Algorithms for continuous location-dependent and context-aware queries in indoor environments
Proceedings of the 20th International Conference on Advances in Geographic Information Systems
A connectivity index for moving objects in an indoor cellular space
Personal and Ubiquitous Computing
Context-aware modelling of continuous location-dependent queries in indoor environments
Journal of Ambient Intelligence and Smart Environments - Context Awareness
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Range query processing is an important technology in spatial databases. Current studies mainly focus on range queries in outdoor space based on the Euclidean or network distances, but rarely any approach is proposed for indoor space. In this paper, we present two network-based approaches to supporting stationary range queries and continuous range queries for indoor space. There are several challenges involved in designing these approaches. First, having no explicit network construction in indoor space makes it difficult to precisely determine the distances between objects. Second, users can walk to anywhere in the building, which makes it hard to predict users’ movements for continuous range queries. Our proposed approaches can overcome these challenges and efficiently support range queries in indoor space.