Work

Understanding Long Range-Frequency Hopping Spread Spectrum (LR-FHSS) with Real-World Packet Traces

Year: 2024

Type: article

Abstract: Long Range-Frequency Hopping Spread Spectrum (LR-FHSS) is a new physical layer option that has been recently added to the LoRa family with the promise of achieving much higher network capacity than the previous versions of LoRa. In this article, we present our evaluation of LR-FHSS based on real-world packet traces collected with an LR-FHSS device and a receiver we designed and implemented in software. We overcame challenges due to the lack of documentation of LR-FHSS, and our study is the first of its kind that processes signals transmitted by an actual LR-FHSS device with practical issues such as frequency error. Our results show that LR-FHSS meets its expectations in communication range and network capacity. We also propose customized methods for LR-FHSS that improve its performance significantly, allowing our receiver to achieve higher network capacity than those reported earlier.

Source: ACM Transactions on Sensor Networks

DOI: 10.1145/3694971

Authors: Jumana Bukhari, Zhenghao Zhang

Institutions: Florida State University, Imam Abdulrahman Bin Faisal University

Language: English

Topic: IoT Networks and Protocols

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Funder: National Science Foundation

Award: CNS Core: Small: Supporting Massive Wireless Connections in the Internet-of-Things (IoT) with Multiple Zadoff-Chu (MZC) sequences