Base Station RF Sensing Coordination for Environment Mapping
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Solution Overview
Problem
Existing wireless communication systems lack an efficient method for environment sensing using base stations without the assistance of user equipment.
Innovation Solution
A method and system where base stations coordinate to transmit and receive RF sensing signals, allowing them to detect target objects within their environment without relying on user equipment assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If base stations transmit RF sensing signals for environment sensing, then sensing capability is improved, but power consumption and interference increase
Solution Approach 1:
The base station transmits RF sensing signals periodically rather than continuously, using discontinuous transmission cycles. The transmitter base station sends sensing signals at specific intervals, and the receiver base station performs measurements during these periodic transmission windows, enabling energy-efficient environment sensing without continuous power consumption.
Solution Approach 2:
The RF sensing signals serve dual purposes: they are used for both wireless communication and environment sensing operations. The same base station infrastructure and signal transmission mechanisms are utilized for both communication data transfer and sensing measurements, eliminating the need for separate dedicated sensing hardware and reducing overall system power consumption.
2Measurement precision
If base stations transmit RF sensing signals for environment sensing, then sensing capability is improved, but interference to communication signals increases
Solution Approach 1:
The system segments communication signals and sensing signals into separate time-frequency resources. Different reference signals (CRS, CSI-RS, DM-RS, SRS) are allocated to specific resource elements, allowing the receiver to distinguish and separately process communication data from sensing measurements, thereby minimizing mutual interference between the two functions.
Solution Approach 2:
The receiver base station acts as an intermediary that separates and processes communication signals and sensing signals independently. It receives both types of signals, identifies them based on their respective reference signal structures, and processes them through different measurement and evaluation paths, preventing interference from affecting either function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables base stations to perform effective wireless environment sensing, mapping static objects and improving indoor environment awareness without additional power consumption or interference.
Implementation Method 1
mmW RF signals can be used for other purposes as well. For example, mmW RF signals can be used in weapons systems (e.g., as short-range fire-control radar in tanks and aircraft)
Data Source
AI summary
Disclosed are techniques for environment sensing. In an aspect, a transmitter base station determines a configuration for a radio frequency (RF) sensing signal, the configuration determined based at least in part on coordination among a plurality of base stations, and transmits the RF sensing signal to at least one receiver base station based on the configuration. In an aspect, a receiver base station receives a configuration for an RF sensing signal, the configuration determined based at least in part on coordination among a plurality of base stations, receives, from at least one transmitter base station, the RF sensing signal, and detects at least one target object based, at least in part, on reception of the RF sensing signal.