Offline Mobile RFID Event Persistence and Synchronization
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Solution Overview
Problem
Mobile RFID systems face challenges in efficiently storing and synchronizing data in offline mode due to lack of standardization in data formats and the error-prone process of transferring data to centralized servers when network connectivity is restored.
Innovation Solution
Implementing a mobile interrogator/reader that preprocesses RFID events with filtering logic and stores them in a normalized format in a local relational database, allowing for efficient local access and automatic bi-directional synchronization with a centralized database upon reconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RFID events are stored in local files on mobile devices, then data collection capability is improved, but data search efficiency and standardization deteriorate
Solution Approach 1:
The patent segments the data storage approach by maintaining a standardized schema at the mobile device level while allowing flexible data collection. The normalized event schema provides a consistent interface for searching and accessing data, while the system maintains the ability to collect diverse RFID events from multiple sources.
Solution Approach 2:
The patent changes the data format parameter by implementing a standardized normalized schema for RFID events. This schema transformation enables efficient searching and consistent data access across different mobile devices and sources, while still allowing comprehensive data collection.
2Productivity
If RFID events are stored in local files on mobile devices, then offline data collection is improved, but data synchronization reliability deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-processing and normalizing RFID events at the mobile device before storage. This preparation ensures that data is ready in a standardized format for reliable synchronization with the central server, eliminating the need for complex data transformation during the synchronization process.
Solution Approach 2:
The patent implements feedback mechanisms through conflict resolution rules during synchronization. The system receives feedback about existing data at the central server and adjusts the synchronization process accordingly, using rules to determine whether to update, merge, or reject incoming events based on timestamps and data integrity.
3Adaptability or versatility
If mobile devices use different formats to store offline RFID events, then flexibility in data collection is improved, but data standardization and processing complexity worsen
Solution Approach 1:
The patent introduces an intermediary layer in the form of a standardized event schema that mediates between diverse data collection formats and the central processing system. Mobile devices can collect data in various formats, but all data is transformed into the standardized schema before storage and synchronization, simplifying processing at the central level.
4Ease of operation
If manual data copying is used for synchronization, then control over data transfer is improved, but error rate and time consumption worsen
Solution Approach 1:
The patent implements self-service automation where the system automatically detects network connectivity, identifies unsynchronized events, and performs data transfer without manual intervention. The automated synchronization process maintains control through structured protocols while eliminating manual copying errors and time consumption.
Data Source
AI summary
In various embodiments, RFID events are stored in a normalized format on mobile device configured by metadata pushed by a centralized data hub. RFID events are pre-processes with filtering logic by a mobile interrogator/reader before being inserted into tables of a local relational database on the mobile device when the mobile device cannot otherwise communicate collected events to the centralized data hub. The metadata provides a simple, efficient, and standard interface for persisting the RFID events such that local access from applications on the mobile device is provided.