Abstract
Multipath routing has been proved to improve the reliability and throughput of data transmission in ad-hoc networks. However, in FANETs, due to frequent link failures and rapid changes in network topology, it is difficult to dynamically build these paths and the maintenance overhead is also unacceptable. Given that network encoding can take advantage of the broadcast nature of the wireless channel to improve the transmission performance of multipath routing, we proposed a multipath routing scheme NC-OLSR for FANETS based on the OLSR (Optimized Link State Routing) protocol. NC-OLSR adopts OLSR to create a hybrid multipath selection model based on neighbor nodes' link quality. Moreover, a network coding based data transmission scheme is designed for each end-to-end data transmission task. Thus, NC-OLSR reduces the local constraints which cannot be avoided in the single OLSR or multipath routing scheme. Experimental results show that NC-OLSR can significantly improve the data delivery ratio and improve the transmission efficiency.
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