Media Access Process Modeling of LTE-V-Direct Communication Based on Markov Chain

As one of the most promising communication technologies in vehicular networks, LTE V2X related technical specifications are released in Release 14 by 3GPP in 2017. In the newest specifications, the LTE V2X can work with or without eNBs, namely LTE-V-Cell and LTE-V-Direct. In this study, we focus on the media access process of LTE-V-Direct. First, we proposed a model to describe the MAC process of LTE-V-Direct, and based on that model, we derived the Frame Information Loss Rate and Inter-Reception Gap of LTE-V-Direct. Then, we designed a simulation to verify the model. By comparing the simulation result and numerical result of the model, the correctness and precision of the model is verified.