The recent advances of ensemble mobile environment of smart devices with embedded sensors have enabled the MANET to play a\nkey role in the smart cities as well asWSN and WMN. However, these smart devices are still limited in terms of energy, processor,\nand memory. Moreover, the efficient routing for reliable network connectivity at anytime, anywhere, and about everything is still\na challenge in multihop wireless networks. This paper evaluates the QoS and energy efficiency of three active routing protocols:\n(i) OLSRv2, a successor to OLSR, (ii) DYMO, a successor to both DSR and AODV, and (iii) MP-OLSR multipath extension to\nOLSRv2. In contrast to the related previous works which focused only on CBR traffic without considering the influence of specific\ntraffic types on the performance of routing protocols, this work focused on this area from a different perspective. It evaluates the\nperformance of three internet-based traffic types that can be used in the smart city applications:VoIP,HTTP, and FTP using different\nsimulation models. The impact of the network density, load traffic, and nodes mobility on the considered protocols was evaluated\nby considering particular performance metrics for each traffic application. Based on the results, the study concludes by presenting\nuseful recommendations for future work.
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