Analyte Sensor Proximity Pairing for Low-Power Secure Reconnection
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Solution Overview
Problem
Existing wireless communication protocols for analyte sensors, such as continuous glucose monitoring devices, are vulnerable to security threats, including malicious attacks that can compromise data integrity, privacy, and availability, and suffer from resource inefficiencies due to high power advertisements that cause congestion and unnecessary authentication protocols.
Innovation Solution
Implement proximity pairing techniques using low power general advertisements with a proximity pairing flag to authenticate trusted devices, followed by higher power advertisements for reconnections, and utilize a secondary identifier to prevent unauthorized reconnections, thereby reducing power consumption and congestion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high power general advertisements are used for initial pairing, then the pairing range and reliability are improved, but power consumption increases and congestion occurs
Solution Approach 1:
The patent segments the advertisement process into two distinct phases: initial pairing phase using high power general advertisements to ensure reliable connection establishment, and reconnection phase using low power targeted advertisements for efficiency. This segmentation allows the system to use high power only when necessary for initial pairing, thereby improving pairing reliability while reducing overall power consumption.
Solution Approach 2:
The patent implements preliminary authentication and device identification before establishing the connection. By pre-verifying device identities and authentication credentials before the actual pairing process, the system ensures that high power advertisements are only broadcast to legitimate devices, reducing unnecessary power consumption and congestion from unauthorized devices attempting to connect.
2Area of stationary object
If high power general advertisements are used for initial pairing, then the pairing range is improved, but congestion and resource inefficiency occur
Solution Approach 1:
The patent divides the advertisement process into initial pairing (high power, wide range) and reconnection (low power, targeted) phases. This segmentation ensures that high power advertisements are used only when necessary to establish the initial connection, improving pairing range without causing continuous congestion and resource inefficiency during normal operation.
Solution Approach 2:
The patent implements periodic advertisement broadcasts with varying power levels based on the connection state. During initial pairing, high power advertisements are broadcast periodically to ensure wide coverage. Once paired, the system switches to low power targeted advertisements, reducing resource consumption and congestion while maintaining efficient reconnection capabilities.
3Ease of operation
If traditional authentication protocols are used without proximity verification, then ease of operation is improved, but security is compromised
Solution Approach 1:
The patent performs preliminary proximity verification by checking signal strength and device proximity before proceeding with authentication. This preliminary check ensures that only devices in close proximity can initiate pairing, enhancing security without significantly complicating the user experience, as the verification occurs automatically in the background.
Solution Approach 2:
The patent introduces proximity verification as an intermediary step between device discovery and authentication. This intermediary mechanism ensures that even if traditional authentication protocols are used, an additional layer of security is maintained by verifying that devices are physically close before allowing pairing, thus preventing remote attacks while maintaining ease of operation.
4Reliability
If reconnection uses the same high power advertisements, then connection reliability is improved, but power consumption and congestion increase
Solution Approach 1:
The patent segments the advertisement process into initial pairing (high power) and reconnection (low power) phases. During reconnection, the system uses low power targeted advertisements directed at already-authenticated devices, maintaining connection reliability for paired devices while significantly reducing power consumption and avoiding congestion that would result from continuous high power broadcasts.
Solution Approach 2:
The patent applies different power levels and advertisement strategies to different connection scenarios. For reconnection with authenticated devices, low power targeted advertisements are used, providing sufficient reliability for established connections while conserving energy. This local quality approach ensures that high power is used only where necessary (initial pairing) rather than uniformly for all connection types.
Data Source
AI summary
Techniques and protocols for facilitating wireless secure communications between a sensor system and one or more other devices are disclosed. In certain embodiments, the techniques and protocols include secure proximity pairing techniques with reduced power. A method for pairing an analyte sensor system and one or more display devices includes broadcasting, from the analyte sensor system, for an initial connection, a low power general advertisement including an indication indicating the low power general advertisement is for proximity pairing. The method includes receiving, from a first display device, a connection request message in response to the low power general advertisement; performing an authentication procedure with the first display device; and pairing and bonding with the first display device based on successful authentication with the first display device.