@conference{Triantafyllou2020,

title = {A Novel LoRaWAN Scheduling Scheme for Improving Reliability and Collision Avoidance},

author = { A. Triantafyllou and P. Sarigiannidis and T. Lagkas and A. Sarigiannidis},

url = {https://www.researchgate.net/publication/345185837_A_Novel_LoRaWAN_Scheduling_Scheme_for_Improving_Reliability_and_Collision_Avoidance},

doi = {10.1109/MOCAST49295.2020.9200253},

year  = {2020},

date = {2020-01-01},

journal = {2020 9th International Conference on Modern Circuits and Systems Technologies, MOCAST 2020},

abstract = {The employment of Low-Power Wide Area Networks (LPWANs) has proven quite beneficial to the advancement of the Internet of Things (IoT) paradigm. The utilization of low power but long range communication links of the LoRaWAN technology promises low energy consumption, while ensuring sufficient throughput. However, due to LoRa's original scheduling process there is a high chance of packet collisions, compromising the technology's reliability. In this paper, we propose a new Medium Access Control (MAC) protocol, entitled the RCA-LoRa towards improving reliability and collision avoidance in LoRa wide-area networks. The novel scheduling process that is introduced is based on the broadcasting of beacon frames by the network's gateway in order to synchronize communication with end devices. Our results demonstrate the benefits of RCA-LoRa over an enhanced version of the legacy LoRaWAN employing the ALOHA protocol and an advanced adaptive rate mechanism, in terms of throughput and collision avoidance. Indicatively, in a single cell scenario with 600 nodes, RCA-LoRa can increase throughput by nearly 50 © 2020 IEEE.},

keywords = {Collision avoidance, Internet of things, Low-Power Wide Area Networks, Medium Access Control},

pubstate = {published},

tppubtype = {conference}

}

@conference{Yiannopoulos2013335,

title = {PANDA: Asymmetric passive optical network for xDSL and FTTH access},

author = { K. Yiannopoulos and E. Varvarigos and D. Klonidis and I. Tomkos and M. Spyropoulou and I. Lazarou and P. Bakopoulos and H. Avramopoulos and G. Heliotis and L.-P. Dimos and G. Agapiou and Th. Oikonomou and D. Kritharidis and Sp. Spyridakis and M. Dalakidis and G. Synnefakis and D. Reisis and G. Papastergiou and I. Koukouvinos and A. Orfanoudakis and G.I. Papadimitriou and P. Sarigiannidis and C. Liaskos},

url = {https://www.researchgate.net/publication/258963505_PANDA_asymmetric_passive_optical_network_for_xDSL_and_FTTH_access},

doi = {10.1145/2491845.2491885},

year  = {2013},

date = {2013-01-01},

journal = {ACM International Conference Proceeding Series},

pages = {335-342},

abstract = {In this paper, we present an "Asymmetric Passive Optical Network for xDSL and FTTH Access" (PANDA) architecture that is suitable for providing end-users with broadband connections in a cost-effective and non-disruptive fashion. We first describe the need for expanding the current ADSL access to VDSL (and ultimately FTTH), as well as the network upgrades that will be required to perform this expansion. We then introduce the PANDA architecture, a multiwavelength passive optical network (PON) that implements a fiber-to-the cabinet (FTTC) access scheme and provides multi-ten Mb/s access to VDSL2 end-users. We also derive the PANDA capacity in terms of number of users and spatial coverage and show that PANDA is well capable of meeting the broadband needs in the Greece for the short and medium term. We conclude this work with a scalability study of PANDA in view of the goals set in the EU Digital Agenda. Copyright © 2013 ACM.},

keywords = {Broadband access, Digital subscriber loop, Medium Access Control, Network scalability, Passive optical networks},

pubstate = {published},

tppubtype = {conference}

}