Mobile Device Vehicle Link Selection via Angle of Arrival
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Solution Overview
Problem
Existing systems that use mobile computing devices to communicate with vehicles for actions like unlocking doors consume resources and may experience interference when multiple vehicles are in proximity, as they establish unnecessary high power links with all available vehicles, leading to inefficient power usage and potential coexistence issues.
Innovation Solution
The mobile computing device uses a low power radio to establish initial connections with multiple vehicles, measures metrics such as signal strength, signal-to-noise ratio, and angle of arrival, and prioritizes a vehicle with a consistent angle of arrival over time for a high power UWB link establishment, indicating the intended vehicle for use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mobile computing device establishes UWB links with all available vehicles, then the device can perform actions with any vehicle, but unnecessary resources are consumed and interference occurs
Solution Approach 1:
The system performs preliminary scanning and identification of available vehicles using low-power communication before establishing high-power UWB links. This preliminary action allows the device to identify the intended vehicle in advance, avoiding unnecessary establishment of high-power links with all vehicles, thus reducing power consumption while maintaining the ability to communicate with multiple vehicles when needed
Solution Approach 2:
The system dynamically adjusts its communication strategy based on real-time conditions. Instead of statically establishing links with all vehicles, the device dynamically selects which vehicles to establish UWB links with based on factors such as user intent, proximity, and current operational needs, optimizing power consumption while preserving adaptability
2Reliability
If the mobile computing device establishes UWB links with all available vehicles, then comprehensive coverage is achieved, but coexistence issues and interference occur
Solution Approach 1:
The system extracts or separates the link establishment process into two stages: initial detection using low-power communication and subsequent high-power UWB link establishment only with the selected intended vehicle. This extraction removes the harmful interference that would occur if all high-power links were established simultaneously, while still achieving reliable communication with the target vehicle
Solution Approach 2:
The system introduces an intermediary selection mechanism that mediates between multiple available vehicles and the UWB link establishment. This intermediary process evaluates which vehicle should receive the high-power link based on various criteria, preventing direct interference between multiple simultaneous UWB links while ensuring reliable communication with the chosen vehicle
3Reliability
If the mobile computing device uses high power radio for all vehicles, then communication reliability is improved, but resource consumption increases
Solution Approach 1:
The system applies different communication qualities to different vehicles based on local conditions. Instead of uniformly using high-power radio for all vehicles, the device uses high-power communication only locally with the intended vehicle where reliability is critical, while using low-power communication for other vehicles or initial scanning, thus reducing overall power loss while maintaining communication reliability where needed
Data Source
AI summary
Disclosed are methods, systems, and computer-readable medium to perform operations for selecting a device to prioritize for a high power link. The operations include detecting, in proximity of a mobile device, a first and second available devices. The operations also include establishing a respective connection with each of the first and second available device using a first radio access technology (RAT). Further, the operations include determining, using the respective connections, one or more metrics associated with first available device and the second available device, where the one or metrics comprise a respective angle of arrival at the mobile device corresponding to the first available device and the second available device. Further, the operations include determining, based at least on the one or more metrics, to establish a high power link with the first available device using a second RAT, where the second RAT utilizes more power than the first RAT.