Open AccessLR-FHSS Networks With Orthogonal Physical Channels for Headers and Payload Fragments
Author(s) -
Jean Michel de Souza Sant'Ana,
Elco Joao dos Santos,
Joao Luiz Rebelatto,
Konstantin Mikhaylov,
Hirley Alves,
Richard Demo Souza
Publication year - 2025
Publication title -
ieee internet of things journal
Language(s) - English
Resource type - Magazines
SCImago Journal Rank - 2.075
H-Index - 97
eISSN - 2327-4662
DOI - 10.1109/jiot.2025.3573149
Subject(s) - computing and processing , communication, networking and broadcast technologies
This paper introduces an enhancement to the Long-Range Frequency-Hopping Spread Spectrum (LR-FHSS), a modulation within the LoRaWAN specification, particularly useful in dense networks supported by satellite gateways. LR-FHSS replicates headers and payload fragments across different physical channels, but the distinct transmission strategies for headers and payloads can lead to uneven success rates and degrading performance. To address this, we propose a scheme that allocates orthogonal physical channels for headers and payloads. Through analytical and simulation results, considering factors such as payload size and the number of users, we identify the optimal distribution of channels between headers and payloads to maximize success probability. The proposed scheme significantly improves performance, supporting up to 50% more users at the same reliability level as the standard LR-FHSS.