Location-partition-based channel allocation and power control methods for C-V2X communication networks

Abstract

This paper studies the resource allocation (RA) problem in a vehicle-to-vehicle (V2V) communication network when the in-band device-to-device technology is applied to support cellular-based vehicle-to-everything communication. Due to the rapid mobility of vehicles, it is difficult to track real-time channel state information so that effective RA is challenging. We consider a scenario where multiple V2V links on a road can be divided into groups to reuse cellular users’ channels. A location-partition-based channel allocation (CA) scheme is first proposed by transforming the CA problem into a simple data-matching problem. Further, a best-effort rate-equal power control scheme is studied to maximize the minimum achievable rate among the V2V links in one group. Two other schemes are proposed to improve the communication latency in high-density environments. Simulation results show that the performance of the proposed RA approaches is better than conventional solutions.