Heterogeneous hybrid vehicular WiMAX-WiFi network for in-tunnel surveillance implementations

Hybrid wireless networks have been identified as a promising solution to establish communication over vehicular systems that can overcome the current and future needs for increasing public safety and efficiency. In this paper a heterogeneous hybrid vehicular wireless network consisted of IEEE 802.11b/g/e and IEEE 802.16e is being deployed inside a tunnel environment for surveillance reasons. Furthermore, we analyze the proposed vehicular wireless network architecture and provide the performance evaluation of the hybrid WiFi/WiMAX wireless network implementation during handover process after an emergency situation (fire or explosion). Moreover, we also survey through OMNeT++ simulator tool the performance of the hybrid wireless network over the handover procedure. Finally, we provide a comparison between the experimental and simulated results emphasizing on link quality metrics such as average packet end-to-end delay, SNR and throughput.