On the TDD subframe structure for beyond 4G radio access network

Eeva Lähetkangas, Kari Pajukoski, Esa Tiirola, Gilberto Berardinelli, Ilkka Harjula, Jaakko Vihriälä

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    26 Citations (Scopus)


    The purpose of a Beyond 4G (B4G) radio access technology, is to cope with the expected exponential increase of mobile data traffic in local area (LA). The requirements related to physical layer control signaling latencies and to hybrid ARQ (HARQ) round trip time (RTT) are in the order of ~1ms. In this paper, we propose a flexible orthogonal frequency division multiplexing (OFDM) based time division duplex (TDD) physical subframe structure optimized for B4G LA environment. We show that the proposed optimizations allow very frequent link direction switching, thus reaching the tight B4G HARQ RTT requirement and significant control signaling latency reductions compared to existing LTE-Advanced and WiMAX technologies.
    Original languageEnglish
    Title of host publication2013 Future Network and Mobile Summit (FuNeMS)
    PublisherIEEE Institute of Electrical and Electronic Engineers
    ISBN (Electronic)978-1-905824-37-3
    Publication statusPublished - 2013
    MoE publication typeA4 Article in a conference publication
    EventFuture Network and Mobile Summit, FuNeMS 2013 - Lisbon, Portugal
    Duration: 3 Jul 20135 Jul 2013


    OtherFuture Network and Mobile Summit, FuNeMS 2013
    Abbreviated titleFuNeMS 2013


    • beyond 4G
    • cyclic prefix
    • guard period
    • OFDM
    • subrame
    • TDD


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