Vehicle Network Controller Prioritizing Emergency Return Link Data
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Solution Overview
Problem
In wireless communication systems for vehicles, the asymmetry in forward and return link resource demand often leads to insufficient return link resources during emergency situations, causing congestion and hindering effective communication, especially when emergency data needs to be transmitted.
Innovation Solution
Implementing a method to prioritize real-time data streams associated with predefined events, such as emergencies, by allocating system resources based on predefined traffic policies, ensuring that critical data is transmitted promptly and reliably over shared communication links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If greater communication resources are allocated to the forward link to meet passenger network usage demand, then forward link data rate is improved, but return link resources become insufficient for emergency situations
Solution Approach 1:
The system dynamically adjusts resource allocation between forward and return links based on real-time conditions. During normal operation, forward link receives more resources to handle passenger traffic. When an emergency is detected, the system dynamically reconfigures to prioritize return link resources for emergency data transmission, resolving the contradiction between normal operational efficiency and emergency reliability.
Solution Approach 2:
The patent changes the allocation parameters of communication resources based on event type. By detecting predefined events (emergencies, urgent situations), the system modifies resource allocation parameters to ensure critical return link communications can proceed despite the overall asymmetry favoring forward link capacity.
2Reliability
If return link resources are increased to ensure emergency communication capability, then emergency communication reliability is improved, but forward link data rate decreases
Solution Approach 1:
The system performs preliminary detection of predefined events and pre-allocates return link resources before actual emergency communication is needed. This allows the system to maintain forward link capacity during normal operation while having emergency resources ready when needed, avoiding the need to permanently increase return link resources at the expense of forward link performance.
Solution Approach 2:
The system maintains dynamic flexibility in resource allocation, allowing forward link to operate at high capacity during normal conditions while reserving the ability to quickly reallocate resources to return link when emergencies occur, thus avoiding the trade-off of permanently reducing forward link capacity.
3Reliability
If real-time data associated with predefined events is prioritized over other data streams, then emergency data transmission is improved, but scheduling complexity increases
Solution Approach 1:
The patent segments data streams into different priority categories: real-time emergency data associated with predefined events, and non-critical passenger data. This segmentation allows the scheduling system to apply different handling rules to different data types, prioritizing emergency data while maintaining manageable scheduling complexity through clear categorization rather than complex individual data stream management.
Solution Approach 2:
The system introduces an intermediary event detection and classification mechanism that identifies predefined events and tags associated real-time data with high-priority markers. This intermediary layer simplifies the scheduling process by pre-categorizing data based on event type, allowing the scheduler to make priority decisions based on clear event-based criteria rather than analyzing each data stream individually.
Data Source
AI summary
Methods, systems, and devices are described for providing prioritization of real-time data involving forward and return communication links of a vehicle. In embodiments, a multi-user network access terminal serving multiple communication devices on a vehicle via a communication link receives an indication associated with a pre-defined triggering event from a triggering device on a vehicle, identifies real-time data associated with the pre-defined triggering event for transmission via the communication link, prioritizes the real-time data relative to other data associated with the multiple communication devices for transmission via the communication link, and transmits the prioritized real-time data via the communication link. In embodiments, methods, systems, and devices are also described for data prioritization involving network controllers.