Protocol Interval Scheduling for Radar-Communication Coexistence
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Solution Overview
Problem
The increasing demand for efficient communication in vehicular ad hoc networks and automotive radar systems has led to concerns about high transmission traffic in specific frequency bands, necessitating strategies to optimize transmission intervals in medium access protocols to manage bandwidth effectively.
Innovation Solution
A system that identifies non-transmission-designated intervals in a protocol cycle, allowing a node to schedule transmissions during these intervals, thereby optimizing bandwidth usage and reducing interference, using a processor and memory modules to retrieve and analyze information about transmission intervals and schedule transmissions accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If transmission intervals are increased to ensure sufficient energy for radar operations, then radar energy availability is improved, but communication throughput deteriorates
Solution Approach 1:
The protocol cycle is segmented into transmission-designated intervals and non-transmission-designated intervals. This segmentation allows radar operations to occur during non-transmission intervals while communications occur during transmission intervals, enabling both functions to operate with sufficient energy without direct conflict.
Solution Approach 2:
The system dynamically schedules transmissions during non-transmission-designated intervals based on available duration greater than a threshold, allowing flexible adaptation to varying radar energy requirements and communication demands rather than using fixed intervals.
2Productivity
If more nodes transmit during the same frequency band, then network utilization is improved, but interference and collisions increase
Solution Approach 1:
The system uses periodic protocol cycles with alternating transmission and non-transmission intervals. Nodes transmit during designated non-transmission intervals within these periodic cycles, which distributes transmissions over time and reduces simultaneous collisions while maintaining high network utilization.
Data Source
AI summary
A system for exploiting a non-transmission-designated interval in a cycle of a protocol can include a processor and a memory. The memory can store a retrieval module, an alternative transmission determination module, and a schedule module. The retrieval module can cause the processor to retrieve, by a specific node associated with a set of nodes in a network, information about the set. The information can include, for a node in the set, identifications of a frequency and a time slot of a transmission-designated interval in a cycle of the protocol. The alternative transmission determination module can cause the processor to determine, based on the information, an existence, in the set, of a non-transmission-designated interval that has a duration greater than a threshold duration. The schedule module can cause the processor to schedule, in response to the existence, the specific node to produce a transmission during the non-transmission-designated interval.