Performance of AODV and OLSR routing protocol in a hybrid sensor and vehicular network 802.11p

Hybrid sensor and vehicular network (HSVAN) is a new and inexpensive technology that combines the features of wireless sensor network (WSN) with vehicular ad hoc network and (VANET). In HSVAN, sensor nodes' distribution is prearranged and deployed along with the roadsides and have centralized communication channel with sensor gateway that alert drivers from dangerous conditions. However, the network dynamic imposes new challenges that should be addressed regarding appropriate routing protocols that should be implemented to disseminate the data among the nodes. In this paper, the performance of AODV and OLSR routing protocols in HSVAN adopting IEEE 802.11b and IEEE 802.11p MAC standards was investigated. The simulation scenario represents a rural environment with six nodes and one WSN gateway using the NS-3 and SUMO simulator. Simulation result shown that IEEE 802.11p achieved 9% throughput gain over IEEE 802.11b as a MAC protocol. Moreover, the AODV routing protocol outperformed OLSR by 3%, 4%, and 55% in term of throughput, packet delivery ratio, and end to end delay respectively. However, the effect of mobility high data request not been considered to imitate the real HSVAN environment.