V2X Service Coordination Across Frequency Bands Under Bandwidth Limits
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Solution Overview
Problem
Existing V2X communication systems face challenges in efficiently providing both basic and enhanced V2X services due to limited bandwidth in the dedicated ITS spectrum and potential interference between different frequency bands, especially when using licensed frequency bands managed by different mobile network operators.
Innovation Solution
A method and system for controlling V2X communication that utilizes service information in a first frequency spectrum to indicate the availability of V2X services in a second frequency spectrum, allowing vehicles to decide on service utilization based on technical capabilities, geographic location, and usage status, thereby optimizing resource allocation and minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If eV2X services are provided in the dedicated ITS band, then enhanced V2X services can be enabled, but the bandwidth is insufficient and basic ITS services may be adversely affected
Solution Approach 1:
The patent extends V2X communication from a single frequency dimension (dedicated ITS band) to multiple frequency dimensions by introducing licensed frequency bands as an additional layer. This multi-dimensional approach allows eV2X services to operate in licensed bands while basic services continue in the dedicated ITS band, resolving the bandwidth limitation without compromising service quality.
Solution Approach 2:
The patent segments V2X services into two categories: basic V2X services operating in the dedicated ITS band and enhanced V2X services operating in licensed frequency bands. This segmentation allows each service type to utilize appropriate frequency resources independently, preventing resource contention and ensuring sufficient bandwidth for both service categories.
2Quantity of substance
If licensed frequency bands are used for V2X communication, then more bandwidth is available, but devices associated with different MNOs cannot engage in direct communication
Solution Approach 1:
The patent implements a universal service information mechanism that operates across multiple frequency bands and network operators. The service information structure is designed to be operator-agnostic, allowing devices from different MNOs to discover and communicate using the same protocol framework, thereby enabling cross-operator direct communication while utilizing licensed band resources.
Solution Approach 2:
The patent introduces service information as an intermediary layer that mediates communication between devices of different MNOs. This service information contains necessary coordination data that enables direct communication without requiring MNO-specific protocols, effectively bridging the gap between different network operators.
3Adaptability or versatility
If multiple frequency bands are used for V2X services, then service diversity is improved, but coordination between frequency bands becomes complex
Solution Approach 1:
The patent extracts the coordination function into a separate, standardized service information structure that operates independently of the specific frequency bands being used. This extraction simplifies device complexity by providing a universal coordination mechanism that works across all frequency bands without requiring band-specific coordination logic.
Data Source
AI summary
A V2X communication device (41, 42, 43) receives service information (402, 403, 404) in a first frequency spectrum. The service information indicates availability of at least one V2X communication service in a second frequency spectrum. Based on the received service information (402, 403, 404), the V2X communication device (41, 42, 43) controls utilization of one or more V2X communication services by the V2X communication device (41, 42, 43), e.g., whether to start utilizing the at least one V2X service and/or whether to stop utilizing another V2X service.