V2X Bandwidth Reliability via Dynamic Licensed Spectrum Selection
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Solution Overview
Problem
Vehicle-to-everything (V2X) communication systems face challenges in achieving reliable and high bandwidth direct communication channels without relying on wireless telecommunications network base stations, which is essential for supporting increasing data throughput requirements in vehicle communications.
Innovation Solution
The use of licensed bands from a vehicle's wireless telecommunications network service provider to increase the bandwidth of direct communication channels, by selecting a licensed band when the shared spectrum's bandwidth is insufficient, and utilizing a contention-based protocol to access and switch between shared and licensed spectrum dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shared spectrum is used for direct communication channels, then cost is reduced, but bandwidth reliability is insufficient
Solution Approach 1:
The system dynamically switches between shared spectrum and licensed band based on bandwidth requirements and availability. The wireless communication device monitors the shared spectrum bandwidth and automatically transitions to licensed band when shared spectrum is insufficient, and vice versa when shared spectrum becomes available. This dynamic adaptation resolves the contradiction by making bandwidth reliability dependent on real-time conditions rather than fixed allocation.
Solution Approach 2:
The wireless communication device is configured to perform multiple functions: it can communicate over shared spectrum for cost-effective operation, access licensed bands for guaranteed bandwidth reliability, and switch between modes based on needs. This multi-functionality allows the system to achieve both cost reduction and bandwidth reliability by selecting the appropriate communication mode for each situation.
2Reliability
If licensed band is used to increase bandwidth, then bandwidth reliability is improved, but cost increases
Solution Approach 1:
Instead of continuously using licensed band for all communications, the system applies partial action by using licensed band only when shared spectrum bandwidth is insufficient. The device monitors shared spectrum availability and activates licensed band access only for the portion of communication needs that cannot be met by shared spectrum, thereby reducing overall spectrum resource consumption while maintaining bandwidth reliability when needed.
3Productivity
If higher bandwidth is allocated, then data throughput increases, but channel interference increases
Solution Approach 1:
The communication system segments the spectrum resources into shared spectrum and licensed band portions. By dividing the bandwidth allocation strategy, the system can achieve high data throughput through licensed band (which has dedicated resources and less interference) when needed, while using shared spectrum for lower-priority communications. This segmentation allows high throughput without proportionally increasing channel interference.
Data Source
AI summary
Techniques described herein improve direct communication channel reliability in a vehicle-to-everything (V2X) communication. The techniques include a (wireless communication) device that uses a first licensed band to perform a cellular network communication through a first interface (e.g., Uu), and further uses a shared spectrum to perform a V2X communication through a direct communication channel interface. The device then monitors and compares a bandwidth requirement of the V2X communication with a bandwidth of the shared spectrum. In response to the bandwidth that is less than the bandwidth requirement, the device selects a second licensed band that includes a bandwidth that is at least equal to the bandwidth requirement. Further, the selected second licensed band is different from the first licensed band to avoid channel interference. In other embodiments, the device uses the licensed band to directly establish the V2X communication.