Adaptive Radar Resource Pool for Interference-Free Co-Existence
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Solution Overview
Problem
Multiple radar devices operating in the same environment experience interference due to overlapping time and frequency resources, leading to reduced detectability of target objects and inefficient multiplexing of radar waveforms, especially in congested scenarios where contention-based approaches like LBT are inefficient.
Innovation Solution
Defining a radar resource pool with non-overlapping subbands of varying frequency and time duration to support multiple radar devices and waveforms, allowing for coordinated channel access and reducing interference through scheduled channel access techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple radar devices operate using contention-based approaches like LBT, then device complexity is reduced, but radar waveform multiplexing efficiency deteriorates and interference increases
Solution Approach 1:
The radar band is segmented into multiple non-overlapping subbands with different frequency sizes and time durations. Each subband is allocated to specific radar devices based on their waveform characteristics and operational requirements, enabling efficient multiplexing while avoiding interference through structured resource division.
2Productivity
If radar band is partitioned into non-overlapping subbands with different frequency sizes and time durations, then radar waveform multiplexing efficiency is improved, but device complexity increases
Solution Approach 1:
The resource pool configuration framework provides a universal structure that can accommodate multiple radar waveforms with different characteristics. By defining subbands with varying frequency sizes and time durations, the system achieves multi-functionality in supporting diverse radar operations within a unified resource management architecture.
3Ease of operation
If contention-based channel access is used, then ease of operation is maintained, but multi-radar interference increases reducing target detectability
Solution Approach 1:
The system performs preliminary actions by pre-configuring resource pools with non-overlapping subbands before radar operations begin. This advance resource allocation ensures that radar devices operate in dedicated frequency-time resources, eliminating interference while maintaining operational simplicity through automated resource selection from the pre-defined pool.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for wireless communication by a radar device. The radar device determines a resource pool configuration indicating a radar band partitioned into a plurality of non-overlapping subbands. At least two of the plurality of non-overlapping subbands use resource elements (REs) that differ in at least one of a frequency size or a time duration. The radar device transmits a radar waveform using at least one RE within a subband of the plurality of non-overlapping subbands.