Dense Deployment of LoRa Networks: Expectations and Limits of Channel Activity Detection and Capture Effect for Radio Channel Access

Autor:	Congduc Pham, Muhammad Ehsan
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	LPWAN LoRa scalability performance channel access carrier sense Chemical technology TP1-1185
Zdroj:	Sensors, Vol 21, Iss 3, p 825 (2021)
Druh dokumentu:	article
ISSN:	1424-8220
DOI:	10.3390/s21030825
Popis:	With worldwide deployment of LoRa/LoRaWAN LPWAN networks in a large variety of applications, it is crucial to improve the robustness of LoRa channel access which is largely ALOHA-like to support environments with higher node density. This article presents extensive experiments on LoRa Channel Activity Detection and Capture Effect property in order to better understand how a competition-based channel access mechanisms can be optimized for LoRa LPWAN radio technology. In the light of these experimentation results, the contribution continues by identifying design guidelines for a channel access mechanism in LoRa and by proposing a channel access method with a lightweight collision avoidance mechanism that can operate without a reliable Clear Channel Assessment procedure. The proposed channel access mechanism has been implemented and preliminary tests show promising capabilities in increasing the Packet Delivery Rate in dense configurations.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/492b89de74bf41b09aabba3a93daf9a3 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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