In low power wide area (LPWA) networks, low-cost end devices (EDs) such as sensors communicate with a central base station (BS) using pure ALOHA protocol. In particular, half-duplex is considered wherein the BS switches from receiving to transmitting mode after receiving a packet successfully from an ED in order to send the acknowledgement. Since the EDs can not know at the moment when the BS turns to the receiving mode, the packets transmitted by the EDs during the receiving mode of the BS are lost. To investigate performance of such half-duplex pure ALOHA systems, this paper develops a semi-Markov (SM) process model for pure ALOHA channel with infinite population. Furthermore, the SM process is approximated with an $M/M/1$ system in order to analyze the system with finite population. As results, this paper presents how the performance of half-duplex system is influenced by switching time, backoff interval of EDs, and stability criteria of the system, which are verified through system simulations.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Half-Duplex ALOHA Systems for Low Power Wide Area Networks


    Contributors:
    Seo, Jun-Bae (author) / De, Swades (author) / Kim, Seung-Yeon (author)


    Publication date :

    2018-06-01


    Size :

    407216 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Variable Packet Aloha networks

    McCartin,J.T. / Ha,T.T. / Naval Postgraduate School,Dep.of Electrical and Computer Engineering,US | Automotive engineering | 1990


    Relay Selection in Power Splitting Based Energy-Harvesting Half-Duplex Relay Networks

    Wang, Dexin / Zhang, Rongqing / Cheng, Xiang et al. | IEEE | 2017


    Atlantis Aloha 2000

    Witney, J. / Marine Technology Society | British Library Conference Proceedings | 1993


    Bulk Transmissions for S-ALOHA Systems

    Hu, Yangqian / Seo, Jun-Bae / Jin, Hu | IEEE | 2022


    Optimising Half Duplex Operation in Satellite Communication Systems

    Clarac, L. / Perez, H.G. / Institution of Engineering and Technology; American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2009