Micro-Cell Base Station Rapid On/Off State Duration Determination
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Solution Overview
Problem
Current energy-saving methods for base stations are time-consuming and inadequate for intensive small cell deployment scenarios, affecting terminal measurements and increasing power consumption, as terminals struggle to accurately determine the duration of rapid on/off states of micro-cell base stations.
Innovation Solution
A method for determining the duration of rapid on/off states of micro-cell base stations by detecting physical layer downlink control information and designated pilot signals on each sub-frame, allowing terminals to accurately assess the state and duration of micro-cell base stations, reducing invalid detection and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If rapid on/off switching of small cells is implemented to reduce interference and improve energy efficiency, then energy efficiency is improved, but terminal measurement accuracy deteriorates and power consumption increases
Solution Approach 1:
The network side performs preliminary actions by notifying the terminal of the small cell's state transition timing and duration before the actual switching occurs. This allows the terminal to proactively adjust its detection strategy, entering low-power states during known off-periods and focusing measurements during known on-periods, thereby maintaining measurement accuracy while reducing power consumption.
Solution Approach 2:
The system implements feedback mechanisms where the network side provides state information to the terminal, enabling the terminal to adapt its behavior based on this information. The terminal uses the notified state transitions to optimize its detection activities, creating a closed-loop system that balances energy efficiency and measurement accuracy.
2Loss of energy
If rapid on/off switching of small cells is implemented to reduce interference and improve energy efficiency, then energy efficiency is improved, but terminal power consumption increases
Solution Approach 1:
The network side notifies the terminal in advance about the small cell's state transition timing and duration. This preliminary information allows the terminal to proactively enter low-power states during known off-periods and concentrate its detection activities during known on-periods, thereby reducing overall terminal power consumption while maintaining necessary measurement accuracy.
Solution Approach 2:
The system employs periodic action patterns where the terminal's detection activities are synchronized with the periodic on/off switching of the small cell. By aligning detection windows with the cell's active periods and entering sleep modes during inactive periods, the terminal reduces its average power consumption while still capturing necessary measurement data.
3Speed
If single sub-frame level on/off switching is used to achieve faster state transitions, then responsiveness is improved, but terminal detection complexity increases
Solution Approach 1:
The network side acts as an intermediary by providing state transition notification messages to the terminal. This intermediary mechanism conveys the small cell's state information and transition timing, allowing the terminal to simplify its detection logic by relying on these notifications rather than continuously monitoring and inferring state changes, thus reducing detection complexity despite fast switching speeds.
4Device complexity
If multiple sub-frame level on/off switching is used to reduce switching frequency, then terminal detection complexity is reduced, but energy saving effectiveness deteriorates
Solution Approach 1:
The network side performs preliminary action by notifying the terminal of the state transition timing in advance. This allows even multiple sub-frame level switching to be effectively managed, as the terminal can prepare for and respond to each transition with the provided timing information, maintaining energy saving effectiveness without excessive detection complexity.
Solution Approach 2:
The notification mechanism provides feedback to the terminal about the upcoming state transitions and their durations. This feedback enables the terminal to optimize its detection strategy accordingly, ensuring that energy saving goals are met while keeping detection complexity manageable through informed, adaptive behavior.
Data Source
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AI summary
Provided in the present application are a method for determining the duration of a rapid on/off state, a system for determining the duration of a rapid on/off state, and a terminal, wherein the method for determining the duration of a rapid on/off state comprises: when a micro-cell base station is a single subframe-level on/off micro-cell base station, determining in real-time the on/off state of the micro-cell base station in order to determine the duration of the state of the micro-cell base station; and when the micro-cell base station is a multiple subframe-level on/off micro-cell base station, by means or receiving a notification message sent by the micro-cell base station or a macro-cell base station, determining the duration of the state of the micro-cell base station. The technical solution of the present present disclosure allows a terminal, when acquiring the current on/off sate of the micro-cell base station, to further obtain duration information of the current state of the micro-cell base station, thus preventing the terminal from implementing ineffective detection, and reducing the power consumption of the terminal.