Vehicle OTA Update Routing via Local Repeaters to Cut Data Charges
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Solution Overview
Problem
Existing Over-the-Air (OTA) technology for vehicle software updates faces limitations in using local wireless networks, leading to excessive communication costs and charges due to large update packages.
Innovation Solution
A system and method that utilizes a local wireless network by selecting a repeater within transmission range of the vehicle based on location information, preferentially using electric vehicle charging stations or nearby vehicles for efficient software update package distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire update package is downloaded via modem communication, then the software update can be completed, but excessive communication amount and communication charge are generated
Solution Approach 1:
The update package transmission is segmented into two parts: first, a small portion is downloaded via modem communication to obtain the update package; second, the bulk of the update data is transmitted via Wi-Fi communication from a repeater device. This segmentation reduces modem communication charges while ensuring complete software update delivery.
Solution Approach 2:
A repeater device is introduced as an intermediary between the server and the vehicle. The repeater receives the update package via Wi-Fi and transmits it to the vehicle, enabling local wireless communication for software updates and avoiding excessive modem communication charges.
2Reliability
If the entire update package is downloaded via modem communication, then the software update can be completed, but excessive communication amount is generated
Solution Approach 1:
The communication path is segmented into initial modem communication for obtaining the update package and subsequent Wi-Fi communication for transmitting the bulk update data. This reduces the total communication amount charged to the user by utilizing local wireless networks for the majority of data transfer.
Solution Approach 2:
The repeater acts as an intermediary that enables local Wi-Fi communication between the server and vehicle. By routing update data through the repeater's local wireless network, the system reduces dependency on cellular data networks and minimizes communication amount charges.
3Productivity
If a repeater is selected based on location information, then local wireless network utilization is improved, but system complexity increases
Solution Approach 1:
The server receives location information from the vehicle and uses this feedback to automatically select an appropriate repeater within the vehicle's vicinity. This feedback mechanism enables the system to dynamically adapt to the vehicle's location and optimize Wi-Fi connectivity without requiring complex user intervention.
Solution Approach 2:
The system performs automatic repeater selection and connection establishment without requiring user configuration. The server autonomously identifies suitable repeaters based on location data and manages the Wi-Fi communication setup, simplifying the user experience despite the underlying system complexity.
Data Source
AI summary
A system for controlling a vehicle includes the vehicle for transmitting a software version and location information, and a server that selects a repeater capable of transmitting a new version of a software update package to the vehicle around the vehicle based on the location information when it is determined that update of software is necessary based on the software version received from the vehicle, and makes a request for the selected repeater to transmit the new version of the software update package to the vehicle.