{"title":"Hidden Node Probability in LoRa With Listen-Before-Talk","authors":"Zhenyu Cao;Hu Jin;Jun-Bae Seo","doi":"10.1109/LWC.2024.3453788","DOIUrl":null,"url":null,"abstract":"LoRa networks use listen-before-talk (LBT) in unslotted ALOHA to accommodate numerous sensors, often across areas exceeding 10 km. Due to potential hidden nodes, devices may incorrectly detect idle channels. This letter investigates the effectiveness of LBT in LoRa, focusing on the hidden node probability (HNP) across different annuli with distinct spreading factors, considering Nakagami-m fading and path loss. We analyze the impact of HNP on the MAC layer performance of unslotted ALOHA, demonstrating LBT’s reliability and efficiency in large-scale sensor deployments.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"13 10","pages":"2917-2921"},"PeriodicalIF":5.5000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Wireless Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10663910/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
LoRa networks use listen-before-talk (LBT) in unslotted ALOHA to accommodate numerous sensors, often across areas exceeding 10 km. Due to potential hidden nodes, devices may incorrectly detect idle channels. This letter investigates the effectiveness of LBT in LoRa, focusing on the hidden node probability (HNP) across different annuli with distinct spreading factors, considering Nakagami-m fading and path loss. We analyze the impact of HNP on the MAC layer performance of unslotted ALOHA, demonstrating LBT’s reliability and efficiency in large-scale sensor deployments.
期刊介绍：
IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. 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 wireless communication systems.
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