Wireless Communication Device Indoor Positioning via Channel Characteristics
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Solution Overview
Problem
Current indoor positioning techniques face challenges in detecting individuals or objects within specific areas without deploying specialized devices like cameras and radars, which are costly and may violate privacy, and GPS/GNSS signals are unavailable indoors.
Innovation Solution
A communication processing device and method that uses a detection unit to identify presence based on propagation channel characteristics, such as radio wave fluctuations, to detect individuals or objects within specific areas, utilizing a simple configuration that includes a storage unit, computation processing unit, distance obtaining unit, and positioning unit for accurate location determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If specialized devices such as cameras and radars are deployed to detect persons or objects, then detection capability is improved, but device complexity and cost increase
Solution Approach 1:
The patent applies universality by enabling existing wireless communication devices to perform dual functions: their primary communication function and a secondary detection function. The detection unit utilizes the propagation channel characteristics already present in wireless communication signals to detect persons or objects, eliminating the need for separate specialized detection devices like cameras or radars.
Solution Approach 2:
The patent implements self-service by having the wireless communication system detect persons or objects using its own propagation channel characteristics without requiring external specialized devices. The detection unit analyzes fluctuations in the wireless signal's propagation channel to identify the presence of persons or objects, allowing the communication system to serve its own detection needs.
2Measurement precision
If specialized devices such as cameras are deployed to detect persons or objects, then detection capability is improved, but cost increases
Solution Approach 1:
The patent applies universality by enabling existing wireless communication devices to perform dual functions: their primary communication function and a secondary detection function. The detection unit utilizes the propagation channel characteristics already present in wireless communication signals to detect persons or objects, eliminating the need for separate specialized detection devices like cameras or radars.
Solution Approach 2:
The patent implements self-service by having the wireless communication system detect persons or objects using its own propagation channel characteristics without requiring external specialized devices. The detection unit analyzes fluctuations in the wireless signal's propagation channel to identify the presence of persons or objects, allowing the communication system to serve its own detection needs.
3Measurement precision
If cameras are employed to detect persons or objects, then detection capability is improved, but privacy protection is compromised
Solution Approach 1:
The patent applies the extraction principle by separating the detection function from visual imaging. Instead of using cameras that capture images and potentially invade privacy, the detection unit extracts information about the presence of persons or objects from the propagation channel characteristics of wireless signals, which do not contain personal or identifiable information.
Solution Approach 2:
The patent uses the propagation channel characteristics as an intermediary medium for detection. Rather than directly observing persons or objects with cameras, the system detects their presence through the indirect effect they have on wireless signal propagation, such as signal attenuation or phase changes, thereby avoiding direct visual capture and privacy concerns.
4Measurement precision
If GPS or GNSS signals are used for positioning, then positioning capability is improved, but indoor positioning becomes impossible
Solution Approach 1:
The patent uses the propagation channel characteristics of wireless communication signals as an intermediary for positioning indoors. Since GPS/GNSS signals cannot penetrate buildings, the system instead utilizes the local wireless communication signals whose propagation characteristics can be measured and analyzed to determine position within indoor environments.
Solution Approach 2:
The patent applies parameter changes by shifting from using satellite-based signals (GPS/GNSS) to using terrestrial wireless communication signals for positioning. The system measures changes in propagation channel parameters such as signal strength, phase, or time of arrival of wireless signals to calculate positions indoors, adapting the positioning method to work in environments where satellite signals are unavailable.
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 effective detection and positioning of individuals or objects within specific areas using a cost-effective and privacy-respecting approach, without the need for specialized devices, by analyzing radio wave propagation characteristics.
Implementation Method 1
based on a propagation channel characteristic in a propagation channel between devices, detects a presence of a person/object in the propagation channel
Data Source
AI summary
[Problem] Provided is a communication processing device, a communication processing method, and a communication system capable of detecting when a person, an object, or the like enters a specific area, using a simple configuration.[Solution] The communication processing device includes: a detection unit that, based on a propagation channel characteristic in a propagation channel between devices, detects a presence of a person/object in the propagation channel; and an output unit that outputs a signal including information about the detection.