Mobile Ad-hoc Networks (MANETs) play a critical role for wireless communications within mission-critical applications. Wireless communications have the drawback of being susceptible to jamming. Jamming disturbs the normal reception of signals on the physical layer. While MANETs can adapt to continuous jamming, intermittent jamming can seriously disrupt the routing protocol and the traffic flow. In the intermittent case, the network topology during non-jamming is generally quite different from that of one during jamming. Much of the recent work on jamming mitigation has focused on how to adjust the transmitter-receiver system once an adversarial jamming attack has been detected. However, jamming need not be only adversarial in nature. Friendly jammers are supposed to disturb the adversarial networks but not the friendly ones. In this paper, we propose jamming-aware routing and MAC protocols for the friendly jamming scenario, where the jamming schedule is known to the friendly mobile nodes but hidden from all adversarial ones. In one scheme, the routing and MAC protocols freeze during jamming but resume during non-jamming. In another scheme, the routing protocol uses two sub-protocols: one for jamming and another for non-jamming. We have named the friendly-jamming-aware routing protocols as JOLSR, because their implementations have been based on OLSR, and the friendly-jamming-aware MAC protocol as JTDMA, as its implementation has been based on TDMA. We have shown through extensive simulations that these proposed protocols can significantly improve the packet delivery ratio and other metrics compared to off-the-shelf proactive unicast and reactive multicast routing protocols and a schedule based (TDMA) MAC protocol.

移动自组织网络（MANET）在关键任务应用程序内的无线通信中扮演着至关重要的角色。无线通信具有易受干扰的缺点。干扰会干扰物理层上信号的正常接收。虽然MANET可以适应连续干扰，但间歇性干扰会严重破坏路由协议和流量。在间歇情况下，非干扰期间的网络拓扑通常与干扰期间的网络拓扑完全不同。缓解干扰的最新工作大部分集中在一旦检测到对抗性干扰攻击后如何调整发射器-接收器系统。但是，干扰本质上不必只是对抗性的。友善的干扰者应该打扰对抗网络，而不是友善的干扰者。在本文中，我们针对友好的干扰场景提出了干扰感知路由和MAC协议，其中干扰调度对于友好的移动节点是已知的，但对所有对抗节点都是隐藏的。在一种方案中，路由和MAC协议在干扰期间冻结，但在非干扰期间恢复。在另一种方案中，路由协议使用两个子协议：一个用于干扰，另一个用于非干扰。我们将友好干扰感知路由协议命名为JOLSR，因为它们的实现基于OLSR，而友好干扰感知MAC协议称为JTDMA，因为其实现基于TDMA。