CF-MAC: A collision-free MAC protocol for UAVs Ad-Hoc networks

UAVs Ad-Hoc Networks has earned more and more attentions recently. How to design a collision-free MAC protocol which allows UAVs to access the networks rapidly and reliably is a crucial challenge. Many MAC protocols proposed for VANETs or UAVs Ad-Hoc Networks have some limitations, i.e., some ones need full duplex technique which is not very practical now. This paper propose a collision-free MAC protocol CF-MAC which allows the UAVs with half-duplex radio and omnidirectional antenas to rapidly access the networks and utilizes a region marking scheme to reduce the collision probability to near zero. Compare with VeMAC which is an outstanding MAC protocol for VANETs, simulations show that CF-MAC can get a 20% improvement in efficiency of channel access, and more importantly it reduce the collision probability to near zero.

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