Backoff-Based Opportunistic Routing with Concurrent Transmission

Concurrent transmission (CT) is a promising technology for achieving efficient data transmission based on constructive interference of wireless broadcasts. However, it fails to transmit packets because of the destructive interference. Opportunistic routing (OR) avoids transmission failure by using path diversity based on flexible forwarder selection. However, it fundamentally imposes transmission delay owing to the packet-level forwarder selection. In this paper, we propose backoff-based OR with CT, which efficiently forwards data packets using CT, and then supports them based on OR. Finally, we compared the performance of the proposed method with that of traditional approaches using a simple lattice topology. The simulation results revealed that the proposed method achieved both a high packet transmission success rate and a small transmission delay while suppressing an increase in the network load.