Adaptive Power Management for Mobile Wireless Transceivers
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Solution Overview
Problem
Mobile computing devices face increased power consumption due to their diverse functionalities, necessitating effective power management techniques to conserve energy and extend battery life.
Innovation Solution
Implementing a power management system that monitors wireless communication parameters to dynamically switch between power modes, such as power save and extended power save modes, by disabling wireless transceivers during periods of reduced activity, and maintaining connectivity through periodic ARP responses and null data frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless transceivers are continuously enabled to maintain network connectivity, then network connectivity is improved, but power consumption increases
Solution Approach 1:
The system uses periodic beacon events from the wireless network to trigger wake-up cycles. The transceiver remains disabled during intervals between beacons and is periodically enabled to check for network activity, maintaining connectivity while consuming minimal power during idle periods.
Solution Approach 2:
The power management module dynamically adjusts the operational state of wireless transceivers based on real-time monitoring of network parameters and traffic conditions. The system transitions between disabled, periodic wake-up, and continuous operation modes depending on current network demands and activity levels.
2Use of energy by moving object
If power save modes are activated to reduce power consumption, then power consumption is reduced, but system performance deteriorates
Solution Approach 1:
The system continuously monitors wireless communication parameters including data traffic patterns, network activity levels, and transmission quality. Based on this feedback, the power management module intelligently determines when to activate or deactivate power save modes, ensuring performance is maintained when needed while maximizing power savings during low-activity periods.
Solution Approach 2:
The system changes operational parameters of the wireless transceiver based on monitored conditions. When power save mode is activated, parameters such as transmission power, receiver sensitivity, and operational frequency are adjusted to maintain acceptable performance while reducing power consumption. The system can rapidly switch between parameter sets to adapt to changing conditions.
3Use of energy by moving object
If wireless transceivers are disabled during beacon events to conserve power, then power consumption is reduced, but network connectivity may be lost
Solution Approach 1:
The system is configured to wake up precisely at expected beacon event times before completely disabling the transceiver. This preliminary wake-up allows the device to detect beacon signals and network activity status, then decide whether to remain awake or transition to a deeper power save state, ensuring connectivity is maintained when the network is active.
Data Source
AI summary
A mobile computing device is described that includes one or more wireless transceivers, a data traffic monitor module operative to monitor one or more wireless communications parameters, and a power management module operative to select a power mode for the mobile computing device based on the one or more wireless communications parameters. In various embodiments, the power mode comprises an extended power save mode wherein the one or more wireless transceivers are disabled during a plurality of consecutive wireless beacon events. Other embodiments are described and claimed.