IoT Device Registration via Signal Pattern Similarity
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Solution Overview
Problem
Existing IoT network registration methods face challenges in achieving both usability and security due to signal reception issues caused by multipath phenomena and moving objects, which affect the reliability of wireless signals.
Innovation Solution
An electronic device capable of configuring an ad hoc network with a target device and a transmitting device, analyzing signal change patterns to determine similarity, and registering the target device as an IoT device based on a threshold value, thereby overcoming signal reception challenges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If wireless signals are used to identify devices in the same space, then device registration can be performed automatically, but signal reception strength is not proportional to distance due to multipath phenomena
Solution Approach 1:
The patent introduces a third device as an intermediary to mediate the spatial relationship verification between the first and second devices. Instead of directly comparing signals between the two devices, the third device receives signals from both and provides reference information, acting as a mediator to resolve the measurement precision issue caused by multipath phenomena.
Solution Approach 2:
The system implements feedback by having the third device transmit reference signal information back to the first and second devices. This feedback mechanism allows the receiving devices to compare their received signal characteristics with the reference information, enabling them to determine their spatial relationship despite signal variations caused by multipath effects.
2Ease of operation
If wireless signals are transmitted to register devices, then the onboarding process can be simplified, but signal strength and phase change over time due to moving objects causing multipath fading
Solution Approach 1:
The third device performs preliminary action by pre-transmitting reference signal information before the first and second devices attempt to determine their spatial relationship. This preliminary provision of reference data enables the receiving devices to have a baseline for comparison, making the registration process more reliable despite subsequent signal variations caused by moving objects.
Solution Approach 2:
The system embraces the dynamic nature of wireless environments by using real-time signal comparison. Instead of relying on static signal strength thresholds, the devices dynamically compare their received signal characteristics with reference information from the third device, allowing the system to adapt to changing conditions caused by moving objects in the environment.
3Ease of operation
If signal strength is used to determine device proximity, then simple identification can be achieved, but it is difficult to simultaneously achieve usability and security
Solution Approach 1:
The third device creates a copy of the reference signal information and distributes it to the first and second devices. This copying mechanism allows the receiving devices to have identical reference data for comparison, enabling simple yet secure verification. The simplicity of comparing signals against a known reference maintains ease of operation, while the cryptographic nature of signal comparison ensures security.
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 efficient and secure registration of IoT devices by accurately identifying devices in the same space, even in environments with moving objects and multipath signal interference.
Implementation Method 1
a multipath may occur due to reflection, diffraction, etc.
Implementation Method 2
a multipath may occur due to reflection, diffraction, etc.
Implementation Method 3
due to a multipath fading phenomenon in which the signal strength and phase change as the signal is transmitted along the multipath
Data Source
AI summary
An electronic device may include at least one processor configured to: configure an ad hoc network including the electronic device, a target device, and a transmitting device, based on a request to add an Internet of Things (IoT) device being received; acquire first information on a first change pattern of a first signal; receive second information on a second change pattern of a second signal transmitted to the target device by the transmitting device, from the target device through the communication interface; acquire a value indicating a similarity between the first change pattern and the second change pattern based on the first information and the second information; and identify that the target device is in a same space as the electronic device and register the target device as the IoT device, based on the value indicating the similarity being greater than or equal to a threshold value.