Tethering Access Point Power Management via Low-Power Radio Trigger
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Solution Overview
Problem
Existing tethering technologies consume excessive power and fail to efficiently manage data usage among devices, as they typically maintain a constant wireless connection, leading to battery drain and uncontrolled bandwidth usage.
Innovation Solution
Implementing a system where devices use low power radios for initial communication and authentication, activating high power radios only when needed, and employing a challenge/response protocol and shared secret for secure connection, with network usage controlled based on cost and priority.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the access point device maintains a constant wireless connection with high power radio powered on, then network connectivity and responsiveness are improved, but battery life deteriorates due to excessive power consumption
Solution Approach 1:
The system dynamically adjusts the power state of the wireless radio based on connection status. The radio transitions between powered-on state (when connection is active) and powered-off state (when connection is terminated), allowing the system to adapt power consumption to actual operational needs rather than maintaining a fixed high-power state
Solution Approach 2:
The system implements periodic monitoring of connection status and automatically powers off the high power radio when not in use. This periodic on-off cycling based on connection events reduces overall power consumption while maintaining connectivity responsiveness when needed
2Device complexity
If the access point device shares bandwidth equally among tethered devices, then simplicity of implementation is improved, but data usage efficiency deteriorates as actual device needs and costs are not considered
Solution Approach 1:
The system implements feedback mechanisms where the access point device monitors data usage by each tethered device and receives information about cost considerations. Based on this feedback, the system automatically adjusts bandwidth allocation to optimize data usage efficiency while accounting for actual device needs and associated costs
3Reliability
If manual setup steps are required for tethering connections, then connection security and configuration control are improved, but ease of operation deteriorates due to multiple manual steps
Solution Approach 1:
The system implements automatic authentication and connection establishment between devices. Devices automatically recognize each other, perform mutual authentication using shared secrets, and establish secure connections without requiring manual user intervention for each step, thereby maintaining security while dramatically improving ease of operation
Solution Approach 2:
The system pre-configures shared secrets and authentication credentials between devices before actual connection is needed. This preliminary setup allows devices to automatically authenticate and connect securely when brought into proximity, eliminating the need for manual configuration steps during actual tethering operations
Data Source
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AI summary
An access point device is configured to improve usability of tethering, while improving battery life and managing data usage among and by the tethered devices. Both access point devices and client devices can remain in a low power state without a high power radio being powered until a shared network connection is to be used. To establish a connection to a network for the client device, the client device communicates with the access point device over a lower power communication device, such as a low power radio. The access point device activates its higher power radio. The two devices then connect over the high power radio, allowing the client device to then to use the access point device as a router to connect to a computer network.