Antenna Switching for Joint Channel Sounding and Radar Sensing
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Solution Overview
Problem
Existing wireless communication systems, particularly 5G networks, face challenges in efficiently supporting both communication and radar sensing operations, leading to inefficiencies in channel sounding and radar sensing performance, and there is a need for improved methods to determine the location of mobile devices for applications such as emergency calls and asset tracking.
Innovation Solution
Implementing antenna switching techniques in user equipment (UE) to facilitate joint channel sounding and radar sensing, allowing UE to communicate capabilities for signal configurations, and network entities to provide configurations for antenna switching, thereby optimizing signal usage for both communication and radar sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate antennas are used for communication and radar sensing, then both functions can operate independently, but device complexity and signal traffic increase
Solution Approach 1:
The patent implements antenna switching mechanisms that allow the same antenna to be dynamically allocated for either communication or radar sensing functions based on operational requirements. The network entity configures the UE to switch antennas between different signal types, enabling a single antenna system to perform multiple functions without requiring separate dedicated antennas for each purpose.
2Measurement precision
If dedicated antennas are allocated for each function, then signal quality is maintained, but signal traffic and resource usage increase
Solution Approach 1:
The patent employs dynamic antenna switching where the antenna assignment is not fixed but changes based on real-time operational needs. The network entity provides configurations that enable the UE to dynamically switch antennas between communication and radar sensing modes, optimizing signal quality for the active function while reducing overall signal traffic compared to having dedicated antennas always active for both functions.
Data Source
AI summary
A signal transfer method for communication, radar sensing, or a combination thereof, includes: transmitting, from a UE, a capability message indicating a capability of the UE to perform antenna switching for radar signal transmission and for communication signal transmission; receiving, at the UE from a network entity, a configuration message indicating a radar signal transmission configuration, or a communication signal transmission configuration, or a combination thereof; and transmitting, from the UE, one or more outbound signals, the one or more outbound signals comprising a radar signal in accordance with the radar signal transmission configuration, or comprising a communication signal in accordance with the communication signal transmission configuration, or a combination thereof.