Semantic and Task-Oriented V2X Communications: Pushing the Limits of V2X Networks Scalability
2026-06-08 • Networking and Internet Architecture
Networking and Internet Architecture
AI summaryⓘ
The authors looked at how connected cars communicate with each other and found that current methods send a lot of unnecessary information, which can cause problems when many vehicles are connected. They tested a smarter way of communication that focuses only on important messages that the receivers need. Their results showed this approach lets more cars communicate at the same time, delivers messages faster, and makes sure important info gets through more reliably. This could help make large-scale connected vehicle networks work better.
Vehicle-to-Everything (V2X)ScalabilitySemantic CommunicationTask-oriented CommunicationConnected VehiclesMessage RelevanceHigh-density NetworksCommunication ResourcesInter-reception TimeInformation Delivery
Authors
Luca Lusvarghi, Javier Gozalvez, Mohammad Irfan Khan, Seyhan Ucar, Miguel Sepulcre, Onur Altintas
Abstract
Scalable Vehicle-to-Everything (V2X) networks are key to support the large-scale deployment of connected and automated mobility. However, the scalability of V2X networks is currently challenged by the limitations of existing V2X communication paradigms, which prioritize the reliable and timely delivery of the transmitted information over a careful message content selection - an approach that can potentially lead to the transmission of unnecessary information and an inefficient usage of communication resources. Semantic and task-oriented V2X communications have recently been proposed to address these scalability challenges by focusing on the content of the transmitted messages, particularly on its relevance to the intended receivers. In this paper, we numerically demonstrate that semantic and task-oriented V2X communications can substantially improve the scalability of V2X networks, increasing by up to a 4.1x factor the number of supported vehicles under high-density conditions. In addition, we show that semantic and task-oriented V2X communications can also decrease the inter-reception time between consecutive messages by up to 67% and lead to a twofold increase in the probability of successfully delivering all required relevant information to the intended receivers.