Transmission Manager in Heterogeneous WSNs

The current generation of sensor networks are application-specific and exposed only to a limited set of users who need them. The new emerging IoT will run multiple applications that have diverse delay requirements for generated and received measurements. Transmission manager has been proposed for single application sensing infrastructures to get optimal transmission time for measurements with different timing requirements. In this paper, we propose a transmission manager that supports multiple applications with different timing requirements.We formulate the problem with Markov decision process and dynamically adjust transmission instances based on delay requirements of buffered packets. The results show that the proposed approach decreases the energy per bit by 47% on average while guarantee at most 7% of measurements expire before reaching the next node in the network. Under same conditions, other approaches have at most 30% expired measurements.