Reliability-considered Multi-platoon's Groupcasting using the Resource Sharing Method

TL;DR

This paper introduces RSPG, a resource sharing method for 5G platoon groupcasting that improves spectrum efficiency and QoS by optimizing subchannel allocation based on transmission reliability.

Contribution

It proposes a novel resource sharing algorithm using tripartite matching for reliable subchannel allocation in platoon groupcasting.

Findings

RSPG improves QoS satisfaction rate of individual entities.

It increases spectral efficiency compared to existing methods.

The method reduces the number of subchannels needed for platoons.

Abstract

In the context of 5G platoon communications, the Platoon Leader Vehicle (PLV) employs groupcasting to transmit control messages to Platoon Member Vehicles (PMVs). Due to the restricted transmission power for groupcasting, it may need to pick one PMV as the Platoon Relay Vehicle (PRV) to be responsible for re-groupcasting messages of PLVs. To optimize the usage of limited spectrum resources, resource sharing can adopted to enhance spectrum efficiency within the platoon. This study proposes a resource allocation method, which is called Resource Sharing for Platoon Groupcasting (RSPG), for platoon groupcasting based on transmission reliability. RSPG utilizes tripartite matching to assign a subchannel to either a PLV or PRV that shares the assigned subchannel with the corresponding individual entity (IE), which does not belong to any platoon. The simulation results show that the proposed method performs better in terms of the QoS satisfaction rate of IEs, the number of allocated subchannels for platoons, and spectral efficiency.