Reliable Data Forwarding in Wireless Sensor Networks: Delay and Energy Trade Off
G. Mazzini, Mohamed Khaled, Chiara Taddi · Sciyo eBooks · 2010
This work has deeply presented an important trade off between energy consumption and delay in the task of reliable data delivery between a source node and a destination sink in a wireless sensor network. We have presented the performance in terms of delay and energy consumption of cooperative and non cooperative ARQ techniques that allows to ensure reliable communications in WSNs for delay constraints applications. Our investigations have showed that the proposed cooperative ARQ is a successful technique. In particular the cooperative solution, besides showing always better performance concerning the timeliness of data delivery, with respect to the non cooperative approach, can in some scenario outperform the trivial non cooperative hop-by-hop detect and forward technique also in terms of energy saving.