CoMP-Based Seamless Handover and Resource Allocation for 5G-V2X Platoon Systems

In this paper, the handover problem is investigated for a cellular vehicle-to-everything (C-V2X) based vehicle platoon. We propose a cooperative multipoint transmission (CoMP)-based seamless handover between roadside units (RSUs) and resource allocation (C-SHRA) algorithm, where a CoMP-based seamless handover is proposed to avoid ping-pong handover for RSU-to-platoon (R2P) link, and a cooperative spectrum-sharing based resource allocation scheme is designed to mitigate both intra-platoon and inter-RSU interferences for intra-platoon vehicle-to-vehicle (V2V) links. A joint block length and transmission power optimization (JBLTPO) algorithm is proposed to maximize the effective throughput of the R2P link in the CoMP mode. Numerical results show that the proposed C-SHRA algorithm is verified for effective communication performance enhancement, and the proposed JBLTPO algorithm achieves the optimal performance in terms of effective throughput with a significant complexity reduction over exhaustive search.