{"title":"Adaptive DENM Retransmission for Enhancing Reliability of Mixed V2X Traffic","authors":"Seung-Jae Yu;Cheol Mun","doi":"10.1109/LCOMM.2025.3572938","DOIUrl":null,"url":null,"abstract":"Decentralized Environmental Notification Message (DENM) retransmission schemes have been suggested to increase the Packet Delivery Ratio (PDR) for DENMs, they compromise communication performance due to resource collisions with Cooperative Awareness Messages (CAM) in mixed-traffic environments. To address this issue, this letter proposes the Adaptive DENM Retransmission (ADR) scheme, which adaptively adjusts DENM retransmission resources based on the Channel Busy Ratio (CBR) estimated by the transmitting user equipment. Simulation results show that the ADR scheme improves PDR for both CAMs and DENMs, with greater improvements in congested wireless channels.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"29 7","pages":"1724-1728"},"PeriodicalIF":3.7000,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/11014232/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
Decentralized Environmental Notification Message (DENM) retransmission schemes have been suggested to increase the Packet Delivery Ratio (PDR) for DENMs, they compromise communication performance due to resource collisions with Cooperative Awareness Messages (CAM) in mixed-traffic environments. To address this issue, this letter proposes the Adaptive DENM Retransmission (ADR) scheme, which adaptively adjusts DENM retransmission resources based on the Channel Busy Ratio (CBR) estimated by the transmitting user equipment. Simulation results show that the ADR scheme improves PDR for both CAMs and DENMs, with greater improvements in congested wireless channels.
期刊介绍:
The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.