JCAS Resource Allocation for Event-Triggered High-Resolution Sensing
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing radio resources for both communication and sensing functions, leading to significant overhead and potential interruptions, particularly in high-resolution radar sensing scenarios.
Innovation Solution
A method for joint communication and sensing (JCAS) systems that opportunistically reuse communication resources for sensing and vice versa, utilizing continuous low-resolution sensing to detect objects and trigger high-resolution sensing only when necessary, with a scheduling mechanism to allocate resources efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If continuous high-resolution sensing is performed, then sensing precision is improved, but resource overhead increases and communication is interrupted
Solution Approach 1:
The patent implements periodic sensing with variable resolution, where the system alternates between low-resolution continuous sensing and high-resolution sensing based on detected events. This periodic switching allows the system to maintain acceptable sensing performance while significantly reducing resource overhead by performing high-resolution sensing only when necessary.
Solution Approach 2:
The patent employs preliminary low-resolution sensing as a screening mechanism before initiating high-resolution sensing. This preliminary action detects potential targets or events of interest, allowing the system to prepare for high-resolution sensing only when needed, thereby reducing overall resource consumption while maintaining sensing precision when required.
2Measurement precision
If high-resolution sensing is performed continuously, then object detection accuracy is improved, but communication data rate decreases
Solution Approach 1:
The system implements periodic high-resolution sensing triggered by events detected during continuous low-resolution sensing. This approach ensures that high-resolution sensing is performed only when objects or events of interest are detected, maintaining object detection accuracy while minimizing interruptions to communication and preserving communication data rate.
Solution Approach 2:
The patent applies partial sensing action by using low-resolution sensing for continuous monitoring and only activating high-resolution sensing partially, when and where needed. This selective application of high-resolution sensing maintains detection accuracy for critical events while avoiding excessive resource consumption that would harm communication performance.
3Reliability
If sensing resources are allocated separately from communication resources, then sensing reliability is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent merges sensing resource allocation with communication resource allocation by implementing a unified resource management framework. This framework coordinates both sensing and communication resources, allowing the system to allocate resources for both functions simultaneously and efficiently, improving resource utilization while maintaining sensing reliability through priority-based allocation.
Solution Approach 2:
The system implements multi-functional resource allocation where the same resource management mechanisms serve both sensing and communication functions. This universal approach allows resources to be dynamically allocated between sensing and communication based on current needs, improving overall resource utilization efficiency while maintaining reliable sensing through guaranteed minimum resource allocation.
4Productivity
If low-resolution sensing is used to reduce overhead, then resource efficiency is improved, but detection capability deteriorates
Solution Approach 1:
The patent uses low-resolution sensing as a preliminary screening tool to identify potential events or objects of interest. This preliminary action maintains resource efficiency by using low-overhead sensing for continuous monitoring, while the detection capability is preserved through subsequent activation of high-resolution sensing when the preliminary low-resolution sensing detects something worthy of further investigation.
Solution Approach 2:
The sensing process is segmented into two stages: continuous low-resolution monitoring and event-triggered high-resolution detection. This segmentation allows the system to maintain resource efficiency during normal operation while preserving detection capability by activating the more capable high-resolution sensing mode when needed, based on triggers from the low-resolution stage.
Data Source
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AI summary
Disclosed is a method comprising transmitting one or more reference signals to one or more user devices; performing preliminary sensing over a sensing area of interest based at least partly on the one or more reference signals; allocating, based at least partly on the preliminary sensing, radio resources for performing sensing with a higher resolution than a resolution of the preliminary sensing; and performing the sensing with the higher resolution over the sensing area of interest by using the allocated radio resources.