V2P Reception Timing Window for Battery and Delay Trade-off
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Solution Overview
Problem
In vehicle-to-pedestrian (V2P) communication, existing technologies face challenges in minimizing battery consumption while ensuring timely message reception, leading to a trade-off between power-saving and service delays in wireless communication systems.
Innovation Solution
A method and device for configuring a reception timing window for V2P messages, aligning the reception timing with the transmission timing to efficiently receive messages without delays while minimizing battery consumption, by modifying the discontinuous reception (DRX) operation to include a specific time window for monitoring V2P messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If DRX is configured to minimize battery consumption, then power-saving is improved, but message reception delay increases
Solution Approach 1:
The patent applies preliminary action by configuring the reception timing window in advance based on the transmitting timing of V2P messages. The pedestrian UE is pre-configured with the window position and duration, allowing it to activate its receiver only during this predetermined interval, thus avoiding continuous monitoring while ensuring timely message reception.
Solution Approach 2:
The patent implements dynamics by making the reception timing window configurable and adaptable. The window's position and duration can be adjusted based on the transmitting timing, allowing the system to dynamically optimize the balance between power consumption and reception timeliness rather than using fixed DRX parameters.
2Loss of time
If continuous monitoring is used to ensure timely message reception, then service delay is reduced, but battery consumption increases
Solution Approach 1:
The patent extracts the essential reception function from continuous monitoring by isolating it to a specific reception timing window. Instead of maintaining continuous receiver activity, the system extracts only the necessary time interval for message reception, discarding the energy-consuming continuous monitoring while preserving the timeliness requirement.
Solution Approach 2:
The patent applies periodic action by configuring the reception timing window to occur at specific intervals based on the transmitting timing of V2P messages. This periodic reception pattern allows the pedestrian UE to activate its receiver only when messages are expected, rather than maintaining continuous monitoring, thus reducing power consumption while ensuring timely reception.
Data Source
AI summary
In vehicle-to-everything (V2X) communication or vehicle-to-pedestrian (V2P) communication, a first user equipment (UE) transmits, at a transmission timing, first data for a specific logical channel, and determines a reception timing window on the basis of the transmission timing. A second UE transmits second data in a specific time interval that is within the reception timing window or is prior to the reception timing window, and the first UE monitors the reception timing window in order to receive the second data.