000149014 001__ 149014 000149014 005__ 20250124153131.0 000149014 0247_ $$2doi$$a10.1109/TWC.2019.2910512 000149014 0248_ $$2sideral$$a112671 000149014 037__ $$aART-2019-112671 000149014 041__ $$aeng 000149014 100__ $$0(orcid)0000-0001-9052-9554$$aOrtín, Jorge 000149014 245__ $$aAugmenting LoRaWAN Performance With Listen Before Talk 000149014 260__ $$c2019 000149014 5060_ $$aAccess copy available to the general public$$fUnrestricted 000149014 5203_ $$aStandard LoRaWANs leverage pure ALOHA at the medium access control layer, which is proved to be a performance bottleneck as the network size scales up. Stimulated by this fact, this paper studies the applicability and the performance of listen before talk (LBT) medium access schemes in the context of LoRaWANs. We consider two different implementations of LBT: physical layer LBT based on energy detection only and MAC layer LBT based on layer 2 frame decoding, and we propose a Markovian framework to evaluate the performance of LoRaWANs under such setting in terms of data extraction rate and average delay experienced by transmitted uplink messages. The proposed framework is also leveraged to assess the performance of "mixed" LoRaWAN scenarios, where some devices access the channel according to the standard-compliant ALOHA protocol, while other devices transmit according to LBT. 000149014 536__ $$9info:eu-repo/grantAgreement/ES/DGA/T31-17R$$9info:eu-repo/grantAgreement/ES/MEC/CAS17-00624$$9info:eu-repo/grantAgreement/ES/UZ/CUD2018-03$$9info:eu-repo/grantAgreement/ES/UZ/UZ2018-TEC-04 000149014 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000149014 590__ $$a6.779$$b2019 000149014 591__ $$aTELECOMMUNICATIONS$$b8 / 89 = 0.09$$c2019$$dQ1$$eT1 000149014 591__ $$aENGINEERING, ELECTRICAL & ELECTRONIC$$b20 / 265 = 0.075$$c2019$$dQ1$$eT1 000149014 592__ $$a2.623$$b2019 000149014 593__ $$aApplied Mathematics$$c2019$$dQ1 000149014 593__ $$aElectrical and Electronic Engineering$$c2019$$dQ1 000149014 593__ $$aComputer Science Applications$$c2019$$dQ1 000149014 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000149014 700__ $$aCesana, Matteo 000149014 700__ $$aRedondi, Alessandro 000149014 773__ $$g18, 6 (2019), 3113-3128$$pIEEE Trans. Wirel. Commun.$$tIEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS$$x1536-1276 000149014 8564_ $$s425621$$uhttps://zaguan.unizar.es/record/149014/files/texto_completo.pdf$$yPostprint 000149014 8564_ $$s3269717$$uhttps://zaguan.unizar.es/record/149014/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000149014 909CO $$ooai:zaguan.unizar.es:149014$$particulos$$pdriver 000149014 951__ $$a2025-01-24-14:49:01 000149014 980__ $$aARTICLE