V2V Notification Signal Resource Determination Using Modulo Calculations
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Solution Overview
Problem
In vehicle-to-vehicle (V2V) communication systems, there is a delay and unreliability in receiving high-priority notification signals, such as forward collision warnings, due to unknown transmission resources and timing for target vehicles.
Innovation Solution
A method where a first device sends a notification signal to a second device on a target transmission resource determined by calculating a frequency or time domain location within a resource pool, using modulo functions to identify available resources, and optionally scrambling the signal for security and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reference vehicle sends a notification signal to a surrounding target vehicle in a V2V communication system, then the signal can be transmitted to alert potential collision, but the target vehicle has a relatively long delay in receiving the notification signal or even cannot receive the signal due to unknown transmission resources and timing
Solution Approach 1:
The patent applies preliminary action by having the target vehicle pre-configured with the transmission resource for receiving notification signals. The resource is determined in advance based on the target vehicle's identifier and transmission pattern, so when a collision risk is detected, the notification signal can be sent directly to the pre-identified resource without delay for resource selection or detection.
Solution Approach 2:
The patent implements feedback mechanisms where the reference vehicle determines the notification signal transmission resource based on feedback information about the target vehicle's transmission pattern and identifier. This feedback loop ensures the notification signal is sent to the correct resource, improving both reliability and reducing delay.
2Ease of operation
If the target vehicle does not know the transmission resource for notification signals, then the reference vehicle can send the signal, but the target vehicle cannot receive the signal timely and accurately
Solution Approach 1:
The patent applies self-service by enabling the target vehicle to autonomously determine its own notification signal reception resource based on its identifier and transmission pattern. This self-configuration eliminates the need for the reference vehicle to manually select or notify the target vehicle of the transmission resource, simplifying the sending process while ensuring reliable reception.
3Reliability
If the notification signal is sent on a determined transmission resource, then the signal can be delivered reliably, but the system complexity increases due to resource determination calculations
Solution Approach 1:
The patent applies parameter changes by using mathematical transformations (modulo operations) on the target vehicle's identifier and transmission pattern to determine the notification signal transmission resource. This transforms the complex problem of resource selection into a systematic parameter calculation, maintaining reliability while managing complexity through standardized computational rules.
Data Source
AI summary
The present disclosure includes example signal sending and receiving methods and related example devices. One example method includes sending, by a first device, a notification signal to a second device on a target transmission resource, where the target transmission resource includes a third transmission resource determined according to a first transmission resource or a fourth transmission resource determined according to a second transmission resource. The first transmission resource is a resource which the first device uses to send first status information of the first device, and the second transmission resource is a resource which is used by the second device to send second status information of the second device.