Cooperative Radar Grouping for Wider Sensing Coverage
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Solution Overview
Problem
Wireless communications systems face challenges in improving signal transmission and reception in complex and dynamic environments, including signal attenuation, limited device cooperation for radar sensing, and coverage holes due to limited radar signal resources and computational overhead.
Innovation Solution
Adaptive grouping of cooperating radar sensing devices to allocate time, frequency, and spatial radio resources, enabling joint radar sensing over a wider area by coordinating beam and resource management among devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple radar devices are deployed to improve sensing coverage and accuracy, then the sensing capability is improved, but the system complexity and resource consumption increase
Solution Approach 1:
Multiple radar devices are merged into a cooperative network where they share target data and coordinate their sensing operations. The radar devices combine their individual detection capabilities to achieve improved target detection accuracy and coverage while managing system complexity through centralized or distributed coordination mechanisms.
Solution Approach 2:
Each radar device in the network is designed to perform multiple functions including target detection, data sharing, and collaborative sensing. The system enables radar devices to adaptively switch between individual operation mode and cooperative operation mode, providing universal functionality that reduces overall system complexity.
2Ease of operation
If multiple radar devices operate independently, then each device can function autonomously, but target detection accuracy and coverage are limited
Solution Approach 1:
The radar network implements dynamic operation modes where each radar device can independently operate in autonomous mode or switch to cooperative mode based on target detection requirements. The system adaptively adjusts the level of coordination and data sharing among radar devices, enabling both autonomous operation capability and improved collaborative detection accuracy.
Solution Approach 2:
Radar devices exchange target detection data and feedback information with each other in the network. This feedback mechanism enables radar devices to improve their target detection accuracy by incorporating information from other devices while maintaining the option to operate autonomously when cooperative feedback is not required.
3Measurement precision
If radar devices share all target data continuously, then detection accuracy improves, but communication overhead and processing load increase
Solution Approach 1:
The radar network implements selective data sharing where each radar device shares target data locally with nearby devices rather than continuously broadcasting to all devices in the network. This local quality approach reduces communication overhead and processing load while maintaining detection accuracy by ensuring relevant devices receive necessary target information.
4Productivity
If a centralized coordination system is used to manage radar devices, then resource allocation improves, but system vulnerability to failures increases
Solution Approach 1:
The coordination system is segmented into distributed coordination nodes rather than a single centralized controller. Each radar device or group of devices can independently perform coordination functions, dividing the centralization function into smaller autonomous units. This segmentation improves system reliability by eliminating single points of failure while maintaining efficient resource allocation through distributed decision-making.
Data Source
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AI summary
Certain aspects of the present disclosure provide techniques for adaptive grouping for cooperative radar sensing. A method for wireless communications by a first network entity includes receiving, from a second network entity, first grouping information comprising an indication of a first plurality of network entities, the first grouping information associated with a first time-period; receiving, from the second network entity, second grouping information comprising an indication of a second plurality of network entities, the second grouping information associated with a second time-period; receiving a first radar signal during the first time-period; receiving a second radar signal during the second time-period; transmitting, to the second network entity, first sensing information based on the first radar signal; and transmitting, to the second network entity, second sensing information based on the second radar signal.