Wireless Device Power Management via MAC Beacon and ARP Monitoring
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Solution Overview
Problem
Current power save modes for wireless devices typically focus on maintaining a single layer of network connection, such as the data link connection, while ignoring the requirements of other layers, which can lead to loss of connection and inefficient battery usage as devices constantly scan for network signals.
Innovation Solution
A method and system that selectively activate and deactivate communication subsystems in a wireless device to maintain connections across multiple network layers by monitoring MAC beacon signals and ARP requests, adjusting power save mode parameters based on DTIM values and ARP request frequencies to minimize power consumption while maintaining data link and IP connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the device enters power save mode to minimize power consumption, then battery life is extended, but the device may lose network connection at higher protocol layers
Solution Approach 1:
The device enters power save mode periodically, activating only at specific intervals to monitor beacon signals and respond to ARP requests. This periodic activation pattern allows the device to conserve power while maintaining network connectivity by being available only when necessary for protocol compliance.
Solution Approach 2:
The device monitors beacon signals and ARP request patterns in advance to determine optimal power save parameters. By analyzing the frequency of network traffic and connection requirements beforehand, the device can pre-calculate and configure appropriate wake intervals that maintain connectivity while maximizing power savings.
2Reliability
If the device frequently activates to scan for network signals, then network connection reliability is improved, but power consumption increases
Solution Approach 1:
The device uses feedback from monitored beacon signals and ARP request patterns to dynamically adjust its power save parameters. By continuously analyzing network traffic frequency and connection stability, the device optimizes its activation intervals to maintain reliable connectivity while minimizing unnecessary power consumption from frequent scanning.
3Use of energy by moving object
If the device extends power save duration to maximize battery life, then power consumption is reduced, but delays in receiving broadcast and multicast traffic occur
Solution Approach 1:
The device activates periodically at intervals synchronized with beacon signal transmission and ARP request frequencies. This periodic activation ensures the device receives time-sensitive broadcast and multicast traffic while maintaining extended power save periods between activations, thus balancing power consumption with timely traffic delivery.
Data Source
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AI summary
The invention relates to a system and a method for reducing power consumption of a communication device. The method comprises the following actions in a first and a second cycle: in the first cycle, at an instance in a first period of time monitoring for a Medium Access Control beacon signal relating to the data link layer connection from the transceiver, where the first period allows the device to receive the beacon signal and the first cycle has a frequency based on occurrences of the beacon signal; and in the second cycle, for a second period monitoring for an Address Resolution Protocol request for an Internet Protocol address relating to the network layer communication from the transceiver during the second period, the second cycle having a frequency which is shorter than the frequency of transmission of the ARP from a host in the network.