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C-RAN Enabled Seamless Mobility Mechanism in Autonomous Driving

Connected autonomous driving has already been a new paradigm of driving for safety, efficiency and mobility. Connected autonomous driving can overcome the perceptual limitations of single vehicle, which has a high demand for high speed and seamless network connection. With the superiority of C-RAN, autonomous driving network can effectively support a vast number of vehicles communications and flexible multi-RRH cooperative transmission to improve throughput. However, due to the high mobility of vehicle, the problem of long latency or even link break caused by frequent hard handover still exists. In this context, based on cooperative transmission and the idea of multiple connections, we studied seamless mobility mechanism in C-RAN enabled autonomous driving. In this paper, we propose a user-centric dynamic cooperative cluster updating scheme with the purpose of guaranteeing the seamless of the vehicle during handover process due to mobility. Simulation results demonstrate that the proposed scheme can effectively solve the interruption latency or link interruption problem caused by handover. And compared with the non-cooperative case, the proposed scheme is superior in throughput gain.