A time-slot scheduling algorithm for e-health wireless sensor networks

Abstract

Abstract-For e-health wireless sensor networks presenting significant traffic loads, MAC protocols based on deterministic scheduling algorithms are consensually considered more adequate than protocols based on random access algorithms. Indeed, TDMA-based MAC protocols are able to control the delay bound and save power by eliminating collisions. However, these protocols always require some expedite scheme to assign the superframe time-slots to the network devices that need to transmit data. Knowing that patients of an e-health wireless network are normally monitored by the same number and types of motes, originating a regular traffic pattern, a simple collaborative time-slot allocation algorithm can be achieved, as introduced in this paper. In the proposed algorithm, the announcement of time-slot allocation by the network coordinator is avoided, which helps to improve the packet delivery ratio and reduce the energy consumption in the e-health wireless network.

An Adaptive Acknowledgement On-demand Protocol for Wireless Sensor Networks

“…For instance, the TDMA-based e-health WSNs (Gama et al, 2010) and a resource allocation scheme in wireless body sensor networks (Liu et al, 2016) were implemented with TDMA to optimize both energy efficiency and quality of service (QoS). Another example of TDMA can be found for WSNs operating in noisy environments where it is used to avoid packet collision (Montiel and Cárdenas, 2014).…”