Title :
On the TDD subframe structure for beyond 4G radio access network
Author :
Lahetkangas, Eeva ; Pajukoski, Kari ; Tiirola, Esa ; Berardinelli, Gilberto ; Harjula, Ilkka ; Vihriala, Jaakko
Author_Institution :
Nokia Siemens Networks, Oulu, Finland
Abstract :
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.
Keywords :
4G mobile communication; OFDM modulation; automatic repeat request; local area networks; optimisation; radio access networks; radio links; switching networks; telecommunication traffic; B4G radio access network; HARQ RTT; LA; LTE-Advanced technology; OFDM; TDD; WiMAX technology; beyond 4G radio access network; hybrid ARQ round trip time; link direction switching; local area mobile data traffic; optimization; orthogonal frequency division multiplexing; physical layer control signaling latency; time division duplex physical subframe structure; Bandwidth; Data communication; Mobile communication; OFDM; Switches; Timing; WiMAX; Beyond 4G; OFDM; TDD; cyclic prefix; guard period; subframe;
Conference_Titel :
Future Network and Mobile Summit (FutureNetworkSummit), 2013
Conference_Location :
Lisboa
