Severity-Based Alert Frequency Allocation for V2X Interference Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems fail to effectively mitigate inter-band interference to receivers by allocating alerts in the frequency domain based on the severity of the alerts, leading to desense issues in vehicles using V2X technology.
Innovation Solution
A method and apparatus for wireless communication that determines the severity level of an alert transmission and selects frequency domain transmission resources based on the presence of neighboring systems, spacing higher severity level transmissions further apart from neighbor channels to minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If alert transmissions are allocated in frequency domain without considering severity, then frequency resources are used efficiently, but inter-band interference to receivers increases causing desense issues
Solution Approach 1:
The patent applies local quality by differentiating frequency resource allocation based on alert severity levels. High-severity alerts are allocated to frequency resources spaced further from neighbor channels (where interference is lower), while low-severity alerts use resources closer to channels. This creates localized quality variations in resource allocation matching the specific needs of different alert types, resolving the contradiction between reliable reception and interference mitigation.
Solution Approach 2:
The patent changes the parameter of frequency resource selection based on alert severity. By dynamically adjusting which frequency resources are used for transmission depending on the severity level, the system optimizes both reliability and interference reduction. High-severity alerts use frequency resources with greater spacing from neighbor channels, while low-severity alerts use resources with less spacing, thereby resolving the technical contradiction.
2Reliability
If frequency domain resources for high severity alerts are spaced further from neighbor channels, then interference is reduced, but available frequency resources for transmission decrease
Solution Approach 1:
The patent segments the frequency resource pool into different allocation zones based on proximity to neighbor channels. Resources are divided into high-interference zones (closer to neighbor channels) and low-interference zones (further from neighbor channels). This segmentation allows the system to assign appropriate resources to different alert severity levels, ensuring high-severity alerts use protected resources while low-severity alerts utilize resources closer to channels, thus resolving the contradiction between reliability and resource quantity.
Solution Approach 2:
The patent dynamically changes the frequency resource allocation parameter based on alert severity. By adjusting which frequency resources are assigned to transmissions depending on whether alerts are high or low severity, the system maximizes the use of available resources while protecting critical communications. This parameter-based allocation resolves the contradiction by optimizing resource utilization across different service requirements.
3Ease of operation
If all alerts are transmitted on available channels without severity-based allocation, then transmission simplicity is maintained, but desense issues occur in V2X vehicles
Solution Approach 1:
The patent applies preliminary action by pre-determining severity levels for different alert types and pre-allocating appropriate frequency resources based on those severity levels. This preliminary classification and resource assignment automates the interference mitigation process, maintaining operational simplicity while effectively reducing desense interference through intelligent, pre-planned resource allocation strategies.
Solution Approach 2:
The system performs self-service by automatically determining alert severity and selecting appropriate frequency resources without requiring complex manual intervention. The automated severity-based resource allocation mechanism maintains ease of operation while inherently protecting against desense interference through intelligent, self-managing resource selection.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A transmitting device may select frequency domain resources for an alert transmission based on a severity level of the alert transmission. The transmitting device may determine a severity level of an alert transmission to be transmitted on one or more available channels. The transmitting device may determine a presence of one or more systems configured to transmit on one or more neighbor channels of the one or more available channels. The transmitting device may select, for the alert transmission, frequency domain resources within the one or more available channels based on the presence of the one or more systems and the severity level. The frequency domain resources for a highest severity level transmission are spaced further apart from the one or more neighbor channels in the frequency domain than resources for a lower severity level transmission. The transmitting device may transmit the alert transmission on the frequency domain resources.