In the Internet-of-Things (IoT), different types of devices can co-exist within a network. For example, there can be cheap but inflexible devices as well as flexible devices in terms of radio frequency (RF) capabilities. Thus, in order to support different types of devices in different ways and improve throughput, we propose a multichannel random access scheme based on power-domain non-orthogonal multiple access (NOMA), where each flexible or dynamic device (DD) can dynamically choose one of multiple channels when it has a packet to send. Since a DD can choose either an under-utilized channel or a channel of high gain depending on channel selection criteria, we also study a selection criterion that can take into account not only the system, but also user preference indicators in order to have a balanced performance.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Channel-Aware Opportunistic NOMA for Random Access in IoT Networks


    Contributors:
    Choi, Jinho (author)


    Publication date :

    2021-04-01


    Size :

    2197821 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    NOMA and IDMA in Random Access Systems - Invited Paper

    Hu, Yang / Xu, Chongbin / Ping, Li | IEEE | 2018


    Improving Random Access with NOMA in mMTC XL-MIMO

    Bruza Alves, Thiago Augusto / Abrao, Taufik | IEEE | 2023


    BLER-based Adaptive Q-learning for Efficient Random Access in NOMA-based mMTC Networks

    Tran, Duc-Dung / Sharma, Shree Krishna / Chatzinotas, Symeon | IEEE | 2021


    MAC Protocol for Opportunistic Spectrum Access in Multi-Channel Cognitive Relay Networks

    Chu, Thi My Chinh / Zepernick, Hans-Juergen / Phan, Hoc | IEEE | 2017