Mobile Device Sidelink Reception Pattern Optimization
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Solution Overview
Problem
Battery-powered mobile devices in V2X applications face challenges in power conservation during operation, particularly when receiving data directly from other devices without network infrastructure, leading to inefficient power usage and potential data loss.
Innovation Solution
A mobile device computes and adjusts receive activity patterns based on transmit activity patterns from other devices, switching between active receiving and power-saving states to optimize data reception and conserve power, utilizing sidelink interfaces and timers to manage data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile device continuously monitors the radio interface to ensure data reception, then data reception reliability is improved, but power consumption increases
Solution Approach 1:
The mobile device employs discontinuous reception with periodic monitoring intervals instead of continuous monitoring. The device wakes up at predetermined intervals to check for data transmissions and remains in sleep mode between intervals, thereby reducing power consumption while maintaining data reception capability.
Solution Approach 2:
The monitoring interval is dynamically adjusted based on the observed transmission activity patterns of other devices. When transmissions are frequent, the monitoring interval is shortened to ensure reliable reception. When transmissions are sparse, the interval is extended to save power, making the power consumption adaptive to actual communication needs.
2Use of energy by moving object
If the mobile device reduces monitoring frequency to save power, then power consumption is reduced, but data reception reliability deteriorates
Solution Approach 1:
The device monitors transmission activity patterns from other devices and uses this feedback to intelligently adjust its monitoring intervals. When the device detects that other devices are actively transmitting, it increases monitoring frequency to ensure reliable reception. When transmissions cease, it reduces monitoring frequency to save power, creating a closed-loop adaptive system.
Solution Approach 2:
The device performs preliminary analysis of transmission activity patterns to predict when data transmissions are likely to occur. By preparing and adjusting monitoring intervals in advance based on observed patterns, the device ensures it is in the right state to receive data reliably without needing to maintain high monitoring frequency continuously.
3Use of energy by moving object
If the mobile device switches between active and power-saving states, then power consumption is optimized, but device complexity increases
Solution Approach 1:
The device autonomously determines its own monitoring intervals by observing transmission activity patterns from other devices without requiring external configuration or complex control systems. The device self-adjusts its power management strategy based on the observed communication environment, reducing the need for complex external control mechanisms.
Data Source
AI summary
Aspects of the disclosure provide methods and apparatuses for wireless communication. In some embodiments, a first mobile device can receive a first indication of a first transmit activity pattern associated with a second mobile device that transmits data to the first mobile device via a radio interface without passing through a base station. The first mobile device can compute a first receive activity pattern that is inclusive of at least the first transmit activity pattern. The first mobile device monitors the radio interface according to the first receive activity pattern.