An Effective IoT Services Indexing and Query Technique

It is envisioned that billions of sensing devices are to be deployed for collecting context information in order to support intelligent and real-time decision support. Besides functionality specification, most devices have spatial and temporal limitations. In this setting, how to organize these sensing devices properly and thus to support searching devices w.r.t the requirement of certain users is a challenge. This paper proposes a multiple index method to organize sensing devices considering their functionality specification, spatial and temporal attributes, and develops a query mechanism leveraging this multiple indexes. This technique can support the searching of sensing devices efficiently.