Dynamic Bandwidth Allocation in Vehicle Communication Systems
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Solution Overview
Problem
Current vehicle communication systems overdesign resources, leading to underutilization and increased costs due to static allocation of bandwidth, which does not adapt to varying connection requirements.
Innovation Solution
A dynamic allocation method for transmission capacities in a communication system with a hierarchical structure, where a global communication management coordinates local communication administrations to allocate resources based on real-time demands, allowing for flexible reassignment of bandwidth and quality parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission capacity is allocated statically based on worst-case analysis, then quality of service requirements are met, but resource utilization is low and costs increase
Solution Approach 1:
The patent implements dynamic bandwidth allocation where the communication system adjusts transmission capacity in real-time based on actual connection requirements. Instead of static worst-case allocation, the system continuously monitors usage and reassigns bandwidth, allowing the same physical channel to provide different quality levels to different connections depending on current demand and priorities.
Solution Approach 2:
The system changes the allocation parameters of transmission capacity dynamically. The communication management device modifies bandwidth assignments, priority levels, and quality parameters based on real-time connection requirements, transforming the rigid static allocation into a flexible parameter-adjustable system that meets QoS requirements without overprovisioning.
2Reliability
If transmission capacity is allocated statically in advance, then connection requirements are met, but flexibility to react to current requirements is lost
Solution Approach 1:
The patent establishes a dynamic bandwidth allocation mechanism where the communication management device continuously monitors connection status and adjusts transmission capacity assignments in real-time. This allows the system to adapt to changing requirements, reassigning bandwidth from low-priority to high-priority connections as needed, thereby maintaining both quality and flexibility.
Solution Approach 2:
The system implements feedback mechanisms where the communication management device receives information about actual connection usage and priority changes, then uses this feedback to adjust bandwidth allocations. This closed-loop control enables the system to react to current requirements and maintain optimal resource distribution.
3Reliability
If overcapacity is provided to meet worst-case scenarios, then all connection requirements are satisfied, but costs increase due to underutilized resources
Solution Approach 1:
The patent replaces static overprovisioning with dynamic allocation that adjusts capacity to actual demand. The communication system continuously optimizes bandwidth assignments, ensuring sufficient capacity for active connections while releasing or reducing capacity for inactive or low-priority connections, thereby eliminating waste while maintaining reliability.
Solution Approach 2:
The system dynamically discards excess capacity assignments when connections are inactive or low-priority, and recovers this capacity for use by active high-priority connections. This resource recovery mechanism transforms previously wasted overcapacity into usable bandwidth, reducing overall resource consumption while maintaining service guarantees.
Data Source
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AI summary
The system has a set of logical connections realized over a transmission line, where the transmission line has partial lines with limited transmission capacity. Each of local communication administrations (200, 300) is assigned to one of the partial lines and each of the logical connections, where the administration assigns a determined transmission capacity. A global communication administration (100) is designed for co-ordinating the assignment of transmission capacities by the local communication administrations according to a preset pattern. An independent claim is also included for a communication method for a motor vehicle.