5G NR Comb Resource Allocation for Joint Communication and Radar
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing resource allocation for joint communication and radar signals, leading to suboptimal performance in terms of resource utilization and data rate overhead, particularly in 5G NR systems.
Innovation Solution
The method involves selecting time and frequency resources for joint communication and radar (JCR) signals using a comb pattern, allowing for improved resource utilization and efficient allocation based on predicted resource utilization and traffic priority, thereby enhancing radar operations with minimal data rate overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional resource allocation methods are used for joint communication and radar signals, then resource management is simpler, but resource utilization efficiency deteriorates and data rate overhead increases
Solution Approach 1:
The patent segments the time-frequency resource grid into distinct communication resources and radar resources using comb patterns. Radar signals are allocated to specific comb tooth positions while communication signals use other positions, enabling independent optimization of each function without interfering with the other, thus improving resource utilization efficiency while minimizing data rate overhead
Solution Approach 2:
The patent introduces a new dimensional approach by using comb patterns in the frequency domain to allocate radar resources. Instead of traditional time-division or frequency-division multiplexing, the comb pattern structure creates orthogonal resource allocation across multiple frequency subcarriers, enabling high-density radar signal transmission with minimal impact on communication data rates
2Measurement precision
If high-density radar signals are transmitted, then radar detection precision improves, but resource allocation complexity increases
Solution Approach 1:
The patent changes the resource allocation parameters by configuring comb patterns with specific periodicities and offsets. By adjusting these comb pattern parameters, the system can dynamically allocate high-density radar resources in certain time-frequency regions while maintaining simpler allocation in other regions, thus achieving high radar detection precision without uniformly increasing system complexity
Solution Approach 2:
The patent applies local quality by allowing different comb pattern configurations in different time-frequency regions based on local requirements. Regions requiring high radar precision use denser comb patterns, while regions prioritizing communication use sparser patterns, optimizing overall system performance without uniform complexity increase
Data Source
AI summary
Aspects described herein relate to sensing sidelink communications during a sensing window, configuring, in a time period following the sensing window and based on resources predicted as available in the time period based on the sidelink communications, resources for a comb pattern including a collection of resource elements in a subset of multiple time resource locations within the time period for transmitting a radar signal that includes a data channel communication, and transmitting or receiving, using the comb pattern, the radar signal to or from the one or more other UEs over sidelink shared channel resources.