RFID Tag TID to EPC Serial Number Mapping
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Solution Overview
Problem
In high-volume RFID applications, manually writing and managing unique serial numbers for RFID tags is time-consuming and complex, especially when deploying thousands of tags, as existing solutions require additional programming steps and effort.
Innovation Solution
Mapping the Transponder ID (TID) serial number to the Electronic Product Code (EPC) serial number using a preset value, allowing the RFID tag to default to the TID serial number without additional programming actions, and enabling users to override with their own serial numbers if needed, with options for bit manipulation or hash functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual writing and management of unique serial numbers is performed for RFID tags, then unique identification is achieved, but time consumption and complexity increase significantly
Solution Approach 1:
The RFID tag automatically generates the EPC serial number by itself using its TID serial number through a hash function or bit manipulation, eliminating the need for external manual programming. The tag serves itself by performing the serialization operation internally when it receives a read request, thus resolving the time-consuming manual writing process while maintaining unique identification.
Solution Approach 2:
The TID serial number is pre-stored in the RFID tag's memory during manufacturing, and the tag is pre-configured with the capability to perform hash functions or bit manipulation on this TID. When deployment occurs, the EPC serial number is instantly generated from this preliminary data without requiring additional programming steps, thus reducing deployment time while ensuring uniqueness.
2Reliability
If manual writing and management of unique serial numbers is performed for RFID tags, then unique identification is achieved, but process complexity increases
Solution Approach 1:
The RFID tag autonomously performs the serialization function by applying a hash function or bit manipulation to its TID serial number when a read request is received. This self-service mechanism eliminates the need for external programming equipment and complex manual procedures, thereby reducing process complexity while maintaining the reliability of unique identification.
Solution Approach 2:
The patent extracts the essential identifying information from the TID serial number and uses only the necessary portion through hash functions or bit manipulation to generate the EPC serial number. This extraction approach simplifies the process by focusing only on the critical data elements needed for unique identification, removing unnecessary complexity from the programming process.
3Ease of manufacture
If TID serial number is mapped to EPC serial number using preset value, then programming process is simplified, but flexibility to use custom serial numbers may be reduced
Solution Approach 1:
The system provides dynamic behavior by allowing the EPC serial number generation method to be configured based on needs. By default, the automated hash function or bit manipulation is used to simplify manufacturing, but the system can be dynamically adjusted to allow custom serial number programming when adaptability is required, thus resolving the contradiction between ease of manufacture and flexibility.
Data Source
AI summary
Various exemplary embodiments relate to a method performed by an RFID tag, the method including: receiving a request for a EPC serial number; determining whether the EPC serial number has a preset value; when the EPC serial number has the preset value, mapping a transponder ID to the EPC serial number; and providing the EPC serial number in response to the RFID read request.