Host Device Tunnelling for Bluetooth Peripheral Sharing
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Solution Overview
Problem
Existing Bluetooth communication systems face complexity and security issues when sharing peripheral units between devices, requiring multiple pairings and lacking secure access for client devices not connected to the Bluetooth piconet.
Innovation Solution
A tunnelling process is implemented using a host device with a server transport module and a client device with a client transport module, allowing automatic pairing of client devices with multiple peripheral units without user intervention, leveraging existing hardware and ensuring secure communication by relying on the security of the client-device host-device connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If handover mechanisms are used for extending Bluetooth connection to client device, then access to peripheral units is extended, but device complexity and pairing complexity increase
Solution Approach 1:
The host device serves as an intermediary between the client device and peripheral units. The host device maintains existing Bluetooth connections with multiple peripheral units and relays communication between the client device and these peripheral units, eliminating the need for the client device to directly pair with each peripheral unit.
Solution Approach 2:
The host device performs multiple functions: it acts as a Bluetooth controller for the piconet, maintains connections with multiple peripheral units, provides tunneling services for the client device, and manages packet routing between different communication protocols, thereby enabling universal access without increasing client device complexity.
2Reliability
If pairings are required for each peripheral unit, then connection security is maintained, but ease of operation deteriorates
Solution Approach 1:
The host device acts as a security intermediary that has already established secure connections with peripheral units. It validates and relays commands from the client device, maintaining security through the existing secure host-peripheral connections while simplifying client device operation.
Solution Approach 2:
Secure pairings are performed in advance between the host device and peripheral units before the client device needs to access them. This preliminary security establishment eliminates the need for client device to perform multiple pairings, simplifying the operation while maintaining security through pre-established secure connections.
3Adaptability or versatility
If multiple peripheral units are added to piconet, then system functionality increases, but pairing complexity and security management worsen
Solution Approach 1:
The host device serves as a central intermediary that manages all connections to multiple peripheral units. It handles packet routing, protocol translation, and security management for all peripheral units, allowing the client device to access any peripheral unit through the host without increasing pairing or security management complexity.
Solution Approach 2:
Multiple separate pairing and security management processes are merged into a single host device management system. The host device consolidates control over all peripheral units, allowing centralized security policies and simplified access management for the client device regardless of the number of peripheral units.
Data Source
Figure 1
AI summary
A communication between a client device (2) and a peripheral unit (14) uses tunnelling over another communication mode. The other communication mode is implemented between the client device and a host device (1), in addition to a communication mode implemented between the host device and the peripheral unit. The host device and the client device are each provided with additional communication modules (3-6), at application level and transport level. Security issues against intrusions into the communication may be implemented by the modules added to the host or client unit.