Data freshness model for P/S based sensor monitoring system
Kemal Çağrı Serdaroğlu, Şebnem Baydere · 2018
Publish-Subscribe(P/S) based sensor monitoring systems provide different quality-of-service according to client-server policies. Using adaptive timing and data freshness models may increase the flexibility of services in these systems. In this paper, we propose two timing models for sensor network based emergency detection P/S Systems in which the timing constraints and data freshness can be dynamically adjusted for user needs. The performance of these models is tested in a real testbed setup. The experimental results reveal that the proposed models can meet the timing and data freshness demands of the clients for applications which acquire physical data from scalar sensors with 2-10s sampling rates.