RFID Device Provisioning via DHCP Location Detection
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Solution Overview
Problem
Existing RFID technologies face challenges with high costs, limited range, and complexity in networking and provisioning, particularly due to expensive inductively-coupled tags and limited memory in RFID devices, which hinder large-scale deployment and efficient tracking of products.
Innovation Solution
The use of EPC code information combined with DHCP protocols to identify and provision RFID devices, enabling automatic configuration and location-based functionality through DHCPDISCOVER requests, DHCPINFORM messages, and DHCP server updates, allowing for dynamic reconfiguration and movement tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inductively-coupled RFID tags are used, then acceptable performance levels are achieved, but cost becomes too expensive for widespread use
Solution Approach 1:
The patent employs capacitively-coupled RFID tags that are significantly cheaper than inductively-coupled tags, enabling disposable and widespread deployment. These tags use conductive ink instead of metal coils, reducing material costs and allowing mass production at a fraction of the price of traditional RFID tags.
Solution Approach 2:
The patent changes the coupling mechanism from inductive to capacitive, fundamentally altering the operating parameters of the RFID system. This parameter change enables the use of conductive ink patterns instead of metal coils, achieving both cost reduction and acceptable performance for specific applications.
2Ease of manufacture
If capacitively-coupled RFID tags are used, then cost is reduced, but range becomes very limited
Solution Approach 1:
The patent optimizes capacitive coupling parameters including conductive ink thickness, pattern geometry, and operating frequency to extend the reading range beyond the typical 1cm limitation. By carefully controlling these parameters, the system achieves practical range extension while maintaining cost-effectiveness.
3Manufacturing precision
If manual provisioning is used for RFID devices, then configuration accuracy is maintained, but time consumption increases significantly
Solution Approach 1:
The patent implements automated provisioning where RFID devices self-configure by reading location information from tags and automatically obtaining network parameters through DHCP protocols. This eliminates manual configuration requirements while maintaining accuracy through standardized protocols and pre-defined configuration templates.
Solution Approach 2:
The system pre-configures location information in RFID tags and pre-defines device personality templates before deployment. When a device is activated, it automatically retrieves and applies the appropriate configuration based on its detected location, eliminating the need for real-time manual provisioning.
4Reliability
If RFID devices are deployed without automatic provisioning, then device functionality is maintained, but network scalability is hindered
Solution Approach 1:
The patent enables RFID devices to automatically provision themselves by detecting their location through RFID tags and autonomously obtaining network configuration parameters through DHCP. This self-service capability allows unlimited network scalability without requiring manual intervention for each device deployment.
Solution Approach 2:
The system uses universal protocols (DHCP, RFID) that work across different device types and locations, enabling a single automated provisioning mechanism to serve diverse RFID devices throughout the network. This universal approach eliminates the need for device-specific provisioning procedures.
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 enables efficient, cost-effective, and scalable RFID network deployment, allowing for precise tracking and updating of product information across various locations, enhancing inventory management and business planning.
Implementation Method 1
RFID tag 100 is powered by a magnetic field 145 generated by an RFID reader 125. The tag's antenna 110 picks up the magnetic signal 145.
Data Source
AI summary
Methods and devices are provided for locating, identifying and provisioning devices in a network. According to some implementations of the invention, a combination of EPC code information and existing networking standards form the basis of identifying and provisioning methods. For example, location information included in a DHCPDISCOVER request can be used to determine appropriate configurations for networked devices. In some such implementations, the location information is read from an RFID tag near the networked device and is inserted in the DHCPDISCOVER request. The location information may include any type of absolute or relative coordinate, positioning, cartographic or similar information and/or information from which such information may be derived.