Vehicle Wireless Path Selection for Delay-Critical In-Vehicle Data
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Solution Overview
Problem
Existing vehicle wireless communication devices struggle to manage communication delays effectively between in-vehicle devices and external communication devices, leading to a risk of delays exceeding predetermined allowable ranges.
Innovation Solution
A vehicle wireless communication device and communication control method that include a delay characteristic acquisition unit, a delay allowable amount acquisition unit, and a communication path selection unit. These units work together to acquire delay characteristic values for each wireless communication service and allowable delay amounts from in-vehicle devices, then select the most appropriate communication service based on these values to allocate to in-vehicle devices with corresponding allowable delay amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple wireless communication services are used in parallel, then communication reliability is improved, but communication delay management becomes complex and delays may exceed allowable ranges
Solution Approach 1:
The patent segments communication services into multiple types (first type and second type) with different delay characteristics. The communication control unit selectively uses appropriate service types based on delay requirements, dividing the communication management task into distinct segments rather than managing all services uniformly. This segmentation allows the system to handle delay-sensitive and delay-tolerant traffic differently, improving overall reliability while maintaining manageable complexity.
Solution Approach 2:
The communication control unit dynamically selects which wireless communication service type to use based on real-time delay requirements and network conditions. The system can switch between first type services (with smaller delay characteristics) and second type services (with larger delay characteristics) depending on the specific communication needs, creating a dynamic adaptation mechanism that improves reliability without requiring static complex management of all services simultaneously.
2Manufacturing precision
If wireless communication services with smaller delay characteristic values are allocated to in-vehicle devices with smaller allowable delay amounts, then communication delay compliance is improved, but service allocation complexity increases
Solution Approach 1:
The patent changes the parameter of service allocation from generic to parameter-specific by matching delay characteristic values with allowable delay amounts. The communication control unit allocates first type services (with smaller delay characteristics) to in-vehicle devices with smaller allowable delay amounts, and second type services (with larger delay characteristics) to devices with larger allowable delay amounts. This parameter-based allocation ensures delay compliance while using clear matching rules rather than complex optimization algorithms.
Data Source
AI summary
A wireless communication device uses multiple wireless communication services for communication between an in-vehicle device of a vehicle and an external device. The wireless communication device acquires a delay characteristic value for each wireless communication service from a network device. The delay characteristic value is an upper limit of an estimated range of delay time in communication. The wireless communication device acquires an allowable delay amount indicating a length of an allowable communication delay time from the in-vehicle device. The wireless communication device allocates a wireless communication service, which is relatively small in the delay characteristic value among the wireless communication services, to the in-vehicle device that is small in the allowable delay amount.