Radio Network Node Sleep Mode Control for QoS
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Solution Overview
Problem
Configuring base stations to sleep effectively while maintaining quality of service requirements is challenging, as existing methods struggle to determine appropriate sleep modes that balance power consumption with service quality, leading to potential delays and unacceptable user experiences.
Innovation Solution
A method is introduced to control the sleep operation of radio network nodes by determining which sleep modes would prevent them from meeting quality of service requirements, preventing operation in incompatible modes, and transitioning to active modes before traffic arrival to ensure timely service delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a base station enters a deep sleep mode to reduce power consumption, then energy savings increase, but the ability to meet quality of service requirements deteriorates due to delayed awakening
Solution Approach 1:
The base station dynamically adjusts its sleep mode based on traffic conditions and QoS requirements. When QoS requirements are present, the base station operates in active mode; when no QoS requirements exist, it transitions to deep sleep mode. This dynamic adaptation resolves the contradiction by making the sleep state conditional rather than fixed.
Solution Approach 2:
The system changes the operational parameters of the base station based on QoS requirements. When QoS requirements are detected, the base station transitions from sleep mode (low power state) to active mode (high power state), changing its operational parameters to meet the required service quality while maintaining energy efficiency when possible.
2Reliability
If a base station operates in active mode continuously to meet quality of service requirements, then service reliability is maintained, but power consumption increases
Solution Approach 1:
The base station alternates between active and sleep modes based on periodic assessment of QoS requirements. Instead of continuous operation, the base station periodically checks for QoS requirements and transitions to sleep mode when none are present, creating a periodic on-off pattern that reduces overall power consumption while maintaining service reliability when needed.
Solution Approach 2:
The patent extracts the QoS requirement assessment as a separate control function that determines base station operation state. By separating the decision-making process (checking for QoS requirements) from the execution (entering or exiting sleep mode), the system can efficiently determine when to consume power and when to save it, resolving the contradiction between continuous operation and energy savings.
3Use of energy by moving object
If a base station uses aggressive sleep modes to maximize power savings, then energy efficiency improves, but the complexity of managing multiple sleep modes and their transitions increases
Solution Approach 1:
The patent applies different operational qualities (sleep modes) to different operational contexts (presence or absence of QoS requirements). Instead of managing complex transitions between multiple sleep modes, the system applies a simple binary decision: if QoS requirements exist, operate actively; if not, enter sleep mode. This local quality approach simplifies the complexity management while maintaining energy efficiency.
Data Source
AI summary
The invention refers to a method for controlling sleep operation of a radio network node (12) that supports multiple sleep modes, the method comprising determining (110) which one or more of the supported sleep modes, if any, would prevent the radio network node (12) from being able to meet requirements on a quality of service, such as a maximum allowable data latency, to be provided by the radio network node (12); and preventing (120) the radio network node (12) from operating in any of the determined sleep modes; the invention further refers to a corresponding network node and a computer program.