Experimental Evaluation of Multihop-Awa...

Through real-world measurements we evaluate the

impact of multihop-aware cooperative relaying on end-to-end

route performance in wireless multi-hop networks. In an exper-

iment with 50 devices in an industrial environment cooperative

relaying increases the end-to-end transmission reliability for

multi-hop links to nearly 100 % while reducing the average packet

delay. We suggest how to include relay selection in the route

discovery process of ad hoc routing protocols such as Ad hoc On-

Demand Distance Vector (AODV) and Dynamic Source Routing

(DSR) and perform two experiments. In the first experiment

we discuss route discovery strategies focusing on small delay

benefiting from reliable data link transmissions using cooperative

relays. In the second experiment we compare reliability and

delay for five different transmission powers with and without