Coordinated Direct and Relay Schemes for Two-Hop Communication in VANETS

TL;DR

This paper explores coordinated direct and relay communication schemes in VANETs, combining network coding, interference cancellation, and multi-way schemes to optimize two-hop communication between static and vehicular nodes.

Contribution

It introduces novel coordinated schemes for two-hop V2I communication, optimizing transmission arrangements using interference management and network coding techniques.

Findings

Enhanced communication efficiency with coordinated schemes.

Improved network throughput and reliability.

Effective interference cancellation methods demonstrated.

Abstract

In order to accommodate increasing need and offer communication with high performance, both vehicle-to-infrastructure (V2I) and vehicle-to-vehicle (V2V) communications are exploited. The advantages of static nodes and vehicular nodes are combined to achieve an optimal routing scheme. In this paper, we consider the communications between a static node and the vehicular nodes moving in an adjacent area of it. The adjacent area is defined as the zone where a vehicular can communicate with the static node within maximum two hops. We only consider single-hop and two-hop transmissions because these transmissions can be considered as building blocks to construct transmissions with a higher number of hops. Different cases in which an uplink or a downlink for the two-hop user combined with an uplink or a downlink for the single-hop user correspond to different CDR schemes. Using side information to intentionally cancel the interference, Network Coding (NC), CDR, overhearing and multi-way schemes aggregate communications flows in order to increase the performance of the network. We apply the mentioned schemes to a V2I network and propose novel schemes to optimally arrange and combine the transmissions.