RFID Inventory Threading for Simultaneous Tag Detection

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Solution Overview

Problem

Existing RFID systems face low inventory efficiency when attempting to identify multiple RFID tags simultaneously due to signal conflicts, as they typically operate in a single-thread inventory manner, failing to decode signals from multiple tags at the same moment.

Innovation Solution

Implementing a multi-thread inventory process that allows simultaneous detection of signals from multiple RFID tags by sharing transmission resources and employing orthogonal or non-orthogonal communication strategies, ensuring efficient and reliable data transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single-thread inventory process is used to identify RFID tags, then signal conflicts are avoided, but inventory efficiency deteriorates due to inability to decode multiple tags simultaneously

Engineering Contradiction:

Improvesignal decoding reliabilityVSAvoidinventory efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent segments the inventory process into multiple independent threads, where each thread handles the identification of one or more RFID tags. This allows parallel processing of multiple tags simultaneously while maintaining reliable signal decoding within each thread, thereby resolving the contradiction between inventory efficiency and signal decoding reliability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary mechanism (resource allocation module) that manages transmission resources among multiple threads. This intermediary coordinates resource distribution to prevent signal conflicts while enabling parallel tag identification, thus improving inventory efficiency without compromising decoding reliability

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If multiple RFID tags are identified simultaneously using single-thread process, then inventory efficiency is improved, but signal conflicts increase causing decoding failures

Engineering Contradiction:

Improveinventory efficiencyVSAvoidsignal decoding reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements dynamic thread management where the system can adjust the number of active threads and allocate transmission resources dynamically based on current inventory conditions. This dynamic approach allows simultaneous identification of multiple tags while adapting resource allocation to prevent signal conflicts, maintaining both high inventory efficiency and reliable decoding

Inventive Principle:

Principle #15Dynamics

3Productivity

If transmission resources are shared among multiple threads, then inventory efficiency is enhanced, but resource conflicts may occur

Engineering Contradiction:

Improveinventory efficiencyVSAvoidresource management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent incorporates feedback mechanisms where the system monitors transmission resource usage and signal quality across multiple threads. Based on this feedback, the resource allocation module adjusts resource distribution in real-time to prevent conflicts while maintaining high inventory efficiency, managing complexity through intelligent control

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20260082210A1Inventory Method and Communication Device

Publication Date: 2026.03.19 VIVO MOBILE COMM CO LTD

AI summary

An inventory method includes taking, by a first communication device, inventory of at least two second communication devices based on a multi-thread inventory process.