Vehicle Network Connection Power-Saving Modes for Battery Hold Time
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Solution Overview
Problem
Maintaining a connection between a vehicle and a public terrestrial mobile network consumes significant energy, particularly when the vehicle is stationary and the battery is not being recharged, which can deplete the available electrical energy.
Innovation Solution
A method and device that optimize energy consumption by determining and implementing energy-saving modes for the vehicle's communication system based on information about electrical consumption, battery capacity, and desired connection duration, using mechanisms like PSM, DRX, eDRX, and CDRX, and adjusting communication parameters to reduce energy usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle maintains a connection to the network, then communication functionality is preserved, but energy consumption increases
Solution Approach 1:
The patent applies dynamics by making the communication system's operational state adjustable rather than fixed. The network can dynamically switch the vehicle's communication system between active and sleep modes based on current needs, allowing the system to adapt its energy consumption level while maintaining connection reliability when required.
Solution Approach 2:
The patent implements periodic action through scheduled wake-up intervals where the communication system transitions between sleep and active states. The system periodically wakes up to check for messages or perform communications, then returns to sleep mode, creating a rhythmic pattern of activity that reduces overall energy consumption while maintaining periodic connectivity.
2Productivity
If the communication system remains active, then data exchange is enabled, but battery life decreases
Solution Approach 1:
The patent applies partial action by enabling the communication system to perform only the minimum necessary actions to maintain connectivity. Instead of continuous full-operation data exchange, the system executes partial communication cycles during wake periods, performing only essential checks and transmissions, then entering sleep mode to preserve battery life.
Solution Approach 2:
The patent implements parameter changes by modifying the operational parameters of the communication system, specifically transitioning between different power states (active vs. sleep mode) and adjusting wake-up intervals. These parameter adjustments allow the system to balance data exchange productivity with battery life duration based on current operational requirements.
Data Source
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Figure 3
AI summary
The invention relates to a method and a device for communication between a communication system of a vehicle (10) and a public land mobile network (100). To this end, a first piece of information representative of the current power consumption of the vehicle (10) is received; a second piece of information representative of an amount of electricity available in the vehicle (10), for example in the battery of the vehicle (10), is received; and a third piece of information representative of the target time during which the vehicle (10) wishes to remain connected to the network (100) is received. Based on the first, second and third pieces of information, the network (100) determines which power saving mode should be assigned to the communication system of the vehicle (10) so that the vehicle can maintain a connection to the network (10) for the desired time.