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SUMMARY:Invitación a charla "Rethinking Downlink Communication in LoRaWAN
 : Addressing Limitations and Exploring Opportunities" Viernes 6 de Noviemb
 re
DTSTART;VALUE=DATE-TIME:20261103T170000Z
DTEND;VALUE=DATE-TIME:20261103T190000Z
DTSTAMP;VALUE=DATE-TIME:20261108T161947Z
UID:indico-event-355@indico.ing.puc.cl
DESCRIPTION:Te invitamos a la charla presencial impartida por el Dr. Carlo
 s Fernández Hernández\, exalumno USM e Investigador Postdoctoral en Inri
 a Lyon / INSA Lyon (Francia).\n\n🗓 ¿Cuándo? Viernes 6 de noviembre | 
 12:20 a 13:30 hrs.\n\n📍 ¿Dónde? Sala de clases del DIE.\n\n🍕 ¿Bon
 us? Colación incluida para asistentes inscritos.\n\n🔗 Inscríbete aqu
 í para asegurar tu colación:\n\nhttps://indico.ing.puc.cl/event/355/regi
 strations/309/\n\nResumen\n\nLoRaWAN is a widely adopted technology for lo
 w-power\, long-range Internet of Things (IoT) applications. Despite its bi
 directional design\, communication in LoRaWAN networks is predominantly up
 link-oriented\, while downlink transmissions remain constrained by gateway
  limitations\, duty-cycle regulations\, and half-duplex operation. These c
 onstraints make downlink communication a significant bottleneck\, despite 
 its importance for device activation\, acknowledgements\, and actuator con
 trol.\n\nWhile existing research has extensively addressed uplink communic
 ation and gateway-level constraints\, less attention has been devoted to t
 he role of the network server in downlink management. The network server m
 akes critical decisions\, including gateway selection and transmission tim
 ing\, that directly influence downlink performance. This work shifts the f
 ocus to the network server by evaluating the downlink scheduling mechanism
 s of two widely used open-source LoRaWAN network servers\, ChirpStack and 
 The Things Stack (TTS)\, both qualitatively and quantitatively. By compari
 ng their performance against an optimal scheduling model\, the evaluation 
 reveals significant room for improvement. Building on these findings\, fou
 r complementary scheduling approaches are investigated\, leveraging priori
 tization criteria\, weighted decision mechanisms\, traffic prediction\, an
 d duty-cycle management. These approaches aim to improve downlink performa
 nce while maintaining compatibility with the LoRaWAN standard and limiting
  computational complexity.\n\nThe findings highlight the importance of net
 work-server decisions in improving downlink capacity and network performan
 ce. They also motivate further research into adaptive scheduling\, resourc
 e allocation\, and emerging deployment scenarios\, including Direct-to-Sat
 ellite IoT\, where different communication constraints introduce new chall
 enges for downlink management.\n\nBiografía del Expositor\n\nCarlos Fern
 ández Hernández is a postdoctoral researcher at the CITI Lab\, jointly a
 ffiliated with Inria Lyon and INSA Lyon\, France. He holds a degree in Ele
 ctronic Civil Engineering from Universidad Técnica Federico Santa María\
 , Chile\, and a Ph.D. in Computer Science from INSA Lyon. His research foc
 uses on low-power wide-area networks (LPWANs)\, particularly LoRaWAN\, dow
 nlink communication\, and direct-to-satellite IoT communications.\n\n¡Los
  esperamos!\n\n--\n\nMiguel Gutiérrez Gaitán\n\nAssistant Professor\n\nE
 lectrical Engineering Department\n\nUC Chile\n\n \n\nhttps://indico.ing.p
 uc.cl/event/355/
LOCATION:
URL:https://indico.ing.puc.cl/event/355/
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