Abstract

Mixed Reality (MR) applications depend on real-time data exchange, yet current publish–subscribe frameworks like Ubi-Interact (UBII) rely solely on topic-based routing. This context-agnostic approach delivers all topic data to all subscribers, leading to wasted bandwidth, unnecessary device processing, and potential privacy risks. This thesis proposes a context-enabled publish–subscribe model for MR environ- ments, extending UBII with location-aware mechanisms. Protocol Buffer extensions support static and dynamic location references, while backend services implement a LocationManager to process Global Positioning System (GPS) updates, compute Haver- sine distances, and apply spatial filtering. A web-based frontend integrates browser geolocation for testing and development. Evaluation shows that location-aware routing reduces irrelevant message delivery and improves efficiency without compromising real-time responsiveness. Privacy concerns are addressed through configurable precision and obfuscation strategies. The work concludes by outlining future directions for hybrid context models, adaptive filtering, and privacy-preserving policies, paving the way for efficient and secure MR middleware.

Results/Implementation/Project Description

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