RFID-enhanced ubiquitous knowledge bases: Framework and approach

In contrast to classical paradigms, in pervasive computing the user simultaneously interacts with several micro-devices such as RFID tags integrated into the environment, extracting data from them. Current approaches based on centralized control and information storage are utterly impractical. Here a ubiquitous Knowledge Baseubiquitous knowledge base (u-KBu-KB See ubiquitous knowledge base) is defined as a distributed knowledge base whose individual facts are disseminated on RFID-tagged objects within the environment, without centralized coordination. The proposed framework includes: (i) components and operations specification of a u-KB ubiquitous knowledge base, (ii) a distributed application-layer protocol for dissemination and discovery of knowledge embedded within RFIDs dipped in a MANET and (iii) a homomorphic algorithm for compressing on-tag data. The feasibility of the approach has been confirmed by large-scale simulation tests.