Graph-based resource allocation with conflict avoidance for V2V broadcast communications

Luis F. Abanto-Leon, Arie Koppelaar, Sonia Heemstra De Groot

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

4 Citations (Scopus)
167 Downloads (Pure)

Abstract

In this paper we present a graph-based resource allocation scheme for sidelink broadcast vehicle-to-vehicle (V2V) communications. Harnessing information on the geographical position of vehicles and spectrum resources utilization, eNodeBs are capable of allotting the same set of sidelink resources to several different vehicles in order for them to broadcast their signals. Hence, vehicles sharing the same resources would ideally be in different communications clusters for the interference level - generated due to resource repurposing - to be maintained under control. Within a communications cluster, it is crucial that vehicles transmit in orthogonal time resources to prevent conflicts as vehicles - with half-duplex radio interfaces - cannot transmit and receive simultaneously. In this research, we have envisaged a solution based on a bipartite graph, where vehicles and spectrum resources are represented by vertices whereas the edges represent the achievable rate in each resource based on the signal-to-interference-plus-noise ratio (SINR) that vehicles perceive. The aforementioned constraint on time orthogonality of allocated resources can be approached by aggregating conflicting vertices into macro-vertices which, in addition, narrows the search space yielding a solution with computational complexity equivalent to the conventional graph matching problem. We show mathematically and through simulations that the proposed approach yields an optimal solution. In addition, we provide simulations showing that the proposed method outperforms other competing approaches, specially in scenarios with high vehicular density.

Original languageEnglish
Title of host publication2017 IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
Subtitle of host publicationEngaged Citizens and their New Smart Worlds, PIMRC 2017 - Conference Proceedings
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages1-7
Number of pages7
ISBN (Electronic)978-1-5386-3531-5
ISBN (Print)978-1-5386-3529-2
DOIs
Publication statusPublished - 14 Feb 2018
Event28th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2017) - Hotel Bonaventure, Montreal, Canada
Duration: 8 Oct 201713 Oct 2017
Conference number: 28
http://pimrc2017.ieee-pimrc.org/

Conference

Conference28th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2017)
Abbreviated titlePIMRC 2017
Country/TerritoryCanada
CityMontreal
Period8/10/1713/10/17
Internet address

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