Group-Based Wireless Access Control for Bluetooth Connection Limits
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Solution Overview
Problem
Wireless access-control mechanisms, such as those using Bluetooth technology, face limitations in handling multiple connections simultaneously, leading to delays and poor user experience during peak times due to physical connection limitations and authentication times.
Innovation Solution
A method where a wireless device creates a 'group' of authorized devices, allowing them to pass through a passage barrier without individual authentication by providing identification information to the access-control mechanism, which then verifies and grants access to all members of the group without further communication, using a timeout mechanism to manage non-authenticated entries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless access-control mechanisms use Bluetooth technology for authentication, then users can gain access through the passage barrier, but the physical limitation of ten pre-established connections causes delays during crowded times
Solution Approach 1:
The system performs preliminary actions by pre-establishing Bluetooth connections with multiple authorized devices before peak access times. During crowded periods, these pre-established connections allow users to pass through without real-time authentication delays, as the connection setup has already been completed in advance.
Solution Approach 2:
The authentication process is segmented into two phases: a pre-establishment phase where connections are created in advance, and an access phase where pre-connected devices can pass through quickly. This segmentation allows the system to handle multiple concurrent connections efficiently by separating the time-consuming setup from the rapid access execution.
2Reliability
If the access-control mechanism authenticates non-bonded devices, then security is maintained, but authentication takes up to 5 seconds causing poor user experience
Solution Approach 1:
Bonding relationships are established in advance during non-peak times, performing the security verification and authentication setup beforehand. During peak access times, these pre-bonded devices can pass through quickly since the thorough authentication has already been completed, reducing wait time while maintaining security standards.
Solution Approach 2:
The system dynamically adjusts authentication requirements based on the device's bonding status. Bonded devices receive expedited access with minimal verification, while non-bonded devices undergo full authentication. This dynamic approach optimizes both security and speed based on the specific access scenario.
3Productivity
If the access-control mechanism allows multiple simultaneous connections, then more users can access during peak times, but the Bluetooth technology physical limitation of ten connections is exceeded
Solution Approach 1:
The system segments the connection management by maintaining a small core of pre-established Bluetooth connections (within the ten-connection limit) for peak-time rapid access, while using alternative communication channels for initial setup and coordination. This allows the system to effectively handle more than ten users during peak times without exceeding Bluetooth's physical connection limit.
Solution Approach 2:
The system introduces an intermediary mechanism where a gateway or coordinator device manages the Bluetooth connections on behalf of multiple users. Instead of requiring ten separate direct connections to the access control mechanism, the intermediary handles authentication and coordination, allowing more users to access through a smaller number of active Bluetooth connections.
Data Source
AI summary
An access-control mechanism, wireless device, and method for controlling the access-control mechanism and wireless device is provided herein. During operation the wireless device will create a “group” of devices that will be allowed to enter through a passage barrier without authentication. When authenticating with the access-control mechanism, the wireless device will prove the access-control mechanism with a list of credentials (e.g., identification information) for each device within the group. The access-control mechanism will then determine if every device on the list is allowed entry. If so, non-authenticated entry for a number of devices/people through the passage barrier will be allowed. The number of non-authenticated devices/people allowed to enter will be equal to a number of devices that are in the group.