Collocated Transceivers for Radar Sensing in Wireless Devices
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Solution Overview
Problem
Conventional motion sensing and presence detection technologies, such as PIR sensors and FMCW radar, are limited by the need for additional hardware resources and their inability to seamlessly communicate with other wireless devices or integrate with smart home and IoT systems.
Innovation Solution
Wireless devices equipped with collocated transceivers that can toggle between communication and sensing modes, allowing for the integration of radar operations with wireless communication protocols, enabling seamless communication and sensing without disconnecting from the communication medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional sensing devices such as PIR sensors and FMCW radar are used for motion sensing and presence detection, then sensing capability is achieved, but additional hardware resources are required and integration with wireless communication is limited
Solution Approach 1:
The patent applies multi-functionality by enabling wireless communication transceivers to perform both communication and sensing functions. The same hardware components (transmitters, receivers, antennas) are used for both wireless communication protocols and radar operations, eliminating the need for separate dedicated sensing hardware. This allows devices to seamlessly switch between communication mode and sensing mode, achieving integration of motion sensing and presence detection with wireless communication infrastructure.
2Measurement precision
If dedicated sensing hardware is used for presence detection, then sensing precision is improved, but device complexity and hardware resource requirements increase
Solution Approach 1:
The patent enables wireless communication transceivers to perform sensing functions with precision comparable to dedicated sensing hardware. By utilizing the existing transmitters and receivers for radar operations, the system achieves accurate presence detection and motion sensing without requiring additional dedicated sensing components. The same hardware is dynamically allocated between communication and sensing tasks based on operational requirements.
3Adaptability or versatility
If conventional sensing systems are used, then sensing operations can be performed, but seamless communication with other wireless devices and integration with smart home systems is limited
Solution Approach 1:
The patent merges wireless communication and sensing operations into a unified system. The same transceivers that handle wireless communication protocols are also used for radar sensing operations. This integration allows seamless communication between sensing data and other wireless devices, enabling smooth integration with smart home and IoT systems. The system can switch between communication mode and sensing mode without requiring separate hardware interfaces or communication protocols.
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
This solution enables wireless devices to perform both wireless communication and sensing operations, such as presence detection and proximity sensing, while maintaining connectivity with other devices, thereby enhancing the capabilities of smart home and IoT environments.
Implementation Method 1
frequency modulated continuous wave (FMCW) radar
Implementation Method 2
transmit a waveform through a communication medium
Data Source
AI summary
Systems, methods, and devices enable radar operation in wireless devices. Methods include switching a first transceiver and a second transceiver from a communications mode to a sensing mode while maintaining a network connection, generating a designated waveform at a wireless device, and transmitting a first signal based on the designated waveform via the first transceiver of the wireless device. Methods also include receiving a second signal via the second transceiver of the wireless device, the second transceiver being collocated with the first transceiver within the wireless device, and generating sensing data based on the second signal, the sensing data comprising an indication of whether an entity has been detected by the wireless device.