Backscatter Role Assignment for Low-Delay IoT Communication
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Solution Overview
Problem
Existing communication systems in Sustainable IoT (Sustainable IoT) face challenges in determining optimal combinations of communication devices for roles related to power supply and data reception in backscatter communication, which are influenced by factors like traffic situations and positional relationships among Access Points (AP), Stations (STA), and sensor tags, leading to inefficiencies and delays.
Innovation Solution
A communication control device and method that includes a communication control unit to receive role request signals and determine operations based on these signals, enabling appropriate assignment of roles such as Power Supplier and Reader in backscatter communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the AP performs both Power Supplier and Reader roles, then device complexity is reduced, but communication delay increases when STA needs to directly receive BCS DATA
Solution Approach 1:
The patent segments the Power Supplier and Reader roles into separate devices (AP and STA) based on dynamic conditions. The AP can transmit RF signals while a different STA receives BCS DATA directly from the Tag, dividing the communication function to reduce delay without requiring every device to perform all roles.
Solution Approach 2:
The patent implements dynamic role assignment where the combination of Power Supplier and Reader devices changes based on real-time factors such as traffic situation and positional relationships. This dynamic adaptation allows the system to optimize for low delay when direct STA reception is feasible, while maintaining simplified operation when AP-centric communication is more efficient.
2Productivity
If STA becomes Power Supplier, then power supply timing flexibility and communication frequency improve, but device capability requirements increase
Solution Approach 1:
The patent changes the operational parameters of STAs by enabling them to function as Power Suppliers under specific conditions. This allows the system to increase communication frequency and flexibility when STAs have the necessary capabilities, while the role assignment mechanism ensures that only qualified devices are designated as Power Suppliers.
3Productivity
If role assignment is optimized based on dynamic factors, then communication efficiency improves, but system complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where devices exchange information about their capabilities, traffic conditions, and positional relationships. This feedback enables dynamic role assignment that optimizes communication efficiency while managing system complexity through structured information exchange and decision-making 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 approach allows for efficient and timely communication of backscatter signals by optimizing device roles based on dynamic factors, reducing delays and improving communication efficiency.
Implementation Method 1
a sensor tag on a transmission side captures a carrier wave scattered around and reflects and/or absorbs the carrier wave using a method of modulating the carrier wave while controlling reception impedance, thereby transmitting information to a reception side (Reader)
Implementation Method 2
an Ambient Backscatter Communication System (hereinafter, ABCS) that reflects and/or absorbs various RF signals
Data Source
AI summary
The present technology relates to a communication control device, a communication control method, and a program that enable appropriate communication of a backscatter signal. The communication control device receives a role request signal requesting execution of a role related to communication of a backscatter signal by a backscatter signal generation device, and determines an operation on the basis of the role request signal. The present technology can be applied to a wireless communication system.