Flying ad-hoc networks (FANETs) have many applications in military, industrial and agricultural areas. Due to specific features of FANETs, such as high-speed nodes, low density of nodes in the network, and rapid changes in the topology, most routing protocols designed for mobile ad hoc networks (MANETs) or vehicular ad hoc networks (VANETs) are not compatible with FANETs. In this paper, we propose a fuzzy logic-based routing approach called OLSR+ for FANETs. In this scheme, we seek to improve the optimized link state routing protocol (OLSR) so that it can efficiently be used in FANETs. OLSR+ includes four main phases: 1) Discovering neighboring nodes. In this phase, we propose a new and efficient technique for estimating the lifetime of the link between two unmanned ariel vehicles (UAVs) based on the link quality, distance, relative velocity, and movement direction. 2) Selecting multipoint relays (MPRs). In this phase, we present a fuzzy mechanism for selecting a set of MPR nodes. According to this mechanism, when a node has higher residual energy, higher link lifetime, and more neighborhood degree compared to others, it achieves more fitness to be selected as MPR. 3) Discovering the network topology. In this phase, we modify the format of the topology control (TC) message and add two fields, including route energy and route lifetime to this message. 4) Calculating the routing table. In OLSR+, we consider two parameters, including route energy and route lifetime, for establishing stable paths. Finally, we simulate OLSR+ using NS3 and compare its performance with two methods, namely greedy optimized link state routing (G-OLSR) and optimized link state routing (OLSR). The simulation results show that OLSR+ successfully reduces delay compared to G-OLSR and OLSR. In addition, it has higher packet delivery rate and throughput than others. Also, it improves energy consumption in the network. However, OLSR+ has more routing overhead than G-OLSR.

飞行自组织网络 (FANET) 在军事、工业和农业领域有许多应用。由于 FANET 的特定特性，例如高速节点、网络中节点的低密度以及拓扑结构的快速变化，大多数为移动自组织网络 (MANET) 或车载自组织网络 (VANET) 设计的路由协议都是与 FANET 不兼容。在本文中，我们提出了一种基于模糊逻辑的路由方法，称为 OLSR+，用于 FANET。在该方案中，我们寻求改进优化的链路状态路由协议（OLSR），使其能够有效地用于 FANET。OLSR+ 包括四个主要阶段： 1) 发现相邻节点。在这一阶段，我们提出了一种新的高效技术，用于根据链路质量、距离、相对速度、和运动方向。2) 选择多点继电器 (MPR)。在这个阶段，我们提出了一种选择一组 MPR 节点的模糊机制。根据这种机制，当一个节点与其他节点相比具有更高的剩余能量、更高的链路寿命和更高的邻域度时，它获得了更多的适合度被选为 MPR。3) 发现网络拓扑。在这个阶段，我们修改了拓扑控制（TC）消息的格式，并在这个消息中添加了两个字段，包括路由能量和路由生命周期。4) 计算路由表。在 OLSR+ 中，我们考虑了两个参数，包括路由能量和路由寿命，用于建立稳定的路径。最后，我们使用 NS3 模拟 OLSR+，并将其性能与两种方法进行比较，即贪婪优化链路状态路由 (G-OLSR) 和优化链路状态路由 (OLSR)。仿真结果表明，与 G-OLSR 和 OLSR 相比，OLSR+ 成功地减少了延迟。此外，它具有比其他更高的数据包传递率和吞吐量。此外，它还改善了网络中的能源消耗。但是，OLSR+ 比 G-OLSR 有更多的路由开销。