution Overview
Problem
Wireless service providers face high operational expenses due to idle equipment in areas with varying demand for wireless services, as they provision networks to support peak traffic loads, leading to unnecessary power consumption when demand is low.
Innovation Solution
Implementing a system that dynamically powers on and off pico-cellular base stations based on quality-of-service (QOS) load thresholds and geographic coverage areas, allowing handover of users from high-load pico-cellular to macro-cellular base stations when demand is low, and vice versa, to optimize resource allocation and reduce power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless networks are provisioned to support peak traffic load, then sufficient coverage is provided during high-demand periods, but power is wasted when equipment remains idle during low-demand periods
Solution Approach 1:
The base station's operational state is dynamically adjusted based on real-time QOS load conditions. The system transitions the base station between active and idle states according to whether the QOS load exceeds or falls below the threshold, allowing the network to adapt its power consumption to actual traffic demands while maintaining coverage reliability
Solution Approach 2:
The system changes the operational parameter (power state) of the base station based on the QOS load parameter. When QOS load exceeds the threshold, the base station remains active; when it falls below, the base station transitions to idle state, optimizing the balance between coverage reliability and energy consumption
2Loss of energy
If base stations are powered off to save power, then energy consumption is reduced during low-demand periods, but coverage and service quality deteriorate when demand increases
Solution Approach 1:
The system continuously monitors the QOS load parameter and uses this feedback to control the base station's power state. The feedback loop ensures that the base station is activated when QOS load exceeds the threshold (indicating high demand) and deactivated when it falls below (indicating low demand), maintaining coverage reliability while reducing energy waste
Solution Approach 2:
The base station's power management is automated based on its own operational load conditions. The system self-determines when to activate or deactivate the base station by comparing its QOS load against the threshold, eliminating the need for manual intervention and enabling automatic optimization of the reliability-energy tradeoff
Data Source
AI summary
A radio access network (RAN) may determine that a quality-of-service (QOS) load of a first base station exceeds a QOS load high threshold. The RAN may further determine that a set of wireless communication devices (WCDs) served by the first base station are located within a geographic area nearby a second base station. The RAN may additionally determine that the set of WCDs are responsible for at least a predefined portion of the QOS load of the first base station, and may power on the second base station. If at some point a second QOS load of the second base station falls below a QOS load low threshold, the RAN may facilitate handover of at least one of the WCDs served by the second base station from the second base station to the first base station, and may power off the second base station.