Vehicle SRWC Link Switching for Multi-Device Protocol Compatibility
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Solution Overview
Problem
Vehicles equipped with wireless and telematics equipment often struggle to manage connections from multiple mobile devices using different wireless protocols, leading to communication challenges due to protocol incompatibilities and frequency limitations.
Innovation Solution
A method for establishing short range wireless communication between a vehicle and multiple mobile devices involves channel switching, where an existing link with one device is temporarily terminated to establish a new link with another device using a different protocol, allowing for compatibility with various devices by using transceivers operating at different frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vehicle maintains a wireless link with a first mobile device, then communication with the first device is established, but the vehicle cannot simultaneously establish a link with a second mobile device using a different protocol
Solution Approach 1:
The system dynamically switches between different wireless communication channels and protocols based on the connection requests received. When a second mobile device requests connection using a different protocol, the system transitions from the first protocol to the second protocol, enabling adaptability to multiple device types while managing connection quantity through temporal separation.
Solution Approach 2:
The system implements periodic connection establishment and termination across different protocols. The first link is temporarily disconnected, the second link is established, and then the first link is re-established after a brief interruption. This periodic switching allows the vehicle to serve multiple devices with different protocols sequentially rather than simultaneously.
2Adaptability or versatility
If the vehicle disconnects the first SRWC link to establish the second SRWC link, then protocol compatibility is improved, but communication continuity with the first device is interrupted
Solution Approach 1:
The system performs preliminary disconnection of the first link before establishing the second link, and then promptly re-establishes the first link after the second link is formed. This preliminary action sequence minimizes the interruption duration while ensuring both devices can be connected, balancing protocol compatibility with communication continuity.
Solution Approach 2:
The system rushes through the disconnection and reconnection process as quickly as possible. The temporary disconnection of the first link is minimized in duration, allowing the vehicle to quickly switch protocols for the second device and then rapidly restore the first connection, thereby reducing the impact on communication continuity.
Data Source
AI summary
A mobile communication system and a method of establishing short range wireless communication (SRWC) between a vehicle and a mobile device. The method includes: establishing a first short range wireless communication (SRWC) link between the vehicle and a first mobile device; receiving at the vehicle a request to establish a second SRWC link from a second mobile device; and disconnecting the first SRWC link between the vehicle and the first mobile device and, in response to the request, establishing the second SRWC link between the vehicle and the second mobile device.