Sidelink Positioning Contribution Indicator for Energy Saving
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Solution Overview
Problem
Existing radio communication technologies face challenges in efficiently waking up sleeping vehicles for precise positioning enhancements while ensuring power saving and timely wake-up for sidelink positioning, as current methods do not effectively manage the sleeping mode to optimize energy consumption and positioning accuracy.
Innovation Solution
A method that deactivates the sleeping mode of apparatuses to transmit position information when suitable, using a contribution indicator to determine the accuracy of the information's contribution to other vehicles' positioning, and then reactivates the sleeping mode, allowing for precise positioning enhancements while minimizing power consumption by strategically waking up vehicles for sidelink positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If vehicles wake up continuously to provide positioning information, then positioning accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic wake-up actions where vehicles transition between sleeping and awake states in cycles. Vehicles wake up periodically to transmit positioning information when needed, then return to sleep mode, achieving a balance between positioning accuracy and power consumption through time-division multiplexing of communication activities.
Solution Approach 2:
The patent employs feedback mechanisms where vehicles monitor their own positioning accuracy and the needs of other vehicles. Based on this feedback, vehicles dynamically adjust their wake-up behavior, waking up only when their positioning information is needed or when their accuracy falls below a threshold, thereby optimizing the trade-off between precision and energy consumption.
2Measurement precision
If vehicles wake up frequently for positioning, then positioning enhancement is improved, but unnecessary traffic on radio channel increases
Solution Approach 1:
The patent applies preliminary actions by having vehicles pre-calculate and prepare their positioning information in advance while in sleep mode. When a vehicle needs to wake up, the positioning data is already ready for immediate transmission, reducing the need for frequent wake-ups and minimizing unnecessary radio channel traffic while maintaining positioning enhancement capabilities.
Solution Approach 2:
Vehicles autonomously determine when to wake up based on their own positioning accuracy requirements and the detected needs of other vehicles. This self-service mechanism prevents unnecessary wake-ups and radio transmissions by allowing each vehicle to independently manage its own communication behavior based on real-time conditions.
3Measurement precision
If contribution indicator is updated continuously, then positioning accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent applies partial action by updating the contribution indicator only when necessary, such as when a vehicle's positioning accuracy changes significantly or when another vehicle's positioning request is detected. This selective updating approach maintains positioning accuracy while reducing the processing complexity associated with continuous monitoring and calculation of contribution indicators.
Data Source
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AI summary
There is provided a method comprising: deactivating (110) a sleeping mode of an apparatus; transmitting (114), after deactivation of the sleeping mode, a position information, if an associated contribution indicator indicates that the position information is suited to contribute to the determination of an position of at least one another apparatus; and activating (104), after the transmission of the position information, the sleeping mode.