Joint Communication Radar Sensing Time Delay Scheduling
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Solution Overview
Problem
Current wireless communication systems face complexity and cost challenges in integrating high-precision radar sensing without compromising communication performance, particularly in maintaining the radar operation window between uplink and downlink transmissions.
Innovation Solution
A system and method for joint communication and radar sensing that utilize a control unit to schedule the transmission of communication and radar pilot signals with time delays and frequency shifts, allowing for overlapping signals at the receiver unit, enabling low-complexity and cost-effective integration of radar functionalities while maintaining communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high precision radar operation window timing is maintained, then radar sensing precision is improved, but system complexity increases
Solution Approach 1:
The patent combines communication and radar sensing functions into a unified system that uses the same hardware infrastructure (transmitters, receivers, antennas) for both purposes. The communication pilot signals and radar sensing signals are integrated into a single transmission framework, allowing the system to perform both functions simultaneously without requiring separate dedicated hardware for each function, thereby reducing overall system complexity while maintaining radar precision.
Solution Approach 2:
The patent implements multi-functionality by enabling communication transmitters and receivers to serve dual purposes: transmitting/receiving communication signals and performing radar sensing operations. The same pilot signal transmission mechanism is used for both communication channel estimation and radar environmental sensing, allowing the system to achieve high precision radar measurements without adding complex dedicated radar hardware.
2Adaptability or versatility
If radar functionalities are integrated into communication systems, then spectrum utilization is improved, but implementation cost increases
Solution Approach 1:
The patent merges radar sensing functionality into the existing communication system infrastructure by utilizing the same pilot signal transmission and reception mechanisms. This integration approach allows the system to perform environmental sensing without requiring separate dedicated radar hardware, thereby reducing implementation costs while improving spectrum utilization through joint communication and sensing operations.
Solution Approach 2:
The patent implements cost-effective integration by making communication hardware universal - capable of performing both communication and radar sensing functions. The base station and user equipment can simultaneously execute communication protocols and radar environmental awareness tasks using the same physical layer components, eliminating the need for additional expensive dedicated radar equipment while enhancing spectrum efficiency.
3Productivity
If communication and radar signals are transmitted simultaneously, then system productivity is improved, but signal separation difficulty increases
Solution Approach 1:
The patent segments the transmitted signals by applying distinct time delays to communication and radar pilot signals. This time-domain segmentation allows the receiver to separate and process communication and radar signals independently, even when transmitted simultaneously, thereby maintaining high system productivity while reducing signal separation difficulty through structured temporal differentiation.
Solution Approach 2:
The patent introduces time delay as an additional dimension for signal differentiation. By transmitting communication and radar pilot signals with controlled time offsets, the system creates distinguishable signal paths in the time domain, enabling the receiver to easily separate and process the two types of signals simultaneously without interference, thus maintaining high productivity while simplifying signal separation.
Data Source
AI summary
A system is provided for joint communication and radar sensing. The system includes at least one communication transmitter unit configured to transmit at least one communication pilot signal, at least one radar transmitter unit configured to transmit at least one radar pilot signal, a control unit configured to schedule the transmission of the at least one communication transmitter unit and/or the at least one radar transmitter unit using a time delay, and at least one receiver unit configured to receive the at least one radar pilot signal with the time delay with respect to the at least one communication pilot signal. A method of using the system for joint communication and radar sensing is also provided.