RFID Gateway Tag Architecture for Passive Inventory Tracking
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Solution Overview
Problem
Conventional RFID systems face limitations in tracking large numbers of items due to the limited transmission range of passive RFID tags, requiring either multiple readers or mobile reader systems, which are costly and inefficient.
Innovation Solution
The implementation of a new architecture that includes multiple active RFID readers and a gateway tag, which receives and processes data from multiple readers, allowing access to the entire inventory and interfacing with a central storage system, enabling efficient data management and access across a wide area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If passive RFID tags are used for tracking items, then cost-effectiveness is improved, but transmission range and reading capability deteriorate
Solution Approach 1:
The patent introduces a gateway tag as an intermediary device that receives data from multiple passive RFID readers and stores it locally. This gateway tag acts as a mediator between the passive RFID tags and the central system, allowing readers to access inventory data beyond their limited transmission range by querying the gateway tag which holds cached information from the entire inventory area.
2Productivity
If multiple RFID readers are deployed to cover wide areas, then tracking capability is improved, but system cost and complexity increase
Solution Approach 1:
The patent merges the functions of multiple RFID readers and a central database into a single gateway tag device. The gateway tag combines data collection from multiple readers, local data storage, and data retrieval capabilities, effectively consolidating what would otherwise require multiple separate reader units and complex communication infrastructure into one integrated component.
3Length of stationary object
If active RFID tags are used to extend transmission range, then reading capability is improved, but cost increases
Solution Approach 1:
Instead of making individual RFID tags active (which would be costly), the patent uses passive RFID tags combined with an intermediary gateway tag that has active capabilities. The gateway tag actively receives and stores data from multiple passive tags, providing extended coverage without requiring each tracked item to have an active tag.
Data Source
AI summary
A system and method are disclosed for transporting deterministic traffic in a gigabit passive optical network. A system that incorporates teachings of the present disclosure may include, for example, an Optical Line Termination (OLT) for exchanging data traffic in a Gigabit Passive Optical Network (GPON) having a controller programmed to generate a timeslot schedule for transport of a desired bandwidth of constant bit rate (CBR) data traffic by selecting one or more timeslots from periodic frame clusters operating according to a GPON Transmission Convergence (GTC) protocol. Additional embodiments are disclosed.